Patent Publication Number: US-2021189629-A1

Title: Laundry treating apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of Korean Patent Application No. 10-2019-0174253, filed on Dec. 24, 2019, which is hereby incorporated by reference as if fully set forth herein. 
     TECHNICAL FIELD 
     The present disclosure relates to a laundry treating apparatus, more particularly to, a laundry treating apparatus having a detergent feeder. 
     BACKGROUND 
     A laundry treating apparatus is an apparatus that puts clothes, bedding, and the like (hereinafter, referred to as laundry) into a drum to remove contamination from the laundry. The laundry treating apparatus may perform processes such as washing, rinsing, dehydration, drying, and the like. The laundry treating apparatuses may be classified into a top loading type laundry treating apparatus and a front loading type laundry treating apparatus based on a scheme of putting the laundry into the drum. 
     The laundry treating apparatus may include a cabinet forming an appearance of the laundry treating apparatus, a tub accommodated in the cabinet, a drum that is rotatably mounted inside the tub and into which the laundry is put, and a detergent feeder that feeds detergent into the drum. 
     When the drum is rotated by a motor while wash water is supplied to the laundry accommodated in the drum, dirt on the laundry may be removed by friction with the drum and the wash water. 
     The detergent feeder has a detergent feeding function to improve a washing effect. Herein, the detergent means a substance, such as fabric detergent, fabric softener, fabric bleach, and the like, that enhances the washing effect. Detergent in a powder form and detergent in a liquid form may be used as the detergent. 
     Related literature KR 10-2018-0090003 A1 discloses a detergent feeder included in a laundry treating apparatus. In the laundry treating apparatus, the detergent feeder has a detergent reservoir and an auxiliary detergent container that may contain auxiliary detergent therein. 
     The detergent reservoir needs to be easily separated from a casing by a user as needed. Furthermore, it becomes an important task to ensure that the auxiliary detergent is stably contained in the auxiliary detergent container even when the detergent feeder is moving. 
     SUMMARY 
     The embodiments of the present disclosure intend to provide a laundry treating apparatus that may effectively improve a usability of storage in which detergent is stored. 
     In one example, the embodiments of the present disclosure intend to provide a laundry treating apparatus that may effectively improve a usage efficiency of a detergent feeder. 
     In one example, the embodiments of the present disclosure intend to provide a laundry treating apparatus in which a cap member of a detergent reservoir of storage may be conveniently handled. 
     In one example, the embodiments of the present disclosure intend to provide a laundry treating apparatus that may effectively prevent unintentional leakage of detergent. 
     An embodiment of the present disclosure may form a gripping portion on an edge in order to improve ease of use for separation of the cap member of a detergent reservoir and the like. 
     As the gripping portion of a flange portion of a cap member is additionally formed to be long, a phenomenon in which auxiliary detergent having a powder form or the like overflows to a front face while water of high water pressure is supplied. 
     That is, the auxiliary detergent in the powder form or the like stored in an auxiliary detergent container may be blocked by the gripping portion, which corresponds to a user&#39;s handle, and not overflow. 
     In addition, an embodiment of the present disclosure may determine a set extension distance of storage to improve the ease of use, and may include an engaging portion based on the corresponding set extension distance. As an additional rib is disposed to prevent a holder of the engaging portion from being caught on a stopper, it is possible to effectively prevent an elastic bar including the engaging portion from interfering with the stopper. 
     Particular implementations of the present disclosure provide a laundry treating apparatus that includes a cabinet, a tub, a drum, and a detergent storage. The cabinet defines a detergent opening. The tub is received in the cabinet. The drum is configured to rotate in the tub. The detergent storage is configured to receive a detergent. The detergent storage unit is configured to be inserted into the cabinet through the detergent opening. The detergent storage may include a storage frame, a detergent reservoir, and an auxiliary detergent container. The storage frame is configured to be inserted into the cabinet through the detergent opening. The detergent reservoir is disposed in the storage frame and configured to receive the detergent. The auxiliary detergent container is disposed in the storage frame and defining a container open top. The detergent reservoir may define a reservoir open top and include a cap that is detachably coupled to the detergent reservoir and configured to selectively open and close the reservoir open top. The cap may include a gripping portion extending toward the auxiliary detergent container and at least partially positioned at the container open top of the auxiliary detergent container. 
     In some implementations, the apparatus can optionally include one or more of the following features. The detergent opening may be defined at a front face of the cabinet. The detergent storage may be configured to be moved into the detergent opening of the cabinet along a direction that extends between the front face of the cabinet and a rear face of the cabinet opposite to the front face of the cabinet. The gripping portion of the cap may be positioned at a front portion of the auxiliary detergent container that is closer to the front face of the cabinet than the rear face of the cabinet. The auxiliary detergent container may include a front wall and a side wall and define a detergent storing space that is at least partially surrounded by the front wall and the side wall and exposed by the container open top of the auxiliary detergent container. The detergent reservoir may at least partially surround the front portion and a side portion of the auxiliary detergent container. The cap may include a flange portion protruding toward the container open top of the auxiliary detergent container. The flange portion of the cap may extend along the front wall and the side wall of the auxiliary detergent container. The gripping portion of the cap may be disposed at the front portion of the auxiliary detergent container that is positioned at the front wall of the auxiliary detergent container. The gripping portion of the cap may include a protrusion protruding downward from the flange portion of the cap. The detergent reservoir may include a detergent injection portion, a detergent discharge portion, and a connection portion. The detergent injection portion may be positioned at a front side of the detergent reservoir and define a detergent injection hole. The front side of the detergent reservoir may be positioned closer to the front face of the cabinet than to the rear face of the cabinet. The detergent discharge portion may be positioned at a rear side of the detergent reservoir and configured to discharge the detergent. The rear side of the detergent reservoir may be positioned closer to the rear face of the cabinet than to the front face of the cabinet. The connection portion may connect the detergent injection portion with the detergent discharge portion. The front wall of the auxiliary detergent container may face at least a portion of the detergent injection portion. The side wall of the auxiliary detergent may face at least a portion of the connection portion. The detergent injection portion of the detergent reservoir may include a lateral protruding portion that protrudes laterally farther than the connection portion of the detergent reservoir. The front wall of the auxiliary detergent container may be positioned closer to the rear face of the cabinet than the lateral protruding portion of the detergent injection portion is. The gripping portion of the cap may extend from the lateral protruding portion of the detergent injection portion toward the rear face of the cabinet. The detergent reservoir may be provided in a pair that includes first and second detergent reservoir. The first and second detergent reservoirs may be arranged laterally to each other. The auxiliary detergent container may be positioned between respective connection portions of the first and second detergent reservoirs. Respective lateral protruding portions of the first and second detergent reservoirs may be positioned closer to the front face of the cabinet than the auxiliary detergent container is. A front portion of the flange portion may extend toward the auxiliary detergent container and be longer than a side portion of the flange portion that is positioned at the side wall of the auxiliary detergent container. The cap may include a ventilation hole defined at the detergent injection portion of the detergent reservoir and be configured to allow fluid communication between an interior of the detergent reservoir and an exterior of the detergent reservoir. A sensor terminal and a detergent valve may be arranged at a reservoir rear face of the detergent reservoir that is positioned closer to the rear face of the cabinet than a reservoir front face of the detergent reservoir is. The reservoir front face may be opposite to the reservoir rear face of the detergent reservoir. The sensor terminal and the detergent valve may protrude from the detergent reservoir toward the rear face of the cabinet. The storage frame may define one or more openings corresponding to the sensor terminal and the detergent valve, and include a holding portion extending between the sensor terminal and the detergent valve. The laundry treating apparatus may include a dispenser disposed inside the cabinet and configured to be positioned on the detergent storage, a stopper disposed at the dispenser and protruding toward the detergent storage, and a locking portion disposed at the detergent storage and protruding toward the dispenser. The stopper of the dispenser may be configured to be spaced apart from the locking portion of the detergent storage based on the detergent storage being received into the detergent opening. The locking portion of the detergent storage may be configured to, based on the detergent storage being drawn out from the detergent opening, contact the stopper of the dispenser to thereby restrict a distance of the detergent storage being drawn out from the detergent opening. The laundry treating apparatus may include an elastic bar having a fixed end connected to the detergent storage and a free end. The locking portion may be disposed between the fixed end and the free end. The free end of the elastic bar may be disposed outward of the detergent opening based on the locking portion contacting the stopper to thereby restrict the detergent storage from being drawn out from the detergent opening. The laundry treating apparatus may include a guide protrusion extending from the stopper and having a smaller width than the stopper. The locking portion may have a groove that faces the guide protrusion. The guide protrusion may be configured to be inserted into the groove based on the locking portion contacting the stopper. A surface of the guide protrusion that faces the detergent storage may be inclined such that a distance between the surface of the guide protrusion and the detergent storage increases in a direction away from the stopper. The detergent reservoir may include a case that defines the reservoir open top and is configured to store the detergent. The cap may be detachably coupled to the case and configured to selectively open and close the reservoir open top of the case. The detergent injection portion of the detergent reservoir may include a lateral protruding portion that protrudes laterally farther than the connection portion of the detergent reservoir. The front wall of the auxiliary detergent container may be positioned rearward of the lateral protruding portion of the detergent injection portion. The gripping portion of the cap may extend rearward from the lateral protruding portion of the detergent injection portion. The detergent reservoir may be provided in a pair that includes first and second detergent reservoir. The first and second detergent reservoirs may be arranged laterally to each other. The auxiliary detergent container may be positioned between respective connection portions of the first and second detergent reservoirs. Respective lateral protruding portions of the first and second detergent reservoirs may be positioned in front of the auxiliary detergent container. A sensor terminal and a detergent valve may be arranged at a reservoir rear face of the detergent reservoir that positioned closer to the rear face of the cabinet than a reservoir front face of the detergent reservoir is. The reservoir front face may be opposite to the reservoir rear face of the detergent reservoir. The sensor terminal and the detergent valve may protrude rearward from the detergent reservoir. The detergent storage frame may define one or more openings corresponding to the sensor terminal and the detergent valve, and include a holding portion extending between the sensor terminal and the detergent valve. The stopper of the dispenser may be configured to be spaced apart forwardly from the locking portion of the detergent storage based on the detergent storage being received into the detergent opening. 
     One aspect of the present disclosure proposes a laundry treating apparatus including a cabinet having a detergent opening defined therein, a tub installed inside the cabinet, a drum rotatably installed inside the tub, and storage for storing detergent therein, wherein the storage is retracted into the cabinet through the detergent opening. 
     The storage includes a storage frame retracted into the cabinet through the detergent opening, a detergent reservoir seated in the storage frame and storing the detergent therein, and an auxiliary detergent container disposed adjacent to the detergent reservoir in the storage frame, and having an open top face. 
     The detergent reservoir includes a casing having an open top face and storing the detergent therein, and a cap member detachably coupled to the top face of the casing, and the cap member includes a gripping portion extending toward the auxiliary detergent container and positioned on the open top face of the auxiliary detergent container. 
     In one implementation, the detergent opening may be defined in a front face of the cabinet, the storage may be retracted into the detergent opening along a front and rear direction, and the gripping portion may be positioned on a front portion of the auxiliary detergent container. 
     In one implementation, the auxiliary detergent container may include a front wall and a side wall, and include a detergent storing space surrounded by the front wall and the side wall and exposed by the open top face of the auxiliary detergent container. 
     In one implementation, the detergent reservoir may be disposed to surround the front portion and a side portion of the auxiliary detergent container, the cap member may further include a flange portion protruding toward the open top face of the auxiliary detergent container, and the flange portion may extend along the front wall and the side wall of the auxiliary detergent container, and the gripping portion may be formed on the front portion positioned on the front wall of the auxiliary detergent container. 
     In one implementation, the gripping portion may further include a protrusion protruding downward from the flange portion. 
     In one implementation, the detergent reservoir may include a detergent injection portion positioned on a front side of the detergent reservoir and having a detergent injection hole defined therein, a detergent discharge portion positioned on a rear side of the detergent reservoir, wherein the detergent is discharged from the detergent discharge portion, and a connection portion for connecting the detergent injection portion and the detergent discharge portion with each other, and the front wall of the auxiliary detergent container may face at least a portion of the detergent injection portion, and the side wall of the auxiliary detergent may face at least a portion of the connection portion. 
     In one implementation, the detergent injection portion may include a lateral protrusion more protruding in a lateral direction than the connection portion, the front wall of the auxiliary detergent container may be positioned rearward of the lateral protrusion, and the gripping portion may extend rearward from the lateral protrusion. 
     In one implementation, the detergent reservoir may include a pair of detergent reservoirs, the pair of detergent reservoirs may be arranged adjacent to each other in the lateral direction, and the auxiliary detergent container may be positioned between respective connection portions of the pair of detergent reservoirs, and respective lateral protrusions of the pair of detergent reservoirs may be positioned in front of the auxiliary detergent container. 
     In one implementation, a front portion of the flange portion may extend toward the auxiliary detergent container to be longer than a side portion of the flange portion positioned on the side wall of the auxiliary detergent container. 
     In one implementation, the cap member may include a ventilation hole defined in the detergent injection portion for communicating an interior and an exterior of the detergent reservoir with each other. 
     In one implementation, a sensor terminal and a detergent valve may be arranged on a rear face of the casing, the sensor terminal and the detergent valve may protrude rearward from the casing, and a rear face of the storage frame may be opened at positions respectively corresponding to the sensor terminal and the detergent valve, and may include a holding portion extending at a portion between the sensor terminal and the detergent valve. 
     In one implementation, the laundry treating apparatus may further include a dispenser disposed inside the cabinet and disposed on the storage, a stopper disposed on the dispenser and protruding toward the storage, and an engaging portion disposed on the storage and protruding toward the dispenser. 
     The stopper may be positioned spaced forwardly apart from the engaging portion in a state where the storage is retracted into the detergent opening, and in a process where the storage extends from the detergent opening, the engaging portion may be in contact with the stopper, so that an extension distance of the storage may be restricted. 
     In one implementation, the laundry treating apparatus may further include an elastic bar disposed on the storage, wherein a front end of the elastic bar forms a free end, wherein the engaging portion is disposed rearward of the front end, and the front end of the elastic bar may be exposed outward of the detergent opening in the state where the engaging portion is in contact with the stopper and thus the extension of the storage is restricted. 
     In one implementation, the laundry treating apparatus may further include a guide protrusion having a smaller width than the stopper and extending rearward from the stopper, the engaging portion may have a groove defined at a position facing the guide protrusion, and the guide protrusion may be inserted into the groove in the state where the engaging portion is in contact with the stopper. 
     In one implementation, one face of the guide protrusion facing the storage may be inclined so as to move away from the storage as a distance from the stopper increases. 
     The embodiments of the present disclosure may provide the laundry treating apparatus that may effectively improve the usability of the storage in which the detergent is stored. 
     In one example, the embodiments of the present disclosure may provide the laundry treating apparatus that may effectively improve the usage efficiency of the detergent feeder. 
     In one example, the embodiments of the present disclosure may provide the laundry treating apparatus in which the cap member of the detergent reservoir of the storage may be conveniently handled. 
     In one example, the embodiments of the present disclosure may provide the laundry treating apparatus that may effectively prevent the unintentional leakage of the detergent. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the present disclosure and together with the description serve to explain the principle of the present disclosure. In the drawings: 
         FIG. 1  is a perspective view illustrating a laundry treating apparatus according to an embodiment of the present disclosure; 
         FIG. 2  is a top view of a laundry treating apparatus according to an embodiment of the present disclosure; 
         FIG. 3  is a top view of a detergent feeder of a laundry treating apparatus according to an embodiment of the present disclosure; 
         FIG. 4  is an exploded view of a detergent feeder in an embodiment of the present disclosure; 
         FIG. 5  is a view illustrating a state in which storage is extended from a laundry treating apparatus in an embodiment of the present disclosure; 
         FIG. 6  illustrates a state of a detergent feeder in  FIG. 3  being cut along a line A-A; 
         FIG. 7  is a view illustrating an engaging protrusion in an embodiment of the present disclosure; 
         FIG. 8  is a view illustrating an engaging elastic portion in which caps are respectively formed at both ends in an embodiment of the present disclosure; 
         FIG. 9  is a perspective view illustrating an engaging protrusion and an engaging elastic portion in a state in which storage is retracted in an embodiment of the present disclosure; 
         FIG. 10  is a cross-sectional view illustrating a state in which storage is extended in an embodiment of the present disclosure; 
         FIG. 11  is a cross-sectional view illustrating a state in which storage is retracted in  FIG. 10 ; 
         FIG. 12  is a cross-sectional view illustrating a state in which a retraction process of storage in  FIG. 11  is terminated; 
         FIG. 13  is a view illustrating that a cap is formed at a rear end and an engaging elastic portion is slid at a front end in an embodiment of the present disclosure; 
         FIG. 14  is a perspective view illustrating an engaging elastic portion and an engaging protrusion in  FIG. 13 ; 
         FIG. 15  is a cross-sectional view illustrating an engaging elastic portion and an engaging protrusion in  FIG. 14 ; 
         FIG. 16  is a view illustrating a sagging preventing portion in a state in which storage is extended in an embodiment of the present disclosure; 
         FIG. 17  is an enlarged view of a sagging preventing portion in  FIG. 16 ; 
         FIG. 18  is a view illustrating a sagging preventing elastic portion of a fixing portion in an embodiment of the present disclosure; 
         FIG. 19  is a top view of storage in an embodiment of the present disclosure; 
         FIG. 20  is an exploded view of storage according to an embodiment of the present disclosure; 
         FIG. 21  is a view illustrating a cap member of a detergent reservoir according to an embodiment of the present disclosure; 
         FIG. 22  is a cutaway view illustrating a detergent reservoir in  FIG. 19  taken along a line B-B; 
         FIG. 23  is an enlarged view of a region D in  FIG. 22 ; 
         FIG. 24  is an enlarged view of a region C in  FIG. 19 ; 
         FIG. 25  is a view illustrating a bottom face of a dispenser in an embodiment of the present disclosure; 
         FIG. 26  is an enlarged view of a region E in  FIG. 25 ; 
         FIG. 27  is a view illustrating a stopper and an engaging portion in an extended situation of storage in an embodiment of the present disclosure; 
         FIG. 28  is a cross-sectional view taken along a line F-F of a stopper and an engaging portion in  FIG. 27 ; 
         FIG. 29  is a view illustrating a state in which an elastic bar in  FIG. 27  is pressed; 
         FIG. 30  is a view illustrating a state in which an engaging portion is removed in an embodiment of the present disclosure; 
         FIG. 31  is a top view of a detergent reservoir in an embodiment of the present disclosure; 
         FIG. 32  is an enlarged view illustrating a ventilation hole of a detergent reservoir in  FIG. 31 ; 
         FIG. 33  is a view illustrating a cross-section of a ventilation hole in an embodiment of the present disclosure; 
         FIG. 34  is a view illustrating an interior of a detergent reservoir in an embodiment of the present disclosure; 
         FIG. 35  is a view illustrating a detergent reservoir in  FIG. 34  cut along a line G-G; 
         FIG. 36  is a view illustrating a bottom face of a cap member in an embodiment of the present disclosure; 
         FIG. 37  is a view illustrating an edge region of a detergent reservoir in an embodiment of the present disclosure; 
         FIG. 38  is a view viewed from rearward of a detergent reservoir in an embodiment of the present disclosure; 
         FIG. 39  illustrates a state in which a detergent valve in  FIG. 38  is rotated in a closed state; 
         FIG. 40  is a view illustrating a valve hole of a detergent reservoir in an embodiment of the present disclosure; 
         FIG. 41  is a view illustrating a detergent valve in an embodiment of the present disclosure; 
         FIG. 42  is a view illustrating a detergent valve inserted into a valve hole in an embodiment of the present disclosure; 
         FIG. 43  is a view illustrating a state in which a detergent valve in  FIG. 42  is inserted into a valve hole in an open state; 
         FIG. 44  is a view illustrating a state in which a detergent valve in  FIG. 43  is rotated in a closed state; 
         FIG. 45  is a view illustrating a coupling groove of a detergent valve in an embodiment of the present disclosure; 
         FIG. 46  is a view illustrating a cross-section of a detergent valve coupled to a valve hole in an embodiment of the present disclosure; 
         FIG. 47  is a view illustrating a state in which a detergent valve in  FIG. 46  is coupled to an inlet port of a detergent pump; and 
         FIG. 48  is a view illustrating a rear face of a storage frame into which a detergent reservoir is inserted in an embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings such that a person having ordinary knowledge in the technical field to which the present disclosure belongs may easily implement the embodiment. 
     However, the present disclosure is able to be implemented in various different forms and is not limited to the embodiment described herein. In addition, in order to clearly describe the present disclosure, components irrelevant to the description are omitted in the drawings. Further, similar reference numerals are assigned to similar components throughout the specification. 
     Duplicate descriptions of the same components are omitted herein. 
     In addition, it will be understood that when a component is referred to as being ‘connected to’ or ‘coupled to’ another component herein, it may be directly connected to or coupled to the other component, or one or more intervening components may be present. On the other hand, it will be understood that when a component is referred to as being ‘directly connected to’ or ‘directly coupled to’ another component herein, there are no other intervening components. 
     The terminology used in the detailed description is for the purpose of describing the embodiments of the present disclosure only and is not intended to be limiting of the present disclosure. 
     As used herein, the singular forms ‘a’ and ‘an’ are intended to include the plural forms as well, unless the context clearly indicates otherwise. 
     It should be understood that the terms ‘comprises’, ‘comprising’, ‘includes’, and ‘including’ when used herein, specify the presence of the features, numbers, steps, operations, components, parts, or combinations thereof described herein, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, or combinations thereof. 
     In addition, in this specification, the term ‘and/or’ includes a combination of a plurality of listed items or any of the plurality of listed items. In the present specification, ‘A or B’ may include ‘A’, ‘B’, or ‘both A and B’. 
       FIG. 1  is a perspective view illustrating a laundry treating apparatus  1  according to an embodiment of the present disclosure,  FIG. 2  is a view of the laundry treating apparatus  1  viewed from above, and  FIG. 3  is a top view of a detergent feeder  100  of the laundry treating apparatus  1  according to an embodiment of the present disclosure. 
     Referring to  FIGS. 1 to 3 , the laundry treating apparatus  1  according to an embodiment of the present disclosure includes a cabinet  10  having a detergent opening  15  defined in a front face thereof, a tub  20  installed inside the cabinet  10 , a drum  30  rotatably installed inside the tub  20 , and a detergent feeder  100  installed in the detergent opening  15 . 
     The laundry treating apparatus  1  may include a washing machine in which a cloth is inserted into a washing tank to be washed, rinsed, dehydrated, and the like, a dryer in which a wet cloth is inserted to be dried, or the like. 
     The laundry treating apparatuses  1  may be classified into a top loading type laundry treating apparatus and a front loading type laundry treating apparatus.  FIG. 1  illustrates the front loading type laundry treating apparatus  1 , but this is only for convenience of description. Because the present disclosure is not applied only to front loading type washing machines, the present disclosure may be applicable to top loading type washing machines. 
     As shown in  FIG. 1 , the laundry treating apparatus  1  may have the cabinet  10  forming an appearance of the laundry treating apparatus  1 , and a manipulation unit having a display that receives various control commands from a user and displays information on an operating state. The laundry treating apparatus  1  may include a door  40  installed on the front face of the cabinet  10  and pivotably disposed to allow laundry to enter and exit. 
     The cabinet  10  forms the appearance of the laundry treating apparatus  1 . A space in which various components constituting the laundry treating apparatus  1  may be accommodated may be defined inside the cabinet  10 . The drum  30  for accommodating therein the laundry inserted through the door  40  may be installed inside the cabinet  10 . 
     Specifically, the tub  20  containing wash water therein and the drum  30  that is rotatably disposed inside the tub  20  to accommodate the laundry therein may be arranged inside the cabinet  10 . A balancer for compensating for eccentricity caused by the rotation may be installed on one side of the drum  30 . 
     The manipulation unit may include various keys for manipulating the operating state of the laundry treating apparatus  1  and the display for displaying the operating state of the laundry treating apparatus  1 . The door  40  may contain a transparent member such as tempered glass and the like such that an interior of the cabinet  10  or the drum  30  may be visually identified. 
     In one example, in an embodiment of the present disclosure, the laundry treating apparatus  1  may have the detergent opening  15  defined in a front face thereof, and the detergent feeder  100  may be disposed inside the detergent opening  15 . 
     A position of the detergent opening  15  may be various, and  FIG. 1  illustrates a state in which the detergent opening  15  is defined in parallel with the manipulation unit in a lateral direction Y. 
     The detergent feeder  100  may be installed in the detergent opening  15  that may be defined at one side of an upper portion of the cabinet  10 . The detergent feeder  100  may include storage  300  capable of storing detergent therein.  FIG. 3  is the top view of the detergent feeder  100 . 
     The detergent feeder  100  serves to automatically feed the detergent stored in the storage  300  to an interior of the drum  30  during the washing operation. The detergent refers to a substance that may improve a washing effect of the laundry, which may include liquid fabric detergent and liquid fabric softener. 
       FIG. 4  illustrates a state in which the detergent feeder  100  is disassembled. The detergent feeder  100  may include a dispenser  200 , the storage  300 , and a feeder casing  400  from above as shown in  FIG. 4 . 
     The detergent may be stored in the storage  300 . The storage  300  may be inserted into the detergent opening  15  along a front and rear direction X and may include a front handle  305 , a storage frame  390 , and a detergent reservoir  310  seated in the storage frame  390 . 
     In the present disclosure, the front and the rear may be defined based on the detergent opening  15 . For example, it may be understood that a direction from the detergent opening  15  toward the outside of the cabinet  10  is a forward direction and a direction from the detergent opening  15  toward an interior of the cabinet  10  is a rearward direction. That is, even when the door  40  and the detergent opening  15  are arranged on different faces of the cabinet  10 , the front and the rear may be defined around the detergent opening  15 . 
     In one example,  FIG. 5  illustrates a view of the storage  300  extended from the detergent opening  15  viewed from the outside of the cabinet  10 . 
     When the user grips and then pulls the handle  305  disposed on a front face of the storage  300 , the storage  300  in a state of being retracted into the detergent opening  15  slides forward from a state of being stacked with the dispenser  200  and the feeder casing  400 , so that the storage  300  may be extended outward of the cabinet  10  or outward of the detergent opening  15 . Similarly, when the user pushes the handle  305  rearward, the storage  300  may slide and be inserted into the detergent opening  15 . 
     In one example,  FIG. 6  illustrates a state of the detergent feeder  100  in  FIG. 3  being cut along a line A-A. Referring to  FIG. 6 , an embodiment of the present disclosure may include a fixing portion disposed inside the cabinet  10  and disposed to face one face extending in the front and rear direction X of the storage  300  retracted into the detergent opening  15 . 
     In addition, an embodiment of the present disclosure may include an engaging protrusion  320  disposed on said one face of the storage  300  and protruding toward the fixing portion, and an engaging elastic portion  220  disposed in the fixing portion, protruding toward said one face of the storage  300 , and positioned in parallel with the engaging protrusion  320  along the front and rear direction X to be pressed and elastically deformed by the engaging protrusion  320  in the retraction process of the storage  300 . 
     At least a portion of the engaging elastic portion  220  may be detachably coupled to the fixing portion. 
     Specifically, the fixing portion may be disposed inside the cabinet  10  and disposed to face said one face of the storage  300  extending in the front and rear direction X.  FIG. 6  illustrates a state in which a bottom face of the fixing portion is disposed to face a top face of the storage  300 . 
     In the present disclosure, the fixing portion may face one of the top face and both side faces of the storage  300 , and may be the feeder casing  400  or a separate component. However, in an embodiment of the present disclosure, the fixing portion may correspond to the dispenser  200  of the detergent feeder  100  capable of feeding water to the storage  300  during the washing process. 
     Unlike the storage  300 , the fixing portion may not be retracted or extended through the detergent opening  15  in the state of being installed inside the cabinet  10 , and may be disposed in a state of being fixed at a specific position. 
     The engaging protrusion  320  may be disposed on said one face of the storage  300  facing the fixing portion, for example, the dispenser  200 .  FIG. 6  illustrates a state in which the engaging protrusion  320  is disposed on the top face of the storage  300 , and  FIG. 7  illustrates an enlarged view of the engaging protrusion  320 . 
     The engaging protrusion  320  may protrude from said one face of the storage  300  toward the fixing portion. A protrusion shape of the engaging protrusion  320  may vary as needed. 
     The engaging elastic portion  220  may be disposed in the fixing portion. The engaging elastic portion  220  may be formed to protrude from the fixing portion toward the storage  300 . For example, as shown in  FIG. 6 , the engaging elastic portion  220  may protrude downward from the dispenser  200 .  FIG. 7  illustrates the engaging elastic portion  220  disposed in the fixing portion. 
     The engaging elastic portion  220  may be constructed such that at least a portion thereof overlaps the engaging protrusion  320  along the front and rear direction X. That is, the engaging elastic portion  220  may be positioned in parallel with the engaging protrusion  320  along the front and rear direction X. Accordingly, at least a portion of the engaging elastic portion  220  may be pressed and elastically deformed by the engaging protrusion  320  during the retraction or the extension process of the storage  300 . 
     A protrusion shape of the engaging elastic portion  220  may be varied as needed. For example, the engaging protrusion  320  and the engaging elastic portion  220  may have a shape in which a center thereof protrude such that a front side and a rear side thereof have a gentle slope. 
     The engaging elastic portion  220  may be made of a material having elasticity and capable of being deformed and restored, and may have higher elasticity than the engaging protrusion  320 . In addition, the engaging elastic portion  220  may have higher elasticity than a material of the fixing portion. 
       FIG. 9  is a view illustrating the engaging elastic portion  220  and the engaging protrusion  320  in a state in which the storage  300  is retracted into the detergent opening  15  according to an embodiment of the present disclosure. Referring to  FIG. 9 , at least a portion, for example, a portion including an end protruding downward of the engaging elastic portion  220  may be disposed to overlap the engaging protrusion  320  along the front and rear direction X or a retraction direction of the storage  300 . 
       FIG. 10  illustrates a state in which the storage  300  in the extended state slides into the detergent opening  15 . Referring to  FIG. 10 , the storage  300  may be extended such that the engaging protrusion  320  is positioned forward of the engaging elastic portion  220 , and the engaging protrusion  320  may move rearward toward the engaging elastic portion  220  in the retraction process. 
     A state in which the engaging protrusion  320  in  FIG. 10  is moved rearward and overlaps the engaging elastic portion  220  in the vertical direction Z is illustrated in  FIG. 11 . 
     Referring to  FIG. 11 , in the retraction process of the storage  300 , the engaging protrusion  320  may be moved rearward while passing the engaging elastic portion  220 . That is, the engaging elastic portion  220  may be positioned so as to overlap with the engaging protrusion  320  in the vertical direction Z, and may be pressed and deformed by the engaging protrusion  320 . 
     The engaging elastic portion  220  pressed by the engaging protrusion  320  may be deformed such that a protruding height thereof decreases, and accordingly, the engaging protrusion  320  may pass the engaging elastic portion  220  and move rearward. 
     A state in which the engaging protrusion  320  shown in  FIG. 11  is moved rearward and passes the engaging elastic portion  220  and the storage  300  is completely retracted into the detergent opening  15  is shown in  FIG. 12 . 
     Referring to  FIG. 12 , when the storage  300  is completely retracted into the detergent opening  15 , the engaging protrusion  320  passes the engaging elastic portion  220  and is positioned rearward of the engaging elastic portion  220 . The engaging elastic portion  220  may be elastically restored when the engaging protrusion  320  passes the engaging elastic portion  220  after the engaging elastic portion  220  is deformed by the engaging protrusion  320 . 
     The user may extend the storage  300  from the detergent opening  15  using the handle  305  and inject the detergent into the storage  300 . The storage  300  in which the detergent is stored may be retracted by sliding back into the detergent opening  15 . In this connection, the user may be aware of the retraction situation of the storage  300  through a contact relationship between the engaging protrusion  320  and the engaging elastic portion  220 . 
     For example, the user may recognize the contact between the engaging protrusion  320  and the engaging elastic portion  220  in the process of gripping the handle  305  and pushing the storage  300  rearward, and a predetermined pressure may be transmitted to the user. As the engaging protrusion  320  passes the engaging elastic portion  220 , the force transmitted to the user may be reduced, and the user may identify that the storage  300  has completely reached the retracted state. 
     In addition, as a restoring force of the engaging elastic portion  220  is transmitted to the engaging protrusion  320 , the engaging elastic portion  220  may provide a moving force to the engaging protrusion  320  such that the storage  300  moved such that the engaging protrusion  320  passes the engaging elastic portion  220  is retracted to a distal end of the detergent opening  15 . 
     Accordingly, the user feels a certain reaction force. Then, the reaction force disappears while retracting the storage  300  into the detergent opening  15  and rather a force that induces the retraction is provided, so that the user may feel a soft and stable retraction feeling of the storage  300 . 
     In one example, referring again to  FIG. 8 , in the laundry treating apparatus  1  according to an embodiment of the present disclosure, at least the portion of the engaging elastic portion  220  may be detachably coupled to the fixing portion. 
     Specifically, the engaging elastic portion  220  may be manufactured separately from the fixing portion, and at least the portion thereof may be constructed to be coupled to the fixing portion. In this connection, the engaging elastic portion  220  may be coupled to the fixing portion to be detachable therefrom. 
     The engaging elastic portion  220  corresponds to an elastic body that is deformed by being pressed by the engaging protrusion  320  and restored. It may be advantageous that the engaging elastic portion  220  is made of a material that it is easier to deform than a material of the fixing portion and has excellent elasticity. An embodiment of the present disclosure may be advantageous because the engaging elastic portion  220  is manufactured separately from the fixing portion, so that the engaging elastic portion  220  may be manufactured using a material different from that of the fixing portion having high rigidity. 
     In addition, manufacturing of the fixing portion may include a heat-treatment process. In this case, the material of the fixing portion may decrease in elasticity and increase in rigidity after the heat-treatment. When the engaging elastic portion  220  is molded together with the fixing portion, the engaging elastic portion  220  may also decrease in the elasticity by the heat-treatment process. 
     That is, an embodiment of the present disclosure is advantageous in that a change in properties of the material resulted from a series of molding processes included in the manufacture of the fixing portion may be avoided as the engaging elastic portion  220  is manufactured separately from the fixing portion and is detachably coupled to the fixing portion. 
     In one example, in the state in which the storage  300  is retracted into the detergent opening  15 , in the laundry treating apparatus  1  according to an embodiment of the present disclosure, a maximally protruded point  228  of the engaging elastic portion  220  may be positioned forwardly of a maximally protruded point  322  of the engaging protrusion  320  and the engaging elastic portion  220  may rearwardly support the engaging protrusion  320 . 
     The maximum protrusion point  228  of the engaging elastic portion  220  refers to a point of the engaging elastic portion  220  protruding farthest from the fixing portion in the vertical direction Z, and the maximum protrusion point  322  of the engaging protrusion  320  refers to a point protruding farthest from the storage  300  in the vertical direction Z. The maximum protrusion point  322  of the engaging protrusion  320  is indicated in  FIG. 7 , and the maximum protrusion point  228  of the engaging elastic portion  220  is indicated in  FIG. 9 . 
     Referring to  FIG. 7 , in the engaging protrusion  320 , a front pressing portion  321  inclined may be positioned in front of the maximally protruded point  322 , a flat pressing portion  323  may be positioned at the rear of the maximally protruded point  322 , and a rear pressing portion  324  may be positioned at the rear of the flat pressing portion  323 . 
     In the retraction process of the storage  300 , the engaging elastic portion  220  may be pressed by the rear pressing portion  324  of the engaging protrusion  320 . Thereafter, as the maximally protruded point  228  of the engaging elastic portion  220  is supported on the flat pressing portion  323  of the engaging protrusion  320 , the deformed state of the engaging elastic portion  220  may be maintained. Accordingly, the reaction force by the engaging elastic portion  220  may be provided stepwise in the retraction process of the storage  300 . 
     When the maximally protruded point  322  of the engaging protrusion  320  passes the maximally protruded point  228  of the engaging elastic portion  220 , while the front pressing portion  321  of the engaging protrusion  320  supports the engaging elastic portion  220 , the engaging elastic portion  220  is gradually restored. 
     In one example, referring to  FIG. 9 , in the engaging elastic portion  220 , a front inclined portion  227  may be positioned in front of the maximally protruded point  228 , and a rear inclined portion  229  may be positioned at the rear of the maximally protruded point  228 . 
     The front inclined portion  227  may extend rearward from a front end of the engaging elastic portion  220  and may become closer to the storage  300  as the front inclined portion  227  is further away from the front end. That is, the front inclined portion  227  may be formed to be inclined such that a protruding height thereof increases toward the maximally protruded point  228 . 
     In one example, the rear inclined portion  229  may extend rearward from the front inclined portion  227 , and may be constructed to move away from the storage  300  as a distance from the front inclined portion  227  increases. That is, the rear inclined portion  229  may be formed to be inclined such that a protruding height thereof decreases rearwardly from the maximally protruded point  228 . 
     In the process in which the storage  300  is retracted into the detergent opening  15 , the engaging protrusion  320  presses the front inclined portion  227  to elastically deform the engaging elastic portion  220 . In the state in which the storage  300  is retracted into the detergent opening  15 , the engaging protrusion  320  may be in contact with and supported by the rear inclined portion  229 . 
     In one example, the front inclined portion  227  may have a longer and smoother inclined face than the rear inclined portion  229 .  FIG. 15  illustrates a state in which a length L 1  of the front inclined portion  227  is larger than a length L 2  of the rear inclined portion  229 . 
     Accordingly, the engaging elastic portion  220  may provide a reaction force of a relatively low increase rate to the engaging protrusion  320  in the retraction process of the storage  300  such that the retraction process is not disturbed, and provide a reaction force of a relatively high increase rate in the extension process of the storage  300  such that unnecessary extension of the storage  300  may be prevented. 
     In one example, referring to  FIG. 12 , when the storage  300  is completely retracted into the detergent opening  15 , the maximally protruded point  322  of the engaging protrusion  320  may be positioned rearward of the maximally protruded point  228  of the engaging elastic portion  220 , and the engaging elastic portion  220  may support the engaging protrusion  320  rearward. 
     That is, the engaging protrusion  320  may be pressed rearwardly by the engaging elastic portion  220 , and accordingly, the retracted state of the storage  300  may be stably maintained. Further, when the user extends the storage  300 , as the extension of the storage  300  starts, the reaction force caused by the engaging elastic portion  220  may be immediately recognized, so that the user may effectively recognize the extension situation of the storage  300  and may restrict the unnecessary extension of the storage  300 . 
     In one example, referring to  FIGS. 8 to 9 , in an embodiment of the present disclosure, the fixing portion has a through-hole  215  that opens toward said one face of the storage  300 . A central portion of the engaging elastic portion  220  may pass through the through-hole  215  and protrude toward the storage  300 . 
     A shape of the through-hole  215  may vary, and may penetrate the fixing portion. In the engaging elastic portion  220 , at least one of a front end and a rear end may be coupled to and fixed to the fixing portion, and the central portion of the engaging elastic portion  220  may pass through the through-hole  215  and protrude toward said one face of the storage  300 . 
     The maximally protruded point  228  of the engaging elastic portion  220  may be positioned at the central portion. As the central portion passes through the through-hole  215  and protrudes toward the storage  300 , a protrusion distance of the engaging elastic portion  220  may be effectively increased such that the deformation and the restoration thereof are facilitated by the pressing of the engaging protrusion  320 .  FIGS. 10 to 12  illustrate a state in which the engaging elastic portion  220  protruding to pass through the through-hole  215  is pressed by the engaging protrusion  320  to be deformed and is restored. 
     For example, when the fixing portion corresponds to the dispenser  200  and when the engaging elastic portion  220  protrudes to pass through the through-hole  215  of the dispenser  200 , compared to a case in which the engaging elastic portion  220  protrudes directly from a bottom face of the dispenser  200 , a total protruding length of the engaging elastic portion  220  may be increased, which may be advantageous for the elastic deformation. 
     In one example, as shown in  FIGS. 8 to 9 , in an embodiment of the present disclosure, the front end and the rear end of the engaging elastic portion  220  may be positioned on an opposite side of the storage  300  with respect to the fixing portion, and the engaging elastic portion  220  may be bent such that the central portion extending from the front end and the rear end passes through the through-hole  215 . 
     For example, the fixing portion may correspond to the dispenser  200 , the engaging elastic portion  220  may extend in the front and rear direction X, the front end and the rear end of the engaging elastic portion  220  may be positioned on the top face of the dispenser  200 , and the central portion of the engaging elastic portion  220  may pass through the through-hole  215  and may extend from the top face of the dispenser  200  toward the bottom face of the dispenser  200 . 
     The engaging elastic portion  220  may be constructed such that a strap or a straight member is bent or curved. That is, the engaging elastic portion  220  has an empty space on an opposite side of a contact face with the engaging protrusion  320 , so that the engaging elastic portion  220  may be easily deformed by the pressing of the engaging protrusion  320  and elastically restored. 
     In one example, referring to  FIG. 9 , in an embodiment of the present disclosure, a fastening groove  233  may be defined at least one of forward and rearward of the through-hole  215 . The engaging elastic portion  220  may be positioned such that at least one of the front end and the rear end thereof overlaps the fastening groove  233 , and may be penetrated by a fastening member  235 , which is inserted into the fastening groove  233 , and coupled to the fixing portion. 
     The fastening groove  233  may be defined to overlap the front end or the rear end of the engaging elastic portion  220  in the vertical direction Z as being defined at least one of forward and rearward of the through-hole  215 . The fastening member  235  may couple the engaging elastic portion  220  with the fixing portion by penetrating an end of the engaging elastic portion  220  overlapping the fastening groove  233  and being inserted into the fastening groove  233 . The fastening member  235  may have a length like a bolt or the like, may be inserted into the fastening groove  233 , and may be easily coupled to and removed from the fastening groove  233 . 
     In one example, as shown in  FIG. 9 , an embodiment of the present disclosure may further include a fastening portion  230  and a cap  221 . 
     The fastening portion  230  may be disposed in the fixing portion and protrude along an insertion direction of the fastening member  235 , and the fastening groove  233  may be defined at a center of the fastening portion  230 . As the fastening groove  233  is defined in the fastening member  235  protruding from the fixing portion, a length of the fastening groove  233  into which the fastening member  235  may be inserted may be easily secured. 
     The cap  221  may be disposed on at least one of the front end and the rear end of the engaging elastic portion  220 . That is, the cap  221  may be disposed at an end of the engaging elastic portion  220  overlapping the fastening groove  233 . 
     The cap  221  may have a space defined therein, and an outer circumferential face  223  thereof may be disposed to surround an outer circumferential face of the fastening portion  230 . That is, the fastening portion  230  may be coupled to be inserted into the cap  221 . 
     In the cap  221  into which the fastening portion  230  is inserted, a top face  224  may be penetrated by the fastening member  235 . Accordingly, as the fastening portion  230  protruding from the fixing portion is inserted into the cap  221  and the cap  221  is coupled with the fastening portion  230  by the fastening member  235 , the cap  221  may have a stable coupling structure with the fastening portion  230 . 
     In one example, as shown in  FIGS. 8 to 9 , in an embodiment of the present disclosure, the fastening grooves  233  may be respectively defined forward and rearward of the through-hole  215 . The front end and the rear end of the engaging elastic portion  220  may be respectively coupled to the fastening grooves  233  that respectively overlap the front end and the rear end, so that positions of the front end and the rear end of the engaging elastic portion  220  may be fixed. Further, the central portion may be elastically deformed. Accordingly, the engaging elastic portion  220  may be implemented in a stable structure as the front end and the rear end are fixed despite the elastic deformation of the central portion. 
     In one example,  FIG. 13  illustrates a state in which the front end of the engaging elastic portion  220  is constructed to be slidable and the cap  221  is formed at the rear end of the engaging elastic portion  220 .  FIG. 14  illustrates the engaging elastic portion  220  in  FIG. 13  and the engaging protrusion  320  together, and  FIG. 15  illustrates a cross-sectional view of the engaging elastic portion  220  of  FIG. 13 . 
     As above, in an embodiment of the present disclosure, the engaging elastic portion  220  may be constructed such that one of the front end and the rear end is coupled to the fastening groove  233  and the other is slidable on the fixing portion. 
     When both the front end and the rear end of the engaging elastic portion  220  are fixed to the fixing portion, for example, the dispenser  200 , coupling stability between the engaging elastic portion  220  and the fixing portion may be improved. As shown in  FIG. 13 , when one of the front end and the rear end is disposed to be slidable on the fixing portion, an amount of elastic deformation of the central portion may be increased. 
     That is, when the engaging elastic portion  220  is pressed and deformed by the engaging protrusion  320 , a slidable end of the engaging elastic portion  220  may be slid away from the center of the engaging elastic portion  220  to satisfy an amount of change in the protruding height of the engaging elastic portion  220 . 
     Accordingly, in the engaging elastic portion  220  in which the front end or the rear end is constructed to be slidable, an amount of change in the protruding height allowed on the same through-hole  215  may be increased. Accordingly, a design restriction such as a height of the engaging protrusion  320  and the like may be reduced and the elastic force transmitted from the engaging elastic portion  220  to the engaging protrusion  320  may be reduced, so that smooth extension and retraction of the storage  300  may be induced. 
     In one example, in an embodiment of the present disclosure, the engaging elastic portion  220  may be constructed such that the rear end thereof is coupled to the fastening groove  233  and the front end thereof is slidable on the fixing portion. 
     Referring to  FIGS. 13 to 15 , in the engaging elastic portion  220 , the rear end is fixed and the front end forms a sliding end  222  that is slidable. Accordingly, a larger amount of deformation may be accepted in the extension process than in the retraction process of the storage  300 . 
     That is, the engaging elastic portion  220  may provide a greater reaction force to the engaging protrusion  320  in the extension process of the storage  300 . Therefore, the reaction force is reduced in the retraction process of the storage  300 , thereby providing a soft retraction feeling. 
     A fixing force for the retracted storage  300  may be increased and the larger amount of deformation by the engaging protrusion  320  may be accepted in the extension process, so that a large reaction force may be provided during the extension and the stable retracted state of the storage  300  may be maintained. 
     In one example, referring to  FIGS. 13 to 15 , an embodiment of the present disclosure may further include a guide  238 . 
     The guide  238  may be disposed in the fixing portion, and a central portion thereof may be penetrated in the front and rear direction X by the front sliding end  222  of the engaging elastic portion  220 . 
     The central portion of the guide  238  is penetrated by the sliding end  222  of the engaging elastic portion  220  along the front and rear direction X and the guide  238  fixes the position of the sliding end  222  while surrounding the sliding end  222  of the engaging elastic portion  220 . 
     In an embodiment of the present disclosure, the front end of the engaging elastic portion  220  is constructed to be slidable and the front end of the engaging elastic portion  220  is not deviated from a sliding region using the guide  238 , thereby securing structural stability. 
     In one example,  FIG. 16  illustrates a sagging preventing elastic portion  510  viewed from the outside of the dispenser  200  in the extension process of the storage  300  according to an embodiment of the present disclosure, and  FIG. 17  is an enlarged view of the sagging preventing elastic portion  510  and a sagging preventing protrusion  520  in  FIG. 16 . 
     In addition,  FIG. 18  illustrates a position of the sagging preventing elastic portion  510  in the fixing portion, and  FIG. 19  illustrates a position of the sagging preventing protrusion  520  in the storage  300 . 
     Referring to  FIGS. 16 and 19 , an embodiment of the present disclosure may further include the sagging preventing elastic portion  510  disposed at the front end of the fixing portion and protruding toward the top face of the storage  300 , and the sagging preventing protrusion  520  disposed on the top face of the storage  300 , protruding toward the fixing portion, and rearwardly spaced from the sagging preventing elastic portion  510  by a set extension distance. 
     The sagging preventing elastic portion  510  may be disposed at the front end of the fixing portion. In addition, the sagging preventing elastic portion  510  may protrude toward the top face of the storage  300  like the engaging elastic portion  220  and may be elastically deformed and restored. The sagging preventing protrusion  520  may be disposed on the top face of the storage  300  and may protrude toward the fixing portion. 
     In the extension process of the storage  300 , when a center of gravity of the storage  300  is positioned outward of the detergent opening  15  based on the front and rear direction X, a front end of the storage  300  may be inclined downward by a self-load thereof. 
     In an embodiment of the present disclosure, as the sagging preventing elastic portion  510  and the sagging preventing protrusion  520  are arranged, in the state in which the storage  300  is extended by the set extension distance, the sagging preventing protrusion  520  may prevent sagging of the storage  300  by pressing and being in close contact with the sagging preventing elastic portion  510 . 
     That is, the sagging preventing elastic portion  510  may prevent the sagging of the storage  300  by pressing and supporting the sagging preventing protrusion  520  overlapped in the vertical direction Z. The set extension distance refers to an extension distance of the storage  300  set in advance such that the user may conveniently use the storage  300  even when the storage  300  is not completely separated from the detergent opening  15 . 
     The sagging preventing elastic portion  510  is positioned in the fixing portion, for example, at the front end of the dispenser  200  to overlap the sagging preventing protrusion  520  on the storage  300  in the extended state and is advantageous in providing an elastic force. 
     In addition, as shown in  FIG. 19 , the sagging preventing protrusion  520  may be disposed to be spaced apart from the front end of the storage  300  by the set extension distance. That is, an extension distance in which the sagging preventing protrusion  520  physically overlaps the sagging preventing elastic portion  510  in the extension process corresponds to the set extension distance according to an embodiment of the present disclosure. 
     That is, as shown in  FIG. 19 , a separation distance P from the front end of the storage  300  to the sagging preventing protrusion  520  may correspond to the set extension distance according to an embodiment of the present disclosure. 
     When the storage  300  extends from the detergent opening  15  by the set extension distance, the sagging preventing protrusion  520  may be positioned below the sagging preventing elastic portion  510  and pressed and supported by the sagging preventing elastic portion  510 . 
     The user may identify the set extension distance considering appropriateness of use by recognizing a resistance or reaction force generated as the sagging preventing protrusion  520  and the sagging preventing elastic portion  510  overlap each other in the extension process of the storage  300 . In addition, as will be described later, the storage  300  may be extended by the set extension distance and used even by restriction on the extension by an engaging portion  353  and a stopper  250 . 
     In one example, in an embodiment of the present disclosure, the engaging protrusion  320  may be disposed on the top face of the storage  300 , and the sagging preventing protrusion  520  may be positioned in front of the engaging protrusion  320  and the engaging elastic portion  220 . 
     Referring to  FIG. 18 , the sagging preventing elastic portion  510  positioned at the front end of the fixing portion may be positioned in front of the engaging elastic portion  220 . In addition, referring to  FIG. 19 , the sagging preventing protrusion  520  may be positioned in front of the engaging protrusion  320 . 
     Further, referring to  FIGS. 18 and 19 , the sagging preventing protrusion  520  may be positioned in front of the engaging elastic portion  220  in the retraction and extension processes of the storage  300 . Accordingly, a situation in which the sagging preventing protrusion  520  unnecessarily contacts the engaging elastic portion  220  may be prevented. 
     In one example, as will be described later, the engaging portion  353  and the stopper  250  may be arranged to restrict the extension distance of the storage  300  to the set extension distance. The engaging portion  353  may protrude from the storage  300  toward the fixing portion, for example, the dispenser  200 , and the stopper  250  may be disposed in the fixing portion and protrude toward the storage  300 . 
     When a movement of the engaging portion  353  is restricted by the stopper  250  in the extension process of the storage  300 , the extension of the storage  300  may be restricted. Further, in a state in which the engaging portion  353  and the stopper  250  are in contact with each other, the sagging preventing protrusion  520  may be positioned below the sagging preventing elastic portion  510  and pressed. 
     In addition, the engaging portion  353  may be positioned in parallel with the sagging preventing protrusion  520  along a width direction Y of the storage  300 , and the stopper  250  may be positioned in parallel with the sagging preventing elastic portion  510 . The stopper  250  and the sagging preventing elastic portion  510  may be arranged in a front portion of the bottom face of the dispenser  200 . 
     In one example,  FIG. 19  illustrates the storage  300  viewed from above, and  FIG. 20  illustrates a state in which the detergent reservoir  310  is separated from the storage  300 . 
     Referring to  FIGS. 19 and 20 , in an embodiment of the present disclosure, the storage  300  includes a storage frame  390 , a detergent reservoir  310  having a cap member  330 , and an auxiliary detergent container  340 . 
     A top face of the storage frame  390  is opened and the storage frame  390  is retracted into the cabinet  10  through the detergent opening  15 . That is, the storage frame  390  may be retracted or extended by sliding through the detergent opening  15  in a state in which the detergent reservoir  310  is coupled thereto or seated thereon. 
     In the detergent opening  15 , the feeder casing  400  shown in  FIG. 4  may be installed. The storage frame  390  may be supported by the feeder casing  400  and may be retracted by sliding into the detergent opening  15 . 
     The detergent reservoir  310  may include a casing  339  and the cap member  330 . A top face of the casing  339  may be opened and the detergent may be stored in the casing  339 . Further, the cap member  330  may be coupled to the open top face of the casing  339  in a detachable manner. 
     The casing  339  of the detergent reservoir  310  may have a shape extending in the front and rear direction X, and the storage frame  390  may also have a shape extending in the front and rear direction X. The cap member  330  may have a groove defined therein extending along an edge of the cap member  330 , and an end of a side wall of the casing  339  may be inserted into the groove and detachably coupled to the cap member  330 . 
     The detergent reservoir  310  may include a plurality of detergent reservoirs.  FIGS. 19 and 20  illustrate that two detergent reservoirs  310  arranged in parallel with each other in the lateral direction Y according to an embodiment of the present disclosure are inserted in the storage frame  390 . The detergent reservoir  310  may be retracted into or extended from the detergent opening  15  while being inserted into the storage frame  390 . 
     In one example, the auxiliary detergent container  340  may be disposed in the storage frame  390 . The auxiliary detergent container  340  may be separately manufactured and coupled to the storage frame  390  or may be integrally molded with the storage frame  390 . 
     A top face of the auxiliary detergent container  340  is open, so that auxiliary detergent may be fed by the user and stored. The auxiliary detergent is not necessarily different from the detergent stored in the detergent reservoir  310 , but a detergent having a different nature from that of the detergent in the detergent reservoir  310  is stored in response to a request of the user to improve a washing efficiency. 
     In some cases, the user may not store the detergent in the detergent reservoir  310 , but store the detergent in the auxiliary detergent container  340  and feed the detergent to the drum  30  in the washing process. 
     The auxiliary detergent container  340  may include a front wall and a side wall. The auxiliary detergent may be injected and stored into a detergent storing space surrounded by the front and side walls. The front wall and the side wall of the auxiliary detergent container  340  may be integrally molded with the storage frame  390  or manufactured separately to have a coupling relationship with the storage frame  390 . 
     The auxiliary detergent container  340  may be disposed adjacent to the detergent reservoir  310 . For example, the detergent reservoir  310  may surround a front portion and a side portion of the auxiliary detergent container  340  and may be in contact with the front wall and the side wall of the auxiliary detergent container  340 . 
       FIGS. 19 and 20  illustrate a state in which the auxiliary detergent container  340  is disposed adjacent to at least a portion of the detergent reservoir  310  in the lateral direction Y according to an embodiment of the present disclosure. 
     In one example,  FIG. 21  is a view of the cap member  330  of the detergent reservoir  310  viewed from below, and  FIG. 22  is a cross-sectional view of the storage  300  in  FIG. 19  taken along a line B-B. 
     Referring to  FIGS. 21 and 22 , in an embodiment of the present disclosure, the cap member  330  may include a flange portion  333 . The flange portion  333  may extend from the top face of the casing  339  along the top face of the auxiliary detergent container  340 . 
     Specifically, the flange portion  333  may correspond to a protruding portion of the cap member  330  extending in parallel with the top face of the casing  339 . The flange portion  333  may be formed on an entirety or only a portion of the edge of the cap member  330 . 
     The flange portion  333  may be constructed to extend from the cap member  330  and cross an upper space defined by the front wall and the side wall of the auxiliary detergent container  340 , and may extend along at least a portion of the front wall and the side wall of the auxiliary detergent container  340 . 
     The flange portion  333  may include a gripping portion  332 . The gripping portion  332  may be provided with a protrusion  331  protruding downward from an extended end of the flange portion  333 . As the gripping portion  332  is constructed as a portion of the flange portion  333 , the gripping portion  332  is constructed to protrude from the top face of the casing  339 . 
     The user may grip the gripping portion  332  to separate the cap member  330  from the detergent reservoir  310 . The gripping portion  332  protrudes in parallel with the top face of the casing  339 , so that the user may easily grip the gripping portion  332 . 
     In addition, the protrusion  331  may be disposed at an end of the gripping portion  332  along an extending direction from the cap member  330 , and the protrusion  331  may protrude downward.  FIG. 21  illustrates the gripping portion  332  on which the protrusion  331  is formed downward as a portion of the flange portion  333 . 
       FIG. 22  illustrates a cross-section of the gripping portion  332  on which the protrusion  331  extending away from the top face of the casing  339  to be positioned on the open top face of the auxiliary detergent container  340  and protruding downward is formed.  FIG. 23  illustrates an enlarged view of a region D in  FIG. 22 . 
     The gripping portion  332  may have the protrusion  331  protruding downward so as to be advantageously gripped by the user. That is, when the user grips the gripping portion  332 , a finger is caught by the protrusion  331  protruding downward, so that the user may effectively grip the gripping portion  332 . 
     In one example, the gripping portion  332  is disposed on the flange portion  333  extending from the top face of the casing  339  toward the top face of the auxiliary detergent container  340 . That is, the gripping portion  332  is positioned above the auxiliary detergent container  340  and prevents the auxiliary detergent contained in the auxiliary detergent container  340  from splashing to the outside. 
     Specifically, the detergent reservoir  310  and the auxiliary detergent container  340  are extended from the detergent opening  15  together with the storage frame  390  or retracted to the detergent opening  15 , 
     In the auxiliary detergent container  340 , whose top face is opened by the motion generated in this process, the internal auxiliary detergent may splash outward due to inertia or impact. 
     Specifically, the detergent reservoir  310  and the auxiliary detergent container  340  are extended from the detergent opening  15  or retracted into the detergent opening  15  together with the storage frame  390 . Because of a motion occurred in such process, the auxiliary detergent inside the auxiliary detergent container  340  with the open top face may splash outward because of inertia or an impact. 
     An embodiment of the present disclosure may block the flow of the auxiliary detergent of scattering or splashing from the auxiliary detergent container  340  and prevent leakage of the auxiliary detergent as the flange portion  333  and the gripping portion  332  of the cap member  330  extend above the auxiliary detergent container  340 , that is, on the open top face of the auxiliary detergent container. 
     In addition, because the gripping portion  332  has the protrusion  331  protruding downward at the extended end thereof, the protrusion  331  contributes to suppressing the motion of the auxiliary detergent splashing out of the auxiliary detergent container  340 . 
     For example, the auxiliary detergent splashing toward the gripping portion  332  is not able to be scattered outward by an extended face  375  of the gripping portion  332  and is returned to the auxiliary detergent container  340 , but may still have a fast speed in the return process. Accordingly, the returned auxiliary detergent may induce another scattering of the auxiliary detergent by applying an impact or transmitting a kinetic force to the auxiliary detergent inside the auxiliary detergent container  340 . 
     However, in an embodiment of the present disclosure, as the protrusion  331  protruding downward is disposed on the gripping portion  332 , the flow of the auxiliary detergent that did not leak outward by the extended face  375  of the gripping portion  332  is inhibited once again by the protrusion  331  of the gripping portion  332 , so that the speed of the auxiliary detergent is greatly reduced. Therefore, in the process in which the scattered auxiliary detergent returns back to the auxiliary detergent container  340 , the kinetic force may be greatly reduced and stable return may be induced. 
     In one example, referring to  FIGS. 19 to 21 , in an embodiment of the present disclosure, the detergent reservoir  310  may be positioned in front of and next to the auxiliary detergent container  340 , the flange portion  333  may be positioned at a front portion and a side portion of the top face of the auxiliary detergent container  340 , and the gripping portion  332  may be formed at a front portion of the flange portion  333  positioned at the front portion of the auxiliary detergent container  340 . 
     Specifically, the detergent reservoir  310  is positioned in front of and next to the auxiliary detergent container  340 , so that the flange portion  333  may be positioned on the top face of the auxiliary detergent container  340 . The detergent reservoir  310  may include a plurality of detergent reservoirs and the plurality of detergent reservoirs may be respectively disposed in the front of and next to the auxiliary detergent container  340 . Alternatively, at least one face of the detergent reservoir  310  may be bent such that one of the detergent reservoirs may be positioned both in the front and next to the auxiliary detergent container  340 . 
       FIG. 19  illustrates a state in which the auxiliary detergent container  340  is disposed between the two detergent reservoirs  310 , and the detergent reservoir  310  has a shape with a front portion protruding such that a portion of the detergent reservoir  310  may be positioned in front of the auxiliary detergent container  340 , according to an embodiment of the present disclosure. 
     Based on the positional relationship between the detergent reservoir  310  and the auxiliary detergent container  340  as described above, the auxiliary detergent may be prevented from splashing forward and lateralward of the auxiliary detergent container  340 . 
     Furthermore, the flange portion  333  may have the gripping portion  332  formed at the front side of the auxiliary detergent container  340 . Accordingly, the situation in which the auxiliary detergent splashed forward of the auxiliary detergent container  340  may be more effectively prevented by the gripping portion  332 . 
     The storage  300  is moved inside the detergent opening  15  along the front and rear direction X, so that the auxiliary detergent is easy to splash forward. Therefore, an embodiment of the present disclosure may effectively suppress the leakage of the auxiliary detergent by disposing the gripping portion  332  at the front side of the auxiliary detergent container  340  on the flange portion  333  positioned at the front portion and the side portion of the top face of the auxiliary detergent container  340 . 
     Furthermore, in the situation in which the storage  300  is extended by the set extension distance or fully extended from the cabinet  10 , the user grips the gripping portion  332  positioned at the front side of the auxiliary detergent container  340 , so that the cap member  330  may be efficiently separated from the casing  339  of the detergent reservoir  310 , which is advantageous. 
     In one example, in an embodiment of the present disclosure, the detergent reservoir  310  may include a detergent injection portion  313 , a connection portion  315 , and a detergent discharge portion  317 . The connection portion  315  may be positioned next to the auxiliary detergent container  340  and the detergent injection portion  313  may be positioned in front of the auxiliary detergent container  340 . 
     The detergent injection portion  313  may be positioned at a front end of the detergent reservoir  310 , and may have a detergent injection hole  312  defined therein into which the detergent is injected. The detergent injection hole  312  may be defined in the cap member  330 . As the detergent injection portion  313  is disposed at the front end of the detergent reservoir  310 , even when the user extends the storage  300  by the set extension distance described above, the detergent may be injected into the detergent injection hole  312 . 
     The connection portion  315  may be positioned at a center of the detergent reservoir  310 . That is, the connection portion  315  may correspond to a portion connecting the detergent injection portion  313  and the detergent discharge portion  317  with each other. The detergent injection portion  313 , the connection portion  315 , and the detergent discharge portion  317  may be manufactured separately from each other.  FIGS. 19 and 20  illustrate the detergent reservoir  310  in which the detergent injection portion  313 , the connection portion  315 , and the detergent discharge portion  317  are integrally formed according to an embodiment of the present disclosure. 
     The detergent injected through the detergent injection portion  313  may be stored together in the connection portion  315  and the detergent discharge portion  317  as well as in the detergent injection portion  313 , and may be discharged through a detergent valve  380  to be described later of the detergent discharge portion  317  and provided into the drum  30  in the washing process. 
     The auxiliary detergent container  340  may be disposed adjacent to the connection portion  315  of the detergent reservoir  310  in the lateral direction Y. In addition, as shown in  FIG. 19 , the detergent injection portion  313  constructed to protrude in the lateral direction Y than the connection portion  315  may be positioned in front of the auxiliary detergent container  340 . 
     Specifically, the detergent injection portion  313  may have a width greater than that of the connection portion  315  and a portion of the detergent injection portion  313  may protrude in the lateral direction Y than the connection portion  315 . That is, the detergent injection portion  313  may include a lateral protrusion protruding in the lateral direction Y than the connection portion  315 . 
     The auxiliary detergent container  340  may be positioned rearward of the protrusion of the detergent injection portion  313 , and the gripping portion  332  may be formed to extend rearward from the detergent injection portion  313 . That is, the gripping portion  332  may be disposed at the lateral protrusion protruding from the detergent injection portion  313  in the lateral direction Y than the connection portion  315 . 
     As above, the detergent reservoir  310  may be effectively positioned next to and in front of the auxiliary detergent container  340  by a shape of the detergent reservoir  310  and an arrangement of the auxiliary detergent container  340 , and the auxiliary detergent of the auxiliary detergent container  340  may be prevented from leaking outward by the flange portion  333  and the gripping portion  332 . 
     In addition, a ventilation hole  360  as will be described later may be defined in a top face of the detergent injection portion  313  in the detergent reservoir  310 , that is, a portion corresponding to the top face of the detergent injection portion  313  in the cap member  330 , 
     In an embodiment of the present disclosure, as the gripping portion  332  is disposed in the detergent injection portion  313 , when the user separates the detergent reservoir  310  from the storage frame  390 , the user lifts the detergent reservoir  310  while gripping the gripping portion  332 . Thus, the detergent injection portion  313  in which the ventilation hole  360  is defined is lifted upward first, so that the leakage of the detergent through the ventilation hole  360  may be prevented in the separation process of the detergent reservoir  310 . 
     In one example,  FIG. 48  illustrates a rear face of the storage frame  390  in a state in which the detergent reservoir  310  is inserted. Referring to  FIG. 48 , a sensor terminal  610  and the detergent valve  380  may be arranged to protrude on a rear face of the detergent reservoir  310 . 
     Specifically, a capacity sensor for measuring a detergent capacity may be installed on the rear face of the detergent reservoir  310 , and the sensor terminal  610  of the capacity sensor may protrude rearward from the rear face of the detergent reservoir  310 . 
     In addition, as will be described later, the detergent valve  380  may be installed on the rear face of the detergent reservoir  310  to protrude. In an embodiment of the present disclosure, the sensor terminal  610  may be positioned in an upper portion of the rear face of the detergent reservoir  310 , and the detergent valve  380  may be positioned in a lower portion of the rear face of the detergent reservoir  310 . 
     The rear face of the storage frame  390  may face the rear face of the detergent reservoir  310 , and portions of the storage frame  390  corresponding to the sensor terminal  610  and the detergent valve  380  of the detergent reservoir  310  may be opened. In one example, a holding portion  620  disposed to extend at a portion between the sensor terminal  610  and the detergent valve  380  may be disposed on the rear face of the storage frame  390 . 
     The holding portion  620  may have a shape extending along the width direction Y of the storage frame  390 , and the rear face of the storage frame  390  may have a shape in which both portions above and below the holding portion  620  are open as shown in  FIG. 48 . 
     When the user grips the gripping portion  332  and lifts the detergent reservoir  310  from the storage frame  390 , as a movement of the detergent valve  380  in the upward direction is suppressed by the holding portion  620 , the detergent injection portion  313  of the detergent reservoir  310  may be separated from the storage frame  390  earlier than the detergent discharge portion  317 , and the leakage of the detergent through the ventilation hole  360  may be further suppressed. 
     In one example, referring to  FIG. 19 , in an embodiment of the present disclosure, the detergent reservoir  310  may include a pair of detergent reservoirs, and the pair of detergent reservoirs  310  may be arranged adjacent to each other in the lateral direction Y. Respective faces of the detergent injection portions  313  facing each other may be in contact with each other, respective connection portions  315  may be spaced apart from each other, and the auxiliary detergent container  340  may be positioned between the respective connection portions  315  of the pair of detergent reservoirs  310 . 
     Accordingly, the auxiliary detergent container  340  may be positioned so as to be surrounded by the pair of detergent reservoirs  310  on one plane. In addition, while the auxiliary detergent container  340  is disposed in the internal space of the storage frame  390 , the pair of detergent reservoirs  310  may secure sufficient space and improve detergent storage capacity. 
     In one example, the flange portion  333  may be disposed by being divided for the front portion and the side portion of the top face of the auxiliary detergent container  340 . However, as shown in  FIG. 21 , the flange portion  333  may extend continuously along the front portion and the side portion of the top face of the auxiliary detergent container  340 . 
     Further, referring to  FIG. 21 , in the flange portion  333 , the front portion disposed in the front portion of the top face of the auxiliary detergent container  340  may extend toward the auxiliary detergent container  340  to be longer than the side portion disposed in the side portion of the top face of the auxiliary detergent container  340 . 
     As described above, when considering a moving path of the storage  300 , the auxiliary detergent container  340  has a higher possibility of leakage of the auxiliary detergent at the front portion than the side portion. Accordingly, in an embodiment of the present disclosure, the front portion of the flange portion  333  is formed to be longer than the side portion, so that the leakage of the auxiliary detergent in the forward direction from the auxiliary detergent container  340  may be more effectively suppressed. 
     The front portion of the flange portion  333  may correspond to the gripping portion  332 .  FIG. 21  illustrates a state in which an extended length L 4  of the front portion is longer than an extended length L 3  of the side portion. 
     In one example,  FIG. 24  illustrates an enlarged view of a region C in  FIG. 19 , and the engaging portion  353  disposed on the storage  300  is illustrated. In addition, the bottom face of the dispenser  200  is illustrated in  FIG. 25 , and the stopper  250  disposed on the bottom face of the dispenser  200  is illustrated. 
       FIG. 26  illustrates an enlarged view of a region E in  FIG. 25 , and the stopper  250  of the dispenser  200  is illustrated in the region E. The stopper  250  and the engaging portion  353  are illustrated together in  FIG. 27 . 
     Referring to  FIGS. 24 to 27 , an embodiment of the present disclosure further includes the stopper  250  and the engaging portion  353 . In an embodiment of the present disclosure, the dispenser  200  is disposed inside the cabinet  10 , that is, inside the detergent opening  15 , and is disposed to face the top face of the storage  300 . 
     The stopper  250  may be disposed on the dispenser  200  and may protrude downward toward the storage  300 . The stopper  250  may be disposed on the bottom face of the dispenser  200 , and may be disposed so as not to overlap the engaging elastic portion  220  and the sagging preventing elastic portion  510  described above in the front and rear direction X. That is, the stopper  250  may be disposed to be spaced apart from the engaging elastic portion  220  and the sagging preventing elastic portion  510  in the lateral direction Y. 
     The engaging portion  353  may be disposed on the storage  300  and may protrude upward toward the dispenser  200 . The engaging portion  353  may be disposed so as not to overlap the engaging protrusion  320  in the front and rear direction X. For example, the engaging protrusion  320  may be disposed on a side wall of the storage frame  390 , and the engaging portion  353  may be disposed at a center of the storage frame  390  based on the lateral direction Y. 
     The stopper  250  may be disposed in parallel with the engaging portion  353  along the front and rear direction X and overlap with the engaging portion  353 . Thus, in the extension process of the storage  300 , the stopper  250  may overlap the engaging portion  353 , and thus, the movement may be restricted. 
     In addition, in the state in which the storage  300  is retracted into the detergent opening  15 , the stopper  250  may be disposed to be forwardly spaced apart from the engaging portion  353 , and a separation distance between the stopper  250  and the engaging portion  353  may correspond to the set extension distance described above. 
     Thus, when the user extends the storage  300  by gripping the handle  305  of the storage  300  in the state in which the storage  300  is retracted into the detergent opening  15 , when the engaging portion  353  of the storage  300  in in contact with the stopper  250  of the dispenser  200 , the extension of the storage  300  may be restricted and the user may store the detergent using the storage  300  extended by the set extension distance. 
     That is, in the state in which the engaging portion  353  is in contact with the stopper  250 , the sagging preventing protrusion  520  of the storage  300  may overlap the sagging preventing elastic portion  510  of the dispenser  200  in the vertical direction Z to prevent sagging of the storage  300 . 
       FIG. 28  is a cross-sectional view viewed from the rear of the state in which the engaging portion  353  is in contact with the stopper  250  as shown in  FIG. 27 . In an embodiment of the present disclosure, as the engaging portion  353  and the stopper  250  are arranged, it is easy for the user to extend the storage  300  only by the set extension distance, so that the detergent feeder  100  may be efficiently utilized. 
     In one example, referring to  FIG. 27 , in an embodiment of the present disclosure, an elastic bar  350  may be further included in the storage  300 , and the elastic bar  350  may be exposed outward of the front end of the storage  300  and the detergent opening  15  in the state in which the storage  300  is extended by the set extension distance. 
     Specifically, the elastic bar  350  may have a rear end fixed to the storage  300 , and a front end thereof may form a free end. Accordingly, the elastic bar  350  may be elastically deformed and the front end thereof may be moved in the vertical direction Z with respect to the rear end. This may be accomplished by the user pressing the front end of the elastic bar  350 . 
     The engaging portion  353  may protrude upward at a position between the front end and the rear end of the elastic bar  350 . Thus, when the engaging portion  353  is in contact with the stopper  250  and the extension of the storage  300  is restricted, the front end of the elastic bar  350  positioned in front of the engaging portion  353  may be exposed to the outside of the detergent opening  15 , which facilitates the user to press the front end of the elastic bar  350 . 
     The user may separate the engaging portion  353  downward from the stopper  250  by pressing the front end of the elastic bar  350  exposed forward of the detergent opening  15 . As will be described later, the user may completely extend and separate the storage  300  from the detergent opening  15  while releasing the extension restriction based on the set extension distance. 
     In one example,  FIG. 29  illustrates the elastic bar  350  in a state of being moved downward as a pressing portion  352  of the front end is pressed according to an embodiment of the present disclosure. 
     Referring to  FIGS. 27 and 29 , in an embodiment of the present disclosure, the storage  300  may have a deformation space  359  defined below the front end of the elastic bar  350 . The elastic bar  350  may have the pressing portion  352  pressed by the user on a top face of the front end. The front end may be elastically deformed so as to move toward the deformation space  359  by a pressing force transmitted to the pressing portion  352 . 
     The storage  300  may have the deformation space  359  above which the elastic bar  350  is positioned. The elastic bar  350  may have the pressing portion  352  pressed by the user at the front end thereof. As shown in  FIG. 27 , a groove may be defined in the pressing portion  352  to facilitate the user&#39;s pressing. 
     The deformation space  359  may be positioned below the elastic bar  350 , and a width thereof may correspond to the elastic bar  350 . The rear end of the elastic bar  350  may be coupled with the storage  300  above the deformation space  359  or at the rear of the deformation space  359 . 
     The front end of the elastic bar  350  at which the pressing portion  352  is pressed may be positioned in the deformation space  359 . The elastic bar  350  may be elastically deformed such that the front end thereof moves downward when the pressing portion  352  is pressed. In this case, the engaging portion  353  protruding upward from the elastic bar  350  may also be moved downward. Therefore, the engaging portion  353  and the stopper  250  do not overlap each other based on the front and rear direction X, so that the user may extend the storage  300  completely. 
     As an entirety, the rear end, or a portion of the elastic bar  350  may be elastically deformed, the front end of the elastic bar  350  may move downward to be positioned inside the deformation space  359 . 
     In one example, referring to  FIG. 27 , in an embodiment of the present disclosure, the elastic bar  350  may include an upward extension portion  358  at which the rear end of the elastic bar  350  extends upward from a coupling point with the storage  300 , and the front end of the elastic bar  350  may extend forward from the upward extension portion  358  to form the free end. 
     Specifically, the elastic bar  350  may be positioned to be spaced upward from the bottom face of the storage  300 , that is, the storage frame  390  through the upward extension portion  358 . Accordingly, the front end of the elastic bar  350  may form the free end spaced apart from the bottom face of the storage frame  390 . 
     In addition, in an embodiment of the present disclosure, the elastic bar  350  may include a bent portion  356  positioned rearward of the engaging portion  353  and bent in the vertical direction Z. 
       FIG. 27  illustrates the bent portion  356  bent to protrude downward. The bent portion  356  may be formed in a bent or curved shape, so that the front end of the elastic bar  350  may be easily moved in the vertical direction Z. 
     That is, in an embodiment of the present disclosure, when the pressing portion  352  is pressed while the front end of the elastic bar  350  maintains a shape thereof with rigidity, the bent portion  356  may be deformed, so that the front end of the elastic bar  350  may be moved downward. 
     Unlike the front end or the rear end of the elastic bar  350 , the bent portion  356  may be made of a material having high elasticity, or may be integrally molded with the front end and the rear end as an entirety of the elastic bar  350  and be formed in a curved shape. 
     Referring to  FIG. 19  again, in an embodiment of the present disclosure, the engaging portion  353  is positioned rearward of the auxiliary detergent container  340 , so that the auxiliary detergent container  340  may be exposed to the outside of the detergent opening  15  in the state in which the storage  300  is extended and the engaging portion  353  is in contact with the stopper  250 . 
     As described above, because the position of the engaging portion  353  may correspond to the set extension distance with respect to the storage  300 , the auxiliary detergent container  340  may be positioned forward of the engaging portion  353  to facilitate the use of the storage  300  even when the user extends the storage  300  by the set extension distance. 
     Thus, in the state in which the storage  300  is extended by the set extension distance, the user may inject the detergent through the detergent injection hole  312  defined in front of the detergent reservoir  310  or may inject the auxiliary detergent into the auxiliary detergent container  340  positioned rearward of the detergent injection portion  313 . 
     In one example, in an embodiment of the present disclosure, the dispenser  200  may further include a guide protrusion  255 .  FIG. 26  illustrates the guide protrusion  255  enlarged and viewed from below, and  FIGS. 27 and 28  illustrate the guide protrusion  255  inserted into a groove  354 . 
     Referring to  FIGS. 26 to 28 , the guide protrusion  255  may extend rearward from the rear face of the stopper  250  and may have a smaller width than the stopper  250 . The engaging portion  353  may have the groove  354  defined at a center thereof in the width direction Y, and the guide protrusion  255  may be inserted into the groove  354  in the state in which the storage  300  is extended and the engaging portion  353  is in contact with the stopper  250 . 
     In one example,  FIG. 30  illustrates a state in which the front end of the elastic bar  350  is caught by the stopper  250  in a state in which the guide protrusion  255  is removed. In the extension process of the storage  300 , the front end of the elastic bar  350  protruding forward to form the free end may be unintentionally caught by the stopper  250  depending on a use environment. 
     In this case, the user becomes not able to extend the storage  300  by the set extension distance and the detergent reservoir  310  or the auxiliary detergent container  340  becomes not able to be exposed to the outside of the detergent opening  15 , which may make it difficult for the user to use the apparatus. 
     An embodiment of the present disclosure may include the guide protrusion  255  and the groove  354  to prevent the front end of the elastic bar  350  from interfering with the extension of the storage  300  by being in contact with the stopper  250 . 
     The guide protrusion  255  may have the smaller width than the stopper  250 , and the groove  354  may have a width corresponding to the guide protrusion  255 . The engaging portion  353  may have a larger width than the groove  354 . 
     The guide protrusion  255  extends rearward from a rear face of the stopper  250 . 
     Accordingly, the situation in which the elastic bar  350  is unintentionally positioned such that the front end overlaps the stopper  250  may be prevented. 
     For example, in the extension process of the storage, a vertical level of the front end of the elastic bar  350  may be restricted by the guide protrusion  255  before reaching the stopper  250 . Accordingly, the front end of the elastic bar  350  that has reached the stopper  250  is positioned at a vertical level lower than the stopper  250  by the guide protrusion  255 , so that the front end of the elastic bar  350  does not contact the stopper  250 . 
     In one example, the groove  354  is defined at the center of the engaging portion  353  and the engaging portion  353  moves forward in the state in which the guide protrusion  255  is inserted into the groove  354 , so that there is no restriction of the movement by the guide protrusion  255 . 
     When the engaging portion  353  reaches the stopper  250 , the engaging portion  353  having the larger width than the groove  354  overlaps and in contact with the stopper  250  having the larger width than the guide protrusion  255 . Therefore, the engaging portion  353  may be completely in contact with the stopper  250  and may restrict the extension of the storage  300  at the set extension distance. 
     In one example, in an embodiment of the present disclosure, as the guide protrusion  255  is further away from the stopper  250 , a protruding height thereof from the fixing portion gradually decreases, so that a bottom face thereof may be inclined. 
       FIG. 26  illustrates the guide protrusion  255  having the inclined bottom face viewed from below, and  FIG. 27  illustrates a state in which the guide protrusion  255  having the inclined bottom face is inserted into the groove  354 . 
     As the bottom face of the guide protrusion  255  is inclined such that the protruding length or height thereof decreases rearwardly, the situation in which the front end of the elastic bar  350  is unintentionally caught by the guide protrusion  255  and the movement thereof is restricted may be effectively prevented. Further, because the front end of the elastic bar  350  is naturally induced to be at a vertical level lower than the stopper  250  along the inclined bottom face, the unintended overlapping situation of the elastic bar  350  may be effectively prevented. 
     In one example,  FIG. 31  illustrates a view of the detergent reservoir  310  viewed from above,  FIG. 32  illustrates a view of the ventilation hole  360  of the detergent reservoir  310  viewed from above, and  FIG. 33  illustrates a cross-sectional view of the ventilation hole  360  cut in the vertical direction Z. 
     Referring to  FIGS. 31 to 33 , in an embodiment of the present disclosure, the ventilation hole  360  may be defined in the detergent reservoir  310  that stores the detergent therein and is inserted into the detergent opening  15  in the front and rear direction X. 
     Specifically, the detergent reservoir  310  may have a storage space defined therein for storing the detergent therein, and the ventilation hole  360  communicating the storage space with the outside may be defined in the top face of the detergent reservoir  310 . For example, the storage space may be defined in the casing  339  of the detergent reservoir  310 , and the ventilation hole  360  may be defined in the cap member  330  of the detergent reservoir  310 . 
     In the ventilation hole  360 , a central portion  362  between a lower end  361  facing the storage space and an upper end  363  facing the outside of the detergent reservoir  310  may extend parallel to the top face of the detergent reservoir  310 . 
     The lower end  361  of the ventilation hole  360  is opened to the storage space, and the upper end  363  of the ventilation hole  360  is opened to the outside of the detergent reservoir  310 . The ventilation hole  360  may have a shape in which the central portion  362  extends in parallel with the top face of the detergent reservoir  310  as central axes of the upper end  363  and the lower end  361  are spaced apart from each other. 
     That is, as shown in  FIG. 33 , the ventilation hole  360  may have a shape in which a center line thereof extending on a cross-section is bent. Accordingly, the situation in which the detergent inside the detergent reservoir  310  leaks to the outside may be effectively suppressed. 
     Specifically, the detergent reservoir  310  is moved forward and rearward along the detergent opening  15  by the user. In this process, the detergent inside the detergent reservoir  310  may leak to the outside through the ventilation hole  360 . 
     In an embodiment of the present disclosure, as the ventilation hole  360  defines the central portion  362  extending in parallel with the top face of the detergent reservoir  310  between the upper end  363  and the lower end  361  extending in the vertical direction Z, a region in which the storage space and the outside of the detergent reservoir  310  are directly in communication with each other in the vertical direction Z may be minimized. Therefore, the leakage of the detergent outward of the detergent reservoir  310  through the ventilation hole  360  may be minimized. 
     In one example, as shown in  FIG. 33 , in an embodiment of the present disclosure, the upper end  363  and the lower end  361  of the ventilation hole  360  may extend in the vertical direction Z of the detergent reservoir  310  and may be connected to the both ends of the central portion  362 , respectively. 
     Thus, a flowing path of the detergent for leaking from the storage space of the detergent reservoir  310  to the outside may be bent several times and the leakage of the detergent may be minimized. 
     In addition, in an embodiment of the present disclosure, the central portion  362  of the ventilation hole  360  may extend in a direction transverse to the front and rear direction X, for example, in the lateral direction Y of the detergent reservoir  310 . 
     The detergent flowing by the movement of the detergent reservoir  310  may have a momentum in the front and rear direction X like the detergent reservoir  310 . Therefore, in an embodiment of the present disclosure, in order to minimize the situation in which the detergent flowing in the front and rear direction X leaks to the outside through the upper end  363  while flowing through the central portion of the ventilation hole  360 , the central portion  362  is disposed to extend in the direction transverse to the front and rear direction X, for example, in the lateral direction Y, thereby reducing the leakage of the detergent. 
     In one example,  FIG. 32  illustrates an overlapping region  369  in which the upper end  363  and the lower end  361  of the ventilation hole  360  overlap each other in the vertical direction Z. Referring to  FIG. 32 , in an embodiment of the present disclosure, in the ventilation hole  360 , the upper end  363  and the lower end  361  overlap each other along the vertical direction Z to defined the overlapping region  369  in which the storage space is exposed to the outside. 
     A scheme of manufacturing the ventilation hole  360  or the cap member  330  of the detergent reservoir  310  having the ventilation hole  360  defined therein may be various. For example, an injection molding scheme using an upper mold corresponding to the upper end  363  of the ventilation hole  360  and a lower mold corresponding to the lower end  361 , or a processing scheme in which each of the upper end  363  and the lower end  361  of the ventilation hole  360  are perforated may be used. 
     In the various schemes as described above, in order to define the ventilation hole  360  according to an embodiment of the present disclosure, a process for defining the central portion  362  extending in parallel with the top face of the detergent reservoir  310  eventually needs to be added. Considering the extending direction and the like of the central portion  362 , the process for processing the central portion  362  may be more difficult than other processes. 
     However, in an embodiment of the present disclosure, as the overlapping region  369  between the upper end  363  and the lower end  361  of the ventilation hole  360  is set, the definition of the central portion  362  may be induced through the processing of the upper end  363  and the lower end  361 . 
     For example, in the injection molding scheme, the upper mold for defining the upper end  363  of the ventilation hole  360  and the lower mold for defining the lower end  361  are arranged to partially overlap each other along the vertical direction Z even though the central axes thereof are spaced apart from each other, so that the ventilation hole  360  according to an embodiment of the present disclosure may be processed. 
     In addition, also in the perforating scheme, the upper end  363  and the lower end  361  of the ventilation hole  360  are respectively perforated by a certain depth. When the upper end  363  and the lower end  361  are perforated to partially overlap each other, as in an embodiment of the present disclosure, the ventilation hole  360  having the overlapping region  369  may be processed. 
     As above, in an embodiment of the present disclosure, the central portion  362  in parallel with the top face of the detergent reservoir  310  is defined and the overlapping region  369  in which the upper end  363  and the lower end  361  overlap each other is defined, so that the process for defining the ventilation hole  360  may be effectively and simply improved. 
     In one example,  FIG. 34  illustrates an interior of the casing  339  of the detergent reservoir  310  in which a plurality of flow inhibiting walls  370  are formed according to an embodiment of the present disclosure, and  FIG. 35  is a view illustrating the detergent reservoir  310  in  FIG. 34  cut along a line G-G. 
     Referring to  FIGS. 34 and 35 , an embodiment of the present disclosure may further include a flow inhibiting wall  370  including a plurality of inhibiting walls arranged in the storage space and protruding from an inner face of the detergent reservoir  310  to inhibit the flow of the detergent toward the ventilation hole  360 . 
     The flow inhibiting wall  370  may be manufactured separately from the casing  339  of the detergent reservoir  310  and coupled to the casing  339 , or may be integrally formed with the casing  339 . The flow inhibiting wall  370  may include the plurality of inhibiting walls, may be coupled to the inner face of the detergent reservoir  310  to protrude from the inner face, and may suppress the flow of the detergent stored in the detergent reservoir  310 . 
     Kinetic energy of the detergent inside the detergent reservoir  310  may be reduced by the flow inhibiting wall  370 . Therefore, it is advantageous that a possibility of the leakage of the detergent through the ventilation hole  360  may be reduced. 
     In one example, the ventilation hole  360  may be defined at a front end of the top face. The flow inhibiting wall  370  may include a first inhibiting wall  371  positioned rearward of the ventilation hole  360  and extending in the direction transverse to the front and rear direction X. The ventilation hole  360  may be positioned between the front face of the detergent reservoir  310  and the first inhibiting wall  371 . 
     Specifically, the ventilation hole  360  may be defined in the top face of the detergent reservoir  310 , for example, at the front end of the cap member  330  of the detergent reservoir  310 . As described above, the front end of the detergent reservoir  310  may correspond to the detergent injection portion  313 . 
     The first inhibiting wall  371  may be positioned rearward of the ventilation hole  360 . Accordingly, the ventilation hole  360  may be defined between the front face of the detergent reservoir  310  and the first inhibiting wall  371  based on the front and rear direction X. Accordingly, the flow of detergent in the front and rear direction X may be blocked by the front face of the detergent reservoir  310  and the first inhibiting wall  371  and the leakage of the detergent through the ventilation hole  360  may be suppressed. 
     The first inhibiting wall  371  may extend in the direction transverse to the front and rear direction X. For example, the first inhibiting wall  371  may extend in parallel with the lateral direction Y to block the flow of the detergent in the front and rear direction X. The first inhibiting wall  371  may protrude upward from the bottom face of the detergent reservoir  310  or may extend from the side face of the detergent reservoir  310  in the lateral direction Y. 
     In one example, as shown in  FIGS. 34 and 35 , in an embodiment of the present disclosure, the ventilation hole  360  may be positioned at an edge of the front end of the top face to which the side face of the detergent reservoir  310  is connected. 
     In addition, the flow inhibiting wall  370  may include a second inhibiting wall  372  positioned on an opposite side of the side face around the ventilation hole  360  and extending along the front and rear direction X. The ventilation hole  360  may be positioned between the side face of the detergent reservoir  310  and the second inhibiting wall  372 . 
     As the ventilation hole  360  is positioned at the edge of the front end, the flow of the detergent may be restricted by the front face and side of the detergent reservoir  310  and flow energy of the detergent toward the ventilation hole  360  may be reduced. 
     In addition, the ventilation hole  360  may be defined between the second inhibiting wall  372  and the side face of the detergent reservoir  310 . The second inhibiting wall  372  may extend in parallel with the front and rear direction X. Accordingly, the flow of the detergent toward the ventilation hole  360  along the lateral direction Y may be restricted by the second inhibiting wall  372  and the side face of the detergent reservoir  310 . 
     In one example, in an embodiment of the present disclosure, the first inhibiting wall  371  is connected to the side face and the second inhibiting wall  372  is connected to the front face to partition an edge region  311  in which the ventilation hole  360  is defined in the storage space. 
     The edge region  311  is shown in  FIGS. 34 and 35 . In the ventilation hole  360  defined in the edge region  311 , the flow of the detergent in both the front and rear direction X and the lateral direction Y may be effectively blocked by the front face and the side face of the detergent reservoir  310 , the first inhibiting wall  371 , and the second inhibiting wall  372 . 
     Thus, the flow of the detergent inside the detergent reservoir  310  toward the ventilation hole  360  occurred in the retraction and the extension processes of the storage  300  or in other handling processes is blocked in all directions, so that the leakage may be suppressed. 
     In one example, referring to  FIGS. 34 and 35 , in an embodiment of the present disclosure, respective sides of the first inhibiting wall  371  and the second inhibiting wall  372  facing each other may be spaced apart from each other, so that an open face  373  of the edge region  311  may be defined. 
     As the open face  373  is defined between the first inhibiting wall  371  extending from the side face of the detergent reservoir  310  and the second inhibiting wall  372  extending from the front face of the detergent reservoir  310 , the edge region  311  and the remaining regions may communicate with each other in the storage space of the detergent reservoir  310 . 
     For example, when respective edges of the first inhibiting wall  371  and the second inhibiting wall  372  are coupled to each other, a communication area between the edge region  311  and the remaining regions becomes too small. Therefore, a flow of air in the storage space through the ventilation hole  360  may be restricted, thereby deteriorating a function of the ventilation hole  360 . 
     Thus, in an embodiment of the present disclosure, the open face  373  is defined between the first inhibiting wall  371  and the second inhibiting wall  372 , and a flow of a portion of the detergent is allowed together with the flow of the air through the open face  373 , so that the use of the entire storage space may be facilitated and the function of the ventilation hole  360  may be maintained. 
     In one example,  FIG. 36  illustrates a third inhibiting wall  374  and a fourth inhibiting wall  376  according to an embodiment of the present disclosure, and  FIG. 37  illustrates a state in which the third inhibiting wall  374 , the first inhibiting wall  371 , and the second inhibiting wall  372  are arranged together. 
     Referring to  FIGS. 36 and 37 , an embodiment of the present disclosure may further include the third inhibiting wall  374  positioned closer to the ventilation hole  360  than the first inhibiting wall  371  and the second inhibiting wall  372  and having one face disposed to face the open face  373 . 
     The third inhibiting wall  374  may be positioned within the edge region  311  that may be defined by the first inhibiting wall  371  and the second inhibiting wall  372 . That is, the third inhibiting wall  374  may be positioned closer to the ventilation hole  360  than the first inhibiting wall  371  and the second inhibiting wall  372 , and said one face of the third inhibiting wall  374  may be disposed to extend in parallel with the open face  373  and face the open face  373 . 
     That is, the third inhibiting wall  374  may be disposed to reduce the flow energy of detergent flowing through the open face  373  in the edge region  311 . As described above, while defining the open face  373  to secure the flow of the detergent and the air, the third inhibiting wall  374  may be disposed to block the flow of the detergent again in order to prevent the detergent from leaking through the ventilation hole  360  as the flow energy of the detergent introduced through the open face  373  is too high. 
     In one example, referring to  FIGS. 36 and 37 , in an embodiment of the present disclosure, the third inhibiting wall  374  may include an extended face  375  extending from said one face and extending in parallel with the first inhibiting wall  371  or the second inhibiting wall  372  while facing the first inhibiting wall  371  or the second inhibiting wall  372 . 
     Specifically, in the third inhibiting wall  374 , the extended face  375  extending from said one face facing the open face  373  of the edge region  311  may extend in parallel with the first inhibiting wall  371  or the second inhibiting wall  372 . 
     The extended face  375  may be extended along the first inhibiting wall  371  or along the second inhibiting wall  372  from the third inhibiting wall  374 , and may include a pair of extended faces to respectively correspond to the first inhibiting wall  371  and the second inhibiting wall  372 . 
     As the third inhibiting wall  374  has the extended face  375 , a limited flow path through which the detergent and the air may flow may be defined between the extended face  375  and the first inhibiting wall  371  or the second inhibiting wall  372 , and the flow energy of the detergent may be further reduced through the limited flow path. 
     In one example,  FIG. 34  illustrates the first inhibiting wall  371  and the second inhibiting wall  372  protruding from the bottom face of the detergent reservoir  310 , and  FIG. 36  illustrates the third inhibiting wall  374  protruding from the top face of the detergent reservoir  310 . 
     As in  FIGS. 34 and 36 , in an embodiment of the present disclosure, the first inhibiting wall  371  and the second inhibiting wall  372  protrude from the bottom face of the detergent reservoir  310 , and protruding ends of the first inhibiting wall  371  and the second inhibiting wall  372  are spaced apart from the top face of the detergent reservoir  310 . The third inhibiting wall  374  may protrude from the top face, and a protruding end thereof may be spaced apart from the bottom face. 
     The first inhibiting wall  371  and the second inhibiting wall  372  may protrude upward from the bottom face of the casing  339  of the detergent reservoir  310 , and the third inhibiting wall  374  may protrude downward from the cap member  330  of the detergent reservoir  310 . 
     In other words, by design or manufacturing tolerances, upper ends of the first inhibiting wall  371  and the second inhibiting wall  372  may be spaced apart from the cap member  330  and a lower end of the third inhibiting wall  374  may be spaced apart from the bottom face of the detergent reservoir  310 . 
     Accordingly, the detergent flowing in the edge region  311  may be partially allowed to flow beyond the upper ends of the first inhibiting wall  371  and the second inhibiting wall  372  or flow beyond the lower end of the third inhibiting wall  374 . However, because the flow path is formed to be bent in a zigzag shape in the vertical direction Z, the detergent may flow in the state in which the flow energy is reduced. 
     In one example, as described above, in an embodiment of the present disclosure, the detergent reservoir  310  may include the detergent injection portion  313 , the detergent discharge portion  317 , and the connection portion  315 . Further, the storage space of the detergent reservoir  310  may extend from the detergent injection portion  313  to the detergent discharge portion  317  through the connection portion  315 . 
     In addition, referring to  FIGS. 31 and 36 , an embodiment of the present disclosure may further include the fourth inhibiting wall  376 , and the fourth inhibiting wall  376  may be disposed so as to face the connection portion  315  in the detergent injection portion  313  and may extend in the direction transverse to the front and rear direction X. 
     The fourth inhibiting wall  376  may inhibit the flow of the detergent between the detergent injection portion  313  and the connection portion  315 . The fourth inhibiting wall  376  may protrude downward from the cap member  330  and may be disposed on the detergent injection portion  313  to face the connection portion  315 . 
     The fourth inhibiting wall  376  may extend in the direction transverse to the front and rear direction X. For example, the fourth inhibiting wall  376  may extend in the lateral direction Y, and may extend along an edge of the detergent injection hole  312  while forming a curved face as shown in  FIG. 36 . 
     Referring to  FIG. 34  again, an embodiment of the present disclosure may further include a fifth inhibiting wall  377 . The fifth inhibiting wall  377  may be disposed in the connection portion  315  and may extend to transverse the front and rear direction X. 
     The fifth inhibiting wall  377  may be disposed in the casing  339  of the detergent reservoir  310 , and may inhibit the detergent from flowing in the front and rear direction X from the connection portion  315  extending along the front and rear direction X. In addition, the fifth inhibiting wall  377  may be connected to a side face of the connection portion  315 , and rearwardly extend in a direction to be further away from the side face of the connection portion  315 . 
     That is, the fifth inhibiting wall  377  may be inclined rearwards as the fifth inhibiting wall  377  extends along the lateral direction Y. Accordingly, the fifth inhibiting wall  377  may more effectively inhibit the detergent from flowing forward as the storage  300  moves. 
     In one example,  FIG. 38  illustrates the detergent valve  380  coupled to the rear face of the detergent reservoir  310  according to an embodiment of the present disclosure, and  FIG. 39  illustrates a state in which the detergent valve  380  in  FIG. 38  is rotated in a closed state by the coupling. 
     Referring to  FIGS. 38 and 39 , an embodiment of the present disclosure includes the detergent valve  380  inserted into and coupled to a valve hole  397  defined in the rear face of the detergent reservoir  310 , and the detergent valve  380  is rotated by a predetermined amount in a forward direction in the valve hole  397  to be coupled to the valve hole  397 . 
     In addition, the detergent valve  380  may include a restriction protrusion  381  protruding in a radial direction of the detergent valve  380  from a rear end  382  thereof protruding rearward of the detergent reservoir  310 . An embodiment of the present disclosure may further include a forward stopper  391  protruding rearward from the rear face of the detergent reservoir  310  and positioned at a position along a forward path of the restriction protrusion  381  on a rotation path of the restriction protrusion  381 . 
     In the state in which the detergent valve  380  is rotated by the predetermined amount, the restriction protrusion  381  may be in contact with the forward stopper  391 , so that the rotation of the restriction protrusion  281  may be restricted. 
     Specifically, the detergent valve  380  is coupled to the detergent reservoir  310  and serves as means for discharging the detergent in the detergent reservoir  310  to the outside. As will be described below, when the storage  300  is completely retracted into the detergent opening  15  in the state in which the flow of the detergent is blocked, the detergent valve  380  may be pressurized by an inlet port  426  of the detergent pump and may be in an open state of allowing the flow of the detergent. 
     The detergent valve  380  may be inserted into the valve hole  397  defined in the rear face of the detergent reservoir  310 . The detergent valve  380  inserted into the valve hole  397  may be coupled to the valve hole  397  in a closed state in which separation from the valve hole  397  is restricted as the detergent valve  380  rotates in the forward direction. 
       FIG. 38  illustrates the detergent valve  380  that is inserted into the valve hole  397  and is in the open state, which is a state before the detergent valve  380  is rotated in the closed state.  FIG. 39  illustrates a state in which the detergent valve  380  is rotated by a certain amount in the forward direction from the open state in  FIG. 38  to be in the closed state. 
     The detergent valve  380  may be in the closed state when the detergent valve  380  is rotated by the certain amount in said one direction. As for a coupling scheme based on such rotation, a screw coupling scheme, an insertion fastening scheme of a protrusion and a groove as will be described below, and the like may be used. 
     In one example, in the state in which the detergent valve  380  is inserted into the valve hole  397 , the rear end  382  may be exposed by protruding rearward of the detergent reservoir  310 . Further, the restriction protrusion  381  protruding along a radial direction of the detergent valve  380  may be disposed at the rear end  382  of the detergent valve  380 . 
     The number of restriction protrusions  381  may vary.  FIGS. 38 and 39  illustrate a state in which two restriction protrusions  381  are positioned on opposite sides of each other according to an embodiment of the present disclosure. 
     In order to rotate the detergent valve  380  as necessary, the user may grip and rotate the detergent valve  380  using the restriction protrusion  381  or a grip groove  384  defined at the rear end  382  of the detergent valve  380  as will be described below. 
     In one example, the forward stopper  391  may be disposed on the rear face of the detergent reservoir  310 . The forward stopper  391  may protrude rearward from the rear face of the detergent reservoir  310 , and may be positioned on the rotation path of the restriction protrusion  381  along the forward direction. 
     In the open state, the restriction protrusion  381  of the detergent valve  380  and the forward stopper  391  may be spaced apart from each other by a certain amount of rotation angle to be in the closed state. 
     That is, when the detergent valve  380  inserted into the valve hole  397  is rotated by the certain amount in the forward direction, the restriction protrusion  381  may be brought into contact with the forward stopper  391 , so that the rotation of the restriction protrusion  381  may be restricted. Accordingly, even when the user rotates the detergent valve  380  for the closed state of the detergent valve  380 , because excessive rotation may be prevented by the forward stopper  391 , damage or breakage of the detergent valve  380  or other components may be prevented. 
     In one example,  FIG. 40  illustrates the valve hole  397  into which the detergent valve  380  is inserted and a coupling protrusion  396 , and  FIG. 41  illustrates a coupling groove  385  defined in the detergent valve  380 . 
     Referring to  FIGS. 40 and 41 , in an embodiment of the present disclosure, the detergent reservoir  310  includes the coupling protrusion  396  on an inner circumferential face of the valve hole  397 . The detergent valve  380  may have the coupling groove  385  defined in an outer circumferential face thereof through which the coupling protrusion  396  slides and is fixed. 
     The coupling protrusion  396  may protrude toward the detergent valve  380  from the inner circumferential face of the valve hole  397 . A shape and the number of coupling protrusions  396  may vary.  FIG. 40  illustrates a state in which two coupling protrusions  396  are positioned on opposite sides of each other according to an embodiment of the present disclosure. The coupling groove  385  may be defined in the outer circumferential face of the detergent valve  380 , and the coupling protrusion  396  may be slid and fixed in the coupling roove  385 . 
     Accordingly, as the detergent valve  380  is inserted into the valve hole  397 , the coupling protrusion  396  disposed in the valve hole  397  is inserted into the coupling groove  385 . As the detergent valve  380  rotates in the forward direction, the coupling protrusion  396  moves to an extended end of the coupling groove  385 . When the coupling protrusion  396  reaches the end of the coupling groove  385 , the closed state may be implemented while the rotation is restricted. 
     In this case, when the detergent valve  380  rotates excessively along the forward direction, the coupling protrusion  396  may be damaged or the coupling groove  385  may be damaged. Accordingly, the separation or the rotation of the detergent valve  380  may become impossible or recoupling may become difficult. 
     An embodiment of the present disclosure includes the restriction protrusion  381  on the detergent valve  380  and the forward stopper  391  on the detergent reservoir  310 , so that the rotation restriction by the restriction protrusion  381  and the forward stopper  391  is implemented in addition to the rotation restriction based on a relationship between the coupling protrusion  396  and the coupling groove  385 , thereby preventing the damage to the coupling groove  385  or the coupling protrusion  396 . 
     In one example, in an embodiment of the present disclosure, the detergent valve  380  includes an insertion portion  383  in front of the rear end  382  protruding rearward of the detergent reservoir  310 . The insertion portion  383  may be inserted into the detergent reservoir  310 , and the coupling groove  385  may be defined in an outer circumferential face of the insertion portion  383 . 
     Thus, in the insertion process of the detergent valve  380 , the coupling protrusion  396  of the valve hole  397  may be inserted and slid into the coupling groove  385  of the insertion part  383 , and the rear end  382  may be exposed to the outside and be held by the user. An extension shape of the coupling groove  385  may be various, and an indented shape thereof may correspond to the coupling protrusion  396 . 
     In one example, in an embodiment of the present disclosure, the rear end  382  of the detergent valve  380  may have a larger diameter than the insertion portion  383 , and a front face thereof may be supported on the rear face of the detergent reservoir  310 . 
     In the detergent valve  380 , the rear end  382  may have the larger diameter than the insertion portion  383 . That is, the detergent valve  380  may be formed such that the rear end  382  is stepped with respect to the insertion portion  383 , and accordingly, an insertion distance of the detergent valve  380  may be restricted. 
     In addition, because the front face of the rear end  382  is supported on the rear face of the detergent reservoir  310 , a stable fixing structure of the detergent valve  380  may be implemented. 
     In one example, in an embodiment of the present disclosure, the rear end  382  of the detergent valve  380  may have a plurality of grip grooves  384  spaced apart from each other along an outer circumferential direction. The rear end  382  of the detergent valve  380  may be exposed to the outside of the detergent reservoir  310 , and the grip grooves  384  may be defined to be easily gripped by the user. 
     The user may rotate the detergent valve  380  in the forward or the reverse direction by gripping not only the restriction protrusion  381 , but also the rear end  382  itself in which the grip grooves  384  are defined. 
     In one example, in an embodiment of the present disclosure, the coupling groove  385  may include a straight-movement portion  386  and a rotation portion  387 . A front face of a front end of the straight-movement portion  386  may be opened forward, and the straight-movement portion  386  may extend rearward from the front end. The rotation portion  387  may extend in the reverse direction, which is opposite to the forward direction, from a rear end of the straight-movement portion  386 . 
     The detergent valve  380  may be inserted into the valve hole  397  such that the coupling protrusion  396  slides in the straight-movement portion  386 . The coupling protrusion  396  may be rotated in the forward direction so as to slide in the rotation portion  387  to be coupled to the valve hole  397 . 
     A detailed description of the coupling process of the detergent valve  380  based on the shape of the coupling groove  385  as described above is as follows. 
     First,  FIG. 42  illustrates the detergent valve  380  that begins to be inserted into the valve hole  397 . The detergent valve  380  may be inserted into the valve hole  397  in a state in which the straight-movement portion  386  of the coupling groove  385  and the coupling protrusion  396  are aligned to be positioned on a straight line in the front and rear direction X. In this process, the coupling protrusion  396  may slide along the straight-movement portion  386  of the coupling groove  385 . 
     In one example,  FIG. 43  illustrates a state in which the detergent valve  380  in  FIG. 42  is completely inserted into the valve hole  397 . The detergent valve  380  may move straight such that the front face of the rear end  382  is in contact with the rear face of the detergent reservoir  310 , so that the detergent valve  380  may be inserted into the valve hole  397 . In this state, the coupling protrusion  396  may still be positioned in the straight-movement portion  386  of the coupling groove  385 . 
     In one example,  FIG. 44  illustrates a state in which the detergent valve  380  in  FIG. 43  is rotated in the forward direction and is in the closed state. The detergent valve  380  may be rotated in the forward direction in a state in which the detergent valve  380  is completely inserted such that the front face of the rear end  382  is in contact with the rear face of the detergent reservoir  310 . 
     When the detergent valve  380  is rotated in the forward direction, the coupling protrusion  396  may move along the rotation portion  387  from the straight-movement portion  386  of the coupling groove  385 . As the detergent valve  380  is rotated in the forward direction, the coupling protrusion  396  is moved in the reverse direction with respect to the detergent valve  380 , so that the rotation portion  387  may extend in the reverse direction from the straight-movement portion  386 . 
     A length of the rotation portion  387  may correspond to the certain amount of rotation in the forward direction for the detergent valve  380  to be in the closed state. That is, when the detergent valve  380  is rotated in the forward direction and the coupling protrusion  396  is positioned at an end of the rotation portion  387  of the coupling groove  385 , the detergent valve  380  becomes in the closed state and the coupling process is terminated. 
     In one example, in an embodiment of the present disclosure, the straight-movement portion  386  may extend rearward from the front end of the detergent valve  380 , and the opened front face may be positioned on the front face of the detergent valve  380 . 
     Accordingly, when the straight-movement portion  386  and the coupling protrusion  396  are not aligned on the straight line, the detergent valve  380  may be restricted from being inserted into the valve hole  397 , and the user may effectively identify a current alignment state of the detergent valve  380 . 
     For example, when the open front face of the straight-movement portion  386  is spaced rearwardly apart from the front face of the detergent valve  380 , the detergent valve  380  is not able to be inserted further as the coupling protrusion  396  and the coupling groove  385  are not aligned with each other in a state in which the detergent valve  380  is partially inserted into the valve hole  397 . In this case, it may not be easy for the user to identify the alignment state of the coupling protrusion  396  and the coupling groove  385 . 
     Thus, an embodiment of the present disclosure may allow the insertion of the detergent valve  380  to be performed while the user easily identifies the alignment state between the coupling protrusion  396  and the coupling groove  385  with the naked eye from the beginning of the insertion of the detergent valve  380 . 
     In one example, referring to  FIGS. 43 and 44 , in an embodiment of the present disclosure, the forward stopper  391  may be in contact with the restriction protrusion  381  when the coupling protrusion  396  is positioned at the end of the rotation portion  387 . 
     As described above, the contact between the restriction protrusion  381  and the forward stopper  391  may assist in restricting the rotation by the coupling protrusion  396  and the coupling groove  385 . Accordingly, when the coupling protrusion  396  is positioned at the end of the rotation portion  387  in the coupling groove  385 , as the rotation of the restriction protrusion  381  is restricted by the forward stopper  391 , further rotation may be prevented and the damage to the coupling protrusion  396  and the like may be prevented. 
     In one example,  FIG. 45  illustrates the rear end  382  of the detergent valve  380  and the rotation portion  387  of the coupling groove  385  according to an embodiment of the present disclosure. 
     Referring to  FIG. 45 , in an embodiment of the present disclosure, in the rotation portion  387 , an entry portion  388  is defined between the rear end of the straight-movement portion  386  and the end of the rotation portion  387 . The entry portion  388  may be defined to have a smaller width than the end of the rotation portion  387 . 
     The entry portion  388  may be defined in the rotation portion  387 . That is, the entry portion  388  may be defined at a position of the rotation portion  387  connected to the straight-movement portion  386 . In addition, the entry portion  388  may be defined to have a smaller width than the rotation portion  387 . Thus, in a process in which the coupling protrusion  396  passes through the entry portion  388 , a resistance to the movement may be generated. 
     By the entry portion  388 , the user may feel the resistance to the rotation at the beginning of the rotation of the detergent valve  380 , and may recognize that the coupling protrusion  396  has completely entered the rotation portion  387  based on the rotation in the forward direction of the detergent valve  380 . 
     In addition, when the coupling protrusion  396  is positioned at the end of the rotation portion  387 , and when the detergent valve  380  is rotated in the reverse direction due to an unintended cause, the entry portion  388  interferes the movement of the coupling protrusion  396 . Thus, it is possible to prevent the detergent valve  380  from being unintentionally rotated in the reverse direction and being converted into the open state. 
     In one example, referring to  FIG. 45 , a side face of the entry portion  388  may be formed to be inclined such that a width thereof decreases toward the end of the rotation portion  387 . That is, the entry portion  388  may be formed such that a width thereof decreases in a direction away from the straight-movement portion  386 . 
     The side face inclined in the entry portion  388  may be flat or curved. In addition, an end of the entry portion  388  facing the rotation portion  387  may have a stepped shape in which the width discontinuously increases in a relationship with the rotation portion  387 . 
     In an embodiment of the present disclosure, by the entry portion  388  defined such that the side face thereof is inclined, when the detergent valve  380  rotates in the forward direction, the coupling protrusion  396  may be induced to enter the rotation portion  387 . In addition, when the detergent valve  380  is unintentionally rotated in the reverse direction, the movement of the coupling protrusion  396  may be restricted by the entry portion  388 . 
     Referring to  FIGS. 38 and 39  again, an embodiment of the present disclosure may further include a reverse stopper  392 . The reverse stopper  392  may protrude rearward from the rear face of the detergent reservoir  310 , and may be positioned at a position along a reverse path of the restriction protrusion  381  on the rotation path of the restriction protrusion  381 . 
     That is, an embodiment of the present disclosure restricts the amount of the rotation in the forward direction of the detergent valve  380  to be equal to or less than the certain amount through the forward stopper  391 , and at the same time, prevents over-rotation of the detergent valve  380  using the reverse stopper  392  also in the rotation in the reverse direction of the detergent valve  380  for the open state, thereby preventing the damage to the coupling protrusion  396  and the like. 
     In one example, in an embodiment of the present disclosure, when the coupling protrusion  396  is positioned in the straight-movement portion  386 , the restriction protrusion  381  is brought into contact with the reverse stopper  392 , so that the rotation in the reverse direction may be restricted. 
     In the rotation in the reverse direction of the detergent valve  380  to be in the open state from the closed state, the coupling protrusion  396  moves from the end of the rotation portion  387  toward the straight-movement portion  386 . When the coupling protrusion  396  enters the straight-movement portion  386 , the reverse stopper  392  restricts the rotation in the reverse direction of the restriction protrusion  381 , thereby preventing the coupling protrusion  396  from being pressed and damaged by the side face of the straight-movement portion  386 . 
     In one example, in an embodiment of the present disclosure, a closing mark  393  may be imprinted at a position corresponding to the forward stopper  391  and an open mark  394  may be imprinted at a position corresponding to the reverse stopper  392  on the rear face of the detergent reservoir  310 . 
     The closing mark  393  and the open mark  394  may be various. For example, a word representing opening and closing may be imprinted in Korean or English, or a specific shape such as an open lock, a closed lock, and the like may be imprinted as shown in  FIGS. 38 and 39 . A scheme of the imprinting may also be various, such as engraving or embossing. 
     In the state in which the detergent valve  380  is inserted, the forward direction for the closed state of the detergent valve  380  or the reverse direction for the open state may be ambiguous to the user. Accordingly, an embodiment of the present disclosure includes the forward stopper  391  and the reverse stopper  392  that restrict the rotation of the restriction protrusion  381  and imprints the closing mark  393  and the open mark  394  respectively on or around the forward stopper  391  and the reverse stopper  392 , so that it is possible to effectively recognize the forward or reverse direction and the open or closed state resulted therefrom to the user. 
     In one example,  FIG. 46  illustrates an internal cross-section of the detergent valve  380  according to an embodiment of the present disclosure, and  FIG. 47  illustrates a state in which the inlet port  426  of the detergent pump is coupled to the detergent valve  380  according to an embodiment of the present disclosure. 
     Referring to  FIGS. 46 and 47 , in an embodiment of the present disclosure, when the detergent reservoir  310  is retracted into the detergent opening  15 , the detergent valve  380  may be connected to the detergent pump installed inside the cabinet  10 . 
       FIG. 46  is a view illustrating a state before the detergent reservoir  310  is retracted into the detergent opening  15 , and  FIG. 47  is a view illustrating a state in which the detergent reservoir  310  is completely retracted into the detergent opening  15 . 
     The detergent reservoir  310  may slide inside the detergent opening  15  in a state of being coupled to the storage frame  390 , and the inlet port  426  of the detergent pump may be positioned rearward of the detergent opening  15 . 
     The inlet port  426  may be positioned to correspond to the detergent valve  380  in the front and rear direction X. Therefore, as the retraction of the storage  300  is terminated, the inlet port  426  may be connected to the detergent valve  380 . 
     In one example, in an embodiment of the present disclosure, the detergent valve  380  may include a valve housing, a valve head  422 , and an elastic member. 
     A space in which the valve head  422  and the elastic member are arranged may be defined inside the valve housing, and the valve head  422  may be pressed by the elastic member to be in close contact with the valve housing and shield the valve. 
     Specifically, the elastic member may be disposed inside the valve housing to pressurize the valve head  422  rearward. The valve head  422  may be pressed rearward to be in close contact with a valve support face  424  of the valve housing. 
     Referring to  FIG. 46 , the valve support face  424  is disposed to surround a rearward opening of the valve housing. When the valve head  422  is in close contact with the valve support face  424 , as the rearward opening of the valve housing is shielded, the flow of the detergent may be restricted. 
     In one example, as shown in  FIG. 47 , when the detergent reservoir  310  is completely retracted into the detergent opening  15 , the inlet port  426  of the detergent pump forwardly pressurizes the valve head  422 . The valve head  422  pressed by the inlet port  426  is moved forward and spaced apart from the valve support face  424 . Accordingly, a rearward opening of the valve cabinet  10  is opened by a separation space between the valve support face  424  and the valve head  422 . 
     When the rearward opening is opened, the detergent in the detergent reservoir  310  becomes to be in a state capable of moving toward the inlet port  426  of the detergent pump. Based on an operating state of the detergent pump, the detergent in the detergent reservoir  310  may flow toward the detergent pump. 
     Although the present disclosure has been illustrated and described in connection with a specific embodiment, it will be apparent to those of ordinary skill in the art that the present disclosure may be variously improved and changed without departing from the technical idea of the present disclosure provided by the following claims.