Patent Publication Number: US-9833122-B2

Title: Dishwasher having movement parts for the upper basket

Description:
This application claims priority from Korean Patent Application No. 10-2012-0131081 filed on Nov. 19, 2012 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. 
     FIELD 
     The present disclosure relates to dishwasher technology and, for example, to a dishwasher that can adjust a dish reception space of a basket for accommodating dishes. 
     BACKGROUND 
     A dishwasher may be a home appliance that allows food leftovers on the surface of dishes to be washed by wash water sprayed at a high pressure from a spray nozzle. 
     The wash water may include a wash tub defining a space in which dishes are washed and a sump disposed under the wash tub to store wash water. Wash water moves to the spray nozzle by the pumping action of a wash pump mounted in the sump, and wash water moved to the spray nozzle is sprayed at a high pressure through one or more spray holes formed at the end portion of the spray nozzle. Then, wash water sprayed at a high pressure hits the surfaces of dishes, thereby causing food leftovers on dishes to drop to the bottom of the wash tub. 
     In some cases, a dishwasher includes a basket for receiving dishes. Various kinds of dishes may be provided to the basket, and the dishes may have various shapes according to the types of dishes. In these cases, the basket may be designed such that the basket can support various kinds of dishes with different shapes. For instance, various sizes of baskets may be disposed inside the wash tub in multiple layers. 
     SUMMARY 
     In one aspect, a dishwasher includes a wash tub defining a space in which dishes are washed, a lower basket disposed in the wash tub, and a first upper basket disposed over the lower basket inside the wash tub and configured to define a first lower reception space together with the lower basket. The dishwasher also includes a second upper basket disposed over the lower basket side by side with the first upper basket and configured to define a second lower reception space. The dishwasher further includes movement parts configured to move the first upper basket above or below the second upper basket such that the first upper basket occupies a same space over the lower back as the second upper basket, thereby increasing the first lower reception space. 
     Implementations may include one or more of the following features. For example, the movement parts may include a frame configured to receive the first upper basket, an adjustment part disposed on the frame and configured to adjust a height of the first upper basket, and a rail connected to the frame in a manner that enables the frame to move along the rail and to move the first upper basket above or below the second upper basket. In this example, the dishwasher may include a stopping protrusion located on the first upper basket and protruding to a side surface of the frame and the adjustment part may be configured to move in a horizontal direction, and may include a latch that limits vertical movement of the stopping protrusion. Further, in this example, the adjustment part may be rotatably disposed on a side surface of the frame and configured to lift the first upper basket from the frame. 
     In some implementations, the rail may include a first rail, a second rail, a third rail, and a fourth rail longitudinally arranged in left and right directions and sequentially arranged in forward and backward directions in the wash tub and side rails longitudinally disposed in forward and backward directions to connect left ends and right ends of the first to fourth rails, respectively. In these implementations, a front surface and a rear surface of the second upper basket may be mounted to the second rail and the third rail. Further, in these implementations, the dishwasher may include rollers disposed on the side rails and configured to allow the first to fourth rails to move in forward and backward directions in the wash tub. 
     In some examples, the dishwasher may include a guide panel that has a first side surface thereof connected to the frame and a hook that is located at a second side surface of the guide panel and that hooks to the first rail such that the frame moves along the first rail. In these examples, the guide panel may be a first guide panel disposed on a front surface of the frame, the hook may be a first hook, and the dishwasher may include a second guide panel disposed on a rear surface of the frame and a second hook located at the second guide panel and that hooks to the fourth rail such that the frame moves along the fourth rail. 
     In another aspect, a dishwasher includes a wash tub defining a space in which dishes are washed and a first upper basket and a second upper basket disposed side by side at an upper side of the wash tub. The dishwasher also includes a lower basket disposed under the first upper basket and the second upper basket and configured to define lower reception spaces for receiving dishes. The dishwasher further includes a movement member configured to allow the first upper basket to move to a position above or below the second upper basket, thereby increasing a maximum height of the lower reception space. 
     Implementations may include one or more of the following features. For example, the movement member may include a frame configured to receive the first upper basket, an adjustment part disposed on the frame and configured to adjust a height of the first upper basket, and a rail connected to the frame in a manner that enables the frame to move along the rail and to move the first upper basket above or below the second upper basket. In this example, the dishwasher may include a stopping protrusion located on the first upper basket and protruding to a side surface of the frame and the adjustment part may be configured to move in a horizontal direction and may include a latch that limits vertical movement of the stopping protrusion. Further, in this example, the adjustment part may be rotatably disposed on a side surface of the frame and configured to lift the first upper basket from the frame. 
     In some implementations, the rail may include a first rail, a second rail, a third rail, and a fourth rail longitudinally arranged in left and right directions and sequentially arranged in forward and backward directions in the wash tub and side rails longitudinally disposed in forward and backward directions to connect left ends and right ends of the first to fourth rails, respectively. In these implementations, a front surface and a rear surface of the second upper basket are mounted to the second rail and the third rail. 
     In addition, the dishwasher may include rollers disposed on the side rails and configured to allow the first to fourth rails to move in forward and backward directions in the wash tub. Further, the dishwasher may include a guide panel that has a first side surface thereof connected to the frame and a hook that is located at a second side surface of the guide panel and that hooks to the first rail such that the frame moves along the first rail. 
     In yet another aspect, a dishwasher includes a wash tub defining a space in which dishes are washed and a first upper basket and a second upper basket disposed side by side at an upper side of the wash tub. The dishwasher also includes a lower basket disposed under the first upper basket and the second upper basket and configured to receive dishes. The dishwasher further includes movement parts configured to move the first upper basket to a position that overlaps the second upper basket, thereby increasing a maximum height of a dish containable in the lower basket by a height of a dish containable in the first upper basket. 
     Implementations may include one or more of the following features. For example, the movement parts may include a frame configured to receive the first upper basket, an adjustment part disposed on the frame and configured to adjust a height of the first upper basket, and a rail connected to the frame in a manner that enables the frame to move along the rail and to move the first upper basket to the position that overlaps the second upper basket. In this example, the dishwasher may include a stopping protrusion located on the first upper basket and protruding to a side surface of the frame and the adjustment part may be configured to move in a horizontal direction and may include a latch that limits vertical movement of the stopping protrusion. Further, in this example, the adjustment part may be rotatably disposed on a side surface of the frame and configured to lift the first upper basket from the frame. 
     In yet another aspect, a dishwasher includes a wash tub defining a space in which dishes are washed, baskets configured to receive dishes, and a frame disposed inside the wash tub configured to receive the baskets. The dishwasher also includes adjustment parts disposed on the frame and configured to adjust a height of the baskets and a rail configured to allow the frame to move in a horizontal direction inside the wash tub and thus adjust horizontal locations of the baskets. 
     The foregoing and other objects, features, aspects and advantages of the present disclosure will be described in detail in the following detailed description with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the drawings: 
         FIG. 1  is a perspective view illustrating an example dishwasher; 
         FIG. 2  is a perspective view illustrating an example basket and example peripheral parts thereof; 
         FIG. 3  is an exploded perspective view illustrating an example basket and example peripheral parts thereof; 
         FIG. 4  is a perspective view illustrating an example latch; 
         FIGS. 5A and 5B  are views illustrating an example operation relationship between an example adjustment part and an example basket; 
         FIG. 6  is a perspective view illustrating an example guide panel; 
         FIG. 7  is a perspective view illustrating an example basket including an example rotatable adjustment part; 
         FIG. 8  is an exploded perspective view illustrating an example basket and example peripheral parts thereof; 
         FIGS. 9A and 9B  are perspective views illustrating example rotatable adjustment parts; 
         FIG. 10  is a view illustrating an example operation relationship between an example adjustment part and an example basket; 
         FIG. 11  is a view illustrating an example operation relationship between an example adjustment part and an example holder; 
         FIG. 12  is an exploded perspective view illustrating an example movement part and example peripheral parts thereof; 
         FIG. 13  is a view illustrating an example space adjusting method of an example dishwasher; 
         FIG. 14  is a perspective view illustrating an example basket including an example movement part and example peripheral parts thereof; 
         FIG. 15  is a perspective view illustrating an example basket including an example movement part and example peripheral parts thereof; 
         FIGS. 16A and 16B  are views illustrating an example use of an example dishwasher; 
         FIGS. 17A and 17B  are views illustrating another example use of an example dishwasher; 
         FIGS. 18A and 18B  are views illustrating still another example use of an example dishwasher; 
         FIGS. 19A and 19B  are views illustrating yet another example use of an example dishwasher. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  illustrates an example dishwasher.  FIG. 2  illustrates an example basket and example peripheral parts thereof.  FIG. 3  illustrates an example basket and example peripheral parts thereof. 
     Referring to  FIGS. 1 to 3 , a dishwasher  1  may include a wash tub  4  defining a space in which dishes are washed, a basket  100  receiving dishes, a frame  120  disposed inside the wash tub  4  to receive the basket  100 , a stopping protrusion  105  formed on an outer side surface of the basket  100 , and an adjustment part  130  disposed on a side surface of the frame  120  facing the stopping protrusion  105  to adjust the height of at least one side of the basket  100 . The adjustment part  130  may include a latch  131  movably disposed in a horizontal direction to limit vertical movement of the stopping protrusion  105 . 
     A cabinet  3  may provide a frame that defines the exterior of the dishwasher  1  and receives parts of the dishwasher  1 . The cabinet  3  may have the front surface opened, and may allow a user to put dishes into the cabinet  3  through the front surface. The wash tub  4  may be disposed inside the cabinet  3 . 
     A door  2  may be pivotably coupled to one surface of the cabinet  3 . In some implementations, the door  2  may be pivotably coupled to the lower end of the cabinet  3 . The door  2  may seal the wash tub  4 . 
     Wash water may be sprayed into the wash tub  4 . Dishes may be contained in the wash tub  4 . The wash tub  4  may be opened/closed by the door  2 . The wash tub  4  may be sealed by the door  2 . The basket  100  receiving dishes may be disposed inside the wash tub  4 . 
     A nozzle may be disposed inside the wash tub  4  to spray wash water to dishes. A plurality of nozzles may be used. The nozzles may be disposed at upper and lower portions of the wash tub  4  to evenly spray wash water to dishes. 
     Upper and lower flow pipes may be provided inside the wash tub  4  such that wash water collected in a sump is supplied to upper and lower nozzles disposed in the wash tub  4 . 
     A water supply pipe may be provided in the wash tub  4  to be connected to an external water source, allowing water to be supplied into the wash tub  4 . Also, a water discharge pipe may be provided in the wash tub  4  such that contaminated wash water is discharged out of the dishwasher  1 . 
     A drain pump may be provided to the water discharge pipe such that wash water collected in the sump is discharged out of the dishwasher  1 . A supply pipe may be provided at a lower portion of the wash tub  4  to supply wash water collected in the sump to wash tub  4 , and a wash pump may be provided to the supply pipe to supply water to the upper and lower nozzles. 
     A fan assembly, an exhaust duct, and a nozzle may be provided inside the door  2 . The fan assembly may suction air inside the wash tub  4  and then discharge air out of the wash tub  4 . The exhaust duct may discharge air suctioned from the inside of the wash tub  4  by the fan assembly to the outside. The nozzle may be coupled to one side of the exhaust duct to discharge air suctioned by the fan assembly to the outside. 
     The basket  100  may hold dishes. The basket  100  may be disposed in plurality such that a plurality of baskets are included in the dishwasher  1 . The basket  100  may be disposed to be movable forward and backward. The basket  100  may be held in the frame  120 . The basket  100  may be supported by the frame  120 . The frame  120  supporting the basket  100  may be disposed to be movable forward and backward in the wash tub  4 . The stopping protrusion  105  may be formed on the outer side surface of the basket  100 . The basket  100  may be formed of wire or synthetic resin and may have a lattice shape. 
     In some examples, the frame  120  may hold the basket  100 . The frame  120  may be formed of various materials such as plastics, synthetic resin, and wire. The frame  120  may be disposed inside the wash tub  4 . The frame  120  may be disposed to be movable forward and backward in the wash tub  4 . 
     The adjustment part  130  may be disposed on the frame  120  to adjust the height of at least one end of the basket  100 . The adjustment part  130  may be disposed on a surface of the frame  120  that faces a portion where the stopping protrusion  105  is formed. 
     The adjustment part  130  may adjust the height of at least one side of the basket  100 . The adjustment part  130  may adjust the height of the basket  100 . The adjustment part  130  may move the basket  100  in a vertical direction. The adjustment part  130  may limit the vertical movement of the basket  100 . 
       FIG. 4  illustrates an example latch.  FIG. 5  illustrates an example operation relationship between an example adjustment part and an example basket. 
     Referring to  FIGS. 4 and 5 , the adjustment part  130  may include a latch  131  that is disposed to be movable in a horizontal direction. The adjustment part  130  may include the latch  131  that limits the vertical movement of the stopping protrusion  105 . The adjustment part  130  may adjust the height of the stopping protrusion  105 . The adjustment part  130  may limit the vertical movement of the stopping protrusion  105 . 
     The adjustment part  130  may include the latch  131  that intersects with the movement path of the stopping protrusion  105  and thus interferes with the stopping protrusion  105  when the basket  100  moves upward and downward. The latch  131  may limit the vertical movement of the stopping protrusion  105 . The latch  131  may be disposed on the frame  120  so as to be movable in a horizontal direction. The latch  131  may adjust the height of the stopping protrusion  105 . The latch  131  may limit the vertical movement of the basket  100 . The latch  131  may adjust the height of the basket  100 . The latch  131  may adjust the height of one side of the basket  100 . 
     In some implementations, the latch  131  may be disposed to cross the movement path of the stopping protrusion  105  and, thus, when at least one side of the basket  100  moves upward and downward, the stopping protrusion  105  may be stopped by the latch  131 . 
     For example, the latch  131  may move in a horizontal direction and the stopping protrusion  105  may move in a vertical direction, allowing the latch  131  and the stopping protrusion  105  to limit a movement path of each other. The latch  131  may be disposed on the movement path of the stopping protrusion  105 . 
     In some examples, the latch  131  may be horizontally disposed in pairs such that the adjustment part  130  includes two latches. When an interval between the latches  131  increases, the pair of latches  131  may cross the movement path of the stopping protrusion  105 . 
     The stopping protrusion  105  may be disposed in pairs such that the adjustment part  130  includes two stopping protrusions. The multiple stopping protrusions may be disposed side by side at left and right sides, and the latch  131  may be disposed between the stopping protrusions  105 . 
     When the interval between the latches  131  narrows, the latch  131  may deviate from the movement path of the stopping protrusion  105 . When the interval between the latches  131  narrows, the stopping protrusion  105  may freely move upward and downward. When the interval between the latches  131  increases, the latches  131  may be disposed on the movement path of the stopping protrusion  105 . When the interval between the latches  131  increases, the movement of the stopping protrusion  105  may be limited by the latch  131 . The movement paths of the latch  131  and the stopping protrusion  105  may cross each other. The movement paths of the latch  131  and the stopping protrusion  105  may be orthogonal to each other. 
     The latches  131  may be disposed in pair at left and right sides. The pair of latches  131  may be horizontally disposed. The interval between the pair of latches  131  may vary. The movement of the stopping protrusion  105  may be dependent on the interval between latches  131 . 
     In some implementations, an elastic member  133  may be disposed between the latches  131 . The elastic member  133  may be a spring. The elastic member  133  may increase the interval between the latches  131 . The elastic member  133  may allow the latches  131  to be disposed on the movement path of the stopping protrusion  105 . A protrusion may be formed on sides of the latches that are opposite to each other such that springs can be inserted into the protrusion. 
     The adjustment part  130  may further include the elastic member  133  that applies an elastic force to the latch  131  in a direction of the movement path of the stopping protrusion  105 . 
     In some examples, the latch  131  may have an inclination surface on a contact surface with the stopping protrusion  105  at a lower side surface of the latch  131  and, thus, may be pushed when the stopping protrusion  105  moves upward, allowing the interval between the latches  131  to be narrowed. 
     In some implementations, the latch  131  may have an inclination surface on a contact surface with the stopping protrusion  105 , and thus may move away from the stopping protrusion  105  when the stopping protrusion  105  moves upward. The latch  131  may contact the stopping protrusion  105 . The stopping protrusion  105  may contact the lower end of the latch  131  when the stopping protrusion  105  moves upward. The inclination surface may be formed on a surface where the latch  131  is located on the movement path of the stopping protrusion  105 . The inclination surface may be formed on a lower side of the latch  131 . 
       FIG. 5A  illustrates a direction of a force (Fx 1 ) which the stopping protrusion  105  applies to the latch  131  when the stopping protrusion  105  moves upward by a force (Fy 1 ). 
     Referring to  FIG. 5A , the inclination surface may change the direction of the force that the stopping protrusion  105  applies to the latch  131 . The stopping protrusion  105  may apply a force to the latch  131  in a horizontal direction when the stopping protrusion  105  moves upward. When the stopping protrusion  105  moves upward, the latch  131  may move in a horizontal direction. 
     When the stopping protrusion  105  is disposed in plurality, the latches  131  disposed in pair may move in a horizontal direction. The interval between the latches  131  may be narrowed. The latches  131  may move out of the movement path of the stopping protrusion  105 . 
     In some examples, an upper surface of the stopping protrusion  105  contacting the latch  131  may be formed to incline and, thus, the interval between the latches  131  may be allowed to be narrowed when the stopping protrusion  105  moves upward. 
     The inclination surface may be formed on the upper side of the stopping protrusion  105 . The inclination surface formed at the stopping protrusion  105  and the inclination surface formed at the latch  131  may correspond to each other. When the basket  100  moves upward, the stopping protrusion  105  may push the latch  131  in a horizontal direction. The latch  131  may be moved in a horizontal direction by the stopping protrusion  105 . The interval between the latches  131  may be narrowed. The latches  131  may move out of the movement path of the stopping protrusion  105 . 
       FIG. 5B  illustrates the direction of a force (Fx 2 ) applied to the latch when a button is pushed by a force (Fy 2 ). 
     Referring to  FIG. 5B , the dishwasher  1  may further include a button  140  disposed between the latches  131  and allowing the interval between the latches  131  to be narrowed when pushed. A pushing part  141  may be formed at both ends of the lower side of the button  140  to downwardly protrude. An insertion part  135  (see also  FIG. 4 ) may be formed in the latch  131  such that the pushing part  141  can be inserted in a vertical direction. 
     The latch  131  may be disposed in plurality, and the elastic member  133  may be disposed between the latches  131  to adjust the interval between the latches  131 . Also, the button  140  may be further provided to be restored by the elastic member  133 . 
     The button  140  may be disposed between the latches  131 . The button  140  may be disposed over a location where the latches  131  face each other. The button  140  may adjust the interval between the latches  131 . When the button  140  is pushed, the interval between the latches  131  may be narrowed. When the interval between the latches  131  is narrowed, the button  140  may move downward. The upper portion of the button  140  may be formed to be substantially flat. The upper portion of the button  140  may be formed to be concave such that the button  140  can be easily pushed by the hand. 
     In some implementations, the adjustment part  130  may further include a button  140  for adjusting the horizontal movement of the latch  131  by moving upward and downward. A pushing part  141  may be formed at the button  140  to downwardly protrude. An insertion part  135  may be formed in the latch  131  such that the pushing part  141  is inserted in a vertical direction. At least one of the pushing part  141  and the insertion part  135  may have inclination surfaces on surfaces facing each other. The latch  131  may move away from the stopping protrusion  105  when the pushing part  141  moves downward. The pushing part  141  may be formed at both ends of the lower side of the button  140  to downwardly protrude. The pushing part  141  may be disposed at both left and right ends of the button  140 . The pushing part  141  may be longitudinally formed in a vertical direction. The insertion part  135  may be formed in the latch  131  such that the pushing part  141  can be inserted into the insertion part  135  in a vertical direction. The pushing part  141  may be a groove formed in a vertical direction. The pushing part  141  may be formed such that the insertion part  135  can move upward and downward. When the pushing part  141  moves upward, the insertion part  135  may move in a horizontal direction. When the insertion part  135  moves in a horizontal direction, the pushing part  141  may move in a vertical direction. 
     In some examples, an inclination surface may be formed on surfaces where the pushing parts  141  face each other, and an inclination surface may be formed on the insertion part  135  to correspond to the inclination surface formed on the pushing part  141 . In this case, when the pushing part  141  moves, the latch  131  may be pushed in a direction orthogonal to the movement direction of the pushing part  141 , allowing the interval between the latches  131  to be narrowed. 
     The pushing part  141  may be longitudinally and downwardly formed at both left and right sides of the button  140 . The pushing part  141  may have inclination surfaces where the pushing parts  141  face each other. The inclination surface on the pushing part  141  may be formed to direct force toward the central line of the button  140 . The inclination surface may change the direction of force applied to the button  140 . 
     The lower end of the pushing part  141  may protrude so as to be always inserted into the insertion part  135 . The inclination surface of the pushing part  141  may be formed to be increasingly closer to the center of the button  140  from the lower side to the upper side thereof. The pushing part  141  may have an increasingly larger thickness from the lower side to the upper side thereof. 
     An inclination surface may be formed on the insertion part  135 . The inclination surface formed at the insertion part  135  may correspond to the inclination surface formed at the pushing part  141 . A force applied to the button  140  may move the latch  131  in a horizontal direction due to the inclination surfaces formed on the insertion part  135  and the pushing part  141 . When the button  140  is pushed, the interval between the latches  131  may be narrowed. 
       FIG. 6  illustrates an example guide panel  150 . 
     Referring to  FIG. 6 , the dishwasher  1  may further include a guide panel  150  that includes: a support panel  151 ; a mounting part  153  disposed in plurality on one side surface such that the support panel  151  is mounted to the frame  120 ; and a guide clamp  155  for guiding the latch  131  and the button  140  such that the latches  131  move in a horizontal direction and the button  140  moves in a vertical direction. 
     The dishwasher  1  may include the guide panel  150 . The guide panel  150  may be mounted to the frame  120 . The guide panel  150  may include the support panel  151 . The support panel  151  may be mounted to the frame  120 . The mounting part  153  may be formed on one side surface of the support panel  151 . The mounting part  153  may couple the support panel  151  to the frame  120 . The mounting part  153  may detachably couple the support panel  151  to the frame  120 . The mounting part  153  may be disposed in plurality. 
     The guide panel  150  may include the guide clamp  155 . The guide clamp  155  may be disposed on the support panel  151  and may include multiple guide clamps. The guide clamps  155  may fix the latch  131  such that the latch  131  moves in a horizontal direction. The guide clamps  155  may fix the button  140  such that the button  140  moves in a vertical direction. The guide clamps  155  may maintain a minimum height of the button  140 . The guide clamps  155  may surround the center of the latch  131 . The guide clamps  155  may interrupt the vertical movement of the latch  131 . The guide clamps  155  may surround the side surface of the button  140 , and may interrupt the horizontal movement of the button  140 . The adjustment part  130  may have a vertical movement groove  157  for guiding the vertical movement of the stopping protrusion  105 . The guide panel  150  may have the vertical movement groove  157  formed in a vertical direction such that the stopping protrusion  105  can be inserted into the guide panel  150  to be movable in a vertical direction. The vertical movement groove  157  may be formed in the guide panel  150 . The guide panel  150  may include multiple vertical movement grooves  157  that are located at left and right sides of a surface of the guide panel  157  and extend in a vertical direction. The vertical movement groove  157  may be formed on the movement path of the stopping protrusion  105 . The vertical movement groove  157  may guide the movement direction of the stopping protrusion  105 . The vertical movement groove  157  may be formed such that the stopping protrusion  105  can move in a vertical direction within the groove. The stopping protrusion  105  may be inserted into the vertical movement groove  157 . The stopping protrusion  105  may include a guide protrusion that corresponds to the vertical movement groove  157 . The guide protrusion may be inserted into the vertical movement groove  157 . 
     In some implementations, the stopping protrusion  105  may be disposed in pairs on the front surface and the rear surface of the basket  100 , respectively. The stopping protrusion  105  may be disposed in pairs, and the button  140  may be disposed between the stopping protrusions  105  so as to be movable in a vertical direction. The adjustment part  130  may be disposed on the front surface and the rear surface of the frame  120 , respectively. The guide panel  150  may be disposed on the front surface and the rear surface of the frame  120 , respectively. A hook  159  may be formed on the guide panel  150 . In some examples, the stopping protrusion  105  may be disposed at both surfaces of the basket  100 , and the adjustment part  130  may be disposed at a portion facing the stopping protrusion  105  to obliquely fix the basket  100 . 
     The adjustment part  130  may be disposed on the frame  120  to adjust a dish reception space of the basket  100  by allowing the upward movement of the basket  100  and limiting the downward movement of the basket  100 .  FIG. 7  illustrates an example basket  200  including rotatable adjustment parts  230  and  270 .  FIG. 8  illustrates the basket  200  and example peripheral parts thereof.  FIG. 9  illustrates the rotatable adjustment parts  230  and  270 .  FIG. 10  illustrates an example operation relationship between the adjustment parts  230  and  270  and the basket  200 . 
     Referring to  FIGS. 1 and 7 to 10 , a dishwasher  1  may include a wash tub  4  defining a space in which dishes are washed, a basket  200  receiving dishes, a frame  220  disposed inside the wash tub  4  to receive the basket  200 , and adjustment parts  230  and  270  rotatably disposed on the side surface of the frame  220  to lift at least one end of the basket  200  from the frame  220 . 
     The adjustment parts  230  and  270  may rotate in linkage with the vertical movement of the basket  200 . In addition, the adjustment parts  230  and  270  may be curved to support the basket  200 , and may adjust the height of at least one side of the basket  200  according to the degree of rotation. 
     Wash water may be sprayed into the wash tub  4 . Dishes may be contained in the wash tub  4 . The wash tub  4  may be opened/closed by the door  2 . The wash tub  4  may be sealed by the door  2 . The basket  200  receiving dishes may be disposed inside the wash tub  4 . 
     The basket  200  may hold dishes. The basket  200  may be disposed in plurality such that multiple baskets are included in the dishwasher  1 . The basket  200  may be disposed to be movable forward and backward. The basket  200  may be held in the frame  220 . The basket  200  may be supported by the frame  220 . The frame  220  supporting the basket  200  may be disposed to be movable forward and backward in the wash tub  4 . The basket  200  may be formed of wire or synthetic resin and may have a lattice shape. 
     The frame  220  may hold the basket  200 . The frame  220  may be formed of various materials, such as synthetic resin and wire. The frame  220  may be disposed inside the wash tub  4 . The frame  220  may be disposed to be movable forward and backward in the wash tub  4 . 
     The adjustment parts  230  and  270  may adjust the height of at least one side of the basket  200 . The adjustment parts  230  and  270  may adjust the height of the basket  200 . The adjustment parts  230  and  270  may move the basket  200  in a vertical direction. The adjustment parts  230  and  270  may limit the vertical movement of the basket  200 . 
     The adjustment parts  230  and  270  may be rotatably disposed on the side surface of the frame  220 . The adjustment parts  230  and  270  may lift at least one end of the basket  200  from the frame  220 . The adjustment parts  230  and  270  may adjust the height of at least one end of the basket  200 . 
     In some implementations, the adjustment parts  230  and  270  may be disposed in plurality to adjust the heights of the front and rear sides of the basket  200 . The adjustment parts  230  and  270  may be disposed so as to lift the bottom of the front side and the bottom of the rear side of the basket  200 . 
     Support parts  231  and  271  and connection parts  233  and  273  may be formed to have a substantially U-shape such that the support parts  231  and  271  support the undersurface of the basket  200  and the connection parts  233  and  273  extend toward the top of the side surface of the basket  200 . In some examples, the adjustment parts  230  and  270  may include support parts  231  and  271  disposed to support the undersurface of the basket  200 , rotation protrusions  235  and  275  spaced from the support parts  231  and  271  such that the support parts  231  and  271  have a certain rotation radius and are rotatably mounted in the frame  220 , and connection parts  233  and  273  connecting between the rotation protrusions  235  and  275  and the support parts  231  and  271 . 
     The support parts  231  and  271  may support the bottom of the basket  200 . The support parts  231  and  271  may be formed of wire. The support parts  231  and  271  may extend from the bottom of one side surface to the bottom of the other side surface of the basket  200 . The support parts  231  and  271  may be disposed to be orthogonal to the movement direction of the basket  200 . 
     The rotation protrusions  235  and  275  may be rotatably disposed on the frame  220 . The rotation protrusions  235  and  275  may be disposed to have a certain radius of rotation with respect to the support parts  231  and  271 . The rotation protrusions  235  and  275  may be disposed spaced from the support parts  231  and  271  by a certain distance. The rotation axes of the rotation protrusions  235  and  275  may be disposed parallel to support parts  231  and  271 . The rotation axes of the rotation protrusions  235  and  275  may be disposed spaced from support parts  231  and  271  by a certain distance. 
     The rotation protrusions  235  and  275  may be connected to the connection parts  233  and  273 . The support parts  231  and  271  may be connected to the connection parts  233  and  273 . In some implementations, the rotation protrusions  235  and  275  and the connection parts  233  and  273  may be disposed at left and right sides of the frame  220  to support both side surfaces of the support parts  231  and  271 . The rotation protrusions  235  and  275  may be disposed at the left and right side surfaces of the frame  220 , respectively. The connection parts  233  and  273  may be connected to the rotation protrusions  235  and  275 . The connection parts  233  and  273  may be connected to the support parts  231  and  271 . The connection parts  233  and  273  may be disposed parallel to the side walls of the frame  220 . The connection parts  233  and  273  may be disposed parallel to the side walls of the basket  200 . The connection parts  233  and  273  may be disposed to be orthogonal to the rotation axes of the rotation protrusions  235  and  275 . The connection parts  233  and  273  may be orthogonally connected to the support parts  231  and  271 . The rotation protrusions  235  and  275  may be formed at the ends of the connection parts  233  and  273 . The connection parts  233  and  273  may have a straight-line shape. The connection parts  233  and  273  may be bent at a certain angle. The bending angle of the connection parts  233  and  273  may vary with the height of the basket  200  and the locations of levers  237  and  277 , described in more detail below. 
     The dishwasher  1  may further include an adjustment part support  260  that is mounted to the frame  220  and has a rotation hole  261   a  which the rotation protrusions  235  and  275  are inserted into. 
     The adjustment part support  260  may have the rotation hole  261   a . The rotation protrusions  235  and  275  may be inserted into the rotation hole  261   a  formed in the adjustment part support  260 . The adjustment part support  260  may be mounted to the frame  220 . The adjustment part support  260  may be detachably mounted in the frame  220 . The adjustment part support  260  may have a groove corresponding to the frame  220  to be mounted to the frame  220 . The adjustment part support  260  may also be formed of synthetic resin by injection-molding. The adjustment part support  260  may be mounted on both side surfaces of the frame  220 . 
     For example, the center of the adjustment part support  260  may downwardly protrude, and the frame may be formed in a structure corresponding thereto, interrupting the forward and backward movement of the adjustment part support  260 . The lower side of the adjustment part support  260  may be opened to receive the frame  220 . A rotation hole  261   a  may be formed at the center of the adjustment part support  260 . 
       FIG. 11  illustrates an example operation relationship between the adjustment parts  230  and  270  and a holder  240 . 
     Referring to  FIG. 11 , the dishwasher  1  may further include levers  237  and  277  that extend from the ends of the connection parts  233  and  273  and adjust the rotation degree of the support parts  231  and  271 . 
     The levers  237  and  277  may be disposed perpendicular to the rotation axis. The levers  237  and  277  may extend from the ends of the connection parts  233  and  273 . The levers  237  and  277  may have a bent shape at a certain angle with respect to the connection parts  233  and  273 . The ends of the levers  237  and  277  may be always disposed at a higher location than the frame  220 . The levers  237  and  277  may be connected to the rotation protrusions  235  and  275 . The levers  237  and  277  may be connected to the connection parts  233  and  273 . The levers  237  and  277  may adjust the rotation degree of the support parts  231  and  271 . The levers  237  and  277  may be disposed on the right side surface of the basket  200 . 
     In some examples, the levers  237  and  277  may be bent at a certain angle with respect to the connection parts  233  and  273 , allowing the levers  237  and  277  to pivot via the vertical direction of the rotation protrusions  235  and  275  when the basket  200  moves upward and downward. 
     The levers  237  and  277  may be bent at a certain angle with respect to the connection parts  233  and  273 . The levers  237  and  277  may pivot in forward and backward directions of the connection protrusions. When the levers  237  and  277  pivot, the basket  200  may move upward and downward. 
     In some implementations, the dishwasher  1  may further include a holder  240  that is disposed at the side wall of the frame  220  such that the levers  237  and  277  can be stopped and fixed by the holder  240 . In these implementations, the holder  240  may include a holder support part  241  mounted in the frame  220 , a stopping part  243  extending from the holder support part  241  to guide the rotation of the levers  237  and  277 , and a curved part  245  formed at the end portion of the stopping part  243  to allow the levers  237  and  277  to be stopped and fixed thereby. 
     The holder  240  may be disposed on the side wall of the frame  220 . The holder  240  may limit the movement range of the levers  237  and  277 . The holder  240  may fix the levers  237  and  277 . The holder  240  may be disposed at one side of the frame  220  on which the levers  237  and  277  are disposed. The holder  240  may be disposed in plurality at one side of the frame  220  in forward and backward directions. The holder  240  may be formed of synthetic resin by injection-molding. 
     In some examples, the holder  240  may include a holder support part  241  mounted to the frame  220 , a stopping part  243  having one side connected to the holder support part  241  and the other side extending in the rotation direction of the levers  237  and  277  as they upwardly move the basket  200 , and a curved part  245  formed at the end of the other side of the stopping part  243  and downwardly and convexly curved to allow the levers  237  and  277  to be stopped and fixed thereby. 
     The holder support part  241  may be mounted to the frame  220 . The holder support part  241  may have a panel shape disposed on the side wall of the frame  220 . The holder support part  241  may be detachably mounted in the frame  220 . The holder support part  241  may be disposed at the top of the adjustment part support  260 . The holder support part  241  may be disposed on the movement path of the levers  237  and  277 . 
     One side of the stopping part  243  may be connected to the holder support part  241 . The other side of the stopping part  243  may extend in the rotation direction of the levers  237  and  277  as they upwardly move the basket  200 . The other side of the stopping part  243  may extend to the front side of the basket  200 . The other side of the stopping part  243  may extend toward the door  2 . 
     The curved part  245  may be formed on the end of the other side of the stopping part  243 . The curved part  245  may have a downwardly and convexly curved shape to allow the lever to be stopped and fixed thereby. The curved part  245  may have a curved shape in a direction of the rotation axis of the levers  237  and  277 . 
     In some implementations, the levers  237  and  277  may be formed to be bent so as to be inserted into the curved part  245  through the side surface of the curved part  245 . The levers  237  and  277  may be formed to be bent in a direction of the curved part  245  at a surface where the levers  237  and  277  contact the curved part  245 . 
     The levers  237  and  277  may be bent in a direction of the other side surface at the side surface of the curved part  245 . The levers  237  and  277  curved to the other side surface may be curved in a direction opposite to the rotation axis. 
     In other implementations, the levers  237  and  277  may include mounting protrusions that protrude from the side surface thereof and are inserted into the curved part  245 . The mounting protrusions may protrude from the side surfaces of the levers  237  and  277 . The mounting protrusion may be inserted into the curved part  245 . 
     In some examples, the upper end of the curved part  245  that is opened may have a protruding step to interrupt the restoration of the levers  237  and  277 . The levers  237  and  277  may be bent to be inserted into the curved part  245 , and the curved part  245  may include the protrusion step by which the levers  237  and  277  are stopped. The protrusion step may protrude toward the rotation direction of the levers  237  and  277  that lift the basket  100 . 
     In other examples, the curved part  245  may be formed to have a hook shape, allowing the levers  237  and  277  to be hooked. The levers  237  and  277  may be mounted in the curved part  245  having a hook shape. The levers  237  and  277  may be inserted into and mounted in an opened surface of the curved part  245 . 
     In some implementations, the dishwasher  1  may further include a release part  247  that extends from the curved part  245  such that the levers  237  and  277  are released from the curved part  245  by downwardly moving the curved part  245 . 
     In some examples, the holder  240  may further include a release part  247  that extends from the curved part  245  such that the levers  237  and  277  are released from the curved part  245  by downwardly moving the curved part  245 . The release part  247  may be connected to the curved part  245 . The release part  247  may extend from the curved part  245  and may extend in the opposite direction of the mounting part. The release part  247  may be disposed parallel to the basket  200 . The release part  247  may extend toward the rotation direction of the levers  237  and  277 . The release part  247  may be formed of an elastic material. 
     The stopping part  243  may be upwardly bent. The stopping part  243  may be formed of an elastic material. The stopping part  243  may guide the movement of the levers  237  and  277 . The stopping part  243  may be formed to be bent at the same curvature as the movement path of the levers  237  and  277 . 
     In some implementations, the holder  240  may further include a limit part  249  that is disposed in the rotation direction of the levers  237  and  277  as they downwardly move the basket  200  and is connected to the holder support part  241  to limit the rotation of the levers  237  and  277 . In some examples, the dishwasher  1  may further include a limit part  249  that is formed at the holder support part  241  and is disposed in the rotation direction of the levers  237  and  277  to limit the rotation of the levers  237  and  277  when the basket  200  moves downward. 
     The limit part  249  may be disposed at the opposite side to the curved part  245 . The limit part  249  may be disposed at a location where the levers  237  and  277  can interrupt the downward movement of the basket  200 . The limit part  249  may be formed to allow the levers  237  and  277  to be stopped and fixed. For example, the limit part  249  may be a protrusion located on the movement path of the levers  237  and  277 . 
     The holder support part  241 , the stopping part  243 , the curved part  245 , the release part  247 , and the limit part  249  may be integrally formed. The holder  240  may be integrally formed. The holder  240  may be formed of synthetic resin by injection-molding. 
     In some implementations, the dishwasher  1  may further include a guide panel  250 . The guide panel  250  may be mounted at the front and rear sides of the frame  220 . A mounting part may be disposed on one surface of the guide panel  250  such that the guide panel  250  can be mounted to the frame  220 . The mounting part may fix the guide panel  250  to the frame  220 . A hook may be formed on the guide panel  250 . 
       FIG. 12  illustrates example movement parts  321  and  323  and example peripheral parts thereof. 
     Referring to  FIG. 12 , the holder  240  and the frame  220  may be integrally formed, and the frame  220  may have a rotation hole  261   b  which the rotation protrusions  235  and  275  are inserted into. 
     In some examples, the basket  200  may be supported by an integral frame  280  and, in the integral frame  280 , the adjustment parts  230  and  270  may be rotatably disposed to adjust the height of the basket  200 . The integral frame  280  may include all of the holder  240 , the frame  220 , the adjustment part support  260 , and the guide panel  250 . The integral frame  280  may be integrally formed of synthetic resin by injection-molding. 
       FIG. 13  illustrates an example space adjusting method of a dishwasher  1 . 
     Referring to  FIG. 13 , the dishwasher  1  may include a wash tub  4  defining a space in which dishes are washed, a lower basket  300  disposed in the wash tub  4 , a first upper basket  311  disposed over the lower basket  300  inside the wash tub  4  to define a first lower reception space S1 together with the lower basket  300 , a second upper basket  312  disposed over the lower basket  300  side by side with the first upper basket  311  to define a second lower reception space S2, and movement parts  321  and  323  (see  FIGS. 14 and 15 ) that move the first upper basket  311  to the second upper basket  312  to increase the first lower reception space S1. 
     Wash water may be sprayed into the wash tub  4 . Dishes may be contained in the wash tub  4 . The wash tub  4  may be opened/closed by the door  2 . The wash tub  4  may be sealed by the door  2 . The baskets  300 ,  311 , and  312  receiving dishes may be disposed inside the wash tub  4 . 
     The baskets  300 ,  311 , and  312  may hold dishes. The baskets  300 ,  311 , and  312  may be disposed in plurality. The baskets  300 ,  311 , and  312  may be disposed to be movable forward and backward. The baskets  300 ,  311 , and  312  may be formed of wire or synthetic resin and may have a lattice shape. 
     The frame  320  (see  FIGS. 14 and 15 ) may hold the basket. The frame  320  may be formed of various materials, such as synthetic resin and wire. The frame  320  may be disposed inside the wash tub  4 . The frame  320  may be disposed to be movable forward or backward in the wash tub  4 . 
     The baskets  300 ,  311 , and  312  may be separately disposed at upper and lower portions of the wash tub  4 . The lower basket  300  may be disposed at the lower portion of the wash tub  4 . The upper baskets  311  and  312  may be disposed over the lower basket  300 . The dish reception capacity of the lower basket  300  may be different from those of the upper baskets  311  and  312 . The dish reception capacity may vary with the areas of the bottoms of the baskets  300 ,  311 , and  312 . The dish reception capacity may vary with a distance from the bottoms of the baskets  300 ,  311 , and  312  to obstacles located on the baskets  300 ,  311 , and  312 . Here, obstacles may include other baskets  300 ,  311 , and  312 . Here, obstacles may be a distance from the top of the wash tub  4 . The dish reception capacity may increase or decrease according to the dish reception space. 
     The dish reception space may refer to a gap from the bottoms of the baskets  300 ,  311 , and  312  to obstacles located on the baskets  300 ,  311 , and  312 . The dish reception space may vary with the locations and sizes of the baskets  300 ,  311 , and  312  that are disposed. 
     The first upper basket  311  may be disposed inside the wash tub  4 . The first upper basket  311  may be disposed at an upper side of the wash tub  4 . The first upper basket  311  may limit the dish reception space of the lower basket  300 . The first upper basket  311  may limit the dish reception capacity of the lower basket  300 . The first lower reception space S1 may be formed between the first upper basket  311  and the lower basket  300 . The first lower reception space S1 may determine the size, shape, and height of a dish that can be contained in the lower basket  300 . The first lower reception space S1 may vary with the location of the first upper basket  311 . 
     The second upper basket  312  may be disposed inside the wash tub  4 . The second upper basket  312  may be disposed side by side with the first upper basket  311 . The second upper basket  312  may limit the dish reception space of the lower basket  300 . The second upper basket  312  may limit the dish reception capacity of the lower basket  300 . The second lower reception space S2 may be formed between the second upper basket  312  and the lower basket  300 . The second lower reception space S2 may determine the size, shape, and height of a dish that can be contained in the lower basket  300 . The second lower reception space S2 may vary with the location of the second upper basket  312 . 
     The lower basket  300  may be divided into a first lower basket  300  and a second lower basket  300  that are disposed side by side at left and right sides. However, for convenience of explanation, the lower basket  300  will be explained as being integrally formed. 
     The entire bottom of the lower basket  300  may be divided into a first lower bottom located under the first upper basket  311  and a second lower bottom located under the second upper basket  312 . The first lower bottom and the second lower bottom may form the entire bottom of the lower basket  300 . The first lower bottom may become the bottom of the first lower reception space S1. The second lower bottom may become the bottom of the second lower reception space S2. 
     When the first upper basket  311  and the second upper basket  312  are disposed side by side, a space S3 may be formed over the first lower reception space S1. The space S3 may be a space between the bottom of the first upper basket  311  and the ceiling of the wash tub  4 . A space S4 may be a space between the bottom of the second upper basket  312  and the ceiling of the wash tub  4 . 
     The heights of the first lower reception space S1 and the second lower reception space S2 may be determined by a distance from an obstacle located on the top of the lower basket  300 . For convenience of explanation, although the first upper basket  311  and the second upper basket  312  move, the first lower bottom and the second lower bottom will be defined as being stationary. 
     The first and second lower reception spaces S1 and S2 may be determined by a relation with an obstacle located on the top of the first and second lower bottoms that are defined as above. The first and second lower reception capacities may be determined by a relation with an obstacle located on the top of the first and second lower bottoms that are defined as above. 
     For example, when the first upper basket  311  is removed from the wash tub  4 , the first lower reception space S1 may be a space from the first lower bottom defined as above to the ceiling of the wash tub  4 . As another example, when the first upper basket  311  is placed on the second upper basket  312 , the first lower reception space S1 may be a space from the first lower bottom defined as above to the ceiling of the wash tub  4 . 
     In the above two examples, the first lower reception space S1 may be recognized as being the same. 
     In some implementations, the first lower reception space S1 may be formed between the first upper basket  311  and the lower basket  300 . The first low reception space S1 may be a space between the first lower bottom and the first upper basket  311  located over the first lower bottom. 
     The second upper basket  312  may be disposed side by side with the first upper basket  311 . The second lower reception space S2 may be formed between the second upper basket  312  and the lower basket  300 . The second lower reception space S2 may be a space between the second lower bottom and the second upper basket  312 . 
     The movement parts  321  and  323  (see  FIGS. 14 and 15 ) may be configured to move the first upper basket  311  to the second upper basket  312 . The movement parts  321  and  323  may increase or decrease the first lower reception space S1. The movement parts  321  and  323  may increase the height from the first lower bottom on which dishes can be placed. 
       FIG. 14  illustrates an example basket including an example movement part and example peripheral parts thereof.  FIG. 15  illustrates another example basket including an example movement part and example peripheral parts thereof. 
     Referring to  FIGS. 14 and 15 , movement parts  321  and  323  may include a frame  320  receiving a first upper basket  311 , adjustment parts  331  and  332  disposed on the frame  320  to adjust the height of the first upper basket  311 , and a rail  340  connected to the frame  320  such that the frame  320  can move to the second upper basket  312 . 
     The movement parts  321  and  323  may include the frame  320 . The frame  320  may hold the baskets  311  and  312 . The frame  320  may support the baskets  311  and  312 . The frame  320  may be connected to the rail  340 . The adjustment parts  331  and  332  may be disposed at the frame  320 . The frame  320  may be movably connected to the rail in a horizontal direction. The frame  320  may move in a horizontal direction in the wash tub  4 . 
     The first upper basket  311  may be disposed in the frame  320 . The first upper basket  311  may be housed in the frame  320 . The first upper basket  311  may be supported by the adjustment parts  331  and  332 . The height of the first upper basket  311  may be adjusted. The height of the first upper basket  311  may be adjusted by the adjustment parts  331  and  332 . 
     The adjustment parts  331  and  332  may adjust the height of the first upper basket  311 . The adjustment parts  331  and  332  may adjust the height of one side of the first upper basket  311 . The adjustment parts  331  and  332  may be disposed in plurality. 
     The rail  340  may be connected to the frame  320 . The rail  340  may support the frame  320 . The rail  340  may be configured such that the frame  320  can move in left and right directions. The rail  340  may be formed of wire. The rail  340  may be connected to the second upper basket  312 . The rail  340  may support the second upper basket  312 . 
     In some implementations, the dishwasher  1  may further include a stopping protrusion  315  formed on the first upper basket  311  and protruding to the side surface of the frame  320 . The adjustment part  331  may be movably disposed in a horizontal direction, and may include latch  331   a  that limits the vertical movement of the stopping protrusion  315 . 
     The stopping protrusion  315  may be formed on the first upper basket  311 . The stopping protrusion  315  may be formed on the outer side surface of the first upper basket  311 . The stopping protrusion  315  may protrude to the side surface of the frame  320 . The vertical movement of the stopping protrusion  315  may be limited by the latch  331   a . The movement path of the stopping protrusion  315  may cross the movement path of the latch  331   a . The movement path of the stopping protrusion  315  may orthogonally cross the movement path of the latch  331   a . The stopping protrusion  315  may be disposed in pairs on the front surface and the rear surface of the first upper basket  311  side by side. 
     The latch  331   a  may limit the vertical movement of the stopping protrusion  315 . The latch  331   a  may move in a horizontal direction. The latch  331   a  may cross the movement path of the stopping protrusion  315 . The movement path of the latch  331   a  may orthogonally cross the movement path of the stopping protrusion  315 . The latch  331   a  may be disposed in pairs at the front and rear sides of the frame  320 , respectively. 
     The latches  331   a  may be disposed in pairs at left and right sides. An elastic member  331   c  may be disposed between the latches  331   a . The elastic member  331   c  may be a spring. A button  331   b  may adjust the location of the latch  331   a . The button  331   b  may be disposed between the latches  331   a.    
     The button  331   b  may adjust an interval between the latches  331   a . When the button  331   b  is pushed, the interval between the latches  331   a  may be narrowed. When the button  331   b  is pushed, the latch  331   a  may move out of the movement path of the stopping protrusion  315 . The elastic member  331   c  may restore the location of the latch  331   a.    
     In other examples (see  FIG. 15 ), the adjustment part  332  may be rotatably disposed on the side surface of the frame  320  to lift the first upper basket  311  from the frame  320 . 
     The adjustment part  332  may be disposed on the side surface of the frame  320 . The adjustment part  332  may be rotatably disposed. The adjustment part  332  may be spaced from the rotation axis, and may extend to the bottom of the first upper basket  311 . The adjustment part  332  may be bent so as to support the bottom of the first upper basket  311 . The adjustment part  332  may be connected to left and right side surfaces of the frame  320  so as to support both ends of the first upper basket  311 . 
     The adjustment part  332  may include a lever  332   a  that lifts the first upper basket  311 . The lever  332   a  may extend from a portion that is rotatably connected to the frame  320 . A holder may be disposed on the side surface of the frame  320 . The holder may be disposed on the top of the rotation axis of the adjustment part  332 . The holder may limit the movement range of the lever  332   a . The holder may limit the lever  332   a  to a specific location. The holder may fix the lever  332   a  to fix the height of the first upper basket  311 . 
     The lever  332   a  may include a rotation protrusion  332   b . The rotation protrusion  332   b  may be disposed on the rotation axis of the adjustment part  332 . The rotation protrusion  332   b  may be rotatably inserted into the frame  320 . The rotation protrusion  332   b  may be connected to the lever  332   a.    
     The rail  340  may include a first rail  341 , a second rail  342 , a third rail  343  and a fourth rail  344  that are longitudinally arranged in left and right directions and are sequentially arranged in forward and backward directions in the wash tub  4 , and side rails  346  that are longitudinally disposed in forward and backward directions to connect the left ends and the right ends of the first to fourth rails  341 ,  342 ,  343  and  344 , respectively. The front surface and the rear surface of the second upper basket  312  may be mounted in the second rail  342  and the third rail  343 . 
     The rail  340  may be disposed inside the wash tub  4 . The rail  340  may support the frame  320 . The rail  340  may support the first upper basket  331  and the second upper basket  312 . The rail  340  may be longitudinally disposed in left and right directions. The rail  340  may be formed of wire. The rail  340  may be disposed in plurality. 
     The rail  340  may be parallelly disposed in left and right directions. The rail  340  may be disposed in plurality in forward and backward directions. The first rail  341 , the second rail  342 , the third rail  343 , and the fourth rail  344  may be sequentially disposed from the front side to the rear side. An interval between the second rail  342  and the third rail  343  may be sufficiently wide such that the second upper basket  312  can be disposed therebetween. The first upper basket  311  disposed side by side with the second upper basket  312  may be supported by the first rail  341  and the fourth rail  344 . The second rail  342  and the third rail  343  may support the front side and the rear side of the frame  320 . 
     The first upper basket  311  may be supported by the first rail  341  and the fourth rail  344  to be movable in left and right directions. The both ends of the first rail  341 , the second rail  342 , the third rail  343 , and the fourth rail  344  may be bent in a downward direction of the wash tub  4 . 
     The side rail  346  may be longitudinally disposed in forward and backward directions. The side rail  346  may be disposed in plurality in left and right directions. The side rail  346  may connect the left and right ends of the first rail  341 , the second rail  342 , the third rail  343 , and the fourth rail  344  in a straight-line. The side rail  346  may support the left and right ends of the first rail  341 , the second rail  342 , the third rail  343 , and the fourth rail  344  such that the left and right ends thereof are aligned in a line. The side rail  346  may be disposed to be movable in forward and backward directions in the wash tub  4 . The side rail  346  may be disposed to be movable to the door  2 . 
     The side rail  346  may be disposed in plurality in a vertical direction. The second rail  342  and the third rail  343  may support the front surface and the rear surface of the second upper basket  312 . The side rail  346  may be disposed in plurality so as to support the loads of the first and second upper baskets  311  and  312  and the frame  320 . The side rail  346  may be disposed such that a roller  360  can rotate. 
     In some implementations, the roller  360  may be disposed on the side rail  346  to allow the rail to move in forward and backward directions in the wash tub  4 . The roller  360  may be disposed on the side rail  346 . The roller  360  may be disposed in plurality on the side rail  346 . The side rail  346  may be disposed at left and right sides, and the side rail  346  disposed at one side may be disposed in plurality in a vertical direction. 
     In some examples, the dishwasher  1  may further include a guide panel  350  that has one side surface thereof connected to the frame  320  and the other side surface thereof with a hook  359  that hooks the rail  340  such that the frame  320  can move along the rail  340 . 
     The guide panel  350  may be connected to the front and rear surfaces of the frame  320 . The guide panel  350  may be connected to the front and rear sides of the frame  320 . The guide panel  350  may be connected to the first rail  341  and the fourth rail  344 . The guide panel  350  may fix the frame  320  to the first rail  341  and the fourth rail  344 . The guide panel  350  may connect the frame  320  to the first rail  341  and the fourth rail  344  such that the frame  320  can move in left and right directions. 
     A hook  359  may be formed on the guide panel  350 . The hook  359  may be formed in plurality on the guide panel  350 . The hook  359  may be formed in plurality on the upper side of the guide panel  350 . The hook  359  may be mounted on the first rail  341  and the fourth rail  344 . The hook  359  may be mounted on the first rail  341  and the fourth rail  344  such that the frame  320  can rotate in left and right directions. 
     The guide panel  350  may be disposed on the front surface and the rear surface of the frame  320 , respectively. The guide panel  350  may support the front and rear sides of the frame  320 . 
     In some implementations, the dishwasher  1  may include a wash tub  4  defining a space in which dishes are washed, a first upper basket  311  and a second upper basket  312  disposed side by side at an upper side of the wash tub  4 , a lower basket  300  disposed under the first upper basket  311  and the second upper basket  312  to define lower reception spaces S1 and S2 for receiving dishes, and movement parts  321  and  323  that allows the first upper basket  311  to be movable to the second upper basket  312  to increase the maximum height of the lower reception space S1 and S2. 
     Referring to  FIG. 13 , a height H1 may be a height from the bottom of the lower basket  300  to the bottom of the first upper basket  311  and the second upper basket  312 . A height H2 may be a height of the first upper basket  311  and the second upper basket  312 . A height H3 may be a height from the upper side surfaces of the first upper basket  311  and the second upper basket  312  to the ceiling of the wash tub  4 . 
     When the first upper basket  311  and the second upper basket  312  are disposed side by side, the maximum height of the lower reception spaces S1 and S2 may be the height H1. However, when the first upper basket  311  moves to the second upper basket  312 , the maximum height of the lower reception spaces S1 and S2 may become a height that is the sum of the heights H1, H2 and H3. 
     In some examples, the dishwasher  1  may include a wash tub  4  defining a space in which dishes are washed, a first upper basket  311  and a second upper basket  312  disposed side by side at an upper side of the wash tub  4 , a lower basket  300  disposed under the first upper basket  311  and the second upper basket  312  to receive dishes, and movement parts  321  and  323  that move the first upper basket  311  to the second upper basket  312  such that the first upper basket  311  overlaps the second upper basket  312  to increase the maximum height of a dish containable in the lower basket  300  by the height of a dish containable in the first upper basket  311 . 
     When the first upper basket  311  and the second upper basket  312  are disposed side by side, the maximum height of a dish containable in the lower basket  300  may become the height H1. The maximum height of a dish containable in the first upper basket  311  may be the sum of the heights H2 and H3. The movement part may allow the maximum height of a dish containable in the low basket  300  to become the height H4. The movement parts  321  and  323  may allow the maximum height of a dish containable in the low basket  300  to become the height H4. The movement parts  321  and  323  may increase the maximum height of a dish containable in the low basket  300  by the sum of the heights H2 and H3. 
       FIG. 16  illustrates an example use of a dishwasher  1 .  FIG. 17  illustrates another example use of a dishwasher  1 .  FIG. 18  illustrates still another example use of a dishwasher  1 .  FIG. 19  illustrates yet another example use of a dishwasher  1 . 
     Referring to  FIGS. 16 to 19 , the dishwasher  1  may include a first upper basket  311  and a second upper basket  312  that are disposed side by side. The height of the first upper basket  311  may be equal to the height of the second upper basket  312 . 
     The maximum height of a dish containable in the first upper basket  311  and the second upper basket  312  may be the sum of the heights H2 and H3. The dish reception capacities of the first upper basket  311  and the second upper basket  312  may be equal to each other. The dish reception spaces of the first upper basket  311  and the second upper basket  312  may be equal to each other. The spaces S3 and S4 may be equal to each other. 
     In some implementations, the dishwasher  1  may include a first upper basket  311  that inclines to one side (see  FIGS. 17A and 17B ). The height of the first upper basket  311  may be obliquely formed. The height of a dish containable in the first upper basket  311  may be oblique. The first upper basket  311  may contain a dish, one side of which is higher than the other side. 
     In some examples, the dishwasher  1  may include a first upper basket  311  and a second upper basket  312  that is disposed at a higher location than the first upper basket  311  (see  FIGS. 18A and 18B ). The first upper basket  311  may be disposed at a location diagonal to the second upper basket  312 . 
     The maximum height of a dish containable in the first upper basket  311  may be higher than the maximum height of a dish containable in the second upper basket  312 . For example, the first upper basket  311  can contain rice bowls or soup bowls. The second upper basket  312  may contain spoons and chopsticks. 
     In some implementations, the dishwasher  1  may include a first upper basket  311  and a second upper basket  312  that is disposed over the first upper basket  311  (see  FIGS. 19A and 19B ). The maximum height of a dish containable in the lower basket  300  may be higher at one side of the lower basket. In this case, the maximum height of a dish containable at one side of the low basket  300  may become the height H4. The maximum height of a dish containable at the other side of the low basket  300  may become the height H1 minus the height H2. 
     A dishwasher as described herein may have one or more of the following effects. 
     First, the height of a basket can be adjusted according to a necessity of a user. 
     Second, the capacity of dishes contained in the basket can be increased. 
     Third, it is possible to prevent a user from removing baskets to increase a space between baskets. 
     Hereinafter, the operation of the dish washer  1  configured as shown in  FIGS. 13-19  will be described as follows. 
     A user may open the door  2 , and then may withdraw the lower basket  300  disposed at a lower portion of the wash tub  4 . The lower basket  300  may contain dishes having relatively large sizes or diameters. When dishes contained in the lower basket  300  have large heights or large diameters, the upper portions of dishes may hit the first upper basket  311 . 
     A user may pull the rail disposed at an upper portion of the wash tub  4  to withdraw the first upper basket  311  and the second upper basket  312 . A user may lower the height of the first upper basket  311  using the adjustment parts  331  and  332 . The adjustment parts  331  may operate by a method of moving the latch  331   a  that limits the movement of the stopping protrusion  315  or by a method of pulling the lever  332   a  using the principle of the lever. 
     The first upper basket  311  may move to a location lower than the bottom of the second upper basket  312 . A user may move the frame  320  toward the second upper basket  312 . The frame  320  may be connected to the guide panel  350 , and the guide panel  350  may be connected to the first rail  341  and the fourth rail  344 . The first upper basket  311  may move so as to completely overlap the second upper basket  312 . 
     From the foregoing processes, the first upper basket  311  is positioned over one side of the lower basket  300  and is no longer positioned over the first lower bottom. Only the ceiling of the wash tub  4  is positioned over the first lower bottom. 
     Accordingly, the reception space at one side of the lower basket  300  may increase. Also, the amount of dishes containable at one side of the lower basket  300  may increase. Also, the maximum height of dishes containable at one side of the lower basket  300  may increase. The increased capacity may substantially increase the amount of dishes containable in the first upper basket  311 . 
     The increased space may substantially become a space that the first upper basket  311  occupies. The increased maximum height of dishes may substantially become a height (sum of the height H2 and the height H3) from the bottom of the first upper basket  311  to the ceiling of the wash tub  4 . Also, the maximum height of dishes containable in the lower basket  300  may become the height H4. 
     Also, the lower reception space S1 may increase through the foregoing processes. This is because the existing occupied space S3 moves to the side surface due to the movement of the first upper basket  311 . 
     Through the foregoing processes, a user can adjust the locations of the first upper basket  311  and the second upper basket  312 . Also, through the locations of the first upper basket  311  and the second upper basket  312 , the dish reception space of the lower basket  300  can be adjusted. 
     It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure. The implementations and examples should be considered in descriptive sense only and not for purposes of limitation. Therefore, the scope of the disclosure is not limited by the detailed description, but encompasses the full scope of the appended claims, and all differences within the scope will be construed as being included in the present disclosure.