Patent Publication Number: US-10780592-B2

Title: Knife

Description:
TECHNICAL FIELD 
     The present disclosure relates to the field of tools, and more particularly to a knife. 
     BACKGROUND 
     In the existing knife with a detachable blade, the blade can be taken out only after a locking structure is detached by other tools such as a screwdriver, and furthermore, the knife is loosened in a threaded manner. These mechanisms cause inconvenience in use, and the blade cannot be quickly assembled and disassembled. 
     SUMMARY 
     Some embodiments of the present disclosure provide a knife, so as to solve the problem in the related technology that it is more complicated to disassemble blade of a knife. 
     To achieve the foregoing objective, an embodiment of the present disclosure provides a knife, including: blade; a first hilt assembly; a second hilt assembly, the blade being detachably disposed between the first hilt assembly and the second hilt assembly; a connecting portion, disposed on the first hilt assembly; and a handle clip, disposed on the second hilt assembly, wherein a position of the connecting portion is adjustable, such that the connecting portion has a locking position connected to the handle clip and an opening position separated from the handle clip. 
     In an exemplary embodiment, the handle clip is disposed on the second hilt assembly in a position adjustable manner, the handle clip has a first position and a second position, when the handle clip is at the first position, the connecting portion is fixed to the locking position, and when the handle clip is at the second position, the connecting portion moves from the locking position to the opening position. 
     In an exemplary embodiment, the handle clip is provided with a first sliding groove, the connecting portion penetrates into the first sliding groove, and when the handle clip moves between the first position and the second position, the connecting portion slides relative to the first sliding groove. 
     In an exemplary embodiment, the first sliding groove includes: a first sliding groove segment, the first sliding groove segment extending along a movement direction of the handle clip; and a second sliding groove segment, the second sliding groove segment communicating with the first sliding groove segment, wherein when the handle clip is at the first position, a part of the connecting portion is locked in the first sliding groove segment, and when the handle clip is at the second position, the connecting portion penetrates through the second sliding groove segment and is separated from the handle clip. 
     In an exemplary embodiment, the connecting portion is a connecting rod, at least part of the first sliding groove segment is a rectangular groove, the second sliding groove segment is an arc-shaped groove, and a diameter of a partial rod segment, close to the second hilt assembly, of the connecting portion is greater than an opening width D 1  of the first sliding groove segment, such that the connecting portion is locked on the handle clip; and an opening width D 2  of the second sliding groove segment is greater than the maximum diameter of the connecting portion, such that the connecting portion is separated from the handle clip. 
     In an exemplary embodiment, the knife further includes: an elastic piece, a first end of the elastic piece is abutted against the first hilt assembly, a second end of the elastic piece is abutted against the connecting portion, and the elastic piece is able to stretch out and draw back, wherein when the handle clip is at the first position, the connecting portion compresses the elastic piece, and when the handle clip is at the second position, the elastic piece stretches to push the connecting portion to be separated from the handle clip. 
     In an exemplary embodiment, the knife further includes: a stopping portion, the stopping portion being disposed on the second hilt assembly in a position adjustable manner, the stopping portion having an unlocking position and a fixed position, wherein when the stopping portion is at the unlocking position, the handle clip is movable to the second position from the first position, and when the stopping portion is at the fixed position and the handle clip moves to a predetermined position, the stopping portion is in limited contact with the handle clip, the predetermined position being located between the first position and the second position, and the handle clip being movable between the first position and the predetermined position. 
     In an exemplary embodiment, the second hilt assembly is provided with a second sliding groove, and the stopping portion includes: a stopping sheet, the stopping sheet being disposed on one side, close to the connecting portion, of the second hilt assembly, and the stopping sheet being configured to be in limited contact with the handle clip; and an operating rod, the operating rod penetrating through the second sliding groove and being connected to the stopping sheet, and the operating rod being located outside the second hilt assembly, wherein the operating rod is movably disposed in the second sliding groove, such that the stopping sheet has the unlocking position and the fixed position. 
     In an exemplary embodiment, the blade is rotatably disposed at a first end of the first hilt assembly and the second hilt assembly, the connecting portion is disposed at a second end of the first hilt assembly, and the handle clip is disposed at a second end of the second hilt assembly. 
     In an exemplary embodiment, the knife further includes: a connecting shaft, a first end of the connecting shaft being detachably connected to the second hilt assembly, and a second end of the connecting shaft penetrating through the blade and being connected to the first hilt assembly, wherein the second end of the connecting shaft is provided with a locking portion, and the connecting shaft is rotatably disposed relative to the first hilt assembly, such that the locking portion has a third position clamped with the first hilt assembly and a fourth position separated from the first hilt assembly. 
     In an exemplary embodiment, the blade is provided with a first clamping groove, the first hilt assembly is provided with a second clamping groove, the locking portion penetrates through the first clamping groove and the second clamping groove in sequence, when the locking portion is at the third position, the locking portion is clamped with the second clamping groove, and when the locking portion is at the fourth position, the locking portion may penetrate through the first clamping groove and the second clamping groove. 
     Blade of the knife of the present disclosure can be quickly disassembled from a first hilt assembly and a second hilt assembly through a connecting portion and a handle clip. The blade is detachably disposed between the first hilt assembly and the second hilt assembly, the connecting portion is disposed on the first hilt assembly, and the handle clip is disposed on the second hilt assembly. During mounting, the position of the connecting portion is adjusted, so that the connecting portion is connected to the handle clip, thereby stably clamping the blade between the first hilt assembly and the second hilt assembly. During disassembling, the position of the connecting portion is adjusted, so that the connecting portion is separated from the handle clip, thereby separating the blade from the first hilt assembly and the second hilt assembly. Blade of the knife of the present disclosure can be quickly disassembled from a first hilt assembly and a second hilt assembly through a connecting portion and a handle clip, thereby solving the problem in the related technology that it is more complicated to disassemble blade of a knife. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the present disclosure, and the exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure, but do not constitute improper limitations to the present disclosure. In the drawings: 
         FIG. 1  illustrates a schematic diagram of a breakdown structure of a knife according to the present disclosure from a first perspective; 
         FIG. 2  illustrates a schematic diagram of a breakdown structure of a knife according to the present disclosure from a second perspective; 
         FIG. 3  illustrates an exploded schematic diagram of a partial structure of a knife according to the present disclosure from a first perspective; 
         FIG. 4  illustrates an exploded schematic diagram of a partial structure of a knife according to the present disclosure from a second perspective; 
         FIG. 5  illustrates a schematic diagram of a breakdown structure of a first hilt assembly and a second hilt assembly of a knife according to the present disclosure; and 
         FIG. 6  illustrates a schematic diagram of an assembled structure of a knife according to the present disclosure. 
     
    
    
     The drawings include the following reference signs: 
       10 : blade;  11 : first clamping groove;  20 : first hilt assembly;  21 : second clamping groove;  22 : first mask;  23 : first handle;  30 : second hilt assembly;  31 : second handle;  32 : second mask;  33 : second sliding groove;  41 : connecting portion;  42 : elastic piece;  50 : handle clip;  51 : first sliding groove;  511 : first sliding groove segment;  512 : second sliding groove segment;  60 : stopping portion;  61 : stopping sheet;  62 : operating rod;  70 : connecting shaft;  71 : locking portion;  80 : trailing spring. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     It is to be noted that in the case of no conflict, the features in the embodiments and the embodiments in the present application may be combined with each other. The present disclosure is described below with reference to the drawings and in conjunction with the embodiments in detail. 
     It is to be noted that the following detailed description is illustrative and is intended to provide a further description of the present application. All technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs, unless otherwise indicated. 
     It is to be noted that terms used herein only aim to describe specific implementation manners, and are not intended to limit exemplar implementations of this application. Unless otherwise directed by the context, singular forms of terms used herein are intended to include plural forms. Besides, it will be also appreciated that when terms “contain” and/or “include” are used in the description, it is indicated that features, steps, operations, devices, assemblies and/or a combination thereof exist. 
     The present disclosure provides a knife. Referring to  FIG. 1  to  FIG. 6 , the knife includes: blade  10 ; a first hilt assembly  20 ; a second hilt assembly  30 , the blade  10  being detachably disposed between the first hilt assembly  20  and the second hilt assembly  30 ; a connecting portion  41 , the connecting portion  41  being disposed on the first hilt assembly  20 ; and a handle clip  50 , the handle clip  50  being disposed on the second hilt assembly  30 , wherein a position of the connecting portion  41  is adjustable, such that the connecting portion  41  has a locking position connected to the handle clip  50  and an opening position separated from the handle clip  50 . 
     The blade  10  of the knife of the present disclosure can be quickly disassembled from the first hilt assembly  20  and the second hilt assembly  30  through the connecting portion  41  and the handle clip  50 . The blade  10  is detachably disposed between the first hilt assembly  20  and the second hilt assembly  30 , the connecting portion  41  is disposed on the first hilt assembly  20 , and the handle clip  50  is disposed on the second hilt assembly  30 . During mounting, the position of the connecting portion  41  is adjusted, so that the connecting portion  41  is connected to the handle clip  50 , thereby stably clamping the blade  10  between the first hilt assembly  20  and the second hilt assembly  30 . During disassembling, the position of the connecting portion  41  is adjusted, so that the connecting portion  41  is separated from the handle clip  50 , thereby separating the blade  10  from the first hilt assembly  20  and the second hilt assembly  30 . The blade  10  of the knife of the present disclosure can be quickly disassembled from the first hilt assembly  20  and the second hilt assembly  30  through the connecting portion  41  and the handle clip  50 , thereby solving the problem in the related technology that it is more complicated to disassemble blade of a knife. 
     In order to make the connecting portion  41  movable between the locking position and the opening position, the handle clip  50  is disposed on the second hilt assembly  30  in a position adjustable manner, the handle clip  50  has a first position and a second position, when the handle clip  50  is at the first position, the connecting portion  41  is fixed to the locking position, and when the handle clip  50  is at the second position, the connecting portion  41  moves from the locking position to the opening position. 
     In the present embodiment, the handle clip  50  is disposed on the second hilt assembly  30  in a position adjustable manner, so that the handle clip  50  has the first position and the second position. 
     In the present embodiment, when the handle clip  50  is at the first position, the connecting portion  41  is fixed at the locking position, and at this time, the connecting portion  41  is connected to the handle clip  50 . When the handle clip  50  is at the second position, the connecting portion  41  moves from the locking position to the opening position, and at this time, the connecting portion  41  is separated from the handle clip  50 . 
     In order to make the connecting portion  41  not affect a movement of the handle clip  50  between the first position and the second position, as shown in  FIG. 1 , the handle clip  50  is provided with a first sliding groove  51 , the connecting portion  41  penetrates into the first sliding groove  51 , and when the handle clip  50  moves between the first position and the second position, the connecting portion  41  slides relative to the first sliding groove  51 . 
     In the present embodiment, the handle clip  50  is provided with a first sliding groove  51 , wherein the connecting portion  41  penetrates into the first sliding groove  51 , and when the handle clip  50  moves between the first position and the second position, the connecting portion  41  slides relative to the first sliding groove  51 . 
     For the specific structure of the first sliding groove  51 , as shown in  FIG. 1 , the first sliding groove  51  includes: a first sliding groove segment  511 , the first sliding groove segment  511  extending along a movement direction of the handle clip  50 ; and a second sliding groove segment  512 , the second sliding groove segment  512  communicating with the first sliding groove segment  511 , wherein when the handle clip  50  is at the first position, a part of the connecting portion  41  is locked in the first sliding groove segment  511 , and when the handle clip  50  is at the second position, the connecting portion  41  penetrates through the second sliding groove segment  512  and is separated from the handle clip  50 . 
     In the present embodiment, the first sliding groove  51  is composed of the first sliding groove segment  511  and the second sliding groove segment  512 , wherein the first sliding groove segment  511  extends along a movement direction of the handle clip  50 , and the second sliding groove segment  512  communicates with the first sliding groove segment  511 . 
     In the present embodiment, when the handle clip  50  is at the first position, a part of the connecting portion  41  is locked in the first sliding groove segment  511 , and at this time, the connecting portion  41  is connected to the handle clip  50 . When the handle clip  50  is at the second position, the connecting portion  41  penetrates through the second sliding groove segment  512  and is separated from the handle clip  50 . 
     Preferably, the connecting portion  41  is a connecting rod, at least part of the first sliding groove segment  511  is a rectangular groove, the second sliding groove segment  512  is an arc-shaped groove, and a diameter of a partial rod segment, close to the second hilt assembly  30 , of the connecting portion  41  is greater than an opening width D 1  of the first sliding groove segment  511 , such that the connecting portion  41  is locked on the handle clip  50 ; and an opening width D 2  of the second sliding groove segment  512  is greater than the maximum diameter of the connecting portion  41 , such that the connecting portion  41  is separated from the handle clip  50 . 
     In the present embodiment, the first sliding groove  51  is a through groove. 
     In order to make the connecting portion  41  automatically move from the locking position to the opening position, as shown in  FIG. 1  and  FIG. 2 , the knife further includes: an elastic piece  42 , a first end of the elastic piece  42  is abutted against the first hilt assembly  20 , a second end of the elastic piece  42  is abutted against the connecting portion  41 , and the elastic piece  42  is able to stretch out and draw back, wherein when the handle clip  50  is at the first position, the connecting portion  41  compresses the elastic piece  42 , and when the handle clip  50  is at the second position, the elastic piece  42  stretches to push the connecting portion  41  to be separated from the handle clip  50 . 
     In the present embodiment, the elastic piece  42  is disposed on the knife, wherein the first end of the elastic piece  42  urges against the first hilt assembly  20 , and the second end of the elastic piece  42  urges against the connecting portion  41 . 
     Optionally, a first end of the elastic piece  42  urges against the second hilt assembly  30 , and a second end of the elastic piece  42  urges against the connecting portion  41 . 
     In the present embodiment, the elastic piece  42  is able to stretch out and draw back, so that when the handle clip  50  is at the first position, the connecting portion  41  compresses the elastic piece  42 . At this time, since the connecting portion  41  is locked on the handle clip  50 , an elastic force of the elastic piece  42  cannot pop up the connecting portion. When the handle clip  50  is at the second position, the connecting portion  42  stretches to push the connecting portion  41  to be separated from the handle clip  50 . 
     In the present embodiment, the elastic piece  42  is a spring. 
     In order to ensure that the handle clip  50  moves between the first position and the second position, as shown in  FIG. 3  and  FIG. 4 , the knife further includes: a stopping portion  60 , the stopping portion  60  being disposed on the second hilt assembly  30  in a position adjustable manner, the stopping portion  60  having an unlocking position and a fixed position, wherein when the stopping portion  60  is at the unlocking position, the handle clip  50  is movable to the second position from the first position, and when the stopping portion  60  is at the fixed position and the handle clip  50  moves to a predetermined position, the stopping portion  60  is in limited contact with the handle clip  50 , the predetermined position being located between the first position and the second position, and the handle clip  50  being movable between the first position and the predetermined position. 
     In the present embodiment, the stopping portion  60  is disposed on the knife, wherein the stopping portion  60  is disposed on the second hilt assembly  30  in a position adjustable manner, and the stopping portion  60  has the unlocking position and the fixed position. 
     When the stopping portion  60  is at the unlocking position, the handle clip  50  is movable to the second position from the first position. When the stopping portion  60  is at the fixed position and the handle clip  50  moves to a predetermined position, the stopping portion  60  is in limited contact with the handle clip  50 , wherein the predetermined position is located between the first position and the second position, and the handle clip  50  is movable between the first position and the predetermined position. 
     In the present embodiment, the handle clip  50  has three basic positions, that is, the first position, the predetermined position and the second position, and when the handle clip  50  is at the first position, the handle clip  50  is in a retracted state. When the handle clip  50  is at the predetermined position and the second position, the handle clip  50  is in a stretching state. 
     In order to make the stopping portion  60  have the unlocking position and the fixed position, as shown in  FIG. 4 , the second hilt assembly  30  is provided with a second sliding groove  33 , and the stopping portion  60  includes: a stopping sheet  61 , the stopping sheet  61  being disposed on one side, close to the connecting portion  41 , of the second hilt assembly  30 , and the stopping sheet  61  being configured to be in limited contact with the handle clip  50 ; and an operating rod  62 , the operating rod  62  penetrating through the second sliding groove  33  and being connected to the stopping sheet  61 , and at least part of the operating rod  62  being located outside the second hilt assembly  30 , wherein the operating rod  62  is movably disposed in the second sliding groove  33 , such that the stopping sheet  61  has the unlocking position and the fixed position. 
     In the present embodiment, the second hilt assembly  30  includes a second mask  32  and a second handle  31 , wherein the stopping portion  60  is disposed on the second handle  31 , and the second mask  32  is provided with a contact point in contact with the operating rod  62 , so as to determine that the stopping portion  60  is located at the unlocking position and the fixed position. 
     Preferably, the blade  10  is rotatably disposed at a first end of the first hilt assembly  20  and the second hilt assembly  30 , the connecting portion  41  is disposed at a second end of the first hilt assembly  20 , and the handle clip  50  is disposed at a second end of the second hilt assembly  30 . 
     Preferably, as shown in  FIG. 5 , the knife further includes: a connecting shaft  70 , a first end of the connecting shaft  70  being detachably connected to the second hilt assembly  30 , and a second end of the connecting shaft  70  penetrating through the blade  10  and being connected to the first hilt assembly  20 , wherein the second end of the connecting shaft  70  is provided with a locking portion  71 , and the connecting shaft  70  is rotatably disposed relative to the first hilt assembly  20 , such that the locking portion  71  has a third position clamped with the first hilt assembly  20  and a fourth position separated from the first hilt assembly  20 . 
     Preferably, the blade  10  is provided with a first clamping groove  11 , the first hilt assembly  20  is provided with a second clamping groove  21 , the locking portion  71  penetrates through the first clamping groove  11  and the second clamping groove  21  in sequence, when the locking portion  71  is at the third position, the locking portion  71  is clamped with the second clamping groove  21 , and when the locking portion is at the fourth position, the locking portion  71  may penetrate through the first clamping groove  11  and the second clamping groove  21 . 
     In the present embodiment, the first hilt assembly  20  includes the first mask  22  and the first handle  23 , the second clamping groove  21  being provided on the first mask  22 . 
     In the present embodiment, the handle clip  50  includes a first clamping arm, a second clamping arm and a connecting portion, the connecting portion is disposed between the first clamping arm and the second clamping arm, and at least part of the second hilt assembly  30  is clamped between the first clamping arm and the second clamping arm. 
     In the present embodiment, the knife further includes a tailing spring  80 , the tailing spring  80  being disposed on the first hilt assembly  20 . 
     The first clamping groove  11  and the second clamping groove  21  in the knife of the present disclosure are butterfly-shaped through holes, and the locking portion  71  is a butterfly-shaped lock. When the locking portion  71  fits the first clamping groove  11 , the blade  10  rotates by taking the connecting shaft  70  as the axis, and reaches a locked state (the third position) through the butterfly-shaped lock. 
     The first hilt assembly  20  rotates clockwise for 90 degrees by taking the connecting shaft  70  as the axis, and forms a first locking state through the butterfly-shaped lock. 
     As shown in  FIG. 1  and  FIG. 3 , the tail of the first hilt assembly  20  is provided with a lock pin assembly formed by connecting a spring and a lock pin (connecting portion  41 ) through a screw. A locking head is disposed at one end of the lock pin, and the lock pin pushes leftward against the outside of a handle through the spring under an unlocking state, so as to prevent interference during the rotation of the first hilt assembly  20 . 
     As shown in  FIG. 1 ,  FIG. 3  and  FIG. 6 , a sliding sheet part of a clip (handle clip  50 ) between the second mask  32  and the second handle  31  is provided with a sliding groove (first sliding groove  51 ), a groove body part of the sliding groove is set so that the width is smaller than a diameter of the locking head on the lock pin, one end of the sliding groove is provided with a lock pin hole, and the lock pin hole is set to be larger than the locking head on the lock pin in diameter. When the clip is pushed manually to make the lock pin hole and the lock pin concentric, the lock pin is pressed manually to make the locking head at one end of the lock pin completely penetrate through the sliding sheet part of the clip, the clip is pushed manually to move toward a knife bit, and the clip reaches a locking state, so that the blade  10 , the first hilt assembly  20  and the second hilt assembly  30  form a second locking state. 
     As shown in  FIG. 1 ,  FIG. 3  and  FIG. 6 , a sliding sheet (stopping portion  60 ) between the second mask  32  and the second handle  31  is provided with a pin head (operating rod  62 ). When the pin head is pushed manually to make the locking sheet to move toward the clip, the clip is under the second locking state, the clip is limited by the locking sheet, and the locking sheet prevents the lock pin hole on the clip and the lock pin from being concentric when sliding through the clip, so that the clip cannot be unlocked under a free pushing state, so as to form a third locking state. 
     Under the above state, the overall assembling of a knife is completed so as to achieve the purpose of assembling, disassembling and replacing blade, and the knife can be unlocked and disassembled when three locking states are reverse. 
     The present disclosure has the advantages that the structure is simple; the knife can be assembled by three locking states completed in sequence; various mechanisms fit each other to facilitate assembly and disassembly; blade can be replaced conveniently; the operation strength is uniform and mild; the structure fit is tight, and the safety is high. 
     From the above description, it can be seen that the above embodiments of the present disclosure achieve the following technical effects: 
     The blade  10  of the knife of the present disclosure can be quickly disassembled from the first hilt assembly  20  and the second hilt assembly  30  through the connecting portion  41  and the handle clip  50 . The blade  10  is detachably disposed between the first hilt assembly  20  and the second hilt assembly  30 , the connecting portion  41  is disposed on the first hilt assembly  20 , and the handle clip  50  is disposed on the second hilt assembly  30 . During mounting, the position of the connecting portion  41  is adjusted, so that the connecting portion  41  is connected to the handle clip  50 , thereby stably clamping the blade  10  between the first hilt assembly  20  and the second hilt assembly  30 . During disassembling, the position of the connecting portion  41  is adjusted, so that the connecting portion  41  is separated from the handle clip  50 , thereby separating the blade  10  from the first hilt assembly  20  and the second hilt assembly  30 . The blade  10  of the knife of the present disclosure can be quickly disassembled from the first hilt assembly  20  and the second hilt assembly  30  through the connecting portion  41  and the handle clip  50 , thereby solving the problem in the related technology that it is more complicated to disassemble blade of a knife. 
     It is to be noted that the specification and claims of the present application and the terms “first”, “second” and the like in the drawings are used to distinguish similar objects, and do not need to describe a specific sequence or a precedence order. It will be appreciated that data used in such a way may be exchanged under appropriate conditions, in order that the embodiments of the present application described here can be implemented in a sequence other than sequences graphically shown or described here. In addition, terms ‘include’ and ‘have’ and any variations thereof are intended to cover non-exclusive inclusions. For example, it is not limited for processes, methods, systems, products or devices containing a series of steps or units to clearly list those steps or units, and other steps or units which are not clearly listed or are inherent to these processes, methods, products or devices may be included instead. 
     For ease of description, spatial relative terms such as “over”, “above”, “on an upper surface” and “upper” may be used herein for describing a spatial position relation between a device or feature and other devices or features shown in the drawings. It will be appreciated that the spatial relative terms aim to contain different orientations in usage or operation besides the orientations of the devices described in the drawings. For example, if the devices in the drawings are inverted, devices described as “above other devices or structures” or “over other devices or structures” will be located as “below other devices or structures” or “under other devices or structures”. Thus, an exemplar term “above” may include two orientations namely “above” and “below”. The device may be located in other different modes (rotated by 90 degrees or located in other orientations), and spatial relative descriptions used herein are correspondingly explained. 
     The above is only the preferred embodiments of the present disclosure, not intended to limit the present disclosure. As will occur to those skilled in the art, the present disclosure is susceptible to various modifications and changes. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present disclosure shall fall within the scope of protection of the present disclosure.