Zipper slider with automatic resetting and locking function

Abstract

A zipper slider with an automatic resetting and locking function comprises an upper plate and a lower plate, further comprises a torsion member, an elastic piece, a first elastic member and a second elastic member, the elastic piece is provided with an acting end and a locking pin end, the torsion member is movably connected to the upper plate and located above the elastic piece; a bottom of the torsion member is provided with an avoidance notch adapted to the acting end, and torsion of the torsion member can drive the second elastic member to undergo elastic deformation; a user only needs to twist the torsion member while pulling the zipper slider in the present invention, and the user releases the hand, the zipper slider automatically resets to be locked, this increases the unlocking difficulty and reduces the probability of articles being stolen.

1 . A zipper slider with an automatic resetting and locking function, comprising a zipper slider body comprising an upper plate and a lower plate which are integrally connected by a support core, wherein the zipper slider further comprises a torsion member, an elastic piece, a first elastic member and a second elastic member which are installed at a top of the upper plate,
 the elastic piece is provided with an acting end and a locking pin end, and the acting end of the elastic piece is disposed above an end of the first elastic member and jacked by the end of the first elastic member,   the torsion member is movably connected to the upper plate and located above the elastic piece, and a bottom of the torsion member is provided with an avoidance notch adapted to the acting end,   the second elastic member is disposed on a moving path of the torsion member, and torsion of the torsion member can drive the second elastic member to undergo elastic deformation, and   the upper plate is further provided with a through hole for allowing the locking pin end to pass through downward;   when the torsion member is twisted without an external force, the second elastic member extends, the acting end is located in the avoidance notch, and the first elastic member extends to maintain jacking the acting end upward, and at this time, the locking pin end moves downward to pass through the through hole and enter a position below the upper plate, so that the locking pin end is clamped into zipper teeth, and the zipper slider is maintained in a stopped state;   when the torsion member is twisted by the external force, the second elastic member is compressed, and the avoidance notch is far away from the acting end, so that the torsion member presses the acting end downward, and the first elastic member is compressed, and at this time, the locking pin end is tilted upward to be detached from the zipper teeth, and the zipper slider is in an unlocked state and can slide along the zipper teeth; and   after the external force is removed, the second elastic member extends to twist the torsion member, the avoidance notch moves in a direction of the acting end to be reset, the acting end enters the avoidance notch again, and the zipper slider enters the stopped state again and is maintained in the stopped state.   
     
     
         2 . The zipper slider according to  claim 1 , wherein the zipper slider body is provided with an elastic member cavity penetrating through a top surface of the zipper slider body, the elastic member cavity being configured to house the first elastic member, and
 an elastic piece cavity is disposed above the elastic member cavity in a stacked manner, a cavity bottom of the elastic piece cavity is provided with the through hole, and the elastic piece cavity is configured to house the elastic piece;   a top of the upper plate is provided with a circular-arc sliding rail at an outer side of the elastic piece cavity, a bottom surface of the torsion member is provided with a sliding block protruding downward, and the sliding block is slidingly connected to the circular-arc sliding rail to achieve movable connection of the torsion member to the upper plate; and   the second elastic member is disposed on a sliding path of the sliding block, and the sliding block can drive the second elastic member to undergo elastic deformation when the torsion member is twisted.   
     
     
         3 . The zipper slider according to  claim 2 , wherein the second elastic member is a torsion spring, a sleeve column is disposed above the elastic piece cavity in a stacked manner, a cavity mouth of the elastic piece cavity is opened upward and penetrates through the sleeve column, and the torsion spring sleeves an outer side of the sleeve column;
 the torsion spring has a spring body, an end of the spring body extends outward to form a torsion arm, and the torsion arm is located on the sliding path of the sliding block; and   when the torsion member is twisted, the sliding block can drive the torsion arm to move, the torsion spring is compressed to store energy, and after the external force is removed, the torsion spring extends to release energy, thereby twisting the torsion member, and the avoidance notch moves in the direction of the acting end to be reset, the acting end enters the avoidance notch again, and the zipper slider enters the stopped state again and is maintained in the stopped state.   
     
     
         4 . The zipper slider according to  claim 3 , wherein the top of the upper plate is further provided with a circular ring coaxial with the sleeve column, and an inner ring of the circular ring is larger than the sleeve column to form a through slit for allowing the sliding block to pass through, and
 a bottom of the circular ring is suspended to form the circular-arc sliding rail, the sliding block is of a hook structure with an outward hook that can undergo elastic deformation, and when the torsion member is pressed downward, the hook structure is elastically deformed so that the hook passes through the through slit and are then clamped into the bottom of the circular ring, and the hook structure can slide along an inner ring wall of the circular ring.   
     
     
         5 . The zipper slider according to  claim 4 , wherein a top of the inner ring of the circular ring is provided with a slope notch for guiding the hook structure to slide down, an avoidance groove is disposed below the sleeve column at a position opposite to the slope notch, and the avoidance groove is recessed toward an axial center of the sleeve column. 
     
     
         6 . The zipper slider according to  claim 4 , wherein the inner ring of the circular ring is outwardly recessed to form a concave arc gap defining the moving path of the torsion arm, and an end of the torsion arm extends into the concave arc gap; and
 when the zipper slider is in the stopped state, the sliding block is located at one end of the concave arc gap, and the extended torsion arm is close to or in contact with the sliding block.   
     
     
         7 . The zipper slider according to  claim 2 , wherein the acting end and the first elastic member are disposed along a center line of the upper plate, two circular-arc sliding rails are provided and disposed at the top of the upper plate in left-right symmetry, and correspondingly, the bottom of the torsion member is provided with two sliding blocks which are in left-right symmetry; and
 twisting the torsion member to the left or right can compress the second elastic member and switch the zipper slider to be in the unlocked state.   
     
     
         8 . The zipper slider according to  claim 1 , wherein the bottom of the torsion member protrudes downward to form a conversion block, a bottom end of the conversion block is partially concaved upward to form the avoidance notch, the remaining part serves as a downward pressing structure for pressing the acting end downward, and circular arcs on both sides of the avoidance notch are transitioned to the downward pressing structure. 
     
     
         9 . The zipper slider according to  claim 2 , wherein a bottom center of the torsion member protrudes downward to form a rotating terminal, a top end of the elastic piece cavity is provided with a terminal cavity adapted to the rotating terminal in a stacked manner, and the rotating terminal extends into the terminal cavity and forms frictional rotating connection with a cavity wall. 
     
     
         10 . The zipper slider according to  claim 2 , wherein the elastic piece cavity comprises a transverse groove portion and a vertical groove portion which are crossed, one end of the vertical groove portion is disposed above the elastic member cavity, and the other end of the vertical groove portion is provided with the through hole; and
 the elastic piece is provided with a transverse portion and a vertical portion corresponding to the elastic piece cavity, the transverse portion is placed in the transverse groove portion, the vertical portion is placed in the vertical groove portion, and both ends of the vertical portion are disposed as the acting end and the locking pin end, respectively.   
     
     
         11 . The zipper slider according to  claim 1 , comprising a zipper slider body, wherein the zipper slider body comprises an upper plate and a lower plate which are integrally connected by a support core;
 the zipper slider further comprises a first elastic member, an elastic piece, and a torsion member which are installed at a top of the upper plate;   the elastic piece is provided with an acting end and a locking pin end, the acting end of the elastic piece is disposed above an end of the first elastic member and jacked by the end of the first elastic member, and the upper plate is provided with a through hole for allowing the locking pin end to pass through downward;   the torsion member is movably connected to the upper plate, the torsion member comprises an operation member, a switching shaft sleeve, and a torsion spring, the torsion spring is used as the second elastic member, the operation member and the switching shaft sleeve are integrally formed or separately disposed and relatively stationary, a bottom of the operation member is provided with the switching shaft sleeve protruding downward, the torsion spring sleeves an outer side of the switching shaft sleeve, a bottom end of the switching shaft sleeve is located above the elastic piece, and the bottom end of the switching shaft sleeve is provided with an avoidance notch adapted to the elastic piece and a downward pressing portion;   at least a first end of the torsion spring has a linkage relationship with the operation member, the upper plate is provided with a limiting notch for at least preventing movement of a second end of the torsion spring, and twisting the operation member can drive the torsion spring to undergo elastic deformation;   when the operation member is twisted without an external force, the torsion spring extends, the acting end is located in the avoidance notch, and the first elastic member extends to maintain jacking the acting end upward, and at this time, the locking pin end moves downward to pass through the through hole and enter a position below the upper plate, so that the locking pin end is clamped into zipper teeth, and the zipper slider is maintained in a locked state;   when the operation member is twisted by the external force, the torsion spring is compressed, and the avoidance notch is twisted away from the acting end, so that the downward pressing portion presses the acting end downward, and the first elastic member is compressed, and at this time, the locking pin end is tilted upward to be detached from the zipper teeth, and the zipper slider is in an unlocked state and can slide along the zipper teeth; and   after the external force is removed, the torsion spring extends to drive the torsion member to automatically rebound, the avoidance notch is reset in a direction of the acting end, the acting end enters the avoidance notch again, the locking pin end is clamped into the zipper teeth again, and the zipper slider enters the locked state again and is maintained in the locked state.   
     
     
         12 . The zipper slider according to  claim 11 , wherein the zipper slider body is provided with a first elastic member cavity penetrating through a top surface of the zipper slider body, the first elastic member cavity is configured to house the first elastic member, an elastic piece cavity is disposed above the first elastic member cavity in a stacked manner, a cavity bottom of the elastic piece cavity is provided with the through hole, and the elastic piece cavity is configured to house the elastic piece;
 when the torsion member covers the upper plate, an end of the switching shaft sleeve extends into the elastic piece cavity and is in contact with the elastic piece;   the top of the upper plate is further provided with an annular portion coaxial with the switching shaft sleeve, and a bottom of the annular portion is suspended as a circumferential sliding rail;   the operation member is provided with an annular side wall protruding downward, and the annular side wall protrudes toward an axial center to form a clamping-sliding block;   when a force is applied to press the torsion member downward, the clamping-sliding block slides over an outer ring of the annular portion and is then clamped into the bottom of the annular portion, the clamping-sliding block can slide along a bottom surface of the annular portion, and the annular portion is enclosed by the annular side wall; and   the annular side wall is provided with a through slot hole between the clamping-sliding block and a top surface of the operation member.   
     
     
         13 . The zipper slider according to  claim 12 , wherein a bottom of the operation member is provided with two circlip portions protruding downward corresponding to the first end and the second end of the torsion spring, the circlip portions are located at an outer side of the switching shaft sleeve, and the first end and the second end of the torsion spring are located on moving paths of the circlip portions, so that the torsion spring has a linkage relationship with the operation member; and
 when the clamping-sliding block of the operation member are slidingly twisted along the circumferential sliding rail by the external force, the circlip portions can drive the first end or the second end of the torsion spring to move, and the torsion spring is compressed; and after the external force is removed, the moving first end or second end automatically rebounds, thereby driving the circlip portions to reset, i.e., the torsion member is reset.   
     
     
         14 . The zipper slider according to  claim 11 , wherein in assemblies of the torsion member, at least the operation member is made of metal or an alloy;
 an outer periphery of the torsion member is provided with a riveting structure, the upper plate is provided with an anti-detachment edge, the riveting structure is bent so that the riveting structure is movably hooked to the anti-detachment edge, and then the torsion member is movably connected to the upper plate.   
     
     
         15 . The zipper slider according to  claim 14 , wherein the limiting notch is located at an outer side of the elastic piece cavity;
 the top of the upper plate protrudes outwardly at an outer side of the limiting notch to form the anti-detachment edge, the anti-detachment edge is of an annular structure coaxial with the switching shaft sleeve, and a bottom of the anti-detachment edge is suspended;   the operation member is provided with a panel portion and an annular side wall located at one side of the panel portion, a cavity that opens towards the zipper slider body is formed in the operation member, an end of the annular side wall is provided with the riveting structure, and the riveting structure comprises a plurality of riveting terminals circumferentially distributed;   after the torsion member covers the upper plate, the anti-detachment edge is contained in the cavity, all the riveting terminals are bent in a direction of the anti-detachment edge, the riveting terminals are movably hooked to the bottom of the anti-detachment edge, and then the torsion member is rotatably connected to the upper plate;   an outer surface of the operation member is wrapped with a rubber sleeve; and   the rubber sleeve is a transparent rubber sleeve, the transparent rubber sleeve and the operation member are relatively stationary, and the transparent rubber sleeve is not in contact with the zipper slider body.