CN113349525B - Zipper head - Google Patents

Abstract

The invention relates to the technical field of articles for daily use, in particular to a zipper head, which comprises a zipper head main body, a stop block, an upper clamping piece, an upright post and a lower clamping piece, wherein the lower end of the stop block is fixedly connected with the upper clamping piece, the lower end of the upper clamping piece is fixedly connected with the upright post, the second pulling piece is pulled to enable the second pulling piece to move backwards along a displacement groove, a stress plate extrudes a spring plate at the moment, the spring plate is forced to deform, meanwhile, the abutting block moves synchronously with the second pulling piece, the abutting block is enabled to lose the abutting of the clamping block, the clamping block moves upwards along the clamping groove under the action of the spring plate, the abutting effect of the clamping block on a zipper is enabled to be lost, at the moment, the zipper head main body can complete movement and open the zipper, the clamping block and the spring plate are mutually limited by hinging, so that the second pulling piece cannot fall off, and when a user stops pulling, the clamping block is enabled to be clamped into a gap of a zipper chain again, so that the zipper head main body is blocked, and a non-legal person cannot easily open the zipper, and the security is enabled to have an anti-theft effect.

Description

Zipper head

Technical Field

The invention relates to the technical field of articles for daily use, in particular to a zipper puller.

Background

The slide fastener is a connecting piece for combining or separating articles by means of continuously arranged fastener elements, and is currently used for clothing, bags, tents and the like in a large number. The fastener can be composed of two strips with a row of metal teeth or plastic teeth respectively, and is used for connecting the edge of an opening (such as cloth or a pocket), a sliding piece can pull the two rows of teeth into an interlocking position to close the opening, and the fastener can also be connected to something (as a hoisted or dropped object) to tighten, stabilize or guide a chain of the object;

the prior patent (bulletin number: CN 102894554B) discloses a combined zipper head, which comprises a zipper head upper body, a zipper head lower body, a connecting device and a top cover, and is characterized in that the connecting device comprises a column body fixedly and vertically arranged on the zipper head lower body, a connecting hole with a shape corresponding to the column body is arranged on the zipper head upper body corresponding to the position of the column body, wherein the column body is divided into an upper small column and a lower large column, and the shape and the size of the upper small column are consistent with those of the connecting hole; a concave position is arranged at an upper layer small column above the upper body of the zipper head after the upper body of the zipper head is combined with the lower body of the zipper head, and after the concave position is combined with the top cover, the top cover corresponding to the concave position is stamped and fixed into a whole; the invention provides a combined zipper head which is applicable to metal, plastic (such as nylon, plastic and the like), is firmer after being combined and has a simple structure.

1. In the above patent, the assembly of the zipper head can be realized through the combination of a plurality of parts, but the zipper head does not have a self-locking anti-theft function when in use, so that the wallet using the zipper head is easy to be opened by illegal personnel, thereby threatening the property safety of people;

2. people often encounter the condition that the zipper blocks the cloth edges at two side areas of the chain when using the zipper, so that the zipper cannot move to influence the normal use of the zipper.

For this purpose, a slider is proposed.

Disclosure of Invention

The present invention is directed to a slider for solving the above-mentioned problems.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a zipper head, includes zipper head main part, dog, upper clamping piece, stand, lower clamping piece, dog lower extreme fixed connection upper clamping piece, and upper clamping piece lower extreme fixed connection stand, stand lower extreme swing joint lower clamping piece, the round hole has been seted up in the middle of the dog, and round slot has been seted up to round hole annular internal surface, the inside swing joint of round slot has the ring piece, and fixedly connected with pull tab one in the middle of the ring piece, the inside anti-theft mechanism that is provided with of zipper head main part;

the anti-theft mechanism comprises a displacement groove, a second pull sheet, a cavity, spring plates, stress plates, abutting blocks, clamping grooves and clamping blocks, wherein the displacement groove is formed in the first pull sheet, the second pull sheet is movably connected in the displacement groove, the cavity is formed in the middle of the first pull sheet, the cavity penetrates through the first pull sheet, the spring plates are fixedly connected to the rear end of the inner surface of the cavity, the number of the displacement grooves is two, the displacement grooves are of L-shaped structural design, two ends of the displacement grooves are in opening states, the second pull sheet is fixedly connected with the abutting blocks at one side of the ring blocks, the transverse cross section of the second pull sheet is of a mountain-shaped structural design, the outer surface of the front end of the second pull sheet is fixedly connected with the stress plates, the stress plates are located in the cavity, the longitudinal cross section of the stress plates is of triangular structural design, the stress plates correspond to the spring plates, the clamping grooves are formed in positions corresponding to the abutting blocks, the annular inner surfaces of the clamping grooves are fixedly connected with the clamping blocks, the clamping blocks are fixedly connected with the inner surfaces of the clamping blocks, and the clamping blocks penetrate through the clamping grooves and are hinged to the clamping blocks.

By adopting the technical scheme, the traditional zipper puller does not have a self-locking anti-theft function, when the zipper puller works, the spring plate extrudes the stress plate, the pull piece II is forced to move forwards along the displacement groove until the abutting block is contacted with the upper end of the clamping block in the clamping groove, the clamping block is forced to resist the gap of the zipper by downwards moving along the clamping groove, the circle center of the abutting block is parallel to the ring block, when a user needs to open the zipper, the pull piece II is pulled to enable the pull piece II to move backwards along the displacement groove, the stress plate extrudes the spring plate at the moment, the spring plate is forced to deform, meanwhile, the abutting block is enabled to move synchronously with the pull piece II, the abutting block loses resistance to the clamping block, the clamping block moves upwards along the clamping groove under the action of the spring plate, so that the abutting effect to the zipper is lost, at the moment, the zipper puller main body can complete movement and open the zipper, the clamping block and the spring plate are mutually limited to prevent the clamping block from falling off, when the user stops pulling, the pull piece II is reset under the extrusion of the spring plate, the clamping block is blocked into the gap of the zipper, so that the zipper puller main body is enabled not to be easy to be opened, and the elasticity of the spring plate cannot be easily increased.

Preferably, the number of the displacement grooves is two, the length of the right side of the displacement grooves is shorter than that of the left side of the displacement grooves, the two displacement grooves and the two pull tabs are correspondingly matched, the number of the clamping grooves and the two clamping blocks is two, and the two clamping grooves and the two clamping blocks are respectively positioned on the right side and the left side of the upper clamping piece and are in contact with the corresponding abutting blocks.

Through adopting above-mentioned technical scheme, in order to improve the self-locking effect of zipper head, during operation, the fixture block corresponds with the draw-in groove and the gap above the zipper strip, supports the piece simultaneously and corresponds with the fixture block, and when the user released pull tab two, two sets of pieces of support can resist two sets of fixture blocks respectively under the effect of springboard to further improve the self-locking theftproof effect of zipper head main part.

Preferably, the second pull tab is internally provided with a U-shaped cavity, the front end and the rear end of the U-shaped cavity are in an opening state, the inner surface of the U-shaped cavity is fixedly connected with a first expansion film and a second expansion film respectively from front to back, the upper end of the U-shaped cavity is fixedly connected with a resisting block and a pressing block respectively, the top end of the resisting block is in an arc structural design, one surface of the elastic plate, which is close to the second pull tab, is provided with a groove, and the groove is matched with the resisting block.

Through adopting above-mentioned technical scheme, in order to reduce the resistance that the zipper head main part received the fixture block when moving, during operation, the user presses the briquetting, make it extrude inflation membrane two, make the inside air of U-shaped chamber to inflation membrane one move, force inflation membrane one upwards expand and promote the piece that supports along U-shaped chamber upward movement, until inside inserting the recess, the pulling tab two is at the relatively static with pulling tab one under the cooperation of resisting piece and recess this moment, thereby make the fixture block lose the resistance of supporting the piece, and move along the draw-in groove upward movement under the effect of shell fragment and break away from the contact with the zip fastener, through the cooperation of above-mentioned structure, make the user no longer receive the frictional force of fixture block and chain when pulling the zipper head main part, the smoothness of zipper head main part motion has been improved.

Preferably, the diameter of the front end of the U-shaped cavity is smaller than that of the rear end.

Through adopting above-mentioned technical scheme, in order to improve the cooperation effect of support system piece and recess, during operation, expansion film two receives the extrusion when the user extrudees press the briquetting, because U-shaped chamber rear end diameter is greater than the front end diameter, the air of compression U-shaped intracavity portion makes the deformation volume that expansion film one takes place be greater than expansion film two's compression volume to make the motion stroke that supports system piece be greater than the motion stroke of pressing the piece, and then improved the second and the first fixed effect of pull tab indirect improvement the smoothness nature of slider main part motion.

Preferably, the lower end of the upright post is fixedly connected with a bearing block, the lower end of the bearing block is fixedly connected with a bearing rod, the longitudinal section of the bearing rod is of a cross-shaped structural design, an adjusting groove is formed in the position, corresponding to the bearing block, of the lower clamping piece, the bearing block penetrates through the adjusting groove, and an adjusting mechanism is arranged at the lower end of the adjusting groove;

the adjusting mechanism comprises a bump, a rotating groove, a screwing plate and a ring groove, wherein the outer surface of the lower end of the lower clamping piece is provided with the ring groove, a certain included angle is formed between the bottom of the ring groove and the lower clamping piece, the screwing plate is arranged at the lower end of the lower clamping piece, the screwing plate is fixedly connected with the bump corresponding to the ring groove, the bump is positioned in the ring groove, the rotating groove is formed in the screwing plate, and the receiving rod is positioned in the rotating groove and is correspondingly matched with the rotating groove.

Through adopting above-mentioned technical scheme, in order to solve the corner of zipper head main part and cloth and block and make the unable removal of zipper head main part, during operation, closely laminate between clamping piece and the stand under the initial state, thereby can accomplish the interlock to the zip fastener, when the clamping piece was gone into to the cloth card, the user rotated and twisted the board, compel to twist the lug on board surface along the annular motion, because annular and lower clamping piece exist certain contained angle, thereby appear the clearance between clamping piece and the stand down, and then the person of facilitating the use takes out the cloth from between the zipper head main part, avoided the condition that the zipper head that zipper head main part and cloth blocked the appearance can't normal use.

Preferably, the regulating groove and the receiving block are of rectangular structural design and are correspondingly matched with each other, the number of the annular grooves is two groups, the annular grooves are distributed at equal intervals by taking the middle point of the diagonal line of the regulating groove as the center, the two ends inside the annular grooves are provided with limiting holes and are of integrated structural design with the annular grooves, and the diameters of the limiting holes are slightly smaller than those of the protruding blocks.

Through adopting above-mentioned technical scheme, during operation, adjusting groove and accepting piece mutually correspond the matching and make down the clamping piece and can only follow accepting piece up-and-down motion, and two sets of annular can make effectively to twist down the clamping piece of board fine and resist and twist the rotation range of board through spacing hole restriction, when twisting board drive lug motion to the spacing hole of annular highest department inside, twist down and form interference fit between board and the clamping piece down and make down the clamping piece closely laminating of stand.

Compared with the prior art, the invention has the beneficial effects that:

1. by adding the anti-theft mechanism in the device, a user loses the resistance effect of the clamping block on the zipper when the zipper needs to be opened, and when the user releases hands, the clamping block resets to clamp the zipper again, so that the self-locking anti-theft effect is achieved;

2. through adding the connecting rod of the connecting block and the adjusting mechanism in the device, a user rotates the screwing plate to generate a gap between the lower clamping piece and the upright post, so that cloth clamped in the zipper head main body can be taken down.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a structural view of the anti-theft mechanism of the present invention;

FIG. 3 is a combined view of the view at A in FIG. 2 in accordance with the present invention;

FIG. 4 is a structural view of a first pull tab of the present invention;

FIG. 5 is a structural view of the slider body of the present invention;

FIG. 6 is an enlarged view of FIG. 5B in accordance with the present invention;

FIG. 7 is a combination view of a first pull tab and a second pull tab of the present invention;

FIG. 8 is a structural view of the lower clip of the present invention;

fig. 9 is a structural view of the adjusting mechanism of the present invention.

Reference numerals illustrate:

1. a slider body; 11. a stop block; 111. a circular groove; 12. an upper clamping piece; 13. a column; 14. a lower clamping piece; 2. an adjusting mechanism; 21. a bump; 22. a rotary groove; 23. a receiving rod; 24. a receiving block; 25. twisting the plate; 26. an adjustment tank; 27. a ring groove; 3. an anti-theft mechanism; 31. a pull tab I; 311. a cavity; 312. a spring plate; 313. a displacement groove; 314. abutting blocks; 315. a ring block; 316. a clamping groove; 317. a spring plate; 318. a clamping block; 32. a second pull tab; 321. a U-shaped cavity; 322. an expansion film II; 323. pressing the blocks; 324. an expansion membrane I; 325. a pressing block; 326. a groove; 327. and a stress plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 9, the present invention provides a technical solution:

the utility model provides a zipper head, includes zipper head main part 1, dog 11, goes up clamping piece 12, stand 13, lower clamping piece 14, dog 11 lower extreme fixed connection goes up clamping piece 12, and goes up clamping piece 12 lower extreme fixed connection stand 13, stand 13 lower extreme swing joint lower clamping piece 14, the round hole has been seted up in the middle of the dog 11, and round hole annular internal surface has seted up circular slot 111, circular slot 111 inside swing joint has ring block 315, and fixedly connected with pull tab one 31 in the middle of the ring block 315, the inside anti-theft mechanism 3 that is provided with of zipper head main part 1;

the anti-theft mechanism 3 comprises a displacement groove 313, a second pull piece 32, a cavity 311, spring plates 312, a stress plate 327, a supporting block 314, a clamping groove 316 and a clamping block 318, wherein the displacement groove 313 is formed in the first pull piece 31, the second pull piece 32 is movably connected in the displacement groove 313, the cavity 311 is formed in the middle of the first pull piece 31, the cavity 311 penetrates through the first pull piece 31, the spring plates 312 are fixedly connected to the rear end of the inner surface of the cavity 311, the number of the displacement grooves 313 is two, the displacement grooves 313 are L-shaped, two ends of the displacement grooves are open, one side, far away from the ring blocks 315, of the second pull piece 32 is fixedly connected with the supporting block 314, the transverse cross section of the whole second pull piece 32 is of a mountain-shaped structure, the outer surface of the front end of the second pull piece 32 is fixedly connected with the stress plate 327, the stress plate 327 is positioned in the cavity 311, the longitudinal cross section of the second pull piece is of a triangular structure, the stress plate 327 corresponds to the spring plates 312, the clamping groove 316 is formed in the position corresponding to the position of the upper clamping piece 12 and the supporting block 314, the annular inner surface of the clamping groove 316 is fixedly connected with the annular surface 317, the clamping block 318 is movably connected with the inner surface of the clamping block 318, and the clamping block 318 is movably connected with the clamping block 316 in the position penetrates through the clamping block 316.

By adopting the above technical scheme, the conventional slider does not have a self-locking function, when the conventional slider is operated, the spring plate 312 presses the force-bearing plate 327, the second slider 32 is forced to move forward along the displacement groove 313 until the abutting block 314 contacts the upper end of the clamping block 318 inside the clamping groove 316 and resists the clamping block 318, the clamping block 318 is forced to move downward along the clamping groove 316 to resist the gap of the zipper, the center of the abutting block 314 is parallel to the ring block 315, when a user needs to open the zipper, the second slider 32 is pulled to move backward along the displacement groove 313, the force-bearing plate 327 presses the spring plate 312, the spring plate 312 is forced to deform, and meanwhile, the abutting block 314 moves synchronously with the second slider 32, so that the abutting block 318 loses resistance to the clamping block 318, the clamping block 318 moves upward along the clamping groove 316 under the action of the spring plate 317, at the moment, the slider body 1 can complete movement and open the zipper, the hinging of the elastic plates 318 and 317 are mutually limited so that the slider cannot fall, when the user stops pulling, the second slider 32 is pulled down the spring plate 312, the spring plate 312 is reset again, and the slider 317 cannot be easily opened by the slider body, and the elastic force of the slider cannot be easily opened by the slider body 317.

As an embodiment of the present invention, as shown in fig. 4 and 7, the number of the displacement slots 313 is two, the length of the right side is shorter than that of the left side, the displacement slots 313 and the second pull tab 32 are correspondingly matched, the number of the clamping slots 316 and the clamping blocks 318 is two, and the clamping slots and the clamping blocks are respectively positioned on the right side and the left side of the upper clamping piece 12 and are contacted with the corresponding abutting blocks 314.

Through adopting above-mentioned technical scheme, in order to improve the self-locking effect of slider, during operation, fixture block 318 is corresponding with the gap above draw-in groove 316 and the zip fastener chain, and support piece 314 and fixture block 318 simultaneously are corresponding, and when the user released two pull-tab 32, two sets of support pieces 314 can support two sets of fixture blocks 318 respectively under the effect of springboard 312 to further improve the self-locking theftproof effect of slider main part 1.

As an embodiment of the present invention, as shown in fig. 5, a U-shaped cavity 321 is formed in the second pull tab 32, front and rear ends of the U-shaped cavity 321 are in an open state, an expansion film one 324 and an expansion film two 322 are fixedly connected to the inner surface of the U-shaped cavity 321 from front to rear, and a resisting block 325 and a pressing block 323 are fixedly connected to the upper end of the U-shaped cavity, the top end of the resisting block 325 is designed as an arc structure, a groove 326 is formed on a surface of the spring plate 312, which is close to the second pull tab 32, and the groove 326 and the resisting block 325 are mutually matched.

By adopting the above technical scheme, in order to reduce the resistance of the clamping block 318 when the zipper head main body 1 moves, during operation, a user presses the pressing block 323 to press the expansion film two 322, so that the air in the U-shaped cavity 321 moves towards the expansion film one 324, the expansion film one 324 is forced to expand upwards and push the abutting block 325 to move upwards along the U-shaped cavity 321 until the abutting block 325 is inserted into the groove 326, at this time, the second pulling piece 32 is relatively static with the first pulling piece 31 under the mutual matching of the abutting block 325 and the groove 326, so that the clamping block 318 loses the abutting of the abutting block 314, and moves upwards along the clamping groove 316 under the action of the elastic sheet 317 to be separated from contact with a zipper, and through the mutual matching of the structure, the user is not subjected to the friction force of the clamping block 318 and the chain when pulling the zipper head main body 1, and the movement fluency of the zipper head main body 1 is improved.

As an embodiment of the present invention, as shown in fig. 5, the U-shaped cavity 321 has a smaller diameter at the front end than at the rear end.

Through adopting above-mentioned technical scheme, in order to improve the cooperation effect of supporting the piece 325 and recess 326, during operation, expansion membrane two 322 receive the extrusion when the user extrudees pressing piece 323, because U-shaped chamber 321 rear end diameter is greater than the front end diameter, the air of compression U-shaped chamber 321 inside makes the deformation volume that expansion membrane one 324 took place greater than expansion membrane two 322's compression volume to make the motion stroke that supports the piece 325 be greater than the motion stroke of pressing piece 323, and then improved the fixed effect of pulling-on piece two 32 and pulling-on piece one 31 indirect improvement the smoothness of slider main part 1 motion.

As an embodiment of the present invention, as shown in fig. 5 and fig. 6, the lower end of the upright post 13 is fixedly connected with a receiving block 24, the lower end of the receiving block 24 is fixedly connected with a receiving rod 23, the longitudinal section of the receiving rod 23 is in a cross-shaped structure, an adjusting groove 26 is formed at a position corresponding to the lower clamping piece 14 and the receiving block 24, the receiving block 24 penetrates through the adjusting groove 26, and an adjusting mechanism 2 is disposed at the lower end of the adjusting groove 26;

the adjusting mechanism 2 comprises a protruding block 21, a rotary groove 22, a screwing plate 25 and a ring groove 27, the outer surface of the lower end of the lower clamping piece 14 is provided with the ring groove 27, a certain included angle is formed between the bottom of the ring groove 27 and the lower clamping piece 14, the screwing plate 25 is arranged at the lower end of the lower clamping piece 14, the screwing plate 25 is fixedly connected with the protruding block 21 at the corresponding position of the ring groove 27, the protruding block 21 is positioned inside the ring groove 27, the rotary groove 22 is formed inside the screwing plate 25, and the receiving rod 23 is movably connected inside the rotary groove 22 and is correspondingly matched with the rotary groove 22.

Through adopting above-mentioned technical scheme, in order to solve the corner of zipper head main part 1 and cloth and block and make the unable removal of zipper head main part 1, during operation, closely laminate between clamping piece 14 and the stand 13 under the initial condition, thereby can accomplish the interlock to the zip fastener, when the cloth card was gone into down clamping piece 14, the user rotated and is twisted board 25, force to twist the lug 21 on board 25 surface and follow annular 27 motion, because annular 27 and lower clamping piece 14 have certain contained angle, thereby make appear the clearance between clamping piece 14 and the stand 13 down, and then the person of facilitating the use takes out the cloth from between the zipper head main part 1, avoided the condition that the zipper head that zipper head main part 1 and cloth blocked appearance can't normal use.

As an embodiment of the present invention, as shown in fig. 6 and 9, the adjusting grooves 26 and the receiving blocks 24 are rectangular in structural design and are correspondingly matched with each other, the number of the ring grooves 27 is two, the ring grooves are distributed in an annular equidistant manner with the middle point of the diagonal line of the adjusting grooves 26 as the center, both ends of the inside of the ring grooves 27 are provided with limiting holes, the limiting holes and the ring grooves 27 are integrated, and the diameter of the limiting holes is slightly smaller than that of the protruding blocks 21.

Through adopting above-mentioned technical scheme, during operation, adjustment tank 26 and the corresponding matching of accepting piece 24 each other make down clamping piece 14 only can follow accepting piece 24 and reciprocate, two sets of annular 27 can make effectively that twist board 25 fine to down clamping piece 14 resist and through spacing hole restriction twist board 25's rotation range, when twist board 25 drives lug 21 and moves to the spacing hole inside of annular 27 highest department, form interference fit between twist board 25 and the lower clamping piece 14 and make down clamping piece 14 and stand 13 closely laminate, and be connected with the spring between annular 27 and the twist board, the spring can drive automatically and twist the board and reset, and make and twist laminating between board upper surface and the lower clamping piece.

Working principle: in the initial state, the spring plate 312 presses the force-bearing plate 327 to force the second pull-tab 32 to move forward along the displacement slot 313 until the abutting block 314 contacts the upper end of the clamping block 318 in the clamping slot 316 and resists the clamping block 318, the clamping block 318 is forced to move downwards along the clamping slot 316 to resist the gap of the zipper, the center of the abutting block 314 is parallel to the ring block 315, when a user needs to open the zipper, the second pull-tab 32 is pulled to move backwards along the displacement slot 313, the force-bearing plate 327 presses the spring plate 312 to force the spring plate 312 to deform, meanwhile, the abutting block 314 moves synchronously with the second pull-tab 32 to lose the resistance to the clamping block 318, the clamping block 318 moves upwards along the clamping slot 316 under the action of the elastic sheet 317 to lose the resistance to the zipper, at the moment, the zipper head main body 1 can complete the movement and open the zipper, the hinging of the clamping block 318 and the elastic sheet 317 are mutually limited so as not to drop, when the user stops pulling, the second pull tab 32 is reset under the extrusion of the spring plate 312, the clamping block 318 is clamped into the gap of the zipper strip again, so that the zipper head main body 1 is locked, the elastic force of the spring plate 312 is larger than that of the elastic sheet 317, the clamping block 318 corresponds to the clamping groove 316 and the gap above the zipper strip, meanwhile, the abutting blocks 314 correspond to the clamping blocks 318, when the user releases the second pull tab 32, the two abutting blocks 314 can respectively abut against the two groups of clamping blocks 318 under the action of the spring plate 312, thereby further improving the self-locking effect of the zipper head main body 1, the user presses the pressing block 323 to extrude the expansion film 322, the air inside the U-shaped cavity 321 moves towards the expansion film 324, the expansion film 324 is forced to expand upwards and push the abutting block 325 to move upwards along the U-shaped cavity 321 until the inside the groove 326 is inserted, and the second pull tab 32 is relatively static with the first pull tab 31 under the mutual cooperation of the abutting block 325 and the groove 326, so that the clamping block 318 loses the resistance of the resisting block 314 and moves upwards along the clamping groove 316 to be separated from contact with the zipper under the action of the elastic sheet 317, through the mutual cooperation of the structures, a user is not subjected to the friction force of the clamping block 318 and the chain when pulling the zipper head main body 1, the smoothness of the zipper head main body 1 is improved, when the user presses the pressing block 323, the expansion film two 322 is pressed, as the diameter of the rear end of the U-shaped cavity 321 is larger than the diameter of the front end, the air in the U-shaped cavity 321 is compressed to enable the deformation amount of the expansion film one 324 to be larger than the compression amount of the expansion film two 322, so that the movement stroke of the resisting block 325 is larger than the movement stroke of the pressing block 323, the fixing effect of the pulling piece two 32 and the pulling piece one 31 is improved, the smoothness of the movement of the zipper head main body 1 is indirectly improved, the clamping piece 14 and the upright post 13 are tightly adhered in the initial state, therefore, the zipper can be meshed, when the cloth is clamped into the lower clamping piece 14, a user rotates the screwing plate 25, the lug 21 on the surface of the screwing plate 25 is forced to move along the annular groove 27, a certain included angle exists between the annular groove 27 and the lower clamping piece 14, so that a gap is formed between the lower clamping piece 14 and the upright post 13, the user can conveniently take out the cloth from the zipper head main body 1, the situation that the zipper head cannot be normally used due to clamping of the zipper head main body 1 and the cloth is avoided, the adjusting groove 26 and the receiving block 24 are correspondingly matched, the lower clamping piece 14 can only move up and down along the receiving block 24, the two groups of annular grooves 27 can effectively enable the screwing plate 25 to well resist the lower clamping piece 14 and limit the rotation range of the screwing plate 25 through the limiting holes, when the screwing plate 25 drives the lug 21 to move into the limiting hole at the highest position of the annular groove 27, the screw plate 25 forms an interference fit with the lower clip 14 so that the lower clip 14 is in close engagement with the upright 13.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (5)

1. The utility model provides a zipper head, includes zipper head main part (1), dog (11), goes up clamping piece (12), stand (13), lower clamping piece (14), its characterized in that: the anti-theft zipper comprises a zipper head main body (1), and is characterized in that the lower end of a stop block (11) is fixedly connected with an upper clamping piece (12), the lower end of the upper clamping piece (12) is fixedly connected with a stand column (13), the lower end of the stand column (13) is movably connected with a lower clamping piece (14), a round hole is formed in the middle of the stop block (11), a round groove (111) is formed in the annular inner surface of the round hole, a ring block (315) is movably connected in the round groove (111), a first pull tab (31) is fixedly connected in the middle of the ring block (315), and an anti-theft mechanism (3) is arranged in the zipper head main body (1);

the anti-theft mechanism (3) comprises a displacement groove (313), a second pull sheet (32), a cavity (311), a spring plate (312), a stress plate (327), a propping block (314), a clamping groove (316) and a clamping block (318), wherein the displacement groove (313) is formed in the first pull sheet (31), the second pull sheet (32) is movably connected in the displacement groove (313), the cavity (311) is formed in the middle of the first pull sheet (31), the cavity (311) penetrates through the first pull sheet (31), the spring plate (312) is fixedly connected to the rear end of the inner surface of the cavity (311), the number of the displacement grooves (313) is two, the displacement grooves (313) are L-shaped, two ends of the displacement grooves are in an opening state, one side, far away from the annular block (315), of the second pull sheet (32) is fixedly connected with the propping block (314), the whole transverse section of the second pull sheet (32) is of a mountain-shaped structure, the outer surface of the front end of the second pull sheet (32) is fixedly connected with the stress plate (327), the stress plate (327) is positioned in the cavity (311), the longitudinal section of the cavity (311) is of a triangle structure, the longitudinal section of the longitudinal section is connected with the spring plate (327) corresponding to the clamping block (316), the corresponding to the clamping block (316) is fixedly connected with the elastic block (316), the inside of the elastic piece is movably connected with a clamping block (318), and the clamping block (318) penetrates through the clamping groove (316) and is hinged with the elastic piece (317);

the novel plastic pulling-on piece is characterized in that a U-shaped cavity (321) is formed in the second pulling-on piece (32), the front end and the rear end of the U-shaped cavity (321) are in an opening state, an expansion film I (324) and an expansion film II (322) are fixedly connected to the inner surface of the U-shaped cavity (321) from front to back, a resisting block (325) and a pressing block (323) are fixedly connected to the upper end of the expansion film I and the upper end of the expansion film II respectively, the top end of the resisting block (325) is of an arc-shaped structural design, a groove (326) is formed in one surface, close to the second pulling-on piece (32), of the spring plate (312), and the groove (326) is matched with the resisting block (325).

2. A slider as claimed in claim 1, wherein: the number of the displacement grooves (313) is two, the length of the right side of the displacement grooves is shorter than that of the left side of the displacement grooves, the displacement grooves (313) are correspondingly matched with the second pull-tab (32), the number of the clamping grooves (316) and the clamping blocks (318) is two, and the two clamping grooves are respectively positioned on the right side and the left side of the upper clamping piece (12) and are in contact with the corresponding abutting blocks (314).

3. A slider as claimed in claim 1, wherein: the diameter of the front end of the U-shaped cavity (321) is smaller than that of the rear end.

4. A slider as claimed in claim 1, wherein: the stand (13) lower extreme fixedly connected with holds piece (24), and holds piece (24) lower extreme fixedly connected with and holds pole (23), it is cross structural design to hold pole (23) longitudinal section, down clamping piece (14) and hold piece (24) and correspond the position and seted up adjustment tank (26), and hold piece (24) and run through adjustment tank (26), adjustment tank (26) lower extreme is provided with adjustment mechanism (2), adjustment mechanism (2) include lug (21), change groove (22), twist board (25), annular (27) are seted up to clamping piece (14) lower extreme surface down, form certain contained angle between annular (27) bottom and the clamping piece (14) down, and the clamping piece (14) lower extreme sets up twists board (25), twists board (25) and annular (27) correspond position fixed connection lug (21), lug (21) are located annular (27) inside, twist board (25) inside offer change groove (22), and pole (23) are located change groove (22) inside and correspond each other.

5. A slider as claimed in claim 1, wherein: the adjusting grooves (26) are of rectangular structural design and are correspondingly matched with the bearing blocks (24), the number of the annular grooves (27) is two, the annular grooves are distributed at equal intervals by taking the middle points of diagonal lines of the adjusting grooves (26) as centers, limiting holes are formed in two ends of the inner portion of each annular groove (27) and are integrated with the annular grooves (27), and the diameters of the limiting holes are slightly smaller than those of the protruding blocks (21).

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