Plug-in puller assembly and zipper using same

Abstract

The utility model discloses a plug-in puller assembly and a zipper using the same. The plug-in pull head assembly comprises a first pull head and a second pull head which can be mutually clamped / separated; a first cover is arranged on the first pull head and comprises a first base body, an upper connecting plate and a lower connecting plate. The upper connecting plate and the lower connecting plate are arranged at intervals up and down to form an inserting cavity with a side opening, and the upper connecting plate is provided with a first through hole; a second cover is arranged on the second pull head and comprises a second base body and a middle connecting plate, a second through hole is formed in the middle connecting plate, a clamping block is arranged in the second through hole, and the middle connecting plate is inserted into the inserting cavity through the side opening; and the clamping block can extend into the first through hole when moving to the lower part of the first through hole, so that the first pull head and the second pull head are clamped with each other and can relatively rotate around the center line of the first through hole. The zipper comprises a first zipper belt and a second zipper belt, and the first zipper head and the second zipper head are connected to the first zipper belt and / or the second zipper belt in a sliding mode.

Description

Technical Field

[0001] This invention relates to the field of zipper-related technology, and in particular to zippers with insertable zipper pull assemblies and their applications. Background Technology

[0002] Traditional zippers consist of a pair of zipper straps and a slidable zipper pull on the straps. A pull tab is attached to the zipper pull; pulling the pull tab causes the zipper pull to slide back and forth on the zipper straps, thus engaging or disengaging the zipper straps. However, for backpacks, suitcases, or some clothing items, to improve the ease of opening and closing the zipper, a pair of opposing zipper pulls are installed on the zipper straps. Pulling the zipper pulls left or right opens or closes the zipper, but this reduces security. To improve the security of the zipper opening, a lock connects the two zipper pull tabs, but the exposed lock is unsightly. To address this, Chinese utility model patent CN219353235U discloses an anti-theft interlocking zipper pull. The zipper pull includes a first zipper pull and a second zipper pull that lock together. The first zipper pull has a locking part, and the second zipper pull has a limiting part for engaging with the locking part. When the locking part and the limiting part are engaged, the first and second zipper pulls are interlocked. As can be seen from several specific implementation schemes of this utility model, when the two zipper heads are locked, the relative movement of the two zipper heads in the extension direction of the chain is limited, and the relative rotation in the direction perpendicular to the extension direction of the chain is also limited. However, in actual use, the chain will twist with the fabric of the product. At this time, the two locked zipper heads will affect the twisting of the fabric. It can be seen that there is still room for improvement in the existing technology. Summary of the Invention

[0003] To overcome at least one of the aforementioned problems of the plug-in zipper pulls in the prior art, the present invention proposes a plug-in zipper pull assembly, comprising a first zipper pull and a second zipper pull capable of being interlocked and separated; the first zipper pull is provided with a first cover, the first cover comprising a first base and an upper connecting plate and a lower connecting plate extending to the right from the first base, the upper connecting plate and the lower connecting plate being arranged vertically at intervals to form a plug-in cavity, the plug-in cavity having a side opening on its side, and the upper connecting plate having a circular first through hole communicating vertically with the plug-in cavity; the second zipper pull is provided with a second cover, the second cover comprising a second base and an upper connecting plate extending to the right from the first base. The second base extends to the left via a central connecting plate. A second through hole is provided on the central connecting plate, and a circular locking block is provided within the second through hole. The left end of the locking block is connected to the left sidewall of the second through hole. The locking block is arranged obliquely upwards from left to right, and its right end extends above the central connecting plate. The central connecting plate can be inserted into the insertion cavity through the side opening. When the locking block moves below the first through hole, its right end can extend into the first through hole, thereby allowing the first and second pull heads to engage with each other and rotate relative to each other around the centerline of the first through hole.

[0004] The first and second zipper heads are slidably connected to the chain belt. Each of the first and second zipper heads includes a base plate, a top plate, and a connecting post connected to one end of the base plate and the top plate. A chain tooth channel is formed between the base plate and the top plate. In order to connect with the first and second covers, a connecting buckle is also provided on the base plate or the top plate.

[0005] The first cover is a component connected to the first zipper pull and can slide back and forth with the first zipper pull. The first cover includes a first base, an upper connecting plate, a lower connecting plate, and a first lower support plate mentioned below. The first base and the first lower support plate are connected in an L-shape and form the bottom wall of the first cover. In order to connect with the first zipper pull, a first buckle groove matching the connecting buckle foot is provided on the bottom wall of the first cover.

[0006] The second cover is a component connected to the second zipper head and can slide back and forth with the second zipper head. The second cover includes a second base, a middle connecting plate and a second lower support plate. The second base and the second lower support plate are connected in an L-shape to form the bottom wall of the second cover. In order to connect with the second zipper head, a buckle groove matching the connecting buckle foot is provided on the bottom wall of the second cover.

[0007] The upper connecting plate and the lower connecting plate are two plate-shaped components connected to the first base at one end. They are arranged in a basically balanced manner. The distance between the upper connecting plate and the lower connecting plate (i.e. the height of the insertion cavity) is slightly greater than the thickness of the middle connecting plate. The first through hole provided on the upper connecting plate is a hole that runs through the top and bottom. The first through hole can not only be combined with the snap-fit ​​block, but also allow the user to press the snap-fit ​​block from top to bottom, thereby separating the snap-fit ​​block from the first through hole.

[0008] The insertion cavity and side opening are defined as follows: the insertion cavity refers to the space defined by the connected upper connecting plate, lower connecting plate, and first base, and the insertion cavity can accommodate at least a portion of the middle connecting plate; the side opening refers to an open opening formed by the outer edges of the upper connecting plate, lower connecting plate, and first base, and the side opening connects the insertion cavity to the external space. Viewed from top to bottom, the maximum radial width of the side opening is not less than the maximum width of the insertion section of the middle connecting plate. In this embodiment, the side opening is also an arc arranged around the centerline of the first through hole, so the size of the side opening can be represented by the size of the central angle. The range of the central angle of the side opening of the insertion cavity is generally set to 180°~330°. The advantage of this setting is that when the middle connecting plate is inserted into the insertion cavity, the middle connecting plate can not only be inserted into the insertion cavity from different angles, but also rotate relative to the first base within a certain angle range around the centerline of the first through hole.

[0009] The connecting plate is a cantilevered plate-shaped component connected to the second base at one end. The connecting plate and the snap-fit ​​block are integrally formed, and the connecting plate, along with the snap-fit ​​block, can be inserted into the insertion cavity. Furthermore, to facilitate insertion, the left end of the connecting plate is chamfered.

[0010] The first and second pull heads are interlocked and can rotate relative to each other around the center line of the first through hole. This has the following two implications: First, the interlocking block and the first through hole are coaxially matched, and the sidewall of the interlocking block can slide relative to each other along the inner sidewall of the first through hole; Second, the opening (or central angle) of the side opening is large enough that when the middle connecting plate is inserted into the insertion cavity, there is a certain rotation space between the sidewall of the second base and the sidewall of the first base.

[0011] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows: First, by cooperating with the circular first through hole and the snap-fit ​​block, the first cover and the second cover can rotate relative to each other around the center line of the first through hole when connected, so that the two pull heads can rotate relative to each other while being interlocked, which greatly improves the relative flexibility of the pull heads; Second, by increasing the size of the side opening, the rotation range of the middle connecting plate can be further increased, and the middle connecting plate can be inserted into the insertion cavity from different angles, thereby improving the convenience of insertion; Third, the middle connecting plate is connected to the upper connecting plate through the snap-fit ​​block and the first through hole, and the two can be separated by pushing the snap-fit ​​block from the top, which is very convenient to use; Fourth, by setting the upper connecting plate and the lower connecting plate, the middle connecting plate can be limited in the vertical direction, wherein the lower connecting plate can reduce the middle connecting plate from coming out of the insertion cavity when the two pull heads rotate relative to each other in the center line direction, and can also provide support for the middle connecting plate when unlocking, thus protecting the middle connecting plate.

[0012] Because the plug-in zipper assembly has the above advantages, it can be applied to zippers. The zipper includes a first zipper belt and a second zipper belt, and also includes the plug-in zipper assembly. The first zipper and the second zipper are slidably connected to the first zipper belt and / or the second zipper belt.

[0013] Because of the above-mentioned features and advantages, this invention can be applied to plug-in zipper pull assemblies and zippers in which they are used. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the zipper structure in the axial direction using the technical solution of this invention;

[0015] Figure 2 This is a schematic diagram of the axial side structure of the plug-in pull head assembly;

[0016] Figure 3 This is a frontal view structural diagram of the plug-in pull head assembly in its assembled state;

[0017] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0018] Figure 5 This is an exploded view of the plug-in pull head assembly;

[0019] Figure 6 This is an exploded structural diagram of the first zipper pull and the first cover;

[0020] Figure 7This is a schematic diagram of the structure of the first cover from the front view;

[0021] Figure 8 This is an exploded structural diagram of the second pull tab and the second cover;

[0022] Figure 9 This is a schematic diagram of the second cover from the front view. Detailed Implementation

[0023] The following description, in conjunction with the accompanying drawings, further illustrates the structure of the plug-in zipper assembly and its application in zippers that utilize the technical solution of this invention.

[0024] Except where explicitly stated that they are equivalent or alternative implementation schemes, the various implementation details disclosed below may be selectively applied or combined in one embodiment even if they are not directly related or synergistic in terms of function.

[0025] like Figure 1 The diagram shows a zipper, which includes a pair of left-right extending first chain straps 11 and second chain straps 12, and also includes a plug-in zipper assembly. The plug-in zipper assembly includes a first zipper head 21 and a second zipper head 22 that can move closer to each other and separate from each other. The first zipper head 21 and the second zipper head 22 are slidably connected to the first chain strap 11 and / or the second chain strap 12. When the first zipper head 21 and the second zipper head 22 are engaged or separated from each other, the pair of chain straps can engage or separate.

[0026] like Figures 2-9As shown, the plug-in zipper assembly has a first cover 3 on the first zipper 21. The first cover 3 includes a first base 31 and an upper connecting plate 32 and a lower connecting plate 33 extending to the right from the first base 31. The upper connecting plate 32 and the lower connecting plate 33 are arranged vertically at intervals to form a plug-in cavity 30. The plug-in cavity 30 has a side opening 300 on its side. The upper connecting plate 32 has a circular first through hole 320 that communicates vertically with the plug-in cavity 30. The second zipper 22 has a second cover 4 on it. The second cover 4 includes a second base 41 and a middle connecting plate 42 extending to the left from the second base 41. The middle connecting plate 42 has a second through hole 320. A circular snap-fit ​​block 43 is provided in the second through hole 420. The left end of the snap-fit ​​block 43 is connected to the left side wall of the second through hole 420. The snap-fit ​​block 43 is arranged obliquely upward from left to right, and the right end of the snap-fit ​​block 43 extends above the middle connecting plate 42. The middle connecting plate 42 can be inserted into the insertion cavity 30 through the side opening 300. When the snap-fit ​​block 43 moves below the first through hole 320, the right end of the snap-fit ​​block 43 can extend into the first through hole 320, so that the first pull head 21 and the second pull head 22 can be snapped together and rotate relative to each other around the center line K of the first through hole 320.

[0027] In order to connect with the first cover 3 and the second cover 4, in this embodiment, the top plate of the first pull head 21 is provided with an upwardly protruding first connecting buckle 211, and the top plate of the second pull head 22 is also provided with an upwardly protruding second connecting buckle 221.

[0028] like Figures 4-7 As shown, the first cover 3 is a component connected to the top plate of the first zipper pull 21. The first cover 3 includes a first base 31, an upper connecting plate 32, a lower connecting plate 33, and a first lower support plate 34 (mentioned below). The lower end of the first base 31 is connected to the first lower support plate 34 in an L-shape. The lower end wall of the first base 31 and the first lower support plate 34 form the bottom wall of the first cover 3. A first groove 311 matching the first connecting buckle 211 is provided on the bottom wall. The second cover 4 is a component connected to the top plate of the second zipper pull 22. The second cover 4 includes a second base 41, a middle connecting plate 42, and a second lower support plate 44. The lower end of the second base 41 is connected to the second lower support plate 44 in an L-shape. The lower end wall of the second base 41 and the second lower support plate 44 form the bottom wall of the second cover 4. A second groove 411 matching the second connecting buckle 221 is provided on the bottom wall of the second cover 4.

[0029] The insertion cavity 30 refers to the space defined by the connected upper connecting plate 32, lower connecting plate 33, and first base 31. Correspondingly, the side edges of the upper connecting plate 32, lower connecting plate 33, and first base 31 form an open opening, i.e., the side opening 300. In this embodiment, both the upper connecting plate 32 and lower connecting plate 33 are circular with substantially equal diameters. The first base 31 is connected to the left end of the two circular plates. Viewed from above, the side opening 300 is an arc shape with an opening at the left end. This arc corresponds to a central angle β, which can be used to represent the opening size of the side opening 300. To facilitate the insertion of the middle connecting plate 42 into the insertion cavity 30 and to allow the middle connecting plate 42 to rotate relative to the upper connecting plate 32, the range of the central angle β of the side opening 300 of the insertion cavity 30 is generally set to 180°~330°. Viewed from the left and right, the side opening 300 has a certain height, which is not less than the thickness of the middle connecting plate 42, allowing the middle connecting plate 42 to enter and exit the insertion cavity 30. Furthermore, to facilitate insertion, the left end of the middle connecting plate 42 is chamfered. Additionally, by providing the upper connecting plate 32 and the lower connecting plate 33, the middle connecting plate can be limited in the vertical direction. The lower connecting plate 33 reduces the likelihood of the middle connecting plate 42 dislodging from the insertion cavity 30 when the two pull heads rotate relative to each other along the centerline K, and also provides support for the middle connecting plate 42 during unlocking, thus protecting it.

[0030] Furthermore, the first through hole 320 provided on the upper connecting plate 32 is a through hole that runs vertically through the middle connecting plate 42. The middle connecting plate 42 can be inserted into the insertion cavity 30 together with the snap-fit ​​block 43. Therefore, the first through hole 320 can not only be combined with the snap-fit ​​block 43, but also allow the user to press the snap-fit ​​block 43 from top to bottom to separate the snap-fit ​​block 43 from the first through hole 320, making assembly and disassembly very convenient.

[0031] Furthermore, viewed from top to bottom, the connecting plate 42 in this embodiment is also circular with a diameter no larger than the diameter of the insertion cavity 30. The second base 41 is connected to the right end of the connecting plate 42, and the connecting segment of the connecting plate 42 is represented by a central angle θ. When the connecting plate 42 is inserted into the insertion cavity 30, a certain rotational space is left between the sidewall of the second base 41 and the sidewall of the first base 31, i.e., θ < β. In this way, the second cover 4 can rotate relative to the first cover 3 within a certain angle range around the center line K of the first through hole 320 by means of the engagement of the snap-fit ​​block 43 with the first through hole 320, that is, the first pull head 21 and the second pull head 22 are snapped together and can rotate relative to each other around the center line K of the first through hole 320. The advantage of this design is that it allows the two pull heads to rotate relatively flexibly around the center line K of the first through hole 320 when the chain bends, greatly improving the overall bending angle of the product. In addition, by setting a side opening 300 with a larger central angle, not only can the bending angle be increased, but the middle connecting plate 42 can also be inserted into the insertion cavity 30 from different angles, thereby improving the convenience of insertion.

[0032] Furthermore, when the middle connecting plate 42 is inserted into the insertion cavity 30 through the side opening 300, a clearance space is provided below the locking block 43. This clearance space provides sufficient space for the locking block 43 to swing into or out of the first through hole 320. The clearance space can be formed in two specific ways: First, the locking block 43 is an inclined plate-like structure, and the lower wall surface of the locking block 43 is higher than the bottom surface of the middle connecting plate 42, thus forming a clearance space below the locking block 43. Second, the locking block 43 itself has an approximately wedge-shaped structure, with the top surface of the locking block 43 inclined and the bottom surface flush with the bottom surface of the middle connecting plate 42, but a groove-shaped clearance space with a width greater than the diameter of the locking block 43 is provided on the lower connecting plate 33.

[0033] Furthermore, for aesthetic purposes and to reduce misoperation, when the right end of the snap-fit ​​block 43 extends into the first through hole 320, the height of the right end of the snap-fit ​​block 43 extending upward does not exceed the top surface of the upper connecting plate 32.

[0034] Furthermore, the second cover 4 also includes a second lower support plate 44 extending to the left from the second base 41. The second lower support plate 44 is spaced apart below the middle connecting plate 42, forming a supporting space 400 between the middle connecting plate 42 and the second lower support plate 44. When the middle connecting plate 42 is inserted into the insertion cavity 30, at least a portion of the lower connecting plate 33 is inserted into the supporting space 400. The first cover 3 also includes a first lower support plate 34 extending to the right from the first base 31. The first lower support plate 34 is connected to the bottom of the lower connecting plate 33. When the snap-fit ​​block 43 is snapped into the first through hole 320, the first lower support plate 34 and the second lower support plate 44 abut against each other, thereby restricting the middle connecting plate 42 from continuing to move to the left. This helps to reduce the collision and excessive compression between the middle connecting plate 42 and the first base 31.

[0035] To reduce collisions between the first slider 21 and the second slider 22, the right end of the first lower support plate 34 protrudes to the right side of the first slider 21, and the left end of the second lower support plate 44 protrudes to the left side of the second slider 22. To allow the two slider heads to rotate more effectively, both the right end of the first lower support plate 34 and the left end of the second lower support plate 44 are arc-shaped.

[0036] During the insertion of the middle connecting plate 42 into the insertion cavity 30, the upper connecting plate 32 may be lifted by the protruding snap-fit ​​block 43. A groove 35 is provided at the connection between the upper connecting plate 32 and the first base 31. By providing the groove 35, the upper connecting plate 32 can more easily swing up and down, and at the same time, it reduces the problem of excessive stress concentration at the connection between the upper connecting plate 32 and the first base 31, which is beneficial to improving the service life of the product.

[0037] To facilitate the user in pulling the zipper, a further technical solution could be that the first cover 3 also includes a first handle 5, which is connected to the first base 31; and the second cover 4 also includes a second handle 6, which is connected to the second base 41.

Claims

1. A plug-in zipper assembly, comprising a first zipper and a second zipper capable of engaging and disengaging with each other; characterized in that, The first pull head is provided with a first cover, which includes a first base and an upper connecting plate and a lower connecting plate extending to the right from the first base. The upper and lower connecting plates are arranged at intervals to form a plug-in cavity. The side of the plug-in cavity is provided with a side opening. The upper connecting plate is provided with a circular first through hole that connects the plug-in cavity vertically. The second pull head is provided with a second cover, which includes a second base and a middle connecting plate extending to the left from the second base. The middle connecting plate is provided with a second through hole. A circular locking block is provided in the second through hole. The left end of the locking block is connected to the left side wall of the second through hole. The locking block is arranged inclined upward from left to right, and the right end of the locking block extends above the middle connecting plate. The middle connecting plate can be inserted into the plug-in cavity through the side opening. When the locking block moves below the first through hole, the right end of the locking block can extend into the first through hole, thereby allowing the first pull head and the second pull head to engage with each other and rotate relative to each other around the center line of the first through hole.

2. The plug-in pull head assembly according to claim 1, characterized in that, Viewed from top to bottom, the central angle of the side opening of the insertion cavity ranges from 180° to 330°.

3. The plug-in pull head assembly according to claim 1, characterized in that, The right end of the snap-fit ​​block extends upwards to a height not exceeding the top surface of the upper connecting plate.

4. The plug-in pull head assembly according to claim 3, characterized in that, When the connecting plate is inserted into the insertion cavity through the side opening, there is a clearance space below the snap-fit ​​block, which provides sufficient space for the snap-fit ​​block to swing into or out of the first through hole.

5. The plug-in pull head assembly according to claim 1, characterized in that, The second cover also includes a second lower support plate extending to the left from the second base. The second lower support plate is spaced apart on the lower side of the middle connecting plate, and a supporting space is formed between the middle connecting plate and the second lower support plate. When the middle connecting plate is inserted into the insertion cavity, at least a portion of the lower connecting plate is inserted into the supporting space.

6. The plug-in pull head assembly according to claim 5, characterized in that, The first cover also includes a first lower support plate extending to the right from the first base. The first lower support plate is connected to the bottom of the lower connecting plate. When the snap-fit ​​block is snapped into the first through hole, the first lower support plate abuts against the second lower support plate, thereby restricting the middle connecting plate from continuing to move to the left.

7. The plug-in pull head assembly according to claim 6, characterized in that, The right end of the first lower support plate protrudes to the right side of the first slider, and the left end of the second lower support plate protrudes to the left side of the second slider.

8. The plug-in pull head assembly according to claim 1, characterized in that, A groove is provided at the connection between the upper connecting plate and the first base.

9. The plug-in pull head assembly according to claim 1, characterized in that, The first cover further includes a first handle, which is connected to the first base; the second cover further includes a second handle, which is connected to the second base.

10. A zipper, comprising a first zipper tape and a second zipper tape, characterized in that, It also includes the plug-in zipper assembly according to any one of claims 1 to 9, wherein the first zipper and the second zipper are slidably connected to the first chain and / or the second chain.

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