Anti-theft zipper

Abstract

The utility model discloses a theftproof zipper, including chain belt, first pull head, second pull head and base, be provided with chain tooth on chain belt, first pull head and second pull head with the mode of interlocking or separating of the chain tooth on two chain belts slide setting on chain belt, the base is integrated into one piece structure, and the base has chain tooth passageway, and the chain tooth passageway runs through the base, the bottom of first pull head is provided with hook, and the bottom of second pull head is provided with elastic buckle, and the bottom of base is provided with unlocking surface, and the cavity hole is linked with chain tooth passageway, and the base sets on the position close to chain tooth end, and first pull head is located between second pull head and base, and the utility model has the advantages of higher assembly efficiency.

Description

Technical Field

[0001] This utility model relates to zipper technology, and in particular to an anti-theft zipper. Background Technology

[0002] Currently, the anti-theft zippers widely used in the market adopt a double-zipper interlocking structure design. The two zippers are locked together by built-in elastic buckles. The zipper also has an unlocking structure to unlock the two zippers. Chinese patent with publication number CN108813831B discloses an anti-theft zipper for bags, in which the unlocking structure consists of a separate front part and a back part. The front part and the back part are equipped with a locking structure. During installation, the locking structure of the front part and the back part needs to be manually aligned to fix them. The locking structure on the front part and the back part is small, and workers need to spend a certain amount of time aligning it, which requires a lot of manpower. In addition, the front part and the back part are not obviously different in appearance, which makes it easy to mix up materials during assembly, affecting production efficiency. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide an anti-theft zipper with higher production efficiency.

[0004] To achieve the above objectives, the solution of this utility model is: An anti-theft zipper includes a chain belt, a first zipper pull, a second zipper pull, and a base. The chain belt has teeth. The first and second zipper pulls are slidably mounted on the chain belt such that the teeth on the two chain belts can engage or disengage. The base is an integrally formed structure with a tooth channel extending through it. The bottom of the first zipper pull has a hook, and the bottom of the second zipper pull has an elastic buckle. The bottom of the base has an unlocking surface. A cavity is connected to the tooth channel. The base is positioned near the end of the teeth. The first zipper pull is located between the second zipper pull and the base. The elastic buckle is fitted onto the hook, locking the first and second zipper pulls together. When the first and second zipper pulls slide towards the base in the locked state and the elastic buckle contacts the unlocking surface, the elastic buckle moves away from the chain belt under the action of the unlocking surface and disengages from the hook, releasing the locked state of the first and second zipper pulls.

[0005] Furthermore, the base includes an upper body, a lower body, and a connecting column, the connecting column connecting the upper body and the lower body.

[0006] Furthermore, the connection point between the connecting post and the upper body is located in the center of the chain tooth channel.

[0007] Furthermore, the width of the openings at both ends of the chain tooth channel along its length is smaller than the width of the channel at its middle along its length.

[0008] Furthermore, the lower body is provided with two cavity holes, which are connected to the corresponding chain tooth channels.

[0009] Furthermore, the chain tooth channel is formed on the upper body.

[0010] Furthermore, the unlocking surface is located on the side of the base facing the first pull tab.

[0011] Furthermore, the unlocking surface is an arc-shaped bevel.

[0012] Furthermore, the two cavity holes are symmetrically arranged.

[0013] Furthermore, the base is a resin base or an aluminum alloy base.

[0014] With the above structure, the zipper proposed by this utility model has the following technical effects: the base is an integrally molded structure, which eliminates the alignment and fastening process during installation compared with the split structure. In addition, the base is provided with a tooth channel, which allows the tooth to pass through the tooth channel during installation, so that the base can slide on the chain belt to achieve installation. The overall assembly production efficiency is higher. Attached Figure Description

[0015] Figure 1 This is a side view of the base structure in an anti-theft zipper according to the present invention. Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point AA; Figure 3 This is a top view of the structure of an anti-theft zipper of the present invention when the base is installed on the chain belt; Figure 4 This is a bottom view of the structure of the anti-theft zipper of this utility model when the base is installed on the chain belt; Figure 5 This is a side view of the anti-theft zipper according to the present invention. In the diagram: 1 First zipper pull, 2nd zipper pull, 3 Base, 4 Fabric belt, 5 Chain teeth, 6 Upper body, 7 Lower body, 8 Connecting post, 9 Chain tooth channel, 10 Unlocking surface, 11. Cavity hole. Detailed Implementation

[0016] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0017] like Figure 1-5The anti-theft zipper shown includes a chain belt, a first zipper head 1, a second zipper head 2, and a base 3. The chain belt includes a pair of fabric strips 4 and chain teeth 5 disposed on the fabric strips 4. The first zipper head 1 and the second zipper head 2 slide on the chain belt. The sliding direction of the first zipper head 1 or the second zipper head 2 is defined as the length direction, and the direction perpendicular to the length direction and parallel to the chain belt is defined as the width direction.

[0018] The chain tooth 5 is a conventional chain tooth. The chain tooth 5 can be a nylon chain tooth or a plastic steel chain tooth. Preferably, in this embodiment, a nylon chain tooth is used. The chain tooth 5 is set on one side of a pair of fabric tapes 4 facing each other.

[0019] The first zipper pull 1 has a first zipper pull body and a hook set at the bottom of the first zipper pull body. The first zipper pull body has an upper plate and a lower plate. The hook is set on the lower plate of the first zipper pull body. The hook is a curved hook-shaped structure. The second zipper pull 2 ​​has a second zipper pull body and an elastic buckle set at the bottom of the second zipper pull body. The second zipper pull 2 ​​has an upper plate and a lower plate. The elastic buckle is set on the lower plate of the second zipper pull 2. The elastic buckle is an elastic structure that deforms to move closer to or away from the lower plate of the second zipper pull body under the action of external force. The first zipper pull body, the hook, the second zipper pull body, and the elastic structure all adopt the existing conventional structure corresponding to anti-theft zippers for bags on the market, and will not be further described here.

[0020] The first pull head 1 and the second pull head 2 are slidably disposed on the chain belts in such a way that the chain teeth on the two chain belts can engage or disengage with each other. The base 3 is a one-piece molded structure. Preferably, the base 3 is a resin base or an aluminum alloy base. The base 3 includes an upper body 6, a lower body 7, and a connecting post 8. The upper body 6 and the lower body 7 are arranged parallel to each other. The lower body 7, the hook, and the elastic buckle are located on the same side. The connecting post 8 connects the upper body 6 and the lower body 7. Side wings extending downward to the lower body 7 are provided on both sides of the upper body 6. A fabric seam for accommodating the fabric tape 4 is provided between the side wings and the lower body 7. The chain tooth channel 9 is located in the upper body 6. Specifically, the chain tooth channel 9 is the channel between the side wings and the connecting post 8. The connection between the connecting post 8 and the upper body 6 is located at the center of the width direction of the chain tooth channel 9. The chain tooth channel 9 penetrates the base 3. The width of the openings at both ends of the chain tooth channel in the length direction is smaller than the width of the channel in the middle of its length direction. This design makes the chain tooth channel similar to the inner cavity of the chain teeth in conventional double-closed zipper pulls on the market, so that when the base slides on the chain to the end of the chain teeth, the chain teeth 5 can remain closed.

[0021] The base 3 has an unlocking surface 10 and two cavity holes 11 at its bottom. Specifically, the two cavity holes 11 are located on the lower body 7 and are symmetrically arranged. The two cavity holes are located on both sides of the width direction at the connection between the connecting column 8 and the lower body 7. The main purpose of opening the cavity holes is that when the base 3 is integrally formed, the cavity holes allow the forming mold to extend into and extend to the upper body through the cavity holes, thereby forming the chain tooth channel 9 on the upper body 6. The cavity holes 11 are connected to the chain tooth channel 9. The unlocking surface 10 is located on the side of the base 3 facing the first slider 1. The base 3 is provided with a receiving groove for accommodating the first slider 1. There are two unlocking surfaces 10. The receiving groove is located in the center of the two unlocking surfaces 10. The unlocking surface 10 is an arc-shaped inclined surface.

[0022] The elastic buckle is sleeved on the hook to connect and lock the first pull head 1 and the second pull head 2 together. When the first pull head 1 and the second pull head 2 slide toward the base 3 in the connected and locked state and the elastic buckle comes into contact with the unlocking surface 10, the elastic buckle moves away from the chain belt under the action of the unlocking surface 10 and disengages from the hook, and the first pull head 1 and the second pull head 2 are released from the connected and locked state.

[0023] The base 3 is mounted near the end of the chain tooth 5 via a post-installation method. Specifically, the mounting method of the base 3 can refer to the conventional mounting method of the zipper pull on the chain belt. Since the base is provided with chain tooth channels, the base can be installed in the same way as a zipper pull, by passing the chain tooth 5 through the chain tooth channel 9 and the fabric belt 4 through the fabric seam. The first zipper pull 1 is located between the second zipper pull 2 ​​and the base 3. It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing these embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In addition, the terms "first", "second", etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features that are specified as "first," "second," etc., can explicitly or implicitly include one or more of the same feature.

[0024] The above embodiments and accompanying drawings are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An anti-theft zipper, characterized in that: The device includes a chain, a first zipper pull, a second zipper pull, and a base. The chain has teeth. The first and second zipper pulls are slidably mounted on the chain to engage or disengage the teeth on the two chains. The base is an integrally formed structure with a tooth channel that extends through the base. The bottom of the first zipper pull has a hook, and the bottom of the second zipper pull has an elastic buckle. The bottom of the base has an unlocking surface. The lower body has two cavity holes that communicate with the tooth channel. The base is positioned near the end of the teeth. The first zipper pull is located between the second zipper pull and the base. The elastic buckle is fitted onto the hook to lock the first and second zipper pulls together. When the first and second zipper pulls slide toward the base in the locked state and the elastic buckle contacts the unlocking surface, the elastic buckle moves away from the chain and disengages from the hook under the action of the unlocking surface, thus releasing the locked state of the first and second zipper pulls.

2. The anti-theft zipper as described in claim 1, characterized in that: The base includes an upper body, a lower body, and a connecting column, the connecting column connecting the upper body and the lower body.

3. The anti-theft zipper as described in claim 2, characterized in that: The connection point between the connecting post and the upper body is located in the center of the chain tooth channel.

4. The anti-theft zipper as described in claim 3, characterized in that: The width of the openings at both ends of the chain tooth channel along its length is smaller than the width of the channel in the middle along its length.

5. The anti-theft zipper as described in claim 3, characterized in that: The chain tooth channel is located on the upper body.

6. The anti-theft zipper as described in claim 1, characterized in that: The unlocking surface is located on the side of the base facing the first pull head.

7. The anti-theft zipper as described in claim 6, characterized in that: The unlocking surface is an arc-shaped bevel.

8. The anti-theft zipper as described in claim 1, characterized in that: The two cavity holes are symmetrically arranged.

9. An anti-theft zipper as described in any one of claims 1-8, characterized in that: The base is a resin base or an aluminum alloy base.

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