Anti-theft self-locking zipper
By optimizing the zipper structure and designing the cooperation between the self-locking components and the locking teeth and holes, the problem of the zipper being easily opened was solved, the anti-theft function of the zipper was realized, and the user experience was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DECHENG ZIPPER (DONGGUAN) CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-06-16
AI Technical Summary
The existing zipper pulls have tabs, which make the zipper easy to open after it is closed, posing a risk of theft.
By optimizing the zipper structure and designing a self-locking component, including a limit rod, spring, slider, and housing, the zipper head and zipper belt are locked by utilizing the cooperation of the teeth and holes, combined with the socket and locking holes of the self-locking component, thus preventing the zipper piece from moving.
It effectively prevents the zipper from being opened, improving the user experience. With the help of a lock, the position of the zipper piece is further locked, resulting in a significant anti-theft effect.
Smart Images
Figure CN224357145U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of zipper manufacturing, specifically relating to an anti-theft self-locking zipper. Background Technology
[0002] A zipper is a connector that uses a series of teeth to join or separate items. It is now widely used in clothing, bags, tents, and other products. As the use of zippers becomes more widespread, the functional requirements for zippers are also increasing, such as for zippers in clothing.
[0003] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems:
[0004] The existing zipper head has a pull tab, which can be pulled up and down by lifting the pull tab. The zipper is easy to open after being closed, making it easy to be stolen. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an anti-theft self-locking zipper. By optimizing the zipper structure, the problem of the zipper being easily opened can be solved, thus improving the user experience.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An anti-theft self-locking zipper includes a chain belt with chain teeth; a zipper head connected to the chain belt via the chain teeth for engaging or disengaging the chain teeth of adjacent chain belts; the zipper head includes a zipper base and a zipper plate, the zipper base having a connecting hole, the zipper plate being rotatably connected to the zipper base through the connecting hole, the zipper plate having locking teeth, and the zipper base having locking holes that engage with the locking teeth; when the zipper plate is flipped, the locking teeth pass through the locking holes and engage with the chain teeth; the zipper base also has a self-locking component, and the zipper plate has a through-hole along its thickness direction for fitting the self-locking component. Externally, the self-locking assembly includes a limiting rod, a spring, a slider, and a housing. One end of the limiting rod is disposed outside the housing to limit the engagement hole. The other end of the limiting rod, the slider, and the spring are disposed inside the housing. The spring and the limiting rod are fixedly connected by the slider, which is located between the slider and the inner wall of the housing. A strip-shaped hole is provided at the top of the housing. The slider has a protrusion that mates with the strip-shaped hole. The protrusion passes through the strip-shaped hole and protrudes outside the housing. The protrusion drives the slider to move along the strip-shaped hole to compress the spring. The protrusion also has a lock hole for engaging with a lock.
[0008] In some possible implementations, the self-locking assembly and the connecting hole are mounted on the same side of the zipper seat.
[0009] In some possible implementations, the depth of the socket is less than the height of the self-locking assembly.
[0010] In some possible implementations, the housing includes a top plate, a bottom plate, and four side plates, the top plate, the bottom plate, and the four side plates forming a frame structure, the strip-shaped hole being located on the top plate, and one of the side plates having a through hole that mates with the limiting rod.
[0011] In some possible implementations, the end of the limiting rod located outside the housing is provided with a bevel.
[0012] One of the above technical solutions has the following beneficial effects:
[0013] This invention optimizes the zipper structure. When the zipper head is pulled to a preset position, the zipper piece flips around the connecting hole, allowing the locking teeth to pass through and engage with the interlocking chain teeth inside the zipper seat, thus locking the position of the zipper head. The zipper piece's socket, by fitting over the outside of the self-locking assembly, further secures the locking teeth, fixing the zipper piece's position and thus the relative position of the zipper head and the chain. A protrusion drives a slider, compressing a spring and causing the limiting rod to move inwards, facilitating the socket fitting over the outside of the self-locking assembly. After the socket is fitted onto the outside of the self-locking component, the spring returns to its supporting force on the limiting rod, causing one end of the limiting rod to move outside the outer shell. This limits the socket fitted onto the outside of the self-locking component, preventing the zipper piece from moving. In other words, it prevents the slippage between the zipper piece's locking teeth and the chain teeth, thus locking the relative position of the zipper head and the chain. This solves the problem of the zipper being easily opened and helps improve the user experience. At the same time, the protrusion is designed with a locking hole, which can cooperate with the lock to prevent the zipper piece from moving and lock the position of the zipper piece. Attached Figure Description
[0014] The features, advantages and technical effects of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a cross-sectional snap-fit diagram of the present invention.
[0017] Figure 3 This is a cross-sectional schematic diagram of the self-locking component of this utility model.
[0018] Figure 4 This is a schematic diagram of the zipper piece of this utility model before it is flipped over.
[0019] The reference numerals in the attached figures are explained as follows:
[0020] 1-Zipper base; 10-Snap-in holes;
[0021] 2-Zipper tab; 20-Tips; 21-Socket hole;
[0022] 3-Connecting hole;
[0023] 5-Self-locking component; 51-Limit rod; 52-Spring; 53-Slider; 54-Housing shell;
[0024] 6-Strip-shaped hole;
[0025] 7-Protrusion. Detailed Implementation
[0026] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.
[0027] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] The present invention will be further described in detail below with reference to the accompanying drawings, but this is not intended to limit the present invention.
[0030] Example 1
[0031] Because existing zipper heads have pull tabs, the zipper can be pulled up and down by simply lifting the pull tab. The zipper is easy to open after being closed, making it easy to steal.
[0032] like Figures 1-4As shown, the anti-theft self-locking zipper of this utility model includes a chain belt with chain teeth; a zipper head connected to the chain belt through the chain teeth for engaging or disengaging the chain teeth of two adjacent chain belts; the zipper head includes a zipper base 1 and a zipper piece 2, the zipper base 1 having a connecting hole 3, the zipper piece 2 being rotatably connected to the zipper base 1 through the connecting hole 3, the zipper piece 2 having a locking tooth 20, and the zipper base 1 having a locking hole 10 that engages with the locking tooth 20; when the zipper piece 2 is flipped, the locking tooth 20 passes through the locking hole 10 and engages with the chain teeth. When the zipper head is pulled up, the chain teeth engage with each other. When the zipper head is pulled down, and the zipper plate 2 is flipped around the connecting hole 3 when the zipper head is pulled to the preset position, the locking teeth 20 can pass through the locking holes 10 and engage with the interlocking chain teeth inside the zipper seat 1 to lock the position of the zipper head. The locking teeth 20 are trapezoidal in shape, and the side of the locking teeth 20 that contacts the chain teeth has an arc-shaped structure that fits the shape of the chain teeth surface, which helps to increase the area between the locking teeth 20 and the chain teeth and play the role of locking the chain teeth. In some embodiments, the side of the locking teeth 20 that contacts the chain teeth is a frosted surface, which helps to increase the friction between the locking teeth 20 and the chain teeth. In other embodiments, the zipper seat 1 includes two parallel upper and lower covers, which are connected by a connecting block. The connecting hole 3 is an arch-shaped structure, which is vertically set on the surface of the upper cover. One end of the zipper piece 2 is provided with a loop-shaped connecting part, which can be fitted onto the connecting hole 3 to realize the connection between the zipper piece 2 and the zipper seat 1, allowing the zipper piece 2 to move up and down within a certain range in the height direction of the connecting hole 3.
[0033] The zipper seat 1 of this utility model is also provided with a self-locking component 5. The zipper piece 2 has a through hole 21 along its thickness direction. The through hole 21 is used to fit the outside of the self-locking component 5. The self-locking component 5 includes a limiting rod 51, a spring 52, a slider 53 and a housing 54. One end of the limiting rod 51 is located outside the housing 54 and is used to limit the through hole 21. The other end of the limiting rod 51, the slider 53 and the spring 52 are located inside the housing 54. The spring 52 and the limiting rod 51 are fixedly connected by the slider 53. The spring 52 is located between the slider 53 and the inner wall of the housing 54. The top of the housing 54 is provided with a strip hole 6. The slider 53 is provided with a protrusion 7 that cooperates with the strip hole 6. The protrusion 7 passes through the strip hole 6 and protrudes outside the housing 54. The protrusion 7 is used to drive the slider 53 to move along the strip hole 6 to compress the spring 52. The protrusion 7 is provided with a lock hole for cooperating with a lock. The zipper piece 2 of this utility model has a socket 21 that fits onto the outside of the self-locking assembly 5, thereby locking the chain teeth with the locking teeth 20, fixing the position of the zipper piece 2, and fixing the relative position of the zipper head and the chain. The protrusion 7 drives the slider 53, compressing the spring 52, causing the limiting rod 51 to move inward into the outer shell 54. The outside of the self-locking assembly 5 is unobstructed, facilitating the fitting of the socket 21 onto the outside of the self-locking assembly 5. After the socket 21 is fitted onto the outside of the self-locking assembly 5, the spring 52 returns to its original position, restoring its position on the limiting rod. The supporting force of 51 drives one end of the limiting rod 51 to move outside the outer shell 54, blocking the socket 21 on the outside of the self-locking component 5, thereby limiting the socket 21 on the outside of the self-locking component 5 and preventing the zipper piece 2 from moving. This prevents the sliding between the zipper piece 2's locking teeth 20 and the chain teeth, thus locking the relative position of the zipper head and the chain, solving the problem of the zipper being easily opened, and helping to improve the user experience. At the same time, the protrusion 7 is designed with a locking hole, which can cooperate with the lock to prevent the zipper piece 2 from moving and lock the position of the zipper piece 2.
[0034] It should be noted that the shape of the slider 53 matches the shape of the cross-section of the inner cavity of the outer shell. One side of the slider 53 is connected to the limiting rod 51, and the other side of the slider 53 is connected to the spring 52. The slider 53 can move inside the outer shell. When the spring 52 is compressed, the slider 53 moves away from the socket 21, and the limiting rod 51 does not limit the socket 21. The zipper piece 2 can move up and down or flip. When the spring 52 returns to its original position, the slider 53 moves towards the socket 21, and the limiting rod 51 limits the socket 21, preventing the zipper piece 2 from moving up and down or flipping. In addition, the lock that cooperates with the lock hole is preferably a long padlock. The length and width of the padlock are slightly larger than the size of the socket 21 to prevent the zipper piece 2 from detaching from the self-locking assembly 5, thus playing a role in theft prevention.
[0035] In the anti-theft self-locking zipper according to this utility model, the self-locking component 5 and the connecting hole 3 are installed on the same side of the zipper base 1. Specifically, the connecting hole 3 is located on the upper side of the zipper head, and the self-locking component 5 is located on the lower side of the zipper head. The arrangement direction of the two is the same as the direction of the zipper. There is a gap between the self-locking component 5 and the connecting hole 3 to prevent them from interfering with each other during use.
[0036] In the anti-theft self-locking zipper according to this utility model, the depth of the socket 21 is less than the height of the self-locking component 5. Specifically, the socket is a through hole, the depth of the socket 21 is the same as the thickness of the zipper piece 2, and the size of the socket 21 is slightly larger than that of the self-locking component 5. It can be understood as a loop that can move from the top to the bottom of the self-locking component 5 to fit over the outside of the self-locking component 5.
[0037] The working principle of this utility model is as follows:
[0038] This invention optimizes the zipper structure. When the zipper head is pulled to a preset position, the zipper piece 2 flips around the connecting hole 3, allowing the locking teeth 20 to pass through the locking holes 10 and engage with the interlocking chain teeth inside the zipper base 1, thus locking the position of the zipper head. The sleeve hole 21 of the zipper piece 2 fits over the outside of the self-locking assembly 5, securing the locking teeth 20 and fixing the position of the zipper piece 2, thereby fixing the relative position of the zipper head and the chain. The protrusion 7 drives the slider 53, compressing the spring 52, causing the limiting rod 51 to move inwards into the outer shell 54, facilitating the sleeve hole 21 to fit over the self-locking assembly 5. After the socket 21 is fitted onto the outside of the self-locking component 5, the spring 52 returns to its original position, restoring its supporting force on the limiting rod 51. This causes one end of the limiting rod 51 to move outside the outer shell 54, thus limiting the socket 21 fitted onto the outside of the self-locking component 5 and preventing the zipper piece 2 from moving. This prevents the slippage between the zipper piece 2's locking teeth 20 and the chain teeth, locking the relative position of the zipper head and the chain, solving the problem of the zipper being easily opened, and improving the user experience. At the same time, the protrusion 7 is designed with a locking hole, which can cooperate with a lock to prevent the zipper piece 2 from moving and lock the position of the zipper piece 2.
[0039] Example 2
[0040] Unlike Embodiment 1, the outer casing 54 in this embodiment includes a top plate, a bottom plate, and four side plates, which together form a frame structure. A strip-shaped hole 6 is located on the top plate, and one of the side plates has a through hole that mates with the limiting rod 51. Specifically, the strip-shaped hole 6 is designed on the top plate to facilitate the movement of one end of the limiting rod 51 via the slider 53. Furthermore, the limiting rod 51 can pass through the through hole and be exposed outside the outer casing 54, thus blocking the external socket 21 of the self-locking assembly 5 and limiting the movement of the socket 21 fitted onto the outside of the self-locking assembly 5.
[0041] The other structures are the same as in Embodiment 1, and will not be described again here.
[0042] Example 3
[0043] Unlike Embodiment 1, in this embodiment, the limiting rod 51 has a bevel at one end located outside the outer shell 54. Specifically, the bevel faces the socket 21, and the edge of the socket 21 contacts the bevel. Through the action of the bevel, the direction of the force is changed, causing the longitudinal movement of the socket 21 to push the limiting rod 51 into the outer shell. This can be understood as the socket 21 squeezing the limiting rod 51 until the entire socket 21 is fully engaged with the outer bottom of the self-locking assembly 5. The spring 52 then resets, restoring its supporting force on the limiting rod 51, causing one end of the limiting rod 51 to move outside the outer shell 54. This limits the socket 21 outside the self-locking assembly 5, preventing the zipper piece 2 from moving, i.e., preventing the slippage between the zipper piece 2's locking teeth 20 and the chain teeth, thus locking the relative position of the zipper head and the chain.
[0044] The other structures are the same as in Embodiment 1, and will not be described again here.
[0045] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.
Claims
1. A theft-proof self-locking slide fastener characterized by comprising: The zipper head is connected to the chain belt through the chain teeth, and is used for combining or separating the chain teeth of two adjacent chain belts. The zipper head comprises a zipper base (1) and a zipper sheet (2), the zipper base (1) is provided with a connecting hole (3), the zipper sheet (2) is rotatably connected to the zipper base (1) through the connecting hole (3), the zipper sheet (2) is provided with a clamping tooth (20), the zipper base (1) is provided with a clamping hole (10) matched with the clamping tooth (20), when the zipper sheet (2) is turned over, the clamping tooth (20) is clamped with the chain tooth through the clamping hole (10). The zipper base (1) is further provided with a self-locking assembly (5), the zipper sheet (2) is provided with a sleeving hole (21) penetrating along the thickness direction, the sleeving hole (21) is used for sleeving outside the self-locking assembly (5), the self-locking assembly (5) comprises a limiting rod (51), a spring (52), a sliding block (53) and a shell (54), one end of the limiting rod (51) is arranged outside the shell (54) and is used for limiting the sleeving hole (21), the other end of the limiting rod (51), the sliding block (53) and the spring (52) are arranged inside the shell (54), the spring (52) and the limiting rod (51) are fixedly connected through the sliding block (53), and the spring (52) is arranged between the sliding block (53) and the inner wall of the shell (54). The top of the shell (54) is provided with a strip-shaped hole (6), the sliding block (53) is provided with a protruding part (7) matched with the strip-shaped hole (6), the protruding part (7) protrudes outside the shell (54) through the strip-shaped hole (6), the protruding part (7) is used for driving the sliding block (53) to move along the strip-shaped hole (6) to compress the spring (52), and the protruding part (7) is provided with a lock hole matched with a lock.
2. The anti-theft self-locking slide fastener according to claim 1, wherein: The self-locking assembly (5) and the connecting hole (3) are installed on the same side of the zipper base (1).
3. The anti-theft self-locking slide fastener according to claim 1, wherein: The depth of the sleeving hole (21) is less than the height of the self-locking assembly (5).
4. The anti-theft self-locking slide fastener according to claim 1, wherein: The shell (54) comprises a top plate, a bottom plate and four side plates, the top plate, the bottom plate and the four side plates form a frame structure, the strip-shaped hole (6) is located on the top plate, and one of the side plates is provided with a through hole matched with the limiting rod (51).
5. The anti-theft self-locking slide fastener according to claim 1, wherein: The end of the limiting rod (51) located outside the shell (54) is provided with an inclined surface.