Anti-disengagement zipper
By setting up a projection in the mating structure of the latch and socket, the problem of easy disengagement of the latch is solved, and the smooth closing of the zipper on the elastic fabric is achieved, making it more convenient to use.
Patent Information
- Application Number
- CN202422158456.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-03
AI Technical Summary
When conventional zippers are used on elastic fabrics, the latch is easily disengaged from the socket, resulting in the zipper not being closed normally and inconvenient to use.
In the mating structure of the latch and the socket, a second protrusion is provided with a front and rear protrusions, and a first protrusion is provided on the front and rear protrusions of the socket. The protrusions are designed to reduce friction and prevent the latch from being disengaged by abutment.
Effectively prevent the latch from disengaging from the socket, ensuring that the zipper can be closed smoothly, making it more convenient to use.
Smart Images
Figure CN223068081U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to zipper technology, in particular to a zipper that prevents disengagement. Background Art
[0002] In daily life, zippers are mainly used to close open clothes. When in use, the bolt needs to be inserted into the socket and then the slider is pulled to close the zipper. When closing the zipper on elastic clothes such as shapewear, since there is elastic fabric on both sides of the zipper tape for sewing the shapewear, during the process of inserting the bolt into the socket of the conventional zipper, both sides of the tape where the bolt and the socket are located will be subjected to an outward tension from the elastic fabric. This tension will cause the bolt to disengage from the socket and the slider, making it impossible to complete the normal zipper closing, and it is relatively inconvenient to use. Summary of the Invention
[0003] In view of this, the purpose of the utility model is to provide a zipper that prevents disengagement and is convenient to use.
[0004] To achieve the above purpose, the solution of the utility model is as follows:
[0005] A zipper that prevents disengagement includes a first tape and a second tape. A first row of teeth is provided on the first tape, and a second row of teeth is provided on the second tape. The first tape is provided with a bolt at the end of the first row of teeth, and the second tape is provided with a socket at the end of the second row of teeth. The socket has a receiving cavity for receiving the bolt. The receiving cavity has a front side wall and a rear side wall in the thickness direction. A first protrusion is provided on the front side wall and / or the rear side wall. The bolt has a front side surface that mates with the front side wall and a rear side surface that mates with the rear side wall. A second protrusion is provided on the front side surface and / or the rear side surface. When the bolt leaves the receiving cavity, the end surface of the first protrusion close to the free end of the socket abuts against the end surface of the second protrusion away from the free end of the bolt.
[0006] Further, the second protrusion is provided at a position close to the free end of the bolt.
[0007] Further, the socket has an insertion opening for the bolt to be inserted, and the first protrusion is provided close to the insertion opening.
[0008] Further, the first protrusion is a square-shaped protrusion.
[0009] Further, the second protrusion is a strip-shaped protrusion.
[0010] Further, arc chamfers are provided on the outer peripheral end surface of the first protrusion and the outer peripheral end surface away from the second protrusion.
[0011] Further, the distance between the first protrusion and the opposite front side wall or rear side wall is greater than the thickness of the latch pin where the second protrusion is located.
[0012] With the above structure, a zipper proposed by the present utility model has the following technical effects: when the latch pin leaves the accommodating cavity, the end face of the first protrusion close to the free end of the socket abuts against the end face of the second protrusion away from the free end of the latch pin, preventing the latch pin from disengaging from the socket. After the user inserts the latch pin into the socket, they can release their hand and operate the slider to close the zipper, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a three-dimensional structural schematic diagram when the latch pin and socket of an anti-disengagement zipper of the present utility model are assembled together;
[0014] Figure 2 is a three-dimensional structural schematic diagram of a socket of an anti-disengagement zipper of the present utility model;
[0015] Figure 3 is a three-dimensional structural schematic diagram of a latch pin of an anti-disengagement zipper of the present utility model.
[0016] In the figure: 1. Latch pin, 2. Socket, 3. Accommodating cavity, 4. First protrusion, 5. Second protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.
[0018] As Figure 1 , Figure 2 and Figure 3 shown, an anti-disengagement zipper includes a first chain tape (not shown in the figure) and a second chain tape (not shown in the figure). The first chain tape is provided with a first row of chain teeth (not shown in the figure), and the second chain tape is provided with a second row of chain teeth (not shown in the figure). At the end of the first chain tape where the first row of chain teeth is located, a latch pin 1 is provided. One end of the latch pin 1 is connected to the tail section of the first row of chain teeth, and the other end of the latch pin 1 is the free end. At the end of the second chain tape where the second row of chain teeth is located, a socket 2 is provided. One end of the socket 2 is connected to the second row of chain teeth, and the other end of the socket 2 is the free end. A slider is further provided on the second chain tape. When the zipper is closed, the latch pin 1 passes through the slider and is inserted into the socket 2. The slider slides to engage the first row of chain teeth and the second row of chain teeth with each other. The first chain tape, the second chain tape, the first row of chain teeth, the second row of chain teeth, and the slider are the same as the corresponding structures of a conventional plastic-steel zipper, and will not be specifically elaborated here.
[0019] The socket 2 has a receiving cavity 3 for receiving the pin 1. The socket 2 has a socket for the pin 1 to be inserted, and the socket is the opening of the receiving cavity 3 away from the free end. The receiving cavity 3 is substantially the same as the pin structure of a conventional plastic-steel zipper. The receiving cavity 3 is generally a square cavity. The receiving cavity 3 has a front side wall and a rear side wall in the thickness direction of the socket 2, and the thickness direction is the up-and-down direction when the zipper is laid flat. A first protrusion 4 is provided on the socket 2. The first protrusion 4 can be provided on both the front side wall and the rear side wall at the same time, or the first protrusion 4 can be provided only on the front side wall or one of the front side walls. In this embodiment, at least one first protrusion 4 is provided on the front side wall or the rear side wall. The first protrusion 4 is arranged close to the socket. In this embodiment, the number of the first protrusions 4 is one. The first protrusion 4 is a square protrusion or a strip protrusion. In this embodiment, the first protrusion 4 is a square protrusion.
[0020] The pin 1 has a front side surface that cooperates with the front side wall and a rear side surface that cooperates with the rear side wall. When the pin 1 is arranged in the receiving cavity 3, the front side wall is arranged opposite to the front side surface, and the rear side wall is arranged opposite to the rear side surface.
[0021] A second protrusion 5 is provided on the front side surface or the rear side surface. The second protrusion 5 is a strip protrusion or a square protrusion. Preferably, in this embodiment, the second protrusion 5 is provided on the front side wall. The second protrusion 5 is arranged at a position of the pin 1 close to the free end. Further, the second protrusion 5 is a strip protrusion.
[0022] Arc chamfers are provided on the outer peripheral end surfaces of the first protrusion 4 and the second protrusion 5. The above arc chamfers can reduce the frictional force generated when the first protrusion 4 and the second protrusion 5 come into contact, so that the pin 1 can be inserted into the receiving cavity 3 more smoothly.
[0023] The distance between the first protrusion 4 and the opposite front side wall or rear side wall is greater than the thickness of the pin 1 where the second protrusion 5 is located. Since the position where the first protrusion 4 is located is the minimum clearance of the receiving cavity 3, the design that the distance at this position is greater than the thickness of the pin 1 where the second protrusion 5 is located enables the pin 1 to enter the receiving cavity 3 without being hindered by the socket 2 or only being subjected to a small resistance from the socket 2.
[0024] When the pin 1 leaves the receiving cavity 3, the end surface of the first protrusion 4 close to the free end abuts against the end surface of the second protrusion 5 away from the free end.
[0025] The working principle of the present utility model is explained below by taking the case where the present utility model is sewn on a bodysuit as an example. First, the user holds the plug with one hand and the socket with the other hand, and inserts the plug 1 into the receiving cavity of the socket 2. Subsequently, the user can release the hand holding the plug. Due to the certain resilience of the bodysuit, the plug 1 moves outward from the receiving cavity 3 under the action of the above-mentioned resilience. During the above process, the first protrusion 4 on the socket 2 abuts against the second protrusion 5 on the plug 1. Specifically, the end face on the side of the first protrusion 4 close to the free end of the socket 2 abuts against the end face on the side of the second protrusion 5 away from the free end of the plug 1, preventing the plug 1 from detaching from the receiving cavity 3.
[0026] It should be noted here that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.
[0027] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the art to which it pertains shall be regarded as not departing from the patent scope of the present utility model.
Claims
1. A non-disengaging zipper, characterized in that: It includes a first chain belt and a second chain belt. A first row of chain teeth is provided on the first chain belt, and a second row of chain teeth is provided on the second chain belt. A pin is provided at the end of the first chain belt where the first row of chain teeth is located, and a socket is provided at the end of the second chain belt where the second row of chain teeth is located. The socket has a receiving cavity for receiving the pin. The receiving cavity has a front side wall and a rear side wall in the thickness direction. A first protrusion is provided on the front side wall and / or the rear side wall. The pin has a front side surface that mates with the front side wall and a rear side surface that mates with the rear side wall. A second protrusion is provided on the front side surface and / or the rear side surface. When the pin leaves the receiving cavity, the end surface of the first protrusion close to the free end of the socket abuts against the end surface of the second protrusion away from the free end of the pin.
2. The anti-disengagement zipper according to claim 1, wherein: The second protrusion is provided near the free end of the pin.
3. The anti-disengagement zipper according to claim 1, characterized in that: The socket has an insertion opening for the pin to be inserted, and the first protrusion is provided near the insertion opening.
4. The anti-disconnection zipper according to claim 1, characterized in that: The first protrusion is a square protrusion or a strip-shaped protrusion.
5. The anti-disengagement zipper according to claim 1, characterized in that: The second protrusion is a strip-shaped protrusion or a square protrusion.
6. The anti-disengagement zipper according to claim 1, characterized in that: Arc chamfers are provided on the end surface of the outer periphery of the first protrusion and on the end surface of the outer periphery away from the second protrusion.
7. The anti-disengagement zipper according to claim 1, wherein: The distance between the first protrusion and the front side wall or the rear side wall opposite thereto is greater than the thickness of the pin where the second protrusion is located.