Zipper capable of preventing cloth from being clamped

Abstract

The utility model discloses a zipper capable of preventing cloth from being clamped, belongs to the technical field of zippers, and solves the problem that a puller is clamped. Comprising a zipper belt and a puller, a limiting ring is fixedly connected to the top face of the puller, a pull ring is slidably connected between the limiting ring and the puller, an elastic piece is arranged at one end of the puller, a sliding groove is formed in one end of the puller, one end of the elastic piece is fixedly connected to the side wall of the puller, the other end of the elastic piece slides in the sliding groove, and an adjusting protruding block is arranged in the sliding groove. The side wall of the adjusting protruding block is fixedly connected with the tail end of the elastic piece, and the adjusting protruding block penetrates through the pull head and is connected with the pull head in a sliding mode. According to the utility model, the elastic sheet rolled into the C shape pushes away the cloth on the two sides, the cloth is prevented from being clamped by the pull head, the polytetrafluoroethylene coating on the surface of the elastic sheet has a lubricating effect, and the abrasion between the elastic sheet and the pull head is reduced.

Description

Technical Field

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

[0002] Zippers are a common way to connect fabrics. For two pieces of fabric with long seams, zippers are more convenient than buttons or drawstrings. A typical zipper consists of two chain straps and a zipper pull. The chain straps are responsible for carrying the chain teeth and connecting them to the fabric, while the zipper pull is responsible for controlling the chain teeth to engage. However, when pulling the zipper pull, it can sometimes clamp the fabric on both sides along with the chain teeth, causing the zipper pull to get stuck.

[0003] Therefore, an anti-pinch cloth chain is proposed to solve or alleviate the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-pinch cloth chain.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-pinch zipper includes a zipper belt and a zipper pull. A limiting ring is fixedly connected to the top surface of the zipper pull. A pull ring is slidably connected between the limiting ring and the zipper pull. One end of the zipper pull is provided with a spring piece and a sliding groove. One end of the spring piece is fixedly connected to the side wall of the zipper pull, and the other end of the spring piece slides in the sliding groove. An adjusting protrusion is provided in the sliding groove. The side wall of the adjusting protrusion is fixedly connected to the end of the spring piece. The adjusting protrusion passes through the zipper pull and is slidably connected to the zipper pull.

[0007] Preferably, the pull ring includes an integrally formed pull tab and a slide rod, the slide rod being located between the limiting ring and the pull head, the top of the adjusting protrusion being located between the slide rod and the limiting ring, and the adjusting protrusion being located on the side of the slide rod near the spring piece.

[0008] Preferably, a spring is fixedly connected to the side of the adjusting protrusion away from the slide rod, and the other end of the spring is fixedly connected to the side wall of the limiting ring. The compression direction of the spring is the same as the sliding direction of the adjusting protrusion.

[0009] Preferably, the slide rod has a square cross-section, and the sidewall of the slide rod fits against the sidewall of the adjusting protrusion.

[0010] Preferably, a limiting plate is fixedly connected to the side wall of the pull head where the groove is provided, and the limiting plate is located below the spring piece.

[0011] Preferably, the surface of the spring sheet is coated with polytetrafluoroethylene.

[0012] This utility model has the following beneficial effects:

[0013] Before pulling the pull ring towards the spring, this invention first moves the adjusting protrusion, causing the spring to extend outward. The spring, rolled into a C-shape, pushes aside the fabric on both sides, preventing the zipper from clamping the fabric. The polytetrafluoroethylene coating on the surface of the spring provides lubrication, reducing wear between the spring and the zipper. When the slide bar slides towards the adjusting protrusion under the pull of the spring, the adjusting protrusion compresses the spring and causes the spring to extend, eliminating the need to separately move the adjusting protrusion and preventing the zipper from clamping the fabric due to operator forgetfulness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the pull head structure in this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0017] 1. Chain belt; 2. Pull head; 3. Limiting ring; 4. Slide groove; 5. Spring; 6. Adjusting protrusion; 7. Spring; 8. Limiting plate; 9. Pull tab; 10. Slide rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] A type of anti-pinch bra chain, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes a chain belt 1 and a zipper head 2. A limit ring 3 is fixedly connected to the top surface of the zipper head 2. A pull ring is slidably connected between the limit ring 3 and the zipper head 2. One end of the zipper head 2 is provided with a spring piece 5 and a sliding groove 4. One end of the spring piece 5 is fixedly connected to the side wall of the zipper head 2, and the other end of the spring piece 5 slides in the sliding groove 4. An adjusting protrusion 6 is provided in the sliding groove 4. The side wall of the adjusting protrusion 6 is fixedly connected to the end of the spring piece 5. The adjusting protrusion 6 passes through the zipper head 2 and is slidably connected to the zipper head 2. The surface of the spring piece 5 is coated with polytetrafluoroethylene.

[0020] Specifically, the slider 2 has a mounting groove on the side wall of the slide groove 4, located above the slide groove 4. First, one end of the spring piece 5 is coated with adhesive and inserted into the mounting groove. Then, the other end of the spring piece 5 is inserted into the slide groove 4. A through groove communicating with the slide groove 4 is provided on the top surface of the slider 2. Adhesive is applied to the bottom end of the adjusting protrusion 6, and then the adjusting protrusion 6 is inserted into the through groove, so that the bottom end of the adjusting protrusion 6 is bonded to the spring piece 5. Finally, a limiting ring 3 and a pull ring are installed on the slider 2. The ring completes the processing of the zipper head 2. The zipper head 2 is combined with the chain belt 1 to form a zipper. Before pulling the ring towards the spring piece 5, the adjusting lug 6 is first moved to make the spring piece 5 extend outward. The spring piece 5, rolled into a C-shape, pushes the fabric on both sides to prevent the zipper head 2 from clamping the fabric. The width of the through groove is smaller than the width of the spring piece 5 to prevent the spring piece 5 from bulging upward in the through groove. The polytetrafluoroethylene coating on the surface of the spring piece 5 has a lubricating effect and reduces the wear between the spring piece 5 and the zipper head 2.

[0021] like Figure 2 , Figure 3 As shown, the pull ring includes an integrally formed pull tab 9 and a slide rod 10. The slide rod 10 is located between the limiting ring 3 and the pull head 2. The top of the adjusting protrusion 6 is located between the slide rod 10 and the limiting ring 3. The adjusting protrusion 6 is located on the side of the slide rod 10 close to the spring piece 5. A spring 7 is fixedly connected to the side of the top of the adjusting protrusion 6 away from the slide rod 10. The other end of the spring 7 is fixedly connected to the side wall of the limiting ring 3. The compression direction of the spring 7 is the same as the sliding direction of the adjusting protrusion 6. The cross-section of the slide rod 10 is square. The side wall of the slide rod 10 fits against the side wall of the adjusting protrusion 6. A limiting plate 8 is fixedly connected to the side wall of the pull head 2, which has a groove 4. The limiting plate 8 is located below the spring piece 5.

[0022] Specifically, the pull tab 9 and the slide bar 10 are connected by two connecting rings. The connecting rings, pull tab 9, and slide bar 10 are integrally formed. The edges of the slide bar 10 and the edges of the connecting rings are rounded to avoid scratching the surface of the pull head 2 and the surface of the limiting ring 3. The spring 7 is a compression spring, with its two ends embedded in the side wall of the adjusting protrusion 6 and the side wall of the limiting ring 3, respectively. When the slide bar 10 slides towards the adjusting protrusion 6 under the action of the pull tab 9, the adjusting protrusion 6 compresses the spring 7 and causes the spring piece 5 to extend. This eliminates the need to manually adjust the adjusting protrusion 6, preventing the pull head 2 from getting caught in the fabric due to operator forgetfulness. After the pull tab 9 is pulled, under the action of the spring 7, the adjusting protrusion 6 drives the spring 5 to reset, avoiding the spring 5 being exposed to the outside for a long time, and thus avoiding the plastic deformation of the spring 5 under the action of external force. The side wall of the slide rod 10 and the side wall of the adjusting protrusion 6 form a plane-to-plane contact, so that the pushing force on the adjusting protrusion 6 is close to its sliding direction, making the adjusting protrusion 6 slide more smoothly. The limiting plate 8 and the pull head 2 are integrally formed, so that the spring 5 tends to be in a horizontal state before entering the slide groove 4 when resetting, reducing the friction between the spring 5 and the side wall of the slide groove 4, that is, reducing the resistance when the spring 5 is reset.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A anti-pinch chain, comprising a chain belt (1) and a zipper pull (2), wherein a limiting ring (3) is fixedly connected to the top surface of the zipper pull (2), and a pull ring is slidably connected between the limiting ring (3) and the zipper pull (2), characterized in that, One end of the zipper (2) is provided with a spring piece (5) and a sliding groove (4). One end of the spring piece (5) is fixedly connected to the side wall of the zipper (2), and the other end of the spring piece (5) slides in the sliding groove (4). An adjusting protrusion (6) is provided in the sliding groove (4). The side wall of the adjusting protrusion (6) is fixedly connected to the end of the spring piece (5). The adjusting protrusion (6) passes through the zipper (2) and is slidably connected to the zipper (2).

2. The anti-pinch zipper according to claim 1, characterized in that, The pull ring includes an integrally formed pull tab (9) and a slide bar (10). The slide bar (10) is located between the limiting ring (3) and the pull head (2). The top of the adjusting protrusion (6) is located between the slide bar (10) and the limiting ring (3). The adjusting protrusion (6) is located on the side of the slide bar (10) near the spring piece (5).

3. The anti-pinch chain according to claim 2, characterized in that, A spring (7) is fixedly connected to the side of the top of the adjusting protrusion (6) away from the slide rod (10), and the other end of the spring (7) is fixedly connected to the side wall of the limiting ring (3). The compression direction of the spring (7) is the same as the sliding direction of the adjusting protrusion (6).

4. The anti-pinch chain according to claim 3, characterized in that, The slide rod (10) has a square cross-section, and the side wall of the slide rod (10) is attached to the side wall of the adjusting protrusion (6).

5. The anti-pinch chain according to claim 4, characterized in that, A limiting plate (8) is fixedly connected to the side wall of the pull head (2) which has a groove (4), and the limiting plate (8) is located below the spring piece (5).

6. The anti-pinch zipper according to claim 1, characterized in that, The surface of the spring (5) is coated with polytetrafluoroethylene.

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