Self-locking zipper

Abstract

The utility model discloses a self-locking zipper which comprises a zipper tape and a zipper head, the zipper head comprises an upper wing plate, a lower wing plate arranged opposite to the upper wing plate and a supporting core arranged between the upper wing plate and the lower wing plate, the supporting core is fixedly connected with the upper wing plate and the lower wing plate, a connecting part is fixedly connected above the upper wing plate, and the connecting part is fixedly connected with the lower wing plate. The top of the connecting part is fixedly connected with a plurality of connecting plates, the connecting plates are fixedly connected with fixing shafts, the fixing shafts are rotatably connected with cams, the cams are provided with arc-shaped grooves, connecting columns are slidably connected into the arc-shaped grooves, the two ends of each connecting column are fixedly connected with pulling pieces, and clamping pins are arranged below the cams and penetrate through the through holes to be slidably connected with the upper wing plate. A spring is arranged between the clamping pin and the upper wing plate, and the clamping pin, the spring, the cam and the pull piece which are arranged on the zipper head are matched, so that the cam is rotated by pulling the pull piece, the clamping pin is bounced and clamped from the zipper tape under the action of the spring, and the zipper is locked and unlocked.

Description

Technical Field

[0001] The utility model relates to a zipper, in particular to a self-locking zipper. Background Art

[0002] A zipper is a commonly used device for tying together two edges of fabric or other flexible materials. It is used in clothing, luggage and other bags, camping equipment, etc. There are many types of zippers available in different sizes, shapes and colors to meet different usage requirements.

[0003] When the existing zipper is in use, when the connecting belts and connecting teeth on both sides are subjected to tension on both sides, the zipper head may slip, and the zipper may be easily torn apart as a whole, which is inconvenient for users to use. Utility Model Content

[0004] The purpose of the utility model is to provide a self-locking zipper to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A self-locking zipper comprises a zipper tape and a zipper head. The zipper head comprises an upper wing plate, a lower wing plate arranged opposite to the upper wing plate, and a support core arranged between the upper wing plate and the lower wing plate. The support core is fixedly connected to the upper wing plate and the lower wing plate. A connecting portion is fixedly connected to the upper part of the upper wing plate, and a plurality of connecting plates are fixedly connected to the top of the connecting portion. A fixed shaft is fixedly connected to the connecting plate, and a cam is rotatably connected to the fixed shaft. An arc groove is provided on the cam, and a connecting column is slidably connected in the arc groove. Pull tabs are fixedly connected to both ends of the connecting column. A bayonet is provided below the cam, and the bayonet passes through a through hole and is slidably connected to the upper wing plate. A spring is provided between the bayonet and the upper wing plate, and the upper end of the spring is fixedly connected to the top of the bayonet, and the lower end of the spring is fixedly connected to the upper wing plate.

[0007] As a further solution of the utility model: a limiting groove is provided on the fixed shaft, and the cam sleeve is arranged in the limiting groove.

[0008] As a further solution of the utility model: rubber sleeves are provided on the limiting grooves and the connecting columns.

[0009] As a further solution of the utility model: a U-shaped groove is provided at the front end of the pull tab.

[0010] Compared with the prior art, the beneficial effects of the utility model are: a self-locking zipper, through the cooperation of the latch, spring, cam and pull tab provided on the zipper head, realizes that the cam is rotated by pulling the pull tab, so that the latch is bounced and stuck from the zipper tape under the action of the spring, thereby realizing the locking and unlocking of the zipper. The self-locking zipper can be locked after the zipper is pulled to the specified position, and will not be torn apart when subjected to tension on both sides, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a self-locking zipper.

[0012] Figure 2 The present invention is a structural schematic diagram of a zipper head in a self-locking zipper.

[0013] Figure 3 The present invention is a cross-sectional view of a zipper head in a self-locking zipper.

[0014] Figure 4 The figure is a schematic diagram of the structure of a fixed shaft and a cam combination in a self-locking zipper.

[0015] In the figure: 100, zipper tape; 1, upper wing plate; 2, lower wing plate; 3, support core; 4, connecting portion; 5, connecting plate; 6, fixed shaft; 7, cam; 71, arc groove; 8, connecting column; 9, pull tab; 10, bayonet; 11, spring; 12, through hole DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figures 1 to 4 In the embodiment of the utility model, a self-locking zipper includes a zipper tape 100 and a zipper head. The zipper head includes an upper wing plate 1, a lower wing plate 2 arranged opposite to the upper wing plate 1, and a support core 3 arranged between the upper wing plate 1 and the lower wing plate 2. The support core 3 is fixedly connected to the upper wing plate 1 and the lower wing plate 2. A connecting portion 4 is fixedly connected to the upper part of the upper wing plate 1, and a plurality of connecting plates 5 are fixedly connected to the top of the connecting portion 4. A fixed shaft 6 is fixedly connected to the connecting plate 5, and a cam 7 is rotatably connected to the fixed shaft 6. An arc groove 71 is provided on the cam 7, and a connecting column 8 is slidably connected in the arc groove 71. Pull tabs 9 are fixedly connected to both ends of the connecting column 8. A bayonet 10 is provided below the cam 7. The bayonet 10 passes through a through hole 12 and is slidably connected to the upper wing plate 1. A spring 11 is provided between the bayonet 10 and the upper wing plate 1, and the upper end of the spring 11 is fixedly connected to the top of the bayonet 10, and the lower end of the spring 11 is fixedly connected to the upper wing plate 1.

[0018] A limiting groove 61 is provided on the fixed shaft 6, and the cam 7 is sleeved in the limiting groove 61 to prevent the cam 7 from moving when the pull tab 9 is pulled. A rubber sleeve is sleeved on the limiting groove 61 and the connecting column 8. The rubber sleeve can increase the friction between each other and prevent the cam 7 from rotating at will. A U-shaped groove 91 is provided at the front end of the pull tab 9 to prevent the pull tab 9 from interfering with other components when rotating.

[0019] The working principle of the utility model is as follows: when the self-locking zipper is used, the pull tab 9 is pulled, and the pull tab 9 drives the connecting column 8 to slide in the arc groove 71, thereby driving the cam 7 to rotate around the fixed shaft 6, and the locking area at the bottom of the cam 7 moves upward and leaves the latch 10. The latch 10 bounces upward under the action of the spring 11, thereby releasing the lock of the zipper, and the zipper can be pulled upward. When the zipper is pulled to the specified position, the pull tab 9 is rotated downward to a horizontal position with the zipper tape 100, and the pull tab 9 drives the cam 7 to rotate around the fixed shaft 6. The locking area at the bottom of the cam 7 rotates downward and contacts the latch 10. The latch 10 moves downward under the action of the spring 11 and contacts the zipper tape 100, thereby locking it. Since the same radius area at the bottom of the cam 7 is the locking area, the self-locking zipper can be self-locking. The pull tab 9 can be reversed by the fixed column 8. When the zipper is pulled downward, the pull tab 9 is rotated downward and the pull tab 9 is pulled. The pull tab 9 drives the cam 7 to rotate, and the locking area at the bottom of the cam 7 moves upward, thereby releasing the lock of the zipper and allowing the zipper to be pulled downward.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-locking zipper, comprising a zipper tape (100) and a zipper head, the zipper head comprising an upper wing plate (1), a lower wing plate (2) arranged opposite to the upper wing plate (1), and a support core (3) arranged between the upper wing plate (1) and the lower wing plate (2), the support core (3) being fixedly connected to the upper wing plate (1) and the lower wing plate (2), characterized in that: A connecting portion (4) is fixedly connected to the upper wing plate (1), a plurality of connecting plates (5) are fixedly connected to the top of the connecting portion (4), a fixed shaft (6) is fixedly connected to the connecting plate (5), a cam (7) is rotatably connected to the fixed shaft (6), an arc groove (71) is provided on the cam (7), a connecting column (8) is slidably connected in the arc groove (71), pull tabs (9) are fixedly connected to both ends of the connecting column (8), a bayonet (10) is provided below the cam (7), the bayonet (10) passes through a through hole (12) and is slidably connected to the upper wing plate (1), a spring (11) is provided between the bayonet (10) and the upper wing plate (1), the upper end of the spring (11) is fixedly connected to the top of the bayonet (10), and the lower end of the spring (11) is fixedly connected to the upper wing plate (1).

2. A self-locking zipper according to claim 1, characterized in that: A limiting groove (61) is provided on the fixed shaft (6), and the cam (7) is sleeved in the limiting groove (61).

3. A self-locking zipper according to claim 2, characterized in that: The limiting groove (61) and the connecting column (8) are sleeved with a rubber sleeve.

4. A self-locking zipper according to claim 3, characterized in that: A U-shaped groove (91) is provided at the front end of the pull tab (9).

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