Zipper with easy replacement of zipper head

Abstract

The utility model relates to zip fastener technical field, and disclose a zip fastener convenient to replace zipper head's zip fastener the inside fixed mounting of upper shell has triangle cone, the inside movable joint of triangle cone has connecting column, connecting column penetrates triangle cone, the upper end fixed mounting of connecting column has runner, the lower end fixed mounting of connecting column has limit sheet, the lower end fixed mounting of limit sheet has limit post A, the outside fixed mounting of limit post A has outer thread, the lower end movable joint of upper shell has rotary column, the lower end fixed mounting of rotary column has connecting piece, the lower end fixed mounting of connecting piece has lower shell, the upper end fixed mounting of lower shell has nut, the inside arrangement of nut has internal thread, internal thread and outer thread adapt, this zip fastener convenient to replace zipper head, when the zipper head needs to be replaced when damaging, hand holds runner and rotates counterclockwise, runner drives connecting column synchronous rotation, because the outer thread of limit post A and the internal thread of nut adapt.

Description

Technical Field

[0001] This utility model relates to the field of zipper technology, specifically to a zipper that facilitates the replacement of zipper heads. Background Technology

[0002] As one of the most widely used connectors in modern industry, zippers have become deeply integrated into daily life, commercial production, and outdoor scenarios. From everyday jackets and jeans to backpacks and briefcases for commuting, to tents and mountaineering equipment for outdoor camping, and even curtains and sofa covers in home settings, their opening and closing functions all rely on the stable operation of the zipper head. However, due to its structural characteristics and the influence of the usage environment, the zipper head becomes the most easily damaged component in the zipper system during long-term use, and existing solutions have many pain points.

[0003] Replacing zipper pulls requires specialized tools, which ordinary users lack. They cannot disassemble damaged zipper pulls themselves and must send them to a repair shop, increasing time and money costs and easily causing material waste. Some zipper pulls and zipper tapes are designed as a single unit, so when the zipper pull is damaged, the entire zipper must be replaced, rather than just the zipper pull part, resulting in material waste. Utility Model Content

[0004] The purpose of this invention is to provide a zipper that facilitates the replacement of zipper heads, thereby solving the problem of tool dependence mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A triangular pyramid is fixedly installed inside the upper shell, and a connecting column is movably connected inside the triangular pyramid. The connecting column passes through the triangular pyramid. A rotating wheel is fixedly installed at the upper end of the connecting column, and a limiting piece is fixedly installed at the lower end of the connecting column. A limiting post A is fixedly installed at the lower end of the limiting piece, and an external thread is fixedly installed on the outside of the limiting post A. A rotating column is movably connected to the lower end of the upper shell, and a connecting piece is fixedly installed at the lower end of the rotating column. A lower shell is fixedly installed at the lower end of the connecting piece, and a nut is fixedly installed at the upper end of the lower shell. The nut has an internal thread, which is compatible with the external thread. Through the threaded engagement of the external and internal threads, the separation or fixing of the upper shell and the lower shell can be achieved simply by rotating the rotating wheel, without the need for any professional tools.

[0006] Preferably, the upper end of the upper shell is movably connected to a pull shaft, the pull shaft is movably connected to a pull tab, the lower end of the pull shaft is movably connected to a limit post B, the limit post B is fixedly installed with a spring, the lower end of the limit post B is fixedly installed with a circular piece, and the lower end of the circular piece is fixedly installed with a locking pin. The spring provides continuous elastic support for the locking pin. When the pull tab is pulled, the locking pin moves upward to unlock. After being released, the locking pin moves downward to lock. This can effectively prevent the zipper from sliding open on its own. At the same time, the arc design at the lower end of the locking pin reduces wear on the zipper teeth and extends the overall life of the zipper.

[0007] Compared with the prior art, the beneficial effects of this utility model are:

[0008] 1. This zipper head is easy to replace. The upper and lower shells can be separated or fixed by simply rotating the wheel through the threaded engagement of the external and internal threads, without the need for any professional tools.

[0009] 2. This zipper, which makes it easy to replace the zipper pull, uses a spring to provide continuous elastic support for the locking pin. When the pull tab is pulled, the locking pin moves upward to unlock, and when released, the locking pin moves downward to lock, which can effectively prevent the zipper from sliding open on its own. At the same time, the rounded design at the lower end of the locking pin reduces wear on the zipper teeth and extends the overall life of the zipper.

[0010] 3. This zipper head is easy to replace. The triangular cone provides precise positioning and guidance for the connecting post, preventing it from shifting during pulling. The limiting piece prevents the connecting post from moving too far downward. Together with the limiting post A and the nut, it ensures a tight connection between the upper and lower shells, making it less likely to fall off during use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 4 ;

[0015] Figure 5 This is a top view of the structure of this utility model.

[0016] In the diagram: 1. Upper shell, 2. Triangular cone, 3. Connecting post, 4. Rotating wheel, 5. Pull shaft, 6. Pull plate, 7. Limiting plate, 8. External thread, 9. Limiting post A, 10. Lower shell, 11. Nut, 12. Internal thread, 13. Rotating post, 14. Connecting plate, 15. Spring, 16. Locking pin, 17. Circular plate, 18. Limiting post B. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 This utility model provides a technical solution: a triangular pyramid is fixedly installed inside the upper shell, and a connecting post is movably connected inside the triangular pyramid, the connecting post passing through the triangular pyramid. A rotating wheel is fixedly installed at the upper end of the connecting post, and a limiting plate is fixedly installed at the lower end of the connecting post. A limiting post A is fixedly installed at the lower end of the limiting plate, and an external thread is fixedly installed on the outside of the limiting post A. A rotating post is movably connected to the lower end of the upper shell, and a connecting plate is fixedly installed at the lower end of the rotating post. A lower shell is fixedly installed at the lower end of the connecting plate, and a nut is fixedly installed at the upper end of the lower shell. The nut has an internal thread that matches the external thread. When the zipper head is damaged and needs to be replaced, hold the wheel and rotate it counterclockwise. The wheel will drive the connecting post to rotate synchronously. Since the external thread of the limiting post A matches the internal thread of the nut, the limiting post A will gradually unscrew from the nut during the rotation, allowing the upper and lower shells to separate. At this time, the damaged part can be removed and replaced, or the entire zipper head can be replaced. After the operation is completed, align the limiting post A with the nut and rotate the wheel clockwise until the limiting piece fits against the upper end of the nut to complete the assembly.

[0019] The upper end of the upper shell is movably connected to a pull shaft, and the pull shaft is movably connected to a pull tab. The lower end of the pull shaft is movably connected to a limit post B, and a spring is fixedly installed on the outside of the limit post B. A circular piece is fixedly installed on the lower end of the limit post B, and a locking pin is fixedly installed on the lower end of the circular piece. When the pull tab is pulled, the pull tab drives the pull shaft to move upward, the pull shaft pulls the limit post B, which in turn causes the circular piece to move upward and compress the spring. The locking pin moves upward with the circular piece and separates from the zipper teeth, thus unlocking the zipper. The zipper head can be pushed to move along the zipper tape. After the pull tab is released, the spring returns to its elasticity, pushes the circular piece downward, and the locking pin inserts into the gap between the zipper teeth, thus locking the zipper and preventing the zipper from sliding on its own.

[0020] Working principle: When the zipper head is damaged and needs to be replaced, hold the rotating wheel and rotate it counterclockwise. The rotating wheel drives the connecting post to rotate synchronously. Since the external thread of the limiting post A matches the internal thread of the nut, the limiting post A will gradually unscrew from the nut during rotation, allowing the upper and lower shells to separate. At this time, the damaged part can be removed and replaced, or the entire zipper head can be replaced. After the operation is completed, align the limiting post A with the nut and rotate the rotating wheel clockwise until the limiting piece is in contact with the upper end of the nut to complete the assembly. When the pull tab is pulled, the pull tab drives the pull shaft to move upward. The pull shaft pulls the limiting post B, which in turn causes the circular piece to move upward and compress the spring. The locking pin moves upward with the circular piece and separates from the zipper teeth, thus unlocking the zipper. The zipper head can be pushed to move along the zipper tape. After the pull tab is released, the spring returns to its elasticity, pushing the circular piece downward. The locking pin inserts into the gap between the zipper teeth, thus locking the zipper and preventing the zipper from sliding on its own.

[0021] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A zipper with an easily replaceable zipper head, comprising an upper shell (1), characterized in that: A triangular pyramid (2) is fixedly installed inside the upper shell. A connecting post (3) is movably connected inside the triangular pyramid (2). The connecting post (3) passes through the triangular pyramid (2). A rotating wheel (4) is fixedly installed at the upper end of the connecting post (3). A limiting piece (7) is fixedly installed at the lower end of the connecting post (3). A limiting post A (9) is fixedly installed at the lower end of the limiting piece (7). An external thread (8) is fixedly installed on the outside of the limiting post A (9). A rotating post (13) is movably connected to the lower end of the upper shell (1). A connecting piece (14) is fixedly installed at the lower end of the rotating post (13). A lower shell (10) is fixedly installed at the lower end of the connecting piece (14). A nut (11) is fixedly installed at the upper end of the lower shell (10). An internal thread (12) is provided inside the nut (11). The internal thread (12) is adapted to the external thread (8).

2. The zipper with an easily replaceable zipper head according to claim 1, characterized in that: The upper end of the upper shell (1) is movably connected to a pull shaft (5), and the pull shaft (5) is movably connected to a pull tab (6).

3. A zipper with an easily replaceable zipper pull according to claim 2, characterized in that: The lower end of the pull shaft (5) is movably connected to a limiting post B (18), and a spring (15) is fixedly installed on the outside of the limiting post B (18).

4. A zipper with an easily replaceable zipper pull according to claim 3, characterized in that: A circular piece (17) is fixedly installed at the lower end of the limiting post B (18).

5. A zipper with an easily replaceable zipper pull according to claim 4, characterized in that: A locking pin (16) is fixedly installed at the lower end of the circular piece (17).

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