Anti-dropping zipper pull structure of zipper head

Abstract

The utility model provides an anti-drop zipper pull structure of a zipper head, which comprises a connecting piece used for being connected with the zipper head, the connecting piece is provided with two oppositely arranged lower suspension arms, the two lower suspension arms are both provided with mounting holes, the two mounting holes are concentrically arranged, a connecting shaft is arranged between the two lower suspension arms, two ends of the connecting shaft are respectively inserted into the two mounting holes, and the two ends of the connecting shaft are connected with the connecting piece. The connecting shaft is sleeved with a limiting sleeve, the two end faces of the limiting sleeve abut against the two lower lifting arms respectively, a clamping limiting structure is arranged between the limiting sleeve and the connecting shaft, and the limiting sleeve is connected with a pull piece. The zipper pull is provided with the clamping limiting structure, and the limiting sleeve is fixed on the connecting shaft through the clamping limiting structure, so that the connecting shaft cannot axially move, the connecting shaft can be effectively prevented from falling off, the zipper pull is connected more stably, and the use reliability is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of zippers, and in particular relates to an anti-dropping pull-piece structure of a zipper head. Background Art

[0002] Existing zippers typically open and close by pulling a zipper head with a pull tab. The pull tab structure typically includes a connecting piece with two lower arms, each with mounting holes. Each lower arm has a connecting shaft, and both ends of the connecting shaft are inserted into the mounting holes. A ferrule is formed on the pull tab, which fits over the connecting shaft. To secure the connecting shaft to the lower arms, two main methods exist. One involves forming a plum blossom needle structure at each end of the connecting shaft. This needle is then expanded by striking the ends, thereby securing the connecting shaft. The other method involves forming threads on both ends of the connecting shaft. The connecting shaft passes through the lower arms and is then screwed onto a nut to secure it. In actual use, both methods suffer from the problem of the connecting shaft detaching and falling, causing the pull tab to separate from the zipper head. This is primarily due to the size of each needle in the plum blossom needle structure being too small due to product size constraints, resulting in insufficient locking force. Threaded connections also pose the problem of the nut loosening. Therefore, both conventional methods have their own drawbacks. Utility Model Content

[0003] In order to overcome the deficiencies and problems of the prior art, the utility model provides an anti-dropping pull tab structure for a zipper head, which can effectively prevent the connecting shaft from falling off, has a reliable structure, and is easy to produce.

[0004] The utility model is realized through the following technical solutions:

[0005] A zipper head anti-detachment pull tab structure includes a connecting piece for connecting to the zipper head, wherein the connecting piece is provided with two lower hanging arms arranged opposite to each other, each lower hanging arm is provided with a mounting hole, the two mounting holes are arranged concentrically, a connecting shaft is provided between the two lower hanging arms, the two ends of the connecting shaft are respectively inserted into the two mounting holes, a limiting sleeve is provided on the connecting shaft, the two end surfaces of the limiting sleeve respectively abut against the two lower hanging arms, a clamping limiting structure is provided between the limiting sleeve and the connecting shaft, and the limiting sleeve is connected to the pull tab.

[0006] The clamping limiting structure includes a clamping groove arranged on the connecting shaft, and the limiting sleeve is provided with an inner convex portion, which is clamped into the clamping groove.

[0007] The clamping groove is an annular groove, and the inner convex portion is annular and matches the clamping groove.

[0008] The limiting sleeve is a thin-walled metal tube, and the inner convex portion is formed by stamping.

[0009] The connecting piece is provided with a connecting hole for connecting with a zipper head.

[0010] The pull tab is made of leather and is sleeved on the limiting sleeve.

[0011] The utility model is provided with a clamping limit structure, and the limit sleeve is fixed to the connecting shaft through the clamping limit structure, so that the connecting shaft cannot move axially, which can effectively prevent the connecting shaft from falling off, thereby making the pull-piece connection more stable and ensuring reliability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model;

[0014] Figure 3 It is a structural diagram of the connecting piece in the utility model;

[0015] Figure 4 It is a schematic diagram of the exploded structure of the parts at the connecting piece in the utility model.

[0016] In the figure: 1-connecting piece, 2-pull tab, 3-lower arm, 4-mounting hole, 5-connecting shaft, 6-limiting sleeve, 7-slot, 8-inner convex part. DETAILED DESCRIPTION

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a zipper head anti-drop pull tab structure includes a connecting piece 1 for connecting to the zipper head. The connecting piece 1 is provided with a connecting hole for connecting to the zipper head. When connected to the zipper head, the zipper head and the connecting hole are buckled to realize the connection between the connecting piece 1 and the zipper head.

[0019] Two lower hanging arms 3 arranged opposite to each other are provided on the connecting plate 1, and mounting holes 4 are provided on both lower hanging arms 3. The two mounting holes 4 are concentrically arranged, and a connecting shaft 5 is provided between the two lower hanging arms 3. The two ends of the connecting shaft 5 are respectively inserted into the two mounting holes, thereby realizing the connection between the connecting shaft 5 and the two lower hanging arms 3.

[0020] A limiting sleeve 6 is sleeved on the connecting shaft 5, and both end surfaces of the limiting sleeve 6 respectively abut against the two lower booms 3. A clamping limiting structure is provided between the limiting sleeve 6 and the connecting shaft 5, so that the limiting sleeve 6 and the connecting shaft 5 are fixed. Since the both end surfaces of the limiting sleeve 6 respectively abut against the two lower booms 3, the connecting shaft 5 cannot move axially, so that the connecting shaft 5 cannot loosen.

[0021] The snap-fit ​​stop structure includes a slot 7 on the connecting shaft 5 and an inner protrusion 8 on the stop sleeve 6. The inner protrusion 8 snaps into the slot 7, securing the connecting shaft 5 and the stop sleeve 6. The slot 7 is an annular groove, and the inner protrusion 8 is an annular shape that matches the slot 7. This structure ensures a more secure connection between the connecting shaft 5 and the stop sleeve 6, preventing relative axial movement between them. The stop sleeve 6 is a thin-walled metal tube, and the inner protrusion 8 is stamped, making it easier to manufacture.

[0022] The limiting sleeve 6 is connected with the pull tab 2, so that the pull tab 2 is connected to the connecting piece 1. The material of the pull tab 2 is leather, and the pull tab 2 is sleeved on the limiting sleeve 6.

[0023] The production and installation process of this embodiment is as follows: first, place the limit sleeve 6 between the two lower booms 3, and align the center with the two mounting holes 4, then insert the connecting shaft 5 into the two mounting holes 4 and the limit sleeve 6, and use the stamping equipment to punch the inner convex portion 8 on the limit sleeve 6 so that the inner convex portion 8 is inserted into the card slot 7, and finally install the pull tab 2. The production process is simple.

[0024] The above embodiments are preferred implementations of the present invention and are not intended to limit the present invention. Without departing from the scope of the present invention, any obvious replacements are within the scope of protection of the present invention.

Claims

1. A zipper pull tab structure for preventing detachment, comprising a connecting piece for connecting to the zipper pull tab, characterized in that: The connecting plate is provided with two lower hanging arms arranged opposite to each other, and both lower hanging arms are provided with mounting holes, which are concentrically arranged. A connecting shaft is provided between the two lower hanging arms, and both ends of the connecting shaft are respectively inserted into the two mounting holes. A limiting sleeve is provided on the connecting shaft, and both end surfaces of the limiting sleeve are respectively against the two lower hanging arms. A clamping limiting structure is provided between the limiting sleeve and the connecting shaft, and the limiting sleeve is connected with a pull tab.

2. The anti-drop tab structure of the zipper slider according to claim 1, characterized in that: The clamping limiting structure includes a clamping groove arranged on the connecting shaft, and the limiting sleeve is provided with an inner convex portion, which is clamped into the clamping groove.

3. The anti-drop tab structure of the zipper slider according to claim 2, characterized in that: The clamping groove is an annular groove, and the inner convex portion is annular and matches the clamping groove.

4. The anti-drop tab structure of the zipper puller according to claim 3, characterized in that: The limiting sleeve is a thin-walled metal tube, and the inner convex portion is formed by stamping.

5. The anti-drop tab structure of the zipper puller according to claim 1, characterized in that: The connecting piece is provided with a connecting hole for connecting with a zipper head.

6. The anti-drop tab structure of a zipper slider according to any one of claims 1 to 5, characterized in that: The pull tab is made of leather and is sleeved on the limiting sleeve.

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