Push-in one-piece molded open-end clip

Abstract

This application discloses a push-in type one-piece molded open-end fastener, including a housing and a fastener. The housing includes an one-piece molded first limiting platform and an elastic body. The first limiting platform has a through hole coaxial with the elastic body. One end of the fastener near the housing is inserted into the through hole and connected to the inner wall of the through hole by several connecting strips. The housing, fastener, and connecting strips are integrally molded. After the connecting strips break, the fastener slides into the elastic body. This push-in type one-piece molded open-end fastener has a simple structure. The housing and fastener can be fed using a single feeding mechanism. In use, the connecting strips can be broken by external force.

Description

Technical Field

[0001] This application relates to the field of fastener technology, and in particular to a push-in one-piece molded open-end fastener. Background Technology

[0002] Push-in open-end fasteners are lightweight, easy to install, and offer excellent fastening performance, making them widely used as crucial fasteners in automotive interiors. They consist of a housing and a fastener, requiring pre-assembly before use. During actual use, the fastener is fully pushed into the housing for final tightening. Currently, in existing open-end fastener technology, the housing and fastener are separate products. Mold processing, injection molding production, warehousing management, assembly equipment feeding mechanisms, and inspection methods all require two separate systems, significantly increasing production costs and resulting in poor economic efficiency. Furthermore, after installation, disassembly requires destroying the fastener and replacing the entire unit. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a push-in one-piece molded open-end clip to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a push-in type one-piece molded open-end fastener, including a housing and a fastener. The housing includes an one-piece molded first limiting platform and an elastic body. The first limiting platform is provided with a through hole coaxial with the elastic body. One end of the fastener near the housing is inserted into the through hole and connected to the inner wall of the through hole by several connecting strips. The housing, the fastener and the connecting strips are integrally molded. After the connecting strips break, the fastener slides into the elastic body.

[0005] Furthermore, in the aforementioned push-in one-piece molded open-end rivet, the elastic body includes several arc-shaped elastic sheets, with clearance grooves formed between adjacent elastic sheets. A limiting claw protrudes from the inner wall of one end of the elastic sheet away from the first limiting platform, and a sliding groove is formed between adjacent limiting claws. The width of the sliding groove is smaller than the width of the clearance groove, and the sliding groove and the corresponding clearance groove are connected by a transition groove.

[0006] Furthermore, in the aforementioned push-in one-piece molded open-end clip, the clip includes a second limiting platform and a column, and a pre-installed boss is provided at the end of the column opposite to the second limiting platform.

[0007] Furthermore, in the aforementioned push-in one-piece molded open-end fastener, the pre-installed boss is provided with a first guide surface at the end opposite to the second limiting platform.

[0008] Furthermore, in the aforementioned push-in one-piece molded open-end fastener, the surface of the column has a protruding mounting boss, and the mounting boss and the pre-installed boss are spaced apart.

[0009] Furthermore, in the aforementioned push-in one-piece molded open-end clip, a second guide surface is provided at the end of the mounting boss that is away from the second limiting platform.

[0010] Furthermore, in the aforementioned push-in one-piece molded open-end clip, a first limiting strip corresponding to the slide groove is provided between the mounting boss and the pre-installed boss.

[0011] Furthermore, in the aforementioned push-in one-piece molded open-end clip, the inner wall of the through hole is provided with a plurality of anti-rotation grooves that connect to the corresponding clearance groove, and the surface of the column near the second limiting platform has an anti-rotation rib that protrudes from it and corresponds to the anti-rotation groove.

[0012] Furthermore, in the aforementioned push-in one-piece molded open-end clip, the end of the anti-rotation rib near the mounting boss extends to the end face of the mounting boss via a second limiting strip.

[0013] Furthermore, in the aforementioned push-in one-piece molded open-end fastener, several reinforcing parts are provided between adjacent anti-rotation ribs and between adjacent second limiting strips.

[0014] Compared with the prior art, the push-in one-piece molded open-tail clip structure of this utility model is simple. While retaining the product pre-assembly and assembly functions, the clip is connected to the shell by a connecting strip, which greatly reduces the cost of mold opening, warehousing management and subsequent assembly. The elastic body composed of elastic sheets allows the clip to be disassembled and assembled to the shell multiple times. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The image shown is a molding state diagram of a push-in one-piece molded open-end clip in a specific embodiment of this utility model.

[0016] Figure 2 The image shown is a pre-installation diagram of a push-in one-piece molded open-end clip in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a structural schematic of the shell in a specific embodiment of this utility model.

[0018] Figure 4 The diagram shown is a structural schematic of the clip in a specific embodiment of this utility model. Detailed Implementation

[0019] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Combination Figures 1 to 4 As shown, a push-in type one-piece molded open-end clip includes a housing 1 and a clip 2. The housing 1 includes an one-piece molded first limiting platform 11 and an elastic body 12. The first limiting platform 11 is provided with a through hole coaxial with the elastic body 12. One end of the clip 2 near the housing 1 is inserted into the through hole and connected to the inner wall of the through hole by several connecting strips 3. The housing 1, the clip 2 and the connecting strips 3 are integrally molded. After the connecting strips 3 break, the clip 2 slides into the elastic body 12.

[0021] In actual production, the shell and the clip can be produced simultaneously using a single mold. The shell and the clip are connected by a connecting strip and can be fed by a feeding mechanism. When in use, the clip is pushed down until the connecting strip breaks, and the clip can be inserted into the elastic body to complete the corresponding installation. The first limiting platform has operating grooves on both sides of the end face away from the elastic body to facilitate the removal of the clip.

[0022] For example, see Figures 1 to 4 As shown, the elastic body 12 includes several arc-shaped elastic sheets, and a relief groove is formed between adjacent elastic sheets. A limiting claw 121 protrudes from the inner wall of one end of the elastic sheet away from the first limiting platform 11. A sliding groove is formed between adjacent limiting claws 121. The width of the sliding groove is smaller than the width of the relief groove. The sliding groove and the corresponding relief groove are connected by a transition groove.

[0023] In this technical solution, after the pin is inserted into the elastic body, it is axially positioned by the limiting claw abutting against the pre-installed boss or the mounting boss. The elastic sheet is coaxially arranged with the pin, and adjacent elastic sheets are separated by the avoidance groove and the sliding groove. When it is subjected to radial force, it will deform and reset after the external force disappears. The inner wall of the limiting claw is a conventional structure such as a slope or a concave spherical surface, which plays a guiding role in opening the elastic sheet. The avoidance groove avoids interference between the elastic sheet and the first limiting strip, the second limiting strip and the anti-rotation rib.

[0024] For example, see Figures 1 to 4As shown, the clip 2 includes a second limiting platform 21 and a column (not shown), and a pre-installed protrusion 22 is provided at the end of the column away from the second limiting platform 21.

[0025] In this technical solution, after the pin is inserted into the elastomer, the pre-installed boss opens the limiting claw of the elastic sheet. After the elastic sheet is reset by the limiting claw, the limiting claw abuts against the corresponding end face of the pre-installed boss, thus initially limiting the pin axially and completing the pre-installation of the pin and the housing.

[0026] For example, see Figures 1 to 4 As shown, the pre-installed boss 22 has a first guide surface 221 at one end away from the second limiting platform 21.

[0027] In this technical solution, the first guide surface is a conventional conical structure, which guides the insertion of the pin into the elastic body, facilitates quick insertion between the limiting claws, and expands the limiting claws.

[0028] For example, see Figures 1 to 4 As shown, the surface of the column has a mounting boss 23 protruding from it, and the mounting boss 23 and the pre-installed boss 22 are spaced apart.

[0029] In this technical solution, in the pre-installed state, the clip is pushed in until the mounting boss opens the limiting claw of the elastic plate. After the elastic plate is reset by the limiting claw, the limiting claw abuts against the corresponding end face of the mounting boss, fixing the clip axially and completing the installation of the clip and the housing.

[0030] For example, see Figures 1 to 4 As shown, a second guide surface 231 is provided at the end of the mounting boss 23 that is away from the second limiting platform 21.

[0031] In this technical solution, the second guide surface is a conventional conical structure, which guides the insertion of the pin into the elastic body, facilitates quick insertion between the limiting claws, and expands the limiting claws.

[0032] For example, see Figures 1 to 4 As shown, a first limiting strip 24 corresponding to the slide groove is provided between the mounting protrusion 23 and the pre-installed protrusion 22.

[0033] In this technical solution, after the limiting claw abuts against the pre-installed boss, the corresponding limiting claw is engaged between the adjacent first limiting strips, and the side of the limiting claw slides against the corresponding first limiting strip to avoid deformation of the limiting claw caused by external force.

[0034] For example, see Figures 1 to 4 As shown, the inner wall of the through hole is provided with several anti-rotation grooves that connect to the corresponding clearance grooves, and the surface of the column near the second limiting platform 21 has anti-rotation ribs 25 that correspond to the anti-rotation grooves.

[0035] In this technical solution, during the pre-installation state, the anti-rotation rib is inserted into the corresponding anti-rotation groove to prevent the pin from rotating relative to the housing and to prevent the first limit strip from rotating, which could cause deformation of the limit claw.

[0036] For example, see Figures 1 to 4 As shown, the anti-rotation rib 25 extends to the end face of the mounting boss via the second limiting strip 26 at one end.

[0037] In this technical solution, the second limiting strip has the same function as the first limiting strip. In the installation state, the corresponding limiting claw is engaged between the adjacent first limiting strips, and the side of the limiting claw slides against the corresponding first limiting strip to avoid deformation of the limiting claw caused by external force.

[0038] For example, see Figures 1 to 4 As shown, several reinforcing parts (not shown) are provided between adjacent anti-rotation ribs 25 and between adjacent second limiting strips 26.

[0039] In this technical solution, the overall strength of the clips is enhanced by strengthening the reinforcing section to ensure service life.

[0040] In summary, this push-in one-piece molded open-end clip has a simple structure. While retaining the product pre-assembly and assembly functions, it connects the clip to the shell through a connecting strip, which greatly reduces the costs of mold opening, warehousing management and subsequent assembly. The elastic body composed of elastic sheets allows the clip to be disassembled and assembled to the shell multiple times.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A push-in type one-piece molded open-end fastener, characterized in that, The device includes a housing and a locking pin. The housing includes an integrally formed first limiting platform and an elastic body. The first limiting platform has a through hole coaxial with the elastic body. One end of the locking pin near the housing is inserted into the through hole and connected to the inner wall of the through hole by several connecting strips. The housing, the locking pin, and the connecting strips are integrally formed. After the connecting strips break, the locking pin slides into the elastic body.

2. The push-in one-piece molded open-end fastener according to claim 1, characterized in that: The elastic body includes several arc-shaped elastic sheets, with clearance grooves formed between adjacent elastic sheets. A limiting claw protrudes from the inner wall of one end of the elastic sheet away from the first limiting platform, and a sliding groove is formed between adjacent limiting claws. The width of the sliding groove is smaller than the width of the clearance groove, and the sliding groove and the corresponding clearance groove are connected by a transition groove.

3. The push-in one-piece molded open-end fastener according to claim 2, characterized in that: The clip includes a second limiting platform and a column, and a pre-installed protrusion is provided at the end of the column opposite to the second limiting platform.

4. The push-in one-piece molded open-end fastener according to claim 3, characterized in that: The pre-installed boss has a first guide surface at the end opposite to the second limiting platform.

5. The push-in one-piece molded open-end fastener according to claim 3, characterized in that: The surface of the column has protruding mounting bosses, and the mounting bosses and the pre-installed bosses are spaced apart.

6. The push-in one-piece molded open-end fastener according to claim 5, characterized in that: The mounting boss has a second guide surface at the end opposite to the second limiting platform.

7. The push-in one-piece molded open-end fastener according to claim 5, characterized in that: A first limiting strip corresponding to the slide groove is provided between the mounting boss and the pre-installed boss.

8. The push-in one-piece molded open-end fastener according to claim 5, characterized in that: The inner wall of the through hole is provided with several anti-rotation grooves that connect to the corresponding clearance grooves, and the surface of the column near the second limiting platform has anti-rotation ribs that protrude from it and correspond to the anti-rotation grooves.

9. The push-in one-piece molded open-end fastener according to claim 8, characterized in that: The anti-rotation rib extends from one end near the mounting boss to the end face of the mounting boss via a second limiting strip.

10. The push-in one-piece molded open-end fastener according to claim 9, characterized in that: Several reinforcing parts are provided between adjacent anti-rotation ribs and between adjacent second limiting strips.

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