Novel anti-falling pressing rivet nut

Abstract

The utility model relates to a novel anti-falling pressing rivet nut and aims to solve the problems that knurling teeth and a nut body in an existing pressing rivet nut are integrally formed, in order to increase the fastening effect, knurling teeth of different thicknesses need to be used for fixing pieces of different thicknesses correspondingly, and the nut body is inconvenient to use. The pressing rivet nut comprises a nut body, an annular boss is fixedly connected to the upper end of the nut body, and an embossing tooth assembly is arranged on the outer portion of the annular boss in a sleeved mode. At the moment, the guide ring frame is not limited, the knurling tooth assembly and the guide ring frame can effectively move upwards along the guide block, and therefore the knurling tooth assembly can be detached, knurling tooth assemblies with different thicknesses can be replaced conveniently, overall replacement is not needed, the practicability of the pressing rivet nut is improved, the guide ring frame is prevented from colliding with the guide block through the arrangement of the sliding groove, and the service life of the pressing rivet nut is prolonged. And smooth sliding of the guide ring frame can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of press riveting nuts, in particular to a novel anti - falling press riveting nut. Background Art

[0002] The press riveting nut, also known as a riveting nut or a self - locking nut, is a nut applied to thin plates or sheet metals. It has a circular shape and one end is provided with embossed teeth and a guiding groove. Its principle is that the embossed teeth are pressed into the pre - set hole positions of the sheet metal. Generally, the diameter of the pre - set hole is slightly smaller than the embossed teeth of the press riveting nut. Through pressure, the embossed teeth of the press riveting nut are squeezed into the plate, causing plastic deformation around the pre - set hole. The deformed material is squeezed into the groove, thus producing a locking effect.

[0003] In the existing press riveting nuts, the embossed teeth and the nut body are integrally formed. In order to increase the fastening effect, different thickness of fixing parts often need to use different thickness of embossed teeth correspondingly. Therefore, it is necessary to replace the whole press riveting nut of different specifications according to the thickness of the fixing part, which reduces the practicability of the press riveting nut. In view of this, we propose a novel anti - falling press riveting nut. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and meet the actual needs, providing a novel anti - falling press riveting nut to solve the technical problem that in the existing press riveting nuts, the embossed teeth and the nut body are integrally formed. In order to increase the fastening effect, different thickness of fixing parts often need to use different thickness of embossed teeth correspondingly. Therefore, it is necessary to replace the whole press riveting nut of different specifications according to the thickness of the fixing part, which reduces the practicability of the press riveting nut.

[0005] To achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: designing a novel anti - falling press riveting nut, including a nut body. An annular boss is fixedly connected to the upper end of the nut body. A press - embossed tooth assembly is sleeved outside the annular boss, and an auxiliary structure is arranged at the lower end of the press - embossed tooth assembly;

[0006] The auxiliary structure includes a guiding ring frame, which is fixed to the lower end of the press - embossed tooth assembly. A group of sliding grooves are symmetrically arranged inside the guiding ring frame, and a group of limiting holes are symmetrically arranged outside the guiding ring frame. A limiting groove is arranged inside the nut body. A group of guiding blocks are symmetrically and fixedly connected to the outer surface of the annular boss. A group of bolts are symmetrically clamped inside the nut body.

[0007] Preferably, the press - embossed tooth assembly and the limiting groove form a clamping structure through the guiding ring frame, and the guiding ring frame and the guiding block form a sliding structure through the sliding groove.

[0008] Preferably, the nut body and the bolt are in threaded connection, and the end of the bolt is matched and clamped inside the limiting hole.

[0009] Preferably, the embossing tooth assembly includes an embossing tooth body sleeved outside the bottom end of the annular boss. A number of triangular protrusions are evenly distributed on the surface of the embossing tooth body, and a set of guiding grooves are symmetrically formed inside the embossing tooth body.

[0010] Preferably, the embossing tooth body and the triangular protrusions are fixedly connected, and the number of convex teeth in the embossing tooth body is the same as the number of triangular protrusions.

[0011] Preferably, the guiding grooves and the guiding blocks are engaged with each other in a matching manner, and the guiding blocks and the annular boss are integrally formed.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By disassembling the bolts, the end of the bolt can be effectively separated from the limiting hole. At this time, the guiding ring frame is not restricted, and the embossing tooth assembly and the guiding ring frame can effectively move upward along the guiding blocks, so as to realize the disassembly of the embossing tooth assembly, facilitate the replacement of embossing tooth assemblies with different thicknesses, without the need for overall replacement, improve the practicability of the riveting nut, and the arrangement of the sliding grooves can prevent the guiding ring frame from colliding with the guiding blocks, and can realize the smooth sliding of the guiding ring frame.

[0014] 2. The cooperation between the guiding grooves and the guiding blocks in the present utility model is used to quickly position the embossing tooth body, so as to facilitate the accurate screwing of the bolts into the limiting holes of the guiding ring frame at the lower end of the embossing tooth body. The triangular protrusions on the surface of the embossing tooth body increase the contact surface with the deformed part of the fixing part, thereby enhancing the locking force, reducing the possibility of falling off, and improving the assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the partial disassembly structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the partial sectional structure of the present utility model;

[0018] In the figure: 1, nut body; 2, annular boss; 3, embossing tooth assembly; 4, auxiliary structure;

[0019] 301, embossing tooth body; 302, triangular protrusion; 303, guiding groove;

[0020] 401, guiding ring frame; 402, sliding groove; 403, limiting hole; 404, limiting groove; 405, guiding block; 406, bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0022] A novel anti - shedding rivet nut, see Figures 1 to 3 , including a nut body 1, an annular boss 2 is fixedly connected to the upper end of the nut body 1, a knurled tooth assembly 3 is sleeved outside the annular boss 2, and an auxiliary structure 4 is arranged at the lower end of the knurled tooth assembly 3;

[0023] The auxiliary structure 4 includes a guiding ring frame 401, the guiding ring frame 401 is fixed to the lower end of the knurled tooth assembly 3, a group of sliding grooves 402 are symmetrically arranged inside the guiding ring frame 401, a group of limiting holes 403 are symmetrically arranged outside the guiding ring frame 401, a limiting groove 404 is arranged inside the nut body 1, and a group of guiding blocks 405 are symmetrically and fixedly connected to the outer surface of the annular boss 2. Among them, the knurled tooth assembly 3 and the limiting groove 404 form a clamping structure through the guiding ring frame 401, the guiding ring frame 401 and the guiding blocks 405 form a sliding structure through the sliding grooves 402, and a group of bolts 406 are symmetrically clamped inside the nut body 1. Further, a threaded connection is provided between the nut body 1 and the bolts 406, and the end of the bolt 406 is fitted and clamped inside the limiting hole 403. In the present utility model, by disassembling the bolt 406, the end of the bolt 406 is effectively separated from the limiting hole 403. At this time, the guiding ring frame 401 is not restricted, and the knurled tooth assembly 3 and the guiding ring frame 401 can effectively move upward along the guiding blocks 405, thereby realizing the disassembly of the knurled tooth assembly 3, facilitating the replacement of knurled tooth assemblies 3 with different thicknesses, without the need for overall replacement, improving the practicability of the rivet nut. The arrangement of the sliding grooves 402 prevents the guiding ring frame 401 from colliding with the guiding blocks 405 and enables the smooth sliding of the guiding ring frame 401.

[0024] It should be noted that the knurled tooth assembly 3 includes a knurled tooth body 301, the knurled tooth body 301 is sleeved outside the bottom end of the annular boss 2, and a number of triangular protrusions 302 are evenly distributed on the surface of the knurled tooth body 301. Among them, a fixed connection is provided between the knurled tooth body 301 and the triangular protrusions 302, the number of convex teeth in the knurled tooth body 301 is the same as the number of triangular protrusions 302, and a group of guiding grooves 303 are symmetrically arranged inside the knurled tooth body 301. Further, a matching clamping is provided between the guiding grooves 303 and the guiding blocks 405, and the guiding blocks 405 and the annular boss 2 are integrally formed. In the present utility model, the cooperation between the guiding grooves 303 and the guiding blocks 405 is used to quickly position the knurled tooth body 301, thereby facilitating the accurate screwing of the bolt 406 into the limiting hole 403 of the guiding ring frame 401 at the lower end of the knurled tooth body 301. The triangular protrusions 302 on the surface of the knurled tooth body 301 increase the contact surface with the deformed part of the fixing part, thereby enhancing the locking force, reducing the possibility of shedding, and improving the assembly quality.

[0025] Working principle: By removing the bolt 406, the end of the bolt 406 is disengaged from the limit hole 403. At this time, the guide ring frame 401 is not restricted, and the embossed tooth assembly 3 and the guide ring frame 401 can move upward along the guide block 405, thereby realizing the disassembly of the embossed tooth assembly 3, facilitating the replacement of the embossed tooth assembly 3 with different thicknesses without the need for overall replacement. After replacement, the embossed tooth assembly 3 quickly positions the embossed tooth body 301 through the cooperation between the guide groove 303 and the guide block 405, so as to facilitate the accurate screwing of the bolt 406 into the limit hole 403 of the guide ring frame 401 at the lower end of the embossed tooth body 301. The aperture of the preset hole of the fixing part is slightly smaller than the circular diameter of the top end of the embossed tooth body 301 of the swaging nut. Through pressure, the embossed tooth body 301 of the swaging nut is squeezed into the preset hole in the fixing part, causing plastic deformation around the preset hole. The deformed part of the fixing part is squeezed into the recess between the annular boss 2 and the embossed tooth body 301 and the interval between the convex teeth of the embossed tooth body 301. The deformed part in the recess can provide a locking force, and the deformed part between the convex teeth can prevent the nut from loosening by rotating around the axis. The triangular convex blocks 302 on the surface of the embossed tooth body 301 increase the contact surface with the deformed part of the fixing part, thereby enhancing the locking force.

[0026] The embodiments disclosed in the present utility model are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A novel anti-dropping self-clinching nut, comprising a nut body (1), characterized in that: The upper end of the nut body (1) is fixedly connected with an annular boss (2), the outer portion of the annular boss (2) is sleeved with an embossed tooth assembly (3), and the lower end of the embossed tooth assembly (3) is provided with an auxiliary structure (4); The auxiliary structure (4) comprises a guide ring frame (401), the guide ring frame (401) is fixed to the lower end of the embossed tooth assembly (3), a group of slide grooves (402) are symmetrically opened on the inner side of the guide ring frame (401), a group of limiting holes (403) are symmetrically opened on the outer side of the guide ring frame (401), a limiting groove (404) is opened on the inner side of the nut body (1), a group of guide blocks (405) are symmetrically fixed to the outer surface of the annular boss (2), and a group of bolts (406) are symmetrically engaged inside the nut body (1).

2. The novel anti-falling self-clinching nut according to claim 1 is characterized in that: The embossed tooth assembly (3) forms a snap-fit ​​structure through a guide ring frame (401) and a limiting groove (404), and the guide ring frame (401) forms a sliding structure through a sliding groove (402) and a guide block (405).

3. The novel anti-falling self-clinching nut according to claim 1 is characterized in that: The nut body (1) and the bolt (406) are threadedly connected, and the end of the bolt (406) is matched and engaged in the interior of the limiting hole (403).

4. The novel anti-falling self-clinching nut according to claim 1 is characterized in that: The embossed tooth assembly (3) comprises an embossed tooth body (301), which is sleeved on the outside of the bottom end of the annular boss (2), a plurality of triangular protrusions (302) are evenly distributed on the surface of the embossed tooth body (301), and a group of guide grooves (303) are symmetrically opened on the inner side of the embossed tooth body (301).

5. The novel anti-falling self-clinching nut according to claim 4 is characterized in that: The embossed tooth body (301) and the triangular protrusion (302) are fixedly connected, and the number of protruding teeth in the embossed tooth body (301) is the same as the number of triangular protrusions (302).

6. The novel anti-falling self-clinching nut according to claim 4, characterized in that: The guide groove (303) and the guide block (405) are matched and engaged with each other, and the guide block (405) and the annular boss (2) are integrally formed.

Images