Expansion riveting nut tool

Abstract

The invention discloses an expansion riveting nut tool. The expansion riveting nut tool comprises an expansion riveting head and a nut body. The lower end of the expansion riveting head is provided with an expansion riveting end, a spring piece arranged on the expansion riveting head in a sleeving mode is arranged above the expansion riveting end, and the upper end of the spring piece abuts against the upper end of the expansion riveting head. A flanging table is arranged at the upper end of the nut body, and an expansion riveting hole allowing the expansion riveting end to penetrate through the nut body is formed in the flanging table, so that the flanging table forms an outer flanging abutting against the surface of a plate after the expansion riveting end penetrates through the expansion riveting hole; the problem that a traditional pressure riveting process cannot meet the requirement for larger torque can be solved, the expansion riveting end at the lower end of the expansion riveting head is pressed into the nut body so that the nut can be pressed to form an outer flange abutting against a plate, and the advantage of larger thrust is achieved through combination of the outer flange and the plate; the spring piece arranged on the expansion riveting head in a sleeving mode can exert thrust in the reverse direction of the expansion riveting head at the moment of expansion riveting of a plate and the nut body, so that the performance of the machined plane meets the requirement, the riveting process level is higher, and the practical value is high.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal processing, and in particular to a tooling for expanding rivets and nuts. Background Art

[0002] In the fields of communications, automobiles, aviation, etc., it is often necessary to rivet nuts on the riveted parts. Since the base material of the riveted parts is relatively soft, the push-pull force and torque that the riveted nuts can withstand are limited. At the same time, standard nuts are all processed by pressure riveting, and the torque and thrust of the nuts of specified sizes are standard. When subjected to large push-pull force or torque, the pressure riveted nuts and expansion riveted nuts are prone to rotation and falling off, or deformation of the riveted parts.

[0003] The invention patent with application number 200420102955.X involves a reverse pressure rivet nut and a combination thereof, which are used to achieve good conductivity and corrosion resistance of electrical connections between equipment and racks, and between racks and parts, so as to solve the problems of easy rust or complex process in the prior art.

[0004] The invention patent with application number 200920133209.X involves a wall-mounted embedded nut for a flat-screen TV, which adopts a positioning piece fixed on the outer periphery of the nut to increase the connection force between the nut and the rear shell.

[0005] However, the above two patents do not solve the problem that the existing self-clinching nuts and expansion rivet nuts are prone to rotation and falling off when subjected to large push-pull forces or torques. Summary of the invention

[0006] In view of the defects in the prior art, the purpose of the present invention is to provide a rivet nut tooling that can solve the problem that the traditional riveting process cannot meet the greater torque requirements.

[0007] The technical solution adopted by the present invention is: a tool for expanding rivets and nuts, including an expanding rivet head and a nut body; the lower end of the expanding rivet head is provided with an expanding rivet end, and a spring member sleeved on the expanding rivet head is provided above the expanding rivet end, and the upper end of the spring member abuts against the upper end of the expanding rivet head; the upper end of the nut body is provided with a flanging table, and the flanging table is provided with an expanding rivet hole for the expanding rivet end to pass through the nut body, so that the flanging table forms an outer flange abutting against the surface of the plate after the expanding rivet end passes through the expanding rivet hole.

[0008] In the present technical solution, after the rivet end at the lower end of the rivet head is pressed into the nut body, the nut is compressed to form an outer flange that abuts against the plate, and the combination with the plate through the outer flange has a greater thrust advantage; at the same time, the spring member sleeved on the rivet head can apply a thrust in the opposite direction to the plate and the nut body at the moment of riveting, so that the performance of the plane after processing meets the requirements and the riveting process level is higher.

[0009] Preferably, a limiting ring protrusion abutting against the spring member is provided above the expansion rivet head corresponding to the spring member.

[0010] Preferably, the lower end of the expansion rivet head is sleeved with a spring support which abuts against the lower end of the spring member.

[0011] Preferably, the upper end of the expansion riveting end is provided with a positioning step which abuts against the spring support.

[0012] Preferably, a flanging step is provided at the lower end of the expansion riveting end for causing the flanging platform to flanging outwards.

[0013] The beneficial effects of the present invention are as follows: the present invention can solve the problem that the traditional riveting process cannot meet the greater torque demand, and the rivet end at the lower end of the rivet head is pressed into the nut body so that the nut is compressed to form an outer flange that abuts against the plate, and the outer flange is combined with the plate to have a greater thrust advantage; the spring member sleeved on the rivet head can apply a thrust in the opposite direction to the plate and the nut body at the moment of riveting, so that the performance of the plane after processing meets the demand, the riveting process level is higher, and it has higher practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0015] Figure 1 It is a schematic diagram of the assembly of the expansion rivet nut tooling provided in an embodiment of the present invention.

[0016] Figure 2 It is a three-dimensional assembly diagram of the expansion rivet nut tooling provided in an embodiment of the present invention.

[0017] Reference numerals: rivet head 100 , rivet end 110 , positioning step 111 , flanging step 112 , limiting ring protrusion 120 , nut body 200 , flanging platform 210 , rivet hole 220 , spring member 300 , spring support 400 . DETAILED DESCRIPTION

[0018] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0019] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0020] Embodiment 1

[0021] like Figure 1 and Figure 2 As shown, a specific embodiment of the present invention provides a rivet nut tooling for improving riveting efficiency and quality; specifically, it comprises a rivet head 100 and a nut body 200; a rivet end 110 is provided at the lower end of the rivet head 100, and a spring member 300 is provided above the rivet end 110 and sleeved on the rivet head 100, and the upper end of the spring member 300 abuts against the upper end of the rivet head 100; a flanging table 210 is provided at the upper end of the nut body 200, and a rivet hole 220 is provided in the flanging table 210 for the rivet end 110 to pass through the nut body 200, so that the flanging table 210 forms an outer flange abutting against the surface of the plate after the rivet end 110 passes through the rivet hole 220.

[0022] like Figure 1 and Figure 2 As shown, through the above arrangement, in this embodiment, the expansion riveting tool adopts a combination of an expansion rivet head 100 and a nut body 200 to implement riveting; the expansion rivet end 110 arranged at the lower end of the expansion rivet head 100 can cooperate with the nut, and when it is pressed into the nut body 200, the nut is compressed to form an outer flange that abuts against the plate, and the outer flange can be combined with the plate, thereby having a greater thrust advantage; at the same time, the spring member 300 sleeved on the expansion rivet head 100 can apply a thrust in the opposite direction to it at the moment when the plate and the nut body 200 are expansion-riveted, so that the plane can meet the requirements after the processing is completed, and the riveting process level is higher.

[0023] As mentioned above, after the expansion rivet end 110 passes through the nut body 200, the reverse elastic force is applied by the spring member 300 while the nut body 200 is combined with the plate. In order to ensure that the spring member 300 generates thrust after being compressed, the present embodiment is provided with a limit ring protrusion 120 that abuts against the spring member 300 above the expansion rivet head 100 corresponding to the spring member 300, so that the expansion rivet end 110 can be compressed to generate thrust after passing through the nut; in addition, the present embodiment is also provided with a spring support 400 that abuts against the lower end of the spring member 300 at the lower end of the expansion rivet head 100. In this way, the thrust generated by the spring member 300 is applied to the plate through the spring support 400, so that the performance of the plane after processing meets the requirements.

[0024] like Figure 1 and Figure 2 As shown, the present embodiment further optimizes the structure of the rivet end 110. Since a spring holder 400 is provided at the lower end of the spring member 300, a positioning step 111 is provided at the upper end of the rivet end 110 in the present embodiment, which is against the spring holder 400, so as to ensure the stability of the spring holder 400. In addition, a flanging step 112 is provided at the lower end of the rivet end 110 for flanging the flanging platform 210 outward. When the flanging step 112 passes through the nut body 200, the flanging platform 210 can be completely flanging outward to form a flanging structure, thereby ensuring the stability of the combination of the remaining plates.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A tool for expanding rivet nuts, characterized in that: It comprises a rivet head (100) and a nut body (200); The lower end of the expansion rivet head (100) is provided with an expansion rivet end (110), and a spring member (300) sleeved on the expansion rivet head (100) is provided above the expansion rivet end (110), and the upper end of the spring member (300) abuts against the upper end of the expansion rivet head (100); A flanging platform (210) is provided at the upper end of the nut body (200), and a rivet hole (220) is provided inside the flanging platform (210) for the rivet end (110) to pass through the nut body (200), so that the flanging platform (210) forms an outer flange that abuts against the surface of the plate after the rivet end (110) passes through the rivet hole (220).

2. The expansion rivet nut tooling according to claim 1, characterized in that: A limiting ring protrusion (120) is provided above the expansion rivet head (100) corresponding to the spring member (300) and abuts against the spring member (300).

3. The expansion rivet nut tooling according to claim 1, characterized in that: The lower end of the expansion rivet head (100) is sleeved with a spring support (400) which abuts against the lower end of the spring member (300).

4. The expansion rivet nut tooling according to claim 3, characterized in that: The upper end of the expansion riveting end (110) is provided with a positioning step (111) that abuts against the spring support (400).

5. The expansion rivet nut tooling according to claim 1, characterized in that: The lower end of the expansion riveting end (110) is provided with a flanging step (112) for causing the flanging platform (210) to flanging outwards.

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