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Rivet and vehicle with same

A technology of rivets and nail rods, which is applied in the direction of rivets, screws, threaded fasteners, etc., which can solve the problems of large bending angle, low load-bearing strength, and easy bending and movement of the lower sheet metal, so as to reduce the quantity and lighten the vehicle. Weight, the effect of improving safety

Pending Publication Date: 2022-01-11
BEIJING AUTOMOBILE RES GENERAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in actual working conditions, the load-bearing strength of the rivet is small. In the process of cross-stretching, shearing, and peeling, the shank of the rivet is easy to bend and move under the action of the load, and the angle of the bending part of the lower sheet changes slightly. Large, as the gap increases, the rivet is prone to pull off and peel off from the plate

Method used

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  • Rivet and vehicle with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The rivet 100 in this embodiment is a semi-hollow self-piercing rivet 100 , and the rivet 100 includes: a nail head 1 and a nail shank 2 .

[0049] Wherein, the nail head 1 is formed in a circular shape, and the nail shaft 2 is also formed in a cylindrical shape. At least part of the nail shank 2 along the length direction is formed as an expansion deformation part 20, and a deformation cavity 23 is defined in the expansion deformation part 20. direction and gradually decreases in the direction away from the nail head 1. A plurality of reinforcing teeth 22 are formed on the outer peripheral wall of the expansion deformation part 20, and the plurality of reinforcing teeth 22 are divided into 2 tooth groups, and the 2 tooth groups are arranged at intervals along the axial direction of the nail rod 2, and each tooth group includes 3 teeth along the The reinforcement teeth 22 arranged at uniform intervals in the circumferential direction of the nail shank 2 are formed as t...

Embodiment 2

[0054] The general structure and forming process of the rivet 100 of this embodiment are the same as those of the rivet 100 in the first embodiment, the difference is that the number N of reinforcing teeth 22 in each tooth group is 4, and 4 reinforcing teeth 22 They are evenly spaced along the axial direction of the nail rod 2 .

Embodiment 3

[0056] The general structure and forming process of the rivet 100 of this embodiment are the same as those of the rivet 100 in the second embodiment, the difference is that the sum of the radians of all reinforcing teeth 22 in each tooth group corresponds to the circumference of the shank 2 The ratio a of radians is 3 / 4.

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Abstract

The invention discloses a rivet and a vehicle with the same. The rivet comprises a rivet head and a rivet rod; the end, in the length direction, of the rivet rod is connected with the rivet head, at least part, in the length direction, of the rivet rod forms an expansion deformation part, a reinforcing convex part is formed on the peripheral wall of the expansion deformation part, and the rivet rod and the rivet head are integrally formed. According to the rivet disclosed by the invention, the reinforcing convex part is arranged on the expansion deformation part of the rivet rod, so that on one hand, the roughness of the surface of the rivet rod and the surface area of the rivet rod can be increased, and the friction force between the rivet rod and a riveted part after riveting is completed is increased; and on the other hand, due to the fact that the rivet is extruded by external force during riveting, the reinforcing convex part on the surface of the rivet rod can be embedded into the riveted part under the action of extrusion force, the rivet can be prevented from being separated from the riveted part, the connection strength and the connection stability of the rivet and the riveted part are enhanced, and the connection reliability of two riveted parts is improved.

Description

technical field [0001] The invention relates to the technical field of mechanical connection, in particular to a rivet and a vehicle with the same. Background technique [0002] It is pointed out in related technologies that with the increasingly mature lightweight of automobiles, semi-tubular rivets and hollow rivets have been widely used in the riveting process of the automobile industry, such as for the connection between steel, aluminum and composite materials, and will not damage the surface of the material The coating can also prevent electrochemical corrosion between materials. The riveting technology has the advantages of high maturity, low cost and high efficiency. [0003] However, in actual working conditions, the load-bearing strength of the rivet is small. In the process of cross-stretching, shearing, and peeling, the shank of the rivet is easy to bend and move under the action of the load, and the angle of the bending part of the lower sheet changes slightly. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B19/08
CPCF16B19/086
Inventor 芮燕杰王智文马治国栗娜敬敏
Owner BEIJING AUTOMOBILE RES GENERAL INST
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