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Insert type knurled nut

A technology of embossing and nuts, applied in the direction of nuts, threaded fasteners, connecting components, etc., can solve problems such as easy loosening or even falling off, and achieve the effect of enhancing anti-loosening performance, increasing strength, and increasing friction

Pending Publication Date: 2018-08-31
浙江洪扬汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hexagonal surface of the flush nut is smooth, and it is easy to loosen or even fall off when subjected to bumps and vibrations

Method used

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  • Insert type knurled nut
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  • Insert type knurled nut

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] refer to figure 1 , figure 2 , image 3 and Figure 4 , a sheet-shaped embossed nut according to the present invention, comprising a screw head 1, a nut body 2 and a riveting interface 3, the screw head 1 is a hexagonal screw head, and the upper and lower ends of the nut body 2 are riveted with the screw head 1 and the riveting joint respectively. The mouth 3 is connected, the guide chamber 4 is formed between the screw head 1 and the nut body 2, the first through hole 5 is provided through the screw head 1 and the nut body 2, and the inner wall of the first through hole 5 Internal threads are provided on the rivet interface 3, and a second through hole 6 is arranged in the riveting interface 3. The first through hole 5 communicates with the second through hole 6, and the diameter of the first through hole 5 is smaller than that of the second through hole. 6, the side of the screw head 1 is provided with a first embossing pattern 11, the side of the riveting port 3 ...

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Abstract

The invention discloses an insert type knurled nut comprising a screw head, a nut body and a riveting opening. The upper end and the lower end of the nut body are connected with the screw head and theriveting opening correspondingly. A guide cavity is formed between the screw head and the nut body. A first through hole is arranged in the screw head and the nut body in a running through manner. The inner wall of the first through hole is provided with internal threads. A second through hole is formed in the riveting opening. The first through hole communicates with the second through hole. Themetal which is deformed due to pressure squeezes into the guide cavity and an annular groove, the riveting opening which is expanded open is tightly attached to the bottom face of sheet metal, and therefore self-fastening between the nut and the sheet metal is achieved; the annular groove is made to be inclined downwards, so that the anti-looseness performance of the nut is improved; due to the arrangement of first knurls and second knurls, the friction is increased, and the torsion resistance of the nut is improved; the stress concentration degree is lowered through a first circular truncated cone portion, and the strength of a transition section between the screw head and the nut body is improved; and the overall insert type knurled nut is easy to install, and a jig is not needed.

Description

【Technical field】 [0001] The invention relates to the technical field of nuts, in particular to the technical field of a sheet-shaped embossed nut. 【Background technique】 [0002] With the development of automobile lightweight technology, lightweight can be achieved by using aluminum alloy materials and more non-metallic parts on the body, thereby reducing the weight of the body to achieve better energy-saving and environmental protection effects. [0003] At present, most of the aluminum alloy car bodies adopt the structure of aluminum alloy profile skeleton combined with skin. Sheet nuts are also called insert-type flush nuts or embedded nuts, which can be placed into the sheet metal of the car body skin structure. The hexagonal surface is pressed into the sheet metal in parallel and then occludes with the sheet metal surface, and the other cylindrical surface is flush with the sheet metal . After installation, the two sides are flush to enhance the function and decorati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B37/04
CPCF16B37/048
Inventor 陈震
Owner 浙江洪扬汽车零部件有限公司
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