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Self-tightening screw

A screw and tightening technology, applied in the direction of screws, nuts, bolts, etc., can solve the problems of large number of screws, unrealistic routine inspection of screws, hidden dangers caused by safe use of equipment, etc., and achieves obvious self-tightening function effect and simple structure. , the effect of long service life

Inactive Publication Date: 2016-08-24
TIANJIN DARENSHE METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Screw is a commonly used hardware fastener with a wide range of applications. As an important part for connecting and fixing mechanical parts, the stability of its use is related to the safety of the overall operation of mechanical equipment. The number of screws used is huge. Routine inspection is unrealistic. In order to avoid hidden dangers caused by loose screws to the safe use of equipment, it is necessary to improve and perfect the existing screw structure. For example, the screw has a self-tightening structure. When the screw nut is subjected to external pressure , the screws will not loosen or even tighten more and more

Method used

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  • Self-tightening screw
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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0020] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should no...

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PUM

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Abstract

The invention provides a self-tightening screw which comprises a nut and a thread screw rod and further comprises self-tightening pieces and a tightening ring. The self-tightening pieces are metal pieces with sharp corners. The number of the self-tightening pieces is 4-20. The ends of the self-tightening pieces are metal substrates made of the same material. Prestress scratch grooves are formed in the joints of the metal substrates and the self-tightening pieces. The tightening ring is a metal sliding sleeve with prestress. The outer diameter of the metal substrates of the self-tightening pieces is consistent with the inner diameter of the tightening ring. The self-tightening screw has the advantages that the metal self-tightening pieces can enter the surface of a fixing body in a cutting mode along with the thread screw rod, the tightening ring provides prestress from the bottoms of the self-tightening pieces, it is guaranteed that when bearing pressure, the self-tightening pieces further enter the surface of the fixing body in a cutting mode, the self-tightening effect is achieved, and the screw is simple in structure, easy to machine and manufacture, remarkable in self-tightening effect, long in service life and the like.

Description

technical field [0001] The invention belongs to the technical field of hardware fasteners, and in particular relates to a self-tightening screw. Background technique [0002] Screw is a commonly used hardware fastener with a wide range of applications. As an important part for connecting and fixing mechanical parts, the stability of its use is related to the safety of the overall operation of mechanical equipment. The number of screws used is huge. Routine inspection is unrealistic. In order to avoid hidden dangers caused by loose screws to the safe use of equipment, it is necessary to improve and perfect the existing screw structure. For example, the screw has a self-tightening structure. When the nut of the screw is under external pressure , the screws will not loosen or even tighten more and more. Contents of the invention [0003] In view of this, the present invention aims to provide a self-tightening screw to realize the self-tightening function that the screw will ...

Claims

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Application Information

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IPC IPC(8): F16B39/282F16B39/286
CPCF16B39/282F16B39/286
Inventor 张鑫
Owner TIANJIN DARENSHE METAL PROD