Anti-loosening thread structure

An anti-loosening and threaded technology, applied in the direction of threaded fasteners, screws, nuts, etc., can solve the problems of unable to improve the connection strength and loosening, and achieve the effects of simple structure, reduced manufacturing cost, and uniform load distribution

Inactive Publication Date: 2013-09-25
新疆德坤建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the use of thick nuts with many turns does not improve the connection strength
In this way, under the condition of working vibration load, ordinary threaded fasteners can easily overcome the locking force on the threaded contact surface to rotate, and then loosen.

Method used

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  • Anti-loosening thread structure
  • Anti-loosening thread structure
  • Anti-loosening thread structure

Examples

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Embodiment Construction

[0014] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0015] like image 3 , Figure 4 As shown, the anti-loosening thread structure includes a bolt 1, a coupling piece 2, and a connecting body 3. The bolt 1 is provided with an external thread 5, and the connecting body 3 is a nut or a tapping coupling, and the tapping coupling is opened. There is a through hole, the through hole or the nut is provided with an internal thread 4, and the root side of the internal thread 4 is provided with an inwardly recessed arc surface 6, the arc surface is an arc angle of 45 degrees, and the arc surface The radius is the thread pitch, and the center of the arc surface is the crest of the relative internal thread. The arc surface of...

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Abstract

The invention discloses an anti-loosening thread structure which comprises a bolt, a connecting piece and a connection main body. The bolt is provided with an external thread. The anti-loosening thread structure is characterized in that the connection main body is a nut or a tapping connecting piece, the tapping connecting piece is provided with a through hole, an internal thread is arranged in the through hole or a nut hole, an arc surface recessed inwards is arranged on one side of the root of the internal thread, and the bolt is in threaded connection with the nut or the tapping connecting piece from one side of the root provided with the arc surface. The anti-loosening thread structure has the advantages of being simple in structure, firm to connect and uniform in load.

Description

technical field [0001] The invention belongs to the field of fasteners, in particular to an anti-loosening thread structure. Background technique [0002] Threaded connection is the most widely used connection in mechanical products, but it will always loosen due to vibration, relaxation and other reasons during use. Loose connection will cause serious consequences, so thread loosening has always been a major problem plaguing the machinery industry. like figure 1 As shown, when ordinary nuts are used, the distribution of axial load among the turns of the threaded threads is uneven for ordinary conventional 60-degree triangular threads. The threaded meshing surface bears 70-80% of the load, while the next few meshing surfaces bear very little load, and the subsequent turns decrease gradually (such as figure 2 ). Since the main force of ordinary threaded fasteners is only the contact of the first and second threads of the nut, the rest of the threads are basically not str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/30
Inventor 王晓东王卫兵何明生宋传新周胜
Owner 新疆德坤建材有限责任公司
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