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Combined anti-theft bolt with protective cover

A technology of anti-theft bolts and protective covers, which is applied to bolts, nuts, threaded fasteners, etc., can solve the problems of loss of anti-theft performance, damage, and unsatisfactory anti-theft effect of anti-theft bolts, and achieve good anti-theft performance and good water resistance.

Inactive Publication Date: 2019-08-09
海盐鼎丰紧固件股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-theft effect of the existing anti-theft bolts is not ideal enough, it cannot meet the needs well, and it is easy to be damaged by the positive and lose the anti-theft performance

Method used

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  • Combined anti-theft bolt with protective cover

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Embodiment Construction

[0021] refer to figure 1 , a combined anti-theft bolt with a protective cover according to the present invention, comprising a bolt head 1, a screw rod 15, a protective cover 2, an annular groove 11, a mounting groove 21, a block 23, and a torsion spring 22, and the bolt head 1 is hexagonal A screw rod 15 is fixed at the center of the bottom of the bolt head 1, and an annular groove 11 is provided on the side wall of the bolt head 1. The outer cover of the bolt head 1 is covered with a protective cover 2, which is a cylindrical cover with an opening downward. , the inner diameter of the protective cover 2 is larger than the circumscribed circle of the bolt head 1, and the inner wall of the protective cover 2 is provided with several installation grooves 21, all the installation grooves 21 are located on the same circumferential surface, and a torsion spring 22 is installed in the installation groove 21 , the torsion spring 22 is connected with a block 23, and the block 23 exte...

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PUM

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Abstract

The invention discloses a combined anti-theft bolt with the protective cover. The combined anti-theft bolt comprises a bolt head, a screw rod, a protective cover, annular grooves, mounting grooves, clamping blocks and torsional springs, wherein the bolt head is in a hexagonal shape, the screw rod is fixed to the center of the bottom of the bolt head, a circle of annular groove is formed in the side wall of the bolt head, the protective cover covers outside the bolt head, the protective cover is a cylindrical cover body with a downward opening, and the inner diameter of the protective cover islarger than the circumcircle of the bolt head, the multiple mounting grooves are formed in the inner wall of the protective cover, the mounting grooves are positioned on the same circumferential surface, the torsional springs are arranged in the mounting grooves, the torsional springs are connected with the clamping blocks, and the clamping blocks extend into the annular grooves. The protective cover covers the bolt head, and the clamping blocks are matched with the annular grooves, so that the protective cover and the bolt head are not easy to separate and slip between the protective cover and the bolt head, the bolt head cannot be screwed easily, and the bolt has good anti-theft performance.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of fasteners, in particular to the technical field of anti-theft bolts. [0003] 【Background technique】 [0004] Bolt is a kind of fastener commonly used, and its application is comparatively extensive. Bolts are used in fields such as high-speed rail, oil exploration, and wind power, and sometimes some bolts are required to have anti-theft functions. The anti-theft effect of the existing anti-theft bolts is not ideal enough, and cannot meet the demand well, and is easy to be damaged by the opposite direction and lose the anti-theft performance. [0005] 【Content of invention】 [0006] The purpose of the present invention is to solve the problems in the prior art, and propose a combined anti-theft bolt with a protective cover, which can make the bolt have good anti-theft performance and is not easy to be damaged in a targeted manner. [0007] In order to achieve the above object, the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B41/00F16B37/14
CPCF16B37/14F16B41/005
Inventor 姜明辉
Owner 海盐鼎丰紧固件股份有限公司
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