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Anti-theft nut

An anti-theft nut and nut technology, applied to nuts, bolts, threaded fasteners, etc., can solve the problems of high manufacturing cost, complex structure, and many parts, etc., and achieve the effect of reducing manufacturing cost and simple structure.

Inactive Publication Date: 2009-05-13
宁波南螺建通紧固件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two disclosed "anti-theft nut" patented products both have good anti-theft performance, but both have the disadvantages of many parts, complicated structure and high manufacturing cost.

Method used

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  • Anti-theft nut

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and specific embodiment the anti-theft nut of the present invention is further described:

[0015] As shown in the drawings, the anti-theft nut of the present invention includes a nut body 1 and a central threaded hole 2. The nut body is set as a truncated cone, and several shallow dimples 3 are arranged on the conical surface of the nut truncated cone.

[0016] As an improvement, the depth of the bottom of the shallow dimple 3 is 2-3 mm.

[0017] As an improvement, the several shallow dimples 3 are equidistantly arranged on the same horizontal plane of the conical surface.

[0018] As a preferred solution, the number of said shallow dimples 3 is 3-5.

[0019] As the best solution, the number of said shallow dimples 3 is three.

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Abstract

The invention discloses a burglarproof nut, which comprises a nut body and a central threaded hole, wherein the nut body is arranged as a cone frustum, the conical surface of the nut cone frustum is provided with a plurality of retuse dimples. The burglarproof nut has the following advantages: the nut body is arranged as the cone frustum, so as to ensure that the shape of the nut is a big end down circular conical surface; the circular conical surface of the nut is provided with the plurality of the retuse dimples; when the nut is screwed in, the screwed torque force turns downwards and sidelong, and the retuse dimples play roles in acting points; when the nut is screwed out, the screwed torque force turns upwards and sidelong, the acting point is out of action, the aim of burglarproof is achieved; simultaneously, the nut has an extremely simple structure and the manufacturing cost is reduced greatly.

Description

Technical field: [0001] The invention belongs to fasteners, in particular to bolt-type fasteners, in particular to an anti-theft nut. Background technique: [0002] Fasteners are indispensable parts for connection between mechanical parts and device fixing, especially for fasteners in the field infrastructure, and their safety is even more important, such as railways, highway bridges, Bolt and nut fasteners used in infrastructure such as transmission towers and microwave communication towers. Since the existing commonly used fastener nuts are generally square, hexagonal or multi-angle nuts with corners, such nuts can be easily removed with ordinary tools. Therefore, they are often stolen or destroyed by criminals. Create extremely unsafe hidden dangers to these infrastructures or directly destroy them. In order to solve this problem, many people have researched and developed a variety of anti-theft nuts, such as the invention patent "anti-theft nut" disclosed by the State ...

Claims

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Application Information

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IPC IPC(8): F16B41/00F16B37/00
Inventor 孙浩儿
Owner 宁波南螺建通紧固件有限公司
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