Antitheft fastener and dismounting and mounting tool and method thereof

Abstract

The invention provides an antitheft fastener and a dismounting and mounting tool and method thereof, and belongs to the technical field of connectors and fasteners. The antitheft fastener and the dismounting and mounting tool and method thereof solve the problems of poor antitheft effect and unstable dismounting and mounting of an existing fastener. The antitheft fastener comprises a round rod shaped threaded rod which is provided with outer screw threads, and a circular ring shaped screw thread which is integrally structured with the threaded rod and is coaxially positioned on the outer wallof the top end of the threaded rod, wherein a circular dismounting and mounting groove which is coaxially arranged with the threaded rod is formed in the top end of the threaded rod; a circular ring shaped aligning groove is coaxially formed in the wall of the dismounting and mounting groove, and the cross section of the aligning groove is of an inward concave arc shaped structure; a plurality ofconcave point shaped outer locking grooves, which are uniformly distributed by equal angle in the circumferential direction of the threaded rod, are deeply formed in the wall of the aligning groove; and the walls of the outer locking grooves are of inward concave spherical structure. The antitheft fastener further comprises a circular rod shaped positioning rod of which the bottom end is fixed tothe bottom of the dismounting and mounting groove; the positioning rod and the threaded rod are coaxially arranged; the top end of the positioning rod is aligned to the top end of the threaded rod; and the wall of the positioning rod and the wall of the dismounting and mounting groove are arranged at an interval. The antitheft fastener is good in antitheft effect; and the dismounting and mountingprocesses are convenient and stable.

Description

technical field [0001] The invention belongs to the technical field of connectors and fasteners, and relates to an anti-theft fastener, a disassembly tool and a disassembly method thereof. Background technique [0002] Traditional fasteners are generally bolts with straight, cruciform, external hexagonal or internal hexagonal heads, and can be screwed with various screwdrivers or wrench tools. [0003] In order to avoid the convenience of ordinary screwdrivers or wrench tools, some of the existing fasteners with anti-theft function have the bolt head in an unconventional shape, for example, the application number is 201410833644. Firmware" Chinese invention patent application, which sets the screw head as an inner pentagonal structure to achieve anti-theft effect, and some set the bolt head as an irregular shape, for example, the application number is 201610718306.X, and the name is "with Fastener with anti-theft function” Chinese invention patent application, which sets ir...

AI Technical Summary

Problems solved by technology

[0005] 2. Since the projection of the disassembly part along the axial direction of the bolt is a non-circular structure, through observation and selection of traditional tools of approximate specifications, after inserting the traditional tool into the disassembly part and rotating the traditional tool, it is still easy to find the force point. In this way, the bolts are screwed, or directly screwed by brute force after finding the stress point; therefore, there are certain safety hazards;

[0006] 3. During the normal screwing and disassembling process, the tool is easy to slip on the bolt, so the screwing operation is inconvenient

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