Anti-disassembly fastener

Abstract

The invention discloses an anti-disassembly fastener. The anti-disassembly fastener comprises an anti-disassembly nut and a disassembly sleeve; the anti-disassembly nut comprises a hexagon nut body and an anti-disassembly convex part; six corners of the hexagonal nut main body are sharp corner parts, and one of two side edges of each sharp corner part is a driving side; the anti-disassembly convex parts are correspondingly arranged on the driving sides of the sharp corner parts, and the anti-disassembly convex parts and the driving sides are connected into a whole to form convex driving parts; the disassembly sleeve is provided with a disassembly hole, the shape of an inner cavity of the disassembly hole is matched with the outer contour of the anti-disassembly nut, so that the anti-disassembly nut is sleeved with the disassembly hole of the disassembly sleeve, and when the disassembly sleeve is rotated, the anti-disassembly nut can be synchronously driven to rotate; and the anti-disassembly convex part is in a right triangle shape. The fastener is high in transmission efficiency, not prone to slipping, reliable in assembly and high in anti-disassembly performance.

Description

technical field [0001] The invention belongs to the technical field of fastener manufacturing, and in particular relates to an anti-disassembly fastener of a composite structure for automobiles. Background technique [0002] Fasteners are a type of mechanical parts that are used for fastening connections and are widely used. All kinds of fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters and supplies. [0003] There are many types of driving methods for existing fasteners. Since the products are mostly made of round wires, and the hexagonal driving method can be tightened (loosen) in multiple directions, the driving method of using ordinary hexagonal sockets to drive conventional hexagonal nuts has become the market. Primary fastener actuation method. Such as figure 2 The ordinary hexagonal socket 10 shown, for the hexagonal driving structure of the ordinary hexagonal socket 10 to th...

AI Technical Summary

Problems solved by technology

The 60° sharp corner of the conventional hexagonal nut 20 has low torque transmission efficiency; and the sharp point 21 of the 60° sharp corner of the conventional hexagonal nut 20 is stressed and easy to slip

Therefore, existing conventional hexagonal nuts 20 usually have shortcomings such as inadequate assembly and low service life of ordinary hexagonal sleeves.

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