External threaded fastener with pre-formed slot at tail end and capability of realizing riveting assembly and use method thereof

Abstract

The invention relates to an external threaded fastener with a pre-formed slot at the tail end and capability of realizing riveting assembly. The external threaded fastener is arranged as a bolt, a screw or a stud. The external threaded fastener is composed of a twistable head part and a rod part with threads, wherein the bottom of the screw head is vertically connected with the top of the screw rod; a cut-through type slot is formed in the bottom of the tail end of the screw rod along the radial direction; a cutting direction of the slot extends to the top from the bottom at the tail end of the screw rod; at least one slot is formed; an indent nest base is arranged on the central part at the bottom at the tail end of the screw rod; the center of the nest base coincides with the center of the slot. When the external threaded fastener is used, the external threaded fastener is firstly assembled in a connector, and then a nut is screwed in and tightened, a sharp tool is used for resisting against the center of the nest base, and the screw rod on the slot part expands along the radial direction under an effect of hammering, so that the function of limiting the nut to retreat from the space is achieved. During a detaching process, the tool is used for loosening the nut and gradually drawing back the nut. The external threaded fastener has better anti-loosening and anti-falling property, is low in production and use cost, is detachable and reusable and is capable of re-twisting and maintaining the connecting pair.

Description

technical field [0001] The invention relates to the field of mechanical threaded connections, in particular to an externally threaded fastener whose tail end is pre-grooved to realize riveted assembly and its use method, and is particularly suitable for providing a detachable and repeatable fastener with good anti-loosening performance. Useful, retightenable external threaded fasteners and their assembly and connection methods. Background technique [0002] Threaded assembly connection has established a wide range of comprehensive series of standards, and has formed various forms of bolts, screws, nuts, studs and other threaded connection standard parts. Its standardization, convenience, detachable and reusable characteristics make thread Connection technology has been widely used in various mechanical equipment. [0003] According to the "2011 China Automobile Fastener Industry Investment Analysis and Forecast Report", the statistics on the number of fasteners used in auto...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defects and problems of poor anti-loosening performance, non-detachable and reusable riveted connection, and non-re-tightening defects and problems existing in the existing threaded connection technology, and to provide a kind of anti-loosening performance that is good and has a detachable Reusable, re-screwable tail pre-grooved bolts capable of riveting assembly and methods of use thereof

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