Same-body different-diameter reverse spiral screw fastening assembly not loose permanently

Abstract

The invention discloses a same-body different-diameter reverse spiral screw fastening assembly not loose permanently, and belongs to the technical field of fasteners. The same threaded rod is dividedinto a plurality of rod sections with the diameters sequentially reduced, and outer threads on every two adjacent rod sections are opposite in turning direction. All the rod sections are provided withmatched nuts. In addition, lock clamps different in structure are arranged to clamp the nuts and prevent every two adjacent nuts from doing opposite reverse rotation. The assembly is suitable for thesituation that fastened pieces are provided with through holes, after a same-body different-diameter reverse spiral bolt assembly is made for fastening, under the action of vibration force, due to areverse turning direction structure, the contradictory loosening and tightening rotation tendency can be generated between every two adjacent nuts, and the two nuts cannot generate same-direction rotation displacement. Meanwhile, the lock clamps lock the relative positions when every two adjacent nuts are fastened, and the two nuts cannot generate opposite reverse rotation displacement. Accordingly, the effects that after fastening, loosening does not happen permanently, and detachment is convenient are achieved.

Description

Technical field [0001] The patent of the present invention relates to the technical field of fasteners, in particular to a non-loosening homogenous reducing screw fastening assembly. Background technique [0002] Screw fastening components are a type of mechanical parts used to fasten two or more components connected as a whole. The threaded rod at the core of the screw is a cylinder with threads on the outside. It is divided into three types: bolts (with end cap screws), studs (end cap screws), and screws (end cap pointed screws) according to different shapes and uses. As a mature industry, the screw fastener industry has been standardized for decades. However, the anti-loosening problem of screw fasteners has not been fundamentally and effectively solved. Solving the problem of anti-loosening in the field of screw fasteners is not only tight The huge problem in the firmware industry is also a huge problem in the entire machinery industry. The solution of the anti-loosening pr...

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Problems solved by technology

[0004] The anti-loosening screws commonly used in the industry now basically belong to the above 4 similar products. The first type of mechanical anti-loosening is actually not anti-loosening but to avoid falling off; the second type of riveting anti-loosening bolt rod can only be used once and repaired It is difficult to disassemble, and cutting tools are necessary to destroy the bolts; the third type of friction and anti-loosening products such as Japanese Hadlock eccentric nuts and Spirax wedge lock nuts only increase the loosening resistance, and will also loosen and fall off when the vibration of the component is large enough; Type 4 structure anti-loosening types such as Down lock nuts and bolt rods are extremely difficult to process. In addition, it should be noted that the vibration force can be transmitted between components, and the vibration force will be transmitted from the component to the first nut on the inside and then transmitted. Give the second nut to the outer end. When the vibration force is strong enough, the transmitted vibration force can make the outer end nut loose first, and then the inner nut loosen, and the two nuts will loosen and fall off in turn.

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