CN103573784A

CN103573784A - Novel locknut

Info

Publication number: CN103573784A
Application number: CN201210251020.7A
Authority: CN
Inventors: 盛仁科
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-19
Filing date: 2012-07-19
Publication date: 2014-02-12

Abstract

The invention relates to a locknut adopting a forward and backward meshing method. The locknut comprises a main nut and an auxiliary nut, wherein grain directions of inner threads of the main nut and the auxiliary nut are opposite. When the locknut works, a v-shaped elastic tongue piece of the auxiliary nut and a groove of the main nut are meshed mutually. When external force is applied into the looseness direction of the main nut, the auxiliary nut is bound to generate force in the opposite direction to prevent the main nut from moving towards the looseness direction.

Description

Locknut

Technical field

The present invention relates to a kind ofly along minus thread engagement method lock nut, especially can produce reaction force during a kind of work and reach the lock nut of retaining object.

Background technique

At present the anti-loose method of nut generally adopts friction, machinery and forever locking, machinery and friction be locking be called detachably locking, and forever locking be called non-dismountable locking.

Common permanent lockingly have: spot welding, riveted joint, bonding etc., this locking method mostly will be destroyed threaded fastener when dismounting, cannot reuse.

The locking method of common friction has: utilize pad, self-locking nut and double nut etc.

The locking method of common machinery has: utilize cotter pin, locked spacer and string wire rope etc.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of anti-loosing effect that can reach permanent lock nut, and can reach again plain nut and install, the using effect of convenient disassembly, and do not need the cheap general lock nut of compression spring.

For solving the problems of the technologies described above, technological scheme of the present invention is: the major and minor nut inner thread ridge orientation of this nut is contrary, the V-shaped elastic tongue piece of the groove of mother nut and secondary nut is corresponding, and the annular projection portion vertical height of secondary nut is lower than V-shaped elastic tongue piece.Adopt after said structure, because major and minor nut ridge orientation is contrary, elastic tongue piece and groove can firmly mesh, Given this, during this nut work, intermeshing one-tenth is as a whole, when outer active force acts on mother nut, make in direction that its pine moves back, because major and minor nut has been an integral body, at this moment secondary nut certainly will produce reaction force and stops mother nut pine to move back and reach anti-loosing effect.The technical requirements of secondary nut is engagement mother nut, and quality can require very light, so cost is cheap.

Accompanying drawing explanation

Fig. 1 is the end view of lock nut mother nut of the present invention.

Fig. 2 is the end view of Anti-crowed nut clamp nut of the present invention.

Fig. 3 is the anti-nut engagement position enlarged diagram that send of the present invention.

Below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail

Fig. 1 and Fig. 2 show internal thread 3 and internal thread 7, when mother nut 1 and secondary nut 4 are arranged on while being with on externally threaded bolt, for example, while being arranged on the outside thread of electric bicycle wheel bearing (not shown), main, secondary nut is screwed into bolt in the opposite direction, at this moment annular projection portion 6 will stop secondary nut 4 further to compress and destroy V-shaped elastic tongue piece 5, arrive fastening while requiring position, V-shaped elastic tongue piece 5 and groove 2 are intermeshing, now when outer active force acts on (not shown) while making direction that mother nut pine moves back, because the engagement of major-minor nut is an integral body, at this moment secondary nut certainly will produce active force in the other direction and acts on mother nut, stop mother nut to move back direction towards pine and do further motion.

As shown in Figure 3, V-shaped elastic tongue piece and groove 2 have certain gradient, are convenient to reuse like this when installation and removal.

The above is to be only only optimal way of the present invention; should be understood that; for those of ordinary skill in the art; under the premise without departing from the principles of the invention; can also there is other malformation, for example: the V-shaped elastic tongue piece on secondary nut can also be round or other shape of semi-hollow, and bullet is on mother nut; as long as adopted the lock nut of suitable minus thread engagement method, all dropped on protection scope of the present invention.

Claims

1. employing, along a minus thread engagement method lock nut, comprises the groove 2 on mother nut 1 end face, V-shaped elastic tongue piece 5 annular convex 6 and internal thread 7 on internal thread 3 and secondary nut 4 end faces.

2. according to lock nut claimed in claim 1, it is characterized in that: described internal thread 3 is contrary with internal thread 7 ridge orientations.

3. according to claim

Type elastic tongue piece 5 described in 1 and ring stake lug boss 6, is characterized in that: the perpendicular distance of described V-shaped elastic tongue piece 5 is higher than the perpendicular distance of annular projection portion 6.Described V-shaped elastic tongue piece 5 energy and groove 2 firmly mesh.