CN205298228U - Lock washer - Google Patents

Abstract

The utility model discloses a lock washer, include: circle body, through -hole and shell fragment, the through -hole is seted up in the center of circle body, and the axle center of the axle center of through -hole and circle body is located same straight line, two recesses have been seted up to the inboard symmetry of circle body the groove is provided with the shell fragment, the shape of shell fragment with the shape phase -match of recess, the shell fragment with circle body formula structure as an organic whole, the shell fragment has the angle of the perk of going up earlier on. In this way, the utility model discloses the locking ability and the processing that can improve the packing ring are simple, and the cost is lower.

Description

A kind of lock washer

Technical field

This utility model relates to connector field, particularly relates to a kind of lock washer.

Background technology

Traditional spring washer is widely used in the load and non-bearing structure of common mechanical product, is characterized in low cost, easy for installation, it is adaptable to mounting or dismounting are position frequently. But the anti-loose ability of spring washer is very low, especially requires, in current European and American countries, the load-carrying construction connecting portion that in high reliability product, employing rate is extremely low, particularly important, be abandoned already for many years. Our country also has certain applications in military project, but has been improved to stainless steel material. And steel spring washer there is also unsafe factor: 1, be " piston ring "; 2, it is hydrogen embrittlement; 3, it is to support the use with plain washer, wastes material. The main cause causing above-mentioned factor is: 1, the problem of material itself; 2, heat treatment hardness is too high, and quenching degree is bad; 3, testing electroplated hydrogen embrittlement. And spring washer can not be used alone, it is necessary to plain washer supports the use. Often fill less when workman installs, neglected loading, forget dress. Anti-loosing effect is lowered significantly. Authorization Notice No. is: the Chinese patent of CN2752519Y discloses a kind of composite locking washer, and including annular body, described annular body inner ring has at least three joint-cutting, and the body of joint-cutting side tilts angled with opposite side body; Described annular body outer ring is the circular arc of an inside throwing; Described annular body outer ring is circumferentially provided with projection. After nut and composite locking washer are wrenched, the applanation of nut makes composite locking washer circular arc flatten, and allows projection be attached to the surface of securing member tightly and to imbed. Because of composite locking washer circular arc stress deformation, have together with nut tightly fits into by a kind of power with securing member all the time; It addition, the structure being upturned, increase the intensity of pressure. But, the anti-loosening gasket structure of this kind of structure is relatively complicated, mould relatively costly, it is not easy to processing, qualification rate is relatively low.

Utility model content

This utility model is mainly solving the technical problems that provide a kind of lock washer, it is possible to increase anti-loose ability and the processing of packing ring are simple, less costly.

For solving above-mentioned technical problem, the technical scheme that this utility model adopts is: provide a kind of lock washer, including: circle body, through hole and shell fragment, described through hole is opened in the center of circle body, and the axle center of the axle center of through hole and circle body is positioned at same straight line, the inner side symmetry of described circle body offers two grooves, described groove is provided with shell fragment, the mating shapes of the shape of described shell fragment and described groove, described shell fragment and described circle body are integral type structure, and described shell fragment has an angle being upturned.

Preferably, width d is circle body width D the 1/3 ~ 1/2 of described shell fragment.

Preferably, the angular range between described shell fragment end face and circle body end face is 5 �� ~ 40 ��.

Preferably, the angle between described shell fragment end face and circle body end face is 15 ��, and now, the pretightning force of shell fragment is maximum, and anti-loosing effect is best.

Preferably, described shell fragment adopts rigid material to make.

The beneficial effects of the utility model are: this utility model 1, solve the shortcoming that plain washer can not be locking; 2, spring washer and plain washer are combined together, improve the anti-loose ability of lock washer; 3, simple in construction, it is easy to processing, it is simple to produce in enormous quantities; 4, with low cost.

Accompanying drawing explanation

Fig. 1 is the perspective view of this utility model a kind of lock washer one preferred embodiment;

In accompanying drawing, the labelling of each parts is as follows: 1, circle body, and 2, through hole, 3, shell fragment, 4, groove.

Detailed description of the invention

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus protection domain of the present utility model being made apparent clear and definite defining.

Referring to Fig. 1, this utility model embodiment includes:

A kind of lock washer, including: circle body 1, through hole 2 and shell fragment 3, described through hole 2 is opened in the center of circle body 1, and the axle center of the axle center of through hole 2 and circle body 1 is positioned at same straight line, the inner side symmetry of described circle body 1 offers two grooves 4, described groove 4 place is provided with shell fragment 3, the mating shapes of the shape of described shell fragment 3 and described groove 4, described shell fragment 3 is integral type structure with described circle body 1, described shell fragment 3 has an angle being upturned, the width d of described shell fragment 3 is the 1/3 of circle body 1 width D, angle between described shell fragment 3 end face and circle body 1 end face is 15 ��.

Circle body 1 set in use, can first be installed on bolt, be loaded on and fastening nut by lock washer of the present utility model, and when being tightened to last, nut compresses two shell fragments 3 so that it is be affixed with two sides of nut respectively. When bolts and nuts tend to producing relative motion due to extraneous effect of vibration, the rigidity of the bent shell fragment 3 of lock washer may be prevented from bolts and nuts and produces relative motion. Its objective is that the anti-loosening property providing a kind of saving steel is reliable, it is easy to processing, cost is low, lock washer easy to use.

The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in scope of patent protection of the present utility model.

Claims (5)

1. a lock washer, it is characterized in that, including: circle body, through hole and shell fragment, described through hole is opened in the center of circle body, and the axle center of the axle center of through hole and circle body is positioned at same straight line, and the inner side symmetry of described circle body offers two grooves, described groove is provided with shell fragment, the mating shapes of the shape of described shell fragment and described groove, described shell fragment and described circle body are integral type structure, and described shell fragment has an angle being upturned.

2. a kind of lock washer according to claim 1, it is characterised in that width d is circle body width D the 1/3 ~ 1/2 of described shell fragment.

3. a kind of lock washer according to claim 1, it is characterised in that the angular range between described shell fragment end face and circle body end face is 5 �� ~ 40 ��.

4. a kind of lock washer according to claim 3, it is characterised in that the angle between described shell fragment end face and circle body end face is 15 ��.

5. a kind of lock washer according to claim 1, it is characterised in that described shell fragment adopts rigid material to make.