CN203847539U

CN203847539U - Electricity conducting washer

Info

Publication number: CN203847539U
Application number: CN201320641960.7U
Authority: CN
Inventors: 张建平
Original assignee: Shanghai Dianba New Energy Technology Co Ltd
Current assignee: Shanghai Dianba New Energy Technology Co Ltd
Priority date: 2013-10-17
Filing date: 2013-10-17
Publication date: 2014-09-24
Anticipated expiration: 2023-10-17

Abstract

The utility model discloses an electricity conducting washer. The conductive washer comprises a circular wash body. Arc-shaped grooves are formed in circumferential faces of inner rings of the body. Annular electricity conducting springs are embedded in the arc-shaped grooves respectively, extend from at least one end face of the body and are higher than the end face. In this way, when the annular washer body is sleeved between a nut and a bolt, one end face of the head of the bolt, the annular washer body and one end face of the nut are successively pressed together. The electricity conducting springs extend from the end faces of the body, so the electricity conducting springs contact with one end of the head of the bolt and one end face of the nut. Each of the springs is coiled, so it is like that there are multiple points contacting with the end faces so that connectivity of the end faces is greatly improved, and contact resistance is greatly reduced.

Description

A kind of conductive gasket

Technical field

The utility model relates to a kind of packing ring.

Background technique

In the past, when bolt is being screwed on nut, generally between nuts and bolt, installs one additional and there is certain thickness ring washer, play anti-skidding effect on the one hand, can play on the other hand the effect of conduction.

But because ring washer is that the metallic material with certain rigidity is made, although so the head of packing ring and bolt and the contact between nut for face contact, owing to being difficult to accomplish absolute plane, therefore real effectively area of contact is still limited.So just increased contact resistance.In addition, anti-skidding aspect is also mainly by the surface friction drag between face.

Summary of the invention

The purpose of this utility model is to provide a kind of can reduce contact resistance greatly, and improves the conductive gasket of surface friction drag.

A kind of conductive gasket of the present utility model comprises:

Ring washer body is formed with arc groove on the interior ring circumferential surface of this body, is embedded with annular power spring in this arc groove, and this power spring stretches out and higher than this end face from least one end face of described body.

Preferably, described power spring is pressed against in described arc groove by the elastic force of self.

Preferably, described power spring is from two end face outputs of described body.

The utility model is by a nested annular power spring on the interior ring circumferential surface of ring washer body, and spring stretches out from the end face of body, like this, when such ring washer is set between nuts and bolt, together with an end face of an end face of the head of bolt, ring washer of the present utility model and nut is just pressed against successively, because power spring stretches out from the end face of body, thus power spring just and end face of the head of bolt and an end face of nut contact.Because spring has a lot of circles, be therefore just equivalent to have a lot of individual points that contact with these end faces, so greatly increased the connectivity of end face, thereby contact resistance is also reduced greatly.In addition, due to when by bolt tightening on nut time, the thickness of packing ring body can also play spacing effect, the compression that not only makes power spring is to be controlled in regime of elastic deformation, has protected power spring; And the frictional force of self and two end faces adds the frictional force of upper spring and these two end faces, make frictional force more much bigger than independent use packing ring body itself, therefore also there is the effect that increases surface friction drag, prevent that bolt from getting loose from nut.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is that schematic diagram is looked on a left side of Fig. 1;

Fig. 3 is that the B-B of Fig. 2 is to generalized section;

Fig. 4 is that the utility model is used view.

Embodiment

As shown in Figures 1 to 3, the utlity model has the ring washer body 1 of predetermined thickness, on the interior ring circumferential surface of body 1, be formed with arc groove 2, be embedded with annular power spring 3 in arc groove 2, power spring 3 stretches out and higher than two end faces from two end faces of body 1.In the utility model embodiment, power spring 3 exceeds 0.15mm from two end faces of body 1.Power spring 3 is pressed against in arc groove 2 by the elastic force of self, and the elasticity by self plays hard-wired effect like this, prevents that power spring 3 from loosing from arc groove 2.

As shown in Figure 4, during use, the utility model is nested on nut 5 and bolt 4.

By a nested annular power spring 3 on the interior ring circumferential surface of ring washer body 1, and spring 3 stretches out from the end face of body 1, like this, when such ring washer being set between nut 5 and bolt 4, together with an end face of an end face of the head of bolt 4, ring washer of the present utility model and nut 5 is just pressed against successively, because power spring 3 stretches out from the end face of body 1, thus power spring 3 just and end face of the head of bolt 4 and an end face of nut 5 contact.

Because spring 3 has a lot of circles, be therefore just equivalent to have a lot of individual points that contact with these end faces, so greatly increased the connectivity of end face, thereby contact resistance is also reduced greatly.

In addition, due to when bolt 4 is tightened on nut 5, the thickness of packing ring body 1 can also play spacing effect, and the compression that not only makes power spring 3 is to be controlled in regime of elastic deformation, has protected power spring; And the frictional force of self and two end faces adds the frictional force of upper spring 3 and these two end faces, make overall friction own more much bigger than independent use packing ring body 1, therefore also there is the effect that increases surface friction drag, prevent that bolt 4 from getting loose from nut 5.

The utility model not only can perform well in the place that needs to use such nuts and bolt contact in electric motor car, also can be applied to the place of similar structure.

Claims

1. a conductive gasket, is characterized in that, comprising:

2. conductive gasket as claimed in claim 1, is characterized in that, described power spring is pressed against in described arc groove by the elastic force of self.

3. conductive gasket as claimed in claim 1 or 2, is characterized in that, described power spring is from two end face outputs of described body.