CN103982521A

CN103982521A - Conducting gasket

Info

Publication number: CN103982521A
Application number: CN201310487946.0A
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: 2014-08-13

Abstract

The invention discloses a conducting gasket, which comprises an annular gasket body with a determined thickness, wherein an arc-shaped groove is formed in the inner-ring circumferential surface of the body; an annular conducting spring is embedded into the arc-shaped groove; the conducting spring extends out of at least one end face of the body, and is higher than the end face. The annular conducting spring is embedded into the inner-ring circumferential surface of the annular gasket body, and extends out of the end face of the body, one end face of the head part of a bolt, the annular gasket and one end face of the nut are pressed together in sequence when the annular gasket sleeves between the nut and the bolt, and the conducting spring extends out of the end face of the body, so that the conducting spring is in contact with one end face of the head part of the bolt and one end face of the nut. The spring consists of a plurality of circle, namely, a plurality of points in contact with the end faces are formed, so that the connectivity of the end faces is increased greatly, and the contact resistance is lowered greatly.

Description

A kind of conductive gasket

Technical field

The present invention relates to a kind of packing ring.

Background technique

In the past, in the time that 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 therefore the contact between packing ring and head and the nut of bolt is for face contact, owing to being difficult to accomplish absolute plane, therefore real effectively area of contact is still limited.So just increase contact resistance.In addition, anti-skidding aspect is also mainly by the surface friction drag between face.

Summary of the invention

The object of the present invention is to provide one can greatly reduce contact resistance, and improve the conductive gasket of surface friction drag.

A kind of conductive gasket of the present invention comprises:

Have the ring washer body of predetermined thickness, on the interior ring circumferential surface of this body, be formed with arc groove, be embedded with annular power spring in this arc groove, 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 present invention 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, in the time that 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 invention and nut is just pressed against successively, because power spring stretches out from the end face of body, therefore 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 increase 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.

Brief description of the drawings

Fig. 1 is structural representation of the present invention;

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 present invention uses view.

Embodiment

As shown in Figures 1 to 3, the present invention 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 embodiments of the present invention, 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, plays hard-wired effect like this by the elasticity of self, prevents that power spring 3 from loosing from arc groove 2.

As shown in Figure 4, when use, the present invention 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, in the time 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 invention and nut 5 is just pressed against successively, because power spring 3 stretches out from the end face of body 1, therefore 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 increase the connectivity of end face, thereby contact resistance is also reduced greatly.

In addition, due in the time that 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 present invention not only can perform well in electric motor car, needing to use the place of such nuts and bolt contact, 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.