CN201608058U - Novel internal and external self-conduction structure - Google Patents

Abstract

The utility model discloses a novel internal and external self-conduction structure, which comprises an external self-elastic contact, an internal self-elastic contact and a moving contact, wherein the internal self-elastic contact and the external self-elastic contact are fixedly connected and are arranged on the inner space of the external self-elastic contact, and the longitudinal sections thereof are in a concentric internal and external circle shape; and the pipe wall of the cylindrical moving contact is clamped between the outer wall of the internal self-elastic contact and the inner wall of the external self-elastic contact. The novel internal and external self-conduction structure has the characteristics of simple structure, small size, flexible operation, high reliability, easy manufacture, low cost and the like, enhances the reliability of conduction and also solves the flux capacity of heavy current.

Description

Novel inside and outside self-reliance conductive structure

Technical field

The utility model relates to outer conducting structure in the high voltage switchgear self-reliance, specifically a kind of novel big electric current self-reliance fingertip conductive structure of 35KVGIS that is used for.

Background technology

For important conductive structure form-self-reliance contact in the High-Voltage Electrical Appliances, the elastic deformation force who is meant the back fingertip distortion postpartum of closing a floodgate provides the contact of contact pressure, and this contact does not need holddown spring.His characteristics are: simple in structure, and reliable operation, the profile radius of curvature is big, helps to relax the electric field in contact gap.

But in design, exist along with electric current increases, need to increase diameter on the contact through-current capability, with contact thickness, cause the structure of contact terminal lengthening, be unfavorable for integrally-built miniaturization, require contact material simultaneously when strain, its bending stress is less than permissible bending stress, and the cost of selecting for use of material is increased greatly.

Summary of the invention

For solving the problem of above existence, the utility model provides a kind of novel inside and outside self-reliance conductive structure that satisfies the through-flow requirement of big electric current, and its technical scheme of taking is:

This conductive structure comprises outer self-reliance fingertip, interior self-reliance fingertip and moving contact, interior self-reliance fingertip is fixedlyed connected with outer self-reliance fingertip and is located at the inner space of outer self-reliance fingertip, their longitudinal section is concentric inside and outside circle shape, the tube wall clamping connection of cylindric moving contact the outer wall of interior self-reliance fingertip and outside between the inwall of self-reliance fingertip.

The utility model is not increasing the monolithic conductive structure by self-reliance fingertip in increasing, and does not improve under the material bending stress ability prerequisite, the bilateral conduction, inside and outside strain produces contact pressure, utilizes the self-reliance structure of contact terminal simple, the uniform characteristics of electric field, solve big electric current through-current capability, dwindle overall structure simultaneously, reduce the cost, make original structure obtain keeping, versatility is good, does not increase overall volume.

Therefore the utlity model has simple in structurely, volume is little, uses flexibly, and good reliability is easy to characteristics such as processing, cost is low.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

As shown in the figure, outer self-reliance fingertip 1, interior self-reliance fingertip 2 and moving contact 3 are cylindric, and wherein interior self-reliance fingertip 2 is positioned at the inner space of outer self-reliance fingertip 1, and their front ends are fixed together, and the longitudinal section of their rear sections is concentric inside and outside circle shape.When energising, the front end of moving contact 3 inserts between outer self-reliance fingertip 1 rear end and interior self-reliance fingertip 2 rear ends in the formed space, and the inwall of the inwall of outer self-reliance fingertip 1 and interior self-reliance fingertip 2 grips the tube wall of moving contact 3, increase the reliability of conduction, solved big electric current through-current capability simultaneously.

Claims (1)

1. novel inside and outside self-reliance conductive structure, comprise outer self-reliance fingertip (1), interior self-reliance fingertip (2) and moving contact (3), it is characterized in that: interior self-reliance fingertip (2) is fixedlyed connected with outer self-reliance fingertip (1) and is located at the inner space of outer self-reliance fingertip (1), their longitudinal section is concentric inside and outside circle shape, the tube wall clamping connection of cylindric moving contact (3) the outer wall of interior self-reliance fingertip (2) and outside between the inwall of self-reliance fingertip (1).