RU1781747C - Electric contact pair - Google Patents

Abstract

Usage: relates to electrical engineering, in particular to electrical connect 2 l. Summary of the invention: the proposed electrical contact pair contains a socket made of sheet spring material and a flat knife pin. The nest is L-shaped and provided with an L-shaped slot. The slot forms two elastic shoulders on the leg of the socket. Recesses are provided on the leg of the socket for engaging with the pin. With this design of the socket, torsional deformation is used to create a contact pressure, which allows to create a greater tension in the connection and, therefore, increase the service life, as well as reduce the accuracy of the manufacture of pins and sockets, which simplifies their manufacturing technology. 4 ill.

Description

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WITH

The invention relates to electrical engineering, in particular to electrical connectors.

A known electrical contact pair comprising a cylindrical pin with a tapered end and a tubular socket of spring material with four slots and an auxiliary wire spring.

A disadvantage of the known electrical contact pair is the high accuracy and complexity of the manufacturing technology of the socket and pin.

The closest in technical essence to the claimed technical solution is an electrical contact pair comprising a flat knife pin and a socket composed of two spring sleeves, along the edges of which spring tabs are formed due to cutouts.

A disadvantage of the known electrical contact pair is the complexity of the technology

manufacturing a socket requiring the use of special equipment. In addition, in the known electrical contact pair, contact pressing is created by bending deformation, which for small dimensions of the pair within the elastic deformation of the material significantly limits the amount of tension in the contact area of the pin with the socket, which reduces the service life of the electrical pair.

The aim of the invention is to simplify the manufacturing technology of the socket and increase the service life of the electrical contact pair.

This goal is achieved by the fact that the contact pair containing a flat knife pin and a socket made of sheet spring material, the socket is L-shaped and provided with a slot that forms two elastic shoulders on one socket of the socket and recesses are located on the other socket foot ,

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for example, a semicircular shape for engaging with a pin.

Fig. 1 shows an electrical contact pair in an articulated position with a pin and socket; figure 2 is the same, left view; in Fig.Z - the same, a top view; Fig. 4 is a loading diagram of a single elastic shoulder.

The electrical contact pair consists of a socket 1, an L-shaped and a pin 2. The socket 1 is provided with a slot 3, which forms elastic shoulders 5,6 on the leg 4 of the socket 1. On the leg 7 of the socket 1 on the side of the slot 3 there are recesses 8.9, intended to interact with the pin 2. The dimensions of the recesses 8.9 of the socket 1 are smaller than the size of the contact part of the pin 2.

Contact couple works as follows.

When articulating the socket 1 with the pin 2, due to the fact that the dimensions of the contacting part of the pin 2 are larger than the dimensions of the corresponding part of the socket 1, then tension is formed in the contact zone. Since the elastic shoulders 5,6 are located on one leg of the socket 1, and the recesses 8.9 for contact with the pin 2 are placed on the other leg of the socket 1, the cross-section XX experiences a torsional deformation, which creates a contact pressing.

The angular displacement during bending is determined by the formula:

d MML

44 ETF The angle of twist during torsion is determined by the formula:

L MKPL

PGI

where Mi and Mkr are, respectively, the bending and torque U;

L is the length of the elastic shoulder;

3 - moment of inertia of the section;

E is the modulus of longitudinal elasticity;

G is the shear modulus.

Accepting for bronze the values of E 10 kg / cm and G 4-10s kg / cm2 from the formulas, it is obvious that for equal bending and torques Mi MKr, the same cross section and the length of the elastic shoulder, the torsion angle during torsion is greater than the angular displacement during bending and, therefore, the magnitude of the contact pressure is less. This circumstance makes it possible to increase the amount of tension in the contact zone (pin-socket).

The technical and economic efficiency of the proposed electrical contact pair in comparison with the prototype is as follows: in the known technical solution, contact pressing is created by bending deformation and for small sizes of the elastic shoulder, the angular displacement within the elastic deformation of the material is small, which limits the limits of the magnitude of the tension, and this requires a high precision manufacturing

a pin and sockets, which complicates the technology of their manufacture and reduces the service life of the electrical contact pair.

In the claimed technical solution, the contact pressing is created by torsion deformation, which will allow to increase the tension in the contact zone (pin - socket). The increase in tension will reduce the accuracy of manufacturing the nests and pins, which simplifies their technology

Claims (1)

manufacturing, as well as to increase the service life of the electrical contact pair while maintaining all the positive properties of the prototype. SUMMARY OF THE INVENTION a flat knife pin and a socket made of sheet spring material, characterized in that, in order to simplify manufacturing technology and increase the service life, the socket is made L-shaped with a L-shaped slot, which forms two elastic shoulders on one part of the socket, and on at the other end of the hour and from the side of the slot, recesses are provided for engaging with the flat knife pin. I v x 5 Vw s 6 F1PZ Fig 2 Fi2