RU2729779C1 - Power electrical connector - Google Patents

Abstract

FIELD: electrotechnical industry.SUBSTANCE: invention relates to electrical industry and can be used in devices for detachable connection of power circuits, in particular for installation of accumulator battery in aircraft compartment. Connector comprises two housings, a male contact and a cylindrical female contact having a spring-loaded device mounted on its outer surface, cylindrical socket contact is made in form of collet with cut and crimped part equipped with bore, diameter of which is equal to diameter of pin contact, and spring-loaded device is made in form of spring ring, located at the beginning of socket contact. Socket contact can have an additional bore that thins its wall, at that, the diameter of the additional bore is considerably larger than the diameter of the pin contact.EFFECT: increased reliability of electric connector operation due to increase of contact surface at connection of pin and socket contacts, as well as increased contact pressure force.1 cl, 2 dwg

Description

The invention relates to the electrical industry and can be used in devices for detachable connection of power electrical circuits, in particular, for installing a storage battery in an aircraft compartment.

A sealed electrical connector is known (patent of the Russian Federation No. 2484566, IPC H01R 13/52, publ. 2013), containing a cable lug, a socket, a union nut and two bushings with tapered surfaces for fixing the armor of a geophysical cable, while the cable lug is made of a composite connected by means of a thread of the upper and lower bodies, and the union nut and two bushings with tapered surfaces are attached to the upper part of the upper body, in which a bore is made for installing a thrust washer and sealing elements, a chamfer is made on the outer conical sleeve, and the thrust washer is made of metal with less hardness than the wire of the cable armor, in the lower case there is a pin contact in the insulator, on which a bushing is put on, which protects against breakdown and serves as a stop that perceives the force of docking with the plug, made removable, in the form of a case into which the socket contact is pressed on one side , and on the other hand, the shank forming the germv od, the coupling of the sleeve, the insulator and the sealed lead-in is made stepwise, the socket with a cable lug is mechanically connected using a union nut.

The features common to the proposed power electrical connector and analog are as follows:

- body;

- pin contact;

- cylindrical female contact.

The disadvantage of the known design is the limitation of the contact area when the pin and socket contacts are articulated and the limitation of the contact pressure force, which reduces the reliability of the connector by increasing the transient electrical resistance of the contacts.

The closest to the proposed power electrical connector, taken as a prototype, is an electrical connector (patent of the Russian Federation No. 2260886, IPC H01R 13/18, publ. 2005), containing a plug with pins and a socket with sockets, and the tip of each pin is made in the form parts of the spherical surface, a chamfer is made at the inlet of each socket, the mechanical connection of each pin with the socket is made due to a spring-loaded device, which is made in the form of a spring installed in a recess on the outer cylindrical surface of the socket, on which the sleeve is located, the recess in the socket is made with two walls and a bottom having a through slot, each wall is made with a plane forming it, perpendicular to the longitudinal axis of the nest, the distance between the walls is made greater than half the length of the part of the nest intended for connection with the pin, the bottom of the recess from each wall to the through slot is made to form a cylindrical part pove the depth of the cylinder, the longitudinal axis of which is located perpendicular to the longitudinal axis of the nest behind the outer cylindrical nest on one side with a recess relative to the longitudinal axis of the nest, the height of the recess is made close to the thickness of the spring, the spring is made in the form of a curved plate, the longitudinal size of which is greater than the longitudinal size of the through slot in the bottom recesses, the spring is installed at the bottom of the recess with its longitudinal axis along the longitudinal axis of the socket. The spring is made with the direction of its longitudinal axis along the rolling axis of the spring sheet blank, the profile of the spring is made corresponding to the profile of the cylindrical surface of the recess, the chamfer on the socket is made as part of the spherical surface, the radius of which is greater than the radius of the spherical surface of the tip of the pin; sockets and pins are plated with gold or its alloys, springs are plated with gold-antimony alloy.

The features common between the proposed power electrical connector and the prototype are as follows:

- two buildings;

- pin contact;

- a cylindrical socket contact having a spring-loaded device installed on its outer surface.

The disadvantage of this electrical connector is the insufficient (one-sided) contact surface when the male and female contacts are articulated, which reduces the reliability of the connector by increasing the transient electrical resistance of the contacts.

The technical result achieved in the proposed power electrical connector is to increase: 1) the reliability of the electrical connector by increasing the contact surface when the male and female contacts are articulated; 2) the efforts of the contact pressure.

The above technical result is achieved by the fact that in a power electrical connector containing two bodies, a pin contact and a cylindrical socket contact having a spring-loaded device installed on its outer surface, the cylindrical socket contact is made in the form of a collet with a cut and crimped part provided with a bore, the diameter which is equal to the diameter of the pin contact, in addition, the spring-loaded device is made in the form of a spring ring located at the beginning of the contact. The power electrical connector can also be made in such a way that its cylindrical female contact has an additional bore, thinning its wall, while the diameter of the additional bore is greater than the diameter of the pin contact.

Distinctive features that determine the compliance of the proposed power electrical connector with the criterion of "novelty" are as follows:

- the cylindrical socket contact is made in the form of a collet with a cut and crimped part provided with a bore, the diameter of which is equal to the diameter of the pin contact;

- the spring-loaded device is made in the form of a spring ring located at the beginning of the contact;

- a cylindrical socket contact can have an additional bore, thinning its wall, while the diameter of the additional bore is greater than the diameter of the pin contact.

To substantiate the compliance of the proposed design of the power electrical connector with the “inventive step” criterion, an analysis of the known solutions was carried out according to the literature and the register of inventions. No distinctive features of the proposed solution, which together with the known features, give the above technical result in the literature and the register of inventions, therefore, according to the authors, the proposed design of the power electrical connector meets the criterion of "inventive step".

The design of the proposed power electrical connector in FIG. 1 and FIG. 2.

The proposed power electrical connector consists of a housing 1, a pin contact 2, a housing 3, a socket contact (collet) 4 with a cut (see A-A) and crimped part 5 (see B-B), which is equipped with a bore (bore is performed after compression), the diameter of which is equal to the diameter of the pin contact, as well as a spring-loaded device made in the form of a spring ring 6 and located at the beginning of the socket contact 4 in order to increase the contact pressure force, which helps to reduce the transient electrical resistance of the connection.

Collet 4 can be equipped with an additional bore 7, the diameter of which is much larger than the diameter of the pin contact, which thinns the wall of the collet 4.

An example of a specific implementation of the proposed power electrical connector.

The housing 1 and the housing 3 contain a pin contact 2 and a socket contact (collet) 4 - the main parts of the power electrical connector used for switching products. After pin 2 and socket contact (collet) 4 are articulated, the spring ring 6 contributes to a more complete fit of the cut and crimped part 5 of the collet, increasing the contact surface when pin 2 and socket 4 contacts are articulated, which, in turn, leads to a decrease in the transient electrical resistance connections and increases the reliability of the power electrical connector during operation.

In the case of the presence of an additional bore 7, thinning the wall of the socket contact (collet 4), the elasticity of the parts of the cut collet increases, which increases the reliability of the connector when the contact axes do not match.

Claims (2)

1. Power electrical connector containing two bodies, a pin contact and a cylindrical socket contact having a spring-loaded device installed on its outer surface, characterized in that the cylindrical socket contact is made in the form of a collet with a cut and crimped part provided with a bore, the diameter of which is the diameter of the pin contact, and the spring-loaded device is made in the form of a spring ring located at the beginning of the socket contact. 2. Power electrical connector according to claim. 1, characterized in that the cylindrical female contact has an additional bore, thinning its wall, while the diameter of the additional bore is greater than the diameter of the pin contact.

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