RU227745U1 - Socket contact of an electrical connector - Google Patents

Abstract

The utility model relates to the field of manufacturing electrical connectors and can be used to create electrical connectors used in harsh operating conditions without losing electrical contact. The technical result is to simplify the connection of a plug and a socket while simultaneously ensuring high reliability of the electrical contact. A socket contact of an electrical connector, comprising a tubular housing provided with an end opening for inserting a pin contact and made with a cutout in a section of the annular sample surrounded by a C-shaped spring element, which contains a flat contact pad with bent side edges and an arcuate section for embracing the tubular housing, wherein the flat contact pad is divided into two parts by means of a transversely located groove. 1 c.p. cl., 3 pl.

Description

The utility model relates to the field of manufacturing electrical connectors and can be used to create electrical connectors used in harsh operating conditions without loss of electrical contact.

A multi-core cable connector is known according to US Patent No. 3,676,837, published July 11, 1972, in which the socket contact has a crimping tube portion, a shoulder portion, and a mating portion. The crimping tube portion has an internal channel into which wire cores can be inserted with subsequent crimping. The shoulder portion serves to facilitate retention of the male contact inside the female contact holder. The mating portion has a recess into which the male contact can enter. On the outer surface of the mating portion, in a section of reduced diameter, an annular cutout is made. A spring element, including a flat portion and concave portions extending from it, snaps onto the section of reduced diameter of the mating portion in such a way that its flat portion overlaps the cutout on the mating portion and presses the male contact.

The disadvantage of the known solution is the complexity of assembling the socket contact due to the shape of the spring element.

The closest solution to the claimed one is an electrical connector unit comprising a socket contact including a tubular socket housing configured to accommodate a mating part of the male contact and a clamp. The socket housing is provided with a flange that surrounds an axial opening at the front end of the socket for inserting the male contact. On the side surface of the tubular socket housing next to the flange there is a radial cutout that extends in the longitudinal direction to the terminal of the female contact. The clamp is made separately from the socket contact and is mounted on the socket housing. The clamp has an elongated housing with a C-shaped cross-section adapted for a snap connection with the socket housing of the socket. The clamp has a contact lever defining the first radial edge of the clamp and a curved portion of the fastening that forms the second radial edge of the clamp. The radial gap continues along the entire length of the clamp between the first and second radial edges. The socket body of the sleeve passes through a radial clearance when the clamp latches onto the socket body (US Patent No. 7,115,002, published October 3, 2006).

The disadvantage of the known solution is the complexity of assembling the socket contact due to the large size of the contact area of the spring element.

The technical task of the utility model is to create a highly reliable contact that ensures a reduction in the articulation force and facilitates installation during assembly.

The technical result provided by the utility model consists in simplifying the connection of the plug and socket while simultaneously ensuring high reliability of the electrical contact.

The technical result is achieved in that the socket contact of the electrical connector, containing a tubular housing, provided with an end opening for inserting a pin contact and made with a cutout in the section of the annular sample, surrounded by a C-shaped spring element, which contains a flat contact pad with bent side edges and an arcuate section for embracing the tubular housing, wherein the flat contact pad is divided into two parts by means of a transversely located groove.

The utility model is illustrated by the following figures:

Fig. 1 shows the working part of the contact body;

Fig. 2 shows a spring element;

Fig. 3 shows a socket contact assembled with a spring element and a male pin contact.

The socket contact of the electrical connector includes a cylindrical housing 1 with a blind axial hole for accommodating a male pin contact 2 and a spring element 3 (Fig. 3). The cylindrical housing at the front open end is made with a flange 4 and near said flange 4 contains an annular recess 5 formed by reducing the diameter of the housing 1 (Fig. 1). To facilitate mating with the pin contact, a lead-in chamfer is made on the inner surface of the front open end of the housing 1. The housing of the contact 1 is fixed in the insulator of the socket (not shown). In the section of said annular recess 5, the housing 1 of the socket contact contains a cutout 6 of a rectangular cross-section formed by removing a segment of the housing. The cutout 6 extends in the longitudinal direction along the entire section of the annular recess. On the flange 4, on the side where the opening 6 is made, a bevel 7 is made to simplify the installation and removal of the spring element 3. The bevel 7 orients the spring element 3 and, thus, facilitates its correct installation on the housing 1, subsequently ensuring a reliable electrical connection with the male pin contact.

The housing of the socket contact is made from a solid cylindrical blank by removing material from the outer surface and drilling a blind axial hole.

The spring element 3 is formed as a separate part connected to the housing 1 by gripping and snapping onto the section of the recess 5 (Fig. 2). The spring element 3 is a thin plate, curved in cross-section in the shape of the letter C, including a contact pad 8 of a generally flat shape, passing on one side into an arcuate section 9. On the other side, a gap 10 is made between section 9 and pad 8. The length of the spring element is made slightly shorter than the length of section 5 of the recess for the purpose of free installation of the spring element on the housing 1. During assembly, the housing 1 passes through the gap 10 and the spring element snaps onto it.

The contact pad 8 of the spring element 3 has a generally flat shape and forms a contact surface with the male pin contact 2 on the inside. The contact pad is divided into two parts by means of a transverse groove 11 made in it. This ensures a reduction in the force of joining the socket and pin contact by dividing the force element into two parts. This also ensures an improvement in the contact of the spring element with the male pin contact 2 and, thus, increases the reliability of the electrical contact. In addition, by changing the dimensions (width and depth) of the groove 11, it is possible to regulate the magnitude of the force of separating the contact.

The contact pad contains upwardly bent side edges 12, which facilitate the movement of the front part of the male pin contact along the spring element 3 at the moment of the start of mating, which facilitates the process of mating the contacts.

The spring element is made of beryllium bronze and plated with gold.

Fig. 3 shows the interaction of the socket and pin contacts. The pin contact 2 is inserted into the housing 1 from the front side. In the section where the cutout 6 is made, the pin contact is tightly pressed to the housing of the socket contact by means of the spring element 3. Two parts of the contact pad 8 press the pin contact to the housing of the socket contact, creating a downward biasing force, holding the pin and socket contacts so that an electrical connection is created, and preventing their spontaneous disengagement. The arcuate section 9 of the spring element 3 ensures the grip of the cylindrical housing, preventing its disconnection. The large contact area prevents the disruption of the electrical contact under vibration loads, minimizes the effect of corrosion on the electrical characteristics over time, and increases the stability of the electrical characteristics.

Claims (2)

1. A socket contact of an electrical connector, comprising a housing with an end opening for inserting a pin contact and made with a cutout in a section of the annular sample, surrounded by a C-shaped spring element, which comprises a flat contact pad with bent side edges and an arcuate section for embracing a tubular housing, characterized in that the flat contact pad is divided into two parts by means of a transversely located groove. 2. A socket contact according to item 1, characterized in that the housing at the front end contains an annular flange made with a bevel on the inside in the area where the cutout is made.