CN-115566457-B - Quick plug structure and plug

CN115566457BCN 115566457 BCN115566457 BCN 115566457BCN-115566457-B

Abstract

The invention relates to a quick plug structure and a plug, the structure comprises a plug and a socket, a pin mounting hole and a pin contact piece are arranged in a plug shell, a socket mounting hole and a socket are arranged in the socket shell, the pin contact piece comprises a front-end pin capable of axially reciprocating relative to the plug shell, an elastic piece is further connected to the tail of the front-end pin, a moving part capable of radially reciprocating along the front-end pin is further arranged on the front-end pin, when a head seat is plugged, the end of the pin mounting hole faces a moving part to stop and limit, the elastic piece is compressed, when the moving part is radially extruded and then enters a release groove on the side wall of the pin mounting hole, and then axially moves to be quickly plugged under the pushing of the elastic piece along with the front-end pin, when the head seat is separated, the front end of the release groove stops and limits the moving part, the elastic piece stretches, a sliding part keeps contact with the socket, the moving part is separated from the release groove after being radially extruded, and the front-end pin is quickly separated from the socket. The invention reduces the burning effect of the electric arc by shortening the plugging time.

Inventors

REN ZILIANG
QIN ZHENMIN
LI MENG
CUI QIYUAN
QIAO ZHENZHEN

Assignees

中航光电(广东)有限公司

Dates

Publication Date: 20260505
Application Date: 20221020

Claims (7)

1. The quick plug structure comprises a plug and a socket, wherein the front ends of the plug and the socket are plugged in opposite directions, at least one pin mounting hole provided with a pin contact is formed in a plug shell, at least one jack mounting hole provided with a jack is formed in a socket shell, and the quick plug structure is characterized in that the front end of the pin mounting hole is provided with a cavity for the jack mounting hole to enter; the contact pin contact piece comprises a front-end contact pin capable of axially and reciprocally moving relative to a plug shell, an elastic piece is further connected to the tail of the front-end contact pin, a moving part capable of radially and reciprocally moving along the front-end contact pin is further arranged on the front-end contact pin, when the plug and the socket are plugged, the jack mounting hole end faces the moving part to stop and limit the moving part to enable the elastic piece to be compressed, when the moving part is radially extruded by the front ends of the plug shell and the jack mounting hole and then enters a release groove on the side wall of the jack mounting hole, the front-end contact pin moves axially along with the front-end contact pin under the pushing of the elastic piece to realize the rapid plugging of the front-end contact pin and the jack, when the plug and the socket are separated, the front-end contact pin keeps contact with the jack, the moving part is separated from the release groove after being radially extruded by the side wall of the plug shell and the release groove, and the front-end contact pin is rapidly separated from the jack under the pulling of the elastic piece; The front end of the jack mounting hole is provided with a first inclined plane which is used for stopping and limiting the moving part so as to enable the elastic part to compress and guide the moving part to enter the release groove; The contact pin mounting hole is internally provided with an avoidance groove for avoiding a moving part, the rear end wall body of the avoidance groove is provided with a first guide surface, the front end wall body is provided with a second guide surface, the first guide surface is an inclined surface for radially extruding the moving part to enter the release groove, the second guide surface is an inclined surface for radially extruding the moving part to be separated from the release groove, the moving part comprises a guide mounting groove and a sliding block slidingly arranged in the guide mounting groove, the spring provides power for the sliding block to be far away from the bottom of the guide mounting groove, and the upper end of the sliding block is rotationally provided with a roller.
2. The quick connect-disconnect structure of claim 1, wherein the front-end pin comprises a pin body and a high-temperature-resistant contact fixed at the front end of the pin body, the high-temperature-resistant contact is in contact conduction with the jack when the moving part is blocked and limited by the front end wall body of the release slot, and the pin body is in contact conduction with the jack when the plug and the socket are plugged in place.
3. The quick connect and disconnect structure of claim 1, wherein the front end of the socket is provided with an elastic structure that makes reliable contact with the front-end pin through contact protrusions therein.
4. The rapid plug structure of claim 2, wherein the front end of the high temperature resistant contact is further fixed with a non-conductive contact for isolating an arc.
5. The quick connect and disconnect structure of claim 1, wherein the pin contact further comprises a connection portion secured within the pin mounting hole and a tail terminal secured to a rear end of the connection portion, the connection portion being in sliding contact with the front pin, the spring being located between the tail terminal and the front pin.
6. The quick connect-disconnect structure of claim 5, wherein the connecting portion is sleeved on the front-end pin, the connecting portion comprises a small-diameter section for sliding contact with the front-end pin, a large-diameter section fixedly matched with the plug housing, and a step surface for connecting the small-diameter section and the large-diameter section, the front-end pin is matched with the step surface through the outer Zhou Tutai of the front-end pin to realize axial forward sliding limit, and the tail end face of the front-end pin is matched with the tail terminal to realize axial backward sliding limit.
7. The quick plugging structure according to claim 1, wherein the roller is rotatably mounted in a slot at the upper end of the slider via a fixed shaft, and partially protrudes out of the slot, and the upper end surface of the slider is an arc surface with two low ends and a high middle.

Description

Quick plug structure and plug Technical Field The invention belongs to the technical field of connectors, and particularly relates to a quick plug structure. Background Connectors are widely used in many industries, and some connectors need to be plugged in and out with electricity when in use. Because the head of the conductive terminal is often subjected to arc discharge during live plugging, the material of the terminal is ablated, and the contact reliability of the connector is affected after long-term use. The prior art often avoids the problems by taking protective measures, and the common mode is to achieve the purposes of elongating the arc and cooling the arc by arranging an arc extinguishing device such as an air flow arc blowing device, a magnetic arc extinguishing device, a vacuum arc extinguishing device and the like, so as to weaken the ablation influence of the arc on the terminal. However, the method of arranging the arc extinguishing device to weaken the burning influence of the arc on the terminal always requires enough space on the connecting device to arrange corresponding structural parts, which is not applicable in some narrow spaces and increases the complexity of the internal layout of the connector. Disclosure of Invention In order to solve the problems, the invention provides a novel quick plug structure, which can reduce the arc burning time through quick plug so as to weaken the burning influence of the arc on the terminal. The aim and the technical problems of the invention are realized by adopting the following technical proposal. According to the invention propose A quick plugging structure comprises a plug and a socket, wherein the plug and the socket are plugged in a front end opposite to each other, at least one pin mounting hole with pin contact pieces are arranged in a plug shell, at least one jack mounting hole with jacks is arranged in the socket shell, a cavity for the jack mounting hole to enter is formed in the front end of the pin mounting hole, the pin contact pieces comprise front-end pins capable of axially reciprocating relative to the plug shell, elastic pieces are further connected to the tail parts of the front-end pins, moving parts capable of radially reciprocating along the front-end pins are further arranged on the front-end pins, when the plug and the socket are plugged in, the jack mounting hole ends face to the moving parts to stop and limit the elastic pieces to be compressed, when the moving parts are radially extruded by the plug shell or/and the jack mounting hole front ends and then enter into release grooves on the jack mounting hole side walls, and axially move along with the front-end pins under the pushing of the elastic pieces to realize quick plugging of the front-end pins and the jacks, when the plug and the socket are separated, the front-end pins stop the moving parts, the elastic pieces are stretched, the front-end pins are kept in a stop position by the moving parts, and when the front-end pins are radially separated from the plug and the jack mounting hole contact pieces and the front-end pins are only extruded by the front-end pins and the release grooves when the front-end pins are radially separated from the jack mounting grooves. The aim and the technical problems of the invention can be further realized by adopting the following technical measures. The quick plug structure comprises a plug hole, a release groove, a first inclined plane, a second inclined plane and a second inclined plane, wherein the front end of the plug hole is provided with the first inclined plane for stopping and limiting a moving part to enable the elastic part to be compressed and guide the moving part to enter the release groove, and the second inclined plane is arranged on the side wall of the front end of the release groove and is used for stopping and limiting the moving part to enable the elastic part to be stretched and guide the moving part to be separated from the release groove. According to the rapid plugging structure, the upper end face of the moving part protrudes out of the outer peripheral face of the jack mounting hole, the avoidance groove for avoiding the moving part is further formed in the contact pin mounting hole, when the compression amount of the elastic part reaches a set value, the first guide face on the rear end wall body of the avoidance groove compresses the moving part downwards to enable the moving part to enter the release groove along the first inclined face at the lower portion of the front end of the jack mounting hole, and when the tension amount of the elastic part reaches the set value, the second guide face on the front end wall body of the avoidance groove compresses the moving part to enable the moving part to be separated from the release groove along the second inclined face at the lower portion of the front end of the release groove. The sliding part is a front-end contact pin, the front-end contact pin comprises