CN106953185B

CN106953185B - Electrical connector

Info

Publication number: CN106953185B
Application number: CN201710241980.8A
Authority: CN
Inventors: 陈霆; 赵欢; 朱健鸿
Original assignee: Guangdong Linyi New Energy Technology Co ltd
Current assignee: Guangdong Linyi New Energy Technology Co ltd
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2023-03-24
Anticipated expiration: 2037-04-13
Also published as: CN106953185A

Abstract

The invention discloses an electric connector, which comprises a socket shell and a plug shell hermetically covered with the socket shell; the socket shell comprises a socket shell bottom wall and a socket shell side wall extending from the outer edge of the socket shell bottom wall to the plug shell, the socket shell bottom wall and the socket shell side wall enclose a socket shell accommodating cavity, and a socket terminal is arranged in the socket shell accommodating cavity; the plug shell comprises a plug shell top wall and a plug shell side wall extending from the outer edge of the plug shell top wall to the socket shell, the plug shell top wall and the plug shell side wall enclose a plug shell accommodating cavity, and a plug terminal is arranged in the plug shell accommodating cavity; the socket terminal is fixedly connected with the plug terminal; the side wall of the plug shell is connected with a cylinder communicated with the accommodating cavity of the plug shell, and a shielding ring, a shielding elastic ring and a cable sealing ring are arranged in the cylinder. The electric connector of the invention is convenient for the installation operation of the cable, and effectively improves the assembly efficiency.

Description

Electrical connector with improved contact arrangement

Technical Field

The invention relates to the field of electric connectors, in particular to an electric connector.

Background

With the rapid development of the electronic industry, electrical connectors have been widely used as a connecting device for transmitting electric current, digital signals, audio signals, image signals, and the like. Conventional electrical connectors are roughly classified into male and female connectors in terms of connection form. However, with the advance of industry, more kinds of electrical connectors have been produced to meet the requirements of different products, different functions and different transmission performances.

The existing heavy current connection is divided into two types, one type is quick-plugging type connection, a plug and a socket are provided, a terminal is respectively arranged in the plug and the socket, the plug terminal and the socket terminal are in elastic contact, the plug terminal and the socket terminal are reliably contacted, meanwhile, the waterproof and shielding functions are met, and the structural design of the plug shell, the socket shell, the plug terminal and the socket terminal is complex.

The other type is a lock screw type connection, a fixed copper bar is arranged, a wire lug terminal is externally connected to the cable connection, the wire lug terminal is locked with the copper bar through screws, the connection needs to be installed on site, when the product also has the functions of water resistance, shielding and the like, the functions of water resistance and shielding nets need to be processed on site, the installation is very complex, and the flow operation cannot be realized.

The existing electric connector comprises a socket and a plug, wherein the plug and the socket are respectively provided with a plug terminal and a socket terminal, and when the electric connector is used, the plug terminal and the socket terminal need to be contacted to enable the plug terminal and the socket terminal to be electrically conducted.

However, when the electrical connector is used to ensure that the plug is reliably contacted with the terminal inside the socket and simultaneously meets the requirements of water resistance, shielding and the like, due to the unreasonable structural design of the electrical connector, the installation and operation of the cable are inconvenient, and the assembly efficiency is affected.

Disclosure of Invention

The invention mainly aims to provide an electric connector, which aims to be simple and reliable in connection and convenient for installation operation of cables so as to improve the assembly efficiency.

In order to achieve the purpose, the electric connector provided by the invention comprises a socket shell and a plug shell hermetically covered with the socket shell; the socket shell comprises a socket shell bottom wall and a socket shell side wall extending from the outer edge of the socket shell bottom wall to the plug shell, the socket shell bottom wall and the socket shell side wall are enclosed to form a socket shell accommodating cavity, and a socket copper bar terminal is arranged in the socket shell accommodating cavity; the plug shell comprises a plug shell top wall and a plug shell side wall extending from the outer edge of the plug shell top wall to the socket shell, the plug shell top wall and the plug shell side wall are encircled to form a plug shell accommodating cavity, and a plug wire ear terminal is arranged in the plug shell accommodating cavity; the socket copper bar terminal is fixedly connected with the plug wire lug terminal through a screw connector;

the side wall of the plug shell is also connected with a cylinder communicated with the plug shell accommodating cavity, and the cylinder is of a hollow structure with two penetrating ends; a first limiting groove is formed in the inner wall surface of the cylinder, a shielding ring and a shielding elastic ring are mounted in the first limiting groove, the shielding elastic ring is sleeved outside the shielding ring, a second limiting groove is further formed in the inner wall surface of the cylinder, a cable sealing ring is mounted in the second limiting groove, and the second limiting groove is located on one side, away from the plug shell, of the first limiting groove;

the side wall of the plug shell is provided with a circular arc-shaped first groove, the first groove and the cylinder are oppositely arranged, the side wall of the socket shell is provided with a circular arc-shaped first bulge, and the first bulge is jointed with the first groove.

Preferably, the receptacle housing is a rectangular receptacle housing, the receptacle housing includes a rectangular receptacle housing bottom wall and 4 receptacle housing side walls extending from an outer edge of the receptacle housing bottom wall to the plug housing, the 4 receptacle housing side walls include two long-side receptacle housing side walls and two short-side receptacle housing side walls, the two long-side receptacle housing side walls are disposed opposite to each other, the two short-side receptacle housing side walls include one short-side receptacle housing side wall having the first protrusion, and the other short-side receptacle housing side wall includes a second groove having a circular arc shape;

the plug shell is a rectangular socket shell and comprises a rectangular plug shell top wall and 4 plug shell side walls extending from the outer edge of the plug shell top wall to the socket shell, wherein two long-edge plug shell side walls which are long in edge and are oppositely arranged and two short-edge plug shell side walls which are short in edge and are oppositely arranged are arranged in the 4 plug shell side walls, one of the two short-edge plug shell side walls is provided with a circular arc-shaped second bulge, and the other short-edge plug shell side wall is provided with the first groove;

said barrel connected to said short side plug housing sidewall having said second projection; the second recess of the receptacle housing side wall engages the second projection of the plug housing side wall.

Preferably, the cylinder is integrally formed with the plug housing.

Preferably, 4 screw holes are formed at 4 corners of the socket housing, 4 screw holes are also formed at 4 corners of the plug housing, and 4 screws are respectively inserted into the 4 screw holes formed at 4 corners of the plug housing and the 4 screw holes formed at 4 corners of the socket housing so as to enable the socket housing to be tightly connected with the plug housing.

Preferably, a rubber gasket for waterproofing is attached to a lower bottom surface of the socket housing.

Preferably, a sealing rubber ring is embedded between the joints of the socket shell and the plug shell.

Preferably, socket insulating plastic is further attached to the inner wall surface of the socket housing, and plug insulating plastic is further attached to the inner wall surface of the plug housing.

Preferably, the socket terminal has a mounting hole, a nut is fixedly mounted in the mounting hole, the plug terminal has a through hole, and the screw passes through the through hole of the plug terminal and is screwed in the nut, so that the socket terminal is fixedly connected with the plug terminal.

Preferably, the socket terminal portion protrudes outside the socket housing.

Preferably, the open end of the cylinder is also covered with a tail cover.

In the technical scheme of the invention, as the side wall of the plug shell is connected with the cylinder, the shielding elastic ring can be arranged in the first limiting groove in advance and is used for being sleeved outside the shielding ring fixedly sleeved with the cable. When the plug shell and the socket shell need to be closed and covered, the cylinder slides relative to the cable in the axial direction so as to enable the plug shell to be in butt joint with the socket shell, and then the screws are screwed to complete the assembly of the electric connector. In conclusion, the electric connector provided by the embodiment is convenient for the installation operation of the cable, and the assembly efficiency is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of an external structure of an electrical connector according to an embodiment of the present invention when a cable is connected thereto;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is another exploded view of FIG. 1;

FIG. 4 is a further exploded view of FIG. 1;

FIG. 5 is an exploded view of the receptacle of FIG. 3;

fig. 6 is a cross-sectional view of fig. 1.

The reference numbers indicate:

1-an electrical connector housing;

11-a socket housing; 111-a receptacle housing bottom wall; 112A-long edge receptacle housing side walls; 112B-short edge receptacle housing side walls; 1121 — a first projection; 1122-a second groove; 113-a screw hole; 114-socket insulating plastic;

12-a plug housing; 121-plug housing top wall; 122A-long edge plug housing sidewall; 122B-short side plug housing sidewalls; 1221-a second projection; 1222-a first recess; 123-screw holes; 124-plug insulating plastic;

13-cylinder; 131-a first limiting groove; 132-a second restraint slot;

2-socket terminals; 21-a nut; 3-a plug terminal; 4-a shield ring; 5-shielding the elastic ring; 6-cable sealing ring; 7-tail cover; 8-rubber ring; 9-a screw; 10-a rubber gasket;

20-cable wires; 30-screw joint.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides an electric connector suitable for high current.

FIG. 1 is a schematic view of an external structure of an electrical connector according to an embodiment of the present invention when a cable is connected thereto; FIG. 2 is an exploded view of FIG. 1; FIG. 3 is another exploded view of FIG. 1; FIG. 4 is a further exploded view of FIG. 1; FIG. 5 is an exploded view of the receptacle of FIG. 3; fig. 6 is a cross-sectional view of fig. 1. Referring to fig. 1 to fig. 6, the electrical connector provided in the present embodiment includes an electrical connector housing 1 formed by a socket housing 11 and a plug housing 12 hermetically covering the socket housing 11.

In the present embodiment, the socket housing 11 and the plug housing 12 are both rectangular structures, specifically, the socket housing 11 includes a rectangular socket housing bottom wall 111 and 4 socket housing side walls extending from an outer edge of the socket housing bottom wall 111 to the plug housing 12, and the socket housing bottom wall 111 and the 4 socket housing side walls surround to form a socket housing accommodating cavity; among the 4 socket housing sidewalls, there are two long-side socket housing sidewalls 112A with opposite long sides and two short-side socket housing sidewalls 112B with opposite short sides, and of the two short-side socket housing sidewalls 112B, one of the short-side socket housing sidewalls 112B has a circular arc-shaped first protrusion 1121, and the other short-side socket housing sidewall 112B has a circular arc-shaped second groove 1122.

Correspondingly, the plug housing 12 includes a rectangular plug housing top wall 121 and 4 plug housing side walls extending from the outer edge of the plug housing top wall 121 to the socket housing 11, and the plug housing top wall 121 and the 4 plug housing side walls surround to form a plug housing accommodating cavity; of the 4 plug housing sidewalls, there are two long-side plug housing sidewalls 122A and two short-side plug housing sidewalls 122B, one of the two short-side plug housing sidewalls 122B has a circular arc-shaped second protrusion 1221, and the other short-side plug housing sidewall has a circular arc-shaped first recess 1222.

The first projection 1121 of the circular arc shape of the receptacle housing side wall is engaged with the first recess 1222 of the circular arc shape of the plug housing side wall. The second recesses 1122 of the circular arc shape of the side walls of the receptacle housing are engaged with the second projections 1221 of the circular arc shape of the side walls of the plug housing.

The cylinder 13 is connected to the short-side plug housing side wall 122B with the circular arc-shaped second protrusion 1221, the plug housing side wall with the circular arc-shaped second protrusion is further connected with a cylinder 13 communicated with the inner cavity of the plug housing 12, the cylinder 13 is a hollow structure with two ends penetrating through, and the cylinder 13 and the plug housing 12 can be integrally formed. The electric cable 20 is connected to the plug terminal 3 through the cylinder 13.

The inner wall of the cylinder 13 is provided with a first limiting groove 131, the first limiting groove 131 is internally provided with a shielding ring 4 and a shielding elastic ring 5, the shielding elastic ring 5 is sleeved outside the shielding ring 4, and the shielding ring 4 is sleeved outside the cable 20 to fix the cable 20.

The inner wall surface of the cylinder 13 is further provided with a second limiting groove 132, a cable sealing ring 6 is installed in the second limiting groove 132, and the cable sealing ring 6 is sleeved outside the cable 20 to prevent water and dust of the cable 20. The second limiting groove 132 is located on a side of the first limiting groove 131 away from the plug housing 12. The open end of cylinder 13 is also capped with a tail cap 7 to enclose cable gland 6 within cylinder 13.

4 screw holes 113 are formed at 4 corners of the socket housing 11, and 4 screw holes 123,4 are also formed at 4 corners of the plug housing 12, and the screws 9 are respectively inserted into the 4 screw holes 123 formed at 4 corners of the plug housing 12 and the 4 screw holes 113 formed at 4 corners of the socket housing 11, so that the socket housing 11 and the plug housing 12 are fastened and connected. Socket insulating plastic 114 is attached to the inner wall surface of the socket housing 11, and plug insulating plastic 124 is attached to the inner wall surface of the plug housing 12. The socket terminal 2 is disposed in the socket housing 11, and for convenience of wiring, the socket terminal 2 may be selectively partially protruded out of the socket housing 11, and the plug terminal 3 is disposed in the plug housing 12.

Wherein, the socket terminal 2 and the plug terminal 3 are tightly connected by a screw 30. Specifically, in the present embodiment, the receptacle terminal 2 has a mounting hole, and a nut 21 is fixedly mounted in the mounting hole, for example, by an interference fit. The plug terminal 3 has a through hole, and the screw 30 is screwed into the nut 21 through the through hole of the plug terminal 3, so that the receptacle terminal 2 and the plug terminal 3 are tightly connected. The plug terminal 3 is fixedly connected with a cable.

As mentioned above, when the electrical connector of the present embodiment is used, the plug terminal 3 connected to the cable 20 is passed through the cylinder 13, wherein the first groove 1222 of the circular arc shape formed on the short side plug housing sidewall 122B can serve as a clearance hole, so that the plug terminal 3 connected to the cable 20 can be smoothly pulled out in a straight line form along the axial direction, the plug terminal 3 connected to the cable 20 partially extends out of the plug housing 12, and then the receptacle terminal 2 and the plug terminal 3 are tightly connected by the screw 30. Since the cylinder 13 is connected to the side wall of the plug housing, the shielding elastic ring 5 can be pre-disposed in the first limiting groove 131, and the shielding elastic ring 5 is used to be sleeved on the shielding ring 4 fixed to the cable 20. When the plug shell 12 and the socket shell 11 need to be closed and covered, the cylinder 13 slides relative to the cable 20 along the axial direction, so that the plug shell 12 is butted with the socket shell 11, and then the screw 9 is screwed to complete the assembly of the electric connector. In conclusion, the electric connector provided by the embodiment is convenient for the installation operation of the cable, and the assembly efficiency is effectively improved.

In order to achieve a better sealing effect when the socket housing 11 and the plug housing 12 are closed, a sealing rubber ring 8 is embedded between the joints of the socket housing 11 and the plug housing 12. For example, a caulking groove may be formed on the end surface of the side walls of 4 socket housings for placing the rubber ring 8 for sealing, it is worth mentioning that the rubber ring 8 has a shape adapted to the contour of the end surface of the side walls of 4 socket housings, that is, the whole body is also rectangular, one end of the rubber ring 8 has a groove having the same shape as the first groove 1222 of circular arc shape, and the other end has a protrusion having the same shape as the second protrusion 1221 of circular arc shape. Of course, the rubber ring 8 may be embedded on the end faces of the side walls of the 4 jack housings.

In addition, when the electrical connector is used, the socket housing 11 is generally fixed to the electric equipment in advance, and therefore, a rubber gasket 10 for waterproofing may be further attached to the lower bottom surface of the socket housing 11.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims

1. An electric connector is characterized by comprising a socket shell and a plug shell hermetically covered with the socket shell;

the socket shell comprises a socket shell bottom wall and a socket shell side wall extending from the outer edge of the socket shell bottom wall to the plug shell, the socket shell bottom wall and the socket shell side wall are enclosed to form a socket shell accommodating cavity, and a socket terminal is arranged in the socket shell accommodating cavity;

the plug shell comprises a plug shell top wall and a plug shell side wall extending from the outer edge of the plug shell top wall to the socket shell, the plug shell top wall and the plug shell side wall are enclosed to form a plug shell accommodating cavity, and a plug terminal is arranged in the plug shell accommodating cavity;

the socket terminal and the plug terminal are fixedly connected through a screw connector;

the side wall of the plug shell is also connected with a cylinder communicated with the plug shell accommodating cavity, and the cylinder is of a hollow structure with two ends penetrating through;

a first limiting groove and a second limiting groove are formed in the inner wall surface of the cylinder, a shielding ring and a shielding elastic ring are mounted in the first limiting groove, the shielding elastic ring is sleeved outside the shielding ring, a cable sealing ring is mounted in the second limiting groove, and the second limiting groove is located on one side, away from the plug shell, of the first limiting groove;

2. The electrical connector of claim 1, wherein said receptacle housing is a rectangular receptacle housing, said receptacle housing including a rectangular receptacle housing bottom wall and 4 receptacle housing side walls extending from an outer edge of said receptacle housing bottom wall toward said plug housing, said 4 receptacle housing side walls having two long side, oppositely disposed long side receptacle housing side walls and two short side, oppositely disposed short side receptacle housing side walls, one of said two short side receptacle housing side walls having said first protrusion and the other of said two short side receptacle housing side walls having a second recess in the shape of a circular arc;

said barrel connected to said short side plug housing sidewall having said second projection;

the second recess of the receptacle housing side wall engages the second projection of the plug housing side wall.

3. The electrical connector of claim 1, wherein the cylinder is integrally formed with the plug housing.

4. The electrical connector of claim 2, wherein 4 screw holes are formed at 4 corners of the socket housing, 4 screw holes are also formed at 4 corners of the plug housing, and 4 screws are inserted into the 4 screw holes formed at 4 corners of the plug housing and the 4 screw holes formed at 4 corners of the socket housing respectively to fasten the socket housing to the plug housing.

5. The electrical connector of claim 2, wherein a rubber gasket for waterproofing is attached to a lower bottom surface of the socket housing.

6. The electrical connector of claim 2 wherein a sealing rubber ring is interposed between the junction of said receptacle housing and said plug housing.

7. The electrical connector of claim 2, wherein a socket insulating plastic is further attached to an inner wall surface of said socket housing, and a header insulating plastic is further attached to an inner wall surface of said header housing.

8. The electrical connector of claim 1, wherein the receptacle terminal has a mounting hole, a nut is fixedly mounted in the mounting hole, the plug terminal has a through hole, and the screw member is screwed into the nut through the through hole of the plug terminal to fasten the receptacle terminal to the plug terminal.

9. The electrical connector of claim 1, wherein said receptacle terminal portions extend beyond said receptacle housing, and said barrel open end further includes a tail cap.

10. The electrical connector of claim 1, wherein the receptacle terminals are receptacle copper bar terminals and the plug terminals are plug wire ear terminals.