CN110391531B

CN110391531B - Contact pin and socket

Info

Publication number: CN110391531B
Application number: CN201811570769.1A
Authority: CN
Inventors: 张晓辉; 梁佩琼; 韩见强; 吴泽华; 郭辉
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2018-06-21
Filing date: 2018-12-21
Publication date: 2021-02-05
Anticipated expiration: 2038-12-21
Also published as: CN110391531A

Abstract

The invention relates to a contact pin and a socket. The contact pin comprises a columnar pin body, the rear end of the columnar pin body is a wiring end, the front end of the columnar pin body is provided with a locking groove or a locking hole which is matched with the locking part of the socket in a blocking mode in the inserting direction when the columnar pin body is inserted into the socket so as to avoid being separated from the socket, and a contact section used for being in electric contact with the jack contact piece of the socket is arranged between the wiring end and the locking groove or the locking hole. The socket comprises a shell, wherein a jack is arranged in the shell, a locking piece is movably arranged at the rear end of the jack along the radial direction of the jack in the shell, and the locking piece is provided with a locking part which radially enters a locking groove or a locking hole when a contact pin is in a plugging state and blocks the contact pin in the plugging direction. The problem that the contact pin is easy to fall off under the working environment with high vibration and impact strength is effectively solved, and the use safety is improved.

Description

Contact pin and socket

Technical Field

The invention relates to a contact pin and a socket.

Background

The existing electric connector in the market generally comprises a contact pin and a socket, wherein the contact pin is connected with a cable, the socket is fixed on electronic equipment, and when the electric connector is used, the contact pin is inserted into the socket to realize the connection of the cable and the electronic equipment. Part of contact pins in the existing electric connector are directly exposed outside, and the exposed contact pins are inserted into a socket to realize the connection of a cable and electronic equipment. However, there is no locking structure between the pin and the socket in the prior exposed pin form, when the connected pin and socket are in a working environment with high vibration and impact strength, the pin and socket are likely to move relatively to cause the connection failure between the pin and the socket, which seriously reduces the use safety and reliability of the equipment and easily causes safety and production accidents.

Disclosure of Invention

The invention aims to provide a contact pin and a socket, and aims to solve the problem that the existing exposed contact pin and socket are easy to lose efficacy when in a working environment with high vibration and impact strength.

In order to achieve the purpose, the technical scheme of the contact pin is as follows:

a contact pin comprises a columnar pin body, the rear end of the columnar pin body is a wiring end, the front end of the columnar pin body is provided with a locking groove or a locking hole which is matched with a locking part of a socket in a blocking mode in the inserting direction when the columnar pin body is inserted into the socket so as to avoid being separated from the socket, and a contact section used for being in electric contact with an insertion hole contact piece of the socket is arranged between the wiring end and the locking groove or the locking hole.

Has the advantages that: the contact pin is provided with the locking groove or the locking hole, the socket is provided with the locking part matched with the locking groove or the locking hole, when the socket and the contact pin are in an inserting state, the locking part enters the locking groove or the locking hole to be in blocking fit in the inserting direction, the locking of the contact pin and the socket is realized, the problem that the contact pin is easy to fall off under the working environment with high vibration and impact strength is effectively solved, and the use safety is improved.

Specifically, the front end of the columnar needle body is used for being matched with the socket locking part and is a locking groove, and the locking groove is an annular groove. The locking groove is a ring groove, which is beneficial to increasing the locking area, thereby improving the locking strength of the locking groove and the locking part.

For further improvement of the two technical schemes, the rear end of the columnar needle body is provided with a positioning convex part which is used for being matched with the outer end of the jack on the socket in a stopping way. The locating tab helps prevent over-and over-short insertion pins.

For further definition of the locating projection, the locating projection is a locating ring land. The positioning ring table is helpful for increasing the positioning area of the positioning convex part, thereby enhancing the use safety of the contact pin.

The technical scheme of the socket is as follows:

a socket comprises a shell, wherein jacks are arranged in the shell, a locking piece is movably arranged at the rear end of each jack along the radial direction of each jack of the shell, and the locking piece is provided with a locking part which radially enters a locking groove or a locking hole when a contact pin is in a plugging state and blocks the contact pin in the plugging direction.

Has the advantages that: the locking piece on the socket is provided with the locking part which radially enters the locking groove or the locking hole to block the contact pin in the inserting direction when the contact pin is in an inserting state, and the locking part enters the locking groove or the locking hole to be in blocking fit in the inserting direction, so that the contact pin and the socket are locked, the problem that the contact pin is easy to fall off under the working environment with high vibration and impact strength is effectively solved, and the use safety is improved.

Specifically, the shell is provided with an elastic part, the elastic part acts on the locking part and provides elastic force for the locking part to enable the locking part to move close to the axis of the jack along the radial direction, and the shell is further provided with a stopping structure for limiting the moving range of the locking part. The resilient member and the stop structure cooperate to assist in securing the retaining member in clamping relation to the housing.

When the socket is provided with the elastic piece and the stopping structure, the shell is a bent shell comprising a horizontal section and a vertical section, the jack is arranged on the horizontal section, the vertical section is provided with a vertically arranged accommodating groove at the position connected with the horizontal section and the rear end of the jack, and the locking piece is vertically movably arranged in the accommodating groove. The retaining member is located on the vertical section at the location of the connection with the horizontal section, the rear end of the receptacle helping to keep the pin from shifting in the plugging direction.

When setting up the holding tank on the casing, the elastic component provides the locking member vertical section's of the back of the body elastic force, has the end of pressing that supplies operating personnel to press the locking member towards vertical section on the locking member. The pressing end is arranged, so that the operator can press the pressing end conveniently.

The concrete position to pressing the end is further injectd, presses the end to be located the one end of the vertical section of retaining member dorsad, and the locking part is located the one end that is close to the holding tank of retaining member. The pressing end is arranged on the outer side of the shell and is beneficial to operating the pressing end.

And further limiting the stop structure, wherein the surface of the locking part is provided with a convex buckling block, the groove wall of the accommodating groove is provided with a buckling groove for the buckling block to extend into, and the groove wall of the buckling groove forms the stop structure. The catching groove arranged on the accommodating groove forms the stopping structure, and the stopping structure is convenient to arrange.

The bending type shell is further limited to be of a three-section split type structure, wherein the first part is a horizontal section and a partial vertical section, the second part is a residual vertical section, and the third part is a clamping sleeve for fixing the first partial vertical section and the second partial vertical section together. Facilitating quick assembly of the socket.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of a socket of the present invention;

FIG. 2 is a first cross-sectional view of the receptacle of FIG. 1;

FIG. 3 is a second cross-sectional view of the receptacle of FIG. 1;

FIG. 4 is a first three-dimensional view of a retaining member of a first receptacle embodiment of the present invention;

FIG. 5 is a second three-dimensional view of the retaining member of the first receptacle embodiment of the present invention;

FIG. 6 is a third three-dimensional view of the retaining member of the first receptacle embodiment of the present invention;

FIG. 7 is a first three-dimensional view of a housing of a first receptacle embodiment of the present invention;

FIG. 8 is a second three-dimensional view of the housing of the first receptacle embodiment of the present invention;

FIG. 9 is a schematic diagram of a first embodiment of a pin of the present invention;

FIG. 10 is a cross-sectional view of a first pin embodiment of the present invention inserted into and locked with a socket;

FIG. 11 is a cross-sectional view of a pin of one embodiment of the present invention shown inserted into and disengaged from a socket;

in the drawings: 1. a socket; 11. a housing; 111. a limiting hole; 112. a return spring positioning table; 113. a guide groove; 12. a locking member; 121. a stopping table; 122. a guide post; 123. a limiting table; 124. a return spring mounting hole; 13. a jack; 14. a return spring; 2. a columnar needle body; 21. and (4) locking the groove.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 8, the first embodiment of the socket of the present invention includes a housing 11, the housing 11 is an L-shaped structure, a horizontal section of the L-shaped housing 11 is provided with a jack contact, and a vertical section of the L-shaped housing 11 is provided with a terminal. The shell 11 is of a split structure, the split shell 11 comprises three parts, the first part is a horizontal section and a partial vertical section, the second part is a residual vertical section, and the third part is a clamping sleeve for fixing the vertical sections in the two parts together. The lower end of the vertical section of the shell 11 is provided with a convex clamping block, the clamping block is circumferentially arranged on the shell 11, a clamping hole matched with the clamping block is formed in the clamping sleeve, and the clamping block and the clamping hole jointly act to fix the sectional type shell 11 together.

The horizontal section of the limiting hole 111 is a cylindrical structure, the cylindrical horizontal section and the vertical section of the housing 11 form an included angle of ninety degrees, the inner wall surface of the cylindrical structure is fixedly connected with the insertion hole 13, and of course, the cylindrical structure provided with the insertion hole 13 can form any angle with the housing 11 of other parts as required in other embodiments. Install jack 13 on tubular structure's the internal face, casing 11 is provided with the holding tank of vertical setting in the position that horizontal segment and vertical section are connected, the rear end of jack 13, and retaining member 12 movable mounting is in the holding tank, and it needs to explain, the front end of socket 1 grafting direction is socket 1's rear end, socket 1 grafting direction's rear end.

In order to enhance the fixing strength of the locking member 12 and the housing 11, a return spring 14 is installed between the housing 11 and the locking member 12, and the return spring 14 provides a force to the locking member 12 to move it close to the axis of the insertion hole in the radial direction. The housing 11 is provided with a return spring positioning table 112 for mounting the return spring 14. The number of the return spring positioning stages 112 in this embodiment is two, and the locking member 12 has two return spring mounting holes 124 corresponding to the return spring positioning stages 112. Two corresponding sides of the locking member 12 are respectively provided with a limiting platform 123, the limiting platform 123 forms a buckling block, the limiting platform 123 is of a wedge-shaped structure, and the upper end face of the wedge-shaped limiting platform 123 is a limiting face. The shell 11 is provided with a limiting hole 111 in stop fit with the limiting surface of the wedge-shaped limiting table 123, the limiting hole 111 forms a catching groove, the limiting hole 111 is rectangular, the height of the rectangular limiting hole 111 is greater than the length of the wedge-shaped limiting table 123, the design aims to enable the locking member 12 to move in the height direction of the limiting hole 111, the limiting surface of the wedge-shaped limiting table 123 is stopped with the hole wall of the rectangular limiting hole 111, and the limiting table 123 in the embodiment is wedge-shaped, so that the locking member 12 can be inserted into the shell 11 conveniently.

The locking member 12 in this embodiment is a rectangular body, the interior of the rectangular body locking member 12 is hollow, and one end of the upper end surface of the locking member 12 facing away from the insertion hole 13 is provided with a retaining edge extending outwards. The purpose of the design is to increase the friction between the finger and the retaining member 12 when the force is applied. Furthermore, the upper end surface of the locking member 12 is a pressing end, which is also advantageous in order to facilitate the application of force to the locking member 12. The side of the locking member 12 facing the insertion hole 13 has a through hole communicating with the central cavity of the locking member 12, and the lower side wall of the through hole has a stop 121, in other embodiments, the stop 121 may be disposed on the wall of the through hole, and the cross section of the stop 121 has a trapezoidal structure, so that the stop 121 and the locking groove can be stopped by clamping the stop 121 with the locking groove when entering the locking groove.

The locking member 12 is provided with a guiding post 122 at a side thereof, the guiding post 122 is extended in the insertion direction of the locking member 12 and the housing 11, of course, the housing 11 is provided with a guiding groove 113 corresponding to the guiding post 122, the guiding post 122 is provided on the locking member 12 and the guiding groove 113 is provided on the housing 11 for moving the locking member 12 in the housing 11 along the fixing direction. In other embodiments, the guide post 122 may be provided on the housing 11 and the guide slot 113 may be provided on the locker 12.

As shown in fig. 9 to 11, the first embodiment of the contact pin of the present invention includes a cylindrical pin body 2, a terminal is disposed at a rear end of the cylindrical pin body 2, a locking groove 21 is disposed at a front end of the cylindrical pin body 2, the locking groove is in stop fit with a locking portion of a socket in an insertion direction when the cylindrical pin body is inserted into the socket, so as to prevent the cylindrical pin body from coming off the socket, and a contact section for electrically contacting with a jack contact of the socket is disposed between the terminal and the locking groove 21. It should be noted that the front end of the insertion direction of the insertion needle is the front end of the columnar needle body, and the rear end of the insertion direction of the insertion needle is the rear end of the columnar needle body. The locking groove 21 in this embodiment is an annular groove. The rear end of the columnar needle body 2 is provided with a positioning platform in stop fit with the outer end of the jack on the socket, and the positioning platform is a ring platform.

When a contact pin is required to be inserted into the socket, the locking part 12 on the socket 1 is pressed, the columnar needle body 2 is inserted into the socket 1, the stopping table 121 on the columnar needle body 2 is stopped with the shell of the socket 1, the locking groove 21 of the columnar needle body 2 enters the through hole on the locking part 12, the force for pressing the locking part 12 is removed, and the locking part 12 clamps the columnar needle body 2 in the socket 1 under the action of the reset spring 14, so that the locking of the columnar needle body 2 and the socket 1 is realized.

The second embodiment of the pin of the present invention is different from the first embodiment of the pin in that the front end of the pin body in this embodiment is provided with a locking hole which is engaged with the locking portion of the socket in a blocking manner in the plugging direction when the pin body is inserted into the socket so as to prevent the pin body from coming off the socket. The rest is the same as the first embodiment, and is not described again.

Claims

1. A socket is characterized by comprising a shell, wherein a jack is arranged in the shell, a locking piece is movably arranged at the rear end of the jack along the radial direction of the jack of the shell, the locking piece is provided with a locking part which radially enters a locking groove when a contact pin is in an inserting state and blocks the contact pin in the inserting direction, an elastic piece is arranged on the shell, the elastic piece acts on the locking piece and provides elastic force for the locking piece to enable the locking part to move along the axial line close to the jack in the radial direction, a blocking structure for limiting the moving range of the locking piece is further arranged on the shell, the shell is a bent shell comprising a horizontal section and a vertical section, the jack is arranged on the horizontal section, a vertically arranged accommodating groove is arranged at the position connected with the vertical section on the horizontal section and the rear end of the jack, the locking piece is vertically and movably arranged in the accommodating groove, the elastic piece provides the elastic force for the locking piece to face away from the vertical section, and a, the surface of the locking part is provided with a convex buckling block, the wall of the accommodating groove is provided with a buckling groove for the buckling block to extend into, the wall of the buckling groove forms the stop structure, the shell is provided with a reset spring positioning table for mounting a reset spring, the number of the reset spring positioning tables is two, the locking part is provided with two reset spring mounting holes corresponding to the reset spring positioning table, two corresponding side surfaces of the locking part are respectively provided with a limiting table which forms the buckling block, the limiting table is of a wedge-shaped structure, the upper end surface of the wedge-shaped limiting table is a limiting surface, the shell is provided with a limiting hole matched with the limiting surface stop of the wedge-shaped limiting table, the limiting hole forms the buckling groove, the limiting hole is rectangular, the height of the rectangular locking part is greater than the length of the wedge-shaped limiting table, so that the locking part can move in the height direction of the limiting hole, and the limiting surface of the wedge-shaped limiting, the locking piece is of a rectangular structure, the inside of the rectangular locking piece is hollow, a through hole communicated with the central cavity of the locking piece is formed in the side face, facing the insertion hole, of the locking piece, a stopping table is arranged on the lower side wall of the through hole, and the cross section of the stopping table is of a trapezoidal structure, so that the stopping table can be clamped with the locking groove when entering the locking groove, and stopping of the stopping table and the locking groove is achieved.

2. The receptacle of claim 1 wherein the pressing end is located at an end of the retaining member facing away from the vertical section and the retaining portion is located at an end of the retaining member adjacent the receiving channel.

3. The jack of claim 1 wherein the housing is a three-piece split structure with a first portion being a horizontal segment and a partial vertical segment, a second portion being a remaining vertical segment, and a third portion being a ferrule holding the first and second vertical segments together.