CN109546392B

CN109546392B - Power supply connector

Info

Publication number: CN109546392B
Application number: CN201710860406.0A
Authority: CN
Inventors: 王敬波; 胡涛; 王伟; 郑启航
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2017-09-21
Filing date: 2017-09-21
Publication date: 2020-09-08
Anticipated expiration: 2037-09-21
Also published as: CN109546392A

Abstract

The present invention relates to a power connector. The power connector comprises a connector shell, wherein a switching module and a wiring contact element with a wiring structure are arranged in the connector shell, the switching module comprises a switching contact element and an insulator with a switching contact element mounting hole, one end of the switching contact element is provided with a first plug-in structure used for being in plug-in fit with the wiring contact element, the other end of the switching contact element is provided with a second plug-in structure used for being in plug-in fit with a contact element of an adaptive connector, the switching contact element is provided with a mounting structure, and the press fitting part is in top pressure fit with the mounting structure of the switching contact element so as to press and fix the switching contact element.

Description

Power supply connector

Technical Field

The present invention relates to a power connector.

Background

When the electric automobile is charged, the charging connector, namely the power connector, is used for direct current charging. For example, a charging connector disclosed in chinese patent document No. CN 201490425U includes a housing of the charging connector, a plug and a socket that are adapted to be plugged into each other, a conductive contact member installed in the socket housing, a connection structure provided at one end of the contact member and adapted to be electrically connected to a bus bar, and a plug end provided at the other end of the contact member and adapted to be plugged into a socket of the plug. The electric automobile is very big when carrying out the direct current and charging power, and correspondingly, charging current also can be very big, can make the inside temperature of socket that charges very high like this, makes the conductive contact ablation inefficacy because the high temperature very easily in the use, needs to change the maintenance, and this kind of socket that charges is connected the busbar owing to conductive contact, and it is very inconvenient to change.

Aiming at the problem that the contact is inconvenient to replace and maintain, an electric connector with a plug end capable of being integrally replaced appears in the market, for example, a power plug disclosed in the Chinese patent document with the publication number of CN 202737201U, the power plug comprises a butt joint end for being in butt joint with an adaptive connector in an inserting manner and a cable control end for connecting a cable, the butt joint end is a switching module, the butt joint end comprises a front insulator and a front jack component, the front jack component is installed in an installation hole of the front insulator, the rear end of the front jack component is a pin structure, the butt joint end and the cable control end are fixed together, the pin structure at the rear end of the front jack component is in inserting fit with the jack structure at the front end of the rear jack component to realize conductive connection, and the electric connector can be integrally disassembled and replaced for the butt joint end to facilitate maintenance. The front jack assembly of the connector, namely the switching contact piece, is fixed in the front insulator through the insulating pin, the switching contact piece is required to be installed in the front insulator firstly during assembly, then the switching contact piece is fixed in sequence through the insulating pin, when the switching contact piece is required to be detached from the front insulator, the insulating pin is required to be detached firstly, and the detaching of the insulating pin is complex, so that the problem of complex detaching of the switching contact piece is caused.

Disclosure of Invention

The invention aims to provide a power connector, which solves the problem that a switching contact piece of the existing power connector is complex to disassemble.

In order to achieve the purpose, the power connector adopts the following technical scheme:

technical scheme 1 of the power connector: the power connector comprises a connector shell, wherein a switching module and a wiring contact element with a wiring structure are arranged in the connector shell, the switching module comprises a switching contact element and an insulator with a switching contact element mounting hole, one end of the switching contact element is provided with a first plugging structure used for being in plugging fit with the wiring contact element, the other end of the switching contact element is provided with a second plugging structure used for being in plugging fit with a contact element of an adaptive connector, the switching contact element is provided with a mounting structure, the insulator is provided with a stop surface in stop fit with the mounting structure, the switching module further comprises a press fitting part used for being in press fit with the mounting structure so as to press and fit the mounting structure on the stop surface, the press fitting part is in press fit with the mounting structure of the switching contact element so as to press and fix the switching contact element, the structure is simple, and the switching contact element can be taken out of the contact element mounting hole by disassembling the, the dismounting is convenient, and the problem that the dismounting of the switching contact piece is complicated due to the fact that the switching contact piece is fixed by the insulating pin is solved.

Technical solution 2 of the power connector is the power connector according to technical solution 1: the mounting structure is a boss which extends outwards along the radial direction of the periphery of the switching contact element, the press-fitting element is in press fit with the rear side face of the boss, a groove matched with the boss is formed in the rear end of the contact element mounting hole, and the stop face is a groove bottom matched with the groove and the boss in a stop manner, so that the structure is simple and the mounting is convenient.

Technical means 3 of the power connector is the power connector according to the technical means 2: the switching contact piece is provided with an extension part extending backwards on the rear side of the boss, and the pressing part is provided with an avoiding hole for the extension part to extend backwards, so that the pressing part and the switching contact piece are matched more closely and reliably.

Technical means 4 of the power connector is the power connector according to technical means 3: the pressing piece is a pressing plate, the pressing plate is connected with the insulator through a screw, and the pressing piece is simple in structure and convenient to install.

Technical means 5 of the power connector is the power connector according to technical means 4: and a concave-convex positioning matching structure is arranged between the press-mounting plate and the insulator, so that the assembly is convenient.

Technical means 6 of the power connector is the power connector according to technical means 4: the switching contact is equipped with two, the hole of dodging on the pressure equipment board sets up relatively, the screw sets up the position department between two holes of dodging.

Technical solution 7 of the power connector, on the basis of any one of technical solutions 1 to 6 of the power connector: and a mounting table for mounting the insulator is arranged in the inner cavity of the connector shell, and the mounting table is provided with a jacking surface for jacking and press-fitting with the press-fitting piece.

Technical means 8 of the power connector is the power connector according to claim 7, wherein: the insulator is provided with a containing groove for containing the press fitting piece, the press fitting piece is installed in the containing groove, and the rear side face of the press fitting piece is flush with the rear side face of the insulator.

Technical means 9 of the power connector is the power connector according to claim 7, wherein: and a sealing structure is arranged between the insulator and the mounting table.

Technical means 10 of the power connector is the power connector according to claim 9, wherein: the rear end of the insulator is provided with a skirt structure, and the sealing structure is a sealing rubber gasket arranged between the skirt structure and the mounting platform.

Technical solution 11 of the power connector, on the basis of any one of technical solutions 1 to 6 of the power connector: the boss is a circular table, and the groove is a circular groove matched with the boss.

Technical solution 12 of the power connector is the power connector according to any one of technical solutions 1 to 6: the first inserting structure and the second inserting structure of the switching contact element are jacks.

Drawings

FIG. 1 is a schematic diagram of a power connector according to an embodiment of the present invention;

FIG. 2 is a schematic view of the mating configuration of the transfer contact and the insulator of FIG. 1;

FIG. 3 is a schematic view of the mating structure of the insulator and the connector housing of FIG. 1;

FIG. 4 is a schematic view of the press-fit assembly of FIG. 2 shown removed;

FIG. 5 is a schematic view of the press-fit assembly of FIG. 3 shown removed;

fig. 6 is a schematic view of the press fitting of fig. 1;

in the drawings: 1. a connector housing; 2. an insulator; 3. a transfer contact; 4. a wiring contact; 5. an insulating platen; 6. a tail housing; 7. pressing and assembling; 8. a signal contact; 11. an installation table; 12. sealing the rubber ring; 21. a skirt structure; 22. sealing the rubber gasket; 23. positioning a groove; 31. a boss; 71. fastening screws; 72. positioning the projection; 73. avoiding the hole.

Detailed Description

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

In the embodiment of the power connector of the present invention, as shown in fig. 1 to 6, the power connector includes a connector housing 1 and a transition module, and the transition module includes a transition contact 3 and an insulator 2 having a transition contact mounting hole. The connector shell 1 is made of insulating materials, so that the contact piece can be directly matched with the connector shell 1 without arranging an additional insulator 2, the connector is simple in structure, and the front end of the connector shell 1 is provided with a square disc shell and is used for being connected with a corresponding frame body. The one end of switching contact 3 is equipped with and is used for the first grafting structure of the cooperation of pegging graft with the wiring contact, the other end is equipped with and is used for the second grafting structure of the cooperation of pegging graft with the contact of adapter connector, switching contact 3 is double-end jack contact, first grafting structure and second grafting structure are the jack promptly, the front end of switching contact 3 is for the connector grafting complex grafting end that is used for supplying the adaptation, the rear end passes through the jack structure and the contact pin structure grafting cooperation of switching contact 3 front end, switching contact 3 of front end takes place to damage the back in the use, just can change switching contact 3 from the dismantlement of wiring contact 4 down, thereby avoid changing whole socket. The jacks at the two ends of the switching contact element 3 are respectively provided with a conductive contact finger, so that the reliability of conductive contact is ensured, the conductive contact capability is improved, and the conductive contact fingers are crown bands which can be wire spring wires, torsion spring pieces or hyperbolic spring pieces and other structures. Be equipped with sealing rubber ring 12 on the inner wall of connector housing front end, to the connector of adaptation after inserting to close, sealing rubber ring 12 realizes the sealing between two connectors between, guarantees sealing performance.

In this embodiment, the power connector is a dc charging socket, two adapting contacts 3 are provided in the power connector, and two connecting contacts 4 are provided corresponding to the adapting contacts 3. The press fitting part 7 is of a plate-shaped structure, that is, the press fitting part 7 is a press fitting plate, two avoiding holes 73 for the rear ends of the switching contact pieces 3 to extend backwards are formed in the press fitting plate, and protrusions for providing press fitting force to the bosses 31 on the switching contact pieces 3 are formed on the side surfaces, matched with the insulator 2, of the avoiding holes 73. The front end of the insulator 2 is provided with a plurality of forward-extending columnar structures, the columnar structures are provided with inner holes, the inner holes form mounting holes for accommodating the jacks at the front ends of the switching contact pieces 3, the corresponding signal contact pieces 8 and the corresponding switching contact pieces 3 are mounted in the inner holes of the columnar structures, and the switching contact pieces 3 are fixed in the mounting holes of the switching contact pieces through press-fitting pieces 7. The rear end hole edge of the installation hole of the switching contact element is provided with an annular groove, the groove bottom of the annular groove forms a straight surface on the insulator, the periphery of the switching contact element 3 is provided with a boss 31 matched with the annular groove, the boss 31 is a ring platform in the embodiment, the ring platform on the switching contact element 3 is inserted into the annular groove and matched with the groove bottom of the annular groove in a blocking manner, and the bulge on the press-fitting element 7 is buckled in the annular groove and matched with the ring platform on the switching contact element 3 in a press-fitting manner. The bosses 31 constitute mounting structures on the transfer contacts. After the press fitting member 7 is fixed to the insulator 2, the rear side surface of the press fitting member 7 is flush with the rear end surface of the insulator 2.

The middle position of the press fitting part 7 is provided with a mounting hole for a fastening screw 71 to pass through, two sides of the mounting hole are oppositely provided with two positioning bulges 72, and the rear end surface of the insulator 2 is provided with a positioning groove 23 for inserting the two positioning bulges 72. Concave-convex positioning fit is realized between the press fitting part 7 and the insulator 2 through the matching of the positioning protrusions 72 and the positioning grooves 23, the installation is convenient, meanwhile, the connection strength of the press fitting part 7 and the insulator 2 is also improved, and the reliability of parts is improved.

An installation table 11 for installing the insulator 2 is arranged in an inner cavity of the connector housing 1, an insertion hole for inserting the rear end of the switching contact 3 is formed in the installation table 11, and after the insulator 2 is connected with the installation table 11, the rear end of the switching contact 3 is inserted into the insertion hole. The rear end of the insulator 2 is provided with a skirt structure 21, the skirt structure 21 and the mounting platform 11 are fastened together through screws after being in stop fit, a sealing structure is further arranged in front of the skirt structure 21 and the mounting platform 11, the sealing structure is a sealing rubber gasket 22 arranged between the skirt structure 21 and the mounting platform 11 in the embodiment, and therefore sealing between the insulator and the mounting platform 11 is achieved, and sealing performance of the connector is guaranteed. The mounting table 11 is provided with a pressing surface for providing pressing force to the press-fitting member 7, and the pressing surface is specifically a front side surface of the mounting table 11 in this embodiment. After the insulator is connected with the connector shell 1, the press fitting piece 7 is in stop fit with the front side face of the mounting table 11, so that a jacking force can be provided for the press fitting piece 7, the mounting table 11 provides a reliable supporting force for the transfer contact piece 3 through the press fitting piece 7 in the plugging process, the transfer contact piece 3 is prevented from loosening, and the reliability of the connector is improved.

The insulating pressing plate 5 is installed at the rear part of the connector shell 1, a press-fitting table used for providing a top pressure for the wiring contact element 4 is arranged on the insulating pressing plate 5, a ring table is arranged on the periphery of the rear end of the wiring contact element 4, the press-fitting table on the insulating pressing plate 5 provides a top pressure for the wiring contact element 4 through the ring table, a blocking edge which is cantilevered backwards and used for being matched with the ring table on the wiring contact element 4 in a blocking mode is arranged at the rear end of the installation table 11, and the wiring contact element 4 is pressed and installed on the blocking edge forwards through the insulating pressing plate 5. The rear housing 6 is used to fix the insulating platen 5 in the connector housing 1. The power connector is also provided with a signal contact element 8 which is used for transmitting electric signals after being plugged with the adaptive connector.

When the power connector is used, when the switching contact piece 3 is ablated, the insulator is detached from the connector shell 1 and integrally replaced, the detaching process is simple and convenient, and the power connector is beneficial to large-area popularization and use. And the problem of high use cost caused by replacing the whole power connector is also avoided. When the switching contact piece 3 needs to be detached from the insulator, the two switching contact pieces 3 can be taken out of the insulator only by screwing the fastening screw 71 off and taking down the press-fitting piece, so that the power connector is convenient to detach, and the problem that the switching contact pieces are detached complexly due to the fact that the switching contact pieces are fixed by the insulating pins is solved.

In other embodiments of the present invention, the front end of the adapting contact element may also be a pin structure, and the adapting contact element is electrically connected to the jack of the adapted plug through the pin structure, and the rear end of the adapting contact element may also be a pin structure, and at this time, the conductive contact finger is mounted on the pin, so that the adapting contact element can be replaced when replaced; the connector housing may also be a metal housing, in which case an insulator is additionally provided in the socket housing, and the contacts of the connector are mounted in the insulator; the power connector may also be a plug connector; the press fitting piece can also directly press fit the rear end face of the transfer contact piece to provide press fitting force for the transfer contact piece; a positioning groove can be arranged on the press-fitting part, and a positioning bulge is arranged on the rear end face of the insulator, so that the press-fitting part and the insulator are positioned and matched; the pressing piece is connected with the insulator shell through a buckle structure; the lug boss on the switching contact piece can also be distributed at intervals in the circumferential direction.

Claims

1. Power connector, including the connector housing, be equipped with switching module and the wiring contact who has wiring structure in the connector housing, its characterized in that: the adapter module comprises an adapter contact element and an insulator with an adapter contact element mounting hole, wherein one end of the adapter contact element is provided with a first plug-in structure which is used for being in plug-in fit with the wiring contact element, the other end of the adapter contact element is provided with a second plug-in structure which is used for being in plug-in fit with a contact element of an adapter connector, the adapter contact element is provided with a mounting structure, the insulator is provided with a stop surface which is in stop fit with the mounting structure, and the adapter module further comprises a pressing part which is used for being in press fit with the mounting structure so as to press-fit the mounting structure on; and a mounting table for mounting the insulator is arranged in the inner cavity of the connector shell, and the mounting table is provided with a jacking surface for jacking and press-fitting with the press-fitting piece.

2. The power connector of claim 1, wherein: the mounting structure is a boss which extends outwards along the radial direction of the periphery of the switching contact element, the press-fitting element is in press fit with the rear side face of the boss, a groove matched with the boss is formed in the rear end of the contact element mounting hole, and the stop face is a groove bottom in stop fit with the boss and the groove.

3. The power connector of claim 2, wherein: the switching contact piece is provided with an extension part extending backwards on the rear side of the boss, and the pressing part is provided with an avoiding hole for the extension part to extend backwards.

4. The power connector of claim 3, wherein: the pressing piece is a pressing plate, and the pressing plate is connected with the insulator through a screw.

5. The power connector of claim 4, wherein: and a concave-convex positioning matching structure is arranged between the press-mounting plate and the insulator.

6. The power connector of claim 4, wherein: the switching contact is equipped with two, the hole of dodging on the pressure equipment board sets up relatively, the screw sets up the position department between two holes of dodging.

7. The power connector of claim 1, wherein: the insulator is provided with a containing groove for containing the press fitting piece, the press fitting piece is installed in the containing groove, and the rear side face of the press fitting piece is flush with the rear side face of the insulator.

8. The power connector of claim 1, wherein: and a sealing structure is arranged between the insulator and the mounting table.

9. The power connector of claim 8, wherein: the rear end of the insulator is provided with a skirt structure, and the sealing structure is a sealing rubber gasket arranged between the skirt structure and the mounting platform.

10. A power connector as claimed in any one of claims 2 to 6, wherein: the boss is a circular table, and the groove is a circular groove matched with the boss.

11. The power connector as claimed in any one of claims 1 to 6, wherein: the first inserting structure and the second inserting structure of the switching contact element are jacks.