CN109546392B - Power supply connector - Google Patents

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 connector

technical field

The present invention relates to a power connector.

Background technique

When charging an electric vehicle, a charging connector, that is, a power connector, is used for DC charging. For example, a charging connector disclosed in a Chinese patent document with an authorization announcement number of CN201490425 U, a plug and a socket that are adapted to be inserted are installed on the shell of the connector, and a conductive contact is installed in the socket shell. One end of the plug is provided with a wiring structure for conductive connection with the busbar, and the other end is a plug-in end for fitting and inserting with the jack of the plug. When the electric vehicle is charged with DC, the charging power is very large, and correspondingly, the charging current is also very large, which will make the internal temperature of the charging socket very high, and it is easy to ablate the conductive contacts due to the high temperature during use. , it needs to be replaced and repaired, and this kind of charging socket is very inconvenient to replace because the busbar is connected to the conductive contact.

Aiming at the problem of inconvenient replacement and maintenance of contacts, an electrical connector with integrally replaceable plug ends has appeared on the market. For the mating end that is mated with the matching connector and the cable control end for connecting cables, the mating end is a transfer module, and the mating end includes a front insulator and a front jack assembly, and the front jack assembly is installed in the In the installation hole of the front insulator, the rear end of the front jack assembly is a pin structure. After the butt end and the cable control end are fixed together, the pin structure at the rear end of the front jack assembly is the same as the jack structure at the front end of the rear jack assembly. The conductive connection is realized by plugging and mating, and the electrical connector can be disassembled as a whole for replacement of the butt end, which is convenient for maintenance. The front jack assembly of this type of connector, that is, the transfer contacts, is fixed in the front insulator by insulating pins. When assembling, the transfer contacts need to be installed in the front insulator first, and then the transfer contacts are fixed in sequence with insulating pins. , when the transfer contact needs to be disassembled from the front insulator, the insulating pin needs to be disassembled first, and the disassembly of the insulating pin is cumbersome, resulting in the problem of complicated disassembly of the transfer contact.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a power connector to solve the problem of complicated disassembly of the transfer contacts of the existing power connector.

In order to achieve the above purpose, the power connector of the present invention adopts the following technical solutions:

Technical solution 1 of a power supply connector: a power supply connector, including a connector housing, a transfer module and a wiring contact piece with a wiring structure are arranged in the connector housing, the transfer module including the transfer contact piece and An insulator with a mounting hole for a transfer contact piece, one end of the transfer contact piece is provided with a first plug-in structure for inserting and mating with the wiring contact piece, and the other end is provided with a contact piece for mating with the adapter connector The second plug-in structure for plug-and-match, the transfer contact piece is provided with a mounting structure, the insulator is provided with a stop surface that stops and cooperates with the mounting structure, and the transfer module further includes a The press fitting is press-fitted with the mounting structure to press-fit the mounting structure on the stop surface, and the press fitting is press-fitted with the mounting structure of the transfer contact piece to press-fit and fix the transfer contact piece, and the structure is simple , it is necessary to remove the press fitting when the transfer contact is disassembled, and the transfer contact can be taken out from the contact mounting hole, which is convenient for disassembly, and solves the cumbersome disassembly of the transfer contact caused by the use of insulating pins to fix the transfer contact. The problem.

The technical solution 2 of the power connector is based on the technical solution 1 of the power connector: the installation structure is a boss extending outward along the radial direction on the outer circumference of the transfer contact, and the pressing part is connected to the The rear side of the boss is press-fitted, the rear end of the contact mounting hole is provided with a groove that fits with the boss, and the stop surface is for the groove and the boss to stop The matched groove bottom has a simple structure and is easy to install.

The technical solution 3 of the power connector is based on the technical solution 2 of the power connector: the transfer contact piece has a rearwardly extending extension on the rear side of the boss, and the press-fitting piece is provided with a The rearwardly protruding escape hole of the extension part makes the cooperation between the press-fitting part and the transfer contact part more close and reliable.

The technical solution 4 of the power connector is based on the technical solution 3 of the power connector: the press-fitting part is a press-fitting plate, and the press-fitting plate is connected to the insulator by screws, with a simple structure and convenient installation.

The technical solution 5 of the power connector is based on the technical solution 4 of the power connector: a concave-convex positioning and matching structure is provided between the press-fitting plate and the insulator, and the assembly is convenient.

The technical solution 6 of the power connector is based on the technical solution 4 of the power connector: the adapter contacts are provided with two, the avoidance holes on the press-fit plate are arranged oppositely, and the screws are provided on the two Avoid positions between holes.

The technical solution 7 of the power connector is based on any one of the technical solutions 1 to 6 of the power connector: the inner cavity of the connector housing is provided with a mounting table for installing the insulator, and the The mounting table has a top pressing surface for press fit with the press fitting.

The technical solution 8 of the power connector is based on the technical solution 7 of the power connector: the insulator is provided with an accommodating groove for accommodating the pressing member, and the pressing member is installed in the accommodating groove and The rear side of the press fit is flush with the rear side of the insulator.

The technical solution 9 of the power connector is based on the technical solution 7 of the power connector: a sealing structure is provided between the insulator and the installation platform.

The technical solution 10 of the power connector is based on the technical solution 9 of the power connector: the rear end of the insulator is provided with a skirt structure, and the sealing structure is arranged between the skirt structure and the mounting table. between the gaskets.

The technical solution 11 of the power connector is based on any one of the technical solutions 1 to 6 of the power connector: the boss is a ring platform, and the groove is a ring groove adapted to the boss.

The technical solution 12 of the power connector is based on any one of the technical solutions 1 to 6 of the power connector: the first plug-in structure and the second plug-in structure of the transfer contact are both sockets.

Description of drawings

1 is a schematic structural diagram of an embodiment of a power connector of the present invention;

FIG. 2 is a schematic structural diagram of the transition contact piece in FIG. 1 cooperating with an insulator;

FIG. 3 is a schematic structural diagram of the insulator in FIG. 1 mating with the connector housing;

FIG. 4 is a schematic structural diagram of FIG. 2 after removing the press fitting;

FIG. 5 is a schematic structural diagram of FIG. 3 after removing the press fitting;

FIG. 6 is a schematic structural diagram of the press-fitting part in FIG. 1;

In the drawings: 1. Connector housing; 2. Insulator; 3. Adapter contact; 4. Wiring contact; 5. Insulation pressure plate; 6. Tail housing; ;11, installation platform; 12, sealing ring; 21, skirt structure; 22, sealing gasket; 23, positioning groove; 31, boss; 71, fastening screw; 72, positioning protrusion; 73, avoidance hole .

Detailed ways

The embodiments of the present invention will be further described below with reference to the accompanying drawings.

The specific embodiment of the power connector of the present invention, as shown in FIG. 1 to FIG. 6 , the power connector includes a connector housing 1 and a transfer module, and the transfer module includes a transfer contact 3 and has a transfer contact to install Hole insulator 2. The connector housing 1 is made of insulating material, so that the contact piece can be directly matched with the connector housing 1, and no additional insulator 2 is required, so that the connector structure is simple, and the front end of the connector housing 1 is provided with a square disc shell body for connecting with the corresponding frame body. One end of the transfer contact piece 3 is provided with a first plug-in structure for inserting and mating with the wiring contact piece, and the other end is provided with a second plug-in structure for inserting and matching with the contact piece of the adapter connector. Component 3 is a double-ended socket contact piece, that is, the first plug-in structure and the second plug-in structure are both sockets, and the front end of the transfer contact piece 3 is the plug-in end used for the plug-in mating of the adapter connector , the rear end is plugged and matched with the pin structure at the front end of the transfer contact 3 through the jack structure. After the transfer contact 3 at the front end is damaged during use, the transfer contact 3 can be removed from the wiring contact 4. The upper and lower parts are removed for replacement, thus avoiding the replacement of the integral socket. The jacks at both ends of the transfer contact piece 3 are provided with conductive contact fingers to ensure the reliability of the conductive contact and improve the conductivity. The conductive contact fingers are crown straps. Hyperbolic reed and other structures. A sealing rubber ring 12 is provided on the inner wall of the front end of the connector housing. After the matching connector is inserted, the sealing rubber ring 12 realizes the sealing between the two connectors and ensures the sealing performance.

In the present embodiment, the power connector is a DC charging socket, there are two transfer contacts 3 in the power connector, and two wiring contacts 4 and two transfer contacts 3 are correspondingly provided. The press-fitting part 7 is a plate-shaped structure, that is, the press-fitting part 7 is a press-fitting plate. The side surface which is matched with the insulator 2 is provided with a protrusion for providing a pressing force to the boss 31 on the transfer contact piece 3 . The front end of the insulator 2 is provided with a plurality of columnar structures extending forward, and the columnar structures are provided with inner holes. The contact pieces 3 are all installed in the inner holes of the columnar structure, and the transfer contact piece 3 is press-fitted and fixed in the transfer contact piece mounting hole through the press-fit piece 7 . The rear end hole of the transfer contact piece is provided with a ring groove on the edge, the groove bottom of the ring groove constitutes the straight surface on the insulator, and the outer circumference of the transfer contact piece 3 is provided with a boss 31 that cooperates with the ring groove. In the embodiment, the boss 31 is a ring platform, and the ring platform on the transfer contact piece 3 is inserted into the ring groove and stops and cooperates with the groove bottom of the ring groove, and the protrusion on the pressing member 7 is buckled in the ring groove. And press fit with the ring platform on the transfer contact piece 3 . The boss 31 constitutes a mounting structure on the transfer contact. After the press-fitting part 7 is relatively fixed to the insulator 2 , the rear side of the press-fitting part 7 is flush with the rear end surface of the insulator 2 .

The middle position of the press fitting 7 is provided with a mounting hole for the fastening screw 71 to pass through, two positioning protrusions 72 are oppositely provided on both sides of the mounting hole, and a rear end face of the insulator 2 is provided for two The positioning groove 23 into which the positioning protrusion 72 is inserted. The positioning protrusions 72 and the positioning grooves 23 are used between the press fitting 7 and the insulator 2 to realize concave and convex positioning, which is convenient for installation, and also improves the connection strength of the press fitting 7 and the insulator 2, and improves the reliability of the parts.

The inner cavity of the connector housing 1 is provided with a mounting table 11 for installing the insulator 2, and the mounting table 11 is provided with an insertion hole for the rear end of the adapter contact 3 to be inserted. The insulator 2 and the mounting table 11 After the connection, the rear end of the transfer contact 3 is inserted into the insertion hole. The rear end of the insulator 2 is provided with a skirt structure 21, and the skirt structure 21 and the mounting table 11 are blocked and fitted together to fasten the two together by screws, and a sealing structure is also provided before the skirt structure 21 and the mounting table 11. In this embodiment, the sealing structure is a sealing gasket 22 disposed between the skirt structure 21 and the mounting table 11, so as to realize the sealing between the insulator and the mounting table 11 and ensure the sealing performance of the connector. The mounting table 11 is provided with a top pressing surface for providing a top pressure to the press fitting 7 , and in this embodiment, the top pressing surface is specifically the front side of the mounting table 11 . After the insulator and the connector housing 1 are connected together, the press-fitting part 7 stops and cooperates with the front side of the mounting table 11, so that a top pressure can be provided to the pressing-fitting part 7. In this way, during the plug-in process, the mounting table 11 passes through the pressing force. The mounting member 7 provides a reliable support force for the transfer contact member 3 to prevent the transfer contact member 3 from loosening, thereby improving the reliability of the connector.

The insulating pressing plate 5 is installed at the rear position of the connector housing 1, and the insulating pressing plate 5 is provided with a pressing table for providing top pressure to the wiring contact piece 4, and a ring table is provided on the outer periphery of the rear end of the wiring contact piece 4, The pressing table on the insulating pressure plate 5 provides top pressure to the wiring contact piece 4 through the ring table. The blocking edge, the insulating pressure plate 5 presses the wiring contact piece 4 forward on the blocking edge. The rear housing 6 is used to fix the insulating pressure plate 5 in the connector housing 1 . The power connector is also provided with a signal contact piece 8, which is used to transmit electrical signals after being inserted into the matching connector.

During the use of the power connector of the present invention, when the transfer contact 3 is ablated, the insulator can be removed from the connector housing 1 and replaced as a whole. Moreover, the problem of high use cost caused by the replacement of the entire power connector is avoided. When this kind of power connector needs to disassemble the transfer contacts 3 from the insulator, it is only necessary to unscrew the fastening screws 71, and then the two transfer contacts 3 can be taken out from the insulator after removing the press fitting. It is convenient to disassemble, and solves the problem of complicated disassembly of the transfer contact piece caused by the use of insulating pins to fix the transfer contact piece.

In other embodiments of the present invention, the front end of the transfer contact can also be a pin structure, and the pin structure is conductively connected to the socket of the matched plug, and the rear end of the transfer contact can also be a pin At this time, the conductive contact finger is installed on the pin, so that it can be replaced when the adapter contact is replaced; the connector shell can also be a metal shell, in this case, an insulator is additionally installed in the socket shell, and the connector Each contact piece of the power supply is installed in an insulator; the power connector can also be a plug connector; the press fitting can also directly press the rear end face of the transfer contact to provide a pressing force to the transfer contact; it can also be pressed A positioning groove is arranged on the mounting piece, and a positioning protrusion is arranged on the rear end surface of the insulator, so as to realize the positioning and cooperation of the pressing piece and the insulator; The stage can also be provided with a plurality of spaced apart in its circumferential direction.

Claims (11)

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.

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