CN202111301U - A high voltage resistant connector assembly - Google Patents

Abstract

The utility model relates to a high voltage resistant connector assembly, including a plug and a socket, the front ends of both are mutually insertedly connected. The plug includes a plug housing; the socket includes a socket housing; a pin is fixedly provided in the plug housing through a soft plug insulator; a jack is fixedly provided in the socket housing through a solid socket insulator; a gap is provided between the inner hole front segment of the plug insulator and the front segment of the pin for the front segment of the socket insulator to insert in; the hole wall of the front segment of the inner hole of the plug insulator is a conical surface with the large opening forward; the front portion of the socket insulator is cladding on the front segment of the jack; the front segment of the inner hole of the socket insulator clings to and coupled to the front segment of the jack; the outer peripheral surface of the front end of the socket insulator is a conical surface which clings to and coupled to the hole wall of the front segment of the inner hole of the plug insulator; and a gap is provided between the outer peripheral surface of the socket insulator and the inner hole wall of the socket housing for accommodating the plug insulator and the plug housing.

Description

A high voltage resistant connector assembly

technical field

The utility model relates to a connector assembly for transmitting electric current or signal.

Background technique

At present, plugs and sockets used in the electrical field are subjected to increasing voltages. In order to ensure the insulation performance of plugs and sockets, for multi-contact plugs and sockets, it is necessary to increase the creepage between adjacent contacts. For plugs and sockets with metal shells, it is also necessary to increase the creepage distance between the contact and the shell. A plug and socket in the prior art, the plug includes a plug housing, the inner hole of the plug housing is fixed with pins through the plug insulator, the pins protrude from the front end of the plug insulator, the pins and the plug housing There is a space for the socket to extend between the inner holes. The socket includes a socket housing. A socket is provided in the inner hole of the socket housing through a socket insulator. The front part of the socket insulator is covered on the front section of the socket. There is an annular space between the outer peripheral surface and the socket housing to accommodate the plug housing. When plugging, the pins are inserted into the jacks, and the plug housing is inserted in the space between the socket housing and the socket insulation, and they are mated together. The pins, sockets and plug insulation are insulated by the socket insulator. Since the socket insulator and the plug shell are in a peeled state, some air will remain between the socket insulator and the plug shell after mating. The air may be ionized, deteriorating the insulation between the plug and socket. the

Utility model content

The purpose of the utility model is to provide a high voltage resistant connector assembly to improve the insulation performance of the connector assembly.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a high-voltage resistant connector assembly, including a plug and a socket that are mated through their respective front ends, the plug includes a plug housing, the socket includes a socket housing, and the plug housing The pin is fixed in the body through the soft plug insulator, and the jack is fixed in the socket housing through the hard socket insulator. There is a gap between the front part of the inner hole of the plug insulator and the front part of the pin for insertion of the front part of the socket insulator , the hole wall of the front part of the inner hole of the plug insulator is a conical surface that flares forward. The outer peripheral surface of the front end of the socket is a tapered surface that fits tightly with the hole wall of the inner hole of the plug insulator, and there is a gap between the outer peripheral surface of the socket insulator and the inner hole wall of the socket housing to accommodate the plug insulator and the plug housing.

The outer peripheral fixing sleeve of the plug housing is provided with a locking sleeve, and the locking sleeve has more than two axially forward-hanging elastic claws in the circumferential direction, and a locking block is arranged outside the front end of the elastic claws. The socket The hole wall of the inner hole of the housing is provided with a locking ring groove that is locked and matched with the locking block of the claw, and the outer sliding sleeve of the locking sleeve is provided with an unlocking sleeve, and a locking block for the claw is provided on the peripheral surface of the unlocking sleeve The protruding square unlocking hole, the surface where the lock block matches the front side of the unlocking hole is a slope that allows the lock block to disengage from the unlocking hole when the locking sleeve moves backward. There is an unlocking hole between the locking sleeve and the plug housing. Move the front side of the unlocking hole after the sleeve to push the lock block to accommodate the adduction space of the elastic claw when the elastic claw is retracted.

The inward space is an axial groove provided on the outer peripheral surface of the plug housing.

The plug housing is screwed with an anti-loosening nut on the rear side of the unlocking sleeve when the unlocking sleeve is moved and unlocked, and cooperates with the rear end of the unlocking sleeve to prevent the unlocking sleeve from being taken off from the plug housing.

The hole wall of the front section of the inner hole of the plug insulator of the utility model is a conical surface that flares toward the front end, and the outer peripheral surface of the front end of the socket insulator is a conical surface that fits tightly with the hole wall of the front section of the inner hole of the plug insulator. When the socket is mated, the hard socket insulator is inserted into the inner hole of the soft plug insulator, and the two are tightly matched to squeeze out the air in the inner hole of the plug insulator. Because the air is squeezed out, there is no The insulation performance of the connector assembly caused by the ionization of the air is reduced. Therefore, the utility model has better insulation performance and good high-voltage resistance. The outer covered socket insulator is plugged into the gap between the inner hole of the plug insulator and the pins, and the plug insulation together with its outer plug shell is plugged into the gap between the inner hole of the socket shell and the socket insulator , the mated pin and the outside of the jack have both the socket insulator part wrapped outside the jack and the plug insulator part located outside the pin, and the air between the two parts has been squeezed out, so After mating, the effective size of the insulating medium between the pin and the socket and the plug shell is relatively large, and there is no dynamic fit relationship between the plug insulator and the plug shell, and the matching and sealing performance between the two is good, and there is no The air gap, the insulation performance of the whole connector assembly is better.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the plug of the present utility model;

Fig. 2 is a schematic structural view of the locking sleeve in Fig. 1;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is a schematic diagram of the three-dimensional structure of the locking sleeve in Fig. 1;

Fig. 5 is a schematic structural view of an embodiment of a socket of the present invention;

FIG. 6 is a schematic structural diagram of the plug insulator in FIG. 1 mated with the socket insulator in FIG. 5 .

Detailed ways

An embodiment of a high-voltage resistant connector assembly. In FIGS. 1-6 , the connector assembly includes a plug and a socket, and the plug and the socket are mated through their respective front ends. The plug includes a plug housing 1 . The plug housing 1 has an inner hole passing through the front and back, and a pin 3 is fixedly arranged in the inner hole of the plug housing 1 through a soft plug insulator 2 . Since the plug insulator 2 is soft, the plug insulator 2 is fixed in the plug housing 1 by the positioning sleeve 4 in this embodiment. In the set ring groove, the outer peripheral surface of the positioning sleeve is provided with an everted fixed edge, and the front side of the fixed edge is press-fitted with the step surface facing the rear end provided on the inner hole wall of the plug housing to realize the insertion of the plug insulator 2 in the plug housing. 1 is fixed, the end of the inner hole of the plug housing 1 is inserted with a compression sleeve 9, and the front surface of the compression sleeve 9 is press-fitted with the rear end surface of the plug insulator 2 to realize the plug insulator 2 in the plug housing. The rear end is fixed, and the rear end of the compression sleeve 9 is press fit with the step surface facing the front end on the wall of the inner hole of the tail sleeve 10 which is screwed on the tail end of the plug housing 1 by threads. A pin 3 is fixedly arranged in the inner hole of the plug insulator 2, and the pin 3 is arranged in the plug insulator 2 through its rear section, and the rear end surface of the pin 3 has a blind hole extending inward for setting a cable. The front end of the plug insulator 2 extends to the front of the pin 3, there is an annular gap between the pin 3 and the front section of the inner hole of the plug insulator 2, and the front section of the inner hole of the plug insulator 2 is a tapered surface that flares toward the front end. The socket includes a socket housing 14 , and an inner hole passing through the front and back is arranged in the socket housing 14 , and a socket 15 is fixedly arranged in the inner hole of the socket housing 14 through a hard socket insulator 17 . The outer peripheral surface of the socket insulator 17 is provided with an outwardly protruding convex edge, and the rear side of the convex edge of the socket insulator 17 is provided with a stepped surface facing the front end on the wall of the inner hole of the socket housing 14 for press fit. The front side of the edge is press-fitted with the positioning nut 16 threaded on the inner hole wall of the socket housing 14 , so as to realize the fixing of the socket insulator 17 in the socket housing 14 . Between the rear section of the outer peripheral surface of the socket insulator 17 and the inner hole of the socket housing 14, a grommet 19 sleeved on the socket insulator 17 is arranged, and the front end surface of the grommet 19 is on top of the stepped surface provided on the socket insulator 17. Press fit, the outer side of the tail end of the socket housing 14 is screwed with a tail fastener 20, and the tail fastener 20 is screwed to the tail end of the socket housing 14 through the internal thread of the front section of the inner hole, and the inner surface of the tail fastener 20 The wall of the hole is provided with a stepped surface which press fits with the rear end surface of the grommet 19 . The socket 15 is fixed in the socket insulator 17, the front end of the socket insulator 17 extends to the front end of the socket 15, the socket insulator 17 completely covers the socket 15, and the front section of the socket 15 has a blind hole for the insertion of the pin , The rear end of the jack 15 has a blind hole for wiring. The front section of the outer peripheral surface of the socket insulator 17 is a conical surface that fits tightly with the conical surface of the inner hole front section of the plug insulator 2 . There is an annular gap between the front section of the inner hole of the socket housing 14 and the socket insulator. When the plug and the socket are plugged together, the pin 3 is inserted in the jack 15, and the front section of the socket insulator 17 is inserted in the gap between the inner hole of the plug insulator 2 and the pin 3, and the front end of the socket insulator 17 is in contact with the plug. The hole walls of the front section of the inner hole of the insulator 2 are tightly fitted. The plug insulator 2 with its outer plug housing 1 is inserted in the gap between the socket housing 14 and the socket insulator 17 .

In the above technical solution, the plug and the socket are connected by direct plugging and unplugging. The outer peripheral fixed sleeve of the plug housing 1 is provided with a locking sleeve 5, and the locking sleeve 5 is installed on the plug housing by the rear end of the plug housing 1. 1, the front end surface of the locking sleeve 5 is press-fitted with the stepped surface facing the rear end provided on the outer peripheral surface of the plug housing 1, and the rear end surface of the locking sleeve 5 is screwed on the outer peripheral surface of the plug housing 1 The fixing nut 7 is press-fitted to realize the fixation of the locking sleeve 5 on the plug housing 1. There are three axially forward-hanging claws 11 evenly distributed on the circumference of the locking sleeve 5. The elastic claws 11 are provided in A U-shaped notch is formed on the outer peripheral surface of the locking sleeve, and a locking block 12 is provided outside the front end of the claw 11 . The inner hole wall of the socket housing 14 is provided with a locking ring groove 20 that is locked and matched with the locking block of the spring claw. When the plug and socket are mated, the locking block 12 is stuck in the locking ring groove 20, and The plug and the socket are locked together to prevent the two from getting loose. In order to separate the plug from the socket, an unlocking sleeve 6 is provided on the outer sliding sleeve of the locking sleeve 5, and a square unlocking hole is arranged on the outer peripheral surface of the unlocking sleeve 6. The locking block 12 can protrude from the unlocking hole and be stuck in the lock. In the tight ring groove 20 , the unlocking sleeve 6 is arranged on the locking sleeve 5 through the nesting relationship between the unlocking hole and the locking block 12 . The face that the locking block 12 cooperates with the front side of the unlocking hole is an inclined plane 13, and the outside of the inclined plane 13 is oblique to the rear side. Like this, when the plug after insertion needs to be separated from the socket, the unlocking sleeve 6 is pulled backward, and the opening of the unlocking hole The front side will push the inclined surface 13 of the lock block 12, so that the claw 11 will be retracted. As the locking sleeve 6 moves backward, when the claw is received to a certain extent, the lock block 12 will be aligned with the locking ring groove. 20, and then the plug can be separated from the socket. The outer peripheral surface of the plug housing 1 is provided with an axially extending axial groove 21 , the front section of the axial groove 21 is deeper and the rear section is shallower, and the axial groove 21 accommodates the claw 11 when retracted.

As an improvement of the above-mentioned technical solution, the plug housing is screwed with an anti-loosening nut 8 on the rear side of the unlocking sleeve. Remove from the plug housing. Anti-loosening nut 8 is positioned at fixed nut 7 rear sides, and when unlocking cover moves backward, fixing nut is positioned at the inner hole of unlocking cover 6.

The retracting space in the above embodiments may also be an annular groove provided on the outer peripheral surface of the plug housing 1 .

In the above embodiment, only one pin is set in the plug insulator, and multiple pins can also be set, each pin is arranged in the plug insulator at intervals, and the front end of each pin is located in the inner hole of the plug insulator and connected to the plug insulator There is a gap between the walls of the inner holes, and a plurality of jacks respectively matching with each pin are arranged in the corresponding socket insulator, and each jack is wrapped in the socket insulator.

There are many fixing ways of the plug insulator in the plug housing and the fixing ways of the pins in the plug insulator, and those skilled in the art can choose in the prior art according to needs; similarly, the fixing way of the socket insulator in the socket housing And there are many ways to fix the jack in the socket insulator, and those skilled in the art can also choose in the prior art according to needs.

Claims (4)

1. high voltage withstanding connector assembly; Comprise the plug and socket that the front end through separately plugs together mutually; Plug comprises plug casing; Socket comprises Socket casing, it is characterized in that: be installed with contact pin through soft pin insulator in the plug casing, the socket insulator through hard in the Socket casing is installed with jack; The gap that has the leading portion insertion that supplies the socket insulator between the endoporus leading portion of pin insulator and the leading portion of contact pin; The hole wall of the endoporus leading portion of pin insulator is the enlarging conical surface forward, and the front portion of socket insulator is coated on the leading portion of jack, the endoporus leading portion of socket insulator and the leading portion snug fit of jack; The outer peripheral face of the front end of socket insulator is the friction tight conical surface that coincide of the hole wall with the endoporus leading portion of pin insulator, has the gap that holds pin insulator and plug casing between the outer peripheral face of socket insulator and the inner hole wall of Socket casing.

2. high voltage withstanding connector assembly according to claim 1; It is characterized in that: the periphery fixed cover of described plug casing is provided with lock sleeve; Upwards has the plural bullet pawl that axially overhangs forward the week of lock sleeve; The arranged outside that plays the pawl front end has lock dog; The hole wall of said Socket casing endoporus is provided with the locking annular groove that cooperates with the lock dog locking that plays pawl, and the outside slip of lock sleeve is arranged with separates lock tube, and the side face of separating lock tube is provided with the square unlock hole that the lock dog of ammunition feed pawl stretches out; The inclined-plane of the face that lock dog cooperates with the leading flank of unlock hole for letting lock dog and unlock hole break away from when behind lock sleeve, moving has the leading flank pushing lock dog of after separating lock tube, transfering from one place to another under escort lockhole and makes in the bullet pawl time receiving hold the interior receipts space that plays pawl between lock sleeve and the plug casing.

3. high voltage withstanding connector assembly according to claim 2 is characterized in that: receiving the space in said is the axial groove that is arranged on the plug casing outer peripheral face.

4. according to claim 2 or 3 described high voltage withstanding connector assemblies, it is characterized in that: be installed with when transfering from one place to another under escort lock after separating lock tube to cooperate in the rear side screw thread of separating lock tube on the described plug casing and prevent to separate the screwed retaining ring that lock tube is taken off on by plug casing with the rear end block of separating lock tube.

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