CN219247075U

CN219247075U - Connector assembly

Info

Publication number: CN219247075U
Application number: CN202320770605.3U
Authority: CN
Inventors: 谢承志; 焦秋兰; 滕芳
Original assignee: Dongguan Synconn Precision Industry Co ltd
Current assignee: Dongguan Synconn Precision Industry Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-06-23
Anticipated expiration: 2033-04-07

Abstract

The utility model relates to the technical field of connectors, in particular to a connector assembly, which comprises a connector shell, a PCB (printed circuit board), a board end connector and a bidirectional connector, wherein the connector shell comprises a placement cavity, a fixed cavity arranged on one side of the placement cavity and a connecting plug arranged on one side of the placement cavity and connected with the fixed cavity, the connecting plug is provided with a plug-in cavity, and one end of the plug-in cavity is communicated with the fixed cavity; the PCB board sets up in settling the intracavity, and board end connector connects in the PCB board, and fixed chamber is located to two-way connector's one end, the other end inserts locates board end connector. The utility model solves the problem of inconvenient matching of the prior board-end connector, and the standard opposite-plug FAK connecting plug is integrated on the connector shell through matching the board-end connector with the bidirectional connector, so that the universality is good.

Description

Connector assembly

Technical Field

The present disclosure relates to the field of connectors, and in particular, to a connector assembly.

Background

Connectors are a component that electronic engineering technicians often contact. The function is as follows: and a bridge for communication is erected between the blocked or isolated circuits in the circuit, so that current flows, and the circuit achieves a preset function. Connectors are an indispensable component in electronic devices, and you always find one or more connectors when looking along the path of current flow. The connector forms and structures are varied, and there are various types of connectors according to the application objects, frequencies, power, application environments, and the like.

The existing connector is widely used in the automobile industry, and comprises chip power supply, video transmission, signal transmission and the like. In use, the video transmission connector generally comprises a board end connector and a straight connector which are matched. The existing connector assembly is easy to cause poor contact phenomenon in plugging use due to different connection structures of cameras of different types, and equipment use is affected.

Disclosure of Invention

In order to solve the problems, the utility model provides a connector assembly which solves the problem of inconvenient matching of the prior board-end connector, integrates a standard opposite-plug FAK connecting plug on a connector shell through matching of a bidirectional connector with the board-end connector, and has good universality.

The technical scheme adopted by the utility model is as follows: the connector assembly comprises a connector shell, a PCB, a board end connector and a bidirectional connector, wherein the connector shell comprises a placement cavity, a fixing cavity arranged on one side of the placement cavity and a connecting plug arranged on one side of the placement cavity and connected with the fixing cavity, the connecting plug is provided with a plug-in cavity, and one end of the plug-in cavity is communicated with the fixing cavity; the PCB is arranged in the placement cavity; the board end connector comprises a plug sleeve, an insulating seat arranged in the plug sleeve and an electric connection element inserted in the insulating seat, wherein the plug sleeve and the electric connection element are connected to a PCB (printed circuit board), the insulating seat is provided with an electric connection fixing groove, a tension avoidance groove is formed in the electric connection fixing groove, one end of the insulating seat is provided with a plug port, one end of the plug port is communicated with the tension avoidance groove, the electric connection element comprises an assembly end, an electric connection end and a conductive contact end, the assembly end is used for being assembled in the electric connection fixing groove, and the conductive contact end is positioned in the tension avoidance groove and faces the plug port; the bidirectional connector comprises an alloy sleeve, an insulator and an electric terminal, wherein the alloy sleeve comprises a first end, a fixed end and a second end which are sequentially arranged; the second end is used for being inserted into the plug-in port, the fixed end is fixed in the fixed cavity, and the first end extends towards the plug-in cavity.

The further improvement of the scheme is that the connecting plug is formed on the connector shell through integrated forming, one end of the connector shell is provided with a connecting outer edge, and the outer edge of the connecting plug is provided with a plugging buckle and a plugging guide bar.

The technical scheme is further improved that the plug sleeve comprises a fixed sleeve, an electric connection pad arranged at the lower end of the fixed sleeve and a tension contact part arranged at the upper end of the fixed sleeve, wherein a fixed clamping groove is formed in the outer diameter of the fixed sleeve; the insulating seat comprises a seat body and a fixed clamping block arranged on the outer diameter of the seat body, and one end of the fixed clamping block is clamped into the fixed clamping groove.

The scheme is further improved in that the fixing sleeve, the electric welding pads and the tension contact part are formed by integrally stamping sheet metal, and the electric welding pads are provided with a plurality of electric welding pads and are uniformly distributed on the lower side of the fixing sleeve in a circumferential direction; the tension contact parts are provided with a plurality of tension contact parts and are uniformly distributed on the upper side of the fixed sleeve in a circumferential direction; the electric welding disk is used for being welded on the PCB; the tension contact part gradually expands from bottom to top; and the top end of the tension contact part is provided with a contact conductive elbow.

The improvement of the scheme is that the fixed clamping blocks are provided with a plurality of annular outer diameters surrounding the seat body, fastening clamping grooves are formed between the fixed clamping blocks and the outer diameters of the seat body, fastening buckles are formed on the inner wall surfaces of the fixing clamping grooves, and the fastening buckles are used for being matched with the fastening clamping grooves.

The technical scheme is further improved in that an inner chamfer and an outer chamfer are arranged at the opening of the plug-in port, the inner chamfer is arranged at the inner diameter of the plug-in port, and the outer chamfer is arranged at the outer diameter of the plug-in port;

the improvement of the scheme is that the outer diameter of the assembly end protrudes outwards to form a close-fit boss, and the close-fit boss is used for being matched in the electricity connection fixing groove.

The technical scheme is further improved that the power connection end comprises a power connection pin and a pin bonding pad, wherein the power connection pin extends towards one side of the power connection end, the pin bonding pad is used for welding the power connection end on a PCB, and the power connection pin is used for connecting the PCB;

according to the technical scheme, the conductive contact end comprises a horn part and a necking part, a through groove is formed in the conductive contact end, the through groove is used for providing tension force for the horn part and the necking part, and the horn part is used for guiding towards the lower necking part when the connector is inserted.

According to the technical scheme, the sealing device is characterized in that a limiting step is arranged in the fixed end, a sealing ring is arranged on the limiting step, and one end of the insulator tightly presses and seals the sealing ring to be abutted to the limiting step.

The technical scheme is further improved in that a positioning step is arranged in the fixed end, the insulator is provided with a positioning ring, and the positioning step and the positioning ring are used for being assembled in the positioning cavity.

The electric terminal comprises a close-fit end, a first conductive end and a second conductive end, wherein the close-fit end is used for being inserted into the slot, the first conductive end penetrates through the sealing ring and extends towards the inserting cavity, and the second conductive end extends towards the opposite inserting cavity; one end of the second conductive end is inserted into the conductive contact end.

The beneficial effects of the utility model are as follows:

compared with the prior connector, the connector shell is used for mounting a PCB, the connector shell is provided with the connecting plug, the board end connector is connected to the PCB, the bidirectional connector is arranged on the connecting plug and is used for connecting the board end connector, the formed switching structure is formed, and in subsequent use, the connector shell is only required to be directly matched with the connecting plug on the connector shell, so that the connector is suitable for converting board end connectors of different types into standard connecting plugs for use, has good universality, is particularly suitable for vehicle-mounted connectors, has good durability and is convenient to plug; the problem of current board end connector complex inconvenient is solved, through two-way connector cooperation board end connector, integrated the FAK connecting plug of standard butt joint on the connector housing, the commonality is good. The connector comprises a connector shell, a PCB, a board end connector and a bidirectional connector, wherein the connector shell comprises a placement cavity, a fixing cavity arranged on one side of the placement cavity and a connecting plug arranged on one side of the placement cavity and connected with the fixing cavity, the connecting plug is provided with a plug-in cavity, and one end of the plug-in cavity is communicated with the fixing cavity; the PCB is arranged in the placement cavity. The structure is suitable for the vehicle-mounted connector, has good structural universality, is convenient to transfer and has good conductive transmission data stability.

The board end connector comprises a plug sleeve, an insulating seat arranged in the plug sleeve and an electric connection element inserted in the insulating seat, wherein the plug sleeve and the electric connection element are connected to a PCB (printed circuit board), the insulating seat is provided with an electric connection fixing groove, a tension avoidance groove is formed in the electric connection fixing groove, one end of the insulating seat is provided with a plug port, one end of the plug port is communicated with the tension avoidance groove, the electric connection element comprises an assembly end, an electric connection end and a conductive contact end, the assembly end is used for being assembled in the electric connection fixing groove, and the conductive contact end is positioned in the tension avoidance groove and faces the plug port; the plug sleeve is matched with the electric connection element for conducting contact of the connector to transmit data, the insulating seat insulates the plug sleeve from the electric connection element, safety is guaranteed, a tension avoidance groove is formed in the insulator, the tension avoidance groove is used for playing a role in tension avoidance when the conducting contact end is plugged, and further stability and precision of contact of the connector during plugging are guaranteed; the problem that the contact is unstable in use of the existing connector is solved, the conductive contact end is arranged in the insulator of the electric connection element, the conductive contact end has tension when being connected with electricity, the tension avoiding effect can be achieved through the tension avoiding groove, and the stability of the connector during plugging is guaranteed.

The bidirectional connector comprises an alloy sleeve, an insulator and an electric terminal, wherein the alloy sleeve comprises a first end, a fixed end and a second end which are sequentially arranged; the second end is used for being inserted into the plug-in port, the fixed end is fixed in the fixed cavity, and the first end extends towards the plug-in cavity. The alloy sleeve is adopted as an external structure, and is matched with an internal electric connection terminal to conduct electric conduction contact together, so that the electric connection is stable and reliable.

Drawings

FIG. 1 is a schematic perspective view of a connector assembly of the present utility model;

FIG. 2 is an exploded view of the connector assembly of FIG. 1;

FIG. 3 is a front view of the connector assembly of FIG. 1;

FIG. 4 is a cross-sectional view of A-A of FIG. 3;

FIG. 5 is an exploded view of the board end connector of the connector assembly of FIG. 1;

FIG. 6 is a cross-sectional view of the board end connector of the connector assembly of FIG. 1;

FIG. 7 is an exploded schematic view of a bi-directional connector of the connector assembly of FIG. 1;

fig. 8 is a cross-sectional view of the bi-directional connector of the connector assembly of fig. 1.

Reference numerals illustrate: the connector comprises a connector shell 1, a placement cavity 11, a fixing cavity 12, a connecting plug 13, a plug-in cavity 131, a plug-in buckle 132, a plug-in guide bar 133, a connecting outer edge 14 and a PCB 2;

the board end connector 3, the plug sleeve 31, the fixing sleeve 311, the fixing clip groove 3111, the fastening clip 3112, the electric welding disk 312, the tension contact portion 313, the insulating base 32, the electric connection fixing groove 321, the tension avoidance groove 322, the plug port 323, the inner chamfer 3231, the outer chamfer 3232, the base 324, the fixing clip block 325, the fastening clip groove 3251, the electric connection element 33, the fitting end 331, the close-fitting boss 3311, the electric connection end 332, the electric connection pin 3321, the pin pad 3322, the conductive contact end 333, the horn portion 3331, the necking portion 3332, and the through groove 3333;

the bidirectional connector 4, the alloy sleeve 41, the first end 411, the fixed end 412, the limiting step 4121, the positioning step 4122, the sealing ring 4123, the second end 413, the insulator 42, the positioning ring 421, the electrical connection terminal 43, the close-fitting end 431, the first conductive end 432, and the second conductive end 433.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

As shown in fig. 1 to 8, in one embodiment of the present utility model, a connector assembly is related to, including a connector housing 1, a pcb board 2, a board end connector 3, and a bidirectional connector 4, where the connector housing 1 includes a placement cavity 11, a fixing cavity 12 disposed at one side of the placement cavity 11, and a connection plug 13 disposed at one side of the placement cavity 11 and connected to the fixing cavity 12, the connection plug 13 is provided with a socket cavity 131, and one end of the socket cavity 131 is communicated with the fixing cavity 12; the PCB 2 is arranged in the arranging cavity 11, the board end connector 3 is connected to the PCB 2, one end of the bidirectional connector 4 is arranged in the fixing cavity 12, and the other end of the bidirectional connector is inserted into the board end connector 3.

The connecting plug 13 is arranged on the connector housing 1 through integrated into one piece, one end of the connector housing 1 is provided with a connecting outer edge 14, the outer edge of the connecting plug 13 is provided with a plugging buckle 132 and a plugging guide strip 133, the integrally formed connector housing 1 is used for being matched with the connecting outer edge 14 for structural connection, the structural connection is stable and reliable, the integration is good, and the connecting plug 13 plays a role in guiding and clamping when being provided with the plugging buckle 132 and the plugging guide strip 133 for being matched and plugged by the connector.

Referring to fig. 5 to 6, the board end connector 3 includes a socket sleeve 31, an insulating seat 32 disposed in the socket sleeve 31, and an electrical connection element 33 inserted in the insulating seat 32, wherein the socket sleeve 31 and the electrical connection element 33 are both connected to the PCB board 2, the socket sleeve 32 is provided with an electrical connection fixing groove 321, a tension avoidance groove 322 is disposed in the electrical connection fixing groove 321, one end of the socket sleeve 32 is provided with a socket port 323, one end of the socket port 323 is communicated with the tension avoidance groove 322, the electrical connection element 33 includes an assembly end 331, an electrical connection end 332, and an electrical connection contact end 333, the assembly end 331 is configured to be assembled in the electrical connection fixing groove 321, and the electrical connection contact end 333 is disposed in the tension avoidance groove 322 and faces the socket port 323; the socket sleeve 31 is matched with the electric connection element 33 for conducting contact of the connector to transmit data, the insulating seat 32 insulates the socket sleeve 31 from the electric connection element 33, safety is guaranteed, a tension avoidance groove 322 is formed in the insulator, the tension avoidance groove 322 is used for playing a role in tension avoidance when the conducting contact end 333 is plugged, and further stability and precision of contact of the connector during plugging are guaranteed; the problem that the contact is unstable in use of the existing connector is solved, the conductive contact end 333 is arranged in the insulator of the electric connection element 33, the conductive contact end 333 has tension when being connected with electricity, the tension avoiding effect can be achieved through the tension avoiding groove 322, and the stability of the connector during plugging is ensured.

The plug sleeve 31 comprises a fixed sleeve 311, an electric connection pad 312 arranged at the lower end of the fixed sleeve 311 and a tension contact part 313 arranged at the upper end of the fixed sleeve 311, wherein a fixed clamping groove 3111 is formed at the outer diameter of the fixed sleeve 311; the insulation base 32 comprises a base 324 and a fixing clamping block 325 arranged on the outer diameter of the base 324, one end of the fixing clamping block 325 is clamped into the fixing clamping groove 3111, the fixing sleeve 311 is used for structural connection and assembly, the tension contact portion 313 is used for being matched with the inner diameter contact of the second end to conduct electricity, and the fixing sleeve 311 is stably connected with the insulation base 32 under the matching of the fixing clamping block 325 and the fixing clamping groove 3111.

The fixing sleeve 311, the electric welding pads 312 and the tension contact portion 313 are integrally formed by stamping sheet metal, and the electric welding pads 312 are provided with a plurality of electric welding pads and are uniformly distributed on the lower side of the fixing sleeve 311 in a circumferential direction; the tension contact parts 313 are provided with a plurality of tension contact parts and are uniformly distributed on the upper side of the fixed sleeve 311 in a circumferential direction; the power connection pad 312 is used for being welded on the PCB 2; the tension contact portion 313 gradually expands from bottom to top; the top of the tension contact portion 313 is provided with a contact conductive elbow, in this embodiment, a plurality of connection structures are adopted to cooperate, the structural integrity is good, the connection is stable and reliable, and the structure of the tension contact portion 313 is convenient to ensure the abutting conductive stability during the plugging process.

The fixed fixture block 325 is provided with a plurality of, and is the external diameter that the hoop centers on the pedestal 324, fastening draw-in groove 3251 has been seted up between the external diameter of fixed fixture block 325 and pedestal 324, fastening buckle 3112 has been seted up to the internal face of fixed draw-in groove 3111, fastening buckle 3112 is used for cooperating fastening draw-in groove 3251, under through fastening draw-in groove 3251 and fastening buckle 3112 cooperation, further guarantees the stability of fixed strip and fixed cover 311, and both are connected stably.

An inner chamfer 3231 and an outer chamfer 3232 are arranged at the opening of the plug port 323, the inner chamfer 3231 is arranged at the inner diameter of the plug port 323, and the outer chamfer 3232 is arranged at the outer diameter of the plug port 323; the chamfering is convenient for guiding the connector during insertion, and the outer chamfer 3232 can also be used for opening and closing the tension abutting part.

The outer diameter of the assembling end 331 protrudes outwards to form a close-fitting boss 3311, the close-fitting boss 3311 is used for being matched in the electricity receiving fixing groove 321, and the close-fitting boss 3311 is used for enhancing assembling stability of the assembling end 331.

The electrical connection terminal 332 includes an electrical connection pin 3321 and a pin pad 3322, the electrical connection pin 3321 extends toward one side of the electrical connection terminal 332, the pin pad 3322 is used for soldering the electrical connection terminal 332 on the PCB 2, and the electrical connection pin 3321 is used for connecting the PCB 2.

The conductive contact terminal 333 includes a flare portion 3331 and a neck portion 3332, the conductive contact terminal 333 is provided with a through slot 3333, the through slot 3333 is used for providing tension force to the flare portion 3331 and the neck portion 3332, and the flare portion 3331 is used for guiding toward the neck portion 3332 when the connector is inserted.

Referring to fig. 7 to 8, the bidirectional connector 4 includes an alloy sleeve 41, an insulator 42, and a power connection terminal 43, wherein the alloy sleeve 41 includes a first end 411, a fixed end 412, and a second end 413 sequentially disposed; the second end 413 is configured to be inserted into the plugging port 323, the fixed end 412 is fixed in the fixed cavity 12, and the first end 411 extends toward the plugging cavity 131. The alloy sleeve 41 is adopted as an external structure, and is matched with the internal electric connection terminal 43 to conduct electric conduction contact together, so that the electric connection is stable and reliable.

The fixed end 412 is internally provided with a limiting step 4121, a sealing ring 4123 is installed on the limiting step 4121, one end of the insulator 42 presses and seals the sealing ring 4123 to be abutted on the limiting step 4121, and the limiting step 4121 is matched with the sealing ring 4123 to form a sealing structure inside and play a sealing protection role on the board end connector 3 and the PCB 2 which are connected inside.

The fixed end 412 is internally provided with a positioning step 4122, the insulator 42 is provided with a positioning ring 421, the positioning step 4122 and the positioning ring 421 are used for being assembled in the positioning cavity, and the positioning step 4122 and the positioning ring 421 are used for structure assembly and positioning, so that the precision and stability of structure assembly are enhanced.

The insulator 42 is internally provided with a slot, the electric terminal 43 comprises a close-fit end 431, a first conductive end 432 and a second conductive end 433, the close-fit end 431 is used for being inserted into the slot, the first conductive end 432 penetrates through the sealing ring 4123 and extends towards the inserting cavity 131, and the second conductive end 433 extends towards the opposite inserting cavity; one end of the second conductive terminal 433 is inserted into the conductive contact terminal 333.

The utility model sets the connector shell 1 as the installation of the PCB 2, and sets the connecting plug 13 on the connector shell 1, and then connects the board end connector 3 on the PCB 2, the two-way connector 4 is installed on the connecting plug 13 for connecting the board end connector 3, the formed switching structure is only needed to directly match the connecting plug 13 on the connector shell 1 in subsequent use, the utility model is suitable for converting the board end connector 3 with different types into the standard connecting plug 13 for use, has good universality, is especially suitable for vehicle-mounted connectors, has good durability and is convenient for grafting; the problem of current board end connector 3 complex inconvenient is solved, through two-way connector 4 cooperation board end connector 3, integrated standard to FAK connecting plug 13 of inserting on the connector housing 1, the commonality is good. Specifically, a connector housing 1, a pcb 2, a board end connector 3 and a bidirectional connector 4 are provided, wherein the connector housing 1 comprises a placement cavity 11, a fixing cavity 12 arranged on one side of the placement cavity 11, and a connection plug 13 arranged on one side of the placement cavity 11 and connected with the fixing cavity 12, the connection plug 13 is provided with a plug cavity 131, and one end of the plug cavity 131 is communicated with the fixing cavity 12; the PCB board 2 is arranged in the placement cavity 11. The structure is suitable for the vehicle-mounted connector, has good structural universality, is convenient to transfer and has good conductive transmission data stability.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A connector assembly, characterized in that: comprising

The connector comprises a connector shell, a connecting plug and a connecting rod, wherein the connector shell comprises a placement cavity, a fixing cavity arranged on one side of the placement cavity and a connecting plug arranged on one side of the placement cavity and connected with the fixing cavity;

the PCB is arranged in the placement cavity;

the board end connector comprises a plug sleeve, an insulating seat arranged in the plug sleeve and an electric connection element inserted in the insulating seat, wherein the plug sleeve and the electric connection element are both connected to a PCB (printed circuit board), the insulating seat is provided with an electric connection fixing groove, a tension avoidance groove is formed in the electric connection fixing groove, one end of the insulating seat is provided with a plug port, one end of the plug port is communicated with the tension avoidance groove, the electric connection element comprises an assembly end, an electric connection end and a conductive contact end, the assembly end is used for being assembled in the electric connection fixing groove, and the conductive contact end is positioned in the tension avoidance groove and faces the plug port;

the bidirectional connector comprises an alloy sleeve, an insulator and an electric terminal, wherein the alloy sleeve comprises a first end, a fixed end and a second end which are sequentially arranged; the second end is used for being inserted into the plug-in port, the fixed end is fixed in the fixed cavity, and the first end extends towards the plug-in cavity.

2. The connector assembly of claim 1, wherein: the connecting plug is formed on the connector shell through integral forming, one end of the connector shell is provided with a connecting outer edge, and the outer edge of the connecting plug is provided with a plugging buckle and a plugging guide bar.

3. The connector assembly of claim 1, wherein: the plug sleeve comprises a fixed sleeve, an electric connection welding disc arranged at the lower end of the fixed sleeve and a tension contact part arranged at the upper end of the fixed sleeve, and a fixed clamping groove is formed in the outer diameter of the fixed sleeve; the insulating seat comprises a seat body and a fixed clamping block arranged on the outer diameter of the seat body, and one end of the fixed clamping block is clamped into the fixed clamping groove.

4. A connector assembly according to claim 3, wherein: the fixing sleeve, the electric welding pads and the tension contact part are integrally formed by stamping sheet metal, and the electric welding pads are provided with a plurality of electric welding pads and are uniformly distributed on the lower side of the fixing sleeve in a circumferential direction; the tension contact parts are provided with a plurality of tension contact parts and are uniformly distributed on the upper side of the fixed sleeve in a circumferential direction; the electric welding disk is used for being welded on the PCB; the tension contact part gradually expands from bottom to top; and the top end of the tension contact part is provided with a contact conductive elbow.

5. The connector assembly of claim 4, wherein: the fixing clamping blocks are provided with a plurality of fixing clamping blocks and surround the outer diameter of the seat body in a circumferential direction, fastening clamping grooves are formed between the fixing clamping blocks and the outer diameter of the seat body, fastening buckles are formed in the inner wall surfaces of the fixing clamping grooves, and the fastening buckles are used for being matched with the fastening clamping grooves.

6. The connector assembly of claim 5, wherein: an inner chamfer and an outer chamfer are arranged at the opening of the plug-in port, the inner chamfer is arranged at the inner diameter of the plug-in port, and the outer chamfer is arranged at the outer diameter of the plug-in port;

the outer diameter of the assembly end protrudes outwards to form a close-fitting boss, and the close-fitting boss is used for being matched in the electricity connection fixing groove.

7. The connector assembly of claim 6, wherein: the power connection terminal comprises a power connection pin and a pin bonding pad, wherein the power connection pin extends towards one side of the power connection terminal, the pin bonding pad is used for welding the power connection terminal on the PCB, and the power connection pin is used for connecting the PCB;

the conductive contact end comprises a horn part and a necking part, a through groove is formed in the conductive contact end, the through groove is used for providing tension force for the horn part and the necking part, and the horn part is used for guiding towards the lower necking part when the connector is inserted.

8. The connector assembly of claim 1, wherein: the fixed end is internally provided with a limiting step, a sealing ring is arranged on the limiting step, and one end of the insulator tightly presses and seals the sealing ring to be abutted on the limiting step.

9. The connector assembly of claim 1, wherein: the fixed end is internally provided with a positioning step, the insulator is provided with a positioning ring, and the positioning step and the positioning ring are used for being assembled in the positioning cavity.

10. The connector assembly of claim 1, wherein: the insulator is internally provided with a slot, the electric terminal comprises a close-fit end, a first conductive end and a second conductive end, the close-fit end is used for being inserted into the slot, the first conductive end penetrates through the sealing ring and extends towards the inserting cavity, and the second conductive end extends towards the opposite inserting cavity; one end of the second conductive end is inserted into the conductive contact end.