CN117199883A - Flange connector and connector - Google Patents

Abstract

The invention discloses a flange connector and a connector. The flange connector includes: a tray for mounting on a first housing of a first device; and a connection body convexly formed on a surface of the tray body for being inserted into a mounting hole on a second housing of the second device. A shielding connecting piece locating surface for locating a shielding connecting piece is formed on the outer side of the connecting body, a sealing ring locating groove for installing a sealing ring is formed on the flange connecting piece, and the sealing ring locating groove is closer to the disc body than the shielding connecting piece locating surface; the sealing ring mounted on the flange connector seals the shield connector mounted on the connector in the second housing of the second device when the connector is inserted into the mounting hole. The shielding connector is sealed in the shell, cannot be influenced by external moisture, improves the electromagnetic shielding effect of the connector and prolongs the service life of the connector.

Description

Flange connector and connector

Technical Field

The present invention relates to a flange connector and a connector including the same.

Background

In the prior art, in order to realize the electrical connection between the three-phase alternating current motor and the motor control unit, a first electrical connection interface is required to be arranged on the casing of the three-phase alternating current motor, a second electrical connection interface is arranged on the casing of the motor control unit, and a cable assembly is used for being electrically connected between the first electrical connection interface and the second electrical connection interface. Generally, a cable assembly includes a cable and first and second connectors connected to both ends of the cable, respectively. The first connector and the second connector of the cable assembly are respectively inserted into the first electric connection interface and the second electric connection interface.

The existing electric connection scheme between the three-phase alternating current motor and the motor control unit has the problem of complex structure. In addition, in the prior art, electromagnetic shielding connectors are required to be arranged for the first connector and the second connector respectively, and the electromagnetic shielding connectors are usually positioned outside the three-phase alternating current motor and the motor control unit, so that the electromagnetic shielding effect and the service life of the first connector and the second connector are reduced due to the influence of external moisture.

Disclosure of Invention

The present invention is directed to solving at least one of the above-mentioned problems and disadvantages of the prior art.

According to one aspect of the present invention, a flange connection is provided for connection between a first housing of a first device and a second housing of a second device. The flange connector includes: a tray for mounting on a first housing of a first device; and a connection body convexly formed on a surface of the tray body for being inserted into a mounting hole on a second housing of the second device. A shielding connecting piece locating surface for locating a shielding connecting piece is formed on the outer side of the connecting body, a sealing ring locating groove for installing a sealing ring is formed on the flange connecting piece, and the sealing ring locating groove is closer to the disc body than the shielding connecting piece locating surface; the sealing ring mounted on the flange connector seals the shield connector mounted on the connector in the second housing of the second device when the connector is inserted into the mounting hole.

According to an exemplary embodiment of the invention, the tray has opposite first and second surfaces; the first surface of the tray is in electrical contact with the first housing when the tray is mounted to the first housing; the connector is protrusively formed on the second surface of the disk body and is electrically connectable with the second housing via a shield connector mounted on the connector.

According to another exemplary embodiment of the present invention, a protruding positioning ring is formed on the outer circumferential surface of the connection body, and the shielding connection piece positioning surface is formed on a side of the positioning ring facing away from the seal ring positioning groove and perpendicular to the outer circumferential surface of the connection body.

According to another exemplary embodiment of the present invention, the seal ring positioning groove is disposed at a circumferential outer side of the connection body.

According to another exemplary embodiment of the present invention, the seal ring positioning groove is provided on the second surface of the disc body.

According to another exemplary embodiment of the present invention, the disc body is for being mounted to the mounting opening of the first housing, and an annular groove is formed on the first surface of the disc body for mounting a seal ring to seal the mounting opening of the first housing.

According to another exemplary embodiment of the present invention, a through hole for disposing an insulator is formed in the flange connector to penetrate the connector and the disc body in an axial direction of the connector.

According to another exemplary embodiment of the present invention, the flange connector has a plurality of the connection bodies and a plurality of the through holes penetrating the plurality of connection bodies, respectively; the annular groove surrounds openings of the plurality of through holes on the first surface of the disk body so as to be capable of simultaneously sealing the openings of the plurality of through holes on the first surface of the disk body by a seal ring mounted in the annular groove.

According to another exemplary embodiment of the present invention, the first surface of the tray body has a recess formed thereon for mating with an insulator; the recess communicates with the annular groove and the plurality of through holes.

According to another aspect of the present invention, there is provided a connector comprising: the flange connector; and the insulator is fixedly arranged in a through hole penetrating through the connecting body and the disc body and used for installing the connecting terminal.

According to an exemplary embodiment of the present invention, the connector further comprises: the sealing ring is arranged on the connecting body and positioned in the sealing ring positioning groove; and the shielding connector is arranged on the connector body, and one side of the shielding connector abuts against the positioning surface of the shielding connector. The tray body is in electrical contact with the first housing when the tray body is mounted to the first housing, and the shield connector is sealed in the mounting hole by the seal ring and is in electrical contact with the second housing when the connector is inserted into the mounting hole on the second housing.

According to another exemplary embodiment of the present invention, the shield connection is an axially compressible wave spring ring, which is axially compressed between the shield connection positioning surface and a positioning step surface in the mounting hole of the second housing to electrically connect the flange connection and the second housing when the connection body is inserted into the mounting hole.

According to another exemplary embodiment of the present invention, the connector further comprises: and a connection terminal provided in the insulator for electrically connecting the first conductor in the first device and the second conductor in the second device. The connecting terminals comprise a first connecting end and a second connecting end which are respectively positioned at two sides of the flange connecting piece and are exposed out of the insulator; the first connection end and the second connection end of the connection terminal are used for electrically connecting the first conductor and the second conductor respectively.

According to another exemplary embodiment of the invention, a first connection nut is provided on the first connection end, which first connection end is adapted to be electrically connected to the first conductor via the first connection nut; and/or a second connection nut is provided on the second connection end, the second connection end being adapted to be electrically connected to the second conductor via the second connection nut.

According to another exemplary embodiment of the present invention, a potting compound cavity is formed on an end surface of the insulator, and the connection terminal passes through the potting compound cavity and is filled with a sealing compound in the potting compound cavity to seal a gap between the insulator and the connection terminal.

According to another exemplary embodiment of the present invention, the insulator includes a first end and a second end located at both sides of the flange connection, respectively, and the glue-pouring cavity is formed on an end surface of the first end and/or the second end of the insulator.

According to another exemplary embodiment of the present invention, the tray body has opposite first and second surfaces, and the connection body is convexly formed on the second surface of the tray body; an annular groove is formed on the first surface of the disk body, and the connector further includes a seal ring mounted in the annular groove for sealing the mounting opening on the first housing.

According to another exemplary embodiment of the invention, the annular groove extends radially to the insulator and is arranged around the insulator, and the sealing ring is arranged in a sealing manner at the interface of the disc body and the insulator.

According to another exemplary embodiment of the present invention, the insulator is an integral injection molded part formed between the flange connection and the terminal by insert injection molding; and when the insulator is injection molded, the flange connector and the terminal are embedded parts, and the insulator is an integral injection molded part which is simultaneously jointed with the flange connector and the terminal.

In the foregoing various exemplary embodiments according to this invention, the connector of this invention is capable of directly electrically connecting a first device and a second device, simplifying the electrical connection between the first device and the second device. Moreover, the shielding connector is sealed in the shell, is not influenced by external moisture, improves the electromagnetic shielding effect of the connector and prolongs the service life of the connector.

Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, which provide a thorough understanding of the present invention.

Drawings

Fig. 1 shows a schematic perspective view of a connector according to an exemplary embodiment of the invention, as seen from one side;

fig. 2 shows a perspective view of a connector according to an exemplary embodiment of the present invention, as seen from the other side;

FIG. 3 shows a cross-sectional view of a connector along the axial direction of a connector body according to an exemplary embodiment of the present invention;

fig. 4 shows a schematic perspective view of a flange connector, an insulator and a connection terminal of a connector according to an exemplary embodiment of the present invention;

fig. 5 shows a schematic perspective view of a flange connection and a shield connection of a connector according to an exemplary embodiment of the invention;

FIG. 6 shows a schematic perspective view of a flange connection of a connector according to an exemplary embodiment of the invention;

fig. 7 shows a schematic perspective view of a shield connection of a connector according to an exemplary embodiment of the invention.

Detailed Description

The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of embodiments of the present invention with reference to the accompanying drawings is intended to illustrate the general inventive concept and should not be taken as limiting the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in the drawings in order to simplify the drawings.

According to one general technical concept of the present invention, there is provided a flange connector for connecting between a first housing of a first apparatus and a second housing of a second apparatus. The flange connector includes: a tray 11 for mounting on a first housing of a first apparatus; and a connection body 12 protrusively formed on a surface of the tray body 11 for being inserted into a mounting hole on a second housing of the second apparatus. A shielding connector positioning surface 122a for positioning the shielding connector 4 is formed on the outer side of the connector 12, a sealing ring positioning groove 121 for mounting the sealing ring 5 is formed on the flange connector, and the sealing ring positioning groove 121 is closer to the disc 11 than the shielding connector positioning surface 122 a; the sealing ring 5 mounted on the flange connector seals the shield connector 4 mounted on the connector 12 in the second housing of the second device when the connector 12 is inserted into the mounting hole.

According to another general technical concept of the present invention, there is provided a connector including: the flange connector 1; and an insulator 2 fixedly provided in a through hole 101 penetrating the connector 12 and the tray 11 for mounting the connection terminal 3.

Fig. 1 shows a schematic perspective view of a connector according to an exemplary embodiment of the invention, as seen from one side; fig. 2 shows a perspective view of a connector according to an exemplary embodiment of the present invention, as seen from the other side; fig. 3 shows a cross-sectional view of a connector according to an exemplary embodiment of the present invention along the axial direction of a connector body.

As shown in fig. 1 to 3, in the illustrated embodiment, the connector mainly comprises a flange connection 1, an insulator 2, a connection terminal 3, a shield connection 4 and a sealing ring 5. The connection terminals 3 are used for electrically connecting conductors in the first device and the second device, and the shield connection 4 is used as an electromagnetic shield connection for electrically connecting the flange connection 1 and the second housing of the second device.

Fig. 4 shows a schematic perspective view of a flange connector 1, an insulator 2 and a connection terminal 3 of a connector according to an exemplary embodiment of the present invention; fig. 5 shows a schematic perspective view of a flange connection 1 and a shield connection 4 of a connector according to an exemplary embodiment of the invention; fig. 6 shows a schematic perspective view of a flange connection 1 of a connector according to an exemplary embodiment of the invention; fig. 7 shows a schematic perspective view of a shielding connection 4 of a connector according to an exemplary embodiment of the invention.

As shown in fig. 1 to 7, in the illustrated embodiment, the flange connection 1 comprises: a tray 11 and a connector 12. The tray 11 is for mounting on a first housing of a first device (not shown). The connector 12 is formed protrusively on a surface (second surface 11 b) of the tray 11 for insertion into a mounting hole on a second housing of a second apparatus (not shown).

As shown in fig. 1 to 7, in the illustrated embodiment, a seal ring positioning groove 121 for positioning the seal ring 5 and a shield connector positioning surface 122a for positioning the shield connector 4 are formed on the outside of the connector 12. The seal ring positioning groove 121 is closer to the disk 11 than the shield connector positioning surface 122a, so that the shield connector 4 mounted on the connector 12 is sealed in the mounting hole by the seal ring 5 mounted on the connector 12 when the connector 12 is inserted into the mounting hole. Therefore, the shield connector 4 is not affected by external moisture, improving the electromagnetic shielding effect of the connector and prolonging the service life of the connector.

As shown in fig. 1-7, in the illustrated embodiment, the tray 11 has opposed first and second surfaces 11a, 11b. When the tray 11 is mounted to the first housing, the first surface 11a of the tray 11 is in electrical contact with the first housing. The connector 12 is protrusively formed on the second surface 11b of the tray 11 and can be electrically connected with the second housing via the shield connector 4 mounted on the connector 12.

As shown in fig. 1 to 7, in the illustrated embodiment, the connecting body 12 is cylindrical. The seal ring positioning groove 121 is provided on the circumferential outer side of the connecting body 12. However, the present invention is not limited to the illustrated embodiment, and for example, the seal ring positioning groove 121 may be provided on the second surface 11b of the disc 11.

As shown in fig. 1 to 7, in the illustrated embodiment, a convex positioning ring 122 is formed on the outer peripheral surface of the connection body 12, and a shield connection positioning surface 122a is formed on a side of the positioning ring 122 facing away from the seal ring positioning groove 121 and perpendicular to the outer peripheral surface of the connection body 12. In the illustrated embodiment, the retaining ring 122 axially separates the shield connection 4 and the seal ring 5 mounted on the connection body 12 by a predetermined distance.

As shown in fig. 1 to 7, in the illustrated embodiment, the tray 11 is for mounting to a mounting port (not shown) of the first housing. An annular groove 116 is formed on the first surface 11a of the disk 11. The annular groove 116 is used to mount the seal ring 6 to seal the mounting opening in the first housing.

As shown in fig. 1 to 7, in the illustrated embodiment, a through hole 101 for disposing the insulator 2 is formed in the flange connector 1 penetrating the connector 12 and the disk 11 in the axial direction of the connector 12.

As shown in fig. 1 to 7, in the illustrated embodiment, a recess 11c is formed on the first surface 11a of the tray 11 for cooperation with the insulator 2. As shown in fig. 3 and 7, the recess 11c communicates with the annular groove 116 and the plurality of through holes 101. The annular groove 116 extends radially to the insulator 2 and is disposed around the insulator 2. The seal ring 6 is arranged at the junction of the disc 11 and the insulator 2 in a sealing manner.

As shown in fig. 1 to 7, in the illustrated embodiment, the flange connector 1 has a plurality of connection bodies 12 and a plurality of through holes 101 penetrating the plurality of connection bodies 12, respectively. The annular groove 116 surrounds the openings of the plurality of through holes 101 on the first surface 11a of the disk 11 so that the openings of the plurality of through holes 101 on the first surface 11a of the disk 11 can be simultaneously sealed by the seal ring 6 mounted in the annular groove 116.

As shown in fig. 1 to 7, in the illustrated embodiment, the flange connector 1 has three connection bodies 12 and three through holes 101 penetrating the three connection bodies 12, respectively. The connector has three insulators 2 provided in the three through holes 101, respectively, and three connection terminals 3 provided in the three insulators 2, respectively.

As shown in fig. 1 to 7, in the illustrated embodiment, a coupling hole 111 is formed at a corner of the tray 11, and the tray 11 can be fastened to the first housing by a coupling member (e.g., a bolt) passing through the coupling hole 111.

As shown in fig. 1 to 7, in the illustrated embodiment, a positioning hole (not shown) for mounting the positioning pin 112 is formed on the first surface 11a of the tray 11, so that the tray 11 can be pre-positioned onto the first housing by the positioning pin 112 mounted in the positioning hole. In the illustrated embodiment, the locating holes in the tray 11 may be blind holes that do not extend through the tray 11.

As shown in fig. 1 to 7, in the illustrated embodiment, the seal ring 5 is mounted on the connection body 12 of the flange connection 1 and is positioned in a seal ring positioning groove 121 on the connection body 12. The shield connection 4 is mounted on the connection body 12 of the flange connection 1 with one side thereof abutting against the shield connection positioning surface 122a. When the tray 11 is mounted to the first housing, the tray 11 is in electrical contact with the first housing. When the connector 12 is inserted into the mounting hole on the second housing, the shield connector 4 is sealed in the mounting hole by the seal ring 5 and is in electrical contact with the second housing. Thus, the shield connection 4 can achieve an electrical connection between the flange connection 1 and the second housing.

As shown in fig. 1 to 7, in the illustrated embodiment the shielding connection 4 is a wave spring ring which can be compressed axially. When the connector 12 is inserted into the mounting hole, the shield connector 4 is axially compressed between the shield connector positioning surface 122a and a positioning step surface (not shown) in the mounting hole of the second housing to electrically connect the flange connector 1 and the second housing.

As shown in fig. 1 to 7, in the illustrated embodiment, the insulator 2 is provided in a through hole 101 penetrating the connection body 12 and the tray 11. A connection terminal 3 is provided in the insulator 2 for electrically connecting a first conductor (e.g., a first wire) in the first device and a second conductor (e.g., a second wire) in the second device.

As shown in fig. 1 to 7, in the illustrated embodiment, the connection terminal 3 includes a first connection end 31 and a second connection end 32, which are respectively located at both sides of the flange connector 1 and exposed from the insulator 2. The first connection end 31 and the second connection end 32 of the connection terminal 3 are for electrically connecting the first conductor and the second conductor, respectively.

As shown in fig. 1 to 7, in the illustrated embodiment, a first connection nut 3a is provided on the first connection end 31, the first connection end 31 being adapted to be electrically connected to the first conductor via the first connection nut 3 a. Similarly, in the illustrated embodiment, a second connection nut 3b is provided on the second connection end 32, the second connection end 32 being adapted to be electrically connected to the second conductor via the second connection nut 3 b. However, the present invention is not limited to the illustrated embodiment, and for example, the first connection end 31 and the second connection end 32 of the connection terminal 3 may be welded or crimped to the first conductor and the second conductor, respectively.

As shown in fig. 1 to 7, in the illustrated embodiment, a potting compound cavity 211 is formed on an end face of the insulator 2, and the connection terminal 3 passes through the potting compound cavity 211 and is filled with a sealing compound 7 in the potting compound cavity 211 to seal a gap between the insulator 2 and the connection terminal 3.

As shown in fig. 1 to 7, in the illustrated embodiment, the insulator 2 includes a first end 21 and a second end 22 located at both sides of the flange connector 1, respectively, and a glue-pouring cavity 211 is formed on an end surface of the first end 21 and/or the second end 22 of the insulator 2.

As shown in fig. 1 to 7, in the illustrated embodiment, the connector further comprises a sealing ring 6 mounted in the annular groove 116, the sealing ring 6 being for sealing the mounting opening on the first housing. Further, in the illustrated embodiment, the seal ring 6 surrounds the openings of the plurality of through holes 101 on the first surface 11a of the tray body 11 to simultaneously seal the openings of the plurality of through holes 101 on the first surface 11a of the tray body 11 by the seal ring 6.

As shown in fig. 1-7, in the illustrated embodiment, the connector further includes a locating pin 112, the locating pin 112 being mounted in a locating hole on the first surface 11a of the tray 11. The locating pin 112 is adapted to mate with a locating hole in the first housing such that the tray 11 can be pre-positioned onto the first housing by the locating pin 112.

As shown in fig. 1 to 7, in the illustrated embodiment, the insulator 2 is an integral injection-molded part formed between the flange connector 1 and the terminal 3 by insert injection molding. When the insulator 2 is injection molded, the flange connector 1 and the terminal 3 are embedded parts, and the insulator 2 is an integral injection molded part which is simultaneously joined with the flange connector 1 and the terminal 3.

As shown in fig. 1-7, in the illustrated embodiment, the first device may be a motor, for example, a dc motor or a three-phase ac motor. The second device may be a motor control means for controlling the motor. The connection terminals 3 of the connector are used to electrically connect wires in the motor to wires in the motor control device. The flange connection 1 and the shield connection 4 of the connector are used for electrically connecting the housing of the motor to the housing of the motor control device.

It will be appreciated by those skilled in the art that the above-described embodiments are exemplary and that modifications may be made to the embodiments described in various embodiments without structural or conceptual aspects and that these variations may be resorted to without departing from the scope of the invention.

Although the present invention has been described with reference to the accompanying drawings, the examples disclosed in the drawings are intended to illustrate preferred embodiments of the invention and are not to be construed as limiting the invention.

Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and that the word "a" or "an" does not exclude a plurality. In addition, any element numbers of the claims should not be construed as limiting the scope of the invention.

Claims (19)

1. A flange connector for connection between a first housing of a first device and a second housing of a second device, the flange connector comprising:

a tray for mounting on a first housing of a first device; and

a connection body convexly formed on a surface of the tray body for being inserted into a mounting hole on a second housing of the second device,

a shielding connecting piece locating surface for locating the shielding connecting piece is formed on the outer side of the connecting body, a sealing ring locating groove for installing a sealing ring is formed on the flange connecting piece, the sealing ring locating groove is closer to the disc body than the shielding connecting piece locating surface,

the sealing ring mounted on the flange connector seals the shield connector mounted on the connector in the second housing of the second device when the connector is inserted into the mounting hole.

2. A flanged connection according to claim 1, wherein:

the tray body is provided with a first surface and a second surface which are opposite;

the first surface of the tray is in electrical contact with the first housing when the tray is mounted to the first housing;

the connector is protrusively formed on the second surface of the disk body and is electrically connectable with the second housing via a shield connector mounted on the connector.

3. A flanged connection according to claim 2, wherein:

a convex positioning ring is formed on the outer peripheral surface of the connector, and the shielding connector positioning surface is formed on one side of the positioning ring, which is opposite to the sealing ring positioning groove, and is perpendicular to the outer peripheral surface of the connector.

4. A flanged connection according to claim 3, wherein:

the sealing ring positioning groove is arranged on the circumferential outer side of the connecting body.

5. A flanged connection according to claim 3, wherein:

the sealing ring positioning groove is arranged on the second surface of the disc body.

6. A flanged connection according to claim 2, wherein:

the disc body is used for being mounted on the mounting opening of the first shell, an annular groove is formed on the first surface of the disc body, and the annular groove is used for being mounted with a sealing ring so as to seal the mounting opening of the first shell.

7. A flanged connection according to claim 6, wherein:

and a through hole which penetrates through the connecting body and the disc body along the axial direction of the connecting body and is used for arranging an insulator is formed on the flange connecting piece.

8. The flange connection of claim 7, wherein:

the flange connector is provided with a plurality of connectors and a plurality of through holes penetrating through the connectors respectively;

the annular groove surrounds openings of the plurality of through holes on the first surface of the disk body so as to be capable of simultaneously sealing the openings of the plurality of through holes on the first surface of the disk body by a seal ring mounted in the annular groove.

9. A flanged connection according to claim 8, wherein:

a concave part is formed on the first surface of the tray body and is used for being matched with the insulator;

the recess communicates with the annular groove and the plurality of through holes.

10. A connector, comprising:

the flange connector of any one of claims 1-9; and

and the insulator is fixedly arranged in a through hole penetrating through the connecting body and the tray body and used for installing the connecting terminal.

11. The connector of claim 10, further comprising:

the sealing ring is arranged on the connecting body and positioned in the sealing ring positioning groove; and

a shielding connecting piece which is arranged on the connecting body and one side of which is propped against the positioning surface of the shielding connecting piece,

when the tray is mounted to the first housing, the tray is in electrical contact with the first housing,

when the connector is inserted into a mounting hole on the second housing, the shield connector is sealed in the mounting hole by the seal ring and is in electrical contact with the second housing.

12. The connector of claim 11, wherein:

the shielding connector is a wavy spring ring capable of being compressed axially, and when the connector is inserted into the mounting hole, the shielding connector is compressed axially between the positioning surface of the shielding connector and the positioning step surface in the mounting hole of the second shell so as to electrically connect the flange connector and the second shell.

13. The connector of claim 10, further comprising:

a connection terminal provided in the insulator for electrically connecting a first conductor in the first device and a second conductor in the second device;

the connecting terminals comprise a first connecting end and a second connecting end which are respectively positioned at two sides of the flange connecting piece and are exposed out of the insulator;

the first connection end and the second connection end of the connection terminal are used for electrically connecting the first conductor and the second conductor respectively.

14. The connector of claim 13, wherein:

providing a first connection nut on the first connection end, the first connection end being adapted to be electrically connected to the first conductor via the first connection nut; and/or

A second connection nut is provided on the second connection end, the second connection end being adapted to be electrically connected to the second conductor via the second connection nut.

15. The connector of claim 13, wherein:

and a glue filling cavity is formed on the end face of the insulator, and the connecting terminal penetrates through the glue filling cavity and is filled with sealant so as to seal a gap between the insulator and the connecting terminal.

16. The connector of claim 15, wherein:

the insulator comprises a first end and a second end which are respectively positioned at two sides of the flange connecting piece, and the glue filling cavity is formed on the end face of the first end and/or the second end of the insulator.

17. The connector of claim 13, wherein:

the tray body is provided with a first surface and a second surface which are opposite, and the connecting body is convexly formed on the second surface of the tray body;

an annular groove is formed on the first surface of the disk body,

the connector further includes a seal ring mounted in the annular groove for sealing a mounting opening on the first housing.

18. The connector of claim 17, wherein:

the annular groove extends radially to the insulator and is disposed around the insulator,

the sealing ring is arranged at the junction of the disc body and the insulator in a sealing way.

19. A connector as claimed in any one of claims 13 to 18, wherein:

the insulator is an integral injection molding piece formed between the flange connector and the terminal in an embedded injection molding mode; and is also provided with

When the insulator is injection molded, the flange connector and the terminal are embedded parts, and the insulator is an integral injection molded part which is simultaneously jointed with the flange connector and the terminal.