CN207098132U - Socket casing, Socket casing component and socket - Google Patents

Abstract

The utility model discloses a kind of Socket casing, Socket casing component and socket available for charging electric vehicle seat.The Socket casing includes shell body, supporting walls and limited wall.The shell body can be used for supporting connection terminal.The shell body has axial direction in connection terminal plug orientation.The supporting walls project laterally outward setting from the shell body.The limited wall projects laterally outward setting from the shell body, and is set with the supporting walls axially spaced-apart, for carrying out axial limiting to support jointly.The utility model Socket casing structure is simplified and assembles facility.

Description

Socket housing, socket housing assembly and socket

technical field

The utility model relates to a socket supporting structure, in particular to a socket shell, a socket shell assembly and a socket which can be used for a charging seat of an electric vehicle.

Background technique

The socket is used to realize the electrical connection between the two by mating with the corresponding electronic device. As more and more electric vehicles are put into operation, how to improve the charging safety performance of electric vehicles has become a factor that needs to be considered. Electric vehicles are generally charged through the mating of the charging stand and the external charging gun. Generally speaking, a socket requires a plurality of supporting parts to be assembled into one body. How to realize convenient assembly of the socket housing assembly becomes a factor to be considered.

Utility model content

One of the purposes of the utility model is to provide a socket shell, socket shell assembly and socket with simple structure and convenient assembly in order to overcome the deficiencies in the prior art.

In order to achieve the above purpose, the utility model is realized through the following technical solutions:

The utility model provides a socket housing. The socket housing includes a housing body, a supporting wall and a limiting wall. The case body can be used to support the connection terminal. The shell body has an axial direction in the plugging-out direction of the connecting terminal. The supporting wall protrudes laterally outward from the shell body. The limiting wall protrudes laterally outward from the housing body, and is axially spaced apart from the supporting wall, so as to jointly axially limit the bracket.

Preferably, an accommodating groove is defined between the supporting wall and the limiting wall for accommodating a limiting fitting part.

Preferably, the shell body is provided with a pipe wall. The pipe wall protrudes outward from the shell body and encloses a drain lumen. The support wall is part of the tube wall.

Preferably, the housing body has an axially extending surrounding wall. The surrounding wall extends along the circumference of the shell body and encloses a cavity. The drainage lumen communicates with the cavity.

Preferably, the housing body is provided with mounting holes. The mounting holes are used to accommodate connection terminals. The installation hole extends along the axial direction of the shell body and communicates with the drain cavity.

Preferably, the support wall has a stop plane. The limiting stop plane is arranged opposite to the limiting wall for axially blocking cooperation with the bracket.

Preferably, the limiting wall has a limiting plane. The limiting plane is arranged opposite to the supporting wall for axially limiting cooperation with the bracket.

Preferably, the limiting wall is arranged in a ring along the circumferential direction of the housing body. The limiting wall has a lower surface for supporting a sealing ring.

The utility model provides a socket housing assembly. The socket housing assembly includes the socket housing and the bracket according to any one of the foregoing. The bracket includes a bracket body and a position-limiting fitting part. The position-limiting matching portion is continuously extended from the bracket body along the axial direction of the bracket, and forms a first position-limiting end portion and a second position-limiting end portion. After the socket housing is installed on the bracket, the position-limiting fitting part is arranged between the support wall and the position-limiting wall. In addition, the first position-limiting end and the support wall are arranged in an axially blocking fit. The second position-limiting end and the position-limiting wall are provided in an axially blocking fit.

Preferably, the bracket body is provided with receiving holes. The accommodating hole is configured as a blind hole or a through hole extending along the axial direction of the bracket, and is used for accommodating at least part of the shell body.

Preferably, the stent body includes hole walls. The hole wall surrounds the receiving hole. The position-limiting matching portion protrudes inwardly from the bracket body relative to the hole wall, and forms a step with the hole wall.

Preferably, the first position-limiting end is disposed on the bracket body, and forms the step with the hole wall. The limiting wall extends to cooperate with the step blocking.

Preferably, a retaining wall is arranged on the limiting wall. The retaining wall extends along the axial direction of the housing body and is used for supporting the sealing ring.

Preferably, the socket housing assembly further includes a sealing ring. The sealing ring is arranged sealingly between the retaining wall and the hole wall.

Preferably, the sealing ring is at least partially in contact with the lower surface of the limiting wall.

Preferably, the sealing ring includes a sealing body and a sealing flange. The sealing flange extends continuously from the sealing main body to cover the free end of the retaining wall.

Preferably, the housing body is provided with fastening installation parts. The fastening installation part is fastened to the bracket body.

Preferably, the shell body extends laterally and is formed with a first side wall and a second side wall. The supporting wall and the limiting wall are arranged on the first side wall. The fastening mount is disposed on the second side wall.

Preferably, the fastening mount includes a fastening hole. The shell body and the bracket body are fastened and assembled together by a fastener passing through the fastening hole.

Preferably, the socket housing assembly further includes a first mating housing. The first mating shell is arranged at one end of the shell body.

Preferably, the first mating housing has a flip cover. The flip cover is set reversibly. When the connection terminal is installed on the shell body, the flip cover can be turned over to seal and isolate one end of the connection terminal from the outside or to expose one end of the connection terminal.

Preferably, the socket housing assembly further includes a second mating housing. The second mating shell is arranged at the other end of the shell body. The second mating housing is provided with a wire guiding structure for guiding external wires into the socket housing assembly.

The utility model provides a socket. The socket includes the socket housing assembly and connection terminals described in any one of the foregoing. The connecting terminals are arranged on the shell body.

Preferably, the socket is an electric vehicle charging stand.

Compared with the prior art, the socket housing of the utility model is configured as a drainage lumen capable of internal drainage through the pipe wall, and can also realize axial positioning of the bracket. The pipe wall can realize axial limitation, and also simplify the structure of the matching limitation wall without additionally designing a relatively complicated assembly structure. Therefore, the socket housing is not only simple in structure, but also can be conveniently assembled with the bracket, thereby reducing the production cost.

Description of drawings

Fig. 1 is a schematic diagram of a three-dimensional structure at one axial end of a socket housing provided by the present invention.

FIG. 2 is a schematic perspective view of the other end of the socket housing shown in FIG. 1 .

Fig. 3 is a three-dimensional structural schematic diagram of a socket housing assembly provided by the present invention.

FIG. 4 is a schematic perspective view of the socket housing assembly in FIG. 3 at another angle.

FIG. 5 is a schematic perspective view of the three-dimensional structure of the bracket in FIG. 3 .

FIG. 6 is a schematic perspective view of the three-dimensional structure of the bracket in FIG. 5 at another angle.

FIG. 7 is a partial perspective cross-sectional view of the socket housing assembly of FIG. 3 without a seal.

FIG. 8 is a schematic perspective view of the socket housing assembly in FIG. 3 when the first mating housing is provided.

FIG. 9 is a partial perspective cross-sectional view of the socket housing assembly of FIG. 8 .

FIG. 10 is a schematic perspective view of the socket housing assembly in FIG. 8 when a second mating housing is provided.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

Embodiment one:

Please refer to FIG. 1 and FIG. 2 , which are a socket housing 101 provided by the present invention. The socket housing 101 includes a housing body 10 , a supporting wall 20 and a limiting wall 30 . Both the supporting wall 20 and the limiting wall 30 protrude laterally on the housing body 10 and are axially spaced apart from each other, so as to realize the axial limiting of the bracket 80 .

The housing body 10 has an axial direction for supporting connection terminals (not shown in the figure). The specific shape and structure of the shell body 10 only need to be able to support the corresponding connecting terminals and other structures. In this embodiment, the housing body 10 is roughly in the shape of a cuboid. Part of the case body 10 is accommodated in an accommodation hole 85 of a bracket 80 described below. In order to improve the performance of stably supporting and maintaining the connecting terminals, the housing body 10 is provided with mounting holes 12 . The installation hole 12 is extended along the axial direction of the housing body 10 . Specifically, the installation hole 12 is a through hole penetrating along the axial direction of the housing body 10 . The number and each of the mounting holes 12 are selected according to application requirements. In this embodiment, the installation hole 12 is surrounded by the installation hole wall 13 . Specifically, the installation hole 12 protrudes along the axial direction of the housing body 10 . In this embodiment, nine installation holes 12 , 12 b , 12 c , 12 d , 12 e , 12 f , 12 j , 12 h , 12 i are provided on the housing body 10 to facilitate the corresponding electric vehicle charging.

In order to enhance the protection of the installation hole 12 and the connecting terminals accommodated in the installation hole 12 , the housing body 10 has a surrounding wall 14 . The surrounding wall 14 protrudes along the axial direction of the housing body 10 and surrounds a tube cavity 16 along the circumference of the housing body 10 . The surrounding blocking wall 14 surrounds all installation holes 12 . That is, the mounting holes 12 are all accommodated in the lumen. The blocking wall 14 axially extends to protrude from the mounting hole 12 .

The supporting wall 20 protrudes laterally and outwardly from the shell body 10 . That is, the supporting wall 20 is arranged on the outer surface of the peripheral wall of the housing body 10 in a manner perpendicular to the axial direction of the housing body 10 . In this embodiment, in order to make full use of space and improve application performance, the support wall 20 is a part of the pipe wall. The pipe wall defines a drainage lumen 22 . For example, the support wall 20 is a flat end wall of the pipe wall. The drain lumen 22 is used for draining accumulated water in the shell body 10 . In this embodiment, the supporting wall 20 is arranged on the surrounding wall 14 and communicates with the lumen 16, so as to facilitate the drainage of accumulated water brought in by the connection terminals. The specific shape of the support wall 20 only needs to be able to realize corresponding drainage. In order to facilitate a stable delimitation of the support 80 described below, the axial end of the support wall 20 has a stop plane 24 . The stop plane 24 is axially opposite to the limiting wall 30 . Specifically, the stop plane 24 is disposed opposite to the below-described stop plane 32 of the limiting wall 30 . That is, at least part of the bottom of the supporting wall 20 is a plane, so as to be configured as a stop plane 24 that can limit the position of the bracket 80 . In order to achieve a stable positioning of the bracket 80 and facilitate disassembly, the bottom of the support wall 20 is provided with an abutment rib 26 . The abutting rib 26 protrudes along the axial direction of the housing body 10 . In this embodiment, the bottom of the supporting wall 20 is flat. The bottom of the supporting wall 20 is in the shape of a long plate along the lateral extension of the shell body 10 . The abutment rib 26 is a flange provided at the bottom free end of the support wall 20 along the transverse direction of the shell body 10 . Of course, the abutting ribs 26 also have corresponding planes (not marked in the figure), so that when the brackets 80 abut, they face to face each other so as to axially block each other.

The limiting wall 30 protrudes outward from the housing body 10 . The limiting wall 30 is axially spaced apart from the supporting wall 20 , so as to realize the axial limiting of the bracket 80 . Specifically, the limiting wall 30 is spaced apart from the supporting wall 20 to form a limiting groove 50 . The limiting groove 50 is used to realize the axial limiting of the limiting fit portion 83 of the bracket 80 . In this embodiment, the limiting groove 50 is surrounded by the limiting plane of the limiting wall 30 , the outer surface of the shell body 10 and the stopping plane 24 of the supporting wall 20 . The specific shape of the limiting wall 30 only needs to be able to limit the bracket 80 . In order to provide stable support for the bracket 80 , the limiting wall 30 has a limiting plane 32 extending transversely of the housing body 10 . In order to further improve the stable supporting performance of the limiting wall 30, the limiting plane 32 is a plane. In order to achieve more stable positioning of the bracket 80 , the limiting plane 32 is arranged axially opposite to the supporting wall 20 . Of course, according to needs, the limiting plane 32 and the supporting wall 20 can be partially or completely axially misaligned. In order to facilitate assembly and make full and reasonable use of space, the limiting wall 30 and the supporting wall 20 are both disposed on the lateral side wall 10 a of the housing body 10 .

In order to further stably assemble the socket housing 101 with the bracket 80 , the socket housing 101 further includes a fastening installation part 40 . The fastening installation part 40 can be fastened and assembled with the bracket 80 . The specific structure of the fastening installation part 40 is selected according to needs, for example, it may be a buckle. In this embodiment, for the convenience of installation, the fastening installation part 40 is provided with a fastening hole 42 . The fastening mount 40 includes lugs 44 . The fastening hole 42 is arranged axially through the ear plate 44 . The ear plate 44 protrudes outward relative to the surrounding wall 12 . The fastening hole 42 is used to pass through the fastening member 46 shown in FIG. 4 described below, so as to fasten and assemble the socket housing 101 and the bracket 80 as a whole. In order to further facilitate the assembly of the socket housing 101 and the bracket 80 , the fastening installation part 40 protrudes from the other lateral side wall 10 b of the housing body 10 .

In order to improve the overall stability of the socket housing 101 and facilitate the realization of electrical insulation, the socket housing 101 is an injection molded integral part.

Embodiment two:

Please refer to FIG. 3 and FIG. 4 , the utility model provides a socket housing assembly 103 . The socket housing assembly 103 includes a bracket 80 and the socket housing 101 according to the first embodiment. The socket housing 101 is assembled with the bracket 80 . The socket housing 101 and the bracket 80 are independent molded parts respectively. That is, the socket housing 101 and the bracket 80 are separate parts that can be separated from each other.

Please refer to FIG. 5 and FIG. 6 together, the bracket 80 includes a bracket body 81 and a limited fit portion 83 . The position-limiting matching portion 83 is continuously extended from the bracket body 81 along the axial direction of the housing body 10 , and can respectively axially block fit with the support wall 20 and the position-limiting wall 30 . Specifically, the position-limiting matching portion 83 is accommodated in the position-limiting groove 50 of the socket housing 101 . The specific shape and structure of the bracket body 81 only need to be able to achieve corresponding support. In this embodiment, the bracket body 81 is substantially plate-shaped extending along the transverse and longitudinal directions of the shell body 10 . In order to facilitate integration with the socket housing 101 and cooperation with other components, the bracket body 81 is provided with a receiving hole 85 . The receiving hole 85 extends along the axial direction of the housing body 10 to form a blind hole or a through hole. In this embodiment, the accommodating hole 85 is a through hole. The accommodating hole 85 is used for accommodating the housing body 10 . The receiving hole 85 is surrounded by a hole wall 86 .

The specific shape and structure of the limited fit portion 83 can be as long as it can achieve axial blocking fit with the socket housing 101. In this embodiment, the limited fit portion 83 is an axially extending column. More specifically, the position-limiting fitting portion 83 is roughly in the shape of a rectangular column. In order to further improve the limited fit performance, a plurality of the limited fit portions 83 are arranged along the lateral direction of the housing body 10 . In this embodiment, the position-limiting matching portion 83 is roughly in the shape of a rectangular column pile. Correspondingly, the limiting fit portion 83 extends axially and has a first limiting end portion 83a and a second limiting end portion 83b. The first limiting end portion 83a is in blocking fit with the supporting wall 20 . Specifically, the first position-limiting end portion 83a abuts and fits with the abutting rib 26 of the supporting wall 20 . The second position-limiting end portion 83b is axially co-operated with the position-limiting wall 30 . In this embodiment, the end surfaces of the first limiting end portion 83a and the second limiting end portion 83b are planes, so that they are respectively in line with the stop plane 24 of the support wall 20 and the limiting surface. Between the limiting planes 32 of the positioning wall 30 is a plane-to-plane blocking fit.

The setting method of the position-limiting fit portion 83 only needs to be able to realize the corresponding blocking fit. In this embodiment, in order to make full use of the space and facilitate manufacture, the limiting fit portion 83 is continuously extended from the upper surface 81 a of the bracket body 81 in the axial direction, and is arranged along the direction relative to the hole wall 86 . Inner lateral protruding setting. The second position-limiting end 83b of the position-limiting fitting portion 83 and the hole wall 86 form a step 88, so that the second position-limiting end 83b and the hole wall 86 respectively realize the position-limiting Axial and transverse blocking fit of wall 30 . That is, the limiting wall 30 can block fit with the step 88 .

Please also refer to FIG. 7 , in order to stably hold the sealing member 70 described below to improve the sealing and waterproof performance, the lower surface of the limiting wall 30 is provided with a retaining wall 36 . The retaining wall 36 is opposite to the limiting plane 32 . The limiting wall 30 has a lower surface 34 . The supporting surface 34 is opposite to the limiting plane 32 to support the sealing member 70 . That is, the limiting plane 32 is the upper surface of the limiting wall 30 , and the lower surface 34 is the lower surface of the limiting wall 30 . The lower surface 34 is at least partially in contact with the sealing member 70 , ie forms a sealing surface. The retaining wall 36 is axially projecting. The retaining wall 36 is spaced apart from the free end of the limiting wall 30 , and is spaced apart from the hole wall 86 to enclose a retaining cavity 87 . The retaining wall 36 is spaced apart from the retaining wall 12 and encloses a second retaining cavity 89 .

In order to improve the sealing and waterproof performance of the socket housing assembly 103 , the socket housing assembly 103 further includes a seal 70 . The sealing member 70 is disposed between the hole wall 86 and the retaining wall 36 of the socket housing 101 , and is arranged to seal the gap between the hole wall 86 and the socket housing 101 . The sealing member 70 extends along the circumferential direction of the housing body 10 and extends a closed-loop sealing ring. The sealing member 70 is a rubber ring. The specific shape of the sealing member 70 only needs to be able to achieve corresponding sealing. In this embodiment, the sealing element 70 includes a sealing body 72 and a sealing flange 74 . The sealing body 72 is accommodated in the holding cavity 87 and is arranged to seal the gap between the hole wall 86 and the socket housing 101 . The sealing flange 74 is disposed on the sealing body 72 and protrudes inward along the lateral direction of the housing body 10 . The sealing flange 74 is disposed beyond the retaining wall 36 to seal the gap between the socket housing 101 and the first mating housing 91 described below. Specifically, the sealing flange 74 extends to abut against the mounting foot 91 a of the first mating housing 91 , and seals the gap between the mounting foot 91 a and the retaining wall 36 . The mounting feet 91 a are inserted into the second holding cavity 89 .

Correspondingly, in order to improve the fastening and assembling performance, the socket housing 101 is fastened and assembled on the support 10 through the fastening installation part 40 . Specifically, the fastening installation part 40 passes through the fastening hole 44 on the socket housing 101 and the matching fastening hole 84 on the bracket 10 through the fastener 46, so that the shell body 10 and the bracket body 81 are fastened and assembled together. In this embodiment, two fasteners 46 are arranged in a row in the transverse direction.

Embodiment three:

Please refer to FIG. 8 and FIG. 9 , as a modification of the second embodiment, the present invention provides another socket housing assembly 105 . Compared with the second embodiment, the socket housing assembly 105 further includes a first mating housing 91 . The first mating housing 91 is arranged at the one axial end 10c of the housing body 10 and sealed against the axial one end 10c of the housing body 10 .

The first mating shell 91 only needs to be able to seal the axial end 10c of the main body 10 . In order to facilitate assembly and improve sealing and waterproof performance, the first mating housing 91 has mounting feet 91 a extending along the axial direction of the housing body 10 . The mounting feet 91 a are inserted into the second holding cavity 89 . The mounting foot 91 a laterally abuts against the sealing flange 74 to be arranged in a sealing fit.

In order to facilitate plugging and mating, the first mating housing 91 has reversible end covers 92, 92b. The end caps 92 and 92b are reversible, that is, they can be opened or closed, so that the connection and isolation of the installation hole 12 inside the socket housing 101 and the outside can be realized. The specific shapes and structures of the first mating housing 91 and the end covers 92, 92b are selected according to requirements.

Embodiment four:

Please refer to FIG. 10 , as a modification of the third embodiment, the utility model also provides a socket housing assembly 107 . Compared with the third embodiment, the socket housing assembly 107 further includes a second mating housing 95 . The second mating shell 95 is disposed at the other end 10d of the shell body 10 .

The second mating housing 95 is used to seal and protect the connection between the connection terminals on the socket housing 101 and the wires. The second mating housing 95 is used to hold wires (not shown in the figure). The second mating housing 95 is provided with a wire guiding structure 96 . The wire guide structure 96 is used to guide external wires into the interior of the socket housing assembly 107 . The number of the wire guiding structures 96 is selected according to needs. The wire guiding structure 96 may guide a through hole or a guiding groove or the like. The wire guide structure 96 can be used to guide wires that can carry alternating current (AC) and/or direct current (DC).

Embodiment five:

The utility model also provides a socket. The socket includes any one of the socket housing components 103, 105 or 107 described in Embodiments 2, 3, and 4 and connecting terminals (not shown in the figure). The connecting terminals are disposed on the housing body 10 . Specifically, the connection terminals of part of the structure are installed in the installation holes 12 .

The specific shape and specification of the connection terminal only need to be able to realize the corresponding electrical connection. In this embodiment, the connection terminal is a female terminal, which can be connected to the male terminal pair of the charging gun for power distribution. Specifically, the connecting terminal can electrically connect the mating male terminal and the wire. The connecting terminal inputs the current input to the matching male terminal to the battery of the electric vehicle through the wire. Correspondingly, the socket is an electric vehicle charging stand.

It should be noted that "up, down", "left, right", "front, back", "one, another" etc. appearing in the present utility model are all relative concepts. Arrows in FIG. 1 show "axial", "longitudinal" and "transverse". Unless otherwise specified, the "axial direction" in the present invention refers to the extending direction of the mounting hole 12, that is, the direction in which the connecting terminal is plugged and pulled out. “Lateral direction” refers to the length direction of the housing body 10 shown in the figure, or the roughly up-down direction in FIG. 1 , that is, the direction in which the supporting wall 20 and the limiting wall 30 are perpendicular to the housing body 10 . "Longitudinal" refers to the width direction of the housing body 10 shown in the figure.

The above are only preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Any modification, equivalent replacement or improvement within the spirit of the present utility model is covered by the claims of the present utility model. .

Claims (24)

1. A socket housing, characterized in that, comprising: The shell body can be used to support the connection terminal; the shell body has an axial direction in the insertion and withdrawal direction of the connection terminal; a support wall protruding laterally outward from the shell body; and A limiting wall protrudes laterally outward from the housing body and is axially spaced apart from the supporting wall, so as to jointly axially limit the bracket. 2. The socket housing according to claim 1, characterized in that: An accommodating groove is defined between the supporting wall and the limiting wall for accommodating a limiting fitting part. 3. The socket housing according to claim 1, characterized in that: The shell body is provided with a pipe wall; the pipe wall protrudes outward from the shell body and encloses a drainage lumen; The support wall is part of the tube wall. 4. The socket housing according to claim 3, characterized in that: The shell body has an axially extending surrounding wall; The surrounding wall extends along the circumference of the shell body and encloses a cavity; The drainage lumen communicates with the cavity. 5. The socket housing according to claim 3, characterized in that: The shell body is provided with mounting holes; The mounting holes are used to accommodate connecting terminals; The installation hole extends along the axial direction of the shell body and communicates with the drain cavity. 6. The socket housing according to claim 1, characterized in that: The support wall has a stop plane; The stop plane is arranged opposite to the limit wall for axially blocking cooperation with the bracket. 7. The socket housing according to claim 1, characterized in that: The limiting wall has a limiting plane; The limiting plane is arranged opposite to the supporting wall for axially limiting cooperation with the bracket. 8. The socket housing according to claim 1, characterized in that: The limiting wall is arranged in a ring along the circumference of the shell body; the limiting wall has a lower surface for supporting a sealing ring. 9. A socket housing assembly, characterized in that it comprises: A socket housing according to any one of claims 1 to 8; and A bracket, the bracket includes a bracket body and a limit fitting part; the limit fit part is continuously extended from the bracket body along the axial direction of the bracket, and forms a first limit end and a second limit end department; After the socket housing is installed on the bracket, the position-limiting fit part is arranged between the support wall and the position-limiting wall; and The first position-limiting end and the support wall are arranged in an axially blocking fit; The second position-limiting end and the position-limiting wall are provided in an axially blocking fit. 10. The socket housing assembly of claim 9, wherein: The support body is provided with accommodating holes; the accommodating holes are formed as blind holes or through holes extending along the axial direction of the support, and are used for accommodating at least part of the shell body. 11. The socket housing assembly of claim 10, wherein: The bracket body includes a hole wall; the hole wall surrounds the receiving hole; The position-limiting matching portion protrudes inwardly from the bracket body relative to the hole wall, and forms a step with the hole wall. 12. The socket housing assembly of claim 11, wherein: The first position-limiting end is arranged on the bracket body, and forms the step with the hole wall; The limiting wall extends to cooperate with the step blocking. 13. The socket housing assembly of claim 11, wherein: A retaining wall is arranged on the limiting wall; the retaining wall extends along the axial direction of the shell body and is used for supporting the sealing ring. 14. The socket housing assembly of claim 13, further comprising: A sealing ring is arranged sealingly between the retaining wall and the hole wall. 15. The socket housing assembly of claim 14, wherein: The sealing ring is at least partly in contact with the lower surface of the limiting wall. 16. The socket housing assembly of claim 14, wherein: The sealing ring includes a sealing body and a sealing flange; The sealing flange extends continuously from the sealing main body to cover the free end of the retaining wall. 17. The socket housing assembly of claim 9, wherein: The shell body is provided with fastening installation parts; The fastening installation part is fastened to the bracket body. 18. The socket housing assembly of claim 17, wherein: The shell body extends laterally and is formed with a first side wall and a second side wall; The supporting wall and the limiting wall are arranged on the first side wall; The fastening mount is disposed on the second side wall. 19. The socket housing assembly of claim 17, wherein: The fastening mount includes a fastening hole; The shell body and the bracket body are fastened and assembled together by a fastener passing through the fastening hole. 20. The socket housing assembly of claim 9, further comprising: A first mating shell, the first mating shell is arranged at one end of the shell body. 21. The socket housing assembly of claim 20, wherein: The first mating housing has a flip cover; The flip cover is reversibly set; When the connection terminal is installed on the shell body, the flip cover can be turned over to seal and isolate one end of the connection terminal from the outside or to expose one end of the connection terminal. 22. The socket housing assembly of claim 9, further comprising: a second mating shell, the second mating shell is arranged at the other end of the shell body; The second mating housing is provided with a wire guiding structure for guiding external wires into the socket housing assembly. 23. A socket, characterized in that it comprises: A socket housing assembly according to any one of claims 9 to 22; and Connecting terminals, the connecting terminals are arranged on the shell body. 24. The socket of claim 23, wherein: The socket is an electric vehicle charging stand.