An automobile socket

Abstract

The utility model discloses a kind of automobile sockets, including socket cover, terminal and socket body, installation chamber is equipped in the socket cover, and the installation chamber is communicated with the front end surface of the socket cover;The terminal and socket body are set in the installation chamber, and the front end of the terminal is inserted in the socket body;It is characterized by: the installation chamber in the rear end of the socket body is additionally provided with pressing plate structure, and the pressing plate structure includes ceramic heat insulation insulating plate and pressing plate component, the ceramic heat insulation insulating plate is set between the pressing plate component and the socket body, terminal positioning hole matched with the terminal is equipped on the ceramic heat insulation insulating plate, the pressing plate component is equipped with the accommodation cavity opposite the terminal positioning hole, the rear end of the terminal passes through the terminal positioning hole and is inserted in the accommodation cavity, and the front end of the pressing plate component is on the rear end surface of the ceramic heat insulation insulating plate.The utility model prolongs service life, reduces maintenance rate, and also guarantees use stability.

Description

Technical Field

[0001] This utility model relates to a socket, more particularly to an automotive socket, and especially to a DC vehicle socket. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels but employ new onboard power devices), integrating advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. Among these, vehicles that use charging generally require a charging gun to be plugged into a new energy electric vehicle socket for charging.

[0003] In existing technologies, vehicle sockets have multiple power terminals. The front end of each power terminal has a socket for connecting to the socket's terminals, thus achieving an electrical connection. The socket contains a socket body and a pressure plate. The front end of the power terminal is inserted into the socket body, which restricts its forward movement to disengage from the socket. The rear end of the power terminal is inserted into the pressure plate, which restricts its backward movement. The pressure plate is located within the socket at the rear of the socket body.

[0004] Currently, during charging, the power terminals heat up due to current transmission and resistance. The pressure plate of the DC vehicle socket is made of nylon. If the terminals overheat, the nylon softens, causing displacement and poor contact. It can also lead to thermal oxidative aging of internal seals, reducing their elasticity or even causing breakage, thus affecting the socket's protective performance. Furthermore, during long-term use, vehicle sockets are susceptible to arcing, a problem that nylon pressure plates cannot solve, potentially compromising the safety of the vehicle socket and even the entire vehicle's high-voltage wiring harness. Therefore, solving these technical problems is a direction that those skilled in the art need to address. Summary of the Invention

[0005] The purpose of this invention is to provide an automotive socket that effectively extends service life and improves practical safety while reducing maintenance rates.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a car socket, comprising: A socket sleeve, wherein the socket sleeve has an installation chamber communicating with the front end face of the socket sleeve; Terminals, wherein there are multiple terminals, and the terminals are disposed in the mounting cavity; A socket body is disposed in the mounting cavity, and the front end of the terminal is inserted into the socket body; A pressure plate structure is also installed in the mounting cavity at the rear end of the socket body. The pressure plate structure includes a ceramic heat insulation plate and a pressure plate component. The ceramic heat insulation plate is disposed between the pressure plate component and the socket body. The ceramic heat insulation plate is provided with a terminal positioning hole that matches the terminal. The pressure plate component is provided with a relief cavity facing the terminal positioning hole. The rear end of the terminal passes through the terminal positioning hole and is inserted into the relief cavity. The front end of the pressure plate component abuts against the rear end surface of the ceramic heat insulation plate.

[0007] In the above technical solution, the ceramic thermal insulation board is an alumina ceramic thermal insulation board.

[0008] In the above technical solution, the socket body is confined within the socket sleeve by fasteners.

[0009] In the above technical solution, a sleeve is provided on the front end face of the ceramic heat insulation plate, and a socket hole is provided on the rear end face of the socket body facing the sleeve, and the sleeve is inserted into the socket hole.

[0010] In the above technical solution, the rear end of the installation chamber is connected to the rear end face of the socket sleeve, and a rear end cover is detachably installed on the rear end of the socket sleeve.

[0011] In the above technical solution, the outer surface of the rear end of the socket sleeve is provided with a plurality of snap-fit ​​pieces, and the outer edge of the rear end cover is provided with a plurality of forward-extending buckles, each of the buckles being snapped into connection with one of the snap-fit ​​pieces.

[0012] In the above technical solution, the inner surface of the installation chamber is provided with an inwardly extending protrusion, the outer edge of the rear end face of the socket body abuts against the front end face of the extending protrusion, and the outer edge of the front end face of the ceramic heat insulation plate abuts against the rear end face of the extending protrusion. And / or, a front end seal is provided between the socket body and the extended protrusion.

[0013] In the above technical solution, a bolt is provided in the installation chamber, and the front end of the bolt passes through the pressure plate component and the ceramic heat insulation plate in sequence and is connected to the socket body.

[0014] In the above technical solution, the socket sleeve is further provided with a fixed terminal, the fixed terminal is installed in the relief cavity, the front end of the fixed terminal is connected to the terminal, and the rear end of the fixed terminal is connected to the wire harness.

[0015] In the above technical solution, the terminal includes a plug-in part and a connecting part arranged coaxially. The front end of the connecting part is connected to the rear end of the plug-in part. The outer diameter of the connecting part is smaller than the outer diameter of the plug-in part. The plug-in part is inserted into the socket body, and the connecting part is inserted into the terminal positioning hole. The front end face of the ceramic heat insulation plate abuts against the rear end face of the plug-in part. And / or, the outer surface of the connecting part is provided with at least one cut surface, and the inner wall of the terminal positioning hole is provided with a blocking surface that mates with the cut surface.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: 1. In this utility model, a ceramic heat-insulating plate and a pressure plate component are used to form a pressure plate structure. The ceramic heat-insulating plate is used to limit and insulate the terminals. The ceramic heat-insulating pressure plate has strong high temperature resistance and non-deformation ability, thereby effectively reducing the risk of poor contact due to terminal displacement, preventing damage to the socket, reducing maintenance rate, and extending service life. 2. In this utility model, the ceramic heat insulation board has strong heat insulation capacity, which can effectively reduce the heat transferred from the terminal to the pressure plate component, reduce the risk of pressure plate deformation, and prevent the internal sealing components from aging due to heat and oxygen, thus affecting the protective performance of the socket, thereby extending the service life and reducing the maintenance rate. 3. The pressure plate structure of this utility model is composed of a ceramic heat insulation plate and a pressure plate component. The ceramic heat insulation plate is used to contact the terminal. Compared with the structure in which the entire pressure plate structure is made of ceramic heat insulation material, the cost will be lower. 4. The pressure plate component of this utility model can be used to position the wiring harness, stabilize the automotive wiring harness, and also increase the electrical clearance of the wiring harness to improve safety; 5. This utility model uses a ceramic heat-insulating plate and terminal contact, which has strong anti-arc erosion performance and dielectric strength, reduces the current surge inside the socket, and improves the safety of the socket and the high-voltage wiring harness inside the car. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of this utility model; Figure 2 This is an exploded view of Embodiment 1 of this utility model (some components are not shown); Figure 3 This is a cross-sectional view of the structure in Embodiment 1 of this utility model (cross-sectional view at the terminal). Figure 4 This is a cross-sectional view of the structure in Embodiment 1 of this utility model (cross-sectional view at the axial protrusion). Figure 5This is a schematic diagram of the pressure plate structure and the terminal connection state in Embodiment 1 of this utility model; Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure; Figure 7 This is a schematic diagram of the socket sleeve in Embodiment 1 of this utility model (without the rear cover installed). Figure 8 This is a structural schematic diagram of the pressure plate component in Embodiment 1 of this utility model; Figure 9 This is a schematic diagram of the terminal structure in Embodiment 1 of this utility model; Figure 10 This is a schematic diagram of the structure of the ceramic heat insulation plate in Embodiment 1 of this utility model; Figure 11 This is a schematic diagram of the socket body in Embodiment 1 of this utility model.

[0018] The components are: 1. Socket sleeve; 2. Terminal; 3. Socket body; 4. Mounting chamber; 5. Ceramic heat insulation plate; 6. Pressure plate component; 7. Terminal positioning hole; 8. Relief cavity; 9. Axial protrusion; 10. Socket body limiting hole; 11. Relief hole; 12. Pressure plate relief cavity; 13. Insert sleeve; 14. Insertion hole; 15. Rear end cover; 16. Extension protrusion; 17. Front end seal; 18. Fixed terminal; 19. Protrusion; 20. Insertion part; 21. Connecting part; 22. Cut surface; 23. Blocking surface; 24. Snap-fit ​​component; 25. Buckle component; 26. Fastener. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: See Figure 1-11 As shown, an automotive socket includes a socket sleeve 1, a terminal 2, a socket body 3, and a pressure plate structure; The socket sleeve 1 is provided with an installation chamber 4 that communicates with the front end face of the socket sleeve 1; There are multiple terminals 2, and the terminals 2 are disposed within the mounting chamber 4; The socket body 3 is disposed in the mounting chamber 4, and the front end of the terminal 2 is inserted into the socket body 3; A pressure plate structure is also installed in the mounting chamber 4 at the rear end of the socket body 3. The pressure plate structure includes a ceramic heat insulation plate 5 and a pressure plate component 6. The ceramic heat insulation plate 5 is disposed between the pressure plate component 6 and the socket body 3. The ceramic heat insulation plate 5 is provided with a terminal positioning hole 7 that matches the terminal 2. The pressure plate component 6 is provided with a relief cavity 8 that faces the terminal positioning hole 7. The rear end of the terminal 2 passes through the terminal positioning hole 7 and is inserted into the relief cavity 8. The front end of the pressure plate component abuts against the rear end surface of the ceramic heat insulation plate.

[0020] The socket body is confined within the socket sleeve by fastener 26 (the fastener can be a bolt or other component, preferably a bolt).

[0021] In this invention, the automotive socket is preferably a DC vehicle socket. The socket body and the ceramic heat insulation plate can be connected to the socket sleeve via fasteners, or the socket body and the pressure plate structure can be connected to the socket sleeve via fasteners. If the socket body is connected to the socket sleeve via bolts, the fastener can be directly inserted from the front end of the socket body, then through the ceramic heat insulation plate (or an external pressure plate component) and connected to the socket sleeve, thereby fixing the socket body, the pressure plate structure, and the socket sleeve. The rear end of the pressure plate component abuts against the rear end face of the mounting chamber.

[0022] In this embodiment, the ceramic thermal insulation board is an alumina ceramic thermal insulation board, which can remain undeformed at 1600℃. Preferably, the pressure plate component is made of plastic. Since the rear end of the terminal is inserted into the relief cavity, the terminal does not contact the pressure plate component. Therefore, the high temperature generated by the terminal can block most of the heat transfer path, blocking the heat transfer of the main heat-generating area of ​​the terminal, thereby preventing the pressure plate component from deforming as much as possible and preventing the terminal from shifting and causing poor contact. Furthermore, a sealing element is provided inside the socket sleeve to seal the inside of the socket. Since the ceramic thermal insulation board can block heat transfer as much as possible, it can prevent the elasticity of the sealing element from decreasing or breaking, thereby ensuring the protective performance of the socket (e.g., waterproof performance). The pressure plate component holds the ceramic thermal insulation board against it (the rear end of the pressure plate component is limited by the rear end of the installation chamber) to prevent the ceramic thermal insulation board from shifting backward. The front end of the ceramic thermal insulation board can be limited by the socket body or socket sleeve, thereby limiting the ceramic thermal insulation board and preventing axial displacement. Meanwhile, the installation chamber can adopt an irregular cylindrical structure, and the shape of the ceramic thermal insulation board can be adapted to the cross-sectional shape of the installation chamber, thereby restricting the circumferential rotation of the ceramic thermal insulation board.

[0023] See Figure 4 , 7As shown in Figures 10 and 11, the rear end face of the socket body 3 is provided with at least one socket body limiting hole 10. The ceramic heat insulation plate 5 is provided with a clearance hole 11 facing the socket body limiting hole 10. An axial protrusion is provided on the inner wall of the socket sleeve, and screw holes are respectively provided at both ends of the axial protrusion. Fasteners are screwed through the socket body limiting hole, the clearance hole, and the screw hole at the front end of the axial protrusion from the front end, thereby realizing the axial and axial limiting of the socket body. At the same time, since the fasteners pass through the clearance hole, the rotation of the ceramic heat insulation plate in the installation cavity can be restricted. Its forward movement is limited by the socket body, and its rearward movement is limited by the pressure plate component.

[0024] In this embodiment, four axial protrusions 9 are arranged at intervals on the inner wall of the socket sleeve, and the axial protrusions extend along the length direction of the socket sleeve.

[0025] The pressure plate component 6 is provided with a pressure plate relief cavity 12 facing the relief hole 11. The two ends of the pressure plate relief cavity are respectively connected to the front end face and the rear end face of the pressure plate component. The pressure plate relief cavity is set facing the axial protrusion, so that the pressure plate component can be smoothly installed into the socket sleeve. It can also restrict the circumferential rotation of the pressure plate component through the axial protrusion and the pressure plate relief cavity.

[0026] The front end face of the ceramic heat insulation plate 5 is provided with a sleeve 13, and the rear end face of the socket body 3 is provided with a socket hole 14 facing the sleeve, and the sleeve 13 is inserted into the socket hole 14.

[0027] The design of the sleeve and socket allows for rapid alignment of the ceramic heat insulation plate and the socket body, ensuring precise terminal installation. Preferably, the outer surface of the sleeve fits against the inner surface of the socket; the front end face of the sleeve abuts against the front end face of the socket. This further ensures that the ceramic heat insulation plate will not rotate relative to the socket body, guaranteeing the robustness of the socket assembly.

[0028] In this embodiment, the socket body includes a main body plate and multiple protrusions disposed at the front end of the main body plate. The rear end face of the main body plate is provided with holes matching the number of protrusions, with each hole corresponding to one protrusion. The protrusion is provided with a mounting hole communicating with the corresponding hole. The front end face of the protrusion is provided with a connecting hole coaxial with the mounting hole. The diameter of the connecting hole is smaller than the diameter of the mounting hole. In this embodiment, the terminal is a power terminal (the socket will also be provided with signal terminals, which are not described in this embodiment and are not shown in the attached drawings). The illustration shows two power terminals. The power terminals generate heat, while the signal terminals generate less heat or almost no heat. The front ends of the power terminals and signal terminals are respectively inserted into the corresponding mounting holes and abut against the front end of the mounting holes (the outer diameter of the terminal is larger than the diameter of the corresponding protrusion connecting hole), thereby restricting the power terminals from moving forward and detaching from the socket body. When the charging gun and the socket are plugged in later, the plug-in terminal of the charger will be inserted into the mounting hole through the connecting hole and plugged in with the corresponding terminal to achieve electrical connection.

[0029] In this embodiment, the insert is located at the outer edge of the terminal positioning hole, and the socket is located on the inner surface of the rear end of the mounting hole, thereby enabling rapid positioning of the ceramic heat insulation plate and the socket body.

[0030] See Figure 1-3 As shown, the rear end of the mounting chamber 4 is connected to the rear end face of the socket sleeve 1, and a rear end cover 15 is detachably installed on the rear end of the socket sleeve 1.

[0031] Furthermore, the rear cover is provided with holes, through which fasteners pass and connect to the screw holes at the rear end of the corresponding axial protrusion, thereby achieving a tight connection between the rear cover and the socket sleeve. The front end face of the rear cover abuts against the rear end face of the pressure plate component, thereby limiting the rearward movement of the pressure plate component.

[0032] The inner surface of the mounting chamber 4 is provided with an inwardly extending protrusion 16. The outer edge of the rear end face of the socket body 3 abuts against the front end face of the extension protrusion 16, and the outer edge of the front end face of the ceramic heat insulation plate 5 abuts against the rear end face of the extension protrusion 16. The extension protrusion forms a frame-shaped structure or a ring-shaped structure, and its interior surrounds a chamber. The terminal passes through the chamber and is inserted into the socket body.

[0033] In this embodiment, to facilitate socket assembly, the socket sleeve is a hollow structure with openings at both ends. The socket body is inserted into the socket sleeve from the front end of the mounting chamber, and the pressure plate component and the ceramic heat insulation plate are inserted into the socket body from the rear end of the mounting chamber. In order to position the axial position of the pressure plate structure and the socket body, an extension protrusion is provided to accurately position the pressure plate structure and the socket body, ensuring the accuracy of their installation position. At the same time, the extension protrusion can restrict the rearward movement of the socket body and the forward movement of the ceramic heat insulation plate. After the pressure plate structure, terminals, and socket body are installed into the socket sleeve, the rear end cover is installed to close the rear end of the mounting chamber.

[0034] Since the socket body faces outwards, its front end is exposed when charging is required. To prevent water from entering the socket and contacting the terminals or internal wiring harness, a ring-shaped front sealing element 17 is provided between the socket body 3 and the extended protrusion 16. Preferably, the front sealing element is made of an elastic material, such as rubber or silicone, to provide a waterproof seal and prevent water from entering the socket from the front end. Because the rear cover is located inside the vehicle, there is no issue of water entering the socket sleeve from the rear end and contacting the terminals.

[0035] See Figure 3-5 As shown in Figure 8, the socket sleeve 1 is also provided with a fixed terminal 18. The fixed terminal 18 is installed in the relief cavity 8. The front end of the fixed terminal 18 is connected to the terminal 2, and the rear end of the fixed terminal 18 is connected to the wire harness.

[0036] The wiring harness is used to connect to the vehicle, thus establishing an electrical connection between the socket and the car. Multiple holes are provided on the rear cover for the wiring harness to pass through. The fixed terminals are connected to the wiring harness via crimping or soldering (soldering is preferred). The front end of the fixed terminals is connected to the terminal via plug-in or soldering. For example, a plug-in hole is provided at the rear end of the terminal (power terminal), and the front end of the fixed terminal plugs into the plug-in hole to achieve an electrical connection between the fixed terminal and the terminal (power terminal). Alternatively, a crown spring can be installed inside the plug-in hole, and the front end of the fixed terminal plugs into the crown spring. In this method, if the terminal is damaged or its performance deteriorates (frequent plugging between the front end of the power terminal and the charging gun can cause wear and deformation of the plating of the crown spring or the plug-in hole inside the front end of the terminal, leading to increased resistance or poor contact), the terminal can be directly replaced without replacing the fixed terminal and the wiring harness (the crown spring at the rear end of the terminal can also be removed and reused without replacement), making replacement more convenient and less costly. Of course, the fixed terminal can also be integrated with the terminal. In this case, when replacing it, the terminal, the fixed terminal and the wiring harness connected to it need to be replaced together.

[0037] The clearance cavity has a front-larger, rear-smaller structure. For example, the clearance cavity protects the interconnected front and rear cavities. The width of the front cavity is greater than the width of the rear cavity. The middle outer surface of the fixed terminal has a protrusion 19. The fixed terminal behind the protrusion is located in the rear cavity, while the front end of the fixed terminal and the protrusion are located in the front cavity. The fixed terminal at the front end of the protrusion is inserted into or fixedly connected to the terminal. The rear end face of the protrusion abuts against the rear sidewall of the front cavity, thereby restricting the rearward movement of the fixed terminal. The terminal, in turn, restricts the forward movement of the fixed terminal. This method can restrict the fixed terminal. At the same time, since the wire harness and the fixed terminal are connected, the wire harness can be positioned. Furthermore, since both the wire harness and the fixed terminal are located within the clearance cavity, different wire harnesses and fixed terminals are separated, which increases electrical clearance and improves safety during use.

[0038] Meanwhile, in this utility model, the pressure plate structure adopts a combination of ceramic heat insulation board and pressure plate, and the pressure plate is made of plastic. Since alumina ceramic is relatively expensive, if the entire pressure plate structure is made of alumina ceramic, the cost will be high. In addition, due to the large size, it is difficult to guarantee the processing accuracy. Therefore, the pressure plate structure is partially made of alumina ceramic and partially made of plastic, which reduces the amount of material used in the ceramic heat insulation board and also reduces its length, thereby improving the processing accuracy and reducing the cost while ensuring performance.

[0039] See Figure 9 , 10 As shown, the terminal 2 includes a plug-in portion 20 and a connecting portion 21 arranged coaxially. The front end of the connecting portion 21 is connected to the rear end of the plug-in portion 20. The outer diameter of the connecting portion 21 is smaller than the outer diameter of the plug-in portion 20. The plug-in portion 20 is inserted into the socket body 3, and the connecting portion 21 is inserted into the terminal positioning hole 7. The front end face of the ceramic heat insulation plate 5 abuts against the rear end face of the plug-in portion 20.

[0040] In this embodiment, the front end of the plug-in part has a socket that engages with the plug-in terminal of the charging cavity. A crown spring can be installed inside the socket. The rear end of the connector part can also have a socket, and a crown spring is also installed inside the socket for engaging with the front end of the fixed terminal. To restrict the rearward movement of the terminal and limit its axial movement, the diameter of the terminal positioning hole is smaller than the outer diameter of the plug-in part. The rear end face of the plug-in part abuts against the front end face of the ceramic heat insulation plate, thereby realizing the degree of freedom of the terminal to move backward. Its degree of freedom of movement forward is limited by the socket body.

[0041] Referring to Figures 9 and 10, the outer surface of the connecting portion 21 is provided with at least one cut surface 22, and the inner wall of the terminal positioning hole 7 is provided with a blocking surface 23 that mates with the cut surface 22. Preferably, there are two cut surfaces symmetrically arranged on opposite sides of the outer surface of the connecting portion, and there are also two blocking surfaces symmetrically arranged on both sides of the terminal positioning hole. The cut surfaces abut against the blocking surfaces, making the connecting portion and the terminal positioning hole an irregular circular structure, thereby restricting the circumferential rotational freedom of the terminal and preventing the fixed terminal from rotating and causing the wire harness and the fixed terminal to separate. This ensures the stability of the electrical connection.

[0042] To facilitate the installation and removal of the rear cover and ensure ease of assembly, the outer surface of the rear end of the socket sleeve 1 is provided with multiple snap-fit ​​pieces 24, and the outer edge of the rear end cover 15 is provided with multiple forward-extending fasteners 25. Each fastener 25 is snapped into one of the snap-fit ​​pieces 24. This snap-fit ​​method allows for pre-positioning; alternatively, the rear end cover and socket sleeve can be connected without fasteners. Preferably, fasteners are installed after the rear end cover and socket sleeve are snapped together, which improves the stability of the installation. In this embodiment, the pressure plate component, rear end cover, socket sleeve, and socket body are all made of insulating plastic; however, other insulating materials can also be used. In this embodiment, the snap-fit ​​pieces are protrusions, and the fasteners are elastic snaps. The connection between the socket sleeve and the rear end cover is achieved through the snap-fit ​​of the elastic snaps and the protrusions.

[0043] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. For instance, the two components can be mechanically connected by contact or abutting; they can also be directly hooked or connected by an intermediate medium; or they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A car socket, comprising: A socket sleeve, wherein the socket sleeve has an installation chamber communicating with the front end face of the socket sleeve; Terminals, wherein there are multiple terminals, and the terminals are disposed in the mounting cavity; A socket body, wherein the socket body is disposed within the mounting cavity, and the front end of the terminal is inserted into the socket body; characterized in that: A pressure plate structure is also installed in the mounting cavity at the rear end of the socket body. The pressure plate structure includes a ceramic heat insulation plate and a pressure plate component. The ceramic heat insulation plate is disposed between the pressure plate component and the socket body. The ceramic heat insulation plate is provided with a terminal positioning hole that matches the terminal. The pressure plate component is provided with a relief cavity facing the terminal positioning hole. The rear end of the terminal passes through the terminal positioning hole and is inserted into the relief cavity. The front end of the pressure plate component abuts against the rear end surface of the ceramic heat insulation plate.

2. The automotive socket according to claim 1, characterized in that: The ceramic thermal insulation board is an alumina ceramic thermal insulation board.

3. The automotive socket according to claim 1, characterized in that: The socket body is confined within the socket sleeve by fasteners.

4. The automotive socket according to claim 3, characterized in that: The front end face of the ceramic heat insulation plate is provided with a sleeve, and the rear end face of the socket body is provided with a socket hole facing the sleeve, and the sleeve is inserted into the socket hole.

5. The automotive socket according to claim 1, characterized in that: The rear end of the mounting chamber is connected to the rear end face of the socket sleeve, and a rear end cover is detachably installed on the rear end of the socket sleeve.

6. The automotive socket according to claim 5, characterized in that: The outer surface of the rear end of the socket sleeve is provided with a plurality of snap-fit ​​pieces, and the outer edge of the rear end cover is provided with a plurality of forward-extending buckles, each of the buckles being snapped into connection with one of the snap-fit ​​pieces.

7. The automotive socket according to claim 5, characterized in that: The inner surface of the mounting chamber is provided with an inwardly extending protrusion, the outer edge of the rear end face of the socket body abuts against the front end face of the extending protrusion, and the outer edge of the front end face of the ceramic heat insulation plate abuts against the rear end face of the extending protrusion. And / or, a front end seal is provided between the socket body and the extended protrusion.

8. The automotive socket according to claim 7, characterized in that: The installation chamber is equipped with bolts, the front ends of which pass through the pressure plate component and the ceramic heat insulation plate in sequence and are connected to the socket body.

9. The automotive socket according to claim 1, characterized in that: The socket sleeve is also provided with a fixed terminal, which is installed in the relief cavity. The front end of the fixed terminal is connected to the terminal, and the rear end of the fixed terminal is connected to the wire harness.

10. The automotive socket according to claim 1, characterized in that: The terminal includes a plug-in portion and a connecting portion arranged coaxially. The front end of the connecting portion is connected to the rear end of the plug-in portion. The outer diameter of the connecting portion is smaller than the outer diameter of the plug-in portion. The plug-in portion is inserted into the socket body, and the connecting portion is inserted into the terminal positioning hole. The front end face of the ceramic heat insulation plate abuts against the rear end face of the plug-in portion. And / or, the outer surface of the connecting part is provided with at least one cut surface, and the inner wall of the terminal positioning hole is provided with a blocking surface that mates with the cut surface.

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