Pressing structure for charging socket

Abstract

The utility model belongs to the technical field of new energy charging sockets, and discloses a pressing structure for a charging socket, which comprises an insulator, a pressing plate tail cover arranged on the rear side of the insulator, a PCB (printed circuit board) arranged in the insulator, two power terminals and seven contact terminals arranged on the PCB, two power holes arranged on the PCB, and copper-clad rings arranged at the power holes. A copper-clad layer connected with the copper-clad ring is arranged in the PCB, a temperature sensor is arranged on the copper-clad layer, a contact ring is arranged on the power terminal, a supporting tube is arranged on the pressing plate tail cover, a plurality of supporting salient points are arranged at one end, close to the PCB, of the supporting tube, one side of the contact ring abuts against the copper-clad layer, and the other side of the contact ring abuts against the supporting salient points. Under the condition that the tolerance of a certain structural member is unstable, the pressure borne by the plurality of supporting salient points is inconsistent, the supporting salient points at the positions with larger pressure are slightly deformed, and all the supporting salient points can be stably propped against the contact ring, so that the contact ring and the copper-clad ring are tightly pressed, and the stability of temperature measurement is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy charging sockets, and in particular to a compression structure for a charging socket. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and adopt new vehicle-mounted power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles in the current market are mainly powered by electricity, so the vehicle itself is equipped with a charging socket to connect to the charging gun of the charging pile to provide power to the battery inside the vehicle. In order to ensure the safety of the charging process, a temperature sensor is usually installed in the charging socket to monitor the temperature of the charging socket terminal in real time to ensure that overheating problems can be discovered in time during the charging process.

[0003] In the existing charging socket, the annular metal contact surface of the PCB board contacts the terminal, and the upper surface of the charging terminal is pressed by the pressure plate tail cover. However, the parts of the existing pressure plate tail cover that press the terminal are all flat designs. When the tolerance of a certain structural part is unstable, gaps are easily generated when the planes contact with each other, resulting in the terminal and the PCB board cannot be pressed tightly together, resulting in instability in temperature measurement. There is a significant deviation between the measured temperature and the actual temperature, and it is impossible to achieve real-time and accurate detection of the terminal temperature. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a pressing structure for a charging socket.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a clamping structure for a charging socket, comprising an insulator, a pressure plate tail cover is arranged on the rear side of the insulator, a PCB board is arranged in the insulator, 2 power terminals and 7 contact terminals are arranged on the PCB board, the front end of the power terminal is used to connect the charging gun plug, and the rear end is connected to the vehicle body wiring harness, 2 power holes are arranged on the PCB board, copper clad rings are arranged at the power holes, a copper clad layer connected to the copper clad ring is arranged inside the PCB board, a temperature sensor is arranged on the copper clad layer, the two temperature sensors are connected to the 7 contact terminals to a ten-core low-voltage plug-in, the ten-core low-voltage plug-in is connected to the automobile control system through a signal line, a contact ring is arranged on the power terminal, a support tube is arranged on the pressure plate tail cover, a plurality of support protrusions are arranged on the support tube near one end of the PCB board, one side of the contact ring abuts the copper clad layer, and the other side abuts the support protrusion.

[0006] By adopting the above technical scheme, an insulator, a pressure plate tail cover, a PCB board, a power terminal, a contact terminal, a copper-clad ring, a support block, and a support protrusion are arranged, the PCB board is installed in the power contact piece, and then the front end of the power terminal is passed through the power hole, and then the pressure plate tail cover is connected to the insulator, so that one end of the contact ring is abutted against the copper-clad ring, and the other end is abutted against a plurality of support protrusions. In the case of unstable tolerance of a certain structural part, the pressures on the plurality of support protrusions will be inconsistent. The support protrusions are made of plastic material, and the support protrusions at the places with greater pressure are slightly deformed to ensure that all the support protrusions can stably abut against the contact ring, thereby ensuring that the contact ring and the copper-clad ring are tightly pressed together, so that the copper-clad ring and the copper-clad layer have stable heat conduction, and the temperature of the copper-clad layer is measured by a temperature sensor to obtain the temperature of the power terminal, thereby ensuring the stability of temperature measurement.

[0007] Furthermore, a support ring is provided on the insulator, and the support ring abuts against the copper clad ring on a side adjacent to the PCB board.

[0008] By adopting the above technical solution, a support ring is provided on the insulator, and the copper-clad ring is supported by the support ring, ensuring that when the support protrusion presses the contact ring against the copper-clad ring, the position of the copper-clad ring does not change, so that the contact ring is stably in contact with the copper-clad ring.

[0009] Furthermore, one end of the power terminal is a connection block, and a connection groove matching the connection block is provided on the support tube along its length direction.

[0010] By adopting the above technical solution, a connecting block and a connecting groove are provided, and the connecting block is limited by the connecting groove to ensure the stability of the position of the connecting block, thereby ensuring the stability of the connecting block after being connected to the vehicle body wiring harness.

[0011] Furthermore, the rear end of the contact terminal passes through the PCB board, and a support column is provided on the pressure plate tail cover corresponding to the contact terminal, and the end of the support column abuts against the rear end of the contact terminal.

[0012] By adopting the above technical solution, a support column is set on the pressure plate tail cover corresponding to the contact terminal to provide a stable supporting force for the contact terminal, thereby ensuring the stability of the pin terminal of the charging gun when it is inserted into the contact terminal.

[0013] Furthermore, the insulator is provided with a guide column and a fixing column, and the PCB board is correspondingly provided with a guide hole and a fixing hole, the guide column cooperates with the guide hole, and the fixing column cooperates with the fixing hole.

[0014] By adopting the above technical solution, the assembly between the PCB board and the insulator is facilitated by the cooperation between the guide column and the guide hole, and the PCB board and the insulator are fixed together by the cooperation between the fixing column and the fixing hole.

[0015] Furthermore, the front end of the insulator is provided with a hollow plug-in post which is covered on the outside of the power terminal and the contact terminal, and a splitting groove is opened on the lower side of the hollow plug-in post along its length direction.

[0016] By adopting the above technical solution, a hollow plug post is provided to protect the power terminal and the contact terminal to prevent the power terminal and the contact terminal from being exposed, and a split groove is provided on the lower side of the hollow plug post, so that when water enters the front end of the DC socket assembly, the water can flow out from the split groove.

[0017] Furthermore, the power terminal and the contact terminal are both provided with sealing rubber rings, and the outer edges of the sealing rubber rings are in contact with the inner walls of the corresponding hollow plug-in posts.

[0018] By adopting the above technical solution, sealing rubber rings are arranged on the power terminal and the contact terminal, so that water can only flow out from the split groove, thereby preventing water from flowing backward from the hollow plug column to the PCB board and causing damage to the PCB board.

[0019] Furthermore, a buckle is provided on the side of the pressure plate tail cover protruding toward the insulator, and a clamping block is correspondingly provided on the outer wall of the insulator, and the buckle and the clamping block form a clamping fit.

[0020] By adopting the above technical solution, the pressure plate tail cover is fixed on the insulator through the snap fit formed by the snap buckle and the snap block.

[0021] Furthermore, the pressure plate tail cover is provided with a through hole, and the insulator is provided with an assembly hole corresponding to the assembly hole.

[0022] By adopting the above technical solution, the pressure plate tail cover and the insulator are further fixed by passing the self-tapping screws through the through holes and screwing them into the assembly holes.

[0023] In summary, the utility model has the following beneficial effects: in the present application, an insulator, a pressure plate tail cover, a PCB board, a power terminal, a contact terminal, a copper-clad ring, a support block, and a support protrusion are provided, the PCB board is installed in the power contact piece, the front end of the power terminal is passed through the power hole, and the pressure plate tail cover is connected to the insulator, so that one end of the contact ring abuts against the copper-clad ring and the other end abuts against a number of support protrusions. In the case of unstable tolerance of a certain structural part, the pressures on a number of support protrusions will be inconsistent. The support protrusions are made of plastic, and the support protrusions at locations with greater pressure are slightly deformed to ensure that all support protrusions can stably abut against the contact ring, thereby ensuring that the contact ring and the copper-clad ring are tightly pressed together, so that the copper-clad ring and the copper-clad layer can stably conduct heat, and the temperature of the copper-clad layer is measured by a temperature sensor to obtain the temperature of the power terminal, thereby ensuring the stability of the temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the insulator, PCB board, and power terminal part of the embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the insulator part of an embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the tail cover of the pressure plate of the embodiment of the utility model;

[0028] Figure 5 yes Figure 4 A magnified view of part A;

[0029] Figure 6 It is a structural schematic diagram of the PCB board part of the embodiment of the utility model;

[0030] Figure 7 It is a schematic structural diagram of the power terminal part of an embodiment of the utility model.

[0031] In the figure: 10, insulator; 11, support ring; 12, guide column; 13, fixing column; 14, hollow plug-in column; 15, split groove; 16, clamping block; 17, assembly hole; 20, pressure plate tail cover; 21, support tube; 22, support bump; 23, buckle; 24, through hole; 25, connection groove; 26, support column; 30, PCB board; 31, power hole; 32, copper clad ring; 33, copper clad layer; 34, temperature sensor; 35, ten-core low-voltage plug-in; 36, guide hole; 37, fixing hole; 40, power terminal; 41, contact ring; 42, sealing rubber ring; 43, connection block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0033] like Figure 1-7 As shown, the embodiment of the present application discloses a clamping structure for a charging socket, including an insulator 10, a pressure plate tail cover 20, and a PCB board 30. The pressure plate tail cover 20 is arranged at the rear side of the insulator 10, and the PCB board 30 is arranged in the insulator 10. Two power terminals 40 and seven contact terminals are arranged on the PCB board 30. The front end of the power terminal 40 is used to connect the charging gun plug, and the rear end is connected to the vehicle body wiring harness.

[0034] Specifically, two power holes 31 are provided on the PCB board 30, a copper ring 32 is provided at the power hole 31, a copper layer 33 connected to the copper ring 32 is provided inside the PCB board 30, a temperature sensor 34 is provided on the copper layer 33, the two temperature sensors 34 are connected to the seven contact terminals to a ten-core low-voltage plug-in 35, and the ten-core low-voltage plug-in 35 is connected to the vehicle control system through a signal line. A contact ring 41 is provided on the power terminal 40, and a support tube 21 is provided on the pressure plate tail cover 20. A plurality of support protrusions 22 are provided on one end of the support tube 21 adjacent to the PCB board 30. The PCB board 30 is installed in the power contact piece, and then the front end of the power terminal 40 passes through the power hole 31, and then the pressure plate tail cover 20 is connected to the insulator 10, so that one side of the contact ring 41 abuts against the copper clad layer 33 and the other side abuts against the support protrusions 22. In the case of unstable tolerance of a certain structural part, the pressures on the plurality of support protrusions 22 will be inconsistent. The support protrusions 22 are made of plastic. The support protrusions 22 at the location with greater pressure are slightly deformed to ensure that all the support protrusions 22 can stably abut against the contact ring 41, thereby ensuring that the contact ring 41 and the copper clad ring 32 are tightly pressed together, so that the copper clad ring 32 and the copper clad layer 33 are stably thermally conductive, and the temperature of the copper clad layer 33 is measured by the temperature sensor 34 to obtain the temperature of the power terminal 40, thereby ensuring the stability of the temperature measurement. One end of the power terminal 40 is a connecting block 43, and a connecting groove 25 cooperating with the connecting block 43 is opened on the support tube 21 along its length direction. The connecting groove 25 limits the connecting block 43 to ensure the stability of the position of the connecting block 43, thereby ensuring the stability of the connecting block 43 after being connected to the vehicle body wiring harness.

[0035] During the setting, the insulator 10 is provided with a guide column 12 and a fixing column 13, and the PCB board 30 is provided with a guide hole 36 and a fixing hole 37 correspondingly, and the guide column 12 cooperates with the guide hole 36 to facilitate the assembly between the PCB board 30 and the insulator 10. The guide column 12 cooperates with the guide hole 36, and the fixing column 13 cooperates with the fixing hole 37, and the PCB board 30 and the insulator 10 are fixed together by the cooperation of the fixing column 13 and the fixing hole 37. The insulator 10 is provided with a support ring 11, and the support ring 11 is adjacent to the side of the PCB board 30 and abuts against the copper clad ring 32, and the copper clad ring 32 is supported by the support ring 11, so that when the support protrusion 22 presses the contact ring 41 against the copper clad ring 32, the position of the copper clad ring 32 does not change, so that the contact ring 41 stably contacts with the copper clad ring 32.

[0036] A hollow plug-in post 14 is provided at the front end of the insulator 10, which is covered on the outside of the power terminal 40 and the contact terminal to protect the power terminal 40 and the contact terminal and prevent the power terminal 40 and the contact terminal from being exposed. A split groove 15 is provided on the lower side of the hollow plug-in post 14 along its length direction, and when water enters the front end of the DC socket assembly, water can flow out from the split groove 15. Sealing rubber rings 42 are provided on the power terminal 40 and the contact terminal, and the outer edges of the sealing rubber rings 42 are in contact with the corresponding inner walls of the hollow plug-in post 14, so that water can only flow out from the split groove 15, preventing water from flowing backward from the hollow plug-in post 14 to the PCB board 30 and causing damage to the PCB board 30.

[0037] In the specific setting, a buckle 23 is provided on the side of the pressure plate tail cover 20 protruding toward the insulator 10, and a block 16 is correspondingly provided on the outer wall of the insulator 10. The pressure plate tail cover 20 is fixed on the insulator 10 by the snap fit formed by the buckle 23 and the block 16. A through hole 24 is provided on the pressure plate tail cover 20, and an assembly hole 17 is provided on the insulator 10 corresponding to the assembly hole 17. The pressure plate tail cover 20 is further fixed to the insulator 10 by screwing a self-tapping screw through the through hole 24 into the assembly hole 17. The rear end of the contact terminal passes through the PCB board 30, and a support column 26 is provided on the pressure plate tail cover 20 corresponding to the contact terminal. The end of the support column 26 abuts against the rear end of the contact terminal to provide a stable support force for the contact terminal, thereby ensuring the stability of the pin terminal of the charging gun when it is inserted into the contact terminal.

[0038] The use principle of a clamping structure for a charging socket in this embodiment is as follows: during assembly, first align the guide hole 36 of the PCB board 30 with the guide column 12 and the fixing hole 37 with the fixing column 13 to install the PCB board 30 in the insulator 10, then pass the front end of the power terminal 40 through the power hole 31, and then snap the buckle 23 into the clamping block 16 to connect the clamping plate tail cover 20 with the insulator 10. At this time, one end of the contact ring 41 abuts against the copper-clad ring 32 and the other end abuts against a plurality of supporting protrusions 22. In the case of an unstable tolerance of a certain structural component, if The pressure on the dry support protrusions 22 is inconsistent. The support protrusions 22 are made of plastic. The support protrusions 22 at the locations with greater pressure are slightly deformed to ensure that all the support protrusions 22 can stably abut against the contact ring 41, thereby ensuring that the contact ring 41 and the copper-clad ring 32 are tightly pressed together, so that the copper-clad ring 32 and the copper-clad layer 33 can stably conduct heat. The temperature of the copper-clad layer 33 is measured by the temperature sensor 34 to obtain the temperature of the power terminal 40, thereby ensuring the stability of the temperature measurement. The temperature data is then transmitted to the vehicle control system through the ten-core low-voltage plug-in 35 and the signal line.

[0039] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A compression structure for a charging socket, characterized by: The invention comprises an insulator (10), a pressure plate tail cover (20) is arranged at the rear side of the insulator (10), a PCB board (30) is arranged inside the insulator (10), two power terminals (40) and seven contact terminals are arranged on the PCB board (30), the front end of the power terminal (40) is used to connect to the charging gun plug, and the rear end is connected to the vehicle body wiring harness, two power holes (31) are arranged on the PCB board (30), a copper clad ring (32) is arranged at the power hole (31), a copper clad layer (33) connected to the copper clad ring (32) is arranged inside the PCB board (30), and the A temperature sensor (34) is arranged on the copper clad layer (33); two of the temperature sensors (34) are connected to a ten-core low-voltage plug-in (35) through seven contact terminals; the ten-core low-voltage plug-in (35) is connected to a vehicle control system through a signal line; a contact ring (41) is arranged on the power terminal (40); a support tube (21) is arranged on the pressure plate tail cover (20); a plurality of support protrusions (22) are arranged at one end of the support tube (21) adjacent to the PCB board (30); one side of the contact ring (41) is in contact with the copper clad layer (33); and the other side is in contact with the support protrusions (22).

2. The compression structure for a charging socket according to claim 1, characterized in that: A support ring (11) is provided on the insulator (10), and the support ring (11) is in contact with the copper-clad ring (32) on a side adjacent to the PCB board (30).

3. The compression structure for a charging socket according to claim 1 is characterized in that: One end of the power terminal (40) is a connection block (43), and a connection groove (25) matching with the connection block (43) is provided on the support tube (21) along its length direction.

4. The compression structure for a charging socket according to claim 1, characterized in that: The rear end of the contact terminal passes through the PCB board (30), and a support column (26) is provided on the pressure plate tail cover (20) corresponding to the contact terminal, and the end of the support column (26) abuts against the rear end of the contact terminal.

5. The compression structure for a charging socket according to claim 1, characterized in that: A guide column (12) and a fixing column (13) are arranged in the insulator (10), and a guide hole (36) and a fixing hole (37) are correspondingly arranged on the PCB board (30); the guide column (12) cooperates with the guide hole (36), and the fixing column (13) cooperates with the fixing hole (37).

6. The compression structure for a charging socket according to claim 1, characterized in that: The front end of the insulator (10) is provided with a hollow plug-in post (14) which is covered on the power terminal (40) and outside the contact terminal, and a splitting groove (15) is provided on the lower side of the hollow plug-in post (14) along its length direction.

7. The compression structure for a charging socket according to claim 4, characterized in that: The power terminal (40) and the contact terminal are both provided with a sealing rubber ring (42), and the outer edges of the sealing rubber ring (42) are in contact with the inner wall of the corresponding hollow plug-in column (14).

8. The compression structure for a charging socket according to claim 1, characterized in that: A buckle (23) is provided on the side of the pressure plate tail cover (20) protruding in the direction of the insulator (10), and a clamping block (16) is correspondingly provided on the outer wall of the insulator (10), and the buckle (23) and the clamping block (16) form a clamping fit.

9. The compression structure for a charging socket according to claim 1, characterized in that: The pressure plate tail cover (20) is provided with a through hole (24), and the insulator (10) is provided with an assembly hole (17) corresponding to the assembly hole (17).

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