Terminal structure and charging gun

Abstract

The utility model belongs to the technical field of charging guns, and particularly relates to a terminal structure and a charging gun, and the terminal structure comprises a first charging terminal, a second charging terminal, a circuit board, and a terminal seat. The terminal seat is provided with a first gap hole and a second gap hole which are distributed at an interval, the inner wall of the first gap hole is provided with a first annular limiting arm, and the inner wall of the second gap hole is provided with a second annular limiting arm; the first charging terminal is provided with a first annular blocking arm, and the second charging terminal is provided with a second annular blocking arm. The first charging terminal is clamped in the first notch hole, and the first annular limiting arm abuts against the first annular blocking arm. The first charging terminal is clamped in the first notch hole, the second charging terminal is clamped in the second notch hole, the second annular limiting arm abuts against the second annular blocking arm, and the first charging terminal, the second charging terminal and the terminal base are easy to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of charging guns, and in particular relates to a terminal structure and a charging gun. Background Art

[0002] The main charging facilities for electric vehicles include charging piles, charging guns, charging sockets, and in-vehicle high-voltage connectors. A charging gun is a charging device installed on a charging pile. The user unplugs the charging gun from the charging pile and inserts it into the charging port of the electric vehicle, allowing the charging pile to charge the electric vehicle through the charging gun.

[0003] The charging terminal is an important component of the charging gun. In the prior art, the charging terminal is usually directly plugged into the terminal seat from the rear end, which has the technical problem of inconvenient disassembly and assembly. Utility Model Content

[0004] The utility model solves the technical problem in the prior art that charging terminals on a charging gun are inconvenient to assemble and disassemble, and provides a terminal structure and a charging gun.

[0005] In view of the above problems, an embodiment of the present invention provides a terminal structure, comprising a first charging terminal, a second charging terminal, a circuit board, and a terminal base; the terminal base is provided with a first notch hole and a second notch hole spaced apart from each other, a first annular limiting arm is provided on the inner wall of the first notch hole, and a second annular limiting arm is provided on the inner wall of the second notch hole; the first charging terminal is provided with a first annular blocking arm, and the second charging terminal is provided with a second annular blocking arm;

[0006] The first charging terminal is clamped in the first notch hole, and the first annular limiting arm abuts against the first annular blocking arm;

[0007] The second charging terminal is clamped in the second notch hole, and the second annular limiting arm abuts against the second annular blocking arm;

[0008] The circuit board is mounted on the terminal base and is electrically connected to both the first charging terminal and the second charging terminal.

[0009] Optionally, the terminal structure also includes a first temperature sensor and a second temperature sensor, the first charging terminal is provided with a first plug hole, and the second charging terminal is provided with a second plug hole; the first temperature sensor is plugged into the first plug hole and electrically connected to the circuit board, and the second temperature sensor is plugged into the second plug hole and electrically connected to the circuit board.

[0010] Optionally, the terminal seat is provided with a first arc-shaped convex portion arranged around the first notch hole, and a second arc-shaped convex portion arranged around the second notch hole;

[0011] Two opposite sides of the circuit board are respectively in contact with the first arc-shaped protrusion and the second arc-shaped protrusion.

[0012] Optionally, the terminal structure further includes a first cable electrically connected to the circuit board, and the terminal seat is further provided with a wire clamping recess, and the first cable is clamped in the wire clamping recess.

[0013] Optionally, a first cooling channel is provided on the first charging terminal; the terminal structure also includes a first water inlet pipe, a first water outlet pipe and a second cable; the first water inlet pipe and the first water outlet pipe are both connected to the first charging terminal, and the first inner hole of the first water inlet pipe is connected to the inlet of the first cooling channel, and the second inner hole of the first water outlet pipe is connected to the outlet of the first cooling channel; the second cable is electrically connected to the first charging terminal after passing through the second inner hole.

[0014] Optionally, a second cooling channel is provided on the second charging terminal; the terminal structure also includes a second water inlet pipe, a second water outlet pipe and a third cable; the second water inlet pipe and the second water outlet pipe are both connected to the second charging terminal, and the third inner hole of the second water inlet pipe is connected to the inlet of the second cooling channel, and the fourth inner hole of the second water outlet pipe is connected to the outlet of the second cooling channel; the third cable is electrically connected to the second charging terminal after passing through the fourth inner hole.

[0015] Another embodiment of the present invention further provides a charging gun, comprising a gun housing, a gun head, and the above-mentioned terminal structure; the gun housing is provided with an internal space, and the gun head is provided with a first through hole and a second through hole distributed at intervals; the gun head is mounted on the gun housing, and the terminal structure is mounted in the internal space, the first charging terminal extends into the first through hole, and the second charging terminal extends into the second through hole.

[0016] Optionally, an annular plug-in groove is provided between the terminal seat and the inner wall of the internal space, and an annular plug-in portion inserted into the annular plug-in groove is provided on the gun head.

[0017] Optionally, an annular groove is further provided on the gun head, and the charging gun further comprises a sealing ring installed in the annular groove, and the sealing ring abuts against the gun housing.

[0018] Optionally, an end of the gun housing away from the gun head is provided with a port connected to the internal space;

[0019] The charging gun further includes a fourth cable, a first locking block, a second locking block, and an end cap having a third through hole; the first locking block is connected to the first locking block, and a fourth through hole is formed between the first locking block and the second locking block;

[0020] The end cover is further provided with an annular stopper extending toward the center of the third through hole; the end cover is mounted on the gun housing, the first locking block and the second locking block are both mounted in the third through hole, and the opposite ends of the first locking block and the second locking block are respectively abutted against the annular stopper and the gun housing; the fourth cable passes through the third through hole, the fourth through hole and the port and then extends into the internal space.

[0021] In the present invention, the first charging terminal can be pressed into the first notch from above, and pushed axially until the first annular limiting arm abuts the first annular blocking arm. At this time, the first charging terminal can be firmly fixed in the first notch; the second charging terminal can be pressed into the second notch from above, and pushed axially until the second annular limiting arm abuts the second annular blocking arm. At this time, the second charging terminal can be firmly fixed in the second notch. In the present invention, the first and second charging terminals are simple to assemble and disassemble from the terminal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 A schematic structural diagram of a terminal structure provided in one embodiment of the present utility model;

[0024] Figure 2 A schematic diagram of a first charging terminal structure of a terminal structure provided in one embodiment of the present utility model;

[0025] Figure 3 A schematic structural diagram of a terminal seat of a terminal structure provided by an embodiment of the present utility model;

[0026] Figure 4 A schematic diagram of the structure of a charging gun provided in one embodiment of the present utility model;

[0027] Figure 5 A cross-sectional view of a charging gun provided in one embodiment of the present utility model;

[0028] Figure 6 A schematic diagram of the structure of the first locking block and the second locking block of the charging gun provided by one embodiment of the utility model installed in the end cover;

[0029] Figure 7 This is a structural diagram of a charging gun provided by an embodiment of the present invention, in which the first locking block is installed in the end cover.

[0030] The reference numerals in the specification are as follows:

[0031] 1. Terminal structure; 11. First charging terminal; 111. First annular blocking arm; 112. First cooling channel; 12. Second charging terminal; 13. Circuit board; 14. Terminal seat; 141. First notch hole; 142. Second notch hole; 143. First annular limiting arm; 144. Second annular limiting arm; 145. First arc-shaped convex portion; 146. Second arc-shaped convex portion; 147. Wire clamping recess; 15. First temperature sensor; 16. Second temperature sensor; 17. First water inlet pipe; 18. First water outlet pipe; 2. Gun housing; 21. Internal space; 22. Annular plug-in groove; 3. Gun head; 31. First through hole; 32. Second through hole; 33. Annular plug-in portion; 4. Fourth cable; 5. First locking block; 6. Second locking block; 7. End cover; 71. Third through hole; 72. Annular blocking portion. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It should be understood that the terms "upper", "lower", "left", "right", "front", "back", "middle", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0034] like Figures 1 to 3 As shown, an embodiment of the present invention provides a terminal structure 1, including a first charging terminal 11, a second charging terminal 12, a circuit board 13 and a terminal seat 14; the terminal seat 14 is provided with a first notch hole 141 and a second notch hole 142 distributed at intervals, the inner wall of the first notch hole 141 is provided with a first annular limiting arm 143, and the inner wall of the second notch hole 142 is provided with a second annular limiting arm 144; the first charging terminal 11 is provided with a first annular blocking arm 111, and the second charging terminal 12 is provided with a second annular blocking arm (not shown in the figure); it can be understood that openings are provided above the first notch hole 141 and the second notch hole 142, the first annular limiting arm 143 protrudes toward the center of the first notch hole 141, and the second annular limiting arm 144 protrudes toward the center of the second notch hole 142.

[0035] The first charging terminal 11 is clamped in the first notch 141, and the first annular limiting arm 143 abuts against the first annular blocking arm 111. It is understandable that the first charging terminal 11 can be pressed into the first notch 141 from above and pushed axially until the first annular limiting arm 143 abuts against the first annular blocking arm 111. At this time, the first charging terminal 11 can be firmly clamped in the first notch 141. In the present invention, the first charging terminal 11 is easy to assemble and disassemble from the terminal base 14.

[0036] The second charging terminal 12 is clamped in the second notch 142, and the second annular limiting arm 144 abuts against the second annular blocking arm. It can be understood that the second charging terminal 12 can be pressed into the second notch 142 from above and pushed axially until the second annular limiting arm 144 abuts against the second annular blocking arm. At this time, the second charging terminal 12 can be firmly clamped in the second notch 142. In the present invention, the second charging terminal 12 is easy to assemble and disassemble from the terminal base 14.

[0037] The circuit board 13 is mounted on the terminal base 14 and is electrically connected to both the first charging terminal 11 and the second charging terminal 12 .

[0038] In one embodiment, if Figure 1 and Figure 2 As shown, the terminal structure 1 further includes a first temperature sensor 15 and a second temperature sensor 16. The first charging terminal 11 is provided with a first insertion hole, and the second charging terminal 12 is provided with a second insertion hole. The first temperature sensor 15 is inserted into the first insertion hole and electrically connected to the circuit board 13, and the second temperature sensor 16 is inserted into the second insertion hole and electrically connected to the circuit board 13. It can be understood that the first temperature sensor 15 can directly detect the temperature of the first charging terminal 11, improving the detection accuracy of the first temperature sensor 15 for the first charging terminal 11; the second temperature sensor 16 can directly detect the temperature of the second charging terminal 12, improving the detection accuracy of the second temperature sensor 16 for the second charging terminal 12.

[0039] In one embodiment, if Figure 1 and Figure 3As shown, the terminal seat 14 is provided with a first arc-shaped protrusion 145 arranged around the first notch hole 141, and a second arc-shaped protrusion 146 arranged around the second notch hole 142; it can be understood that the first arc-shaped protrusion 145 surrounds the first charging terminal 11, further ensuring the stability of the first charging terminal 11 being clamped in the first notch hole 141; the second arc-shaped protrusion 146 surrounds the second charging terminal 12, further ensuring the stability of the second charging terminal 12 being clamped in the second notch hole 142.

[0040] The opposite sides of the circuit board 13 are respectively in contact with the first arc-shaped protrusion 145 and the second arc-shaped protrusion 146. It can be understood that a portion of the circuit board 13 is clamped between the first arc-shaped protrusion 145 and the second arc-shaped protrusion 146, further ensuring the stability of the circuit board 13 installed on the terminal block 14.

[0041] In one embodiment, if Figure 1 As shown, the terminal structure 1 further includes a first cable (not shown) electrically connected to the circuit board 13. The terminal base 14 is further provided with a cable-locking recess 147, and the first cable is locked in the cable-locking recess 147. It is understandable that multiple first cables and cable-locking recesses can be provided according to actual needs, and the first cable is locked in the cable-locking recess to avoid accidents in which the first cable becomes tangled.

[0042] In one embodiment, if Figure 1 and Figure 2 As shown, the first charging terminal 11 is provided with a first cooling channel 112; the terminal structure 1 also includes a first water inlet pipe 17, a first water outlet pipe 18 and a second cable (not shown in the figure); the first water inlet pipe 17 and the first water outlet pipe 18 are both connected to the first charging terminal 11, and the first inner hole of the first water inlet pipe 17 is connected to the inlet of the first cooling channel 112, and the second inner hole of the first water outlet pipe 18 is connected to the outlet of the first cooling channel 112; the second cable is electrically connected to the first charging terminal 11 after passing through the second inner hole.

[0043] Specifically, the end of the first water inlet pipe 17 away from the first cooling channel 112 is connected to the outlet of an external liquid supply device, and the end of the first water outlet pipe 18 away from the first cooling channel 112 is connected to the inlet of the external liquid supply device. The external liquid supply device can flow coolant into the first cooling channel 112 through the first water inlet pipe 17. After the coolant cools the first charging terminal 11 in the first cooling channel 112, it flows back to the external liquid supply device through the first water outlet pipe 18. The coolant in the first water outlet pipe 18 can cool the second cable. In this embodiment, the first charging terminal 11 and the second cable have good cooling efficiency, extending the service life of the terminal structure 1.

[0044] In one embodiment, a second cooling channel is provided on the second charging terminal 12; the terminal structure 1 also includes a second water inlet pipe, a second water outlet pipe and a third cable; the second water inlet pipe and the second water outlet pipe are both connected to the second charging terminal 12, and the third inner hole of the second water inlet pipe is connected to the inlet of the second cooling channel, and the fourth inner hole of the second water outlet pipe is connected to the outlet of the second cooling channel; the third cable is electrically connected to the second charging terminal 12 after passing through the fourth inner hole.

[0045] Specifically, the end of the second water inlet pipe away from the second cooling channel is connected to the outlet of the external liquid supply device, and the end of the second water outlet pipe away from the second cooling channel is connected to the inlet of the external liquid supply device. The external liquid supply device can flow coolant into the second cooling channel through the second water inlet pipe. After the coolant cools the second charging terminal 12 in the second cooling channel, it returns to the external liquid supply device through the second water outlet pipe. The coolant in the second water outlet pipe can cool the third cable. In this embodiment, the second charging terminal 12 and the third cable have good cooling efficiency, extending the service life of the terminal structure 1.

[0046] like Figure 4 and Figure 5As shown, another embodiment of the present invention further provides a charging gun, comprising a gun housing 2, a gun head 3, and the aforementioned terminal structure 1; the gun housing 2 is provided with an internal space 21, and the gun head 3 is provided with a first through-hole 31 and a second through-hole 32 spaced apart; the gun head 3 is mounted on the gun housing 2, and the terminal structure 1 is mounted in the internal space 21, with the first charging terminal 11 extending into the first through-hole 31, and the second charging terminal 12 extending into the second through-hole 32. It is understandable that one end of the first charging terminal 11 extends into the first through-hole 31, and the other end of the first charging terminal 11 extends into the internal space 21; one end of the second charging terminal 12 extends into the second through-hole 32, and the other end of the second charging terminal 12 extends into the internal space 21.

[0047] In the present invention, after the terminal structure 1 is assembled, the terminal structure 1 is installed in the internal space 21, and finally the gun head 3 is installed on the gun housing 2. The charging gun has a simple structure and is easy to assemble and disassemble.

[0048] In one embodiment, if Figure 5 As shown, an annular insertion groove 22 is provided between the terminal base 14 and the inner wall of the internal space 21, and an annular insertion portion 33 is provided on the gun head 3 to be inserted into the annular insertion groove 22. It can be understood that the annular insertion portion 33 extends toward the rear of the gun head 3 and is inserted into the annular insertion groove 22, ensuring that the gun head 3 is firmly mounted on the gun housing 2.

[0049] In one embodiment, the gun head 3 is further provided with an annular groove (not shown in the figure), and the charging gun further includes a sealing ring (not shown in the figure) mounted in the annular groove, the sealing ring abutting against the gun housing 2. It is understood that the sealing ring can seal the connection between the gun head 3 and the gun housing 2, ensuring the sealing performance of the charging gun.

[0050] In one embodiment, if Figure 4 、 Figure 6 as well as Figure 7 As shown, the end of the gun housing 2 away from the gun head 3 is provided with a port connected to the internal space 21;

[0051] The charging gun also includes a fourth cable 4, a first locking block 5, a second locking block 6 and an end cover 7 provided with a third through hole 71; the first locking block 5 is connected to the first locking block 5, and a fourth through hole is provided between the first locking block 5 and the second locking block 6; it can be understood that the first locking block 5 and the second locking block 6 can be fixedly connected by screws, bolts, etc., and the first locking block 5 and the second locking block 6 can press the fourth cable 4 from the left and right sides, or the upper and lower sides.

[0052] The end cap 7 is further provided with an annular stopper 72 extending toward the center of the third through hole 71. The end cap 7 is mounted on the gun housing 2, and the first locking block 5 and the second locking block 6 are both mounted in the third through hole 71. The opposing ends of the first locking block 5 and the second locking block 6 respectively abut against the annular stopper 72 and the gun housing 2. The fourth cable 4 passes through the third through hole 71, the fourth through hole, and the port, and then extends into the internal space 21. It is understood that the annular stopper 72 is provided at the end of the end cap 7, and the end cap 7 can be fixed to the gun housing 2 using screws, bolts, or the like. The fourth cable 4 can be electrically connected to the second cable, the third cable, and the circuit board 13.

[0053] In this embodiment, after the first locking block 5 and the second locking block 6 clamp the fourth cable 4 and are connected to each other, the end cover 7 is installed on the gun case 2. The opposite ends of the first locking block 5 and the second locking block 6 are respectively in contact with the annular stop 72 and the gun case 2, so that the end cover 7 can fix the first locking block 5 and the second locking block on the gun case 2, avoiding the accident of the first locking block 5 and the second locking block 6 being separated from the gun case 2, ensuring the tightness of the fourth cable 4 in the internal space 21, and avoiding the accident of the cable falling off from the gun case 2.

[0054] In addition, the first locking block 5 and the second locking block 6 can clamp the fourth cable 4, and the end cover 7 can fix the first locking block 5 and the second locking block 6 on the gun housing 2, making the charging gun easy to assemble and disassemble.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A terminal structure, characterized in that: The device comprises a first charging terminal, a second charging terminal, a circuit board, and a terminal base; the terminal base is provided with a first notch hole and a second notch hole spaced apart from each other; a first annular limiting arm is provided on the inner wall of the first notch hole, and a second annular limiting arm is provided on the inner wall of the second notch hole; the first charging terminal is provided with a first annular blocking arm, and the second charging terminal is provided with a second annular blocking arm; The first charging terminal is clamped in the first notch hole, and the first annular limiting arm abuts against the first annular blocking arm; The second charging terminal is clamped in the second notch hole, and the second annular limiting arm abuts against the second annular blocking arm; The circuit board is mounted on the terminal base and is electrically connected to both the first charging terminal and the second charging terminal.

2. The terminal structure according to claim 1, wherein: The terminal structure also includes a first temperature sensor and a second temperature sensor. The first charging terminal is provided with a first plug hole, and the second charging terminal is provided with a second plug hole. The first temperature sensor is plugged into the first plug hole and electrically connected to the circuit board, and the second temperature sensor is plugged into the second plug hole and electrically connected to the circuit board.

3. The terminal structure according to claim 1, wherein: The terminal seat is provided with a first arc-shaped convex portion arranged around the first notch hole, and a second arc-shaped convex portion arranged around the second notch hole; Two opposite sides of the circuit board are respectively in contact with the first arc-shaped protrusion and the second arc-shaped protrusion.

4. The terminal structure according to claim 3, characterized in that: The terminal structure further includes a first cable electrically connected to the circuit board. The terminal seat is further provided with a wire clamping recess, and the first cable is clamped in the wire clamping recess.

5. The terminal structure according to claim 1, wherein: A first cooling channel is provided on the first charging terminal; the terminal structure also includes a first water inlet pipe, a first water outlet pipe and a second cable; the first water inlet pipe and the first water outlet pipe are both connected to the first charging terminal, and the first inner hole of the first water inlet pipe is connected to the inlet of the first cooling channel, and the second inner hole of the first water outlet pipe is connected to the outlet of the first cooling channel; the second cable is electrically connected to the first charging terminal after passing through the second inner hole.

6. The terminal structure according to claim 1, wherein: A second cooling channel is provided on the second charging terminal; the terminal structure also includes a second water inlet pipe, a second water outlet pipe and a third cable; the second water inlet pipe and the second water outlet pipe are both connected to the second charging terminal, and the third inner hole of the second water inlet pipe is connected to the inlet of the second cooling channel, and the fourth inner hole of the second water outlet pipe is connected to the outlet of the second cooling channel; the third cable is electrically connected to the second charging terminal after passing through the fourth inner hole.

7. A charging gun, characterized in that: It comprises a gun housing, a gun head and a terminal structure as described in any one of claims 1 to 6; the gun housing is provided with an internal space, and the gun head is provided with a first through hole and a second through hole distributed at intervals; the gun head is installed on the gun housing, and the terminal structure is installed in the internal space, the first charging terminal extends into the first through hole, and the second charging terminal extends into the second through hole.

8. The charging gun according to claim 7, characterized in that: An annular plug-in groove is provided between the terminal seat and the inner wall of the internal space, and an annular plug-in portion inserted into the annular plug-in groove is provided on the gun head.

9. The charging gun according to claim 7, characterized in that: The gun head is further provided with an annular groove, and the charging gun further comprises a sealing ring installed in the annular groove, and the sealing ring abuts against the gun housing.

10. The charging gun according to claim 7, characterized in that: An end of the gun housing away from the gun head is provided with a port communicating with the internal space; The charging gun further includes a fourth cable, a first locking block, a second locking block, and an end cap having a third through hole; the first locking block is connected to the first locking block, and a fourth through hole is formed between the first locking block and the second locking block; The end cover is further provided with an annular stopper extending toward the center of the third through hole; the end cover is mounted on the gun housing, the first locking block and the second locking block are both mounted in the third through hole, and the opposite ends of the first locking block and the second locking block are respectively abutted against the annular stopper and the gun housing; the fourth cable passes through the third through hole, the fourth through hole and the port and then extends into the internal space.

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