AC / DC charging socket electronic lock

Abstract

The utility model discloses an alternating current and direct current charging socket electronic lock with small volume and large thrust. The technical scheme comprises a shell, a first lock pin and a second lock pin arranged in the shell and a driving mechanism for driving the first lock pin and the second lock pin to move, a first locking rack arranged at the rear end of the first lock pin, a second locking rack arranged at the rear end of the second lock pin, the driving mechanism comprising a motor, a primary gear, a secondary double gear, a tertiary double gear, a quaternary gear, a first transmission shaft gear and a second transmission shaft gear, the primary gear being connected to the output shaft of the motor, the secondary gear being engaged with the primary gear and the tertiary double gear.

Description

Technical Field

[0001] This utility model belongs to the field of new energy electric vehicles, and specifically relates to an electronic lock for an AC / DC charging socket. Background Technology

[0002] An electronic lock for a charging socket is an electronic device used to lock and unlock charging sockets, primarily to prevent operators from accidentally disconnecting the charging connector (commonly known as the charging gun), thereby avoiding the risk of electric shock. In standard AC / DC charging sockets, the AC charging port and DC charging port are independent ports, requiring separate electronic locks for control of the AC and DC charging / discharging guns. This necessitates the use of dedicated locks for different charging scenarios, increasing equipment complexity and cost. Furthermore, early electronic locks generally suffered from bulkiness, insufficient thrust, and failure in emergency unlocking, making them unsuitable for the integration requirements of compact charging stations. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an electronic lock for AC / DC charging sockets that is small in size and has a large thrust.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a housing, a first locking pin and a second locking pin disposed on the housing, and a driving mechanism for driving the first locking pin and the second locking pin to move. The rear end of the first locking pin is provided with a first locking rack, and the rear end of the second locking pin is provided with a second locking rack. The driving mechanism includes a motor, a primary gear, a secondary double gear, a tertiary double gear, a quaternary gear, a first transmission shaft gear, and a second transmission shaft gear. The primary gear is connected to the output shaft of the motor. The secondary double gear meshes with the primary gear and the tertiary double gear. Both ends of the tertiary double gear mesh with the first transmission shaft gear and the quaternary gear, respectively. The other end of the quaternary gear meshes with the second transmission shaft gear. The first transmission shaft gear meshes with the first locking rack, and the second transmission shaft gear meshes with the second locking rack.

[0005] It also includes an emergency unlocking mechanism, which comprises an unlocking rod, a pull rail, a return spring, a wire rope sheath, a pull rope fixing ring, a wire rope, and a buckle. The unlocking rod is located at the bottom of the motor, and its front end is connected to the first locking rack via the pull rail. The return spring is sleeved on the unlocking rod and is used to reset the unlocking rod after it has been unlocked. The wire rope sheath is connected to the housing and fixed by the buckle. The wire rope is placed inside the wire rope sheath, and its front end is connected to the unlocking rod via the pull rope fixing ring.

[0006] It also includes a position confirmation mechanism, which includes a micro switch trigger connected to the end of the first transmission shaft gear, a first micro switch and a second micro switch disposed next to the micro switch trigger. The micro switch trigger has a fan-shaped trigger surface. The rear ends of the first micro switch and the second micro switch are connected to the PCB board. After the first locking pin or the second locking pin is locked, the fan-shaped trigger surface triggers the first micro switch. After the first locking pin or the second locking pin is unlocked, the fan-shaped trigger surface triggers the second micro switch.

[0007] The first transmission shaft gear is provided with a locking limit rib and an unlocking limit rib, and the housing is provided with a positioning rib. After the first locking pin or the second locking pin is locked, the locking limit rib is positioned at the lower end of the positioning rib. After the first locking pin or the second locking pin is unlocked, the locking limit rib is positioned at the upper end of the positioning rib.

[0008] The bottom insert of the housing has a set of signal pins, which are respectively inserted into the motor and the PCB board.

[0009] A signal connector plug that communicates with the signal pin is inserted into the lower end of the housing.

[0010] The housing is provided with a sealing ring that seals to the first locking pin and a sealing cap that covers the sealing ring.

[0011] The pull guide rail is slidably connected to the slide rail at the bottom of the first locking rack via a slide groove, and the rear end of the slide rail is provided with a positioning block that engages with the step at the front end of the slide groove.

[0012] The advantages of the AC / DC charging socket electronic lock of this utility model are as follows:

[0013] 1. It can lock both AC and DC charging docks simultaneously, and is small in size with a large thrust;

[0014] 2. Unlocking limit ribs and locking limit ribs are added to the transmission shaft gear to prevent over-unlocking.

[0015] 3. When the locking pin is engaged, it will not cause the unlocking rope to move, making locking easier and less prone to jamming.

[0016] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the electronic lock for the AC / DC charging socket of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the AC / DC charging socket electronic lock of this utility model;

[0019] Figure 3 This is a cross-sectional view of the electronic lock for the AC / DC charging socket of this utility model;

[0020] Figure 4 This is an exploded view of the electronic lock for the AC / DC charging socket of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the first transmission shaft gear of this utility model;

[0022] Figure 6 This is a schematic diagram of the connection between the first locking rack and the pull guide rail of this utility model. Detailed Implementation

[0023] Reference Figure 1-6 As shown, the electronic lock for AC / DC charging sockets of this utility model includes a housing 1, a first locking pin 2 and a second locking pin 3 disposed on the housing 1, and a drive mechanism 4 for driving the first locking pin 2 and the second locking pin 3 to move. The first locking pin 2 is used to lock the DC charging gun, and the second locking pin 3 is used to lock the AC charging gun. A first locking rack 5 is provided at the rear end of the first locking pin 2, and a second locking rack 6 is provided at the rear end of the second locking pin 3. The drive mechanism 4 includes a motor 7, a primary gear 8, a secondary double gear 9, a tertiary double gear 10, a quaternary gear 11, a first transmission shaft gear 12, and a second transmission shaft gear 13. The primary gear 8 is connected to the output shaft of the motor 7. The secondary double gear 9 meshes with the primary gear 8 and the tertiary double gear 10. Both ends of the tertiary double gear 10 mesh with the first transmission shaft gear 12 and the quaternary gear 11, respectively. The other end of the quaternary gear 11 meshes with the second transmission shaft gear 13. The first drive shaft gear 12 meshes with the first locking rack 5, and the second drive shaft gear 13 meshes with the second locking rack 6.

[0024] Preferably, the device further includes an emergency unlocking mechanism 15, which comprises an unlocking rod 16, a pull rail 17, a return spring 18, a wire rope sheath 19, a pull rope fixing ring 20, a wire rope 21, and a buckle 22. The unlocking rod 16 is located at the bottom of the motor 7, and its front end is connected to the first locking rack 5 via the pull rail 17. The pull rail 17 engages with a sliding groove inside the housing 1. The return spring 18 is sleeved on the unlocking rod 16, with its front end abutting against the pull rail 17 and its rear end abutting against the housing 1, for resetting the unlocking rod 16 after unlocking. The wire rope sheath 19 is connected to the housing 1 and fixed by the buckle 22. Specifically: the front end of the wire rope protective tube 19 is provided with an annular groove, and the buckle 22 is provided with a U-shaped latch. When the annular groove of the wire rope protective tube 19 is inserted into the housing 1, the buckle 22 is also inserted into the housing 1 and is engaged with the annular groove through the U-shaped latch, thus fixing the wire rope protective tube 19. The wire rope 21 is placed inside the wire rope protective tube 19, and its front end is connected to the unlocking lever 16 through the pull rope fixing ring 20. When an abnormality occurs during unlocking and normal unlocking fails, the steel wire rope 21 can be pulled to move the unlocking lever 16 backward. The unlocking lever 16, through the pull of the guide rail 17, drives the first locking pin 2 on the first locking rack 5 and the second locking pin 3 on the second locking rack 6 to move backward. That is, the first transmission shaft gear 12 and the second transmission shaft gear 13 rotate in the unlocking direction. The first transmission shaft gear 12 and the second transmission shaft gear 13 simultaneously drive the other gears to move backward to the unlocking position in sequence. After unlocking is completed, the steel wire rope 21 is released, and the compression force of the return spring 18 restores the unlocking lever 16 and the steel wire rope 21 to the position before being pulled.

[0025] Preferably, the system further includes a position confirmation mechanism 23. The position confirmation mechanism 23 includes a micro switch trigger 24 connected to the end of the first transmission shaft gear 12, a first micro switch 25 and a second micro switch 26 disposed beside the micro switch trigger 24. The micro switch trigger 24 has a fan-shaped trigger surface 27. The rear ends of the first micro switch 25 and the second micro switch 26 are connected to a PCB board 28. After the first locking pin 2 or the second locking pin 3 is locked, the fan-shaped trigger surface 27 triggers the first micro switch 25. After the first locking pin 2 or the second locking pin 3 is unlocked, the fan-shaped trigger surface 27 triggers the second micro switch 26. This achieves confirmation of the locked and unlocked positions.

[0026] Preferably, the first transmission shaft gear 12 is provided with a locking limiting rib 29 and an unlocking limiting rib 30, and the housing 1 is provided with a positioning rib 31. After the first locking pin 2 or the second locking pin 3 is locked, the locking limiting rib 29 is positioned at the lower end of the positioning rib 31. After the first locking pin 2 or the second locking pin 3 is unlocked, the locking limiting rib 29 is positioned at the upper end of the positioning rib 31. This is to prevent over-unlocking or over-locking, which could cause emergency unlocking failure.

[0027] Preferably, the bottom insert of the housing 1 has a set of signal pins 32, which are respectively inserted into the motor 7 and the PCB board 28. A signal connector plug 33, communicating with the signal pins 32, is inserted into the lower end of the housing 1. The PCB board 28 transmits position signals through the signal pins 32 and the signal connector plug 33, enabling quick wiring.

[0028] Preferably, the housing 1 is provided with a sealing ring 34 that seals against the first locking pin 2 and a sealing cap 35 that covers the sealing ring 34, so as to serve as a waterproof function.

[0029] Preferably, the pull guide rail 17 is slidably connected to the slide rail 37 at the bottom of the first locking rack 5 via a slide groove 36, and the rear end of the slide rail 37 is provided with a positioning block 39 that engages with the step 38 at the front end of the slide groove 36. This structure ensures that when the locking pin is engaged, it does not cause the unlocking pull rope to move.

[0030] As stated above, this is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An electronic lock for an AC / DC charging socket, comprising a housing (1), a first locking pin (2) and a second locking pin (3) disposed on the housing (1), and a driving mechanism (4) for moving the first locking pin (2) and the second locking pin (3), wherein a first locking rack (5) is provided at the rear end of the first locking pin (2), and a second locking rack (6) is provided at the rear end of the second locking pin (3), characterized in that: The drive mechanism (4) includes a motor (7), a primary gear (8), a secondary double gear (9), a tertiary double gear (10), a quaternary gear (11), a first transmission shaft gear (12), and a second transmission shaft gear (13); the primary gear (8) is connected to the output shaft of the motor (7); the secondary double gear (9) meshes with the primary gear (8) and the tertiary double gear (10); both ends of the tertiary double gear (10) mesh with the first transmission shaft gear (12) and the quaternary gear (11), respectively; the other end of the quaternary gear (11) meshes with the second transmission shaft gear (13); the first transmission shaft gear (12) meshes with the first locking rack (5), and the second transmission shaft gear (13) meshes with the second locking rack (6).

2. The AC / DC charging socket electronic lock according to claim 1, characterized in that: It also includes an emergency unlocking mechanism (15), which includes an unlocking lever (16), a pull rail (17), a reset spring (18), a wire rope sheath (19), a rope fixing ring (20), a wire rope (21), and a buckle (22). The unlocking lever (16) is placed at the bottom of the motor (7), and its front end is connected to the first locking rack (5) through the pull rail (17). The reset spring (18) is sleeved on the unlocking lever (16) and is used to reset the unlocking lever (16) after it is unlocked. The wire rope sheath (19) is connected to the housing (1) and fixed by the buckle (22). The wire rope (21) is placed inside the wire rope sheath (19), and its front end is connected to the unlocking lever (16) through the rope fixing ring (20).

3. The electronic lock for AC / DC charging sockets according to claim 1, characterized in that: It also includes a position confirmation mechanism (23), which includes a micro switch trigger (24) connected to the end of the first transmission shaft gear (12), a first micro switch (25) and a second micro switch (26) located next to the micro switch trigger (24). The micro switch trigger (24) has a fan-shaped trigger surface (27). The rear ends of the first micro switch (25) and the second micro switch (26) are connected to the PCB board (28). After the first locking pin (2) or the second locking pin (3) is locked, the fan-shaped trigger surface (27) triggers the first micro switch (25). After the first locking pin (2) or the second locking pin (3) is unlocked, the fan-shaped trigger surface (27) triggers the second micro switch (26).

4. The AC / DC charging socket electronic lock according to claim 1, characterized in that: The first transmission shaft gear (12) is provided with a locking limit rib (29) and an unlocking limit rib (30). The housing (1) is provided with a positioning rib (31). After the first locking pin (2) or the second locking pin (3) is locked, the locking limit rib (29) is positioned at the lower end of the positioning rib (31). After the first locking pin (2) or the second locking pin (3) is unlocked, the locking limit rib (29) is positioned at the upper end of the positioning rib (31).

5. The AC / DC charging socket electronic lock according to claim 3, characterized in that: The bottom insert of the housing (1) has a set of signal pins (32), which are respectively inserted into the motor (7) and the PCB board (28).

6. The AC / DC charging socket electronic lock according to claim 5, characterized in that: The lower end of the housing (1) is connected to a signal connector plug (33) that communicates with the signal pin (32).

7. The AC / DC charging socket electronic lock according to claim 1, characterized in that: The housing (1) is provided with a sealing ring (34) that seals the first locking pin (2) and a sealing cap (35) that covers the sealing ring (34).

8. The AC / DC charging socket electronic lock according to claim 2, characterized in that: The pull guide rail (17) is slidably connected to the slide rail (37) at the bottom of the first locking rack (5) via the slide groove (36). The rear end of the slide rail (37) is provided with a positioning block (39) that is positioned and engaged with the step (38) at the front end of the slide groove (36).

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