Safety device of charging quick-plug connector

Abstract

The utility model discloses a safety device of a charging quick-plug connector, and belongs to the technical field of connector safety. A safety device of a charging quick-plug connector is installed at the lower end of a charging gun, and the charging gun is used for being connected with a connecting base in an inserted mode. The safety device comprises an abutting piece and a safety mechanism. The abutting piece comprises a first abutting plate and a second abutting plate which are located on the two sides of the connecting base respectively. A limiting hole is formed in the first abutting plate; the safety mechanism comprises a first safety cavity and a second safety cavity; a safety catch is slidably arranged in the first safety cavity; a safety abutting switch is arranged in the second safety cavity in a sliding manner; when the charging gun is not inserted into the connecting base, the safety catch is located in the first safety cavity, and the safety abutting switch protrudes out of the second safety cavity. The charging gun is inserted into the connecting seat; the safety catch and the safety abutting switch are in mutual linkage, and the safety catch protrudes out of the first safety cavity. The connecting piece can be locked and fixed in a safe mode in a contact electric control mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of connector insurance, and more specifically relates to a insurance device for a charging quick-plug connector. Background Art

[0002] Civilian charging guns are mostly used to charge new energy vehicles, and mining charging guns are mostly used to charge flameproof new energy vehicles in coal mines and other charging equipment in coal mines.

[0003] At present, the charging gun includes a socket and a plug. The plug is connected to the charging pile, and the socket is installed on the charging device. The plug can be inserted into the socket for charging. Since the mining charging gun is mainly used in coal mines, there are explosive gas mixtures such as coal dust and methane around, so the mining charging gun needs to have explosion-proof function.

[0004] For example, the Chinese patent number is CN202321805250.3, a civilian mining fast-switching flameproof charging gun, published on 2023-12-15. This utility model discloses a locking mechanism, which locks the charging gun and the connecting socket by pulling the locking mechanism. However, the use of the locking mechanism of this utility model requires manual operation, which brings certain cumbersomeness to the operation of the device and is not convenient to use. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a safety device for a charging quick-plug connector, which can realize safety locking and fixing of a connecting piece by means of contact electrical control.

[0006] The utility model discloses a safety device of a charging quick-plug connector, wherein the safety device is installed at the lower end of a charging gun, and the charging gun is used to be plugged into a connecting socket, one end of the connecting socket is used to connect an electric box, and the other end of the connecting socket is plugged into the charging gun; the safety device comprises an abutment and a safety mechanism; the abutment is connected to the connecting socket; the abutment comprises a first abutment plate and a second abutment plate respectively located on both sides of the connecting socket; a limiting hole is provided in the first abutment plate; the safety mechanism comprises a first safety cavity and a second safety cavity; a safety bolt is slidably provided inside the first safety cavity; a safety abutment switch is slidably provided inside the second safety cavity; when the charging gun is not plugged into the connecting socket, the safety bolt is located in the first safety cavity, and the safety abutment switch protrudes out of the second safety cavity; when the charging gun is plugged into the connecting socket, the safety abutment switch abuts against the second abutment plate to make the safety abutment switch abut into the second safety cavity; the safety bolt and the safety abutment switch are linked to each other, so that the safety bolt protrudes out of the first safety cavity and is plugged into the limiting hole of the first abutment plate.

[0007] As a further improvement of the utility model, the safety mechanism also includes a sensor device, a controller and a drive device; the sensor device is located at the tail end of the second safety cavity to obtain the position information of the safety abutment switch in the second safety cavity; the sensor device is electrically connected to the controller to receive the signal sent by the sensor device; the output end of the drive device is fixedly connected to the safety bolt, and the output end of the drive device is electrically connected to the controller to receive the operation signal sent by the controller and operate the safety bolt.

[0008] As a further improvement of the present invention, the size of the safety pin matches the size of the limiting hole; when the charging gun is plugged into the connecting socket, the moving trajectory of the safety mechanism remains parallel to the middle height of the first abutment plate and the second abutment plate; the moving trajectory of the safety pin is always parallel to the limiting hole in the middle of the first abutment plate.

[0009] As a further improvement of the utility model, through holes are provided on both sides of the connecting seat; the abutment member is rotatably connected to the connecting member; the connecting member is embedded in the through holes on both sides of the connecting seat so that the abutment member is rotatably connected to the connecting seat.

[0010] As a further improvement of the present utility model, the abutment and the connecting seat are connected by a connecting member; the abutment is a booster handle, and the inner side wall of the booster handle is provided with an assisting slide groove; the opening of the assisting slide groove is located at the lower edge of the booster handle; a booster block is provided at the outer end of the charging gun; the opening of the assisting slide groove is larger than the size of the booster block, so that the booster block is located within the range of the assisting slide groove opening when the booster handle is pressed down; when the booster handle is pressed down for installation, the booster block maintains a sliding connection with the inner wall of the assisting slide groove away from the connecting seat and is pressed against the assisting slide groove; the assisting slide groove is away from the inner wall of the connecting seat and is arranged within the rotation trajectory range of the assisting slide groove opening to form an angle with the outer boundary of the trajectory range.

[0011] As a further improvement of the present invention, the tail end of the auxiliary sliding groove is connected to the limiting groove; the limiting groove is located on the side of the auxiliary sliding groove close to the connecting seat; there is an angle between the opening direction of the auxiliary sliding groove and the cutting direction of the limiting groove.

[0012] As a further improvement of the utility model, the connecting piece is a torsion spring, one end of the torsion spring is plugged into the connecting seat, and the other end of the torsion spring is movably connected to the booster handle.

[0013] As a further improvement of the utility model, the booster handle also includes a booster rod, and the booster handle is detachably connected to the booster rod at both sides.

[0014] As a further improvement of the utility model, the booster handle includes a first booster plate and a second booster plate, and a fixing hole is provided at a connecting end of the first booster plate and the second booster plate.

[0015] As a further improvement of the utility model, fixing holes are opened on both sides of the booster rod, and fixing pins are embedded in the fixing holes on both sides of the booster rod through the fixing holes on both sides of the first booster plate and the second booster plate, so that the first booster plate and the second booster plate are fixedly connected to the booster rod through the fixing pins.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] Compared with the prior art, the present invention realizes the combination of the safety bolt and the safety abutment switch. After the charging gun is plugged into the connection socket, the safety bolt pops out and enters the limit hole in the middle of the first abutment plate for limit locking. Through the contact method of the safety abutment switch, it is determined whether the charging gun and the connection socket are plugged in and fully fit. Compared with the manual safety device of the prior art, it is more convenient and automatic, and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the left three-dimensional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the right three-dimensional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the charging gun of the utility model;

[0021] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 5 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 6 For this utility model Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 7 For this utility model Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0025] Figure 8 This is a schematic cross-sectional structure diagram of the booster handle in the second embodiment of the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the booster block in the second embodiment of the utility model.

[0027] Description of the numbers in the figure:

[0028] Connecting seat 1, charging gun 2, boosting block 21, abutment member 3, auxiliary sliding groove 31, limiting groove 32, first abutment plate 33, limiting hole 331, second abutment plate 34, connecting member 35, safety mechanism 4, first safety cavity 41, safety bolt 411, second safety cavity 42, safety abutment switch 421. DETAILED DESCRIPTION

[0029] Specific embodiment 1: Please refer to Figure 1-7 A safety device of a charging quick-plug connector includes a connection base 1, a charging gun 2, an abutment 3 and a safety mechanism 4. One end of the connection base 1 is plugged into the power box, and the other end of the connection base 1 is plugged into the charging gun 2.

[0030] Through holes are provided on both sides of the connection base 1. One end of the connection base 1 away from the booster handle 2 is used to connect to the electric box, and one end of the connection base 1 close to the booster handle 2 is plugged into the connector.

[0031] Connecting members 35 are provided on both sides of the abutting member 3 close to the connecting seat 1, and the abutting member 3 is rotatably connected to the connecting members 35. The connecting members 35 are embedded in the through holes on both sides of the connecting seat 1 so that the abutting member 3 is rotatably connected to the connecting seat 1. The lower ends of both sides of the middle of the abutting member 3 are respectively provided with a first abutting plate 33 and a second abutting plate 34. The first abutting plate 33 is fixedly connected to the lower end of one side of the middle of the abutting member 3, and a limiting hole is provided in the middle of the first abutting plate 33. The second abutting plate 34 is fixedly connected to the lower end of the other side of the middle of the abutting member 3. The first abutting plate 33 and the second abutting plate 34 are arranged opposite to each other.

[0032] A safety mechanism 4 is provided at the lower middle end of the charging gun 2, and the safety mechanism 4 is fixedly connected to the charging gun 2. The safety device includes a first safety cavity 41 and a second safety cavity 42. The first safety cavity 41 cooperates with the first abutment plate 33, and the middle part of the first safety cavity 41 is a hollow cavity through hole, and a safety bolt 411 is provided in the cavity through hole; after the charging gun 2 and the connecting seat 1 are completely plugged in and tightly fitted, the safety bolt 411 and the limiting hole in the middle of the first abutment plate 33 are always aligned, and the size of the safety bolt 411 matches the size of the limiting hole. The second safety cavity 41 cooperates with the second abutment plate 33, and the middle part of the second safety cavity 42 is a hollow cavity through hole, and a safety abutment switch 421 is provided in the cavity through hole. The safety mechanism 4 also includes a controller and a drive device; the safety contact switch 421 includes a sensor device; when the safety contact switch 421 contacts the second contact plate 34, the safety contact switch 421 contacts the second safety cavity 42 and triggers the sensor device; after the sensor device sends an electrical signal, the controller receives the electrical signal and sends an operation electrical signal to the drive device, and after the drive device receives the electrical signal, it drives the safety bolt 411 to slide out of the first safety cavity 41 and plug into the limit hole. The sensor device is electrically connected to the controller, the output end of the drive device is fixedly connected to the safety bolt 411, and the output end of the drive device is electrically connected to the controller.

[0033] When the charging gun 2 is plugged into the connection socket 1, the moving track of the safety mechanism 4 is kept parallel to the middle height of the first abutment plate 33 and the second abutment plate 34, so that the charging gun 2 can abut the safety limit switch 421 and the second abutment plate 34 during the plugging process; the safety abutment switch 421 is retracted into the second safety cavity 42 and touches the contact device. At the same time, the moving track of the safety bolt 411 is always parallel to the limiting hole in the middle of the first abutment plate 33, so that after the charging gun 2 is plugged into the connection socket 1, the safety bolt 411 in the first safety cavity 41 is bounced up by the contact device to enter the limiting hole in the middle of the first abutment plate 33 for limiting locking.

[0034] Working principle:

[0035] During use, the utility model realizes the locking of the safety device through the plugging process of the charging gun and the connector. During the plugging process, the safety abutment switch in the second safety cavity always remains in a pop-up state. During the plugging process, the safety abutment switch abuts the second abutment plate, so that the safety abutment switch is retracted into the second safety cavity and touches the contact device; the safety bolt in the first safety cavity is popped up through the contact device to enter the limit hole in the middle of the first abutment plate for limit locking.

[0036] Specific embodiment 2: Please refer to Figure 8-9 A safety device for a charging quick-plug connector is provided, which is different from the specific embodiment 1 in that the abutment member 3 is a booster handle and the connecting member 35 is a torsion spring.

[0037] A booster block 21 is provided on the outer side wall of the charging gun 2 close to the plug-in end of the connecting socket 1 , and the booster block 21 is fixedly connected to the outer side wall of the charging gun 2 .

[0038] The inner wall of the boosting handle is provided with an auxiliary slide groove 31, and the opening of the auxiliary slide groove 31 is located at the lower edge of the boosting handle. The tail end of the auxiliary slide groove 31 is connected to the limiting groove 32, and the limiting groove 32 is located on the side of the auxiliary slide groove 31 close to the connecting seat 1. There is an angle between the opening direction of the auxiliary slide groove 31 and the cutting direction of the limiting groove 32. The opening of the auxiliary slide groove 31 is larger than the size of the boosting block 21, so that when the boosting handle 2 is pressed down, the boosting block 21 is located within the range of the opening of the auxiliary slide groove 31. When the boosting handle is pressed down for installation, the boosting block 21 maintains a sliding connection with the inner wall of the auxiliary slide groove 31 away from the connecting seat 1 and is pressed against. The size of the boosting block 21 is equal to that of the limiting groove 32, so that the boosting block 21 completely abuts against the inner groove wall of the limiting groove 32. The auxiliary slide groove 31 is away from the inner wall of the connecting seat 1 and is arranged within the rotation trajectory range of the opening of the auxiliary slide groove 31 to form an angle with the outer boundary of the trajectory range. The booster handle can be reset in a normal state by a torsion spring.

[0039] The booster handle is provided with fixing grooves matching the torsion spring on both sides near the connection seat, and the booster handle can be reset in a normal state through the torsion spring. The booster handle includes a booster rod, a first booster plate and a second booster plate. Fixing holes are provided on both sides of the booster rod, and fixing holes are provided at the connecting ends of the first booster plate and the second booster plate. Fixing pins are embedded in the fixing holes on both sides of the booster rod through the fixing holes on both sides of the first booster plate and the second booster plate, so that the first booster plate and the second booster plate are fixedly connected to the booster rod through the fixing pins.

[0040] The first booster plate is an L-shaped plate and the L-shaped angle is an obtuse angle, so that the installation position of the booster rod is more in line with the mechanical structure. The upper end of the L-shaped plate in the vertical direction of the first booster plate is the connecting end, and the connecting end of the first booster plate is fixedly connected to one end of the booster rod by a fixing bolt. A first auxiliary slide groove is provided at one end of the L-shaped plate of the first booster plate in the horizontal direction close to the connecting seat, and passes through the edge of the first booster plate in the vertical direction. A first limiting groove is also provided on the side of the upper end of the first auxiliary slide groove close to the connecting seat. There is an angle between the opening direction of the first auxiliary slide groove and the cutting direction of the first limiting groove. The first auxiliary slide groove is connected to the first limiting groove. The first limiting groove is provided on the side of one end of the first auxiliary slide groove away from the opening end. A first abutment block is provided at the horizontal end of the L-shaped plate of the first booster plate close to the angle, and a through hole groove is provided in the middle of the end face of the first abutment block, and the first abutment block is fixedly connected to the first booster plate for abutting the pushing member.

[0041] The second booster plate is an L-shaped plate and the L-shaped angle is an obtuse angle. The first booster plate and the second booster plate are arranged opposite to each other. The upper end of the L-shaped plate of the second booster plate in the vertical direction is a connecting end, and the connecting end of the second booster plate is fixedly connected to the other end of the booster rod by a fixing bolt. A second auxiliary slide groove is provided at one end of the L-shaped plate of the second booster plate in the horizontal direction close to the connecting seat, and passes through the edge of the second booster plate in the vertical direction. A second limiting groove is also provided on the side of the upper end of the second auxiliary slide groove close to the connecting seat. An angle is formed between the opening direction of the second auxiliary slide groove and the cutting direction of the second limiting groove. The second auxiliary slide groove is connected to the second limiting groove. The second limiting groove is provided on the side of one end of the second auxiliary slide groove away from the opening end. A second abutment block is provided at the horizontal end of the L-shaped plate of the second booster plate close to the angle, and the second abutment block is fixedly connected to the second booster plate for abutting the pushing member.

[0042] Working principle:

[0043] The connection between the charging gun and the connector is achieved through the assistance of the booster handle. When the charging gun is connected to the connecting seat, the booster block is located at the open end of the assisting slide groove and applies pressure to the booster handle. The booster block always fits the inner wall of the assisting slide groove away from the connecting seat. The booster handle moves downward so that the axial pressure on the inside always presses the booster block to slide along the trajectory of the inner wall of the assisting slide groove away from the connecting seat and enter the limit groove.

Claims

1. A safety device for a charging quick-plug connector, characterized in that: The safety device is installed at the lower end of the charging gun (2); the charging gun (2) is used to be plugged into the connection seat (1); one end of the connection seat (1) is used to be connected to the electric box; the other end of the connection seat (1) is plugged into the charging gun (2); the safety device comprises an abutment member (3) and a safety mechanism (4); the abutment member (3) is connected to the connection seat (1); The abutment member (3) comprises a first abutment plate (33) and a second abutment plate (34) respectively located on two sides of the connection seat (1); the first abutment plate (33) is provided with a limiting hole; The safety mechanism (4) comprises a first safety cavity (41) and a second safety cavity (42); a safety bolt (411) is slidably provided inside the first safety cavity (41); a safety abutment switch (421) is slidably provided inside the second safety cavity (42); when the charging gun (2) is not plugged into the connection base (1), the safety bolt (411) is located inside the first safety cavity (41) and the safety abutment switch (421) protrudes outside the second safety cavity (42); when the charging gun (2) is plugged into the connection base (1), the safety abutment switch (421) abuts against the second abutment plate (34) so ​​that the safety abutment switch (421) abuts into the second safety cavity (42); the safety bolt (411) and the safety abutment switch (421) are linked to each other so that the safety bolt (411) protrudes outside the first safety cavity (41) and is plugged into the limiting hole of the first abutment plate (33).

2. A safety device for a charging quick-plug connector according to claim 1, characterized in that: The safety mechanism (4) further comprises a sensor device, a controller and a drive device; the sensor device is located at the rear end of the second safety cavity (42) and is used to obtain position information of the safety contact switch (421) in the second safety cavity (42); the sensor device is electrically connected to the controller and is used to receive a signal sent by the sensor device; the output end of the drive device is fixedly connected to the safety bolt (411), and the output end of the drive device is electrically connected to the controller and is used to receive an operation signal sent by the controller and operate the safety bolt (411).

3. The safety device of a charging quick-plug connector according to claim 1, characterized in that: The size of the safety pin (411) matches the size of the limiting hole; when the charging gun (2) is plugged into the connection base (1), the movement trajectory of the safety mechanism (4) remains parallel to the middle height of the first abutment plate (33) and the second abutment plate (34); the movement trajectory of the safety pin (411) is always parallel to the limiting hole in the middle of the first abutment plate (33).

4. The safety device of a charging quick-plug connector according to claim 1, characterized in that: Through holes are provided on both sides of the connection seat (1); the abutment member (3) is rotatably connected to the connection member (35); and the connection member (35) is embedded in the through holes on both sides of the connection seat (1) so that the abutment member (3) is rotatably connected to the connection seat (1).

5. A safety device for a charging quick-plug connector according to claim 4, characterized in that: The abutment member (3) is connected to the connection seat (1) via a connection member (35); the abutment member (3) is an assisting handle, and the inner side wall of the assisting handle is provided with an assisting slide groove (31); the opening of the assisting slide groove (31) is located at the lower side edge of the assisting handle; an assisting block (21) is provided at the outer end of the charging gun (2); the opening of the assisting slide groove (31) is larger than the size of the assisting block (21), so that when the assisting handle is pressed down, the assisting block (21) is located within the range of the opening of the assisting slide groove (31); when the assisting handle is pressed down for installation, the assisting block (21) maintains a sliding connection with the inner wall of the assisting slide groove (31) away from the connection seat (1) and is pressed against the assisting slide groove (31); the inner wall of the assisting slide groove (31) away from the connection seat (1) is arranged within the rotation track range of the opening of the assisting slide groove (31) to form an angle with the outer boundary of the track range.

6. A safety device for a charging quick-plug connector according to claim 5, characterized in that: The rear end of the auxiliary sliding groove (31) is connected to the limiting groove (32); the limiting groove (32) is located on a side of the auxiliary sliding groove (31) close to the connecting seat (1); an angle is formed between the opening direction of the auxiliary sliding groove (31) and the cutting direction of the limiting groove (32).

7. The safety device of the charging quick-plug connector according to claim 5, characterized in that: The connecting member (35) is a torsion spring, one end of which is plugged into the connecting seat (1), and the other end of which is movably connected to the booster handle.

8. The safety device of the charging quick-plug connector according to claim 5, characterized in that: The booster handle also includes a booster rod, and the booster handle is detachably connected to both sides of the booster rod.

9. A safety device for a charging quick-plug connector according to claim 8, characterized in that: The boosting handle comprises a first boosting plate and a second boosting plate, and a fixing hole is provided at the connecting end of the first boosting plate and the second boosting plate.

10. A safety device for a charging quick-plug connector according to claim 9, characterized in that: Fixing holes are opened on both sides of the booster rod, and fixing pins are embedded in the fixing holes on both sides of the booster rod through the fixing holes on both sides of the first booster plate and the second booster plate, so that the first booster plate and the second booster plate are fixedly connected to the booster rod through the fixing pins.

Images