Mechanical door lock device for switchgear door lock

Abstract

The utility model relates to the field of switch cabinet door lock, especially switch cabinet door lock's mechanical door lock device, technical scheme: switch cabinet door lock's mechanical door lock device, including door lock mounting panel, door lock main part, first lock body, second lock body, third lock body, movable lock bar and spacing frame, the front end of door lock mounting panel is installed with door lock main part and second lock body, the utility model discloses a first locking structure that is composed of second lock mouth, third lock body and first lock catch cooperates second locking structure that is composed of first lock mouth, second lock body and second lock catch can carry out secondary auxiliary locking to the mechanical lock main body that is composed of rotating handle, first lock body and locking head, and the storage groove structure that is composed of first groove body and apron cooperates and can carry out hidden processing to rotating handle, to improve the security of mechanical lock main body when using, the security of the mechanical door lock of existing switch cabinet machine when using is not good, and the problem that it is easy to be opened by others is solved.

Description

Technical Field

[0001] This utility model belongs to the field of switch cabinet door locks, specifically relating to a mechanical door lock device for switch cabinet doors. Background Technology

[0002] Switchgear door locks are devices used in power systems, primarily for the distribution, control, and protection of high-voltage power. They typically include switches, protection devices, monitoring systems, and power distribution systems. They can withstand high voltages and automatically disconnect the circuit in case of a fault, ensuring the safe operation of the power system.

[0003] The existing mechanical door lock structures in switch cabinets mostly rely on a single door lock structure to lock and fix the switch cabinet door. However, because the single mechanical door lock structure is relatively simple and its unlocking port is often exposed, it is very easy for others to accidentally unlock it during actual use, resulting in poor security of the switch cabinet door lock.

[0004] Therefore, in response to the problem that the existing mechanical door locks of switch cabinets are not secure enough and are easily opened by others, a mechanical door lock device for switch cabinets has been developed. By adding a double auxiliary locking structure and a main lock concealment structure to the mechanical door lock of the switch cabinet, the security of the mechanical door lock can be effectively improved, making it difficult for others to open it accidentally. Utility Model Content

[0005] To overcome the problem that the mechanical door locks of existing switch cabinets are not secure enough and can be easily opened by others.

[0006] The technical solution of this utility model is as follows: a mechanical door lock device for a switch cabinet door lock, including a door lock mounting plate and a door lock body, and further including a first lock body, a second lock body, a third lock body, a movable lock rod, and a limiting frame. The door lock body and the second lock body are installed at the front end of the door lock mounting plate, and the first lock body and the third lock body are installed at the front end of the door lock body. A locking stop head is fixedly connected to the front end of the first lock body, and a second lock buckle is fixedly connected to the front edge of the second lock body. A locking plate is fixedly connected to the outer wall of the first lock body, and a locking groove is opened at the right end of the locking plate. A second lock groove and a first lock groove are opened through the front and rear ends of the movable lock rod, and a third lock groove is opened at the upper end of the movable lock rod. A first extension post is fixedly connected to the front end of the limiting frame, and a second extension post is fixedly connected to the front end of the movable lock rod. The first extension post and the second extension post are connected by a return spring. The front end of the third lock body passes through the second lock groove and is fixedly connected to the first lock buckle. The limiting frame is fixedly connected to the front end of the door lock body.

[0007] Preferably, the front end of the door lock mounting plate and the door lock body is provided with a first groove, and a hinge bracket is fixedly connected to the front edge of the first groove.

[0008] Preferably, a cover plate is rotatably mounted on the hinged frame, and the cover plate is adapted to the first groove.

[0009] Preferably, the front end of the door lock mounting plate is equipped with a first lock slot and a second lock slot, the first lock slot is connected to the second lock body, the second lock slot is connected to the third lock body, and a rotating handle is installed at the rear end of the first lock body.

[0010] Preferably, the locking groove is adapted to the left end of the movable locking rod, the first locking groove is fitted onto the second locking buckle, and the first locking buckle and the third locking groove are adapted to each other.

[0011] Preferably, the second lock opening is located on the right side of the first slot, the first lock opening is located on the right side of the second lock opening, the third lock body is located on the right side of the first lock body, the second lock body is located on the right side of the door lock body, the second extension post is located on the left side of the first lock slot, the third lock slot is located on the left side of the second extension post, and the second lock slot is located on the left side of the third lock slot.

[0012] Preferably, the rear end of the movable locking rod is fitted with the front end of the door lock body, the inner wall of the limiting bracket is fitted with the outer wall of the movable locking rod, and the rear end of the locking plate is fitted with the front end of the door lock body.

[0013] Preferably, a limiting frame is fixed to the front end of the door lock body, and the limiting frame covers the locking plate inside it.

[0014] The beneficial effects of this utility model are:

[0015] 1. The first locking structure, consisting of the second lock opening, the third lock body, and the first latch, combined with the second locking structure, consisting of the first lock opening, the second lock body, and the second latch, can provide secondary auxiliary locking for the mechanical lock body, which consists of the rotating handle, the first lock body, and the locking head, thereby improving the safety and robustness of the mechanical lock body during use.

[0016] 2. The storage groove structure consisting of the first groove and the cover plate can hide the rotating handle, thereby further improving the security of the mechanical lock body during use. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the mechanical door lock device of the switch cabinet door lock of this utility model;

[0018] Figure 2 The diagram shown is a three-dimensional disassembled view of the mechanical door lock device of the switch cabinet door lock of this utility model;

[0019] Figure 3 The diagram shows a three-dimensional disassembled view of the door lock mounting plate, first lock slot, second lock slot, rotating handle, and cover plate of the mechanical door lock device of the switch cabinet door lock of this utility model.

[0020] Figure 4 The diagram shows a three-dimensional, disassembled view of the door lock mounting plate, door lock body, first lock body, second lock body and third lock body of the mechanical door lock device of the switch cabinet door lock of this utility model.

[0021] Figure 5 The diagram shown is a three-dimensional disassembled view of the movable locking rod, return spring, and limit bracket of the mechanical door lock device of the switch cabinet door lock of this utility model.

[0022] Explanation of reference numerals in the attached diagram: 1-Door lock mounting plate, 2-Door lock body, 3-First lock body, 4-Second lock body.

[0023] 5-Third lock body, 6-Modible lock rod, 7-First lock port, 8-Second lock port, 9-First groove, 10-Rotating handle, 11-Hinge frame, 12-Cover plate, 13-Locking head, 14-First latch, 15-Second latch, 16-Locking plate, 17-Locking groove, 18-First lock groove, 19-Second lock groove, 20-Limiting frame, 21-Reset spring, 22-Third lock groove, 23-First extension post, 24-Second extension post, 25-Limiting frame. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please see Figures 1-5 This utility model provides an embodiment of a mechanical door lock device for a switch cabinet door, including a door lock mounting plate 1 and a door lock body 2, and further including a first lock body 3, a second lock body 4, a third lock body 5, a movable lock rod 6, and a limiting bracket 20. The door lock body 2 and the second lock body 4 are installed at the front end of the door lock mounting plate 1, and the first lock body 3 and the third lock body 5 are installed at the front end of the door lock body 2. A locking stop head 13 is fixedly connected to the front end of the first lock body 3, and a second lock buckle 15 is fixedly connected to the front edge of the second lock body 4. A locking plate is fixedly connected to the outer wall of the first lock body 3. 16. A locking groove 17 is provided at the right end of the locking plate 16. A second locking groove 19 and a first locking groove 18 are provided through the front and rear ends of the movable locking rod 6. A third locking groove 22 is provided at the upper end of the movable locking rod 6. A first extension post 23 is fixedly connected to the front end of the limiting frame 20. A second extension post 24 is fixedly connected to the front end of the movable locking rod 6. The first extension post 23 and the second extension post 24 are connected by a return spring 21. A first lock buckle 14 is fixedly connected to the front end of the third lock body 5 through the second locking groove 19. The limiting frame 20 is fixedly connected to the front end of the door lock body 2.

[0026] The first locking structure, consisting of the second locking port 8, the third locking body 5, and the first locking buckle 14, combined with the second locking structure, consisting of the first locking port 7, the second locking body 4, and the second locking buckle 15, can provide secondary auxiliary locking for the mechanical lock body, which consists of the rotating handle 10, the first locking body 3, and the locking head 13, thereby improving the safety and sturdiness of the mechanical lock body during use. The storage groove structure, consisting of the first groove 9 and the cover plate 12, can hide the rotating handle 10, thereby further improving the safety of the mechanical lock body during use.

[0027] Please see Figure 3 In this embodiment, a first groove 9 is provided at the front end of the door lock mounting plate 1 and the door lock body 2. A hinge frame 11 is fixedly connected to the front edge of the first groove 9. The first groove 9 can hide the rotating handle 10 to prevent others from easily discovering the rotating handle 10 and operating it. A cover plate 12 is rotatably installed on the hinge frame 11. The cover plate 12 is adapted to the first groove 9. The cover plate 12 can protect the rotating handle 10 hidden in the first groove 9 to improve its service life. A limiting frame 25 is fixedly connected to the front end of the door lock body 2. The limiting frame 25 covers the locking plate 16 inside it. The limiting frame 25 can limit the rotation of the locking plate 16 by 90 degrees to prevent it from rotating excessively and causing the locking plate 16 to fall out of the lock groove on the cabinet door frame.

[0028] Please see Figures 4-5 In this embodiment, the front end of the door lock mounting plate 1 is equipped with a first lock port 7 and a second lock port 8. The first lock port 7 is connected to the second lock body 4, and the second lock port 8 is connected to the third lock body 5. The rear end of the first lock body 3 is equipped with a rotating handle 10. The first lock port 7, the second lock port 8, and the rotating handle 10 can control the rotation and opening of the second lock body 4, the third lock body 5, and the first lock body 3, respectively. The locking groove 17 is adapted to the left end of the movable locking rod 6. The first locking groove 18 is fitted onto the second locking buckle 15. The first locking buckle 14 and the third locking groove 22 are adapted to each other. The adapted locking groove 17 and the movable locking rod 6 can limit and fix the first lock body 3, thus locking it.

[0029] Please see Figures 3-5In this embodiment, the second lock opening 8 is located to the right of the first groove 9, the first lock opening 7 is located to the right of the second lock opening 8, the third lock body 5 is located to the right of the first lock body 3, the second lock body 4 is located to the right of the door lock body 2, the second extension post 24 is located to the left of the first lock groove 18, the third lock groove 22 is located to the left of the second extension post 24, and the second lock groove 19 is located to the left of the third lock groove 22. The first extension post 23 and the second extension post 24 can enable the return spring 21 to assist the movable lock rod 6 in automatically resetting along the inner wall of the limiting frame 20 through elastic force. The rear end of the movable lock rod 6 is in contact with the front end of the door lock body 2, the inner wall of the limiting frame 20 is in contact with the outer wall of the movable lock rod 6, and the rear end of the locking plate 16 is in contact with the front end of the door lock body 2. The limiting frame 20 can provide limiting assistance for the movable lock rod 6 to improve its stability when performing locking or unlocking operations.

[0030] Before use, install the door lock mounting plate 1 onto the cabinet door of the switch cabinet in a suitable position so that the lock stop head 13 can be locked onto the lock stop on the high voltage switch cabinet door frame;

[0031] In use, the first lock port 7 and the second lock port 8 need to be turned first to make the second lock body 4 and the third lock body 5 rotate. This causes the first latch 14, which rotates with the third lock body 5, to move out of the third lock groove 22 and initially unlock the movable lock rod 6, which is in a locked state. Then, the second latch 15, which rotates with the second lock body 4, drives the movable lock rod 6, which has been initially unlocked, to rotate and move to the right along the inner wall of the first lock groove 18, and pulls the return spring 21 into a stretched state. This causes the left end of the movable lock rod 6 to move out of the locking groove 17 and unlock the first lock body 3 a second time.

[0032] Then, open the cover plate 12 and manually turn the rotating handle 10 to make the first lock body 3 drive the locking head 13 to rotate and open;

[0033] When closing the cabinet door, the return spring 21 in the stretched state pushes the movable locking rod 6 back into the locking groove 17 by elastic force, and then the operation can be reversed as described above.

[0034] Through the above steps, the first locking structure composed of the second lock opening 8, the third lock body 5, and the first latch 14, combined with the second locking structure composed of the first lock opening 7, the second lock body 4, and the second latch 15, can provide secondary auxiliary locking for the mechanical lock body composed of the rotating handle 10, the first lock body 3, and the locking head 13, thereby improving the security and sturdiness of the mechanical lock body during use. The storage groove structure composed of the first groove 9 and the cover plate 12 can hide the rotating handle 10, further improving the security of the mechanical lock body during use. This solves the problem of poor security and easy opening by others in the mechanical door locks of existing switch cabinets.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A mechanical door lock device for a switch cabinet door lock, comprising a door lock mounting plate (1) and a door lock body (2), characterized in that: It also includes a first lock body (3), a second lock body (4), a third lock body (5), a movable lock rod (6), and a limit bracket (20). The front end of the door lock mounting plate (1) is equipped with the door lock body (2) and the second lock body (4). The front end of the door lock body (2) is equipped with the first lock body (3) and the third lock body (5). The front end of the first lock body (3) is fixedly connected with a locking head (13). The front edge of the second lock body (4) is fixedly connected with a second lock buckle (15). The outer wall of the first lock body (3) is fixedly connected with a locking plate (16). The right end of the locking plate (16) is provided with a locking groove (17). The front and rear ends of the movable locking rod (6) are provided with a second locking groove (19) and a first locking groove (18). The upper end of the movable locking rod (6) is provided with a third locking groove (22). The front end of the limiting frame (20) is fixedly connected to a first extension post (23). The front end of the movable locking rod (6) is fixedly connected to a second extension post (24). The first extension post (23) and the second extension post (24) are connected by a return spring (21). The front end of the third lock body (5) passes through the second locking groove (19) and is fixedly connected to a first latch (14). The limiting frame (20) is fixedly connected to the front end of the door lock body (2).

2. The mechanical door lock device for the switch cabinet door lock according to claim 1, characterized in that: The front end of the door lock mounting plate (1) and the door lock body (2) is provided with a first groove (9), and a hinge bracket (11) is fixedly connected to the front edge of the first groove (9).

3. The mechanical door lock device for the switch cabinet door lock according to claim 2, characterized in that: A cover plate (12) is rotatably mounted on the hinge frame (11), and the cover plate (12) is adapted to the first groove (9).

4. The mechanical door lock device for the switch cabinet door lock according to claim 1, characterized in that: The front end of the door lock mounting plate (1) is equipped with a first lock port (7) and a second lock port (8). The first lock port (7) is connected to the second lock body (4), and the second lock port (8) is connected to the third lock body (5). The rear end of the first lock body (3) is equipped with a rotating handle (10).

5. The mechanical door lock device for the switch cabinet door lock according to claim 1, characterized in that: The locking groove (17) is adapted to the left end of the movable locking rod (6), the first locking groove (18) is fitted onto the second locking buckle (15), and the first locking buckle (14) and the third locking groove (22) are adapted to each other.

6. The mechanical door lock device for the switch cabinet door lock according to claim 1, characterized in that: The second lock opening (8) is located to the right of the first groove (9), the first lock opening (7) is located to the right of the second lock opening (8), the third lock body (5) is located to the right of the first lock body (3), the second lock body (4) is located to the right of the door lock body (2), the second extension post (24) is located to the left of the first lock groove (18), the third lock groove (22) is located to the left of the second extension post (24), and the second lock groove (19) is located to the left of the third lock groove (22).

7. The mechanical door lock device for the switch cabinet door lock according to claim 1, characterized in that: The rear end of the movable locking bar (6) is in contact with the front end of the door lock body (2), the inner wall of the limiting bracket (20) is in contact with the outer wall of the movable locking bar (6), and the rear end of the locking plate (16) is in contact with the front end of the door lock body (2).

8. The mechanical door lock device for the switch cabinet door lock according to claim 1, characterized in that: A limiting frame (25) is fixed to the front end of the door lock body (2), and the limiting frame (25) covers the locking plate (16) inside it.

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