Safety electric box lock

Abstract

The utility model provides a safety electric box lock which comprises a box body, an opening is formed in the side of the box body, a box door is installed in the opening in a hinged mode, a door lock is installed on the box door and comprises a lock cylinder, a rotating seat is movably installed at one end of the lock cylinder, a limiting plate is welded to the rotating seat, an open groove is formed in the limiting plate, and the box door is installed in the open groove. A sliding groove is formed in the inner wall of the box door, a tension mechanism is fixed in the sliding groove, a sliding block is fixed to one end of the tension mechanism, and a movable plate is fixedly installed on the sliding block. The lock cylinder drives the rotating seat to rotate, the rotating seat rotates to enable the top of the limiting plate to lose supporting and limiting of the movable plate, the movable plate is driven by the tension mechanism to move downwards, the movable plate is installed at the position of an electric brake wrench after an electric brake is closed, and closing caused by upward movement of the electric brake wrench can be effectively avoided. And the electricity utilization safety is ensured during elevator maintenance.

Description

Technical Field

[0001] This utility model relates to the field of electrical box lock equipment, specifically a safety electrical box lock. Background Technology

[0002] Elevator power distribution boxes are assembled in closed or semi-closed metal cabinets according to electrical wiring requirements, which house switching equipment, measuring instruments, protective electrical appliances and auxiliary equipment. In the use of existing elevator power distribution boxes, it has been found that the working box is a closed space, which results in limited heat dissipation of the switching equipment, measuring instruments, protective electrical appliances and auxiliary equipment inside the working box, thus limiting its usability. In the later stages of elevator maintenance, it is impossible to turn off the switch to prevent electric shock when closing the circuit breaker.

[0003] According to the patent document CN205743349U, a special lock for elevator electrical boxes that prevents loosening is disclosed. It includes a lock body and a latch. The top of the lock body has symmetrical square anti-loosening grooves. A square lock cylinder is installed inside the lock body. The lock cylinder and lock body are fixed by a flat nut. The lock cylinder is inserted into a square hole on the latch, and a cubic latch anti-loosening platform is provided on the square hole. The latch anti-loosening platform cooperates with the anti-loosening groove on the lock body. This technical solution prevents automatic loosening due to prolonged vibration and can only be opened with a special key. However, while this solution achieves the anti-loosening effect, it cannot prevent electric shock from the internal circuit breaker during use, causing inconvenience. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a safe electrical box lock to solve the problems mentioned in the background. This utility model has a novel structure. The lock cylinder drives the rotating seat to rotate. The rotation of the rotating seat causes the top of the limiting plate to lose its support and limitation on the movable plate. The movable plate moves downward under the drive of the pulling mechanism. After the power switch is closed, the movable plate is installed at the power switch wrench, which can effectively prevent the power switch wrench from moving upward and causing the power switch to close. This ensures electrical safety during elevator maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety electrical box lock, comprising a box body with an opening on one side, a door hinged to the opening, a lock mounted on the door, the lock comprising a lock cylinder, a rotating seat movably mounted at one end of the lock cylinder, a limit plate welded to the rotating seat, a slot on the limit plate, a sliding groove on the inner wall of the door, a tension mechanism fixed inside the sliding groove, a slider fixed at one end of the tension mechanism, and a movable plate fixedly mounted on the slider.

[0006] Furthermore, an arc-shaped plate is fixed to one end of the limiting plate, and the arc-shaped plate is in movable contact with the movable plate, the movable plate being an insulating plate.

[0007] Furthermore, a fixing block is welded to the side of the box, and a fixing hole is opened on the fixing block. A cavity is opened inside the box, and the cavity is connected to the opening.

[0008] Furthermore, a positioning post and a threaded post are welded to the inner wall of the cavity, and a cooling fan is fixedly installed between the positioning post and the threaded post. An air inlet is opened on the side of the box.

[0009] Furthermore, a positioning tube is movably installed at one end of the positioning column, a threaded tube is rotatably installed at one end of the threaded column, and a bearing seat is fixed at one end of the threaded tube.

[0010] Furthermore, one end of the positioning tube is fixed with a mounting plate, the threaded tube is mounted on the mounting plate through a bearing seat, and the positioning tube has heat dissipation holes.

[0011] Furthermore, the mounting plate has mounting holes, and a switch is movably mounted on the mounting plate. The switch is fixedly mounted inside the mounting holes by bolts.

[0012] Furthermore, a fixing column is fixed inside the box, and the fixing column is movably installed in conjunction with the slot.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model uses a lock core to drive the rotating seat to rotate. The rotation of the rotating seat causes the top of the limiting plate to lose its support and limitation on the movable plate. The movable plate moves downward under the drive of the pulling mechanism. After the power switch is closed, the movable plate is installed at the power switch wrench, which can effectively prevent the power switch wrench from moving upward and causing the power switch to close. This ensures electrical safety during elevator maintenance.

[0015] 2. In this utility model, after the power switch is installed on the mounting plate, the threaded tube pushes the mounting plate to move back and forth. The back and forth movement of the mounting plate adjusts the contact position between the power switch wrench and the movable plate. By moving the mounting plate, power switch wrenches of different thicknesses can be made to contact the movable plate for use.

[0016] 3. In this utility model, a cooling fan blows air onto the mounting plate, which cools the entire circuit breaker on the mounting plate. The airflow then spreads to the sides of the mounting plate and blows air onto the positioning posts and positioning tubes. The positioning posts and positioning tubes indirectly absorb the high temperature of the mounting plate and the circuit breaker. After absorption, the airflow further cools the positioning posts and positioning tubes. Attached Figure Description

[0017] Figure 1This is a structural schematic diagram of a safety electrical box lock according to the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a safety electrical box lock according to the present invention after the box body has been cut open;

[0019] Figure 3 This is a schematic diagram of the inner wall structure of the door of a safety electrical box lock according to this utility model;

[0020] Figure 4 This is a schematic diagram of the cooling fan structure of a safety electrical box lock according to this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of a safety electrical box lock after the movable plate has been removed;

[0022] In the diagram: 1. Box body; 2. Opening; 3. Air inlet; 4. Box door; 5. Door lock; 6. Fixing block; 7. Fixing hole; 8. Cavity; 9. Mounting plate; 10. Mounting hole; 11. Positioning post; 12. Threaded post; 13. Movable plate; 14. Slide; 15. Pulling mechanism; 16. Slider; 17. Lock cylinder; 18. Rotating seat; 19. Limiting plate; 20. Slot; 21. Threaded tube; 22. Bearing seat; 23. Positioning tube; 24. Heat dissipation hole; 25. Cooling fan. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a safety electrical box lock, including a box body 1, an opening 2 on the side of the box body 1, a door 4 hinged inside the opening 2, a door lock 5 installed on the door 4, the door lock 5 including a lock cylinder 17, a rotating seat 18 movably mounted on one end of the lock cylinder 17, a limit plate 19 welded on the rotating seat 18, a slot 20 on the limit plate 19, a sliding groove 14 on the inner wall of the door 4, and a tensioning mechanism 15 fixed inside the sliding groove 14. Mechanism 15 is a tension spring. The tension spring drives the movable plate 13 to move downward to complete the limiting and fixing of the switch wrench. One end of the tension mechanism 15 is fixed with a slider 16. The movable plate 13 is fixedly installed on the slider 16. One end of the limiting plate 19 is fixed with an arc plate. The arc plate is in contact with the movable plate 13. The movable plate 13 is an insulating plate. The limiting plate 19 reduces friction by contacting the movable plate 13 through the arc plate. The limiting plate 19 facilitates the upward movement of the movable plate 13 through the arc plate.

[0025] In this embodiment, a fixing block 6 is welded to the side of the housing 1, and a fixing hole 7 is opened on the fixing block 6. A cavity 8 is opened inside the housing 1, and the cavity 8 is connected to the opening 2. A positioning post 11 and a threaded post 12 are welded to the inner wall of the cavity 8. A cooling fan 25 is fixedly installed between the positioning post 11 and the threaded post 12. An air inlet 3 is opened on the side of the housing 1. A positioning tube 23 is movably installed at one end of the positioning post 11, and a threaded tube 21 is rotatably installed at one end of the threaded post 12. A bearing seat 22 is fixed at one end of the threaded tube 21. The rotation of the threaded tube 21 pushes the mounting plate 9 to move. The movement of the mounting plate 9 adjusts the position of the switch, so that switches of different thicknesses can contact the movable plate 13.

[0026] In this embodiment, one end of the positioning tube 23 is fixed with a mounting plate 9, the threaded tube 21 is mounted on the mounting plate 9 through the bearing seat 22, the positioning tube 23 has a heat dissipation hole 24, the mounting plate 9 has a mounting hole 10, the mounting plate 9 is movably mounted with an electric switch, the electric switch is fixedly mounted inside the mounting hole 10 by bolts, the inside of the box 1 is fixed with a fixing column, the fixing column is movably mounted in the slot 20 to cooperate, and the limiting plate 19 is mounted on the fixing column through the slot 20 to complete the locking of the box door 4.

[0027] When using the device, the housing 1 is fixed in place at the usage position through the fixing hole 7 on the fixing block 6. After the housing 1 is fixed, the key is inserted into the door lock 5. The key drives the lock cylinder 17 to rotate. At the same time, the rotation of the lock cylinder 17 drives the rotating seat 18 to rotate. When the rotating seat 18 rotates, the slot 20 on the limit plate 19 separates from the fixing post. The limit plate 19 rotates upward and pushes the movable plate 13 upward through the arc plate. After the housing door 4 is opened outward, the entire circuit breaker is bolted and fixed to the mounting plate 9. One end of the bolt is rotated and installed inside the mounting hole 10. The position of the mounting plate 9 is adjusted according to the position of the circuit breaker and the wrench, so that the wrench of the circuit breaker moves to the bottom of the movable plate 13. When the position of the mounting plate 9 is adjusted, the threaded tube 21 rotates on the threaded post 12. The threaded tubes 21 on both sides rotate simultaneously. The threaded tubes 21 push the mounting plate 9 to move, and the installation... While plate 9 moves, the position of the power switch is adjusted. When power needs to be cut off, the power switch lever is pulled down to cut off the power. After power is cut off, the box door 4 is closed. The lock cylinder 17 drives the rotating seat 18 to rotate, causing the limit plate 19 to separate from the movable plate 13. After the movable plate 13 loses its support, the pulling mechanism 15 drives the movable plate 13 to descend. After the movable plate 13 descends, it squeezes and limits the power switch lever, effectively preventing power outages caused by the upward movement of the power switch lever, and effectively ensuring safety during power outage maintenance. When the power switch is in use, the cooling fan 25 blows air onto the mounting plate 9. The airflow cools the entire power switch on the mounting plate 9. The airflow spreads to the side of the mounting plate 9. After the airflow spreads, it blows air onto the positioning column 11 and the positioning tube 23. The positioning tube 23 and the positioning column 11 indirectly absorb the high temperature of the mounting plate 9 and the power switch. After absorption, the positioning tube 23 and the positioning column 11 are cooled down again by the airflow.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safe cabinet lock comprising a cabinet (1), characterized in that: The side of the box (1) is provided with an opening (2), the inside of the opening (2) is hingedly installed with a box door (4), the box door (4) is installed with a door lock (5), the door lock (5) comprises a lock cylinder (17), one end of the lock cylinder (17) is movably installed with a rotating seat (18), the rotating seat (18) is welded with a limiting plate (19), the limiting plate (19) is provided with a slot (20), the inner wall of the box door (4) is provided with a sliding groove (14), the sliding groove (14) is fixedly provided with a tension mechanism (15), one end of the tension mechanism (15) is fixedly provided with a sliding block (16), the sliding block (16) is fixedly installed with a movable plate (13).

2. A security electrical box lock according to claim 1, wherein: One end of the limiting plate (19) is fixedly provided with an arc-shaped plate, the arc-shaped plate is movably contacted with the movable plate (13), and the movable plate (13) is an insulating plate.

3. A security electrical box lock according to claim 1, wherein: The side of the box (1) is welded with a fixed block (6), the fixed block (6) is provided with a fixed hole (7), the inside of the box (1) is provided with a cavity (8), and the cavity (8) is connected with the opening (2).

4. A security electrical box lock according to claim 3, wherein: The inner wall of the cavity (8) is welded with a positioning column (11) and a threaded column (12), the positioning column (11) and the threaded column (12) are fixedly installed with a cooling fan (25), and the side of the box (1) is provided with an air inlet (3).

5. A security electrical box lock according to claim 4, wherein: One end of the positioning column (11) is movably installed with a positioning pipe (23), one end of the threaded column (12) is rotatably installed with a threaded pipe (21), and one end of the threaded pipe (21) is fixedly provided with a bearing seat (22).

6. A security electrical box lock according to claim 5, wherein: One end of the positioning pipe (23) is fixedly provided with a mounting plate (9), the threaded pipe (21) is installed on the mounting plate (9) through the bearing seat (22), and the positioning pipe (23) is provided with a cooling hole (24).

7. A security electrical box lock according to claim 6, wherein: The mounting plate (9) is provided with a mounting hole (10), and a power switch is movably installed on the mounting plate (9) and fixedly installed in the mounting hole (10) through bolts.

8. A security electrical box lock according to claim 1, wherein: The inside of the box (1) is fixedly provided with a fixed column, and the fixed column is movably installed in the slot (20) in cooperation.

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