A locking device for an electrical control cabinet

Abstract

This utility model discloses a locking device for an electrical control cabinet, belonging to the technical field of electrical control cabinets. It includes a cabinet body with a door frame at the front. The door frame has insertion holes at its top and bottom, and two through slots on one side. A cabinet door is rotatably connected to the inner cavity of the door frame, and a lock body is installed on the door. In this utility model, when the cabinet door is closed at the front of the cabinet body, a fixing plate passes through the through slots on the door frame into the inner side of the door frame. At this time, a rotating disc drives a spur gear to rotate synchronously. The meshing transmission between the spur gear and two racks drives two insert rods to move upwards or downwards respectively, so that the ends of the two insert rods are inserted into the insertion holes at the top and bottom of the inner cavity of the door frame. Simultaneously, the movement of the insert rods drives the fixing plate to move synchronously, moving the fixing plate from the through slot position to the inner side of the door frame, thus achieving the function of stably locking the cabinet door.

Description

Technical Field

[0001] This utility model relates to the field of electrical control cabinet technology, and more specifically, to a locking device for an electrical control cabinet. Background Technology

[0002] An electrical control cabinet is an industrial device used for power distribution, equipment control, and protection. It integrates switching devices, measuring instruments, and protective electrical appliances into a metal cabinet to realize the functions of circuit switching, regulation, and protection. It is widely used in industrial automation, power systems, and other fields.

[0003] A search revealed a utility model patent with publication number CN219085845U, which discloses a locking device for an electrical control cabinet. The device includes an electrical cabinet with a control board fixedly connected to its upper front side. The control board has a display screen on its upper front side and buttons on its lower front side. The cabinet has a door on its front side. This patent incorporates a transmission rod, gears, and a rack. When the electrical cabinet malfunctions and requires inspection and repair, for the safety of personnel, the power supply to the entire cabinet needs to be disconnected. First, the latch is detached from the lock body. Then, a second motor is controlled to rotate, driving a second shaft and gears to rotate. The gears drive the rack, which in turn moves the transmission rod within a groove, pulling one end of the transmission rod out of the power interface. This shuts off the power to the entire electrical cabinet while simultaneously opening the door, facilitating inspection and repair. However, the aforementioned patent has the following shortcomings: relying solely on the latch and lock body for door fixation is insufficient. Therefore, we propose a locking device for an electrical control cabinet. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a locking device for an electrical control cabinet.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A locking device for an electrical control cabinet includes a cabinet body, a door frame at the front of the cabinet body, insertion holes at the top and bottom of the door frame, two through slots on one side of the door frame, a cabinet door rotatably connected to the inner cavity of the door frame, a lock body mounted on the cabinet door, one end of the lock body extending to the inner side of the cabinet door and bolted with a lock tongue, one end of the lock tongue extending to the inner side of the door frame, a fixing mechanism on the inner wall of the cabinet door, and a rotating rod rotatably connected to the cabinet door via a bearing, one end of the rotating rod extending to the outside of the cabinet door and fixed. A turntable is connected to the cabinet door. The other end of the rotating rod extends to the inside of the cabinet door and is fixedly sleeved with a spur gear. The other end of the rotating rod is fixedly sleeved with a fixing ring. The side of the fixing ring is provided with a fixing groove. Insert rods are movably sleeved at the top and bottom of the cabinet door. One end of each of the two insert rods is movably sleeved into the inner cavity of two insertion holes. The other ends of the two insert rods are fixedly connected with racks. The two racks mesh with the spur gears respectively. Fixing plates are fixedly connected to each of the two insert rods. The ends of the two fixing plates extend to the inside of the door frame respectively.

[0007] As a preferred embodiment of this utility model, the fixing mechanism includes a bracket fixedly connected to the inner side of the cabinet door. Two springs are fixedly connected to the end of the bracket, and a push plate is fixedly connected to the end of the two springs. The end of the push plate is in contact with the other end of the locking tongue. A square post is fixedly connected to the push plate, and an insert is fixedly connected to the end of the square post. The end of the insert is movably sleeved into the inner cavity of the fixing groove, and the square post and the bracket are movably sleeved.

[0008] As a preferred embodiment of this utility model, the inner wall of the cabinet door is bolted with two limiting seats, each of which is provided with a limiting hole. The insert rod passes through the inner side of the limiting hole, and the side of the insert rod fits against the inner wall of the limiting hole.

[0009] In a preferred embodiment of this utility model, the side of the insertion rod is in contact with the inner wall of the insertion hole, and the bottom end of one of the insertion rods is in contact with the bottom surface of the cabinet cavity.

[0010] In a preferred embodiment of this utility model, the inner side of the door frame is respectively attached to the side of the latch and the side of the fixing plate.

[0011] In a preferred embodiment of this utility model, the inner wall of the fixing groove and the side of the insert block are in contact.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] (1) In this utility model, when the cabinet door is closed at the front of the cabinet, the fixing plate passes through the groove on the door frame and enters the inner side of the door frame. At this time, the rotating turntable drives the spur gear to rotate synchronously. The meshing transmission between the spur gear and the two racks drives the two insert rods to move up or down respectively, so that the ends of the two insert rods are inserted into the insertion holes at the top and bottom of the inner cavity of the door frame respectively. At the same time, when the insert rods move, they drive the fixing plate to move synchronously, so that the fixing plate moves from the groove position to the inner side of the door frame, thereby realizing the function of stably locking the cabinet door.

[0014] (2) In this utility model, when locking the cabinet door, the operation of the lock body drives the lock tongue to rotate 90 degrees, so that one end of the lock tongue extends to the inside of the door frame, thereby fixing the cabinet door again. The other end of the lock tongue pushes the push plate to move, and the push plate drives the square column and the insert to move, so that the insert is inserted into the fixing groove on the side of the fixing ring, thereby fixing the fixing ring, the rotating rod, the spur gear and the rack, and thus stably locking the cabinet door at the front of the cabinet, with good stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the cabinet structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cabinet door structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the limiting seat of this utility model;

[0020] Figure 6 This utility model Figure 4 Enlarged diagram of point A in the diagram.

[0021] The following are the labels in the diagram: 1. Cabinet body; 2. Door frame; 3. Through groove; 4. Insertion hole; 5. Cabinet door; 6. Lock body; 7. Fixing mechanism; 8. Rotating rod; 9. Turntable; 10. Spur gear; 11. Insert rod; 12. Rack; 13. Fixing ring; 14. Fixing groove; 15. Lock tongue; 16. Fixing plate; 17. Bracket; 18. Spring; 19. Push plate; 20. Square column; 21. Insert block; 22. Limiting seat; 23. Limiting hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-6A locking device for an electrical control cabinet includes a cabinet body 1, a door frame 2 at the front of the cabinet body 1, insertion holes 4 at the top and bottom of the door frame 2, two through slots 3 on one side of the door frame 2, a cabinet door 5 rotatably connected to the inner cavity of the door frame 2, a lock body 6 installed on the cabinet door 5, the end of the lock body 6 extending to the inner side of the cabinet door 5 and bolted with a lock tongue 15, one end of the lock tongue 15 extending to the inner side of the door frame 2, a fixing mechanism 7 provided on the inner wall of the cabinet door 5, and a rotating rod 8 rotatably connected to the cabinet door 5 via a bearing, one end of the rotating rod 8 extending to the outside of the cabinet door 5 and fixedly connected to a turntable. 9. The other end of the rotating rod 8 extends to the inside of the cabinet door 5 and is fixedly sleeved with a spur gear 10. The other end of the rotating rod 8 is fixedly sleeved with a fixing ring 13. The side of the fixing ring 13 is provided with a fixing groove 14. The top and bottom of the cabinet door 5 are movably sleeved with insert rods 11. One end of the two insert rods 11 is movably sleeved to the inner cavity of the two insertion holes 4 respectively. The other end of the two insert rods 11 is fixedly connected with racks 12. The two racks 12 mesh with the spur gear 10 respectively. The two insert rods 11 are fixedly connected with fixing plates 16. The ends of the two fixing plates 16 extend to the inside of the door frame 2 respectively.

[0027] In this embodiment, the height of the inner cavity of the through slot 3 is less than the height of the fixing plate 16, ensuring that the fixing plate 16 can pass through the through slot 3 into the inner side of the door frame 2, so that the fixing plate 16 can move with the plug rod 11 to the inner side of the door frame 2 to fix the cabinet door 5. Meanwhile, the lock body 6 can be of model MS903, MS509, MS830, MS820A, MS888, MS889, etc. In addition, the electrical equipment in the electrical control cabinet is existing technology and will not be described in detail.

[0028] For details, please refer to Figure 2 , Figure 4 and Figure 6 The fixing mechanism 7 includes a bracket 17 fixedly connected to the inner side of the cabinet door 5. Two springs 18 are fixedly connected to the end of the bracket 17. A push plate 19 is fixedly connected to the end of the two springs 18. The end of the push plate 19 is in contact with the other end of the latch 15. A square post 20 is fixedly connected to the push plate 19. An insert block 21 is fixedly connected to the end of the square post 20. The end of the insert block 21 is movably sleeved into the inner cavity of the fixing groove 14. The square post 20 and the bracket 17 are movably sleeved together.

[0029] In this embodiment, the other end of the locking tongue 15 is used to push the push plate 19 so that the insert block 21 is inserted into the inner cavity of the fixing groove 14.

[0030] For details, please refer to Figure 2 , Figure 4 and Figure 5The inner wall of the cabinet door 5 is fitted with two limit seats 22 by bolts. Each limit seat 22 is provided with a limit hole 23. The insertion rod 11 passes through the inner side of the limit hole 23, and the side of the insertion rod 11 fits against the inner wall of the limit hole 23.

[0031] In this embodiment, the insertion rod 11 is limited by the limiting seat 22 and the limiting hole 23.

[0032] For details, please refer to Figures 2 to 4 The side of the insertion rod 11 fits against the inner wall of the insertion hole 4, and the bottom end of one insertion rod 11 contacts the bottom surface of the inner cavity of the cabinet 1.

[0033] In this embodiment, the stability of the insertion rod 11 is ensured when it is inserted into the inner cavity of the insertion hole 4. At the same time, when the bottom end of one insertion rod 11 contacts the bottom surface of the inner cavity of the cabinet 1, the fixing groove 14 is aligned with the insertion block 21 so that the insertion block 21 can be inserted into the inner cavity of the fixing groove 14.

[0034] For details, please refer to Figure 2 The inner side of the door frame 2 is respectively attached to the side of the latch 15 and the side of the fixing plate 16.

[0035] In this embodiment, the stability of the locking tongue 15 and the fixing plate 16 in the inner side of the door frame 2 is ensured, thereby locking the cabinet door 5.

[0036] For details, please refer to Figure 6 The inner wall of the fixing groove 14 fits against the side of the insert block 21.

[0037] In this embodiment, the stability of the insert 21 inserted into the cavity of the fixing groove 14 is ensured, thereby ensuring the stability of the insert 21 in fixing the fixing ring 13, the rotating rod 8 and the spur gear 10.

[0038] Working principle: In use, firstly, the cabinet door 5 is rotated to close the front of the cabinet body 1, while simultaneously allowing the fixing plate 16 to pass through the slot 3 into the inner side of the door frame 2. Then, the turntable 9 is rotated to drive the rotating rod 8, spur gear 10, and fixing ring 13 to rotate synchronously. The meshing transmission between the spur gear 10 and the two racks 12 drives the two racks 12 and the two insert rods 11 to move upward or downward respectively, so that the ends of the two insert rods 11 are inserted into the insertion holes 4 at the top and bottom of the inner cavity of the door frame 2 respectively. At the same time, the movement of the insert rods 11 drives the fixing plate 16 to move synchronously, so that the fixing plate 16 moves from the position of the slot 3 to the inner side of the door frame 2, thereby installing the cabinet door 5 into the inner cavity of the door frame 2. Then, when the bottom end of one of the insert rods 11 contacts the bottom surface of the inner cavity of the cabinet 1, the fixing groove 14 on the side of the fixing ring 13 and the position of the insert block 21 are aligned. Finally, the operating fixing plate 16 drives the locking tongue 15 to rotate 90 degrees, so that one end of the locking tongue 15 extends to the inside of the door frame 2, thereby fixing the cabinet door 5 again. The other end of the locking tongue 15 pushes the push plate 19 to move, and the push plate 19 pushes the square column 20 and the insert block 21 to move, so that the insert block 21 is inserted into the fixing groove 14 on the side of the fixing ring 13, thereby fixing the fixing ring 13, the rotating rod 8, the spur gear 10 and the rack 12, and thus stably locking the cabinet door 5 to the front of the cabinet 1.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A locking device for an electrical control cabinet, comprising a cabinet body (1), characterized in that: The cabinet (1) has a door frame (2) at the front. The top and bottom of the door frame (2) are provided with insertion holes (4). Two through slots (3) are provided on one side of the door frame (2). The inner cavity of the door frame (2) is rotatably connected to the cabinet door (5). The cabinet door (5) is equipped with a lock body (6). The end of the lock body (6) extends to the inner side of the cabinet door (5) and is bolted with a lock tongue (15). One end of the lock tongue (15) extends to the inner side of the door frame (2). The inner wall of the cabinet door (5) is provided with a fixing mechanism (7). The cabinet door (5) is rotatably connected to a rotating rod (8) through a bearing. One end of the rotating rod (8) extends to the outside of the cabinet door (5) and is fixedly connected to a turntable (9). (8) The other end extends to the inside of the cabinet door (5) and is fixedly sleeved with a spur gear (10). The other end of the rotating rod (8) is fixedly sleeved with a fixing ring (13). The side of the fixing ring (13) is provided with a fixing groove (14). The top and bottom of the cabinet door (5) are movably sleeved with insert rods (11). One end of the two insert rods (11) is movably sleeved to the inner cavity of the two insertion holes (4). The other end of the two insert rods (11) is fixedly connected with a rack (12). The two racks (12) mesh with the spur gear (10) respectively. The two insert rods (11) are fixedly connected with a fixing plate (16). The ends of the two fixing plates (16) extend to the inside of the door frame (2).

2. The locking device for an electrical control cabinet according to claim 1, characterized in that: The fixing mechanism (7) includes a bracket (17) fixedly connected to the inner side of the cabinet door (5). Two springs (18) are fixedly connected to the end of the bracket (17). A push plate (19) is fixedly connected to the end of the two springs (18). The end of the push plate (19) is in contact with the other end of the latch (15). A square post (20) is fixedly connected to the push plate (19). An insert (21) is fixedly connected to the end of the square post (20). The end of the insert (21) is movably sleeved into the inner cavity of the fixing groove (14). The square post (20) and the bracket (17) are movably sleeved together.

3. The locking device for an electrical control cabinet according to claim 1, characterized in that: The inner wall of the cabinet door (5) is fitted with two limiting seats (22) by bolts. Each of the two limiting seats (22) is provided with a limiting hole (23). The insert rod (11) passes through the inner side of the limiting hole (23), and the side of the insert rod (11) fits against the inner wall of the limiting hole (23).

4. The locking device for an electrical control cabinet according to claim 1, characterized in that: The side of the insertion rod (11) fits against the inner wall of the insertion hole (4), and the bottom end of one of the insertion rods (11) contacts the bottom surface of the inner cavity of the cabinet (1).

5. The locking device for an electrical control cabinet according to claim 1, characterized in that: The inner side of the door frame (2) is respectively attached to the side of the latch (15) and the side of the fixing plate (16).

6. A locking device for an electrical control cabinet according to claim 2, characterized in that: The inner wall of the fixing groove (14) and the side of the insert (21) are in contact.

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