Switch cabinet with self-locking valve mechanism

Abstract

The utility model provides a switch cabinet with a self-locking valve mechanism, which relates to the technical field of switch cabinet doors and comprises a switch cabinet body, an upper valve main body and a lower valve main body, the upper valve main body and the lower valve main body are respectively arranged at an input end and an output end and are in sliding connection with a cabinet door of the switch cabinet body, and inner walls of two sides of the switch cabinet body are fixedly connected with fixing frames. The two fixing frames are symmetrically distributed, bolts are connected to the fixing frames in an inserted mode, one ends of the bolts are sleeved with lower connecting arms, torsion springs and connecting springs are arranged in the fixing frames, and under the auxiliary effect of the upper connecting arms, the upper rotating arms, the lower connecting arms and the lower rotating arms, when the lower fire valve body is opened, the upper fire valve body cannot be opened; when the upper fire valve main body is opened, the lower valve main body cannot be opened to prevent the two valve main bodies from being opened simultaneously.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinet doors, in particular to a switch cabinet with a self-locking shutter mechanism. Background Technique

[0002] A switch cabinet is an electrical device. The external wires of the switch cabinet first enter the main control switch inside the cabinet, and then enter the sub-control switch. Each branch is set as required, generally divided into multiple input terminals and output terminals, and corresponding maintenance doors will be installed at the input terminals and output terminals.

[0003] Therefore, for the shutter locking device of the switch cabinet in the prior art, the publication number is: CN214255401U. When pulling the trolley body outwards, when it moves outwards, the trolley body drives the first rack plate to move outwards through the movable block. When the first rack plate moves, it will drive the meshing gear to rotate. When the gear rotates, it drives the second rack plate to approach the shutter body side. Through the cooperation of the fixed plate and the first chute, the second rack plate drives the shutter body to cover the live static contact through the hinge rod. At this time, the spring returns to the normal position, and under the action of the restoring force, the shutter body stably covers the live static contact.

[0004] However, when pulling the trolley body in the prior art, the two shutter bodies are opened simultaneously. However, in actual operation, it may only be necessary to open one shutter body. Therefore, opening the two shutter bodies simultaneously is likely to expose another live static contact that does not need to be repaired to the air, and there is a risk of damage. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and to propose a switch cabinet with a self-locking shutter mechanism.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A switch cabinet with a self-locking shutter mechanism, including a switch cabinet body and an upper shutter body and a lower shutter body respectively arranged at the input end and the output end and slidably connected to the switch cabinet body door. Both inner walls on both sides of the switch cabinet body are fixedly connected with fixed frames. The two fixed frames are symmetrically distributed, and a latch is inserted on the fixed frame. One end of the latch is sleeved with a lower connecting arm. The swinging end of the lower connecting arm is rotatably connected to a lower rotating arm hinged to the lower shutter body. A torsion spring is also sleeved on the latch. One end of the torsion spring is clamped on the fixed frame, and the other end is inserted with an upper connecting arm rotatably connected to the other end of the latch. The swinging end of the upper connecting arm is rotatably connected to an upper rotating arm hinged to the upper shutter body. Two elastic plates respectively clamped on the upper connecting arm and the lower connecting arm are symmetrically rotatably connected on the fixed frame. The opposite ends of the two elastic plates away from the upper shutter body are connected with a connecting spring.

[0007] Preferably, two guide rails are symmetrically and fixedly connected inside the switch cabinet body at the position of the cabinet door with respect to the upper shutter body. The upper shutter body and the lower shutter body are symmetrically arranged, and the two sides of the upper shutter body and the lower shutter body are slidably connected in an embedded manner with the opposite surfaces of the two guide rails.

[0008] Preferably, the upper connecting arm and the lower connecting arm are symmetrically and staggeredly distributed with respect to the axis of the pin, and the torsion spring is arranged inside the fixing frame.

[0009] Preferably, convex shafts are fixedly connected to both the upper connecting arm and the lower connecting arm. One side of the elastic plate is arranged as an arc-shaped concave surface, and the arc-shaped concave surface of the elastic plate is slidably connected with the outer wall of the convex shaft.

[0010] Preferably, the upper rotating arm and the lower rotating arm on one side of the upper shutter body are in clearance fit and are arranged in parallel.

[0011] Preferably, the opposite sides of the upper shutter body and the lower shutter body both extend outward and are turned over to form folding edges for lapping on the inner wall of the switch cabinet.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] In the present utility model, the position of the upper connecting arm is stabilized by arranging a torsion spring inside the fixing frame. By arranging a connecting spring and with the auxiliary action of the elastic plate, the relative position of the lower connecting arm and the upper connecting arm in the static state is fixed. Also, by respectively installing the upper rotating arm and the lower rotating arm on the upper connecting arm and the lower connecting arm, the relative position of the upper shutter body and the lower shutter body in the static state can be ensured to be fixed. When the upper shutter body is opened, under the linkage action of the upper rotating arm and the upper connecting arm, the elastic plate will be forced to swing, thereby stretching the connecting spring. And by stretching the connecting spring, an upward acting force can be applied to the lower shutter body to prevent the lower shutter body from opening. Conversely, when the lower shutter body is opened downward, the connecting spring will also be stretched, applying a downward acting force to the upper shutter body to prevent the upper shutter body from opening. Therefore, in this solution, by arranging the connecting spring and the torsion spring, the upper shutter body and the lower shutter body can be self-locked to prevent both from being opened simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic three-dimensional structure diagram of a switch cabinet with a self-locking shutter mechanism proposed by the present utility model;

[0015] Figure 2 is a partial structure diagram of the upper shutter body of a switch cabinet with a self-locking shutter mechanism proposed by the present utility model;

[0016] Figure 3 is a switch cabinet with a self-locking shutter mechanism proposed by the present utility model Figure 2Schematic side view structure diagram;

[0017] Figure 4 Schematic structure diagram of the guide rail;

[0018] Figure 5 is Figure 2 Enlarged view of position A in

[0019] Legend: 1. Switchgear cabinet body; 2. Upper shutter main body; 3. Lower shutter main body; 4. Upper rotating arm; 5. Lower rotating arm; 6. Upper connecting arm; 7. Lower connecting arm; 8. Fixed frame; 9. Torsion spring; 10. Bolt; 11. Elastic plate; 12. Convex shaft; 13. Connecting spring; 14. Guide rail; 15. Folding edge. Specific implementation mode

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0022] Such as Figures 1-5As shown in the figure, a switch cabinet with a self-locking flap mechanism includes a switch cabinet body 1, and an upper flap main body 2 and a lower flap main body 3 which are respectively arranged at the input end and the output end and are slidably connected to the cabinet door of the switch cabinet body 1. Fixed frames 8 are fixedly connected to the inner walls on both sides of the switch cabinet body 1. The two fixed frames 8 are symmetrically distributed, and a bolt 10 is inserted into the fixed frame 8. A lower connecting arm 7 is sleeved at one end of the bolt 10. The swinging end of the lower connecting arm 7 is rotatably connected to a lower rotating arm 5 which is hinged to the lower flap main body 3. A torsion spring 9 is also sleeved on the bolt 10. One end of the torsion spring 9 is clamped to the fixed frame 8, and the other end is inserted with an upper connecting arm 6 which is rotatably connected to the other end of the bolt 10. The swinging end of the upper connecting arm 6 is rotatably connected to an upper rotating arm 4 which is hinged to the upper flap main body 2. Two elastic plates 11 which are respectively clamped to the upper connecting arm 6 and the lower connecting arm 7 are symmetrically rotatably connected to the fixed frame 8. The opposite ends of the two elastic plates 11 away from the upper flap main body 2 are connected with a connecting spring 13. The two ends of the arranged connecting spring 13 are connected to the two elastic plates 11 in the form of hooks. Therefore, a pulling force that makes the two approach each other is applied to one end of the two elastic plates 11. Under the action of the rotation connection between the elastic plates 11 and the fixed frame 8, the other ends of the elastic plates 11 move away from each other under the action of the lever principle. By using the clamping action of the side of the elastic plate 11 close to its other end on the upper connecting arm 6 and the lower connecting arm 7, the upper connecting arm 6 and the lower connecting arm 7 are pushed to move away from each other with the bolt 10 as the rotation point. As Figure 2 shown in the figure, that is, the upper connecting arm 6 swings downward, and the lower connecting arm 7 swings upward. When the upper connecting arm 6 swings upward, a downward pulling force is generated on the upper rotating arm 4, so that the upper flap main body 2 has a downward acting force, making the upper flap main body 2 tightly fit against the cabinet door of the switch cabinet body 1, realizing the self-locking of the upper flap main body 2. When the lower connecting arm 7 swings upward, an upward pushing force is generated on the lower rotating arm 5, and then the lower flap main body 3 is pushed to move upward through the lower rotating arm 5. And under the pressure of the lower rotating arm 5, the lower flap main body 3 tightly fits against the other cabinet door of the switch cabinet body 1. In addition, the arranged fixed frame 8 and the bolt 10 on the fixed frame 8 can realize the installation of the upper connecting arm 6 and the lower connecting arm 7, and the torsion spring 9 arranged in the fixed frame 8 can realize the position stability of the upper connecting arm 6, that is, when no external force is applied to the upper connecting arm 6, the torsion spring 9 can prevent the upper connecting arm 6 from swinging. In addition, by using the elastic force of the arranged torsion spring 9, when an acting force for swinging is applied to the upper connecting arm 6, the torsion spring 9 can elastically deform, and then after the acting force on the upper connecting arm 6 is lost, under the elastic reset action of the torsion spring 9, the upper connecting arm 6 swings back to its original position;

[0023] In addition, in this solution, the external forces on the upper connecting arm 6 and the lower connecting arm 7 come from the thrust on the upper valve body 2 and the lower valve body 3. That is, when a person slides the upper valve body 2 upward to open it, the upper rotating arm 4 is driven to swing upward. Therefore, the other end of the upper connecting arm 6 is driven to swing upward by the upper rotating arm 4. Similarly, when a person slides the lower valve body 3 downward to open it, the lower rotating arm 5 is driven to swing downward. Therefore, the other end of the lower connecting arm 7 is driven to swing downward by the lower rotating arm 5:

[0024] Furthermore, when the other end of the upper connecting arm 6 swings upward, under the lever action and the condition that the upper connecting arm 6 is clamped with the elastic plate 11, one end of the elastic plate 11 where the connecting spring 13 is installed is moved away from the elastic plate 11 on the lower connecting arm 7. Thus, the connecting spring 13 is elastically stretched. The stretched connecting spring 13 will exert a force on one end of the elastic plate 11 on the lower connecting arm 7 to swing the elastic plate 11 on the upper connecting arm 6. Therefore, it can be ensured that the lower valve body 3 will not be opened accordingly. On the contrary, when the other end of the lower connecting arm 7 swings downward, under the lever action and the condition that the lower connecting arm 7 is clamped with the elastic plate 11, one end of the elastic plate 11 where the connecting spring 13 is installed is moved away from the elastic plate 11 on the upper connecting arm 6. Thus, the connecting spring 13 is elastically stretched. The stretched connecting spring 13 will exert a force on one end of the elastic plate 11 on the upper connecting arm 6 to swing the elastic plate 11 on the lower connecting arm 7. Therefore, it can be ensured that when one of the upper valve body 2 and the lower valve body 3 is opened, the other is in a self-locking state and will not be opened.

[0025] To guide the smooth sliding of the upper valve body 2 and the lower valve body 3: Two guide rails 14 are symmetrically and fixedly connected inside the switch cabinet body 1 at the position of the cabinet door with respect to the upper valve body 2. The upper valve body 2 and the lower valve body 3 are symmetrically arranged, and the two sides of the upper valve body 2 and the lower valve body 3 are slidably connected in an embedded manner with the opposite surfaces of the two guide rails 14. The two arranged guide rails 14 can limit the sliding directions of the upper valve body 2 and the lower valve body 3.

[0026] To prevent rotational interference between the upper connecting arm 6 and the lower connecting arm 7: The upper connecting arm 6 and the lower connecting arm 7 are symmetrically and staggeredly distributed with respect to the axis of the pin 10. The torsion spring 9 is arranged inside the fixed bracket 8. As shown in Figure 2 、 Figure 3 and Figure 5 shown, the upper connecting arm 6 and the lower connecting arm 7 are of special-shaped settings to ensure that they will not be misaligned during the swinging process.

[0027] To ensure the relative position stability between the elastic plate 11 and the upper connecting arm 6 or the lower connecting arm 7: Convex shafts 12 are fixedly connected to both the upper connecting arm 6 and the lower connecting arm 7. One side of the elastic plate 11 is set as an arc-shaped concave surface, and the arc-shaped concave surface of the elastic plate 11 is slidably connected with the outer wall of the convex shaft 12. The upper rotating arm 4 and the lower rotating arm 5 on one side of the upper valve body 2 are in clearance fit and are arranged in parallel. As shown in Figure 5As shown in the figure, the convex shaft 12 is in contact with the concave surface of the elastic plate 11, ensuring that when the upper connecting arm 6 or the lower connecting arm 7 swings, the elastic plate 11 can be driven to swing smoothly.

[0028] To ensure sealing: on the opposite sides of the upper valve body 2 and the lower valve body 3, there are folding edges 15 extending outward for lapping on the inner wall of the switch cabinet body 1. By installing sealing strips on the folding edges 15 and the opposite sides of the upper valve body 2 and the lower valve body 3, under the pulling force of the connecting spring 13, the upper valve body 2 and the lower valve body 3 are tightly attached to the cabinet door of the switch cabinet body 1, and the installed sealing strips ensure the sealing at the connection.

[0029] Working principle: When a person slides up to open the upper valve body 2, under the connection action of the upper rotating arm 4, the other end of the upper connecting arm 6 swings against the elastic force of the torsion spring 9. When the other end of the upper connecting arm 6 swings upward, under the lever action and the clamping connection between the upper connecting arm 6 and the elastic plate 11, the end of the elastic plate 11 with the connecting spring 13 installed moves away from the elastic plate 11 on the lower connecting arm 7, thereby elastically stretching the connecting spring 13. The stretched connecting spring 13 exerts a force on the end of the elastic plate 11 on the lower connecting arm 7 to swing towards the elastic plate 11 on the upper connecting arm 6. Therefore, it can be ensured that the lower valve body 3 will not be opened accordingly. Or when a person slides down to open the lower valve body 3, it drives the lower rotating arm 5 to swing downward. Therefore, the other end of the lower connecting arm 7 is driven to swing downward by the lower rotating arm 5. When the other end of the lower connecting arm 7 swings downward, under the lever action and the clamping connection between the lower connecting arm 7 and the elastic plate 11, the end of the elastic plate 11 with the connecting spring 13 installed moves away from the elastic plate 11 on the upper connecting arm 6, thereby elastically stretching the connecting spring 13. The stretched connecting spring 13 exerts a force on the end of the elastic plate 11 on the upper connecting arm 6 to swing towards the elastic plate 11 on the lower connecting arm 7. Therefore, it can be ensured that the upper valve body 2 will not be opened.

[0030] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A switchgear cabinet with a self-locking valve mechanism, comprising a switchgear cabinet body (1), and an upper valve body (2) and a lower valve body (3) which are respectively arranged at the input end and the output end and are slidably connected to the cabinet door of the switchgear cabinet body (1), characterized in that: On both inner walls of the switch cabinet body (1), there are fixedly connected fixing frames (8). The two fixing frames (8) are symmetrically distributed, and a bolt (10) is inserted into the fixing frame (8). One end of the bolt (10) is sleeved with a lower connecting arm (7). The swinging end of the lower connecting arm (7) is rotatably connected to a lower rotating arm (5) hinged to the lower shutter body (3). A torsion spring (9) is also sleeved on the bolt (10). One end of the torsion spring (9) is clamped to the fixing frame (8), and the other end is inserted with an upper connecting arm (6) rotatably connected to the other end of the bolt (10). The swinging end of the upper connecting arm (6) is rotatably connected to an upper rotating arm (4) hinged to the upper shutter body (2). On the fixing frame (8), there are symmetrically rotatably connected two elastic plates (11) respectively clamped to the upper connecting arm (6) and the lower connecting arm (7). The opposite ends of the two elastic plates (11) away from the upper shutter body (2) are connected with a connecting spring (13).

2. The switch cabinet with a self-locking valve mechanism according to claim 1, characterized in that: Inside the switch cabinet body (1) at the position of the cabinet door, there are two guide rails (14) symmetrically fixedly connected with respect to the upper shutter body (2). The upper shutter body (2) and the lower shutter body (3) are symmetrically arranged, and the two opposite sides of the upper shutter body (2) and the lower shutter body (3) are slidably connected to the opposite surfaces of the two guide rails (14) in an embedded manner.

3. The switch cabinet with a self-locking valve mechanism according to claim 1, characterized in that: The upper connecting arm (6) and the lower connecting arm (7) are symmetrically and staggeredly distributed with respect to the axis of the bolt (10), and the torsion spring (9) is arranged inside the fixing frame (8).

4. The switch cabinet with a self-locking valve mechanism according to claim 1, characterized in that: Convex shafts (12) are fixedly connected to both the upper connecting arm (6) and the lower connecting arm (7). One side of the elastic plate (11) is arranged with an arc-shaped concave surface, and the arc-shaped concave surface of the elastic plate (11) is slidably connected to the outer wall of the convex shaft (12).

5. The switch cabinet with a self-locking valve mechanism according to claim 1, characterized in that: The upper rotating arm (4) and the lower rotating arm (5) on one side of the upper shutter body (2) are in clearance fit and are arranged in parallel.

6. The switch cabinet with a self-locking valve mechanism according to claim 1, characterized in that: On the opposite sides of the upper shutter body (2) and the lower shutter body (3), there are both outwardly extended folding edges (15) for lapping on the inner wall of the switch cabinet body (1).

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