Tripping device for frame circuit breaker

Abstract

The utility model relates to a tripping device for a frame circuit breaker, which comprises a tripping frame and a placing plate, the tripping frame is arranged on the front side of the placing plate, and a tripping assembly for protecting an electrical device from overload is arranged in the tripping frame. The tripping assembly comprises a detection device, an electric push rod, a first guide plate, a second guide plate, a push plate, a first U-shaped plate, a second U-shaped plate, a connecting plate, a semicircular convex block and a tripping spring, a notch is formed in the front side of the tripping frame, the first U-shaped plate is fixedly installed in the tripping frame, and the second U-shaped plate is fixedly installed in the tripping frame. According to the utility model, the connecting plate can be limited through the arranged tripping assembly, and the connecting plate can be pushed away through the push plate, so that the connection between the first U-shaped plate and the second U-shaped plate is disconnected, and the situation that the contact between the connecting plate and the second U-shaped plate is poor due to the touch connection between the connecting plate and the second U-shaped plate is prevented.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a tripping device for a frame circuit breaker. Background Technology

[0002] A frame circuit breaker is a device used in low-voltage power distribution systems. It is mainly used to protect electrical installations from damage caused by overload, short circuit and other fault currents. The tripping device is one of its key components, which is used to automatically disconnect the circuit when a circuit fault is detected, so as to protect the electrical system from damage.

[0003] A search revealed that Chinese Patent CN219226182U discloses a tripping device for a frame circuit breaker, including a crossbar with a trip unit detachably mounted on it. A spring-loaded insert for connecting to the crossbar is provided below the trip unit. Wiring terminals are provided on both the left and right sides of the trip unit. A fault detector, a circuit breaker protection mechanism, and a knob are provided on the top of the trip unit. A connecting wire is provided between the fault detector and the circuit breaker protection mechanism.

[0004] In actual use, this patent has the following drawbacks:

[0005] During the use of the tripping device, the motor needs to drive the connecting rod to rotate, causing the connecting rod to disconnect from the connecting wires on both sides. This results in a non-contact connection between the connecting rod and the connecting wires, which can lead to poor contact and reduce the effectiveness of the tripping device. Utility Model Content

[0006] In view of the technical problem that the connection between the pole and the connecting wire in the prior art is a contact connection, there is a problem of poor contact when the pole and the connecting wire are connected. This utility model provides a tripping device for a frame circuit breaker.

[0007] The technical solution adopted by this utility model is: a tripping device for a frame circuit breaker, including a tripping frame and a placement plate. The tripping frame is disposed on the front side of the placement plate. A tripping assembly for protecting electrical devices from overload is disposed inside the tripping frame. The tripping assembly includes a detection device, an electric push rod, a first guide plate, a second guide plate, a push plate, a first U-shaped plate, a second U-shaped plate, a connecting plate, a semi-circular protrusion, and a tripping spring. A slot is opened on the front side of the tripping frame. The first U-shaped plate is fixedly installed inside the tripping frame. The second U-shaped plate is fixedly installed inside the tripping frame. The connecting plate is rotatably installed between the first U-shaped plates. A sliding groove is opened on one side of the connecting plate. The semi-circular protrusion is slidably installed in the sliding groove. The tripping spring is fixedly installed between the semi-circular protrusion and the connecting plate. A semi-circular groove is opened inside the second U-shaped plate.

[0008] Furthermore, the detection device is disposed within the tripping frame, and a door panel is disposed within the slot.

[0009] Furthermore, the electric push rod is fixedly installed inside the release frame, the first guide plate is fixedly installed inside the release frame, the second guide plate is slidably installed on one side of the first guide plate, the push plate is fixedly installed on the front side of the second guide plate, and the push plate is connected to the output end of the electric push rod.

[0010] Furthermore, the front side of the placement plate is provided with a connecting assembly that facilitates the maintenance of the tripping device by the staff. The connecting assembly includes a first ring plate, an arc plate, a second ring plate, a first limiting block, a second limiting block, a connecting frame, a connecting spring, a connecting block, and a pressing plate. The first ring plate is fixedly installed on the front side of the placement plate.

[0011] Furthermore, the arc-shaped plate is fixedly installed on the inner side of the first ring plate, and a first slot and a second slot are provided on the inner side of the first ring plate.

[0012] Furthermore, the second ring plate is disposed inside the first ring plate, the first limiting block is fixedly installed on the outside of the second ring plate, a first through groove is provided between the second ring plate and the first limiting block, and the second limiting block is slidably installed in the first through groove.

[0013] Furthermore, the connecting frame is fixedly installed at the front end of the second ring plate, a second through groove is provided between the connecting frame and the second ring plate, the release frame is fixedly installed on the front side of the connecting frame, the connecting spring is fixedly installed between the second limiting blocks, square grooves are provided on both sides of the connecting frame, the pressing plate is slidably installed in the square groove, and the connecting block is fixedly installed between the pressing plate and the second limiting block.

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

[0015] 1. This utility model can limit the connecting plate through the tripping component, and can push the connecting plate open by the push plate to disconnect the connection between the first U-shaped plate and the second U-shaped plate, thereby preventing the connecting plate and the second U-shaped plate from touching and connecting, which would lead to poor contact between the first U-shaped plate and the second U-shaped plate, thus increasing the effectiveness of the tripping device.

[0016] 2. Furthermore, the first guide plate of this utility model can limit the second guide plate, thereby improving the stability of the push plate during movement.

[0017] 3. The present invention also improves the efficiency of the tripping device by making it easier for workers to remove the tripping device from the placement plate for maintenance and replacement through the connecting component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the tripping assembly structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connecting component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the first ring plate structure of this utility model.

[0022] The following are labeled in the diagram: 1. Tripping frame; 2. Placement plate; 3. Tripping assembly; 4. Detection device; 5. Electric push rod; 6. First guide plate; 7. Second guide plate; 8. Push plate; 9. First U-shaped plate; 10. Second U-shaped plate; 11. Connecting plate; 12. Semi-circular protrusion; 13. Tripping spring; 14. Groove; 15. Slide groove; 16. Semi-circular groove; 17. Door panel; 18. Connecting assembly; 19. First ring plate; 20. Arc plate; 21. Second ring plate; 22. First limiting block; 23. Second limiting block; 24. Connecting frame; 25. Connecting spring; 26. Connecting block; 27. Press plate; 28. First slot; 29. ​​Second slot; 30. First through groove; 31. Second through groove; 32. Square groove. Detailed Implementation

[0023] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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] The following is in conjunction with the appendix Figures 1-4 The present invention will be further described below.

[0026] In order to solve the problems existing in the background art, this application proposes the following technical solution: a tripping device for a frame circuit breaker.

[0027] The device includes a tripping frame 1 and a placement plate 2. The tripping frame 1 is located on the front side of the placement plate 2. The tripping frame 1 contains a tripping assembly 3 for protecting electrical devices from overload. The tripping assembly 3 includes a detection device 4, an electric push rod 5, a first guide plate 6, a second guide plate 7, a push plate 8, a first U-shaped plate 9, a second U-shaped plate 10, a connecting plate 11, a semi-circular protrusion 12, and a tripping spring 13. A slot 14 is provided on the front side of the tripping frame 1. The first U-shaped plate 9 is fixedly installed inside the tripping frame 1. The second U-shaped plate 10 is fixedly installed inside the tripping frame 1. The connecting plate 11 is rotatably installed between the first U-shaped plates 9. A sliding groove 15 is provided on one side of the connecting plate 11. The semi-circular protrusion 12 is slidably installed in the sliding groove 15. The tripping spring 13 is fixedly installed between the semi-circular protrusion 12 and the connecting plate 11. A semi-circular groove 16 is provided inside the second U-shaped plate 10.

[0028] The tripping assembly 3 can limit the connection plate 11, and the push plate 8 can push the connection plate 11 away to disconnect the connection between the first U-shaped plate 9 and the second U-shaped plate 10, thereby preventing the connection plate 11 and the second U-shaped plate 10 from touching and connecting, which would lead to poor contact between the first U-shaped plate 9 and the second U-shaped plate 10, thus increasing the effectiveness of the tripping device.

[0029] Reference Figure 1 In this embodiment, the detection device 4 is installed inside the release frame 1, and the door panel 17 is installed inside the slot 14.

[0030] Reference Figure 2 In this embodiment, the electric push rod 5 is fixedly installed inside the release frame 1, the first guide plate 6 is fixedly installed inside the release frame 1, the second guide plate 7 is slidably installed on one side of the first guide plate 6, and the push plate 8 is fixedly installed on the front side of the second guide plate 7. The push plate 8 is connected to the output end of the electric push rod 5.

[0031] The first guide plate 6 can limit the second guide plate 7, thereby improving the stability of the push plate 8 when it moves.

[0032] Reference Figure 3 In this embodiment, the front side of the placement plate 2 is provided with a connecting component 18 for easy maintenance of the tripping device by the staff. The connecting component 18 includes a first ring plate 19, an arc plate 20, a second ring plate 21, a first limiting block 22, a second limiting block 23, a connecting frame 24, a connecting spring 25, a connecting block 26, and a pressing plate 27. The first ring plate 19 is fixedly installed on the front side of the placement plate 2.

[0033] The connection component 18 allows staff to easily remove the tripping device from the placement plate 2 for maintenance and replacement, thereby improving the efficiency of the tripping device.

[0034] The arc-shaped plate 20 is fixedly installed on the inner side of the first ring plate 19. The first ring plate 19 has a first slot 28 and a second slot 29.

[0035] The second ring plate 21 is disposed inside the first ring plate 19, the first limiting block 22 is fixedly installed on the outside of the second ring plate 21, a first through groove 30 is provided between the second ring plate 21 and the first limiting block 22, and the second limiting block 23 is slidably installed in the first through groove 30.

[0036] The connecting frame 24 is fixedly installed at the front end of the second ring plate 21. A second through groove 31 is provided between the connecting frame 24 and the second ring plate 21. The release frame 1 is fixedly installed on the front side of the connecting frame 24. The connecting spring 25 is fixedly installed between the second limit blocks 23. Square grooves 32 are provided on both sides of the connecting frame 24. The pressing plate 27 is slidably installed in the square groove 32. The connecting block 26 is fixedly installed between the pressing plate 27 and the second limit block 23.

[0037] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview:

[0038] When the release device is needed, first hold the connecting frame 24 and press the button 27. The button 27, through the connecting block 26, drives the second limiting block 23 to retract. The second limiting block 23 presses the connecting spring 25, causing the first limiting block 22 to insert into the first slot 28 and rotate, so that the first through slot 30 corresponds to the second slot 29. Referring to the above steps, release the button 27. The connecting spring 25 presses the second limiting block 23, causing the second limiting block 23 to insert into the second slot 29, so that... The connecting frame 24 is fixed in a limiting position. When the detection device 4 detects damage from overload, short circuit, or other fault currents, the electric push rod 5 is activated to press the connecting plate 11 through the push plate 8, causing the connecting plate 11 to move and disconnect the connection between the first U-shaped plate 9 and the second U-shaped plate 10. When the connecting plate 11 connects the first U-shaped plate 9 and the second U-shaped plate 10, the door panel 17 is opened and the connecting plate 11 is pushed. The release spring 13 presses the semi-circular protrusion 12, causing it to limit the connection plate 11.

[0039] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0040] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A tripping device for a frame circuit breaker, characterized in that, The device includes a tripping frame (1) and a placement plate (2). The tripping frame (1) is located on the front side of the placement plate (2). A tripping assembly (3) for protecting electrical devices from overload is provided inside the tripping frame (1). The tripping assembly (3) includes a detection device (4), an electric push rod (5), a first guide plate (6), a second guide plate (7), a push plate (8), a first U-shaped plate (9), a second U-shaped plate (10), a connecting plate (11), a semi-circular protrusion (12), and a tripping spring (13). A slot (14) is provided on the front side of the tripping frame (1). The first U-shaped plate (9) is fixedly installed inside the release frame (1), the second U-shaped plate (10) is fixedly installed inside the release frame (1), the connecting plate (11) is rotatably installed between the first U-shaped plates (9), a sliding groove (15) is provided on one side of the connecting plate (11), the semi-circular protrusion (12) is slidably installed in the sliding groove (15), the release spring (13) is fixedly installed between the semi-circular protrusion (12) and the connecting plate (11), and a semi-circular groove (16) is provided inside the second U-shaped plate (10).

2. The tripping device for a frame circuit breaker according to claim 1, characterized in that, The detection device (4) is installed inside the release frame (1), and a door panel (17) is installed inside the slot (14).

3. The tripping device for a frame circuit breaker according to claim 1, characterized in that, The electric push rod (5) is fixedly installed inside the release frame (1), the first guide plate (6) is fixedly installed inside the release frame (1), the second guide plate (7) is slidably installed on one side of the first guide plate (6), the push plate (8) is fixedly installed on the front side of the second guide plate (7), and the push plate (8) is connected to the output end of the electric push rod (5).

4. The tripping device for a frame circuit breaker according to claim 1, characterized in that, The front side of the placement plate (2) is provided with a connecting assembly (18) for easy maintenance of the tripping device by the staff. The connecting assembly (18) includes a first ring plate (19), an arc plate (20), a second ring plate (21), a first limiting block (22), a second limiting block (23), a connecting frame (24), a connecting spring (25), a connecting block (26), and a pressing plate (27). The first ring plate (19) is fixedly installed on the front side of the placement plate (2).

5. A tripping device for a frame circuit breaker according to claim 4, characterized in that, The arc-shaped plate (20) is fixedly installed on the inner side of the first ring plate (19). The first ring plate (19) has a first slot (28) and a second slot (29) on its inner side.

6. A tripping device for a frame circuit breaker according to claim 4, characterized in that, The second ring plate (21) is disposed inside the first ring plate (19), the first limiting block (22) is fixedly installed on the outside of the second ring plate (21), a first through groove (30) is provided between the second ring plate (21) and the first limiting block (22), and the second limiting block (23) is slidably installed in the first through groove (30).

7. A tripping device for a frame circuit breaker according to claim 6, characterized in that, The connecting frame (24) is fixedly installed at the front end of the second ring plate (21). A second through groove (31) is provided between the connecting frame (24) and the second ring plate (21). The release frame (1) is fixedly installed on the front side of the connecting frame (24). The connecting spring (25) is fixedly installed between the second limiting blocks (23). Square grooves (32) are provided on both sides of the connecting frame (24). The pressing plate (27) is slidably installed in the square groove (32). The connecting block (26) is fixedly installed between the pressing plate (27) and the second limiting block (23).

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