A circuit breaker with a double-break structure

Abstract

This utility model discloses a circuit breaker with a double-break structure, relating to the field of circuit breaker technology. The circuit breaker with a double-break structure includes an insulating base plate. Two insulating support frames are fixedly connected to the upper surface of the insulating base plate. Two opening and closing mechanisms are fixedly connected to the upper surface of the insulating support frames. An inclined plate is fixedly connected to the upper surface of the right insulating support frame. A sliding groove extending from the right surface of the inclined plate is formed on the left side surface. A sliding block is slidably connected inside the sliding groove. The left and right sides of the sliding block extend out of the sliding groove, respectively. A conductive rod is fixedly connected to the left side surface of the sliding block. The conductive rod is slidably connected to the conductive frame of the opening and closing mechanism. By utilizing the limiting plate, the position of the sliding block can be quickly locked after it moves to a designated location, and the locking process requires no human intervention, effectively reducing the complexity of operation.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a circuit breaker with a double-break structure. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions and close, carry, and interrupt current under abnormal circuit conditions within a specified time. The arc voltage shared by double-break contacts is different from that of single-break contacts. The arc voltage per contact is halved, making it easier to extinguish the arc. Therefore, it is more widely used.

[0003] For example, the Chinese utility model patent with publication number CN213936076U allows personnel to operate away from conductive equipment when opening and closing circuits, ensuring personal safety. However, when switching states, it is necessary to use external positioning bolts to fix the position of the rubber rod. Although this can ensure stability, it makes the operation steps more cumbersome. In view of this, we propose a circuit breaker with a double-break structure. Utility Model Content

[0004] The purpose of this invention is to provide a circuit breaker with a double-break structure to solve the problem of the cumbersome operation steps caused by the need to fix the position of the rubber rod with external positioning bolts.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circuit breaker with a double-break structure, comprising an insulating base plate, two insulating support frames fixedly connected to the upper surface of the insulating base plate, two opening and closing mechanisms fixedly connected to the upper surface of the insulating support frames, an inclined plate fixedly connected to the upper surface of the right insulating support frame, a sliding groove extending from the right surface of the left side of the inclined plate, a sliding block slidably connected inside the sliding groove, the left and right sides of the sliding block extending out of the sliding groove respectively, a conductive rod fixedly connected to the left side of the sliding block, the conductive rod slidably connected to the conductive frame of the opening and closing mechanism, a mounting plate fixedly connected to the right side of the inclined plate, a displacement rod slidably sleeved inside the mounting plate, both ends of the displacement rod slidingly penetrating out of the mounting plate, an integrating plate fixedly connected to the rear end of the displacement rod, a limit plate fixedly connected to the front surface of the integrating plate, and a limit component provided on the displacement rod.

[0006] The above technical solution makes it easier to fix the position of the sliding block and reduces the number of operation steps.

[0007] Preferably, the limiting component includes a connecting plate, which is fixedly connected to the front end of the two displacement rods, and a spring is fixedly connected to the rear surface of the mounting plate.

[0008] The above technical solution allows the spring to automatically lock the sliding block after it passes, eliminating the need for manual operation.

[0009] Preferably, the rear end of the spring is fixedly connected to the front surface of the integrated plate, and a handle is fixedly connected to the right side surface of the integrated plate.

[0010] The above technical solution allows the operator to easily pull the integrated plate to unlock it using a handle.

[0011] Preferably, the outer surface of the grip is covered with a rubber sleeve.

[0012] The above technical solution can increase friction with the hand and improve the feel by using a rubber sleeve.

[0013] Preferably, the surfaces of the two limiting plates that are close to each other are inclined, and rollers are provided on the upper and lower surfaces of the sliding block.

[0014] The above technical solution can reduce the friction when the sliding block squeezes the limiting plate by using rollers, thus protecting the sliding block and the limiting plate.

[0015] Preferably, the roller contacts the limiting plate, a conductive bolt is fixedly connected to the upper surface of the insulating support frame, a nut is threaded onto the outer surface of the conductive bolt, and a rotating groove is formed on the lower surface of the nut.

[0016] The above technical solution allows for the use of nuts to secure the wires.

[0017] Preferably, a pressure ring is provided on the lower surface of the nut, and a rotating protrusion is fixedly connected to the upper surface of the pressure ring, the rotating protrusion being rotatably connected inside the rotating groove.

[0018] The above technical solution utilizes a pressure ring to prevent the nut from directly contacting the wire and causing rotational friction damage to the wire.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This circuit breaker with a double-break structure utilizes a limit plate to quickly lock the position of the sliding block after it has moved to a designated location. The locking process does not require human intervention, effectively reducing the complexity of operation.

[0021] 2. This circuit breaker with a double-break structure can not only reduce the friction when the limit plate is squeezed by rollers, but also prevent damage to the wires caused by rotational friction when the wires are tightened by nuts by pressure rings, thus protecting the wires to a certain extent. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of the structure of a circuit breaker with a double-break point structure according to the present invention;

[0024] Figure 2 This is a schematic diagram of the sliding groove of this utility model;

[0025] Figure 3 This is a plan view of the present invention;

[0026] Figure 4 This is a cross-sectional view of the nut of this utility model;

[0027] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0028] Reference numerals: 1. Insulating base plate; 2. Insulating support frame; 3. Opening and closing mechanism; 4. Inclined plate; 5. Sliding groove; 6. Sliding block; 7. Conductive rod; 8. Mounting plate; 9. Displacement rod;

[0029] 10. Integration plate; 11. Limiting plate; 12. Connecting plate; 13. Spring; 14. Handle; 15. Rubber sleeve; 16. Roller; 17. Conductive bolt; 18. Nut; 19. Rotating groove; 20. Pressure ring; 21. Rotating protrusion. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] Please see Figures 1-5This utility model provides a technical solution: a circuit breaker with a double-break structure, including an insulating base plate 1. Two insulating support frames 2 for providing an installation platform are fixedly connected to the upper surface of the insulating base plate 1. Two opening and closing mechanisms 3 are fixedly connected to the upper surface of the insulating support frames. An inclined plate 4 for providing installation space is fixedly connected to the upper surface of the right insulating support frame 2. A sliding groove 5 extending from the right surface of the inclined plate 4 for limiting movement is formed on the left surface. A sliding block 6, which cooperates to limit the movement trajectory, is slidably connected inside the sliding groove 5. The left and right surfaces of the sliding block 6 extend out of the sliding groove 5, respectively. A conductive rod 7 for conducting electricity is fixedly connected to the left surface of the sliding block 6. The conductive rod 7 is slidably connected to the conductive frame of the opening and closing mechanism 3. The right side surface of the inclined plate 4 is fixedly connected to the mounting plate 8, which provides installation space and limits the position. The mounting plate 8 is slidably fitted with a displacement rod 9 for limiting the position. Both the front and rear ends of the displacement rod 9 slide through the outside of the mounting plate 8. The rear end of the displacement rod 9 is fixedly connected to the integration plate 10 for power transmission. The front side surface of the integration plate 10 is fixedly connected to the limiting plate 11 for limiting the movement of the sliding block 6. The displacement rod 9 is provided with a limiting component. With the setting of the limiting plate 11, the position of the sliding block 6 can be quickly locked after the sliding block 6 moves to the designated location. The locking process does not require human intervention, which effectively reduces the complexity of operation.

[0032] The limiting assembly includes a connecting plate 12 for limiting the displacement rods 9 from the mounting plate 8. The connecting plate 12 is fixedly connected to the front ends of the two displacement rods 9. A spring 13 for automatically resetting the limiting plate 11 is fixedly connected to the rear surface of the mounting plate 8. The rear end of the spring 13 is fixedly connected to the front surface of the integrated plate 10. A handle 14 for easy operation is fixedly connected to the right surface of the integrated plate 10. A rubber sleeve 15 to increase friction with the hand is fitted on the outer surface of the handle 14. The adjacent surfaces of the two limiting plates 11 are both inclined. Rollers 16 are provided on the upper and lower surfaces of the sliding block 6 to reduce the friction between the sliding block 6 and the limiting plate 11. The rollers 16 contact the limiting plate 11. The upper surface of the insulating support frame 2 is fixedly connected with a conductive bolt 17 for wire connection. The outer surface of the conductive bolt 17 is threaded with a nut 18 for fixing the wire. The lower surface of the nut 18 is provided with a rotating groove 19. The lower surface of the nut 18 is provided with a pressure ring 20 for protecting the wire. The upper surface of the pressure ring 20 is fixedly connected with a rotating protrusion 21 that cooperates with the rotating groove 19 to limit the pressure ring 20. The rotating protrusion 21 is rotatably connected inside the rotating groove 19. This not only reduces the friction when the roller 16 is used to squeeze the limiting plate 11, but also prevents the rotational friction from damaging the wire when the nut 18 is used to tighten the wire, thus protecting the wire to a certain extent.

[0033] The opening and closing mechanism 3 described in the text is an existing structure, including an insulating support plate fixedly connected to the insulating support frame 2, a T-shaped groove opened on the insulating support plate, a T-shaped rod sliding inside the T-shaped groove, and a conductive frame fixed on the T-shaped rod. This is prior art, and for details, please refer to patent publication number CN213936076U. Since it is not the main structure, it will not be described in detail.

[0034] Working principle: When the conductive rod 7 is moved to the uppermost or lowermost position via the sliding block 6, the sliding block 6 can be directly controlled to move. During movement, the sliding block 6's trajectory is restricted by the sliding groove 5. Since rollers 16 are provided on both the upper and lower surfaces of the sliding block 6, and the limiting plate 11 has an inclined surface, the inclined surface presses against the limiting plate 11 to make it move. The rollers 16 reduce friction. When the limiting plate 11 moves, it synchronously drives the integrated plate 10 to move. When the integrated plate 10 moves, it synchronously drives the displacement rod 9 to move. When the integrated plate 10 moves, it compresses the spring 13. After the sliding block 6 passes, the elastic force of the spring 13 causes the sliding block 6 to move... When the limiting plate 11 is reset, the plane of the limiting plate 11 contacts the sliding block 6, preventing the sliding block 6 from moving. When it is necessary to control the movement of the sliding block 6 again, simply pull the integrated plate 10 with the handle 14 to move it synchronously, which will drive the limiting plate 11 to move synchronously. At the same time, when connecting the wire to the conductive bolt 17, the wire can be wrapped around the outer surface of the conductive bolt 17 first, and then the nut 18 can be tightened. When the nut 18 rotates and descends, it will drive the pressure ring 20 to move synchronously. After the pressure ring 20 contacts the wire, it will be unable to rotate by using the friction with the wire, thus avoiding the problem of friction with the wire when simply tightening with the nut 18.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model 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 utility model.

Claims

1. A circuit breaker having a double-break structure, comprising an insulating base plate (1), characterized in that: Two insulating support frames (2) are fixedly connected to the upper surface of the insulating base plate (1). Two opening and closing mechanisms (3) are fixedly connected to the upper surface of the insulating support frames. An inclined plate (4) is fixedly connected to the upper surface of the right insulating support frame (2). A sliding groove (5) extending from the right surface of the inclined plate (4) is provided on the left side surface. A sliding block (6) is slidably connected inside the sliding groove (5). The left and right sides of the sliding block (6) extend out of the sliding groove (5). The left side surface of the sliding block (6) A conductive rod (7) is fixedly connected to the inclined plate (4), and the conductive rod (7) is slidably connected to the conductive frame of the opening and closing mechanism (3). An installation plate (8) is fixedly connected to the right side surface of the inclined plate (4). A displacement rod (9) is slidably sleeved inside the installation plate (8). Both the front and rear ends of the displacement rod (9) slide through the outside of the installation plate (8). An integration plate (10) is fixedly connected to the rear end of the displacement rod (9). A limit plate (11) is fixedly connected to the front side surface of the integration plate (10). A limit component is provided on the displacement rod (9).

2. The circuit breaker having a double-break structure according to claim 1, characterized in that: The limiting assembly includes a connecting plate (12), which is fixedly connected to the front end of two displacement rods (9), and a spring (13) is fixedly connected to the rear surface of the mounting plate (8).

3. A circuit breaker with a double-break structure according to claim 2, characterized in that: The rear end of the spring (13) is fixedly connected to the front surface of the integrated plate (10), and a handle (14) is fixedly connected to the right surface of the integrated plate (10).

4. The circuit breaker having a dual-break structure according to claim 3, characterized in that: The outer surface of the grip (14) is covered with a rubber sleeve (15).

5. The circuit breaker having a dual-break structure according to claim 1, characterized in that: The surfaces of the two limiting plates (11) that are close to each other are both inclined, and the upper and lower surfaces of the sliding block (6) are provided with rollers (16).

6. The circuit breaker having a dual-break structure according to claim 5, characterized in that: The roller (16) contacts the limiting plate (11), and the upper surface of the insulating support frame (2) is fixedly connected with a conductive bolt (17).

7. The circuit breaker having a dual-break structure according to claim 6, characterized in that: The outer surface of the conductive bolt (17) is threaded with a nut (18), and the lower surface of the nut (18) is provided with a rotating groove (19).

8. The circuit breaker having a dual-break structure according to claim 7, characterized in that: The lower surface of the nut (18) is provided with a pressure ring (20), and the upper surface of the pressure ring (20) is fixedly connected with a rotating protrusion (21), which is rotatably connected inside the rotating groove (19).

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