Novel circuit breaker operating mechanism

Abstract

The utility model relates to the field of circuit breakers, in particular to a novel circuit breaker operating mechanism, and aims to overcome the defects that in the prior art, a plurality of circuits cannot be used for communication at the same time, so that the actual use effect of the mechanism is poor, automatic disconnection cannot be carried out when a certain circuit is short-circuited, and faults of other circuits are easily caused. According to the scheme, the device comprises a first box body; the second box body is fixedly connected to the top of the first box body; the first circuits are fixedly connected to the inner wall of one side of the first box body, and the number of the first circuits is two; the first connecting sheets are fixedly connected to the two ends of the two first lines; the first resistance wire is fixedly connected to the two first circuits; according to the invention, a plurality of lines can be used at the same time for connection, so that the actual use effect of the mechanism is improved, automatic disconnection can be carried out when a certain line is short-circuited, and faults of other lines are avoided.

Description

Technical Field

[0001] This application relates to the field of circuit breakers, and more particularly to a new type of circuit breaker operating mechanism. Background Art

[0002] A circuit breaker can be used to distribute electric energy, start asynchronous motors infrequently, protect power supply lines and motors, etc. When they encounter serious overload, short circuit, undervoltage and other faults, it can automatically cut off the circuit. Its function is equivalent to the combination of a fuse switch and an over- and under-thermal relay. Moreover, generally no parts need to be changed after breaking the fault current. At present, it has been widely used. An operating mechanism is a device used to close a circuit breaker, keep the circuit breaker in the closed state, and quickly trip the circuit breaker. It has a crucial impact on the output characteristics of the circuit breaker.

[0003] The patent document with the publication number CN 203895290 U discloses a new type of circuit breaker operating mechanism, including a closing and tripping power system, a rocker arm transfer assembly and a circuit breaker output shaft connected in sequence. A moving contact is installed on the circuit breaker output shaft. The rocker arm transfer assembly includes a rocker arm, a support seat and a positioning shaft. A positioning hole is provided in the middle of the rocker arm. A bearing is installed in the positioning hole. The bearing is sleeved and fixed at one end of the positioning shaft. The other end of the positioning shaft is fixedly connected to the support seat. This new type of circuit breaker operating mechanism reduces the friction between the positioning hole and the positioning shaft through the bearing, rotates flexibly, has fast closing and tripping speeds, good stability, and is not easy to wear between the hole and the shaft, which is beneficial to ensuring the service life and performance of the circuit breaker.

[0004] However, in the prior art of the above new type of circuit breaker operating mechanism, there are disadvantages that multiple lines cannot be connected simultaneously, resulting in poor actual use effect of the mechanism, and it cannot automatically disconnect when a certain line is short-circuited, easily causing faults in other lines. Therefore, we propose a new type of circuit breaker operating mechanism to solve the above problems. Summary of the Utility Model

[0005] The purpose of the present utility model is to propose a new type of circuit breaker operating mechanism to solve the disadvantages in the prior art that multiple lines cannot be connected simultaneously, resulting in poor actual use effect of the mechanism, and it cannot automatically disconnect when a certain line is short-circuited, easily causing faults in other lines.

[0006] The new type of circuit breaker operating mechanism provided by this application adopts the following technical solutions:

[0007] The new type of circuit breaker operating mechanism includes:

[0008] A first box body;

[0009] A second box body, fixedly connected to the top of the first box body;

[0010] The first circuit is fixedly connected to one inner wall of the first box body, and there are two of them;

[0011] The first connecting piece is fixedly connected to both ends of the two first circuits;

[0012] The first resistance wire is fixedly connected to the two first circuits;

[0013] The first bimetallic strip is fixedly connected to the two first circuits;

[0014] The first connecting rod is fixedly connected to one side of the two first bimetallic strips;

[0015] The second circuit is fixedly connected to one inner wall of the first box body, and there are two of them;

[0016] The transmission component is slidably connected to one inner wall of the second box body.

[0017] Further, one end of the spring is fixedly connected with a spring sleeve, one end of the spring sleeve is slidably connected with the top inner wall of the second box body, a rotating shaft is rotatably connected to the fixing frame, an opening and closing switch is fixedly connected to the rotating shaft, and a switch port is fixedly connected to one side of the second box body, and the opening and closing switch is rotatably connected to the switch port.

[0018] Further, a card slot is fixedly connected to one side of the support plate, a buckle is fixedly connected to one side of the push rod, and a spring is fixedly connected to the top of the push rod.

[0019] Further, a push rod is fixedly connected to the top of the connecting plate, the push rod is matched with a fixing frame, and a support plate is fixedly connected to the top inner wall of the second box body.

[0020] Further, two fixing plates are fixedly connected to the tops of the two first circuits and the two second circuits, and fixing grooves are fixedly connected to one side of each of the two fixing plates.

[0021] Further, second connecting rods are fixedly connected to one side of each of the two second bimetallic strips, and one end of each of the two first connecting rods and the two second connecting rods is fixedly connected to the same connecting plate.

[0022] Further, the transmission component includes second connecting pieces fixedly connected to both ends of the two second circuits, second resistance wires are fixedly connected to the two second circuits, and second bimetallic strips are fixedly connected to the two second circuits.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. This solution can achieve the connection of multiple circuits. First, the circuits to be connected are connected from the four first connectors, and then the other circuits to be connected are connected from the four second connectors, improving the actual use effect of the mechanism.

[0025] 2. When the two first connecting rods and the two second connecting rods move in this solution, the two first connecting rods and the two second connecting rods can drive the two first bimetallic strips and the two second bimetallic strips to move respectively, disconnecting the circuit, thereby protecting other circuits and preventing other circuits from malfunctioning. Description of the Drawings

[0026] Figure 1 is the front view schematic diagram of the new circuit breaker operating mechanism in Embodiment 1 of the present application;

[0027] Figure 2 is the side view schematic diagram of the new circuit breaker operating mechanism in Embodiment 1 of the present application;

[0028] Figure 3 is Figure 2 the enlarged schematic diagram of part A in

[0029] Reference numerals: 1, first box body; 2, second box body; 3, first circuit; 4, first connector; 5, first resistance wire; 6, first bimetallic strip; 7, first connecting rod; 8, second circuit; 9, second connector; 10, second resistance wire; 11, second bimetallic strip; 12, second connecting rod; 13, connecting plate; 14, fixing plate; 15, fixing groove; 16, fixing frame; 17, support plate; 18, clamping groove; 19, buckle; 20, spring; 21, spring sleeve; 22, rotating shaft; 23, opening and closing switch; 24, switch port; 25, push rod. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0031] Embodiment 1

[0032] Refer to Figures 1 - 3 , the new circuit breaker operating mechanism includes:

[0033] First box body 1;

[0034] Second box body 2, fixedly connected to the top of the first box body 1;

[0035] First circuit 3, fixedly connected to one inner wall of the first box body 1 and provided with two;

[0036] The first connecting piece 4 is fixedly connected to both ends of the two first circuits 3;

[0037] The first resistance wire 5 is fixedly connected to the two first circuits 3;

[0038] The first bimetallic strip 6 is fixedly connected to the two first circuits 3;

[0039] The first connecting rod 7 is fixedly connected to one side of the two first bimetallic strips 6;

[0040] The second circuit 8 is fixedly connected to one side inner wall of the first box body 1, and there are two;

[0041] The transmission component is slidably connected to one side inner wall of the second box body 2.

[0042] Specifically, one end of the spring 20 is fixedly connected with a spring sleeve 21, and one end of the spring sleeve 21 is slidably connected to the top inner wall of the second box body 2, and a rotating shaft 22 is rotatably connected to the fixing frame 16, and an opening and closing switch 23 is fixedly connected to the rotating shaft 22, and a switch port 24 is fixedly connected to one side of the second box body 2, and the opening and closing switch 23 is rotatably connected to the switch port 24.

[0043] Specifically, a card slot 18 is fixedly connected to one side of the support plate 17, and a buckle 19 is fixedly connected to one side of the push rod 25, and a spring 20 is fixedly connected to the top of the push rod 25.

[0044] Specifically, a push rod 25 is fixedly connected to the top of the connecting plate 13, the push rod 25 is matched with a fixing frame 16, and a support plate 17 is fixedly connected to the top inner wall of the second box body 2.

[0045] Specifically, two fixing plates 14 are fixedly connected to the tops of the two first circuits 3 and the two second circuits 8, and fixing grooves 15 are fixedly connected to one side of each of the two fixing plates 14.

[0046] Specifically, a second connecting rod 12 is fixedly connected to one side of each of the two second bimetallic strips 11, and one end of the two first connecting rods 7 and the two second connecting rods 12 is fixedly connected to the same connecting plate 13.

[0047] Specifically, the transmission component includes second connecting pieces 9 fixedly connected to both ends of the two second circuits 8, second resistance wires 10 are fixedly connected to the two second circuits 8, and second bimetallic strips 11 are fixedly connected to the two second circuits 8.

[0048] The implementation principle of the novel circuit breaker operating mechanism in the embodiments of this application is as follows: The circuit to be connected is connected from the four first connecting pieces 4, and then other circuits to be connected are connected from the four second connecting pieces 9. The two fixing plates 14 fix the circuits through the two fixing grooves 15 respectively. After the circuit is energized, the current passes through the two first circuits 3 and the two second circuits 8 respectively, and then through the two first resistance wires 5 and the two second resistance wires 10, through the two first bimetallic strips 6 and the two second bimetallic strips 11, and is led out from the two first connecting pieces 4 and the two second connecting pieces 9 at one end. When a fault occurs in a certain circuit, the two first resistance wires 5 and the two second resistance wires 10 will continuously heat up due to the circuit fault until the two first resistance wires 5 and the two second resistance wires 10 react with the two first bimetallic strips 6 and the two second bimetallic strips 11, causing the two first bimetallic strips 6 and the two second bimetallic strips 11 to deform. As a result, the two first bimetallic strips 6 drive the two first connecting rods 7 to move respectively, or the two second bimetallic strips 11 drive the two second connecting rods 12 to move respectively. When the two first connecting rods 7 or the two second connecting rods 12 move, they drive the connecting plate 13 to move. The connecting plate 13 drives the push rod 25 to move. The push rod 25 drives the buckle 19 to move, causing the buckle 19 to disengage from the card slot 18. The spring 20 contracts, thereby driving the push rod 25 to move. The push rod 25 drives the connecting plate 13 to move. The connecting plate 13 drives the two first connecting rods 7 and the two second connecting rods 12 to move, causing the two first connecting rods 7 and the two second connecting rods 12 to drive the two first bimetallic strips 6 and the two second bimetallic strips 11 to move respectively, resulting in the disconnection of the circuit, thus protecting other circuits and preventing other circuits from malfunctioning. When the push rod 25 moves, it drives the rotating shaft 22 to rotate, and the rotation 22 drives the opening and closing switch 23 to close.

[0049] Embodiment 2

[0050] The difference between this embodiment and Embodiment 1 is that an alarm is fixedly connected to the top of the second box body 2. One side of the push rod 25 is fixedly connected with a third circuit, and the third circuit is in a disconnected state from the alarm. When the push rod 25 is driven by the spring 20 to reset, the push rod 25 drives the third circuit to be connected to the alarm, causing the alarm to start, preventing the circuit fault from being difficult to detect.

[0051] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A new circuit breaker operating mechanism, characterized in that: include: A first housing (1); A second box body (2) is fixedly connected to the top of the first box body (1); The first circuit (3) is fixedly connected to an inner wall of one side of the first box (1), and two of the first circuits are provided; A first connecting piece (4) fixedly connected to two ends of the two first lines (3); A first resistance wire (5) fixedly connected to the two first circuits (3); A first bimetallic strip (6) fixedly connected to the two first circuits (3); A first connecting rod (7) fixedly connected to one side of the two first bimetallic strips (6); The second circuit (8) is fixedly connected to an inner wall of one side of the first box (1), and two second circuits are provided; A transmission assembly is slidably connected to an inner wall of one side of the second box body (2).

2. The novel circuit breaker operating mechanism according to claim 1 is characterized in that: The transmission assembly comprises a second connecting piece (9) fixedly connected to both ends of the two second circuits (8), and the two second circuits (8) are both fixedly connected with a second resistance wire (10), and the two second circuits (8) are both fixedly connected with a second bimetallic strip (11).

3. The novel circuit breaker operating mechanism according to claim 2 is characterized in that: One side of each of the two second bimetallic strips (11) is fixedly connected to a second connecting rod (12), and one end of the two first connecting rods (7) and the two second connecting rods (12) is fixedly connected to the same connecting plate (13).

4. The novel circuit breaker operating mechanism according to claim 3 is characterized in that: Two fixing plates (14) are fixedly connected to the tops of the two first circuits (3) and the two second circuits (8), and one side of the two fixing plates (14) is fixedly connected to a fixing groove (15).

5. The novel circuit breaker operating mechanism according to claim 4 is characterized in that: A push rod (25) is fixedly connected to the top of the connecting plate (13), a fixing frame (16) is matched on the push rod (25), and a support plate (17) is fixedly connected to the inner wall of the top of the second box body (2).

6. The novel circuit breaker operating mechanism according to claim 5 is characterized in that: A slot (18) is fixedly connected to one side of the support plate (17), a buckle (19) is fixedly connected to one side of the push rod (25), and a spring (20) is fixedly connected to the top of the push rod (25).

7. The novel circuit breaker operating mechanism according to claim 6 is characterized in that: One end of the spring (20) is fixedly connected to a spring sleeve (21), and one end of the spring sleeve (21) is slidably connected to the top inner wall of the second box body (2), and a rotating shaft (22) is rotatably connected to the fixed frame (16), and an on / off switch (23) is fixedly connected to the rotating shaft (22), and a switch port (24) is fixedly connected to one side of the second box body (2), and the on / off switch (23) is rotatably connected to the switch port (24).

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