CN216957934U - Earth leakage circuit breaker - Google Patents

Abstract

The application discloses residual current circuit breaker, including box body, pressing piece and current conducting plate, the box body of box body for insulating material, the pressing piece is insulating material's pressing piece, pressing piece slidable mounting is on the box body, the current conducting plate sets up on the pressing piece, still includes the spring, the spring sets up between pressing piece and box body, spring one end directly or indirectly supports the pressing piece, and the spring other end directly or indirectly supports the box body. The utility model has the following beneficial effects: the spring is arranged between the pressing piece and the box body, so that the pressing piece after being pressed is driven by the spring to return to the position before being pressed, and the reliability is high.

Description

Earth leakage circuit breaker

Technical Field

The utility model relates to the field of electrical equipment, in particular to a residual current circuit breaker.

Background

The leakage circuit breaker is an electrical apparatus commonly used at present, in order to ensure the reliability of the leakage circuit breaker during operation, the current leakage circuit breaker needs to be tested at intervals during operation, a circuit breaker is disclosed in patent publication CN209571377U, the circuit breaker realizes springback after being pressed through a test button (reference number is 2 in the document) and an elastic matching part (reference number is 21 in the document), the elastic matching part is easy to fall off and break from the test button, and the reliability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a leakage circuit breaker aiming at the problems.

The technical scheme adopted by the utility model is as follows:

the utility model provides a residual current circuit breaker, includes box body, pressing piece and current conducting plate, the box body of box body for insulating material, the pressing piece is the pressing piece of insulating material, pressing piece slidable mounting is on the box body, the current conducting plate sets up on the pressing piece, still includes the spring, the spring sets up between pressing piece and box body, spring one end directly or indirectly supports the pressing piece, and the spring other end directly or indirectly supports the box body.

In this kind of circuit breaker, the pressing member is installed on the box wall of box body, and a part of pressing member is located the box body, and a part of pressing member is located outside the box body, through set up the spring between box body and pressing member, the pressing member when pressing down in by the box body extroversion box body, thereby the spring can receive the extrusion and take place the compression, removes the extrusion force to the pressing member, and the spring can drive the pressing member and kick-back to the position before the beginning motion.

To sum up, this kind of circuit breaker utilizes the spring to drive the position before pressing is replied to the pressing piece after pressing through setting up the spring between pressing piece and box body, and the reliability is strong.

Optionally, one end of the spring is fixed on the box body or the pressing piece or the conductive plate.

One end of the spring is fixed on the box body or the pressing piece or the conductive plate, so that the mounting stability of the spring can be improved.

Optionally, the spring is fixed to the conductive plate.

One end of the spring is fixed on the conductive plate, and the other end of the spring is in a free-moving state.

Optionally, the box body further comprises an electronic component board, a first contact pin and a second contact pin, wherein the first contact pin and the second contact pin are both arranged in the box body and are both connected with the electronic component board through leads.

All communicate with the electronic component board on specific first contact pin and the second contact pin, when the current conducting plate was pressed to when contacting with first contact pin and second contact pin, realized promptly that switching on of first contact pin and second contact pin (belong to the simulation under the conducting state and leak).

Optionally, the conductive plate is a "several" shaped conductive plate.

The structure of a similar hole is arranged in the conductive plate in the shape of a Chinese character 'ji', and the existence of the hole can play a role in clamping the spring, so that the spring can be more stable in stretching and retracting, and the twisting deviation cannot occur.

Optionally, the electronic component board further comprises a zero sequence current transformer, and the zero sequence current transformer is connected with the electronic component board through a wire.

The zero sequence current transformer monitors zero sequence current, when electric leakage or electric shock of people occurs or a first contact pin and a second contact pin are conducted by a conductive plate, zero sequence current can be generated in the zero sequence current transformer, and when the zero sequence current transformer senses the zero sequence current, corresponding safety measures are taken by an electronic component board.

Optionally, the electronic component box further comprises a trip coil, wherein the trip coil is arranged in the box body and is connected with the electronic component board through a lead.

The trip coil is an actuating mechanism of the electronic component board, and when the zero sequence current transformer senses the zero sequence current, the electronic component board functions as the trip coil, and the trip coil operates to cut off the circuit (i.e., the safety measures described above).

Optionally, the box body is provided with a wiring terminal.

The wiring terminal is used for inserting and fixing the electric wire.

The utility model has the beneficial effects that: the spring is arranged between the pressing piece and the box body, so that the pressing piece after being pressed is driven by the spring to return to the position before being pressed, and the reliability is high.

Description of the drawings:

figure 1 is a schematic diagram of an earth leakage circuit breaker,

figure 2 is a schematic view of the installation relationship of the pressing member on the box body,

fig. 3 is a schematic view of the operating principle of the pressing member.

The figures are numbered: 101. a first pin; 102. a second pin; 2. a pressing member; 3. a trip coil; 4. a box body; 5. a binding post; 6. an electronic component board; 7. a zero sequence current transformer; 8. a conductive plate; 9. a spring.

The specific implementation mode is as follows:

the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, fig. 2 and fig. 3, a leakage circuit breaker includes a box body 4, a pressing member 2 and a conductive plate 8, the box body 4 is made of an insulating material, the pressing member 2 is slidably mounted on the box body 4, the conductive plate 8 is arranged on the pressing member 2, the leakage circuit breaker further includes a spring 9, the spring 9 is arranged between the pressing member 2 and the box body 4, one end of the spring 9 directly or indirectly supports the pressing member 2, and the other end of the spring 9 directly or indirectly supports the box body 4.

In this kind of circuit breaker, pressing member 2 installs on the box wall of box body 4, and 2 parts of pressing member are located outside box body 4, through set up the spring between box body 4 and pressing member 2, and pressing member 2 is when pressing by box body 4 is outside to box body 4 in, thereby the spring can receive the extrusion and take place the compression, removes the extrusion force to pressing member 2, and the spring can drive pressing member 2 and kick-backs to the position before the beginning motion.

Taking the direction in fig. 3 as an example, when the pressing member 2 moves downward, the conductive plate 8 on the pressing member 2 conducts the first pin 101 and the second pin 102, and when the pressure is removed, the pressing member 2 with the conductive plate 8 moves upward under the action of the spring 9, and the first pin 101 and the second pin 102 are no longer conducted.

Specifically, the first pin 101 and the second pin 102 may be copper sheets, aluminum sheets, or other conductive metal sheets.

In this kind of circuit breaker specifically, box body 4 is plastics box body 4, and pressing member 2 is plastics pressing member 2, offers porosely on the box wall of box body 4, and pressing member 2 installs on the hole of box body 4, and a part of pressing member 2 is located outside box body 4.

In summary, in this kind of circuit breaker, by providing the spring 9 between the pressing piece 2 and the case 4, the pressing piece 2 after being pressed is driven by the spring 9 to return to the position before being pressed, and the reliability is high.

As shown in fig. 1, 2 and 3, one end of the spring is fixed to the case 4 or the pressing member 2 or the conductive plate 8.

The spring is fixed at one end to the case 4 or the pressing member 2 or the conductive plate 8, so that the mounting stability of the spring can be improved.

As shown in fig. 1, 2 and 3, the spring is fixed to the conductive plate 8.

One end of the spring is fixed on the conductive plate 8, and the other end of the spring is in a free-moving state.

As shown in fig. 1, fig. 2 and fig. 3, the electronic component module further includes an electronic component board 6, a first pin 101 and a second pin 102, wherein the first pin 101 and the second pin 102 are both disposed in the box body 4, and the first pin 101 and the second pin 102 are both connected to the electronic component board 6 through wires.

Specifically, the first pin 101 and the second pin 102 are both connected to the electronic component board 6, and when the conductive board 8 is pressed to contact with the first pin 101 and the second pin 102, the first pin 101 and the second pin 102 are conducted (i.e., the first pin 101 and the second pin 102 are in a conduction state, which is analog leakage).

As shown in fig. 1, 2, and 3, the conductive plate 8 is a "zigzag" shaped conductive plate 8.

The inside of the conductive plate 8 in the shape of a Chinese character 'ji' has a structure similar to a hole, and the existence of the hole can play a role in clamping the spring, so that the spring can be ensured to be more stable in stretching and contracting, and the twisting deviation cannot occur.

As shown in fig. 1, fig. 2 and fig. 3, the electronic component board further includes a zero sequence current transformer 7, and the zero sequence current transformer 7 is connected to the electronic component board 6 through a wire.

The zero sequence current transformer 7 monitors zero sequence current, when leakage or electric shock occurs or the first contact pin 101 is conducted with the second contact pin 102 through the conductive plate 8, zero sequence current can be generated in the zero sequence current transformer 7, and when the zero sequence current transformer 7 senses the zero sequence current, the electronic component board 6 takes corresponding safety measures.

As shown in fig. 1, fig. 2 and fig. 3, the electronic component board further includes a trip coil 3, the trip coil 3 is disposed in the box body 4, and the trip coil 3 is connected to the electronic component board 6 through a wire.

The trip coil 3 is an actuating mechanism of the electronic component board 6, and when the zero sequence current transformer 7 senses the zero sequence current, the electronic component board 6 operates the trip coil 3, and the trip coil 3 operates to cut off the circuit (i.e., the above safety measures).

As shown in fig. 1, 2 and 3, the box 4 is provided with a terminal.

The wiring terminal is used for inserting and fixing the electric wire.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and can be directly or indirectly applied to other related fields of technology.

Claims (8)

1. The utility model provides a residual current circuit breaker, includes box body, pressing piece and current conducting plate, the box body of box body for insulating material, the pressing piece is the pressing piece of insulating material, pressing piece slidable mounting is on the box body, the current conducting plate sets up on the pressing piece, its characterized in that still includes the spring, the spring sets up between pressing piece and box body, spring one end directly or indirectly supports the pressing piece, and the spring other end directly or indirectly supports the box body.

2. An earth leakage breaker as claimed in claim 1, characterized in that the spring is fixed at one end to the box or to the pressing member or to the conductive plate.

3. A residual current circuit breaker as claimed in claim 2, characterized in that said spring is fixed to the conductive plate.

4. The residual current circuit breaker according to claim 1, further comprising an electronic component board and a first pin and a second pin, both of which are disposed in the case, both of which are connected to the electronic component board through a wire.

5. A residual current circuit breaker as claimed in claim 4, characterized in that said conductive plate is a "several" -shaped conductive plate.

6. The residual current circuit breaker according to claim 4, further comprising a zero sequence current transformer connected to the electronic component board by a wire.

7. The residual current circuit breaker as claimed in claim 4, further comprising a trip coil disposed within the case, the trip coil being connected to the electronic component board by a wire.

8. A residual current circuit breaker as claimed in claim 1, characterized in that the casing is provided with a terminal.

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