A wiring structure of an electric leakage circuit breaker

Abstract

The application relates to a wiring structure of a leakage circuit breaker. The wiring structure is mainly used for solving the problem that the wiring structure of the leakage circuit breaker is not easy to install. The wiring structure is characterized in that: a conductive part (21) is arranged on the support and is displaced along with the rotation of the support, one end of the conductive part is electrically connected with the coil, and the conductive part is electrically connected with the wiring piece when the circuit breaker is tripped and is electrically disconnected with the wiring piece when the circuit breaker is tripped. The utility model provides a wiring structure of a leakage circuit breaker, the conductive part is installed on the support, the torsional spring and other parts of the handle do not need to be changed, and the wiring structure is convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of protective switches, specifically to a wiring structure for a residual current circuit breaker. Background Technology

[0002] A circuit breaker is a switching device that can close, carry, and interrupt current under normal circuit conditions, and can close, carry, and interrupt current under abnormal circuit conditions within a specified time.

[0003] The existing residual current circuit breaker (RCCB) structure generally draws power from the circuit board and the testing device at the top or bottom of the RCCB. The side of the circuit board that draws power is the load side, and the side that does not draw power is the incoming line side. If the connection is reversed, the circuit board's power-drawing end becomes the power supply side. Even if the moving contact disconnects the circuit, the circuit board remains energized. If the circuit board is constantly energized, it will quickly burn out the trip coil and the circuit board, leading to damage to the entire circuit breaker.

[0004] To address this, Chinese Patent CN114256033A discloses a method for disconnecting power supply when a circuit breaker trips. This method uses a torsion spring on a handle for operation. However, this requires custom-made torsion springs with special shapes, which are difficult to manufacture. Furthermore, installation is also challenging. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a wiring structure for a residual current circuit breaker, which mainly solves the problem that the wiring structure of the current residual current circuit breaker is not easy to install.

[0006] The technical solution of this utility model is as follows: A wiring structure for a residual current circuit breaker includes a housing, within which a rotatable bracket, a circuit board, a coil, and a terminal block are disposed. A moving contact is mounted on the bracket, and the circuit board is electrically connected to the terminal block. A conductive element is disposed on the bracket and moves with the rotation of the bracket. One end of the conductive element is electrically connected to the coil and is electrically connected to the terminal block when the circuit breaker is tripped, and is electrically disconnected from the terminal block when the circuit breaker is tripped.

[0007] The conductive component has a tubular structure.

[0008] The support is equipped with a column, and the conductive component is fitted onto the circumferential outer wall of the column.

[0009] It also includes a connecting wire, one end of which is welded to the coil and the other end of which is welded to the outer wall of the conductive component.

[0010] The conductive element is made of copper.

[0011] A test button is installed on the housing, and an elastic element is installed at the bottom of the test button.

[0012] The elastic element is a torsion spring, which is electrically connected to the circuit board. One pin of the torsion spring is used to elastically support the test button. When the test button is pressed, the pin of the torsion spring contacts the terminal block.

[0013] The housing has a support wall inside, and the terminal block is disposed on the support wall.

[0014] It also includes at least two positioning walls, with a clamping groove formed between the two positioning walls, and a portion of the wiring piece is disposed in the clamping groove.

[0015] The beneficial effects of this utility model are: This utility model provides a wiring structure for a residual current circuit breaker, which allows the conductive components to be installed on a bracket without modifying the torsion spring and other parts of the handle, making installation convenient. Attached Figure Description

[0016] Figure 1 This is a perspective view of one embodiment of the present invention.

[0017] Figure 2 This is a partial perspective view of one embodiment of the present invention. Figure 1 .

[0018] Figure 3 This is a partial perspective view of one embodiment of the present invention. Figure 2 .

[0019] Figure 4 This is a partial perspective view of one embodiment of the present invention. Figure 3 . Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. A wiring structure for a residual current circuit breaker includes a housing 1, within which a rotatable bracket 2, a circuit board 3, a coil 4, and a connecting piece 5 are disposed. A moving contact is mounted on the bracket. The circuit board is electrically connected to the connecting piece. A conductive element 21 is also included, mounted on the bracket and displaced as the bracket rotates. One end of the conductive element is electrically connected to the coil, and it is electrically connected to the connecting piece when the circuit breaker is open, and electrically disconnected from the connecting piece when the circuit breaker is closed. The moving contact is mounted on the bracket and rotatably mounted within the circuit breaker housing. The bracket is in different positions when the circuit breaker is open and closed, which is prior art and will not be described further. The conductive element is connected to the wiring circuit board. When the circuit breaker is in the open position, the conductive element on the bracket is not connected to the connecting piece, and no circuit can be formed. When the circuit breaker is in the closed position, the conductive element on the bracket contacts the connecting piece, and the conductive element is connected to the coil through a wire. At this time, a circuit is formed between the circuit board and the coil through the connecting piece and the conductive element, allowing power to be drawn.

[0021] In this embodiment, as shown in the figure, the conductive component is a tubular structure. It can be easily installed by sleeve.

[0022] In this embodiment, as shown in the figure, the bracket is provided with a column 22, and the conductive component is fitted onto the circumferential outer wall of the column. It can be installed by means of snap-fit ​​or similar methods.

[0023] In this embodiment, as shown in the figure, a connecting line 11 is also included. One end of the connecting line is welded to the coil, and the other end is welded to the outer wall of the conductive component.

[0024] In this embodiment, as shown in the figure, the conductive element is made of copper.

[0025] In this embodiment, as shown in the figure, a test button 6 is installed on the housing, and an elastic element 61 is installed at the bottom of the test button. The elastic element can be a spring, with one end pressing against the bottom of the button and the other end pressing against the inner wall of the housing.

[0026] In this embodiment, as shown in the figure, the elastic element is a torsion spring, which is electrically connected to the circuit board. One pin of the torsion spring is used to elastically support the test button. When the test button is pressed, the pin of the torsion spring contacts the terminal block. Simultaneously, the terminal block can also be used to supply power to the test button; when the button is pressed, the test button is connected to the circuitry on the circuit board.

[0027] In this embodiment, as shown in the figure, a support wall 12 is provided inside the housing, and the wiring piece is disposed on the support wall 15. A clamping wall can be provided above the support wall, and the clamping wall and the support wall are used to install and fix the wiring piece, so that it will not move when the bracket is in contact.

[0028] In this embodiment, as shown in the figure, it further includes at least two positioning walls, with a clamping groove 13 formed between the two positioning walls, and part of the wiring piece is disposed in the clamping groove. The other end is fixed.

[0029] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A wiring structure for a residual current circuit breaker, comprising a housing (1), wherein a rotatable bracket (2), a circuit board (3), a coil (4), and a connecting piece (5) are disposed within the housing, a moving contact is mounted on the bracket, and the circuit board is electrically connected to the connecting piece, characterized in that: Also includes The conductive element (21) is disposed on the bracket and moves with the rotation of the bracket. One end of the conductive element is electrically connected to the coil and is electrically connected to the terminal block when the circuit breaker is tripped, and is electrically disconnected from the terminal block when the circuit breaker is tripped.

2. The wiring structure of an electric leakage circuit breaker according to claim 1, characterized in that: The conductive component has a tubular structure.

3. The wiring structure of an electric leakage circuit breaker according to claim 1 or 2, characterized in that: The support is provided with a column (22), and the conductive component is fitted onto the circumferential outer wall of the column.

4. The wiring structure of an electric leakage circuit breaker according to claim 1, characterized by: It also includes a connecting wire (11), one end of which is welded to the coil and the other end is welded to the outer wall of the conductive component.

5. The wiring structure of an electric leakage circuit breaker according to claim 1, characterized in that: The conductive element is made of copper.

6. The wiring structure of an electric leakage circuit breaker according to claim 1, characterized by: A test button (6) is installed on the housing, and an elastic element (61) is installed at the bottom of the test button.

7. The wiring structure of an electric leakage circuit breaker according to claim 6, characterized by: The elastic element is a torsion spring, which is electrically connected to the circuit board. One pin of the torsion spring is used to elastically support the test button. When the test button is pressed, the pin of the torsion spring contacts the terminal block.

8. The wiring structure of an electric leakage circuit breaker according to any one of claims 1 to 7, characterized in that: The housing is provided with a support wall (12), and the wiring piece is disposed on the support wall.

9. The wiring configuration of an electrical leakage circuit breaker of claim 1, wherein: It also includes at least two positioning walls, with a clamping groove (13) formed between the two positioning walls, and part of the wiring piece is disposed in the clamping groove.

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