N-pole external lead structure of an electric leakage circuit breaker

Abstract

The utility model provides a N pole external wire structure of leakage circuit breaker. Mainly solve the current leakage circuit breaker's conductive plate and current transformer wire do not isolate the problem. Its characterized in be further including conductive plate (7), with second wire (12) between the connection of conductive sheet, one end is used for external wire, baffle (6) is detachably installed in the shell, the upper end surface of baffle is equipped with the wire slot (61) for the first wire passing, and the wire board is located below the baffle. The utility model provides a N pole external wire structure of leakage circuit breaker, and the wire of external conductive plate and current transformer is separated through baffle, and use is safer.

Description

Technical Field

[0001] This utility model relates to the field of residual current circuit breakers, specifically to a structure for the N-pole external conductor of a residual current circuit breaker. Background Technology

[0002] Chinese patent application number 2025202330052 describes an N-pole wiring structure for a residual current circuit breaker. When this structure is applied to a residual current circuit breaker, its conductive plate is not isolated from the wires inside the residual current circuit breaker (especially the wires between the current transformer and the circuit board), which may lead to short circuits. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a structure for the external conductor of the N pole of a residual current circuit breaker, which mainly solves the problem that the conductive plate of the current residual current circuit breaker is not isolated from the conductor of the current transformer.

[0004] The technical solution of this utility model is as follows:

[0005] A residual current circuit breaker (RCCB) N-pole external conductor structure includes a housing, within which a circuit board, a current transformer, and a conductive plate electrically connected to a moving contact are disposed. The current transformer and the circuit board are connected via a first conductor.

[0006] A conductive plate is connected to the conductive sheet via a second wire, one end of which is used for connecting an external wire.

[0007] A partition is detachably installed inside the housing. The upper surface of the partition is provided with a routing groove for the first conductor to pass through. The conductive plate is located below the partition.

[0008] The housing contains an arc-extinguishing chamber, which is mounted on the partition.

[0009] The housing is provided with a number of positioning protrusions, and the partition is provided with a first positioning groove that matches the positioning protrusions.

[0010] The partition plate is provided with a second positioning groove for installation with the arc-extinguishing chamber.

[0011] A second wiring groove is formed between the bottom end face of the partition and the inner wall of the housing for the conductive plate to pass through.

[0012] The partition plate is provided with a raised rib, the arc extinguishing chamber is located on one side of the raised rib, and the wiring groove is located on the other side of the raised rib.

[0013] The housing is provided with a baffle wall, the circuit board is located on one side of the baffle wall, and the conductive plate is located on the other side of the baffle wall.

[0014] The beneficial effects of this utility model are: This utility model provides a structure for the N-pole external conductor of a leakage current circuit breaker, which separates the external conductive plate and the conductor of the current transformer through a partition, making it safer to use. Attached Figure Description

[0015] Figure 1 This is an internal perspective view of one embodiment of the present utility model.

[0016] Figure 2 This is a partial explosion diagram of one embodiment of the present invention.

[0017] Figure 3 This is a partial perspective view of one embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. A structure for the N-pole external conductor of a residual current circuit breaker includes a housing 1. Inside the housing are a circuit board 2, a current transformer 3, and a conductive sheet 4 electrically connected to a moving contact 5. The current transformer is connected to the circuit board via a first conductor 11. The structure also includes a conductive plate 7, connected to the conductive sheet via a second conductor 12, one end of which is used for connecting an external conductor. A partition 6 is detachably installed inside the housing. The upper surface of the partition has a wiring groove 61 for the first conductor to pass through. The conductive plate is located below the partition. After the partition is installed, the conductive plate is located below the partition, and the first conductor is located above the partition, thus isolating them. The moving contact and the conductive sheet can be connected via a conductor. Current enters through the terminal frame and is connected when the stationary and moving contacts are closed. The current transformer is sleeved outside the second conductor.

[0019] In this embodiment, as shown in the figure, an arc-extinguishing chamber 13 is provided inside the housing, and the arc-extinguishing chamber is installed on the partition. The partition is replaceable for easy maintenance.

[0020] In this embodiment, as shown in the figure, the housing is provided with a plurality of positioning protrusions 14, and the partition is provided with a first positioning groove 62 that matches the positioning protrusions. The first positioning groove and the positioning protrusion can be installed by snap-fit, and multiple positioning protrusions can be provided.

[0021] In this embodiment, as shown in the figure, the partition plate is provided with a second positioning groove 63 for installation with the arc-extinguishing chamber. After the arc-extinguishing chamber is placed, circumferential positioning can be achieved, which is the groove on the partition plate.

[0022] In this embodiment, as shown in the figure, a second wiring groove 64 is formed between the bottom end face of the partition and the inner wall of the housing for the conductive plate to pass through. This further facilitates the passage of the conductive plate.

[0023] In this embodiment, as shown in the figure, the partition plate is provided with a raised rib 65, the arc-extinguishing chamber is located on one side of the raised rib, and the wiring groove is located on the other side of the raised rib. This increases the creepage distance and extends the service life.

[0024] In this embodiment, as shown in the figure, a baffle 15 is provided inside the housing, the circuit board is disposed on one side of the baffle, and the conductive plate is disposed on the other side of the baffle. This increases the creepage distance and prevents damage to the circuit board.

[0025] 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.

[0026] 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.

[0027] 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 structure for the N-pole external conductor of a residual current circuit breaker, comprising a housing (1), wherein a circuit board (2), a current transformer (3), and a conductive sheet (4) electrically connected to a moving contact (5) are disposed within the housing, and the current transformer is connected to the circuit board via a first conductor (11), characterized in that: Also includes The conductive plate (7) is connected to the conductive sheet via a second wire (12), one end of which is used for connecting an external wire; A partition (6) is detachably installed inside the housing. The upper surface of the partition is provided with a wiring groove (61) for the first wire to pass through. The conductive plate is located below the partition.

2. The N-pole external conductor structure of a residual current circuit breaker according to claim 1, characterized in that: The housing is provided with an arc-extinguishing chamber (13), which is installed on the partition.

3. The N-pole external conductor structure of a residual current circuit breaker according to claim 1, characterized in that: The housing is provided with a plurality of positioning protrusions (14), and the partition is provided with a first positioning groove (62) that is adapted to the positioning protrusions.

4. The N-pole external conductor structure of a residual current circuit breaker according to claim 2, characterized in that: The partition plate is provided with a second positioning groove (63) for installation with the arc-extinguishing chamber.

5. The N-pole external conductor structure of a residual current circuit breaker according to claim 1, characterized in that: A second wiring groove (64) is formed between the bottom end face of the partition and the inner wall of the housing for the conductive plate to pass through.

6. The structure of the N-pole external conductor of a residual current circuit breaker according to claim 2, characterized in that: The partition plate is provided with a raised rib (65), the arc extinguishing chamber is located on one side of the raised rib, and the wiring groove is located on the other side of the raised rib.

7. The N-pole external conductor structure of a residual current circuit breaker according to any one of claims 1-6, characterized in that: The housing is provided with a baffle (15), the circuit board is located on one side of the baffle, and the conductive plate is located on the other side of the baffle.

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