Electric leakage accessory device of circuit breaker

Abstract

Provided is a leakage accessory device of a circuit breaker. The electric leakage accessory module mainly solves the problems that an existing electric leakage accessory module is unstable in power connection and prone to shaking. The power distribution box is characterized by further comprising a power connection piece (3), and part of the power connection piece penetrates through the through groove to be arranged outside the shell and is used for being electrically connected and matched with the circuit breaker in an inserted mode. The positioning sheet (31) is arranged on the power connection sheet and is arranged in the shell; the pressing plate (4) is detachably connected with the shell or connected with the shell in an opening and closing mode, and the pressing plate is provided with a pressing part (41) used for fixedly pressing the positioning piece on the inner wall of the shell. According to the electric leakage accessory device of the circuit breaker provided by the utility model, the electric connection sheet is fixed through the pressing plate, so that the installation is more stable and convenient.

Description

Technical Field

[0001] The utility model relates to the field of circuit breaker parts, and particularly relates to a leakage accessory device for a circuit breaker. Background Art

[0002] The leakage module is an optional part of an intelligent circuit breaker. At present, a current transformer and a wire are provided in the leakage module. The wire passes through the current transformer, and a circuit board is installed in the housing. Due to the soft connection between the power connection piece of the conventional leakage module and the wire, it is easy to move back and forth or even swing in the through slot on the housing, affecting the quality of power connection. Content of the Utility Model

[0003] In order to overcome the deficiencies of the background art, the utility model provides a leakage accessory device for a circuit breaker, mainly solving the problems that the existing leakage accessory module has unstable power connection and is prone to shaking.

[0004] The technical solution of the utility model is as follows.

[0005] A leakage accessory device for a circuit breaker includes a housing, a current transformer and a circuit board are arranged in the housing, and a through slot is arranged on the housing; it further includes

[0006] A power connection piece, part of the power connection piece passes through the through slot and is arranged outside the housing for electrical plug-in cooperation with the circuit breaker;

[0007] A positioning piece, which is arranged on the power connection piece and is arranged in the housing;

[0008] A pressing plate, which is detachably or openably connected to the housing, and a pressing part for fixedly pressing the positioning piece against the inner wall of the housing is arranged on the pressing plate.

[0009] A plurality of positioning rods are arranged in the housing, and a positioning groove for installing the current transformer is formed between the plurality of positioning rods.

[0010] At least one positioning rod is provided with a barb buckled on the current transformer.

[0011] A plurality of clamping grooves are arranged on the housing, and clamping blocks matched with the clamping grooves are arranged on the pressing plate.

[0012] The positioning piece and the power connection piece are integrally bent.

[0013] The housing includes a first housing and a second housing which are detachably connected. The power connection piece is arranged on the first housing. A wiring groove is arranged on the second housing, and a wiring frame opposite to the wiring groove is arranged in the second housing.

[0014] A partition is arranged on the first housing opposite to the wiring frame. One end of the pressing part contacts the partition, and the other end contacts the positioning piece.

[0015] The housing includes a first cavity and a second cavity, which are communicated through a through groove for wire routing. The mutual inductor and the power connection piece are installed in the first cavity, and the circuit board is installed in the second cavity.

[0016] It further includes a protective cover, which includes an opening groove, and the housing is installed in the opening groove.

[0017] The inner wall of the second housing is provided with a sunk groove, and it further includes a second power connection piece. Part of the second power connection piece is arranged in the sunk groove, and part of the second power connection piece extends into the wiring frame.

[0018] The beneficial effect of the present utility model is that the present utility model provides a leakage protection accessory device for a circuit breaker. The power connection piece is fixed by a pressing plate, so the installation is more stable and convenient for installation. Description of the Drawings

[0019] Figure 1 It is an exploded schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 It is a partial exploded schematic diagram of an embodiment of the present utility model.

[0021] Figure 3 It is a partial cross-sectional view of an embodiment of the present utility model.

[0022] Figure 4 It is a partial three-dimensional schematic diagram of an embodiment of the present utility model.

[0023] Figure 5 It is a partial exploded schematic diagram of an embodiment of the present utility model.

[0024] Figure 6 It is a partial three-dimensional schematic diagram of an embodiment of the present utility model. Detailed Embodiment

[0025] The present utility model will be further described below with reference to the drawings: As shown in the figure, a leakage protection accessory device for a circuit breaker includes a housing 1, a mutual inductor 2 and a circuit board are arranged in the housing, and a through groove 11 is arranged on the housing; it further includes a power connection piece 3, part of the power connection piece passes through the through groove and is arranged outside the housing for electrical plug-in cooperation with the circuit breaker; a positioning piece 31, which is arranged on the power connection piece and is arranged in the housing; a pressing plate 4, which is detachably or openably connected to the housing, and a pressing part 41 for fixing and pressing the positioning piece against the inner wall of the housing is arranged on the pressing plate. The pressing plate can be detachably installed on the housing or installed on the housing through a rotating shaft, etc. When the pressing plate is installed, its pressing part will press against the positioning piece, and thus the power connection piece is fixed to prevent it from shaking and facilitate the plugging with the circuit breaker.

[0026] In this embodiment, as shown in the figure, a plurality of positioning rods 12 are provided inside the housing, and a positioning groove for installing the mutual inductor is formed between the plurality of positioning rods. The positioning rods are arranged on the circumferential outer wall of the mutual inductor to position the mutual inductor and prevent the mutual inductor from shifting.

[0027] In this embodiment, as shown in the figure, at least one of the positioning rods is provided with a barb 121 that is buckled on the mutual inductor. The barb on the positioning rod presses on the outer wall of the shaft of the mutual inductor to achieve fixation.

[0028] In this embodiment, as shown in the figure, a plurality of clamping grooves 13 are provided on the housing, and clamping blocks 42 that are matched with the clamping grooves are provided on the pressing plate. By providing the clamping grooves on the housing, the pressing plate can be installed by matching with the clamping blocks, and screw installation is not required.

[0029] In this embodiment, as shown in the figure, the positioning piece and the power connection piece are integrally bent.

[0030] In this embodiment, as shown in the figure, the housing includes a first housing 101 and a second housing 102 that are detachably connected. The power connection piece is arranged on the first housing. A wiring groove 1021 is provided on the second housing, and a wiring frame 1022 that is oppositely arranged to the wiring groove is provided inside the second housing. The wiring frame is a prior art and will not be described in detail. The first housing and the second housing can be disassembled and assembled by screws.

[0031] In this embodiment, as shown in the figure, a partition 1011 is provided on the first housing opposite to the wiring frame. One end of the pressing portion contacts the partition, and the other end contacts the positioning piece. Through the isolation of the partition, the creepage distance is increased, and it is safer to use.

[0032] In this embodiment, as shown in the figure, the housing includes a first cavity and a second cavity 104. The first cavity and the second cavity are connected through a through groove 105 for wire routing. The mutual inductor and the power connection piece are installed in the first cavity, and the second cavity is used for installing the circuit board. Separating the circuit board from other power connection components increases its service life.

[0033] In this embodiment, as shown in the figure, a protective cover 5 is further included. The protective cover includes an opening groove 51, and the housing is installed in the opening groove. The entire housing is installed in the protective cover to prevent damage.

[0034] In this embodiment, as shown in the figure, a sunk groove 1023 is provided on the inner wall of the second housing. A second power connection piece 1024 is further included. Part of the second power connection piece is arranged in the sunk groove, and part of the second power connection piece extends into the wiring frame. The second power connection piece is installed in the sunk groove and is fixed by a second barb 123.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0037] The embodiments described with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation on the present utility model. The embodiments should not be regarded as a limitation on the present utility model, but any improvement made based on the spirit of the present utility model should be within the protection scope of the present utility model.

Claims

1. A leakage current accessory device for a circuit breaker, comprising a housing (1), a mutual inductor (2) and a circuit board being arranged in the housing, and a through slot (11) being arranged on the housing; the characteristics are: Also includes A power connection piece (3), part of which passes through the through slot and is arranged outside the housing, and is used for electrical plug-in cooperation with the circuit breaker; A positioning sheet (31) is arranged on the power connection sheet and is arranged in the housing; A pressing plate (4) is detachably or openably connected to the shell, and a pressing portion (41) is provided on the pressing plate for fixing and pressing the positioning sheet against the inner wall of the shell.

2. The leakage current accessory device of a circuit breaker according to claim 1, characterized in that: A plurality of positioning rods (12) are arranged in the housing, and positioning grooves for installing the mutual inductor are formed between the plurality of positioning rods.

3. The leakage current accessory device of a circuit breaker according to claim 2, characterized in that: At least one positioning rod is provided with a barb (121) which is buckled onto the mutual inductor.

4. The leakage current accessory device of a circuit breaker according to claim 1, characterized in that: The housing is provided with a plurality of clamping grooves (13), and the pressure plate is provided with a clamping block (42) that matches the clamping grooves.

5. The leakage current accessory device of a circuit breaker according to claim 1, characterized in that: The positioning sheet and the power connection sheet are formed by bending integrally.

6. The leakage current accessory device of a circuit breaker according to claim 2, characterized in that: The housing comprises a first housing (101) and a second housing (102) which are detachably connected, the power connection plate is arranged on the first housing, a wiring slot (1021) is arranged on the second housing, and a wiring frame (1022) arranged opposite to the wiring slot is arranged in the second housing.

7. The leakage current accessory device of a circuit breaker according to claim 6, characterized in that: The first shell is provided with a partition (1011) relative to the wiring frame, one end of the pressing portion is in contact with the partition, and the other end is in contact with the positioning piece.

8. The leakage current accessory device of a circuit breaker according to claim 1, characterized in that: The housing comprises a first cavity and a second cavity (104), the first cavity and the second cavity being connected via a through slot (105) for wiring, the mutual inductor and the power connection sheet being installed in the first cavity, and the circuit board being installed in the second cavity.

9. The leakage current accessory device of a circuit breaker according to claim 1, characterized in that: It also comprises a shield (5), the shield comprising an opening slot (51), and the shell is installed in the opening slot.

10. A leakage accessory device for a circuit breaker according to claim 7, characterized in that: The inner wall of the second shell is provided with a recessed groove (1023), and also includes a second power terminal (1024), part of the second power terminal is arranged in the recessed groove, and part of the second power terminal extends into the wiring frame.

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