Circuit breaker with earth leakage protection accessory

Abstract

A circuit breaker with an earth leakage protection accessory is characterized by further comprising a first positioning structure arranged on a circuit breaker shell and a second positioning structure arranged on an accessory shell and matched with the first positioning structure in a limiting mode. The clamping groove is formed in the circuit breaker shell; the buckle is arranged on the accessory shell and is clamped and matched with the clamping groove; the first mounting hole is formed in the circuit breaker shell; the first mounting hole is formed in the circuit breaker shell, the second mounting hole is formed in the accessory shell, the fastener penetrates through the first mounting hole and is in threaded connection with the second mounting hole, and the circuit breaker shell and the accessory shell are fixedly mounted together through the fastener. According to the circuit breaker with the earth leakage protection accessory provided by the utility model, during installation, the circuit breaker is provided with the alignment mechanism for alignment, is provided with the buckle mechanism for preliminary fixation, and is finally fixed through screws, so that the installation is convenient, rapid and stable. According to the circuit breaker with the earth leakage protection accessory provided by the utility model, during installation, the circuit breaker is provided with the alignment mechanism for alignment, is provided with the buckle mechanism for preliminary fixation, and is finally fixed through screws, so that the installation is convenient, rapid and stable.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, in particular to a circuit breaker with a leakage protection accessory. Background Art

[0002] The leakage protection circuit breaker has overload, short circuit and leakage protection functions, that is, it has the functions of a circuit breaker and a leakage protector. Therefore, the leakage protection circuit breaker is a commonly used protection device in electrical circuits, and is widely used in mobile electrical equipment and handheld power tools; electrical equipment installed in humid, highly corrosive and other harsh places; electrical construction machinery and equipment at construction sites; socket circuits in buildings such as schools, enterprises, and residences; underwater lighting equipment in swimming pools, fountains, and baths; power supply lines and equipment installed in water; electrical medical equipment in hospitals that directly contact the human body, etc.

[0003] The residual current circuit breaker can be installed as an accessory with the circuit breaker housing. The conventional installation method is to install it by screws, but the installation is inconvenient due to the lack of alignment. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides a leakage protection switch with a terminal isolation protection structure, which mainly solves the problem that the conventional leakage circuit breaker accessory installation method is to install it by screws, which is inconvenient to install due to lack of alignment.

[0005] The technical solution of the utility model is:

[0006] A circuit breaker with a leakage protection accessory, comprising a circuit breaker housing and an accessory housing, wherein a contact mechanism and an operating structure are arranged in the circuit breaker housing, and a leakage protection mechanism is arranged in the accessory housing, wherein the leakage protection mechanism comprises a circuit board and a mutual inductor; and

[0007] A first positioning structure is provided on the circuit breaker housing,

[0008] A second positioning structure, provided on the accessory housing and limitedly matched with the first positioning structure;

[0009] A card slot, provided on the circuit breaker housing;

[0010] A buckle, provided on the accessory housing and engaged with the card slot;

[0011] A first mounting hole is provided on the circuit breaker housing;

[0012] The second mounting hole is provided on the accessory housing and further comprises a fastener, wherein the fastener passes through the first mounting hole and is threadedly connected with the second mounting hole to fix the circuit breaker housing and the accessory housing together.

[0013] The first positioning structure is a recessed groove provided on the side wall of the circuit breaker, and the second positioning structure is an inserting plate provided on the accessory housing, and the inserting plate is consistent with the shape of the recessed groove.

[0014] The sinking groove and the clamping groove are arranged opposite to each other up and down.

[0015] The circuit breaker housing is provided with a wiring frame, the accessory housing is provided with a wire entry hole, the wire entry hole is arranged opposite to the wiring frame, and the wire entry hole is a square hole.

[0016] A guide tube is provided on the inner wall of the accessory housing, and a wire groove communicated with the wire inlet hole is provided on the inner wall of the guide tube.

[0017] The mutual inductor is sleeved outside the guide tube.

[0018] The inner wall of the accessory housing is provided with a mounting column, the circuit breaker housing is provided with a positioning hole, and part of the mounting column is arranged in the positioning hole and is in clearance fit with the positioning hole.

[0019] The first mounting hole is coaxially arranged with the positioning hole and is in communication with each other, and a portion of the first mounting hole is arranged in the mounting column.

[0020] The beneficial effects of the utility model are as follows: the utility model provides a circuit breaker with leakage protection accessories, which is aligned by an alignment mechanism during installation, initially fixed by a snap mechanism, and finally fixed by screws, so that the installation is convenient, fast and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model.

[0022] Figure 2 The figure is an exploded schematic diagram of an embodiment of the utility model.

[0023] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0024] Figure 4 It is a partial cross-sectional schematic diagram of an embodiment of the utility model.

[0025] Figure 5 It is a partial three-dimensional schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings: as shown in the figure, a circuit breaker with a leakage protection accessory comprises a circuit breaker housing 1 and an accessory housing 2, wherein a contact mechanism and an operating structure are arranged in the circuit breaker housing, and a leakage protection mechanism is arranged in the accessory housing, wherein the leakage protection mechanism comprises a circuit board 21 and a mutual inductor 22; further comprising a first positioning structure 11, which is arranged on the circuit breaker housing, a second positioning structure 23, which is arranged on the accessory housing and is limitedly matched with the first positioning structure; a slot 12, which is arranged on the circuit breaker housing; a buckle 24, which is arranged on the accessory housing and is engaged with the slot; a first mounting hole 13, which is arranged on the circuit breaker housing; a second mounting hole 25, which is arranged on the accessory housing, and further comprising a fastener 4, which passes through the first mounting hole and is threadedly connected with the second mounting hole and fixes the circuit breaker housing and the accessory housing together. The contact mechanism can be a moving contact and a stationary contact, and the operating mechanism includes a lock, a bracket, a jumper, and a handle, etc., which are prior arts and will not be described in detail. Further, both sides of the accessory housing and both sides of the circuit breaker housing have positioning structures. When the positioning structures are aligned, the first mounting hole and the second mounting hole are also aligned, and the buckle will also cooperate with the buckle to form a preliminary fixation, and then the screws can be installed to achieve installation. The transformer is electrically connected to the circuit board.

[0027] In this embodiment, as shown in the figure, the first positioning structure is a sink groove provided on the side wall of the circuit breaker, and the second positioning structure is a plug plate provided on the accessory housing, and the plug plate matches the shape of the sink groove. Both can be rectangular parallelepiped, and being provided on the side wall of the circuit breaker can be more intuitively aligned.

[0028] In this embodiment, as shown in the figure, the sink groove and the clamping groove are arranged opposite to each other in the upper and lower directions.

[0029] In this embodiment, as shown in the figure, the circuit breaker housing is provided with a wiring frame 14, and the accessory housing is provided with a wire entry hole 26, which is arranged opposite to the wiring frame and is a square hole. Since the wiring frame is square, the wire entry hole is also changed to a square shape, which is more conducive to the entry of wires.

[0030] In this embodiment, as shown in the figure, the inner wall of the accessory housing is provided with a guide tube 261, and the inner wall of the guide tube is provided with a wire groove connected with the wire entry hole, which is more conducive to the wire and prevents it from going astray.

[0031] In this embodiment, as shown in the figure, the mutual inductor is sleeved outside the guide tube, which makes installation more convenient.

[0032] In this embodiment, as shown in the figure, the inner wall of the accessory housing is provided with a mounting post 27, the circuit breaker housing is provided with a positioning hole 15, and part of the mounting post is arranged in the positioning hole and has a clearance fit with the positioning hole, which can play a further positioning role.

[0033] In this embodiment, as shown in the figure, the first mounting hole is coaxially arranged and connected with the positioning hole, and a portion of the first mounting hole is arranged in the mounting column.

[0034] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A circuit breaker with a leakage protection accessory, comprising a circuit breaker housing (1) and an accessory housing (2), wherein a contact mechanism and an operating structure are arranged in the circuit breaker housing, and a leakage protection mechanism is arranged in the accessory housing, wherein the leakage protection mechanism comprises a circuit board (21) and a mutual inductor (22); characterized in that: Also includes A first positioning structure (11) is provided on the circuit breaker housing. A second positioning structure (23), provided on the accessory housing and limitedly cooperating with the first positioning structure; A card slot (12) is provided on the circuit breaker housing; A buckle (24) is provided on the accessory housing and is engaged with the card slot; A first mounting hole (13) is provided on the circuit breaker housing; A second mounting hole (25) is provided on the accessory housing and further comprises a fastener (4), the fastener passing through the first mounting hole and being threadedly connected to the second mounting hole to fix the circuit breaker housing and the accessory housing together.

2. A circuit breaker with a leakage protection accessory according to claim 1, characterized in that: The first positioning structure is a recessed groove provided on the side wall of the circuit breaker, and the second positioning structure is an inserting plate provided on the accessory housing, and the inserting plate is consistent with the shape of the recessed groove.

3. A circuit breaker with a leakage protection accessory according to claim 2, characterized in that: The sinking groove and the clamping groove are arranged opposite to each other up and down.

4. A circuit breaker with a leakage protection accessory according to claim 1, characterized in that: The circuit breaker housing is provided with a wiring frame (14), and the accessory housing is provided with a wire entry hole (26), the wire entry hole being arranged opposite to the wiring frame and being a square hole.

5. A circuit breaker with a leakage protection accessory according to claim 4, characterized in that: A guide tube (261) is provided on the inner wall of the accessory housing, and a wire groove communicating with the wire entry hole is provided on the inner wall of the guide tube.

6. A circuit breaker with a leakage protection accessory according to claim 5, characterized in that: The mutual inductor is sleeved outside the guide tube.

7. A circuit breaker with a leakage protection accessory according to claim 1, characterized in that: The inner wall of the accessory housing is provided with a mounting column (27), the circuit breaker housing is provided with a positioning hole (15), and part of the mounting column is arranged in the positioning hole and is in clearance fit with the positioning hole.

8. A circuit breaker with leakage protection accessory according to claim 7, characterized in that: The first mounting hole is coaxially arranged with the positioning hole and is in communication with each other, and a portion of the first mounting hole is arranged in the mounting column.

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