Residual-current circuit breaker with release easy to replace

Abstract

The utility model relates to a residual-current circuit breaker with a release easy to replace. The problem that maintenance is troublesome after a release of an existing residual-current circuit breaker loses excitation is solved. The device comprises a shell, wherein the shell comprises an upper cover and a base; the contact system is arranged in the shell and used for connecting or disconnecting a circuit in the shell; the operating mechanism is arranged in the shell and is used for driving the contact system to act; the zero sequence mutual inductor is arranged in the shell and is used for detecting leakage current; the circuit board is arranged in the shell, and the zero sequence mutual inductor is electrically connected with the circuit board; the release is arranged in the shell and is used for breaking the contact system; the tripper is detachably connected with the circuit board, and the upper cover is provided with an open hole convenient for taking and placing the tripper. The beneficial effects of the utility model are that the tripper is arranged to be detachable, and when the tripper loses efficacy, electric leakage protection which can be rapidly replaced, is convenient to operate and is convenient to rapidly recover to be normal can be realized without opening the upper cover.

Description

Technical Field

[0001] The utility model relates to a leakage circuit breaker, in particular to a leakage circuit breaker with an easily replaceable release. Background Art

[0002] The leakage protector, also known as the leakage switch or leakage circuit breaker, is mainly used to protect the equipment from leakage faults and personal electric shock with fatal danger. It has overload and short circuit protection functions, and can be used to protect the line or motor from overload and short circuit. It can also be used as an infrequent switching start of the line under normal circumstances. The existing leakage circuit breaker usually includes a contact system, a mutual inductor, a circuit board and a release. The contact system usually includes a static contact piece and a moving contact piece. The mutual inductor and the release piece are both connected to the circuit board. The mutual inductor detects the leakage signal and transmits it to the circuit board. The circuit board controls the release piece to separate the moving contact piece from the static contact piece to play the role of leakage protection. The existing release is usually an integral module, which is easy to assemble. It is usually installed horizontally, and the release is fixed to the circuit board by welding. In actual use, once the release is unqualified and loses magnetism, it means that a household (or electrical equipment) cannot close the circuit normally. In other words, the release is an electromagnetic structure, and after losing magnetism, it is equivalent to a product slip buckle, causing strong dissatisfaction among domestic and foreign users. The existing release is troublesome to replace, and usually the upper cover needs to be removed and the release at the circuit board needs to be re-welded, which makes it troublesome to replace the existing release after it loses magnetism. There are certain safety hazards in the maintenance after disassembling the upper cover, and professional personnel are usually required for maintenance. Therefore, the existing practice is usually to replace the overall circuit breaker, which increases the user cost. Utility Model Content

[0003] In order to solve the problem that the release of the existing leakage circuit breaker in the background technology is troublesome to repair after losing magnetism, the utility model provides a leakage circuit breaker with an easily replaceable release.

[0004] The technical solution of the utility model is: a leakage circuit breaker with an easily replaceable release, comprising a housing, wherein the housing comprises an upper cover and a base, and further comprises:

[0005] A contact system, arranged in the housing, for connecting or disconnecting the circuit in the housing;

[0006] An operating mechanism, arranged in the housing, is used to drive the contact system to move;

[0007] A zero-sequence transformer is arranged in the housing and is used to detect leakage current;

[0008] A circuit board is arranged in the housing, and the zero-sequence mutual inductor is electrically connected to the circuit board;

[0009] The releaser is arranged in the housing and is used for disconnecting the contact system; the releaser is detachably connected to the circuit board, and the upper cover is provided with an opening for facilitating the removal and placement of the releaser.

[0010] As a further improvement of the utility model, it also includes a socket, the socket is electrically connected to the circuit board, and the release is detachably connected to the socket.

[0011] As a further improvement of the utility model, the socket is provided with a jack, the release is provided with a pin adapted to the jack, and the pin is inserted into the jack to be electrically connected to the circuit board.

[0012] As a further improvement of the utility model, a connecting groove is provided on the base, and a connecting portion that cooperates with the connecting groove is provided on the socket.

[0013] As a further improvement of the present invention, the connecting groove is arranged in an inverted "T" shape, and the connecting groove is arranged vertically.

[0014] As a further improvement of the utility model, the perforated upper cover is provided with a cover plate, and the cover plate is detachably connected to the upper cover.

[0015] As a further improvement of the utility model, the upper cover is provided with a dovetail groove, the cover plate is detachably connected to the upper cover by horizontal sliding, and the cover plate is provided with a push-pull structure for easy pulling.

[0016] As a further improvement of the present invention, a lifting block is provided on the top of the release to facilitate the insertion and removal of the release.

[0017] As a further improvement of the utility model, the lifting block is provided with a through hole.

[0018] As a further improvement of the utility model, the operating mechanism includes an operating frame, the release is arranged in close contact with the operating frame, and the outer surface of the release is sleeved on a protective cover.

[0019] The beneficial effect of the utility model is that the release is set to be detachable, and when the release fails, it can be quickly replaced without opening the upper cover, which is easy to operate and easy to quickly restore normal leakage protection. The utility model also has the advantages of simple structure, convenient assembly, reliable action, long service life, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0021] Attached Figure 2 The figure is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0022] Attached Figure 3 It is a schematic diagram of the structure of the releaser of the utility model embodiment.

[0023] Attached Figure 4 It is a schematic diagram of the structure inside the shell of an embodiment of the utility model.

[0024] Attached Figure 5 It is a schematic diagram of the explosion structure of the release device according to the embodiment of the utility model.

[0025] In the figure, 1. shell; 11. upper cover; 111. opening; 112. dovetail groove; 12. base; 121. connection groove; 2. contact system; 3. operating mechanism; 31. operating frame; 4. zero-sequence transformer; 5. circuit board; 6. release; 61. pin; 62. lifting block; 63. through hole; 64. protective cover; 7. socket; 71. jack; 72. connecting part; 8. cover plate; 81. push-pull structure. DETAILED DESCRIPTION

[0026] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0027] Depend on Figure 1 Combination Figure 2-5 As shown, a leakage circuit breaker with an easily replaceable release comprises a housing 1, wherein the housing 1 comprises an upper cover 11 and a base 12, and further comprises:

[0028] The contact system 2 is arranged in the housing 1 and is used to connect or disconnect the circuit in the housing 1;

[0029] The operating mechanism 3 is arranged in the housing 1 and is used to drive the contact system 2 to move;

[0030] A zero-sequence transformer 4 is arranged in the housing 1 and is used to detect leakage current;

[0031] The circuit board 5 is arranged in the housing 1, and the zero-sequence mutual inductor 4 is electrically connected to the circuit board 5;

[0032] The releaser 6 is arranged in the housing 1 and is used to disconnect the contact system 2; the releaser 6 is detachably connected to the circuit board 5, and the upper cover 11 is provided with an opening 111 for facilitating the removal and placement of the releaser 6. Specifically, the opening is usually arranged above the releaser, and the releaser will not interfere with other components when it is pulled out. The beneficial effect of the utility model is that the releaser is arranged to be detachable, and when the releaser fails, it can be quickly replaced without opening the upper cover, which is easy to operate and easy to quickly restore normal leakage protection. The utility model also has the advantages of simple structure, easy assembly, reliable operation, and long service life. The utility model changes the wiring method of the releaser from wire welding to a direct plug-in type from top to bottom. In an emergency, when normal power supply is unavailable, the specially provided cover can be opened and the failed release can be easily pulled out to provide emergency power supply to the home or user, especially suitable for hospitals or other emergency power supply places; secondly, it solves the problem that the existing release takes a long time for the supplier to come for repair. The utility model is very convenient to replace. Just insert a good release and push the cover into place to achieve normal power supply and normal leakage protection.

[0033] The utility model further comprises a socket 7, the socket 7 is electrically connected to the circuit board 5, and the release 6 is detachably connected to the socket 7. Specifically, the socket 7 is provided with a plug hole 71, the release 6 is provided with a pin 61 adapted to the plug hole 71, and the pin 61 is inserted into the plug hole 71 to be electrically connected to the circuit board. Such a structure can quickly realize the plug-in board through the release and the socket, which is convenient for maintenance, does not need to disassemble the entire upper cover, has high safety, and does not require professionals and professional equipment to replace the release.

[0034] The base 12 is provided with a connection groove 121, and the socket 7 is provided with a connection portion 72 that cooperates with the connection groove 121. Specifically, the connection groove 121 is arranged in an inverted "T" shape, and the connection groove 121 is arranged vertically. Such a structure makes the product structure simple, convenient to connect, and easy to disassemble and assemble.

[0035] The opening 111 is covered with a cover plate 8, and the cover plate 8 is detachably connected to the upper cover 11. The cover plate can provide good shielding and can be opened quickly when in use, so as to facilitate quick replacement of the releaser.

[0036] The upper cover 11 is provided with a dovetail groove 112, the cover plate 8 is detachably connected to the upper cover 11 by horizontal sliding, and the cover plate 8 is provided with a push-pull structure 81 for easy pulling. The utility model opens the cover plate by horizontal sliding, and of course the cover plate can also be hinged to rotate relative to the upper cover. The push-pull structure can be a block or a notch for easy hand grasping, or a convex block or groove for increasing friction, or a combination of them. The utility model sets a notch at the end of the cover plate for easy hand pulling.

[0037] The top of the release 6 is provided with a lifting block 62 for facilitating the insertion and removal of the release 6. Specifically, the lifting block 62 is provided with a through hole 63. Such a structure facilitates the pulling out of the release, and the structure is simple. Specifically, the operating mechanism 3 includes an operating frame 31, the release 6 is arranged in contact with the operating frame 31, and the outer surface of the release 6 is sleeved on a protective cover 64. Such a structure facilitates the installation of the release, and at the same time provides good protection for the release, so that the product has a long service life.

[0038] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0040] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the utility model concept is not limited to this utility model. Any modification using the utility model concept will be included in the scope of protection of the utility model patent right.

Claims

1. A residual current circuit breaker with an easily replaceable release, comprising a housing (1), wherein the housing (1) comprises an upper cover (11) and a base (12), characterized in that Also included: A contact system (2) is disposed in the housing (1) and is used to connect or disconnect the circuit in the housing (1); An operating mechanism (3) is disposed in the housing (1) and is used to drive the contact system (2) to move; A zero-sequence transformer (4) is arranged in the housing (1) and is used to detect leakage current; A circuit board (5) is arranged in the housing (1), and the zero-sequence mutual inductor (4) is electrically connected to the circuit board (5); The release device (6) is arranged in the housing (1) and is used to disconnect the contact system (2); the release device (6) is detachably connected to the circuit board (5), and the upper cover (11) is provided with an opening (111) for facilitating the removal and placement of the release device (6).

2. A residual current circuit breaker with an easily replaceable release according to claim 1, characterized in that It also comprises a socket (7), wherein the socket (7) is electrically connected to the circuit board (5), and the release (6) is detachably connected to the socket (7).

3. A leakage circuit breaker with easily replaceable release according to claim 2, characterized in that The socket (7) is provided with a socket (71), the release (6) is provided with a pin (61) adapted to the socket (71), and the pin (61) is inserted into the socket (71) to be electrically connected to the circuit board.

4. A residual current circuit breaker with easily replaceable release according to claim 2, characterized in that The base (12) is provided with a connection groove (121), and the socket (7) is provided with a connection portion (72) that cooperates with the connection groove (121).

5. A residual current circuit breaker with easily replaceable release according to claim 4, characterized in that The connection groove (121) is arranged in an inverted "T" shape, and the connection groove (121) is arranged vertically.

6. The leakage circuit breaker with easily replaceable release according to claim 1, characterized in that The opening (111) is covered with a cover plate (8), and the cover plate (8) is detachably connected to the upper cover (11).

7. A residual current circuit breaker with easily replaceable release according to claim 6, characterized in that The upper cover (11) is provided with a dovetail groove (112), the cover plate (8) is detachably connected to the upper cover (11) by horizontal sliding, and the cover plate (8) is provided with a push-pull structure (81) for easy pulling.

8. The leakage circuit breaker with easily replaceable release according to claim 6, characterized in that A lifting block (62) is provided on the top of the release (6) for facilitating the insertion and removal of the release (6).

9. A residual current circuit breaker with easily replaceable release according to claim 8, characterized in that The lifting block (62) is provided with a through hole (63).

10. The leakage circuit breaker with easily replaceable release according to claim 1, characterized in that The operating mechanism (3) comprises an operating frame (31), the release device (6) is arranged in close contact with the operating frame (31), and the outer surface of the release device (6) is sleeved on a protective cover (64).

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