A circuit breaker

Abstract

A circuit breaker. It mainly solves the problem that most of the latches of the current circuit breakers are connected to the bracket by only one hinge shaft, so the movement is relatively unstable. There are also those connected by two hinge shafts, but the installation is rather troublesome for the circuit breaker. Its characteristics are as follows: An operating mechanism (3) is provided inside the circuit breaker housing. The operating mechanism includes a bracket (31) hinged inside the circuit breaker housing. A latch (32) and a trip latch (33) are correspondingly provided on the bracket. A first hinge shaft (311) and a second hinge shaft (312) are respectively provided on both sides of the bracket. The latch includes a main body (321) and a side plate (322) which are detachably connected. A first hinge hole (3211) hinged and matched with the first hinge shaft is provided on the main body. A second hinge hole (3221) hinged and matched with the second hinge shaft is provided on the side plate. The present invention provides a circuit breaker with stable latch operation and convenient installation.

Description

Technical Field

[0001] The present invention relates to the field of circuit breakers, and particularly to a circuit breaker. Background Art

[0002] According to the requirements of the intelligent power supply network, it is required that the power supply network be intelligent. Therefore, the terminal actuator of the power supply network, the miniature circuit breaker, needs to perform the functions of tripping and closing for the upper-end signal. Therefore, the current development trend of the miniature circuit breaker is that in addition to having the traditional manual switching and over-current and overload automatic tripping functions, it also needs to have the functions of automatic switching and reclosing to achieve remote control.

[0003] Most of the latches of the current circuit breakers are hinged to the bracket by only one hinge axis, so the movement is relatively unstable. There are also those connected by two hinge axes, but the installation is relatively troublesome. Summary of the Invention

[0004] In order to overcome the deficiencies of the background art, the present invention provides a circuit breaker, which mainly solves the problem that most of the latches of the current circuit breakers are connected to the bracket by only one hinge axis, so the movement is relatively unstable. There are also those connected by two hinge axes, but the installation is relatively troublesome.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A circuit breaker includes a circuit breaker housing, and an operating mechanism is provided inside the circuit breaker housing. The operating mechanism includes a bracket hinged inside the circuit breaker housing. A latch and a trip are correspondingly provided on the bracket. A first hinge axis and a second hinge axis are respectively provided on both sides of the bracket. The latch includes a main body and a side plate that are detachably connected. A first hinge hole for hinged cooperation with the first hinge axis is provided on the main body, and a second hinge hole for hinged cooperation with the second hinge axis is provided on the side plate.

[0007] The main body and the side plate are snap-connected or connected by screws.

[0008] A boss is provided on the side plate, and a snap groove for snap-connection with the boss is provided on the main body.

[0009] It also includes a wiring frame and a fastening screw connected by threads. The wiring frame includes an empty groove. The fastening screw partially extends into the empty groove. A wire pressing plate is correspondingly provided at the bottom of the fastening screw. A wire pressing groove is formed between the wire pressing plate and the inner wall of the empty groove. Anti-slip protrusions and at least two convex blocks for clamping the outer walls of both sides of the wire are provided on one side of the wire pressing plate relative to the wire pressing groove. The convex blocks are provided on both sides of the anti-slip protrusions.

[0010] The anti-slip protrusions, the convex blocks and the wire pressing plate are integrally formed.

[0011] A through groove is provided at the bottom of the wiring frame opposite to the anti-slip protrusion.

[0012] It further includes a main control housing. An accessory housing is detachably connected to the circuit breaker housing. A main circuit board is provided in the main control housing. It also includes an intermediate cover. One end of the intermediate cover is detachably connected to the accessory housing, and the other end is detachably connected to the circuit breaker housing. A secondary circuit board electrically connected to the main circuit board is provided in the circuit breaker housing. The intermediate cover, the side wall of the accessory housing, and the outer wall of the circuit breaker housing form a receiving groove for placing the secondary circuit board.

[0013] A hanging groove is provided on the accessory housing, and a hook engaged with the hanging groove is provided on the intermediate cover.

[0014] A groove is provided on the circuit breaker housing, and a convex block engaged or inserted with the groove is provided on the intermediate cover.

[0015] An elastic support plate is provided on the accessory housing, and the hook is provided at the bottom of the support plate.

[0016] The beneficial effects of the present invention are: The present invention provides a circuit breaker with stable lock operation and convenient installation. Description of the Drawings

[0017] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0018] Figure 2 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0019] Figure 3 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0020] Figure 4 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0021] Figure 5 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0022] Figure 6 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0023] Figure 7 It is a three-dimensional schematic diagram of the intermediate cover of an embodiment of the present invention.

[0024] Figure 8 It is a partial three-dimensional schematic diagram of an embodiment of the present invention. Detailed Embodiments

[0025] The present invention will be further described below in conjunction with the accompanying drawings: As shown in the figure, a circuit breaker includes a circuit breaker housing 1, and an operating mechanism 3 is provided inside the circuit breaker housing. The operating mechanism includes a bracket 31 hinged inside the circuit breaker housing. A latch 32 and a trip latch 33 are correspondingly provided on the bracket. A first hinge shaft 311 and a second hinge shaft 312 are respectively provided on both sides of the bracket. The latch includes a main body 321 and a side plate 322 that are detachably connected. A first hinge hole 3211 that is hinged and matched with the first hinge shaft is provided on the main body, and a second hinge hole 3221 that is hinged and matched with the second hinge shaft is provided on the side plate. During installation, the main body and the side plate can be respectively sleeved on their respective hinge shafts, and then the main body and the side plate are connected. As an alternative solution, they can be connected by means such as screw connection or snap connection.

[0026] In this embodiment, as shown in the figure, the main body and the side plate are snap-connected or connected by screws.

[0027] In this embodiment, as shown in the figure, a boss 3222 is provided on the side plate, and a snap groove 3212 that is snap-connected with the boss is provided on the main body. Through snap connection, the installation is convenient and the use effect is better.

[0028] In this embodiment, as shown in the figure, it further includes a connection frame 41 and a fastening screw 42 that are threadedly connected. The connection frame includes an empty groove 411, and a part of the fastening screw extends into the empty groove. A pressing plate 43 is correspondingly provided at the bottom of the fastening screw. A wire pressing groove 412 is formed between the pressing plate and the inner wall of the empty groove. Anti-slip protrusions and at least two protrusions for clamping the outer walls of both sides of the wire are provided on one side of the pressing plate relative to the wire pressing groove. The protrusions are provided on both sides of the anti-slip protrusion. The pressing plate is provided with anti-slip protrusions and protrusions for clamping the wire, and the wire pressing is stable and not easy to shake.

[0029] In this embodiment, as shown in the figure, the anti-slip protrusions, the protrusions and the pressing plate are integrally formed. The production is convenient.

[0030] In this embodiment, as shown in the figure, a through groove 44 is provided at the bottom of the connection frame opposite to the anti-slip protrusion. After the wire is squeezed by the protrusions, the bottom of the wire will be pressed into the through groove, and the installation is more stable.

[0031] In this embodiment, as shown in the figure, it further includes a main control housing 2. An accessory housing 6 is detachably connected to the circuit breaker housing. A main circuit board is provided inside the main control housing. It further includes an intermediate cover 5. One end of the intermediate cover is detachably connected to the accessory housing, and the other end is detachably connected to the circuit breaker housing. A secondary circuit board 52 electrically connected to the main circuit board is provided inside the circuit breaker housing. The intermediate cover, the side wall of the accessory housing, and the outer wall of the circuit breaker housing form a receiving groove 54 for placing the secondary circuit board. By providing a detachable intermediate cover between the circuit breaker housing and the accessory housing, the secondary circuit board can be operated by removing the intermediate cover, with a simple structure and convenient use.

[0032] In this embodiment, as shown in the figure, a hanging groove 61 is provided on the accessory housing, and a hook 51 engaged with the hanging groove is provided on the intermediate cover.

[0033] In this embodiment, as shown in the figure, a groove 15 is provided on the circuit breaker housing, and a second convex block engaged or snap-fitted with the groove is provided on the intermediate cover.

[0034] In this embodiment, as shown in the figure, an elastic support plate 53 is provided on the accessory housing, and the hook is provided at the bottom of the support plate. During installation, the second convex block is first inserted into the groove, and then the hook at the other end is snapped into the hanging groove. Since the support plate can be deformed, the installation is relatively convenient.

[0035] In the description of the present invention, 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 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 should not be construed as a limitation of the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number 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 invention, "a plurality" means two or more unless otherwise specifically defined.

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

Claims

1. A circuit breaker, comprising a circuit breaker housing (1), characterized in that: An operating mechanism (3) is provided inside the circuit breaker housing. The operating mechanism includes a bracket (31) hinged inside the circuit breaker housing. A latch (32) and a tripping latch (33) are correspondingly provided on the bracket. A first hinge shaft (311) and a second hinge shaft (312) are respectively provided on both sides of the bracket. The latch includes a main body (321) and a side plate (322) that are detachably connected. A first hinge hole (3211) for hinged cooperation with the first hinge shaft is provided on the main body. A second hinge hole (3221) for hinged cooperation with the second hinge shaft is provided on the side plate. The main body and the side plate are arranged on both sides of the bracket. A boss (3222) is provided on the side plate. A clamping groove (3212) for clamping cooperation with the boss is provided on the main body.

2. The circuit breaker according to claim 1, characterized in that: It further includes a wiring frame (41) and a fastening screw (42) that are threadedly connected. The wiring frame includes an empty groove (411). The fastening screw partially extends into the empty groove. A wire pressing plate (43) is correspondingly provided at the bottom of the fastening screw. A wire pressing groove (412) is formed between the wire pressing plate and the inner wall of the empty groove. Anti-slip protrusions and at least two protrusions for clamping the outer walls of both sides of the wire are provided on one side of the wire pressing plate relative to the wire pressing groove. The protrusions are arranged on both sides of the anti-slip protrusions.

3. A circuit breaker according to claim 2, characterized in that: The anti-slip protrusions, protrusions and the wire pressing plate are integrally formed.

4. A circuit breaker according to claim 3, characterized in that: A through groove (44) is provided at the bottom of the wiring frame relative to the anti-slip protrusions.

5. A circuit breaker according to claim 1, characterized in that: It further includes a main control housing (2). An accessory housing (6) is detachably connected to the circuit breaker housing. A main circuit board is provided inside the main control housing. It further includes an intermediate cover (5). One end of the intermediate cover is detachably connected to the accessory housing, and the other end is detachably connected to the circuit breaker housing. A secondary circuit board (52) electrically connected to the main circuit board is provided inside the circuit breaker housing. An accommodation groove (54) for placing the secondary circuit board is formed between the intermediate cover, the side wall of the accessory housing and the outer wall of the circuit breaker housing.

6. A circuit breaker according to claim 5, characterized in that: A hanging groove (61) is provided on the accessory housing. A hook (51) for clamping cooperation with the hanging groove is provided on the intermediate cover.

7. A circuit breaker according to claim 6, characterized in that: A groove (15) is provided on the circuit breaker housing. A second protrusion for plugging cooperation or clamping cooperation with the groove is provided on the intermediate cover.

8. A circuit breaker according to claim 7, characterized in that: An elastic support plate (53) is provided on the accessory housing. The hook is provided at the bottom of the support plate.

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