Circuit breaker with metal particle adsorption function

Abstract

The utility model discloses a circuit breaker with a metal particle adsorption function. The circuit breaker mainly solves the problem that gas containing metal particles of a conventional circuit breaker is directly exhausted from an exhaust hole, and certain potential safety hazards exist. One end of the arc striking sheet is arranged on the front side of the arc extinguish chamber, the middle section of the arc striking sheet extends to pass through the outer side of the bottom of the arc extinguish chamber, the tail end of the arc striking sheet extends into the air outlet channel and is provided with a through groove (31), and the through groove is communicated with the air outlet hole and the exhaust hole. According to the circuit breaker with the metal particle adsorption function provided by the utility model, metal particles are discharged after being shielded and adsorbed by the arc striking sheet, so that the circuit breaker is safer to use.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, specifically to a circuit breaker with metal particle adsorption function. Background Technology

[0002] Miniature circuit breakers are characterized by their advanced structure, reliable performance, high breaking capacity, and compact and aesthetically pleasing design. They are used for overload and short-circuit protection of lighting, power distribution lines, and equipment in office buildings, residences, and similar structures. They can also be used for infrequent switching and transfer of circuits. They are mainly used in various locations including industrial, commercial, high-rise, and residential buildings.

[0003] Currently, the gas containing metal particles discharged from the arc-extinguishing chamber of miniature circuit breakers is directly discharged from the exhaust port, which poses a certain safety hazard. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a circuit breaker with metal particle adsorption function, which mainly solves the problem that conventional circuit breakers directly discharge gas containing metal particles from the exhaust port, which poses certain safety hazards.

[0005] The technical solution of this utility model is as follows:

[0006] A circuit breaker with metal particle adsorption function includes a housing, an arc-extinguishing chamber and an arc-starting plate inside the housing, an air outlet on the housing, an exhaust port on the back of the arc-extinguishing chamber, and an exhaust channel between the air outlet and the exhaust port.

[0007] One end of the arc-initiating plate is located on the front side of the arc-extinguishing chamber, the middle section extends through the bottom outer side of the arc-extinguishing chamber, and the tail end extends into the air outlet channel and is provided with a through groove. The through groove is connected to the air outlet and the exhaust port.

[0008] The housing is provided with an integrally formed baffle wall, and the baffle wall and the outer wall of the arc-extinguishing chamber form the air outlet channel.

[0009] The inner wall of the housing is provided with a positioning groove, and a locking block is provided on the arc-guiding plate located in the air outlet channel. The locking block is engaged with the positioning groove for limiting.

[0010] The housing is provided with a moving contact, and an arc-initiating zone is formed between the moving contact and the arc-extinguishing chamber. The inner wall of the arc-initiating zone is provided with several guide ridges.

[0011] It also includes an arc-initiating plate that is detachably connected to the guide protrusion, and the arc-initiating plate is provided with a plurality of arc-initiating grooves.

[0012] The guide ridge has a protrusion, and the arc-guiding plate has a locking groove that engages with the protrusion.

[0013] The protrusions are provided in multiple quantities.

[0014] The guide ridges are provided in at least two.

[0015] The arc-starting groove is provided in at least two.

[0016] The beneficial effects of this utility model are: This utility model provides a circuit breaker with metal particle adsorption function, which is discharged after adsorption by the arc-striking plate, making it safer to use. Attached Figure Description

[0017] Figure 1 This is a perspective view of one embodiment of the present invention.

[0018] Figure 2 This is a partial perspective view of one embodiment of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of an arc-drawing plate according to an embodiment of the present invention.

[0020] Figure 4 This is a three-dimensional schematic diagram of an arc-guiding plate according to an embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. A circuit breaker with metal particle adsorption function includes a housing 1, an arc-extinguishing chamber 2 and an arc-starting plate 3 inside the housing, an exhaust port 11 on the housing, an exhaust port 21 on the back of the arc-extinguishing chamber, and an exhaust channel 12 between the exhaust port and the exhaust port. The arc-starting plate also includes an arc-starting plate with one end located on the front side of the arc-extinguishing chamber, a middle section extending through the bottom outer side of the arc-extinguishing chamber, and a tail end extending into the exhaust channel with a through groove 31. The through groove communicates with both the exhaust port and the exhaust port. The tail end of the arc-starting plate, located in the exhaust channel, plays a certain role in blocking and adsorbing metal particles, greatly reducing the amount of metal particles directly splashed out of the housing with the gas, making it safer to use.

[0022] In this embodiment, as shown in the figure, an integrally formed baffle 13 is provided inside the housing, and the baffle and the outer wall of the arc-extinguishing chamber form the gas outlet channel. This facilitates the guidance of gas.

[0023] In this embodiment, as shown in the figure, the inner wall of the housing is provided with a positioning groove 14, and a locking block 32 is provided on the arc-inducing plate located in the air outlet channel. The locking block engages with the positioning groove to limit the movement of one section of the arc-inducing plate and prevent it from shaking.

[0024] In this embodiment, as shown in the figure, a moving contact is provided inside the housing, and an arc-initiating area is formed between the moving contact and the arc-extinguishing chamber. The inner wall of the arc-initiating area is provided with several guide ridges 16 for better guidance.

[0025] In this embodiment, as shown in the figure, it also includes an arc-starting plate 4 detachably connected to the guide protrusion, the arc-starting plate being provided with a plurality of arc-starting grooves 41. It is suitable for circuit breakers of different specifications and can be selectively installed.

[0026] In this embodiment, as shown in the figure, the guide ridge has a protrusion 161, and the arc-guiding plate has a locking groove 42 that engages with the protrusion. This facilitates easy assembly and disassembly.

[0027] In this embodiment, as shown in the figure, multiple protrusions are provided. This makes the installation more stable.

[0028] In this embodiment, as shown in the figure, at least two guide ridges are provided.

[0029] In this embodiment, as shown in the figure, at least two arc-initiating grooves are provided.

[0030] 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.

[0031] 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.

[0032] 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 circuit breaker with metal particle adsorption function, comprising a housing (1), an arc-extinguishing chamber (2) and an arc-starting plate (3) inside the housing, an air outlet (11) provided on the housing, an exhaust port (21) provided on the back of the arc-extinguishing chamber, and an air outlet channel (12) provided between the air outlet and the exhaust port, characterized in that: Also includes One end of the arc-initiating plate is located on the front side of the arc-extinguishing chamber, the middle section extends through the bottom outer side of the arc-extinguishing chamber, and the tail end extends into the air outlet channel and is provided with a through groove (31). The through groove is connected to the air outlet and the exhaust port.

2. A circuit breaker with metal particle adsorption function according to claim 1, characterized in that: The housing is provided with an integrally formed baffle (13), and the baffle and the outer wall of the arc-extinguishing chamber form the air outlet channel.

3. A circuit breaker with metal particle adsorption function according to claim 2, characterized in that: The inner wall of the housing is provided with a positioning groove (14), and a locking block (32) is provided on the arc-guiding plate in the air outlet channel. The locking block is in a limiting fit with the positioning groove.

4. A circuit breaker with metal particle adsorption function according to claim 3, characterized in that: The housing is provided with a moving contact, and an arc-initiating zone is formed between the moving contact and the arc-extinguishing chamber. The inner wall of the arc-initiating zone is provided with several guide ridges (16).

5. A circuit breaker with metal particle adsorption function according to claim 4, characterized in that: It also includes an arc-inducing plate (4) that is detachably connected to the guide protrusion, and the arc-inducing plate is provided with a plurality of arc-inducing grooves (41).

6. A circuit breaker with metal particle adsorption function according to claim 5, characterized in that: The guide ridge is provided with a protrusion (161), and the arc-guiding plate is provided with a snap-fit ​​groove (42) that engages with the protrusion.

7. A circuit breaker with metal particle adsorption function according to claim 6, characterized in that: The protrusions are provided in multiple quantities.

8. A circuit breaker with metal particle adsorption function according to claim 7, characterized in that: The guide ridges are provided in at least two.

9. A circuit breaker with metal particle adsorption function according to claim 8, characterized in that: The arc-starting groove is provided in at least two.

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