Circuit breaker with multidirectional exhaust function

Abstract

The utility model discloses a circuit breaker with a multidirectional exhaust function. The miniature circuit breaker mainly solves the problems that most of conventional miniature circuit breakers are exhausted only through exhaust holes in the side wall, and the exhaust amount is small. The circuit breaker is characterized in that the circuit breaker also comprises a separator plate (14) which is arranged between the release and the arc extinguish chamber, the separator plate is provided with a ventilation groove (141), and a second exhaust channel (130) is formed among the arc extinguish chamber, the ventilation groove and the operation groove. The utility model provides a circuit breaker with a multidirectional exhaust function, which can realize multi-path exhaust and is higher in efficiency.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, specifically to a circuit breaker with multi-directional exhaust 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, most miniature circuit breakers only vent through vent holes on the side wall, resulting in a small venting volume. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a circuit breaker with multi-directional venting function, which mainly solves the problem that the venting of conventional small circuit breakers is mostly done through the venting holes on the side wall, resulting in a small venting volume.

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

[0006] A circuit breaker with multi-directional venting function includes a housing, an arc-extinguishing chamber and a trip unit inside the housing, a first vent hole provided on the bottom and / or side wall of the housing, a first venting channel formed between the arc-extinguishing chamber and the first vent hole, and an operating groove for inserting a screwdriver on the housing.

[0007] A partition is provided between the trip unit and the arc-extinguishing chamber. The partition is provided with a venting groove, and a second exhaust channel is formed between the arc-extinguishing chamber, the venting groove and the operating groove.

[0008] The operating slot is provided with a wiring frame, and the housing is provided with a second partition, which is located between the wiring frame and the trip unit.

[0009] The second partition is provided with a connecting groove, and the wiring frame is provided with a wiring piece, which passes through the connecting groove for electrical connection with the trip unit.

[0010] The housing is also provided with a baffle wall, and the operating groove is formed between the baffle wall and the inner wall of the housing.

[0011] A portion of the second exhaust channel is formed between the baffle and the second partition.

[0012] The housing is provided with a rotatable bracket, and a moving contact is provided on the bracket. An arc-starting channel is provided between the moving contact and the arc-extinguishing chamber. The housing is provided with a third partition, which is located between the arc-starting channel and the bracket.

[0013] The third partition is provided with a long groove for the movement of the moving contact, and the bracket is provided with a baffle, which is correspondingly located above the long groove.

[0014] The baffle is an arc-shaped plate.

[0015] The side wall of the housing is provided with a third exhaust hole that communicates with the second exhaust channel.

[0016] The beneficial effects of this utility model are: This utility model provides a circuit breaker with multi-directional exhaust function, which can realize multiple exhaust channels and has higher efficiency. Attached Figure Description

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

[0018] Figure 2 For this Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 3 This is a partial perspective view of one embodiment of the present invention.

[0020] Figure 4 For this Figure 1 Enlarged diagram of point B in the middle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. A circuit breaker with multi-directional venting function includes a housing 1, an arc-extinguishing chamber 2 and a trip unit 3 inside the housing, a first vent 11 provided on the bottom and / or side wall of the housing, a first venting channel 12 formed between the arc-extinguishing chamber and the first vent, an operating groove 13 for inserting a screwdriver on the housing, and a partition 14 disposed between the trip unit and the arc-extinguishing chamber. A venting groove 141 is provided on the partition, and a second venting channel 130 is formed between the arc-extinguishing chamber, the venting groove, and the operating groove. The gas discharged from the arc-extinguishing chamber can be discharged through either the first channel or the second venting channel, resulting in multi-channel discharge and higher venting efficiency.

[0022] In this embodiment, as shown in the figure, a wiring frame 41 is provided in the operating slot, and a second partition 15 is provided in the housing. The second partition is located between the wiring frame and the trip unit.

[0023] In this embodiment, as shown in the figure, the second partition is provided with a connecting groove 151, and the wiring frame is provided with a wiring piece 42. The wiring piece passes through the connecting groove for electrical connection with the trip unit.

[0024] In this embodiment, as shown in the figure, a baffle 156 is also provided inside the housing, and the operating groove is formed between the baffle and the inner wall of the housing.

[0025] In this embodiment, as shown in the figure, a portion of the second exhaust channel is formed between the baffle and the second partition. This serves as an exhaust guide, resulting in a more stable overall airflow direction.

[0026] In this embodiment, as shown in the figure, a rotatable bracket 51 is provided inside the housing, a moving contact 52 is provided on the bracket, and an arc-starting channel 53 is provided between the moving contact and the arc-extinguishing chamber. A third partition 16 is provided inside the housing, and the third partition is located between the arc-starting channel and the bracket. This greatly reduces airflow backflow.

[0027] In this embodiment, as shown in the figure, the third partition is provided with a long slot 161 for the movement of the moving contact, and the bracket is provided with a baffle 511, which is correspondingly disposed above the long slot. This facilitates the movement of the moving contact without causing interference, and at the same time, the baffle can also provide a certain blocking function to prevent backlash.

[0028] In this embodiment, as shown in the figure, the baffle is an arc-shaped plate.

[0029] In this embodiment, as shown in the figure, the side wall of the housing is provided with a third exhaust hole 18 that communicates with the second exhaust channel, which facilitates air exhaust.

[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 multi-directional exhaust function, comprising a shell (1), an arc extinguishing chamber (2) and a tripping device (3) in the shell, a first exhaust hole (11) is arranged at the bottom and / or side wall of the shell, a first exhaust channel (12) is formed between the arc extinguishing chamber and the first exhaust hole, an operation slot (13) for screwdriver insertion is arranged on the shell, characterized in that: Also comprising A partition (14) is arranged between the tripping device and the arc extinguishing chamber, and a gas passage (141) is arranged on the partition, and a second exhaust passage (130) is formed between the arc extinguishing chamber, the gas passage and the operation slot.

2. The circuit breaker with multi-direction exhaust function according to claim 1, characterized in that: A terminal block (41) is arranged in the operation slot, and a second partition (15) is arranged in the shell, and the second partition is arranged between the terminal block and the tripping device.

3. The circuit breaker with multi-direction exhaust function according to claim 2, characterized in that: A connecting slot (151) is arranged on the second partition, and a terminal piece (42) is arranged on the terminal block, and the terminal piece passes through the connecting slot and is electrically connected with the tripping device.

4. The circuit breaker with multi-direction exhaust function according to claim 3, characterized in that: A baffle (156) is further arranged in the shell, and the operation slot is formed between the baffle and the inner wall of the shell.

5. The circuit breaker with multi-direction exhaust function according to claim 4, characterized in that: Part of the second exhaust passage is formed between the baffle and the second partition.

6. The circuit breaker with multi-direction exhaust function according to claim 5, characterized in that: A rotatable support (51) is arranged in the shell, and a movable contact (52) is arranged on the support, and an arc leading passage (53) is arranged between the movable contact and the arc extinguishing chamber.

7. The circuit breaker with multi-direction exhaust function according to claim 6, characterized in that: A third partition (16) is arranged in the shell, and the third partition is arranged between the arc leading passage and the support.

8. The circuit breaker with multi-direction exhaust function according to claim 7, characterized in that: A long slot (161) for the movable contact is arranged on the third partition, and a baffle (511) is arranged on the support, and the baffle is arranged above the long slot.

9. The circuit breaker with multi-direction exhaust function according to claim 8, characterized in that: The baffle is an arc-shaped plate. A third exhaust hole (18) is arranged on the side wall of the shell and communicates with the second exhaust passage.

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