AU2015101220A4

AU2015101220A4 - Circuit breaker against electrical leakage

Info

Publication number: AU2015101220A4
Application number: AU2015101220A
Authority: AU
Inventors: Senlin Zhang
Original assignee: Wenzhou Ark Electric Technology Corp
Current assignee: Wenzhou Ark Electric Technology Corp
Priority date: 2014-12-19
Filing date: 2015-09-03
Publication date: 2015-10-08
Anticipated expiration: 2023-09-03
Also published as: CN204242983U

Abstract

A circuit breaker against electrical leakage comprises a casing, a circuit board, an electromagnetic system, a wire enter assembly, a wire exit assembly, an arc extinguishing chamber, a handle, and a link assembly. The casing includes a main body and a control room above the main body. The main body and the control room are interconnected to constitute a reverse T-shaped installation cavity. The arc extinguishing chamber and the electromagnetic system are disposed in the main body sequentially in the direction of the control room, corresponding to the junction of the main body and the control room. The handle and the link assembly are disposed in the control room sequentially in the direction of the length of the main body. The circuit board is installed in the control room.

Description

CIRCUIT BREAKER AGAINST ELECTRICAL LEAKAGE BACKGROUND OF THE INVENTION 5 1. Field of the Invention The present invention relates to a circuit breaker, and more particularly to a circuit breaker against electrical leakage. 2. Description of the Prior Art A circuit breaker is a switch able to open/close, load and break a path of an 10 electrical current. Wherein, a circuit breaker against electrical leakage is a circuit breaker able to break the path automatically when the electrical current exceeds the predetermined value. In general, a circuit breaker against electrical leakage is provided with a circuit board for controlling the parts of the circuit breaker. The casing of the circuit breaker 15 against electrical leakage includes a main body and a control room above the main body. The main body and the control room are interconnected to constitute a reverse T-shaped installation cavity. The traditional circuit board is large in size, and the contour of the main body has a certain height and width to meet the standard limitations. Thus, the circuit board is installed under the main body, namely, under the 20 arc extinguishing room. This results in that the volume of the arc extinguishing room is reduced to lower the arc extinguishing effect. The existing technique is able to reduce the volume of the circuit board greatly. It is not necessary to install the circuit board under the main body. Accordingly, the inventor of the present invention has devoted himself based on 25 his many years of practical experiences to solve these problems.

SUMMARY OF THE INVENTION The primary object of the present invention is to overcome the shortcomings of the prior art and provide a circuit breaker against electrical leakage having a better arc 5 extinguishing effect. In order to achieve the object, the circuit breaker against electrical leakage of the present invention comprises a casing, a circuit board, an electromagnetic system, a wire enter assembly, a wire exit assembly, an arc extinguishing chamber, a handle, and a link assembly. The casing includes a main body and a control room above the 10 main body. The main body and the control room are interconnected to constitute a reverse T-shaped installation cavity. The arc extinguishing chamber and the electromagnetic system are disposed in the main body sequentially in the direction of the control room, corresponding to the junction of the main body and the control room. The handle and the link assembly are disposed in the control room sequentially in the 15 direction of the length of the main body. The circuit board is installed in the control room. In cooperation with the existing technique to reduce the size of the circuit board, the circuit board is moved to the control room, such that the space under the main body for installing the circuit board is shared to the arc extinguishing chamber so as to 20 increase the volume of the arc extinguishing chamber to enhance the arc extinguishing effect. Preferably, the circuit board is installed between the electromagnetic system and the handle. The circuit board is disposed between the electromagnetic system and the 25 handle, enabling the size of the length of the control room to be more compact so as to optimize the structure. Preferably, between the handle and a wall of the control room and at another side of the handle relative to the link assembly is provided with a component accommodation cavity for accommodating large-sized components placed on the 30 circuit board. The large-sized components on the circuit board are gathered in the component accommodation cavity to make use of the existing space, and are located at the other side of the handle relative to the link assembly in order to prevent the link assembly from disengagement because of vibration or because the circuit board is not fixed steady. Preferably, a fixing board is provided in the control room in the direction of the 5 width of the main body and fixed to the wall of the control room. The fixing board and the wall of the control room constitute a fixing surface corresponding in shape to an adjacent side of the circuit board. The fixing surface constituted by the fixing board and the wall of the control room is adapted to fix the adjacent side of the circuit board, such that the circuit board is 10 installed more steadily. In another embodiment of the present invention, the circuit board is installed at another side of the handle relative to the link assembly. The size of the length of the control room is lengthened to increase the space for installing the circuit board, such that the reduced circuit board can be moved to the 15 control room. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view according to a first embodiment of the present 20 invention; FIG. 2 is a perspective view according to the first embodiment of the present invention, without the circuit board; and FIG. 3 is a perspective view according to a second embodiment of the present invention. 25 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the present invention discloses a circuit breaker against electrical leakage. The circuit breaker comprises a casing 1, a circuit board 2, an electromagnetic system 3, a wire enter assembly, a wire exit assembly, an arc extinguishing chamber, a handle, and a link assembly. The casing includes a main 5 body 11 and a control room 12 above the main body 11. Wherein, the link assembly is mounted to a link assembly cavity 121. The handle is mounted to the handle cavity 122. The main body 11 and the control room 12 are interconnected to constitute a reverse T-shaped installation cavity 13. The arc extinguishing chamber and the electromagnetic system 3 are disposed in the main body 11 sequentially in the 10 direction of the control room 12, corresponding to the junction of the main body 11 and the control room 12. The handle and the link assembly are disposed in the control room 12 sequentially in the direction of the length of the main body. The circuit board 2 is installed in the control room 12. In cooperation with the existing technique to reduce the size of the circuit board, the circuit board 2 is moved to the control room 12, such 15 that the space under the main body 11 for installing the circuit board 2 is shared to the arc extinguishing chamber so as to increase the volume of the arc extinguishing chamber to enhance the arc extinguishing effect. The circuit board 2 is installed between the electromagnetic system and the handle. The reduced circuit board 2 is moved to the control room 12, enabling the size 20 of the length of the control room 12 to be more compact so as to optimize the structure. Between the handle and the wall of the control room 12 and at another side of the handle relative to the link assembly is provided with a component accommodation cavity 123 for accommodating large-sized components placed on the circuit board. 25 The large-sized components on the circuit board 2 are gathered in the component accommodation cavity 123 to make use of the existing space, and are located at the other side of the handle relative to the link assembly in order to prevent the link assembly from disengagement because of vibration or because the circuit board is not fixed steady. 30 A fixing board 124 is provided in the control room 12 in the direction of the width of the main body 11 and fixed to the wall of the control room 12. The fixing board 124 and the wall of the control room 12 constitute a fixing surface 125 corresponding in shape to an adjacent side of the circuit board 2. The fixing surface 125 constituted by the fixing board 124 and the wall of the control room 12 is adapted to fix the adjacent side of the circuit board 2, such that the circuit board 2 is installed more steadily. As shown in FIG. 3, the circuit board 2' is installed at another side of the handle relative to the link assembly, namely, the circuit board 2' is located at another side of the handle cavity 122' of the control room 12' relative to the link assembly cavity 121', 5 enabling the size of the control room 12 in the direction of the height to be more compact, so that the reduced circuit board 2' is moved to the control room. The circuit board 2 is fixed in the control room 12 in any manner. Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be 10 made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.

Claims

1. A circuit breaker against electrical leakage, comprises a casing, a circuit board, 5 an electromagnetic system, a wire enter assembly, a wire exit assembly, an arc extinguishing chamber, a handle, and a link assembly, the casing including a main body and a control room above the main body, the main body and the control room being interconnected to constitute a reverse T-shaped installation cavity, the arc extinguishing chamber and the electromagnetic system being disposed in the main 10 body sequentially in the direction of the control room, corresponding to the junction of the main body and the control room, the handle and the link assembly being disposed in the control room sequentially in the direction of the length of the main body, characterized in that: the circuit board is installed in the control room.

2. The circuit breaker against electrical leakage as claimed in claim 1, wherein 15 the circuit board is installed between the electromagnetic system and the handle.

3. The circuit breaker against electrical leakage as claimed in claim 2, wherein between the handle and a wall of the control room and at another side of the handle relative to the link assembly is provided with a component accommodation cavity for accommodating large-sized components placed on the circuit board. 20

4. The circuit breaker against electrical leakage as claimed in claim 3, wherein a fixing board is provided in the control room in the direction of the width of the main body and fixed to the wall of the control room, the fixing board and the wall of the control room constitute a fixing surface corresponding in shape to an adjacent side of the circuit board. 25

5. The circuit breaker against electrical leakage as claimed in claim 1, wherein the circuit board is installed at another side of the handle relative to the link assembly.