CN215578409U

CN215578409U - Electric leakage circuit breaker with large current-carrying capacity

Info

Publication number: CN215578409U
Application number: CN202122133812.1U
Authority: CN
Inventors: 陈庄; 王浦; 黄加有
Original assignee: Shanghai Zucn Electronic Technology Co ltd; Zhejiang Zhuangcheng Electronic Technology Co ltd
Current assignee: Shanghai Zucn Electronic Technology Co ltd; Zhejiang Zhuangcheng Electronic Technology Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-01-18
Anticipated expiration: 2031-09-06

Abstract

The utility model relates to a residual current circuit breaker with large current-carrying capacity, which is characterized by comprising a first shell, a second shell and a wiring terminal positioned in the first shell, wherein a wiring board is arranged in the wiring terminal, a flow guide part is connected onto the wiring board, the other end of the flow guide part is connected with a thermal element, and one end of the thermal element extends towards the lower part of an arc extinguishing system. According to the utility model, the thermal element is connected with the wiring board by arranging the flow guide piece, so that the effective contact area of conduction is increased, the current-carrying capacity is improved, and the load-carrying current is promoted from 63A to 125A.

Description

Electric leakage circuit breaker with large current-carrying capacity

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a leakage circuit breaker with large current-carrying capacity.

Background

The circuit breaker has the characteristics of advanced structure, reliable performance, strong breaking capacity, attractive and small appearance and the like, is used for the overload and short-circuit protection of illumination, distribution lines and equipment of office buildings, houses and similar buildings, and can also be used for the infrequent on-off operation and conversion of the lines.

Most of the existing circuit breakers connect the thermal element and the terminal in a soft connection mode, but most of the current which can be carried by the circuit breakers is 63A, and the current-carrying capacity is small.

Disclosure of Invention

The utility model aims to provide a leakage circuit breaker with large current-carrying capacity, which improves the current-carrying capacity.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a residual current circuit breaker that current-carrying capacity is big, its characterized in that includes first casing, second casing and is located the binding post of first casing, be provided with the wiring board in the binding post, be connected with the water conservancy diversion piece on the wiring board, the other one end of water conservancy diversion piece is connected with the hot component, the one end of hot component sets up the extension to arc extinguishing system below.

The utility model further provides that the air guide element comprises a first connecting part and a second connecting part, the first connecting part is connected with the wiring board, the second connecting part is connected with the upper part of the thermal element, and the second connecting part extends towards the bottom of the shell.

The utility model further provides that the first shell is provided with a plug-in groove, the second connecting part of the corresponding flow guide piece extends towards one side of the plug-in groove to form a plug-in board, and the plug-in board is matched and installed with the plug-in groove.

The utility model is further provided with a fixing screw and a pressing spring which are respectively arranged at two sides of the bottom of the second connecting part, wherein the fixing screw is arranged in a fixing hole formed by the first shell and the second shell, and the other ends of two ends of the pressing spring are abutted against the second shell.

The utility model further provides that the first connecting part and the second connecting part are arranged at 90 degrees.

The utility model has the beneficial effects that the connection between the thermal element and the wiring board is realized by arranging the flow guide piece, the conduction area is increased, and the current-carrying capacity is improved, so that the load-bearing current is promoted from 63A to 125A.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic view of the embodiment of the utility model with the first housing removed.

Reference numeral, 10, a first housing; 20. a second housing; 30. a wiring terminal; 40. a wiring board; 50. a flow guide member; 50a, a first connection portion; 50b, a second connecting part; 60. a thermal element; 70. an arc extinguishing system; 80. inserting grooves; 90. a plugboard; 100. fixing screws; 110. a compression spring; 120. a fixing hole;

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

As shown in fig. 1 to 3, an electrical leakage breaker with large current-carrying capacity includes a first housing 10, a second housing 20, and a connection terminal 30 located in the first housing 10, a connection board 40 is disposed in the connection terminal 30, a current guiding member 50 is connected to the connection board 40, the other end of the current guiding member 50 is connected to a thermal element 60, and one end of the thermal element 60 is extended to the lower side of an arc extinguishing system 70.

The utility model further provides that the air guide 50 comprises a first connecting portion 50a and a second connecting portion 50b, the first connecting portion 50a is connected with the wiring board 40, the second connecting portion 50b is connected with the upper portion of the thermal element 60, and the second connecting portion 50b extends towards the bottom of the housing.

The utility model further provides that the first housing 10 is provided with an insertion groove 80, the second connecting portion 50b of the corresponding flow guiding element 50 extends towards one side of the insertion groove 80 to form an insertion plate 90, and the insertion plate 90 is installed in a manner of being matched with the insertion groove 80.

The present invention further provides that two sides of the bottom of the second connecting portion 50b are respectively provided with a fixing screw 100 and a pressing spring 110, the fixing screw 100 is disposed in a fixing hole 120 formed by the first housing 10 and the second housing 20, and the other ends of the two ends of the pressing spring 110 are abutted against the second housing 20.

The utility model further provides that the first connecting portion 50a and the second connecting portion 50b are arranged at 90 ° therebetween.

The utility model has the advantages that the thermal element 60 is connected with the wiring board 40 by arranging the flow guide element 50, the conduction area is increased, and the current-carrying capacity is improved, so that the load-bearing current is lifted from 63A to 125A.

Certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

More uses such as 10, first housing; 20. a second housing; 30. a wiring terminal; 40. a wiring board; 50. a flow guide member; 50a, a first connection portion; 50b, a second connecting part; 60. a thermal element; 70. an arc extinguishing system; 80. inserting grooves; 90. a plugboard; 100. fixing screws; 110. a compression spring; 120. fixation holes and the like, it is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or system comprising a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

While the foregoing description shows and describes several preferred embodiments of the utility model, it is to be understood, as noted above, that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a residual current circuit breaker that current-carrying capacity is big, its characterized in that includes first casing, second casing and is located the binding post of first casing, be provided with the wiring board in the binding post, be connected with the water conservancy diversion piece on the wiring board, the other one end of water conservancy diversion piece is connected with the hot component, the one end of hot component sets up the extension to arc extinguishing system below.

2. A large ampacity residual current circuit breaker according to claim 1, wherein the current guiding member comprises a first connecting portion and a second connecting portion, the first connecting portion is connected to the terminal block, the second connecting portion is connected to the upper portion of the thermal element, and the second connecting portion extends toward the bottom of the case.

3. An earth leakage circuit breaker with large current-carrying capacity as claimed in claim 2, wherein the first housing is provided with an insertion slot, the second connecting portion of the corresponding current guiding member extends towards one side of the insertion slot to form an insertion plate, and the insertion plate is mounted in a manner of being matched with the insertion slot.

4. A residual current circuit breaker with large current-carrying capacity according to claim 3, characterized in that two sides of the bottom of the second connecting portion are respectively provided with a fixing screw and a pressing spring, the fixing screw is arranged in a fixing hole formed by the first housing and the second housing, and the other ends of two ends of the pressing spring are abutted against the second housing.

5. A residual current circuit breaker with high current carrying capacity according to claim 4, characterized in that the first connecting portion and the second connecting portion are arranged at 90 degrees.