CN216793584U

CN216793584U - Tripping mechanism of molded case circuit breaker

Info

Publication number: CN216793584U
Application number: CN202122720747.2U
Authority: CN
Inventors: 张银春; 马云龙; 郭健
Original assignee: Shanghai Suntr Electric Co ltd
Current assignee: Shanghai Suntr Electric Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-06-21
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to the technical field of molded case circuit breakers, in particular to a tripping mechanism of a molded case circuit breaker, which comprises a circuit breaker bottom shell, an electric brake push handle is arranged in the middle of the inner part of the bottom shell of the circuit breaker, a shunt release mounting groove is arranged in the inner part of the bottom shell of the circuit breaker and positioned on the left side of the electric brake push handle, an auxiliary contact mounting groove is formed in the circuit breaker bottom shell and positioned on the right side of the electric brake push handle, the shunt release mounting groove and the auxiliary contact mounting groove are internally provided with fixed mounting components, a top pressure plate is arranged below the electric brake push handle, the shunt release and the auxiliary contact can be fixed on the inner side of the mounting seat from two sides through the arranged first spring and the fixed plate, so that the shunt release and the auxiliary contact are firmer in the fixed mounting assembly, and when the shunt release and the auxiliary contact are installed, the shunt release and the auxiliary contact cannot slide off from the groove due to the collision of external force.

Description

Tripping mechanism of molded case circuit breaker

Technical Field

The utility model relates to the technical field of molded case circuit breakers, in particular to a tripping mechanism of a molded case circuit breaker.

Background

The molded case circuit breaker is also called a device-type circuit breaker, all parts are sealed in a plastic shell, an auxiliary contact, an under-voltage release, a shunt release and the like are modularized, and the molded case circuit breaker can automatically cut off current after the current exceeds a trip setting. Plastic housing refers to the use of plastic insulators as the outer housing of the device to isolate the conductors from each other and from the grounded metal parts.

The shunt release and the auxiliary contact in the existing molded case circuit breaker are required to be assembled and connected, and the traditional installation mode is that the shunt release and the auxiliary contact are directly pressed into an installation groove and are not firm enough.

There is therefore a need for a molded case circuit breaker trip mechanism that ameliorates the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tripping mechanism of a molded case circuit breaker, which aims to solve the problems in the background technology.

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

the utility model provides a moulded case circuit breaker tripping device, includes the circuit breaker drain pan, the inside middle department of circuit breaker drain pan is provided with the electric brake and pushes away the handle, the inside of circuit breaker drain pan has been seted up the shunt release mounting groove and is located the left side that the electric brake pushed away the handle, the inside of circuit breaker drain pan has been seted up supplementary contact mounting groove and is located the right side that the electric brake pushed away the handle, the inside of shunt release mounting groove, supplementary contact mounting groove all is provided with the fixed mounting subassembly, the below that the electric brake pushed away the handle is provided with the roof pressure board.

As a preferable scheme of the utility model, the sections of the shunt release mounting groove and the auxiliary contact mounting groove are both designed into an inverted T-shaped structure.

As a preferable scheme of the present invention, the fixed mounting assembly includes a mounting seat, a first spring, a fixing plate, a second spring, a telescopic rod, and a limiting plate, the first spring is symmetrically disposed on the left and right of the inner side of the mounting seat, the fixing plate is disposed on the inner side of the first spring, the second spring is symmetrically disposed on the outer side of the mounting seat and along the length direction, the telescopic rod is disposed in the middle of the outer side of the mounting seat, and the limiting plate is disposed on the outer sides of the second spring and the telescopic rod.

As a preferable scheme of the utility model, the appearance structure of the mounting seat is designed to be a U-shaped structure.

As a preferable scheme of the utility model, the shape structure of the limit plate is designed to be an L-shaped structure.

As a preferable scheme of the utility model, the fixed mounting assembly is connected with the shunt release mounting groove and the auxiliary contact mounting groove in a sliding and detachable manner.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the overall appearance of the fixed mounting assembly is of an inverted T-shaped structure, the sections of the shunt release mounting groove and the auxiliary contact mounting groove are of inverted T-shaped structural design, when the fixed mounting assembly is mounted in the shunt release mounting groove and the auxiliary contact mounting groove, only the fixing plate needs to be pinched inwards and then placed in the shunt release mounting groove and the auxiliary contact mounting groove, and after the fixing plate is loosened, the second spring can completely clamp the fixing plate into the shunt release mounting groove and the auxiliary contact mounting groove, so that the shunt release and the auxiliary contact are convenient to mount and dismount, and the connection is firm.

2. According to the utility model, the shunt release and the auxiliary contact can be fixed on the inner side of the mounting seat from two sides through the arranged first spring and the fixed plate, so that the shunt release and the auxiliary contact are firmer in the fixed mounting assembly, and the shunt release and the auxiliary contact cannot slide off from the groove due to the collision of external force when being mounted.

Drawings

Fig. 1 is a front view of a circuit breaker bottom case of the present invention;

FIG. 2 is a schematic view of a fixed mounting assembly of the present invention;

fig. 3 is an exploded view of the fixed mounting assembly structure of the present invention.

In the figure: 1. a circuit breaker bottom case; 2. a switch push handle; 3. a shunt release mounting groove; 4. an auxiliary contact mounting groove; 5. fixing the mounting assembly; 6. a top pressing plate; 501. a mounting seat; 502. a first spring; 503. a fixing plate; 504. a second spring; 505. a telescopic rod; 506. and a limiting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

While several embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in order to facilitate an understanding of the utility model, the utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed to provide a more complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the terms herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, and the use of the term "and/or" herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the present invention provides a technical solution:

a tripping mechanism of a molded case circuit breaker comprises a circuit breaker bottom shell 1, a switch push handle 2 is arranged in the middle of the interior of the circuit breaker bottom shell 1, a shunt release mounting groove 3 is formed in the interior of the circuit breaker bottom shell 1 and is positioned on the left side of the switch push handle 2, an auxiliary contact mounting groove 4 is formed in the interior of the circuit breaker bottom shell 1 and is positioned on the right side of the switch push handle 2, fixed mounting assemblies 5 are arranged in the shunt release mounting groove 3 and the auxiliary contact mounting groove 4, a top pressure plate 6 is arranged below the switch push handle 2, the cross sections of the shunt release mounting groove 3 and the auxiliary contact mounting groove 4 are both in inverted T-shaped structural design, each fixed mounting assembly 5 comprises a mounting seat 501, first springs 502, a fixing plate 503, a second spring 504, a telescopic rod 505 and a limiting plate 506, the first springs 502 are symmetrically arranged on the left and right of the inner side of the mounting seat 501, the fixing plate 503 is arranged on the inner side of the first spring 502, the outside of mount pad 501 is and be provided with second spring 504 along the length direction symmetry, the department is provided with telescopic link 505 in the middle of the outside of mount pad 501, the outside of second spring 504 and telescopic link 505 is provided with limiting plate 506, the appearance structure of mount pad 501 is the design of U-shaped structure, the appearance structure of limiting plate 506 is the design of L-shaped structure, fixed mounting subassembly 5 is the connection that can dismantle in the slip with shunt release mounting groove 3, supplementary contact mounting groove 4's connected mode.

Referring to fig. 1 to 3, the overall shape of the fixed mounting assembly 5 is an inverted T-shaped structure, and the cross sections of the shunt release mounting groove 3 and the auxiliary contact mounting groove 4 are both designed to be inverted T-shaped structures, so that when the fixed mounting assembly 5 is mounted in the shunt release mounting groove 3 and the auxiliary contact mounting groove 4, only the fixing plate 503 needs to be pinched inward and then placed in the shunt release mounting groove 3 and the auxiliary contact mounting groove 4, and after the fixing plate 503 is loosened, the second spring 504 can completely clamp the fixing plate 503 into the shunt release mounting groove 3 and the auxiliary contact mounting groove 4, thereby facilitating the mounting and dismounting of the shunt release and the auxiliary contact, and being firmer after the connection.

Referring to fig. 1 to 3, the shunt release and the auxiliary contact can be fixed on the inner side of the mounting base 501 from both sides by the first spring 502 and the fixing plate 503, so that the shunt release and the auxiliary contact are more firmly fixed in the fixed mounting assembly 5, and further, when the shunt release and the auxiliary contact are mounted, the shunt release and the auxiliary contact cannot slide off from the groove due to collision of external force.

The working process of the utility model is as follows: when the shunt release is installed, firstly, the two fixing plates 503 are pulled to two sides, then the shunt release is placed between the two fixing plates 503, then the fixing plates 503 are loosened, at the moment, the fixing plates 503 are pushed to the inner side by the first springs 502, then the fixing plates 503 fix the shunt release in the installation seat 501 from two sides, then the fixing plates 503 are pressed to the inner side, at the moment, the second springs 504 are compressed, then the fixed installation assembly 5 is integrally placed in the shunt release installation groove 3, the fixing plates 503 are loosened, at the moment, the fixing plates 503 can move to the outer side and are completely clamped in the shunt release installation groove 3, therefore, the installation of the shunt release is completed, the dismounting operation is not required, and the same operation is also required when the auxiliary contacts are installed in the same manner.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a moulded case circuit breaker tripping device, includes circuit breaker drain pan (1), its characterized in that: the circuit breaker is characterized in that an electric brake pushing handle (2) is arranged in the middle of the interior of a circuit breaker bottom shell (1), a shunt release mounting groove (3) is formed in the interior of the circuit breaker bottom shell (1) and located on the left side of the electric brake pushing handle (2), an auxiliary contact mounting groove (4) is formed in the interior of the circuit breaker bottom shell (1) and located on the right side of the electric brake pushing handle (2), fixed mounting assemblies (5) are arranged in the shunt release mounting groove (3) and the auxiliary contact mounting groove (4), and a jacking plate (6) is arranged below the electric brake pushing handle (2).

2. The molded case circuit breaker trip mechanism of claim 1, wherein: the sections of the shunt release mounting groove (3) and the auxiliary contact mounting groove (4) are designed to be inverted T-shaped structures.

3. The molded case circuit breaker trip mechanism of claim 1, wherein: fixed mounting subassembly (5) are including mount pad (501), first spring (502), fixed plate (503), second spring (504), telescopic link (505) and limiting plate (506), the inboard bilateral symmetry of mount pad (501) is provided with first spring (502), the inboard of first spring (502) is provided with fixed plate (503), the outside of mount pad (501) is and be provided with second spring (504) along the length direction symmetry, the department is provided with telescopic link (505) in the middle of the outside of mount pad (501), the outside of second spring (504) and telescopic link (505) is provided with limiting plate (506).

4. The molded case circuit breaker trip mechanism of claim 3, wherein: the appearance structure of the mounting seat (501) is designed to be a U-shaped structure.

5. The molded case circuit breaker trip mechanism of claim 3, wherein: the appearance structure of the limiting plate (506) is designed to be an L-shaped structure.

6. The molded case circuit breaker trip mechanism of claim 1, wherein: the fixed mounting assembly (5) is connected with the shunt release mounting groove (3) and the auxiliary contact mounting groove (4) in a sliding and detachable mode.