CN110828246A

CN110828246A - Wiring device of plug-in circuit breaker

Info

Publication number: CN110828246A
Application number: CN201911307462.7A
Authority: CN
Inventors: 刘磊; 李敏; 张罗; 李焰锋; 师建轩; 丁国辉
Original assignee: Zhejiang Minghui Intelligent Electric Co Ltd
Current assignee: Zhejiang Minghui Intelligent Electric Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-02-21

Abstract

A wiring device of a plug-in circuit breaker. The method is characterized in that: it includes wiring board, stripper plate, elastic component, including stripper plate, briquetting, elastic component, the stripper plate activity sets up in the shell to corresponding with the wiring board, the briquetting activity sets up in the shell, and the shell lateral wall corresponds and is formed with the breach groove, and the elastic component setting can order about the stripper plate and compress tightly the wiring board between briquetting and stripper plate, orders about the briquetting simultaneously and stretches out the breach groove. The plug-in circuit breaker has the advantages that when the plug-in circuit breaker is not inserted into the cabinet, the elastic piece only provides a pretightening force for the extrusion plate to the wiring board, the external lead can be directly plugged in or pulled out to realize wiring and disconnecting operations, other tools are not needed, and the wiring and disconnecting operations are more convenient; insert the rack with plug-in circuit breaker after accomplishing the wiring, just can impress the briquetting inside the shell after target in place to compress the elastic component, reinforcing stripper plate is to the wiring board clamping force, ensures that the wiring is firm reliable be difficult for droing, and connection stability is better.

Description

Wiring device of plug-in circuit breaker

Technical Field

The invention relates to a circuit breaker, in particular to a wiring device of a plug-in circuit breaker.

Background

Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The low-voltage circuit breaker is also called an automatic switch, and is an electric appliance which not only has the function of a manual switch, but also can automatically perform voltage loss, undervoltage, overload and short-circuit protection. It can be used for distributing electric energy, starting asynchronous motor infrequently, protecting power supply circuit and motor, etc., when they are seriously overloaded or short-circuited or under-voltage, etc. faults occur, it can automatically cut off circuit, its function is equivalent to the combination of fuse type switch and over-and under-heat relay, etc., and after breaking fault current, it does not need to change parts, so that it has been extensively used.

The circuit breaker is divided into: the plug-in type circuit breaker, fixed type and drawer type, the use of plug-in type circuit breaker can effectively improve the security of electrical equipment use trade, along with the wide use of plug-in type circuit breaker on various electrical equipment, in order to satisfy the installation needs of various different electrical equipment, the structure of plug-in type circuit breaker also develops to various types, current plug-in type miniature circuit breaker generally adopts screw formula mode of connection access wire, and the wiring operation is more troublesome.

For example, in the small plug-in circuit breaker disclosed in the chinese patent application (CN 107993900A), the outlet terminal B is composed of a spring B2 and a terminal board B1, and when wiring, an external lead is directly inserted into the terminal, and the external lead is pressed against the terminal board B1 by the spring B2.

The terminal structure that is qualified for next round of competitions of above-mentioned structure, because form the contained angle between shell fragment B2 and the wiring board B1, when the wiring, just in time form a guide effect, therefore the wiring operation is very convenient, after accomplishing the wiring, it just in time forms the spacing effect of a pawl again, make external conductor can't directly pull out, therefore, when taking out stitches, need use screwdriver or similar microscler instrument to stretch into in the port and push down shell fragment B2, make shell fragment B2 and wiring board B1 separate, then just can pull out external conductor, it is very inconvenient to take out stitches the operation.

Disclosure of Invention

In order to overcome the defects of the background art, the invention provides a wiring device of a plug-in circuit breaker, which solves the problem that the wiring operation of the outlet terminal of the existing plug-in circuit breaker is inconvenient.

The technical scheme adopted by the invention is as follows: a wiring device of a plug-in circuit breaker is arranged at the outer side end of a shell of the plug-in circuit breaker; it includes wiring board, stripper plate, briquetting, elastic component, wiring board fixed mounting is in the shell, the stripper plate activity sets up in the shell to it is corresponding with the wiring board, the briquetting activity sets up in the shell, the shell lateral wall is formed with the breach groove corresponding with the briquetting, the elastic component sets up between briquetting and stripper plate, can order about the stripper plate and compress tightly the wiring board, orders about the briquetting simultaneously and stretches out the breach groove.

The extrusion plate comprises an extrusion part corresponding to the wiring board, and arc-shaped guide parts are formed at two ends of the extrusion part.

The casing is equipped with the primary shaft in, the relative other end bending of extrusion portion of stripper plate forms the rotating part, the rotating part cover is established on the primary shaft and is formed rotatable cooperation with the primary shaft.

The shell is internally provided with a second shaft, the pressing block is provided with a positioning hole, and the pressing block is rotatably arranged on the second shaft through the positioning hole.

The elastic piece is a spring, and two ends of the elastic piece respectively abut against the pressing block and the extrusion plate.

And the pressing block is provided with a spring positioning column matched with the spring.

The pressing block is provided with a limiting part which is in limiting fit with the edge of the notch groove

The invention has the beneficial effects that: by adopting the scheme, when the plug-in circuit breaker is not inserted into the cabinet, the elastic piece only provides a pretightening force for the extrusion plate to the wiring board, the external lead can be directly inserted or pulled out to realize wiring and disconnecting operation, other tools are not needed, and the wiring and disconnecting operation is more convenient; insert the rack with plug-in circuit breaker after accomplishing the wiring, just can impress the briquetting inside the shell after target in place to compress the elastic component, reinforcing stripper plate is to the binding plate compressive force, thereby ensures that the wiring is firm reliable be difficult for droing, and connection stability is better.

Drawings

Fig. 1 is a schematic structural diagram of a plug-in circuit breaker according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a wiring device when a plug-in circuit breaker is not inserted into a cabinet according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a wiring device when a plug-in circuit breaker is inserted into a cabinet according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of an extrusion plate according to an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a briquette according to an embodiment of the present invention.

Detailed Description

The embodiments of the invention will be further described with reference to the accompanying drawings in which:

as shown in the figure, the wiring device of the plug-in circuit breaker is arranged at the outer side end of a shell 1 of the plug-in circuit breaker and comprises a wiring board 2, a pressing plate 3, a pressing block 4 and an elastic piece 5.

Wiring board 2 fixed mounting is in shell 1, the activity of stripper plate 3 sets up in shell 1 to corresponding with wiring board 2, the activity of briquetting 4 sets up in shell 1, 1 lateral wall of shell is formed with the breach groove 11 corresponding with briquetting 4, elastic component 5 sets up between briquetting 4 and stripper plate 3, can order about stripper plate 3 and compress tightly wiring board 2, orders about simultaneously that briquetting 4 stretches out breach groove 11.

The extrusion plate 3 and the pressing block 4 are hinged in the shell 1, so that the assembly is convenient, the whole space layout is facilitated, and the size is reduced. Specifically, a first shaft 12 is arranged in the shell 1, one end of the extrusion plate 3 is bent to form a rotating part 33, and the rotating part 33 is sleeved on the first shaft 12 and forms rotatable fit with the first shaft 12; a second shaft 13 is arranged in the shell 1, a positioning hole 41 is formed on the pressing block 4, and the pressing block 4 is rotatably arranged on the second shaft 13 through the positioning hole 41. Of course, in addition, the pressing plate 3 and the pressing block 4 may be movably disposed in the housing 1 by other means such as sliding.

The elastic part 5 is a spring, two ends of the elastic part respectively abut against the pressing block 4 and the extrusion plate 3, and in order to ensure stable installation of the spring, the pressing block 4 is further provided with a spring positioning column 42 matched with the spring. Of course, torsion springs or other resilient members may be used.

Usually, when the plug-in circuit breaker is used, the plug-in circuit breaker needs to be inserted into a corresponding slot in a cabinet, when the plug-in circuit breaker is not inserted into the slot of the cabinet, the pressing block 4 can pass through the notch 11 under the action of the elastic piece 5, part of the structure of the pressing block extends out of the shell 1, the elastic force of the elastic piece 5 can be released, and only a pretightening force for the pressing plate is provided for the wiring board, so that an external lead can be easily inserted between the pressing plate 3 and the wiring board 2 or pulled out; when the plug-in circuit breaker is inserted into the slot of the cabinet and inserted in place, the outer wall of the shell of the plug-in circuit breaker forms corresponding contact fit with the inner wall of the slot, the pressing block 4 can be pressed into the shell 1 under the limitation of the corresponding inner wall of the slot, the elastic piece 5 can be extruded, the elastic force is increased, and therefore pressing force for the extrusion plate to the wiring board is provided, at the moment, the extrusion plate 3 and the wiring board 2 can clamp an external lead tightly, the external lead is prevented from being pulled out, and reliable wiring is ensured.

By adopting the scheme, when wiring or disconnecting is needed, the plug-in circuit breaker is pulled out from the cabinet, the external lead can be directly inserted or pulled out to realize wiring and disconnecting operation, other tools are not needed, and the wiring and disconnecting operation is more convenient; after the wiring is finished, the plug-in circuit breaker is inserted into the cabinet, the pressing block is pressed into the shell after the plug-in circuit breaker is in place, so that the elastic piece is compressed, the pressing force of the extrusion plate on the wiring plate is enhanced, the wiring is ensured to be firm and reliable, the falling is not easy, and the connection stability is better

In addition, the extrusion plate 3 further comprises an extrusion part 31 corresponding to the wiring board 2, so that a sufficient contact area between the extrusion plate 3 and the wiring board 2 is ensured, the connection effect is further ensured, arc-shaped guide parts 32 are formed at two ends of the extrusion part 31, a certain guiding effect is achieved on an external lead in the process of butting or disconnecting, and the operation is smooth and easy.

And a limiting part 43 which is in limiting fit with the edge of the notch groove 11 is formed on the pressing block 4, so that the stable installation of the pressing block 4 and the elastic piece 5 is further ensured.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.

Claims

1. A wiring device of a plug-in circuit breaker is arranged at the outer side end of a shell (1) of the plug-in circuit breaker; the method is characterized in that: it includes wiring board (2), stripper plate (3), briquetting (4), elastic component (5), wiring board (2) fixed mounting is in shell (1), stripper plate (3) activity sets up in shell (1) to it is corresponding with wiring board (2), briquetting (4) activity sets up in shell (1), shell (1) lateral wall is formed with breach groove (11) corresponding with briquetting (4), elastic component (5) set up between briquetting (4) and stripper plate (3), can order about stripper plate (3) and compress tightly wiring board (2), orders about briquetting (4) simultaneously and stretches out breach groove (11).

2. A wiring device of a plug-in type circuit breaker according to claim 1, wherein: the extrusion plate (3) comprises an extrusion part (31) corresponding to the wiring board (2), and arc-shaped guide parts (32) are formed at two ends of the extrusion part (31).

3. A wiring device of a plug-in type circuit breaker according to claim 2, characterized in that: be equipped with first axle (12) in casing (1), the other end bending of relative extrusion portion (31) of stripper plate (3) forms rotating part (33), rotating part (33) cover is established on first axle (12) and is formed rotatable cooperation with first axle (12).

4. A wiring device of a plug-in type circuit breaker according to claim 1, wherein: a second shaft (13) is arranged in the shell (1), a positioning hole (41) is formed in the pressing block (4), and the pressing block (4) is rotatably arranged on the second shaft (13) through the positioning hole (41).

5. A wiring device of a plug-in type circuit breaker according to claim 1, wherein: the elastic piece (5) is a spring, and two ends of the elastic piece respectively abut against the pressing block (4) and the extrusion plate (3).

6. The wiring device of a plug-in type circuit breaker according to claim 5, wherein: and a spring positioning column (42) matched with the spring is arranged on the pressing block (4).

7. A wiring device of a plug-in type circuit breaker according to claim 1, wherein: and a limiting part (43) in limiting fit with the edge of the notch groove (11) is formed on the pressing block (4).