CN210200651U - Miniature circuit breaker with unilateral bus bar wiring port - Google Patents

Abstract

The utility model provides a miniature circuit breaker with a unilateral busbar wiring port, which comprises a shell, an electromagnetic assembly, an arc extinguish chamber and a tripping assembly; a wire inlet end is arranged on one side of the circuit breaker and is connected with a first wiring terminal of a line to be detected; the other side is provided with a wire outlet end which is connected with a second wiring terminal of the line to be detected; the wire inlet end is provided with a first wiring screw and a first wiring frame, and the first wiring screw is connected with the first wiring frame and is arranged adjacently up and down; the wire outlet end comprises a second wiring screw, a second wiring frame and a second connecting component, and the second wiring screw and the second wiring frame are arranged adjacently up and down; the second connecting component is made of conductive materials and is connected between the second wiring screw and the second wiring frame. The outlet end of the miniature circuit breaker is provided with a bus bar wiring port, so that convenience is brought to a user for wiring use and the application field is expanded.

Description

Miniature circuit breaker with unilateral bus bar wiring port

Technical Field

The utility model relates to a circuit breaker, specific theory relates to a miniature circuit breaker with unilateral busbar wiring mouth.

Background

The Micro Circuit Breaker (Micro Circuit Breaker) is suitable for overload and short Circuit protection of a line with rated voltage of 50/60Hz, rated current of 230/400V and rated current of 63A, can also be used for infrequent operation and conversion of the line under normal conditions, is mainly used in various places such as industry, commerce, high-rise and civil houses, is generally arranged in a distribution box, and is a most widely used terminal protection electrical appliance in a building electrical terminal distribution device. The conventional miniature circuit breaker, such as products DZ47-63, has only one wiring mode, namely, the wiring is performed from a wiring frame, and the wiring is not used for wiring, so that the application function and the scene of the conventional miniature circuit breaker are difficult to expand.

In addition, the tripping part of the conventional miniature circuit breaker, such as C65, DZ47-63, etc., is shown in fig. 7, and includes a rotating plate 34, a contact holder 35 and a torsion spring 36, wherein the rotating plate 34 and the contact holder 35 are connected through the torsion spring 36, so that when the rotating plate 34 rotates, the torsion spring 36 drives the contact holder 35 to rotate, and the tripping structure includes many parts, which brings inconvenience to material management, storage, etc., and simultaneously is not favorable for improving the assembly efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a take miniature circuit breaker of unilateral busbar wiring mouth, this miniature circuit breaker not only convenience of customers wiring use, extension application, simultaneously, the partial formula structure as an organic whole of dropout does benefit to material management, storage, and can improve miniature circuit breaker's assembly efficiency.

Based on the above purpose, the utility model provides a miniature circuit breaker with unilateral busbar wiring mouth, including casing, electromagnetic component, explosion chamber and dropout subassembly;

the tripping assembly is connected in a circuit to be protected and comprises a tripping part and a deflector rod part, and the tripping part is arranged in the shell; one end of the deflector rod part is connected with the tripping part, and the other end of the deflector rod part extends out of the shell; the tripping assembly is used for instantaneously acting to control the disconnection of the line to be protected when a fault occurs in the line to be protected;

the electromagnetic assembly is arranged in the shell, is adjacent to the tripping assembly, and is used for carrying out fault detection on a line to be protected and controlling the tripping assembly to instantaneously act to disconnect the line to be protected when the line to be protected has a fault;

the arc extinguishing chamber is arranged in the shell, is positioned below the electromagnetic assembly and the tripping assembly, and is used for isolating or extinguishing electric arcs in the circuit breaker;

a wire inlet end is arranged on one side of the circuit breaker and is connected with a first wiring terminal of a line to be detected; the other side of the circuit breaker is provided with a wire outlet end which is connected with a second wiring terminal of the circuit to be detected, and when the circuit breaker is closed, the first wiring terminal is conducted with the second wiring terminal; when the circuit breaker is disconnected, the first connecting terminal and the second connecting terminal are not conducted;

the wire inlet end is provided with a first wiring screw and a first wiring frame, and the first wiring screw is connected with the first wiring frame and is arranged adjacently up and down;

the wire outlet end comprises a second wiring screw, a second wiring frame and a second connecting component, and the second wiring screw and the second wiring frame are arranged adjacently up and down; the second connecting component is made of a conductive material, is connected between the second wiring screw and the second wiring frame, and is used for connecting a second wiring terminal of the line to be detected with the line of the electromagnetic assembly;

a first wiring port is formed in the shell corresponding to the first wiring frame; the shell is provided with a bus bar wiring port corresponding to the second wiring screw, a second wiring port corresponding to the second wiring frame is arranged, and a part of the second wiring component is exposed at the second wiring port.

Preferably, the first wire frame is a rectangular frame formed by bending a plate, and a first bolt hole for fixing the first wire bolt is formed in the top of the first wire frame.

Preferably, the second connecting member is a bent plate-shaped structure, the top of the second connecting member is perpendicular to the second terminal screw, and is provided with a through hole for the second terminal screw to pass through, one end of the top of the second connecting member extends downwards along the inner wall of the housing and is bent into the second terminal frame, and the other end of the top of the second connecting member extends towards the electromagnetic assembly and is connected with the electromagnetic coil in the electromagnetic assembly.

Preferably, the second wire frame is a rectangular frame formed by bending a plate, and a second bolt hole for fixing a second wire bolt is formed in the top of the second wire frame.

Preferably, the bottom of the arc extinguish chamber adjacent to the outlet end is provided with an arc baffle which is fixed on the inner wall of the shell.

Preferably, the trip portion includes a contact support;

the middle part of the contact support is fixed on the inner wall of the shell through a pin shaft and can rotate along the pin shaft, the top of the contact support is connected with the deflector rod part through a pull rod, and when the deflector rod part rotates under the action of external force, the pull rod drives the contact support to rotate;

the contact support bottom is connected with a moving contact, and when the contact support rotates, the moving contact is driven to move.

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

1) the wiring port structure of the outlet end of the existing miniature circuit breaker is improved, so that the miniature circuit breaker is convenient for a user to use in wiring, and meanwhile, the application field is expanded.

2) The tripping part is of an integrated structure, so that material management and storage are facilitated, and the assembly efficiency of the miniature circuit breaker can be improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic view of an appearance structure of a micro circuit breaker with a single-side bus bar connection port according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an appearance structure of a miniature circuit breaker with a single-side bus bar connection port according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an internal structure of a miniature circuit breaker with a single-side bus connection port according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first wiring frame of the miniature circuit breaker with a single-side bus bar wiring port in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second wiring member of the miniature circuit breaker with a single-side bus bar wiring port according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second wire frame of the miniature circuit breaker with a single-side bus bar wire connection port in the embodiment of the present invention;

fig. 7 is a schematic structural view of a trip unit in the prior art;

fig. 8 is a schematic structural diagram of a contact support of a micro circuit breaker according to an embodiment of the present invention.

Wherein, 1, a shell; 2. an electromagnetic coil; 4. an arc extinguishing chamber; 5. an arc barrier; 6. a bimetal;

11. a first wiring port; 12. a second bus bar connection port; 13. a second wiring port;

21. static contact;

31. a moving contact; 32. a contact support; 33. a pin shaft; 34. rotating the plate; 35. a contact holder; 36. a torsion spring;

71. a first binding screw; 72. a first wiring frame;

721. a first bolt hole;

81. a second binding screw; 82. a second wire frame; 83. a second wiring member;

821. a second bolt hole; 831. a through hole; 832. and a terminal.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The embodiment provides a miniature circuit breaker with a unilateral bus bar connection port, as shown in fig. 1-3, the miniature circuit breaker comprises a shell 1, an electromagnetic assembly, an arc extinguish chamber 4 and a tripping assembly;

the tripping assembly is connected in a circuit to be protected and comprises a tripping part and a driving lever part, and the tripping part is arranged in the shell 1; one end of the deflector rod part is connected with the tripping part, and the other end of the deflector rod part extends out of the shell 1; the tripping assembly is used for instantaneously acting to control the disconnection of the line to be protected when a fault occurs in the line to be protected;

the electromagnetic assembly is arranged in the shell 1, is adjacent to the tripping assembly, and is used for carrying out fault detection on a line to be protected and controlling the tripping assembly to instantaneously act to disconnect the line to be protected when the line to be protected has a fault;

the arc extinguish chamber 4 is arranged in the shell 1, is positioned below the electromagnetic assembly and the tripping assembly, and is used for isolating or extinguishing electric arcs in the circuit breaker;

a wire inlet end is arranged on one side of the circuit breaker and is connected with a first terminal 832 of a line to be detected; the other side is provided with an outlet terminal which is connected with a second terminal 832 of the line to be detected, and when the breaker is closed, the first terminal 832 is conducted with the second terminal 832; when the circuit breaker is open, the first terminal 832 is non-conductive with the second terminal 832;

the wire inlet end is provided with a first wiring screw 71 and a first wiring frame 72, and the first wiring screw 71 is connected with the first wiring frame 72 and is arranged vertically and adjacently;

the wire outlet end comprises a second wiring screw 81, a second wiring frame 82 and a second connecting component, and the second wiring screw 81 and the second wiring frame 82 are arranged vertically and adjacently; the second connecting member is made of a conductive material, is connected between the second terminal screw 81 and the second terminal frame 82, and is used for connecting a second terminal 832 of a circuit to be detected with the circuit of the electromagnetic assembly;

a first wiring port 11 is arranged on the shell 1 corresponding to the first wiring frame 72; a bus bar wiring port is arranged on the housing 1 corresponding to the second wiring screw 81, a second wiring port 13 is arranged corresponding to the second wiring frame 82, and a part of the second wiring member 83 is exposed at the second wiring port 13.

Specifically, the lower end of the tripping component is provided with a movable contact 31, the lower end of the electromagnetic component is provided with a fixed contact 21, a first terminal 832 of the line to be detected is connected with a temperature-sensing bimetallic strip 6 through a first wiring port 11 of a wire inlet end of the shell 1, and the bimetallic strip 6 is connected with the movable contact 31 in the tripping component; a second terminal 832 of the line to be detected is connected with a second wiring member 83 through a second bus bar wiring port 12 or a second wiring port 13 of the outlet end of the shell 1, the second wiring member 83 is provided with a terminal 832, the terminal 832 is connected with one end of an electromagnetic coil 2 in the electromagnetic component, and the other end of the electromagnetic coil 2 is connected with a static contact 21; therefore, under the condition that the line to be detected is conducted without fault, the movable contact 31 is contacted with the fixed contact 21, so that the current passing route in the first terminal 832 is as follows: a first terminal 832-a bimetallic strip 6-a movable contact 31-a fixed contact 21-an electromagnetic coil 2-a second wiring member 83-a second terminal 832; when the line to be detected has an overcurrent or short-circuit fault, the tripping component acts to separate the movable contact 31 from the static contact 21, and the line is blocked, so that the line to be detected is disconnected.

As a preferred embodiment, as shown in fig. 4, the first wire frame 72 is a rectangular frame formed by bending a plate material, and a first bolt hole 721 for fixing the first wire bolt 71 is provided at the top thereof.

As a preferred embodiment, as shown in fig. 5, the second connecting member is a bent plate-shaped structure, the top of the second connecting member is perpendicular to the second binding screws 81, and a through hole 831 for the second binding screws 81 to pass through is provided, one end of the top of the second connecting member extends downwards along the inner wall of the housing 1 and is bent into the second binding frame 82, and the other end of the top of the second connecting member extends towards the electromagnetic assembly and is connected with the electromagnetic coil 2 in the electromagnetic assembly.

As a preferred embodiment, as shown in fig. 6, the second wire frame 82 has a rectangular frame shape formed by bending a plate material, and a second bolt hole 821 for fixing the second wire screw 81 is provided at the top thereof.

As a preferred embodiment, as shown in fig. 3, an arc-isolating plate 5 is disposed at the bottom of the arc-extinguishing chamber 4 adjacent to the outlet end, and the arc-isolating plate 5 is fixed on the inner wall of the housing 1 for preventing the fuse wire near the outlet end from being blown by the arcing.

As a preferred embodiment, as shown in fig. 3, the trip portion includes a contact holder 32, and the specific structure of the contact holder 32 is shown in fig. 8;

the middle part of the contact support 32 is fixed on the inner wall of the shell 1 through a pin shaft 33 and can rotate along the pin shaft 33, the top part of the contact support 32 is connected with a driving lever part through a pull rod, but when the driving lever part rotates under the action of external force, the pull rod drives the contact support 32 to rotate;

the bottom of the contact support 32 is connected to the movable contact 31, and when the contact support 32 rotates, the movable contact 31 is driven to move toward or away from the fixed contact 21.

To sum up, the utility model discloses a wiring mouth structure to current miniature circuit breaker's leading-out terminal improves to make its convenience of customers use of working a telephone switchboard, expand application field simultaneously. Furthermore, the utility model discloses trip portion formula structure as an organic whole does benefit to material management, storage, and can improve miniature circuit breaker's assembly efficiency.

Further, it should be noted that:

in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (6)

1. A miniature circuit breaker with a unilateral bus bar wiring port comprises a shell (1), an electromagnetic component, an arc extinguish chamber (4) and a tripping component,

the tripping assembly is connected in a circuit to be protected and comprises a tripping part and a driving lever part, and the tripping part is arranged in the shell (1); one end of the deflector rod part is connected with the tripping part, and the other end of the deflector rod part extends out of the shell (1); the tripping assembly is used for instantaneously acting to control the disconnection of the line to be protected when a fault occurs in the line to be protected;

the electromagnetic assembly is arranged in the shell (1), is adjacent to the tripping assembly and is used for carrying out fault detection on a line to be protected, and when the line to be protected has a fault, the electromagnetic assembly controls the tripping assembly to instantaneously act to disconnect the line to be protected;

the arc extinguishing chamber (4) is arranged in the shell (1), is positioned below the electromagnetic assembly and the tripping assembly and is used for isolating or extinguishing electric arcs in the circuit breaker;

one side of the circuit breaker is provided with a wire inlet end which is connected with a first terminal (832) of a circuit to be detected; the other side is provided with an outlet terminal which is connected with a second terminal (832) of the circuit to be detected, and when the breaker is closed, the first terminal (832) is conducted with the second terminal (832); the first terminal (832) is non-conductive with the second terminal (832) when the circuit breaker is open;

it is characterized in that the preparation method is characterized in that,

the wire inlet end is provided with a first wiring screw (71) and a first wiring frame (72), and the first wiring screw (71) is connected with the first wiring frame (72) and is arranged vertically and adjacently;

the wire outlet end comprises a second wiring screw (81), a second wiring frame (82) and a second connecting component, and the second wiring screw (81) and the second wiring frame (82) are arranged adjacently up and down; the second connecting component is made of conductive materials, is connected between the second wiring screw (81) and the second wiring frame (82), and is used for connecting a second terminal (832) of a circuit to be detected with the circuit of the electromagnetic assembly;

a first wiring port (11) is formed in the shell (1) corresponding to the first wiring frame (72); a bus bar wiring port is arranged on the shell (1) corresponding to the second wiring screw (81), a second wiring port (13) is arranged corresponding to the second wiring frame (82), and a part of the second wiring member (83) is exposed out of the second wiring port (13).

2. The miniature circuit breaker with single-sided busbar junction according to claim 1, wherein the first junction frame (72) is a rectangular frame formed by bending a plate, and a first bolt hole (721) for fixing the first junction screw (71) is formed at the top of the rectangular frame.

3. The miniature circuit breaker with single-sided busbar connection port according to claim 1, wherein the second connecting member is a bent plate-shaped structure, the top of the second connecting member is perpendicular to the second connection screw (81), a through hole (831) for the second connection screw (81) to pass through is provided, one end of the top of the second connecting member extends downwards along the inner wall of the housing (1) and is bent into the second connection frame (82), and the other end of the top of the second connecting member extends towards the electromagnetic assembly and is connected with the electromagnetic coil (2) in the electromagnetic assembly.

4. The miniature circuit breaker with single-sided bus bar connection port according to claim 3, wherein said second connection frame (82) is a rectangular frame formed by bending a plate, and a second bolt hole (821) for fixing a second connection screw (81) is arranged on the top of the rectangular frame.

5. The miniature circuit breaker with the unilateral bus bar wiring port according to claim 1, wherein the bottom of the side of the arc extinguishing chamber (4) adjacent to the wire outlet end is provided with an arc isolating plate (5), and the arc isolating plate (5) is fixed on the inner wall of the shell (1).

6. The miniature circuit breaker with single sided busbar connection according to any of claims 1-5, wherein said trip portion comprises a contact support (32);

the middle part of the contact support (32) is fixed on the inner wall of the shell (1) through a pin shaft (33) and can rotate along the pin shaft (33), the top part of the contact support (32) is connected with the deflector rod part through a pull rod, but when the deflector rod part rotates under the action of external force, the pull rod drives the contact support (32) to rotate;

the bottom of the contact support (32) is connected with a movable contact (31), and when the contact support (32) rotates, the movable contact (31) is driven to move.

Images