CN112885654A

CN112885654A - Design for improving assembly threading efficiency of miniature circuit breaker

Info

Publication number: CN112885654A
Application number: CN201911195589.4A
Authority: CN
Inventors: 金福根; 杨家发
Original assignee: Nanjing Zhengtailong Technology Co ltd
Current assignee: Nanjing Zhengtailong Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-06-01

Abstract

The invention provides a design for improving the assembly threading efficiency of a miniature circuit breaker, which comprises at least two single-pole miniature circuit breakers and circuit breaker shells, wherein each single-pole circuit breaker shell comprises a wire inlet end face (1), a wire outlet end face (2), a wire inlet fastening screw end face (3) and a wire outlet fastening screw end face (4); at least one of the wire inlet end face (1), the wire outlet end face (2), the wire inlet fastening screw end face (3) and the wire outlet fastening screw end face (4) is provided with at least one threading through hole (5), and the number of the threading through holes (5) is at least one; meanwhile, the wiring groove and the wiring groove cover are arranged at corresponding positions to form a complete technical scheme. The advantages are that: in the assembling process of the multi-pole miniature circuit breaker, the element connecting wires of each single pole are led out of the shell from the threading through holes (5) and then wired, so that the assembling efficiency of the miniature circuit breaker and the quality of the connecting wires can be improved.

Description

Design for improving assembly threading efficiency of miniature circuit breaker

Technical Field

The invention belongs to the field of low-voltage electrical appliances, and particularly relates to a multi-pole miniature circuit breaker.

Background

In recent years, the rise of the internet of things of electric power is a trend to use a miniature circuit breaker as an online sensing device at the end of power utilization, so that the functions of the miniature circuit breaker are increased, and the single overcurrent protection is changed into a comprehensive miniature circuit breaker integrating the functions of sampling, communication, control, protection and the like.

Due to the increase of functions, it is imperative to add such things as: the circuit comprises elements such as a phase line current transformer, a leakage current transformer, a temperature sensor, a voltage sampling line and the like, and units such as a sampling circuit, a control circuit, a communication module and the like which are matched with the elements to support the realization of the new functions.

These newly added components, such as: the phase line current transformer, the leakage current transformer, the temperature sensor and the voltage sampling line are all placed inside a shell of each phase line, and each single pole is provided with the elements; then, a shell with the size of a single-pole miniature circuit breaker is independently arranged on the left side or the right side of the miniature circuit breaker and used for placing units such as a sampling circuit, a control circuit, a communication module and the like.

According to the structural design and the assembly mode of the traditional circuit breaker, connecting wires need to be assembled and threaded pole by pole according to a certain assembly sequence, the first pole assembled firstly and the connecting wires of the components inside the first pole can be connected with a circuit unit only by penetrating through other poles assembled later, and the assembly mode has the problems of difficult wire leading and low assembly efficiency; it is more difficult or even impossible to assemble if the connections are to be fed in two directions (circuit units on both left and right sides of the circuit breaker, one part of the connection lines for the components inside each single pole being connected to the left and one part to the right). At the same time, the connecting wires of the elements are likely to be damaged and broken.

Disclosure of Invention

In order to solve the problems, the invention discloses a design for improving the assembly threading efficiency of a miniature circuit breaker, which comprises at least two single-pole miniature circuit breakers and circuit breaker shells, wherein each single-pole circuit breaker shell comprises a wire inlet end face (1), a wire outlet end face (2), a wire inlet fastening screw end face (3) and a wire outlet fastening screw end face (4); at least one end face of the end faces is provided with at least one threading hole (5), and the number of the threading holes (5) is at least one.

On the terminal surface that has set up threading via (5), set up wiring groove (6) simultaneously, threading via (5) set up the optional position in wiring groove (6).

The position of the wiring groove (6) is provided with a wire groove cover (7)

In order to adapt to the combination of miniature circuit breakers with different pole numbers, the wire slot cover (7) can be designed into a single-pole or multi-pole form for combined use and is arranged on the shell of the miniature circuit breaker

The invention has the advantages that: in the assembling process of the multi-pole miniature circuit breaker, the element connecting wires of each single pole are led out of the shell from the threading through holes (5) and then wired, so that the assembling efficiency of the miniature circuit breaker and the quality of the connecting wires can be improved.

Drawings

FIG. 1: a comprehensive schematic diagram of the invention;

FIG. 2: a threading schematic diagram of the element connecting wire during assembly;

FIG. 3: a wiring diagram of the element connection line;

FIG. 4: the installation of the wire slot cover is schematically shown;

FIG. 5: the invention is a schematic diagram for a three-pole miniature circuit breaker;

FIG. 6: the invention is a schematic for a two-pole miniature circuit breaker.

1. The cable comprises a cable inlet end face, a cable outlet end face, a cable inlet fastening screw end face, a cable outlet fastening screw end face, a cable passing hole, a cable groove cover and a connecting cable, wherein the cable inlet end face is 2, the cable outlet end face is 3, the cable inlet fastening screw end face is 4, the cable outlet fastening screw end face is 5, the cable.

Detailed Description

The invention discloses a design for improving the assembly threading efficiency of a miniature circuit breaker, which explains the specific implementation mode of the invention by taking a four-pole miniature circuit breaker as an example that a threading through hole (5), a wiring groove (6) and a wire groove cover (7) are placed on the end surface (4) of an outgoing line fastening screw. Referring to fig. 1, the circuit breaker comprises four single-pole miniature circuit breakers and circuit breaker shells, wherein each single-pole circuit breaker shell comprises a wire inlet end face (1), a wire outlet end face (2), a wire inlet fastening screw end face (3) and a wire outlet fastening screw end face (4); at least one end face of the end faces is provided with at least one threading hole (5), and the number of the threading holes (5) is at least one; a plurality of threading holes (5) can also be arranged according to the number of the connecting wires of the components to be led out, the wire diameter of the connecting wires and other factors.

The end face provided with the threading through hole (5) is also provided with a wiring groove (6), and the threading through hole (5) is arranged at any position in the wiring groove (6); according to the structure of the shell, the threading through hole (5) can be arranged in the middle of the wiring groove (6) and also can be arranged on the edge of the wiring groove (6) or other positions in the wiring groove (6) in consideration of the convenience of forming the shell.

The position of the wiring groove (6) is provided with a wire groove cover (7), and in order to adapt to the combination of miniature circuit breakers with different pole numbers, the wire groove cover (7) can be designed into a single-pole or multi-pole form for combined use, such as: the line slot cover (7) used by the four-pole miniature circuit breaker can be manufactured into four single-pole width-sized line slot covers for independent use, also can be manufactured into two-pole width-sized line slot covers for combined use, or can be manufactured into a whole with a four-pole width-sized line slot cover to be installed on the circuit breaker. The wire slot cover (7) can be designed into a plurality of forms such as a turnover cover or a slot and the like and is arranged on the shell of the miniature circuit breaker.

Referring to fig. 2, when the miniature circuit breaker is assembled, the element connecting wire (8) of each single pole is led out of the housing through the wire passing hole (5).

Referring to fig. 3, the component connection wire (8) of each single-pole miniature circuit breaker is placed inside the wiring groove (6) and connected with the corresponding circuit unit, and the circuit unit can be arranged on the left side of the circuit breaker or on the right side of the circuit breaker.

Referring to fig. 4, the slot cover (7) is installed at the position of the wiring slot (6), so that each connecting wire (8) is effectively protected and does not affect the appearance.

Referring to fig. 5, the same embodiment can be used for a three-pole miniature circuit breaker.

Referring to fig. 6, the same embodiment can be used for a two-pole miniature circuit breaker.

Finally, it is to be noted that: while the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood that the invention is not limited thereto, but is capable of numerous modifications and substitutions as will be apparent to those skilled in the art, all of which are deemed to fall within the scope of the appended claims.

Claims

1. The utility model provides an improve miniature circuit breaker assembly threading efficiency's design, includes two at least unipolar miniature circuit breakers and circuit breaker casing, every unipolar circuit breaker casing all contains inlet wire terminal surface (1), outlet port terminal surface (2), inlet wire fastening screw terminal surface (3), outlet wire fastening screw terminal surface (4), its characterized in that:

at least one of the wire inlet end face (1), the wire outlet end face (2), the wire inlet fastening screw end face (3) and the wire outlet fastening screw end face (4) is provided with a threading through hole (5), and the number of the threading through holes (5) is at least one.

2. The design for improving the assembly threading efficiency of the miniature circuit breaker according to claim 1, characterized in that the threading through hole (5) is arranged on the end face, and the wiring groove (6) is arranged at the same time, and the threading through hole (5) is arranged at any position in the wiring groove (6).

3. The design for improving the assembly threading efficiency of the miniature circuit breaker according to claim 2, characterized in that the wiring groove (6) is provided with a wire groove cover (7).

4. A design for improving the assembly threading efficiency of miniature circuit breakers according to claim 3, characterized in that the width dimension of said slot cover (7) is a single pole width dimension or a multiple pole width dimension.