WO2018027525A1

WO2018027525A1 - Circuit breaker having self-locking function

Info

Publication number: WO2018027525A1
Application number: PCT/CN2016/094096
Authority: WO
Inventors: 金英花
Original assignee: 金英花
Priority date: 2016-08-09
Filing date: 2016-08-09
Publication date: 2018-02-15

Abstract

A circuit breaker having a self-locking function, comprising: an upper housing (1), a lower housing (2), a self-locking electromagnetic coil (15) and a self-locking elastic rubber sheet (16); the upper housing (1) and the lower housing (2) are in a snap connection; an activation switch (17) is penetratingly connected to a middle portion of the upper housing (1); an upper side and a lower side of the upper housing (1) are respectively provided with a wire inlet groove (3) and a wire outlet groove (4); inner sides of both the wire inlet groove (3) and the wire outlet groove (4) are provided with a wire guide hole (5); an upper side and a lower side of an inner chamber of the lower housing (2) are respectively provided with an input end contact sheet (8) and an output end contact sheet (9); a connecting sheet (10) is arranged between the input end contact sheet (8) and the output end contact sheet (9). The present scheme has a simple structure, and has effective functions of circuit opening and self-locking, thereby protecting the safety of a circuit breaker as well as electrical equipment.

Description

Circuit breaker with self-locking function

Technical field

The invention relates to the field of circuit breakers, in particular to a circuit breaker with a self-locking function.

Background technique

Circuit breaker (English name: circuit-breaker, circuit breaker) refers to the ability to close, carry and break the current under normal loop conditions and can close and carry and break the current under abnormal loop conditions within a specified time. Switching device. The circuit breaker is divided into a high voltage circuit breaker and a low voltage circuit breaker according to its use range.

The existing circuit breaker does not have a self-locking function, so the circuit breaker itself may be burnt and damaged during use, and because it does not have a self-locking function, it may also cause damage to the electrical equipment, resulting in a large economic loss. Traditional circuit breakers that do not have a self-locking function require frequent repairs and replacements, adding unnecessary expenses.

Summary of the invention

It is an object of the present invention to provide a circuit breaker with a self-locking function to solve the problems set forth in the background art described above.

In order to achieve the above object, the present invention provides the following technical solution: a circuit breaker with a self-locking function, comprising an upper casing, a lower casing, a self-locking electromagnetic coil and a self-locking elastic rubber sheet, wherein: the upper casing and the lower casing The starter switch is connected to the middle of the upper casing through the snap connection, and the upper side and the lower side of the upper casing are respectively provided with an inlet slot and an outlet slot, and the inner side of the inlet slot and the outlet slot are provided with a lead hole

a mounting bracket is disposed on an outer side of the lower casing, and a mounting hole is defined in a middle portion of the mounting bracket, and an input end contact piece and an output end contact piece are respectively disposed on an upper side and a lower side of the inner cavity of the lower outer casing, a connecting piece is disposed between the input end contact piece and the output end contact piece;

The middle portion of the connecting piece is embedded in the ceramic insulator, and the ceramic insulator is fixedly mounted on the upper portion of the connecting piece mounting frame. The lower side of the connecting piece mounting frame is fixedly connected with a self-locking rotating shaft, and both ends of the self-locking rotating shaft Rotatingly connected to the two side walls of the lower casing;

a permanent magnet is fixedly connected to a lower portion of the connecting piece, the permanent magnet is located at a position corresponding to a position of the start switch, the self-locking electromagnetic coil is located at a lower side of the permanent magnet, and the self-locking electromagnetic coil is fixed to an inner wall of the lower outer casing Connected, and the self-locking electromagnetic coil is electrically connected to the output contact piece;

The upper end of the connecting piece is located on the lower side of the input end contact piece, and the self-locking elastic rubber piece is located on the lower side of the upper end of the connecting piece.

Preferably, the input contact piece and the output end contact piece are each provided with three groups, and the input end contact piece and the output end contact piece correspond in a vertical direction.

Preferably, the number of the connecting piece and the permanent magnet are respectively provided in three groups, and the connecting piece is respectively used for connecting three phases A, B and C of the line, and the self-locking electromagnetic coil corresponds to the number of connecting pieces, and both are located Connect the underside of the piece.

Preferably, the mounting brackets are provided with at least four groups and are evenly arranged outside the lower casing.

Compared with the prior art, the invention has the beneficial effects that the invention can facilitate the opening and closing of the control circuit by adding the input contact piece and the output end contact piece, thereby being capable of functioning as an open circuit by adding a self-locking electromagnetic coil. When the circuit is faulty and short-circuited, the self-locking electromagnetic coil can be turned on, so that the same magnetic polarity is generated with the permanent magnet, and the repulsive force is generated, so that the connecting piece rotates around the self-locking rotating shaft, and the self-locking elastic rubber sheet is engaged. The circuit is disconnected, and the connecting piece is not rebounded, thereby playing the role of self-locking. The invention has the advantages of simple structure, can effectively play the role of self-locking of the circuit breaker, and protect the safety of the circuit breaker itself and the electrical equipment.

DRAWINGS

Figure 1 is a schematic structural view of the present invention;

Figure 2 is a plan view of the lower casing of the present invention;

Figure 3 is a side view of the lower casing of the present invention.

In the figure: 1 upper casing, 2 lower casing, 3 inlet trough, 4 outlet trough, 5 conductor hole, 6 mounting bracket, 7 mounting hole, 8 input contact piece, 9 output contact piece, 10 connecting piece, 11 ceramic Insulator, 12-joint mount, 13 self-locking shaft, 14 permanent magnets, 15 self-locking solenoids, 16 self-locking elastic rubber sheets, 17 start switch.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1-3, the present invention provides a technical solution: a circuit breaker with a self-locking function, including an upper casing 1, a lower casing 2, a self-locking electromagnetic coil 15, and a self-locking elastic rubber piece 16, an upper casing 1 and the lower casing 2 are connected by a snap connection, and a start switch 17 is connected through the middle of the upper casing 1 , and the upper side and the lower side of the upper casing 1 are respectively provided with the inlet groove 3 and the outlet groove 4, the inlet groove 3 and the outlet groove 4 The inner side is provided with a wire hole 5 for inserting the wire.

The outer side of the lower casing 2 is provided with a mounting bracket 6. The mounting bracket 6 is provided with at least four sets, and is evenly arranged on the outer side of the lower outer casing 2. The mounting bracket 6 is provided with a mounting hole 7 in the middle thereof, so that the circuit breaker can be installed more stably. The upper end side and the lower side of the inner cavity of the lower casing 2 are respectively provided with an input end contact piece 8 and an output end contact piece 9, and the input end contact piece 8 and the output end contact piece 9 are respectively provided with three groups, and the input end contacts the piece 8 and The output contact piece 9 corresponds in the vertical direction, and the connecting piece 10 is disposed between the input end contact piece 8 and the output end contact piece 9, and the connection of the connecting piece 10 and the two sets of contact pieces is controlled, thereby controlling the entire circuit. On and off, to protect the power equipment.

The middle portion of the connecting piece 10 is embedded in the ceramic insulator 11. The ceramic insulator 11 is fixedly mounted on the upper portion of the connecting piece mounting frame 12. The lower side of the connecting piece mounting frame 12 is fixedly connected with the self-locking rotating shaft 13, and the two ends of the self-locking rotating shaft 13 are respectively Rotatingly connected to the two side walls of the lower casing 2, in the event of a failure, the connecting piece 10 can be rotated about the self-locking rotating shaft 13 to avoid burning the circuit breaker.

The lower portion of the connecting piece 10 is fixedly connected with a permanent magnet 14 whose position corresponds to the position of the start switch 17, the self-locking electromagnetic coil 15 is located at the lower side of the permanent magnet 14, and the self-locking electromagnetic coil 15 is fixed to the inner wall of the lower outer casing 2 The connection, the self-locking electromagnetic coil 15 and the output end contact piece 9 are electrically connected, and the number of the connecting piece 10 and the permanent magnet 14 are respectively provided in three groups, and the connecting piece 10 is respectively used for connecting the three-phase A, B and C of the line, and is self-locking. The electromagnetic coil 15 corresponds to the number of the connecting pieces 10, and is located on the lower side of the connecting piece 10. When the line is faulty and short-circuited, the self-locking electromagnetic coil 15 is energized, thereby generating the same magnetic pole as the permanent magnet 14, causing a repulsive action to make the connection. The sheets 10 are disconnected from the input end contact piece 8 and the output end contact piece 9, respectively, and function as an open circuit protection.

The upper end of the connecting piece 10 is located on the lower side of the input end contact piece 8, and the self-locking elastic rubber piece 16 is located on the lower side of the upper end of the connecting piece 10, and the tab that is bounced under the limit of the self-locking elastic rubber piece 16 10 will not touch the input contact piece 8 and the output end contact piece 9 again, thereby functioning as a self-locking until the operator presses the start switch 17 again to turn the circuit breaker on.

The structure and principle of the invention are simple, so it is easy to produce and use, is easy to maintain, and has a good self-locking protection function for circuit breaking.

While the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art The scope of the invention is defined by the appended claims and their equivalents.

Claims

A circuit breaker with a self-locking function, comprising an upper casing, a lower casing, a self-locking electromagnetic coil and a self-locking elastic rubber piece, wherein: the upper casing and the lower casing are connected by a snap connection, and the upper casing is connected through a middle portion There is a start switch, and the upper side and the lower side of the upper casing are respectively provided with an inlet slot and an outlet slot, and the inner side of the inlet slot and the outlet slot are provided with a lead hole;

The upper side and the lower side of the inner cavity of the lower casing are respectively provided with an input end contact piece and an output end contact piece, and a connecting piece is arranged between the input end contact piece and the output end contact piece;

The middle portion of the connecting piece is embedded in the ceramic insulator, and the ceramic insulator is fixedly mounted on the upper portion of the connecting piece mounting frame. The lower side of the connecting piece mounting frame is fixedly connected with a self-locking rotating shaft, and both ends of the self-locking rotating shaft Rotatingly connected to the two side walls of the lower casing;

a permanent magnet is fixedly connected to a lower portion of the connecting piece, the permanent magnet is located at a position corresponding to a position of the start switch, the self-locking electromagnetic coil is located at a lower side of the permanent magnet, and the self-locking electromagnetic coil is fixed to an inner wall of the lower outer casing Connected, and the self-locking electromagnetic coil is electrically connected to the output contact piece;

The upper end of the connecting piece is located on the lower side of the input end contact piece, and the self-locking elastic rubber piece is located on the lower side of the upper end of the connecting piece.
A circuit breaker with a self-locking function according to claim 1, wherein: an outer side of the lower casing is provided with a mounting bracket, and a mounting hole is formed in a middle portion of the mounting bracket.