CN213459595U

CN213459595U - Miniature circuit breaker

Info

Publication number: CN213459595U
Application number: CN202022534653.1U
Authority: CN
Inventors: 蒋周金; 赵峰; 瞿诗琦; 王旭; 刘明; 洪爱霞
Original assignee: Risecomm Microelectronics Shenzhen Co ltd
Current assignee: Risecomm Microelectronics Shenzhen Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-06-15
Anticipated expiration: 2030-11-05

Abstract

The utility model provides a miniature circuit breaker, which comprises a housin, install first wiring end and second wiring end on the casing, realize the electricity through first wiring board, bimetallic strip, arc striking piece and arc control device between first wiring end and the second wiring end and connect, still install current transformer, singlechip, motor gear drive module, handle, tripping device on the casing, current transformer is connected with singlechip, motor gear drive module electricity in proper order, motor gear drive module stretches out there is the transmission shaft, the handle is connected on the transmission shaft, tripping device rotates and connects on the casing, tripping device one end is connected with bimetallic strip, the other end is connected with the handle. The utility model discloses miniature circuit breaker can not receive low temperature to influence, accurately carries out the work of opening circuit, but also can long-rangely realize the control of opening circuit.

Description

Miniature circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field specifically relates to a miniature circuit breaker.

Background

The miniature circuit breaker is a terminal protection electric appliance which is most widely used in a building electric terminal distribution device.

At present, the overload trip driving device of most of traditional miniature circuit breakers adopts bimetallic strips, and the specific working process is as follows: insert the bimetallic strip with the circuit, when the bimetallic strip flows the current, the bimetallic strip can the heat altered shape, when the current is too big, the bimetallic strip will be out of shape greatly and then trigger the release action, and then break off the circuit, the advantage of adopting the overload trip drive arrangement of bimetallic strip class does not need extra power, as long as the current of circuit exceeds the settlement scope, will arouse that the bimetallic strip generates heat a large amount of variables and then trigger the action that the release opened circuit, belong to one kind of thermal relay, however, its shortcoming is that the influence that receives the ambient temperature change is great, the interference killing feature is poor, the current precision is poor, the uniformity deviation is great in the working range, for example: at low temperature, the overload characteristics of the calibration current have large difference, and the traditional miniature circuit breaker can only realize short-circuit protection and overload protection and cannot be remotely and intelligently controlled.

Disclosure of Invention

To the technical problem, the utility model provides a miniature circuit breaker, which comprises a housin, install first wiring end and second wiring end on the casing, realize the electricity through first wiring board, bimetallic strip, arc striking piece and arc control device between first wiring end and the second wiring end and connect, still install current transformer, singlechip, motor gear drive module, handle, tripping device on the casing, current transformer is connected with singlechip, motor gear drive module electricity in proper order, motor gear drive module stretches out the transmission shaft, the handle is connected on the transmission shaft, tripping device rotates and connects on the casing, tripping device one end is connected with bimetallic strip, the other end is connected with the handle.

Further, still install wireless communication module in the casing, wireless communication module realizes the electricity with the singlechip and is connected.

The utility model has the advantages that:

the utility model discloses miniature circuit breaker can not receive low temperature to influence, accurately carries out the work of opening circuit, but also can long-rangely realize the control of opening circuit.

Drawings

Fig. 1 is an explosion structure diagram of the miniature circuit breaker of the present invention;

FIG. 2 is a view of the assembly structure of the miniature circuit breaker of the present invention;

fig. 3 is a schematic diagram of the circuit of the miniature circuit breaker of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, a miniature circuit breaker includes a housing 10, a first terminal 101 and a second terminal 102 are installed on the housing 10, the first terminal 101 and the second terminal 102 are electrically connected to each other through a first wiring board 103, a bimetal 104, an arc striking plate 105 and an arc extinguishing device 106, a current transformer 107, a single chip 108, a motor gear transmission module 109, a handle 110, a trip mechanism 111 and a power module 112 are further installed on the housing, the current transformer 107 is electrically connected to the single chip 108 and the motor gear transmission module 109 in sequence, the motor gear transmission module 109 extends out of a transmission shaft 113, the handle 110 is connected to the transmission shaft 113, the trip mechanism 111 is rotatably connected to the housing 10, one end of the trip mechanism 111 is connected to the bimetal 104, and the other end is connected to the handle 110, the power module 112 is used for providing the motor gear transmission module 109, The current transformer 107 and the singlechip 108 supply power.

The utility model discloses miniature circuit breaker's theory of operation:

when the handle 110 is manually rotated, the handle 110 drives the tripping mechanism 111 to rotate, so as to drive the bimetallic strip 104 to be separated from the first wiring board 103, the first terminal 101 is disconnected from the second terminal 102, and finally, the disconnection of the whole circuit can be realized; except that manual break-off circuit, the utility model discloses miniature circuit breaker when the short circuit appears, can also accomplish the break-off circuit automatically, specific working process: the single chip microcomputer 108 detects the current in the circuit through the current transformer 107, when the detected current reaches a set value, the motor gear transmission module 109 can be controlled to act, the handle 110 is driven to move through the transmission shaft 113, the handle 110 moves to drive the bimetallic strip 104 to be separated from the first wiring board 103, the first wiring terminal 101 is disconnected from the second wiring terminal 102, and finally the whole circuit can be disconnected.

Further, a wireless communication module 114 is further installed in the housing 10, and the wireless communication module 114 is electrically connected with the single chip 108. Miniature circuit breaker in this scheme can also realize remote control and open circuit, specific working process: when the miniature circuit breaker needs to be remotely controlled to complete circuit breaking work, the remote control equipment sends an instruction to the miniature circuit breaker, at the moment, the wireless communication module 114 receives the instruction and sends the instruction to the single chip microcomputer 108, the single chip microcomputer 108 sends the instruction to the motor gear transmission module 109, and the motor gear transmission module 109 acts to drive the bimetallic strip 104 to be separated from the first wiring board 1037, so that disconnection of a circuit is achieved.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A miniature circuit breaker, characterized in that: the novel energy-saving switch comprises a housin, install first wiring end and second wiring end on the casing, realize the electricity through first wiring board, bimetallic strip, arc striking piece and arc control device between first wiring end and the second wiring end and connect, still install current transformer, singlechip, motor gear drive module, handle, tripping device on the casing, current transformer is connected with singlechip, motor gear drive module electricity in proper order, motor gear drive module stretches out there is the transmission shaft, the handle is connected on the transmission shaft, tripping device rotates and connects on the casing, tripping device one end is connected with the bimetallic strip, the other end is connected with the handle.

2. The miniature circuit breaker of claim 1, wherein: still install wireless communication module in the casing, wireless communication module realizes the electricity with the singlechip and is connected.