CN209947770U

CN209947770U - Small-size hotness circuit breaker

Info

Publication number: CN209947770U
Application number: CN201920435062.3U
Authority: CN
Inventors: 于海泳; 田波
Original assignee: Nanan Crown Ling Industrial Design Co Ltd
Current assignee: Nanan Crown Ling Industrial Design Co Ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-01-14
Anticipated expiration: 2029-04-02

Abstract

The utility model relates to a small-size thermoinduction circuit breaker, including circuit breaker fixed plate, circuit breaker work box, circuit breaker work box establishes on the circuit breaker fixed plate, circuit breaker connects at the interior top of circuit breaker work box, and circuit breaker fixed plate and circuit breaker work box integrated into one piece. The utility model discloses the good both optimized circuit breaker design, change the design of the fuse that traditional circuit breaker adopted, change into hot sensing material, can avoid changing the produced expense of fuse, change moreover and can continue to use before not burning out equipment completely, the hot sensing material of adoption can change the volume of self according to the heat of the inside transmission of cable, can break off the circuit breaker when the temperature reaches the limit like this, the material of outside adoption is polymer polycarbonate material, it is insulating safe, should use widely.

Description

Small-size hotness circuit breaker

Technical Field

The utility model relates to an electrical equipment field especially relates to a small-size hotness sensing circuit breaker.

Background

The circuit breaker is a switching device which can close, bear and break the current under the condition of a normal loop and can close, bear and break the current under the condition of an abnormal loop within a specified time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size hotness circuit breaker to solve above-mentioned technical problem, for realizing above-mentioned purpose the utility model discloses a following technical scheme:

a small thermal inductance circuit breaker comprises a circuit breaker fixing plate, a circuit breaker working box and a circuit breaker, wherein the circuit breaker working box is arranged on the circuit breaker fixing plate, the circuit breaker is connected to the inner top of the circuit breaker working box, the circuit breaker fixing plate and the circuit breaker working box are integrally formed, four through fixing holes are formed in the circuit breaker fixing plate and are evenly distributed on the circuit breaker fixing plate, connecting wire fastening holes and connecting wire holes are respectively formed in the opposite side surfaces of the circuit breaker working box, the connecting wire holes are arranged on the side bottom surface of the circuit breaker working box opposite to the vertical surface, the connecting wire fastening holes are formed in the side bottom surface of the circuit breaker working box adjacent to the connecting wire holes, an external connecting block, an internal connecting metal, a thermal inductance material and a thermal inductance material supporting column are arranged inside the circuit breaker working box, the external connecting block is symmetrically fixed on the top, the external connecting block abuts against the inner sides of the connecting line fastening hole and the connecting line hole, the internal connecting metal is fixed to the bottom surface of the circuit breaker, the thermal sensing material is arranged around the internal connecting metal, a small part of the thermal sensing material is embedded in the bottom surface of the circuit breaker, the thermal sensing material supporting column is arranged in the center of the circuit breaker fixing plate, and the thermal sensing material supporting column and the circuit breaker fixing plate are integrally formed.

On the basis of the technical scheme, the circuit breaker fixing plate, the circuit breaker working box, the circuit breaker and the thermal inductance material supporting column are made of high-molecular polycarbonate materials, the external connecting block and the internal connecting metal are made of metal copper materials, and the thermal inductance material is made of polyamide nylon materials.

Compared with the prior art, the utility model has the advantages of it is following: the utility model discloses the good both optimized circuit breaker design, change the design of the fuse that traditional circuit breaker adopted, change into hot sensing material, can avoid changing the produced expense of fuse, change moreover and can continue to use before not burning out equipment completely, the hot sensing material of adoption can change the volume of self according to the heat of the inside transmission of cable, can break off the circuit breaker when the temperature reaches the limit like this, the material of outside adoption is polymer polycarbonate material, it is insulating safe, should use widely.

Drawings

Fig. 1 is a general appearance state diagram of the present invention.

Fig. 2 is a detailed schematic view of the bottom surface of the present invention.

Fig. 3 is a schematic overall plan view of the present invention.

In the figure: the circuit breaker comprises a circuit breaker fixing plate 1, a circuit breaker working box 2, a circuit breaker 3, a fixing hole 4, a connecting line fastening hole 5, a connecting line hole 6, an external connecting block 7, an internal connecting metal 8, a thermal sensing material 9 and a thermal sensing material supporting column 10.

Detailed Description

The invention is explained in further detail below with reference to the figures and the embodiments.

The utility model provides a small-size thermoinduction circuit breaker, includes circuit breaker fixed plate 1, circuit breaker work box 2, circuit breaker 3, circuit breaker work box 2 is established on circuit breaker fixed plate 1, circuit breaker 3 connects at the interior top of circuit breaker work box 2, and circuit breaker fixed plate 1 and circuit breaker work box 2 integrated into one piece, be equipped with four penetrating fixed orificess 4 on circuit breaker fixed plate 1, and what arrange evenly sets up on circuit breaker fixed plate 1, connecting wire fastening hole 5, connecting wire hole 6 have been seted up respectively to the opposite side of circuit breaker work box 2, the establishment of connecting wire hole 6 opposite face is at the side bottom surface of circuit breaker work box 2, connecting wire fastening hole 5 sets up the side bottom surface at the circuit breaker work box 2 adjacent with connecting wire hole 6, inside external connection piece 7, internal connection metal 8 of being equipped with of circuit breaker work box 2, The thermal inductance type circuit breaker comprises a thermal inductance material 9 and thermal inductance material supporting columns 10, wherein the external connecting blocks 7 are symmetrically fixed on the top surface of a circuit breaker fixing plate 1, the external connecting blocks 7 are abutted against the inner sides of a connecting wire fastening hole 5 and a connecting wire hole 6, an internal connecting metal 8 is fixed on the bottom surface of a circuit breaker 3, the thermal inductance material 9 is arranged around the internal connecting metal 8, a small part of the thermal inductance material 9 is embedded on the bottom surface of the circuit breaker 3, the thermal inductance material supporting columns 10 are arranged at the central position of the circuit breaker fixing plate 1, and the thermal inductance material supporting columns 10 and the circuit breaker fixing plate 1 are integrally.

The circuit breaker fixing plate 1, the circuit breaker working box 2, the circuit breaker 3 and the thermal inductance material supporting column 10 are made of high-molecular polycarbonate materials, the external connecting block 7 and the internal connecting metal 8 are made of metal copper materials, and the thermal inductance material 9 is made of polyamide nylon materials.

The utility model discloses the theory of operation: when the equipment is used, firstly, an external power supply of the equipment is connected in a connecting wire hole of the equipment, the connected and extracted connecting wires are respectively connected in connecting wire holes of opposite surfaces, then bolts in the connecting wire fastening holes are fastened, so that the connecting wires are fastened in the connecting wire holes, secondly, a circuit breaker of the equipment is pressed down, so that two ends of internal connecting metal at the bottom of the circuit breaker are inserted in the external connecting block, and the connecting state is confirmed, the thermal sensing material in the equipment keeps the original state when the equipment normally operates, the severe thermal expansion phenomenon cannot occur, when the transmitted electric power is too high, or the high-power output state is always kept, the volume of the thermal sensing material in the equipment is sharply increased due to the rise of the temperature, therefore, the thermal sensing material can be propped against the top end of a thermal sensing material supporting column, and the circuit breaker is gradually pushed upwards, when the short-circuit switch reaches a certain position, the internal connection metal at the bottom end of the short-circuit switch can leave the top of the external connection block, so that the short-circuit switch is disconnected, and then the connected electric appliance is checked, so that the potential safety hazard is eliminated.

The foregoing is a preferred embodiment of the present invention, and for those skilled in the art to understand the teaching of the present invention, the changes, modifications, replacements and variations to the embodiments will still fall within the protection scope of the present invention without departing from the principle and spirit of the present invention.

Claims

1. A small thermal inductance circuit breaker is characterized by comprising a circuit breaker fixing plate (1), a circuit breaker working box (2) and a circuit breaker (3), wherein the circuit breaker working box (2) is arranged on the circuit breaker fixing plate (1), the circuit breaker (3) is connected to the inner top of the circuit breaker working box (2), the circuit breaker fixing plate (1) and the circuit breaker working box (2) are integrally formed, four through fixing holes (4) are formed in the circuit breaker fixing plate (1) and are uniformly distributed on the circuit breaker fixing plate (1), connecting wire fastening holes (5) and connecting wire holes (6) are respectively formed in the opposite side surfaces of the circuit breaker working box (2), the vertical surfaces of the connecting wire holes (6) are arranged on the side bottom surfaces of the circuit breaker working box (2), the connecting wires (5) are arranged on the side bottom surfaces of the circuit breaker working box (2) adjacent to the connecting wire holes (6), the circuit breaker is characterized in that an external connection block (7), internal connection metal (8), a thermal sensing material (9) and a thermal sensing material support column (10) are arranged inside the circuit breaker working box (2), the external connection block (7) is symmetrically fixed on the top surface of the circuit breaker fixing plate (1), the external connection block (7) is close to the inner side of the connection line fastening hole (5) and the connection line hole (6), the internal connection metal (8) is fixed on the bottom surface of the circuit breaker (3), the thermal sensing material (9) is arranged around the internal connection metal (8), a small part of the thermal sensing material is embedded in the bottom surface of the circuit breaker (3), the thermal sensing material support column (10) is arranged at the center of the circuit breaker fixing plate (1), and the thermal sensing material support column (10) and the circuit breaker fixing plate (1) are integrally formed.

2. The miniature thermal sensitive circuit breaker according to claim 1, wherein said breaker fixing plate (1), breaker operating case (2), breaker switch (3) and thermal sensitive material supporting column (10) are made of high molecular polycarbonate material, said external connection block (7) and internal connection metal (8) are made of metal copper material, and said thermal sensitive material (9) is made of polyamide nylon material.