CN110660619A

CN110660619A - Plastic case circuit breaker

Info

Publication number: CN110660619A
Application number: CN201810695425.7A
Authority: CN
Inventors: 郑敏; 程永远; 刘梨阳
Original assignee: Ningbo Jiangbei Cave Industrial Design Co Ltd
Current assignee: Ningbo Jiangbei Cave Industrial Design Co Ltd
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2020-01-07

Abstract

The invention discloses a molded case circuit breaker, which comprises a body, wherein a toggle switch is arranged on the front surface of the body, a plurality of wiring grooves are formed in two ends of the body, wiring terminals are arranged in the wiring grooves, the wiring terminals are installed in the wiring grooves through bolts, protective covers made of insulating materials are rotatably arranged on the wiring grooves, the protective covers are provided with side baffles for covering the side surfaces of the wiring grooves, the side baffles are provided with openings through which power supply wires pass, connecting plates made of iron materials are arranged at the end parts of the side baffles, electromagnets are arranged on the side walls of the body and positioned below the connecting plates, and the electromagnets are used for attracting the connecting plates after. The invention provides a molded case circuit breaker which has the characteristics of simple structure and convenience in production, has a safety protection structure, and can prevent people from directly contacting a wiring terminal when a circuit works.

Description

Plastic case circuit breaker

Technical Field

The invention relates to the field of electrical equipment, in particular to a molded case circuit breaker.

Background

In the field of electrical equipment today, the use of circuit breakers is very widespread. The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-voltage and low-voltage boundary lines are relatively vague, and the circuit breakers above 3kV are generally called high-voltage electric appliances.

The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. At present, it has been widely used.

The current circuit breaker, its connecting terminal that is used for connecting the electric wire is exposed, and this will have the potential safety hazard, can lead to unexpected the emergence.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the molded case circuit breaker which has the characteristics of simple structure and convenience in production, has a safety protection structure and can prevent people from directly contacting a wiring terminal when a circuit works.

In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a moulded case circuit breaker, includes the body, the body openly is provided with toggle switch, the body both ends are provided with a plurality of wiring groove, be provided with binding post in the wiring groove, the bolt is installed for binding post in the wiring groove, it is provided with the protection casing that insulating material made to rotate on the wiring groove, the protection casing is provided with and covers the side shield of wiring groove side, the side shield is provided with the opening that the power supply line passed, the side shield tip is provided with the connecting plate that iron material made, be provided with the electro-magnet on the lateral wall of body, the electro-magnet is located the connecting plate below, it is right after the electro-magnet circular telegram the connecting plate produces and attracts.

In the above technical solution, preferably, a through hole for a screwdriver to pass through is provided on the front surface of the protective cover, and the through hole is opposite to the bolt of the connection terminal.

In the above technical solution, preferably, the diameter of the through hole is larger than the diameter of the bolt of the connection terminal.

In the above technical solution, preferably, the size of the gap is not smaller than the size of the wire connecting slot.

In the above technical solution, preferably, the protective cover is transparent, so that a structure below the protective cover can be clearly observed by people.

The invention provides a molded case circuit breaker which has the characteristics of simple structure and convenience in production, has a safety protection structure, and can prevent people from directly contacting a wiring terminal when a circuit works.

Drawings

Fig. 1 is a schematic structural view of a conventional molded case circuit breaker.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of the operation of the protective cover of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: as shown in fig. 1 to 3, a molded case circuit breaker, includes body 1, body 1 openly is provided with toggle switch 10, body 10 both ends are provided with a plurality of wiring groove 11, be provided with binding post 13 in the wiring groove 11, binding post 13 is installed with the bolt in the wiring groove 11, it is provided with protective cover 2 that insulating material made to rotate on the wiring groove 11, protective cover 2 is provided with the cover the side shield 21 of wiring groove 11 side, side shield 21 is provided with the opening that the power supply line passed, side shield 21 tip is provided with the connecting plate 22 that the iron material was made, be provided with electro-magnet 141 on body 1's the lateral wall 14, electro-magnet 141 is located connecting plate 22 below, it is right after electro-magnet 141 circular telegram connecting plate 22 produces and attracts the usefulness.

The front surface of the protective cover 2 is provided with a through hole 23 for a screwdriver to pass through, and the through hole 23 is opposite to the bolt of the wiring terminal 13.

The diameter of the through-hole 23 is larger than the diameter of the bolt of the connection terminal 13.

The size of the gap is not smaller than that of the wiring slot 11.

The protective cover 2 is transparent, so that the structure below the protective cover 2 can be clearly observed by people.

The device is provided with the protective cover 2, the protective cover 2 can be firstly installed at a preset position, and then the breaker is installed on the installation plate. By the arrangement, a large amount of time can be saved when the circuit breakers are installed in a large batch.

In the state where the circuit breaker is energized, the electromagnet 141 and the connection plate 22 are firmly attracted together and cannot be easily separated. When the breaker needs to be detached, the power needs to be cut off, so that the electromagnet 141 is powered off and does not generate a magnetic field. In this case, since it is a safe situation, the operator can operate the device freely.

The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.

Claims

1. A molded case circuit breaker, characterized in that: comprises a body (1), a toggle switch (10) is arranged on the front surface of the body (1), a plurality of wiring grooves (11) are arranged at the two ends of the body (10), wiring terminals (13) are arranged in the wiring grooves (11), the wiring terminal (13) is installed in the wiring groove (11) by bolts, a protective cover (2) made of insulating materials is rotatably arranged on the wiring groove (11), the protective cover (2) is provided with a side baffle (21) which covers the side surface of the wiring groove (11), the side baffle (21) is provided with a gap through which a power supply line passes, the end part of the side baffle (21) is provided with a connecting plate (22) made of iron material, an electromagnet (141) is arranged on the side wall (14) of the body (1), the electromagnet (141) is positioned below the connecting plate (22), and the electromagnet (141) is used for attracting the connecting plate (22) after being electrified.

2. A molded case circuit breaker according to claim 1, characterized in that: the front surface of the protective cover (2) is provided with a through hole (23) for a screwdriver to pass through, and the through hole (23) is opposite to a bolt of the wiring terminal (13).

3. A molded case circuit breaker according to claim 2, wherein: the diameter of the through hole (23) is larger than the diameter of a bolt of the connecting terminal (13).

4. A molded case circuit breaker according to claim 1, characterized in that: the size of the gap is not smaller than that of the wiring groove (11).

5. A molded case circuit breaker according to claim 1, characterized in that: the protective cover (2) is transparent, so that the structure below the protective cover (2) can be clearly observed by people.