CN216980467U - Circuit breaker - Google Patents

Abstract

The utility model discloses a circuit breaker, comprising two metal inner cylinders arranged opposite to each other, each metal inner cylinder is connected with a wiring part, and the circuit breaker also comprises two metal inner cylinders, one of which has an inner metal cylinder There is a gas-generating agent, and one side of the gas-generating agent is connected with the starting line; the device of the utility model adopts the cooperation between the gas-generating agent, the metal inner cylinder and the metal movable parts, when a fire occurs, the gas-generating agent generates gas to push The metal movable parts move, so that the two metal inner cylinders are disconnected, so that the electrical equipment can be powered off in time when a fire occurs, and the overall structure is simple and efficient, which is conducive to popularization and application in the field of electrical equipment.

Description

a circuit breaker

technical field

The utility model relates to the technical field of fire protection, in particular to a circuit breaker.

Background technique

In the case of a fire caused by igniting combustibles on the hot surface of an electric heating appliance, a fire caused by lightning or a fire caused by static electricity, in order to avoid greater damage to the electrical equipment and reduce the difficulty of extinguishing the fire, it is necessary to promptly carry out the electrical equipment. Power off.

However, the general protection circuit needs to rely on the power supply or the backup power supply to protect the electrical equipment from power failure, and the protection circuit is also easily damaged, and the phenomenon of power failure often occurs.

Utility model content

The purpose of the present utility model is to overcome the above-mentioned deficiencies, and to provide a circuit breaker, which can power off the electrical equipment in time when a fire occurs.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the utility model is as follows: a circuit breaker includes two metal inner cylinders arranged opposite to each other, each metal inner cylinder is connected with a wiring part, and it also includes two metal inner cylinders connected with each other. Metal inner cylinders, one of which is provided with a gas-generating agent, and one side of the gas-generating agent is connected to the starting line.

Preferably, the two metal inner cylinders are arranged on opposite sides of the insulating casing, and the metal inner cylinders are connected to the wiring part located at the end of the insulating casing.

Preferably, a metal end cover is provided on the inner side of the end of the insulating shell, one side of the metal end cover is matched with the inner ring of the metal inner cylinder, and the surface of the metal end cover and the surface of the wiring part are provided with fixing holes for passing screws hole.

Preferably, a through hole for passing the activation wire is opened inside the metal movable member, and a wire hole for passing the activation wire is opened on one side of the metal end cover and the wiring part.

Preferably, the activation wire is a thermal wire structure.

Preferably, the activation wire is an electric ignition head structure.

Preferably, the surface of the metal inner cylinder is further provided with a spring locking member for locking the metal movable member.

Preferably, the spring locking member includes a limit cylinder fixed on the surface of the metal inner cylinder and the inner side of the insulating shell, a limit plug is arranged in the limit cylinder, and the top of the limit plug is connected to the limit cylinder through a compression spring. The top of the body is connected, and the bottom of the limit pin is matched with the arc groove formed on the surface of the metal movable part.

The beneficial effects of the present utility model:

The device of the utility model adopts the cooperation between the gas-generating agent, the metal inner cylinder and the metal movable part. When a fire occurs, the gas-generating agent generates gas to push the metal movable part to move, so that the connection between the two metal inner cylinders is disconnected. In this way, the electrical equipment can be powered off in time when a fire occurs, and the overall structure is simple and efficient, which is beneficial to popularization and application in the field of electrical equipment.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a circuit breaker;

Fig. 2 is a top-view structural schematic diagram of a circuit breaker;

Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2;

FIG. 4 is an enlarged schematic structural diagram of the spring locking member in FIG. 3 .

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, a circuit breaker includes two metal inner cylinders 2 arranged opposite to each other, each metal inner cylinder 2 is connected with a wiring part 3, and it also includes sliding with the two metal inner cylinders 2 A gas generating agent 5 is provided in one of the metal inner cylinders 2 of the matched metal movable parts 4 , and one side of the gas generating agent 5 is connected to the starting line 9 .

Preferably, two metal inner cylinders 2 are disposed on opposite sides of the insulating casing 1 , and the metal inner cylinders 2 are connected to the wiring portion 3 located at the end of the insulating casing 1 . In this embodiment, the insulating casing 1 can protect the inner metal inner cylinder 2 .

Preferably, a metal end cover 7 is provided on the inner side of the end of the insulating casing 1, one side of the metal end cover 7 is matched with the inner ring of the metal inner cylinder 2, and the surface of the metal end cover 7 and the surface of the wiring part 3 are provided with useful in the fixing hole 8 through which the screw is inserted. After this design, the metal inner cylinder 2 can be limited by the metal end cap 7, and the metal end cap 7 and the wiring part 3 can be connected by screws. Through the above process, the wiring part 3 and the metal inner cylinder 2 are also electrically connected. .

Preferably, a through hole 4.1 for passing the activation wire 9 is formed inside the metal movable member 4, and a wire hole 10 for passing the activation wire 9 is opened on one side of the metal end cover 7 and the wiring part 3. In this embodiment, the starting line 9 can ignite the gas generating agent 5, and the gas generating agent 5 can be selected from an aerosol generating agent. When it is ignited, a large amount of gas can be generated, so that the metal movable member 4 can be pushed to move.

Preferably, the activation line 9 can have the following two implementations:

First, the activation wire 9 is a thermal wire structure. In this way, when a fire occurs, the thermal wire can be used without relying on the electrical signal output device, and the fire point can directly ignite the starting wire 9 , and then the starting wire 9 ignites the gas generating agent 5 .

Second, the starting wire 9 is an electric ignition head structure. In this way, a detection device can be installed in the electrical equipment. The signal line of the detection device is connected to the controller, and the output end of the controller is connected to the start line 9. When a fire or overheating occurs, the detection device detects the fire in the fire-extinguishing area. After the high temperature environment, a signal is sent to the controller, and the controller controls the starting line 9 to ignite the gas generating agent 5 . In this embodiment, the detection device is a temperature sensor and/or a smoke sensor, and the controller can select 51 single-chip microcomputer, and the model is 80C51 single-chip microcomputer.

Preferably, the surface of the metal inner cylinder 2 is further provided with a spring locking member 6 for locking the metal movable member 4 . The spring locking member 6 can prevent the metal movable member 4 from slipping due to vibration during the normal use of the electrical equipment.

Preferably, the spring locking member 6 includes a limit cylinder 6.1 fixed on the surface of the metal inner cylinder 2 and the inner side of the insulating housing 1, and a limit plug 6.2 is arranged in the limit cylinder 6.1, and the limit plug 6.2 The top is connected to the top of the limiting cylinder 6.1 through a compression spring 6.3, and the bottom of the limiting plug 6.2 is matched with the arc groove 4.2 formed on the surface of the metal movable part 4. After this design, during the normal use of the electrical equipment, due to the elastic force of the compression spring 6.3, the limit plug 6.2 can be pressed into the arc groove 4.2 opened on the surface of the metal movable part 4, so that the metal movable part 4 can be It will not slip at will, and when the gas generating agent 5 is ignited, a large amount of gas is generated to form a lateral thrust to the metal movable part 4. Due to the arc structure of the arc groove 4.2, the limit plug 6.2 is forced to move upwards, Thus, the locking of the arc groove 4.2 is released, the metal movable member 4 slides and leaves one of the metal inner cylinders 2, the connection between the two metal inner cylinders 2 is disconnected, and the entire electrical equipment is powered off.

The working principle of this embodiment is as follows:

During the normal use of the electrical equipment, due to the elastic force of the compression spring 6.3, the limit plug 6.2 can be pressed into the arc groove 4.2 opened on the surface of the metal movable part 4, so that the metal movable part 4 will not slide freely. Move, as shown in FIG. 3 , the wiring part 3 on the left is electrically connected to the metal inner cylinder 2 on the left through the metal end cap 7 on the left, and the wiring part 3 on the right is connected with the metal end cap 7 on the right. The right metal inner cylinder 2 is electrically connected, and the two metal inner cylinders 2 are electrically connected through the metal movable part 4, so the left wiring part 3 and the right wiring part 3 are in a connected state; When it occurs, the starting line 9 ignites the gas-generating agent 5, and a large amount of gas is generated to form a lateral thrust to the metal movable part 4. Due to the cambered surface structure of the cambered groove 4.2, the limiter pin 6.2 is forced to move upward, thereby releasing the anti-lock force. When the arc groove 4.2 is locked, the metal movable part 4 slides to the right and leaves the metal inner cylinder 2 on the left side, the connection between the two metal inner cylinders 2 is disconnected, and the entire electrical equipment is powered off.

The above-mentioned embodiments are only preferred technical solutions of the present invention, and should not be regarded as limitations of the present invention. The embodiments and features in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present utility model shall take the technical solutions described in the claims, including the equivalent alternatives of the technical features in the technical solutions described in the claims, as the protection scope. That is, equivalent replacements and improvements within this scope are also within the protection scope of the present invention.

Claims (8)

1. The utility model provides a circuit breaker, includes two metal inner tube (2) that set up each other relatively, every metal inner tube (2) all are connected with a wiring portion (3), its characterized in that: the gas generating device further comprises a metal moving part (4) in sliding fit with the two metal inner cylinders (2), wherein a gas generating agent (5) is arranged in one of the metal inner cylinders (2), and one side of the gas generating agent (5) is connected with a starting line (9).

2. A circuit breaker according to claim 1, wherein: two metal inner cylinders (2) are arranged on two sides in the insulating shell (1) relatively, and the metal inner cylinders (2) are connected with wiring parts (3) positioned at the end parts of the insulating shell (1).

3. A circuit breaker according to claim 2, wherein: the insulation housing (1) tip inboard is equipped with metal end cover (7), metal end cover (7) one side and metal inner tube (2) inner circle cooperation, fixed orifices (8) that are used for wearing to establish the screw are all offered on metal end cover (7) surface and wiring portion (3) surface.

4. A circuit breaker according to claim 3, wherein: the metal moving part (4) is internally provided with a through hole (4.1) for penetrating the starting wire (9), and the metal end cover (7) and the wiring part (3) on one side are provided with wire holes (10) for penetrating the starting wire (9).

5. A circuit breaker according to claim 4, wherein: the starting line (9) is of a thermosensitive line structure.

6. A circuit breaker according to claim 4, wherein: the starting wire (9) is of an electric ignition head structure.

7. A circuit breaker according to claim 1, wherein: and the surface of the metal inner cylinder (2) is also provided with a spring locking piece (6) for locking the metal moving piece (4).

8. A circuit breaker according to claim 7, wherein: spring locking piece (6) is including being fixed in spacing barrel (6.1) on metal inner tube (2) surface and insulating casing (1) inboard, be equipped with spacing bolt (6.2) in spacing barrel (6.1), spacing bolt (6.2) top is passed through compression spring (6.3) and is connected with spacing barrel (6.1) top, cambered surface recess (4.2) cooperation that spacing bolt (6.2) bottom and metal moving part (4) surface were seted up.

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