CN216646758U

CN216646758U - Testing device mounted on residual-current circuit breaker

Info

Publication number: CN216646758U
Application number: CN202123436029.9U
Authority: CN
Inventors: 陈志敏; 陈凯霞; 董爱丽; 刘志龙
Original assignee: Beijing Bevone Electric Co ltd
Current assignee: Beijing Bevone Electric Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-31
Anticipated expiration: 2031-12-31

Abstract

A testing device installed on a residual current circuit breaker comprises a handle spring, a testing button, a first connecting conductor and a second connecting conductor; the long arm end of the test spring is connected with the test button and is connected with the first connecting conductor when the test button is pressed; the handle spring comprises a first force arm and a second force arm, the second force arm is fixedly connected with the testing spring, when the residual current circuit breaker is in a switching-on state, the first force arm is connected with the second connecting conductor, and when the residual current circuit breaker is in a switching-off state, the first force arm of the handle spring is in an idle state. According to the utility model, the double-breakpoint structure is formed between the handle spring and the second connecting conductor and between the test spring and the first connecting conductor, so that the protection function module of the leakage circuit breaker is prevented from being damaged due to the reverse connection of the circuit breaker, and the leakage circuit breaker is simple and convenient in structure, and is safer and more effective.

Description

Testing device mounted on residual-current circuit breaker

Technical Field

The utility model relates to the field of mechanical equipment, in particular to a testing device installed on a residual current circuit breaker.

Background

The conventional testing device of the electronic residual current circuit breaker has only one breakpoint, namely between a testing spring and a connecting conductor. Like this when the circuit breaker by the reverse connection line, the user presses test button for a long time, even be the circuit breaker is in the separating brake state, electric leakage function module also can be electrified, can cause the damage of electric leakage function module or the damage of circuit breaker.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a testing device installed on an electric leakage circuit breaker, thereby solving the problems in the prior art.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a testing device installed on a residual current circuit breaker comprises a handle spring, a testing button, a first connecting conductor and a second connecting conductor; the first connecting conductor and the second connecting conductor are both connected with a power line, and the long arm end of the test spring is connected with the test button and is connected with the first connecting conductor when the test button is pressed down; the handle spring comprises a first force arm and a second force arm, the second force arm is fixed and is connected with the test spring, when the residual current circuit breaker is in a closing state, the first force arm is connected with the second connecting conductor, and when the residual current circuit breaker is in an opening state, the first force arm of the handle spring is in an idle state.

Preferably, the handle spring is arranged in a ring shape and is coaxially mounted with the handle, and the first force arm and the handle rotate synchronously.

Preferably, the first force arm of the handle spring is connected to the second force arm.

Preferably, the test spring is a cylindrical helical torsion spring.

The utility model has the beneficial effects that: the utility model discloses a testing device installed on an electric leakage circuit breaker, which is characterized in that a double-breakpoint structure is formed between a handle spring and a second connecting conductor and between a testing spring and a first connecting conductor, so that a protection function module of the circuit breaker in a switching-off state can not be electrified even if a testing button is pressed for a long time in a reverse connection state, and the protection function module or the circuit breaker of the electric leakage circuit breaker is prevented from being damaged, thereby being safer and more effective.

Drawings

Fig. 1 is a block diagram of a test apparatus mounted on a circuit breaker;

in the figure, 1-handle spring, 2-test spring, 3-test button, 4-first connection conductor, 5-second connection conductor, 11-first force arm, 12-second force arm.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

A testing device installed on an electric leakage circuit breaker comprises a handle spring 1, a testing spring 2, a testing button 3, a first connecting conductor 4 and a second connecting conductor 5 as shown in figure 1; the first connecting conductor 4 and the second connecting conductor 5 are both connected with a power line, the long arm end of the test spring 2 is connected with the test button 3, and is connected with the first connecting conductor 4 when the test button 3 is pressed; the handle spring 1 is arranged in a ring shape and is coaxially installed with a handle, the handle spring 1 comprises a first force arm 11 and a second force arm 12, the second force arm is fixedly installed and is connected with the test spring, when the electric leakage breaker is in a switching-off state, the first force arm 11 of the handle spring 1 is in a vacant state, when the electric leakage breaker is converted into a switching-on state, the first force arm 11 rotates synchronously with the handle, and the first force arm 11 rotates to be in a state connected with the second connecting conductor 5.

The circular rings connected between the first force arm 11 and the second force arm 12 of the handle spring 1 are all set as torsion springs, the second force arm 12 is fixedly connected with the test spring 2, the first force arm 11 synchronously rotates in the closing process of the residual current circuit breaker, the torsion springs are twisted, and when the residual current circuit breaker is closed, the first force arm 11 is twisted to the connection position of the second connection conductor 5; the testing spring 2 is a cylindrical spiral torsion spring.

The working principle of the testing device arranged on the residual current circuit breaker is as follows: the second force arm of the handle spring 1 is fixedly connected with the test spring 2, when the handle is in a brake-off state, the annular handle spring 1 is in a relaxed state, and the first force arm 12 is in a vacant state; when the residual current circuit breaker is switched from an opening state to a closing state, the first force arm 11 of the handle spring 1 is driven to synchronously rotate clockwise through the rotation of the handle, and when the handle continues to rotate until the handle reaches a closing position, the first force arm 11 is connected with the second connecting conductor 5; at this time, the test button 3 is pressed down, so that the long arm end of the test spring 2 is connected with the first connecting conductor 4, and the test device can be switched on only in a closing state of the residual current circuit breaker and cannot be switched on in an opening state of the residual current circuit breaker.

Examples

Install above-mentioned testing arrangement in electric leakage circuit breaker, work as the circuit breaker is in under the separating brake state, the first arm of force 11 of handle spring 1 is the idle state, and does not link to each other with any conducting structure, so press at this moment test button 3, only can make the long arm end of test spring 2 with first connecting conductor meets, and can not make first arm of force 11 with second connecting conductor meets, still can include a breakpoint in the testing arrangement, no matter electric leakage circuit breaker is the forward state or the reverse state, electric leakage circuit breaker's protect function module can not be electrified to when having avoided electric leakage circuit breaker reverse connection, electric leakage circuit breaker's protect function module is in electrified state continuous work damage that causes always.

By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:

the utility model has the beneficial effects that: the utility model discloses a testing device installed on an electric leakage circuit breaker, which is characterized in that a double-breakpoint structure is formed between a handle spring and a second connecting conductor and between a testing spring and a first connecting conductor, so that a protection function module can not be electrified even if a testing button is pressed for a long time in a reverse connection state, and the protection function module or the circuit breaker of the electric leakage circuit breaker is prevented from being damaged; the utility model has simple structure, convenient installation, and is safer and more effective.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.

Claims

1. A testing device installed on a residual current circuit breaker is characterized by comprising a handle spring, a testing button, a first connecting conductor and a second connecting conductor; the first connecting conductor and the second connecting conductor are both connected with a power line, and the long arm end of the test spring is connected with the test button and is connected with the first connecting conductor when the test button is pressed; the handle spring comprises a first force arm and a second force arm, the second force arm is fixed and is connected with the test spring, when the residual current circuit breaker is in a closing state, the first force arm is connected with the second connecting conductor, and when the residual current circuit breaker is in an opening state, the first force arm of the handle spring is in an idle state.

2. A residual current circuit breaker mounted testing device as claimed in claim 1, characterized in that said handle spring is arranged in a ring shape and is mounted coaxially with the handle, and said first force arm rotates synchronously with said handle.

3. A residual current circuit breaker mounted test device as claimed in claim 2, characterized in that said first arm of said handle spring is connected to said second arm.

4. A residual current circuit breaker mounted test device as claimed in claim 1, characterized in that said test spring is a cylindrical helical torsion spring.