CN1324089A

CN1324089A - Testing button for leakage breaker

Info

Publication number: CN1324089A
Application number: CN 00133938
Authority: CN
Inventors: 泷雄一郎
Original assignee: Kawamura Electric Inc
Current assignee: Kawamura Electric Inc
Priority date: 2000-05-16
Filing date: 2000-11-20
Publication date: 2001-11-28
Anticipated expiration: 2020-11-20
Also published as: CN1230855C; JP2001325873A

Abstract

The test button 2 is formed bent into a nearly crank-shape. One end of the test button 2 projects from an upper surface of a breaker case 5, and a pivotal shaft 6 is provided at a vicinity of the bent portion near the other end, whereby the test button is born to the breaker case 5. The test button 2, if pushed, pivots around the pivotal shaft 6 and pressurizes the test spring 3 with the other end energized in a nearly horizontal direction toward a test spring 3. The test spring 3 is curved to make contact with a tip of a test terminal 4, a test circuit is closed, and a dummy leakage current flows, whereby the action of a ground-fault circuit interrupter 1 can be confirmed. Various parts can be arranged in a space formed underneath the test button 2.

Description

The testing button of residual current circuit breaker

The present invention relates to carry out that the confirming operation of residual current circuit breaker uses makes the simulation leakage current flow through the structure of the testing button that test circuit uses.

In general residual current circuit breaker 11 installation testing circuit (not shown) on the printed base plate 13 that the horizontal direction of the inside of Shell of circuit breaker 12 is provided with as shown in Figure 2.By being flow through, the simulation leakage current whether cuts off the main circuit (not shown) when this test circuit checks that residual current circuit breaker 11 detects electric leakage reliably.

In order to make the simulation leakage current flow through test circuit and on the upper surface of Shell of circuit breaker 12, can cooperate the columniform substantially testing button 14 that forms by synthetic resin etc. movingly up and down, fixedly installing an end of the test spring 16 that forms by tabular conductive strips via being located at solenoid unit 15 on the printed base plate 13 under the testing button 14, under the movable side end of test spring 16, the calibrating terminal 17 that the conductive strips by bar-shaped that are connected to test circuit form vertically uprightly is being set substantially with printed base plate 13.The front end of this calibrating terminal 17 has slight gap and does not contact energising with test spring 16 usually the time.

Usually testing button 14 is outstanding from Shell of circuit breaker 12 by the elastic force of test spring 16 time, if push testing button 14 for the simulation leakage current is flow through, then the lower end of testing button 14 pushes the upper surface of test spring 16, because the test spring that is connected with main circuit 14 is crooked and be contacted with the front end of calibrating terminal 17 and switch on, so the simulation leakage current flows through the action that test circuit also can be confirmed residual current circuit breaker 11.

But occasion at the testing button 14 of pushing residual current circuit breaker 11, because the lower end of testing button 14 is only towards hanging down the direction reinforcing, so must the calibrating terminal unit of test spring 16 and calibrating terminal 17 necessarily be configured in testing button 14 under, exist the various configuration of components that constitute residual current circuit breaker 11 usefulness and also must be restricted such shortcoming.Therefore, can't dispose various parts expeditiously, exist the such shortcoming of residual current circuit breaker 11 maximizations.

Because the problem of the testing button of the residual current circuit breaker of above-mentioned prior art, the object of the present invention is to provide the configuration of calibrating terminal unit such as a kind of test spring or calibrating terminal unrestricted, the various configuration of components that constitute residual current circuit breaker also can freely be carried out small-sized and slim residual current circuit breaker.Its structure is, at least comprising: the test circuit that electric leakage simulation ground is taken place, make the simulation leakage current flow through the testing button of test circuit, and with the operations linkage of testing button in the testing button of the residual current circuit breaker of the calibrating terminal unit of switch testing circuit, testing button is bent to form and is provided with fulcrum, an end that makes testing button is outstanding and the fulcrum axle is fixed in the inboard of Shell of circuit breaker from the upper surface of Shell of circuit breaker, and if pushed from an end of the outstanding testing button of Shell of circuit breaker the other end of testing button towards push direction with applied force calibrating terminal unit closure test circuit.

As above according to the testing button of residual current circuit breaker of the present invention, at least comprising: the test circuit that electric leakage simulation ground is taken place, make the simulation leakage current flow through the testing button of test circuit, and with the operations linkage of testing button in the testing button of the residual current circuit breaker of the calibrating terminal unit of switch testing circuit, testing button is bent to form and is provided with fulcrum, an end that makes testing button is from the outstanding inboard of also the fulcrum axle being fixed in Shell of circuit breaker of the upper surface of Shell of circuit breaker, if pushed from an end of the outstanding testing button of Shell of circuit breaker the other end of testing button towards push direction with applied force the closed test circuit in calibrating terminal unit, can confirm the action of residual current circuit breaker whereby, because there is no need the calibrating terminal configuration of cells is produced the degree of freedom in event under the testing button in the configuration of calibrating terminal unit, the degree of freedom of the various configuration of components of tested person terminal unit restriction also increases, so owing to can carry out various configuration of components efficiently and have and can make the such good result of small-sized and slim residual current circuit breaker.

Fig. 1 is the cutaway view of expression according to residual current circuit breaker of the present invention.

Fig. 2 is the cutaway view of the residual current circuit breaker of expression prior art.

Testing button is bent to form substantially and is crank shape.One side's of testing button end is outstanding from the upper surface of Shell of circuit breaker, and testing button is provided with the fulcrum axle and is supported on Shell of circuit breaker near the bend of close the opposing party's end.If pushed testing button with the fulcrum would be the center rotate and the opposing party's end towards the test spring afterburning test spring that pushes in horizontal direction ground substantially, test spring is crooked and be contacted with the front end of calibrating terminal, test circuit is closed and the simulation leakage current flows through, and can confirm the action of residual current circuit breaker.Under testing button, have living space, can dispose various parts.

Based on the accompanying drawing of Fig. 1 a embodiment according to the testing button of residual current circuit breaker of the present invention is described.

Residual current circuit breaker 1 comprises at least: the test circuit (not shown) that electric leakage simulation ground is taken place, make the simulation leakage current flow through the testing button 2 of test circuit, and with the operations linkage of testing button 2 test spring 3 and the calibrating terminal 4 of switch testing circuit.Can check by making the simulation leakage current flow through this test circuit whether residual current circuit breaker 1 cuts off the main circuit (not shown) reliably when detecting electric leakage.

Testing button 2 is that material bending becomes substantially that crank shape forms with synthetic resin etc.One side's of testing button 2 end is outstanding along vertical substantially direction from the upper surface of Shell of circuit breaker 5, fulcrum 6 is set, 6 inboards that are supported on Shell of circuit breaker 5 of the fulcrum of testing button 2 near the bend near the opposing party's end.

The test spring 3 that forms by tabular conductive strips be connected on main circuit is electric, be configured to contact along vertical substantially direction with the opposing party's of testing button 2 end, the upper end is fixedly installed on the inboard of Shell of circuit breaker 5.Usually testing button 2 makes the upper end outstanding from Shell of circuit breaker 5 by the elastic force of test spring 3 time.

Test circuit is installed in the inside of Shell of circuit breaker 5 and fixedly installs abreast substantially on the printed base plate 7 on top with test spring 3, is provided with towards the direction of test spring 3 is vertical at the calibrating terminal 4 that forms with the conductive strips by bar-shaped that are connected on test circuit is electric on the printed base plate 7.The front end of this calibrating terminal 4 has slight gap and does not contact energising with test spring 3 usually the time.

In order to make the simulation leakage current flow through the test circuit of residual current circuit breaker 1 and carry out confirming operation, push testing button 2.If push testing button 2, then testing button 2 is that rotate and the opposing party's end is afterburning and push test spring 3 towards test spring 3 along horizontal direction substantially at the center with fulcrum 6, test spring 3 is crooked and be contacted with the front end of calibrating terminal 4, and test circuit is closed and the simulation leakage current flows through.Handle 8 cuts off demonstration to residual current circuit breaker 1 once detecting simulation leakage current cut-out main circuit and make electric leakage the Show Button (not shown) outstanding from Shell of circuit breaker 5, can confirm normally to move in the occasion residual current circuit breaker 1 that detects electric leakage.

Moreover, in the present embodiment testing button is formed crank shape substantially, but also can form circular arc substantially, or form L font etc. substantially, so long as be bent to form, about shape without limits, in addition also without limits about the shape of test spring and calibrating terminal.

In addition, calibrating terminal is fixed in printed base plate in the present embodiment, but also can for example be fixed in other member to calibrating terminal, be connected with the test circuit that is configured in the locational printed base plate that separates etc. via lead-in wire and calibrating terminal, about the configuration of the calibrating terminal unit of the switching mechanism formed by calibrating terminal and test spring also without limits, in the scope that does not break away from spirit of the present invention, can suitably change.

Claims

1. the testing button of a residual current circuit breaker, at least comprise: the test circuit that electric leakage simulation ground is taken place, make the simulation leakage current flow through the testing button of this test circuit, and with the operations linkage of this testing button the calibrating terminal unit of the aforementioned test circuit of switch, it is characterized in that, aforementioned testing button is bent to form and is provided with fulcrum, an end that makes aforementioned testing button is outstanding and aforementioned fulcrum axle is fixed in the inboard of aforementioned Shell of circuit breaker from the upper surface of aforementioned Shell of circuit breaker, and if pushed from an end of the outstanding aforementioned testing button of aforementioned Shell of circuit breaker the other end of aforementioned testing button towards push direction with applied force the aforementioned test circuit of aforementioned calibrating terminal unit closure.