CN104241037B

CN104241037B - Leakage circuit breakers

Info

Publication number: CN104241037B
Application number: CN201410427610.XA
Authority: CN
Inventors: D·伯萨特里
Original assignee: Gewiss SpA
Current assignee: Gewiss SpA
Priority date: 2013-06-21
Filing date: 2014-06-23
Publication date: 2018-06-26
Anticipated expiration: 2034-06-23
Also published as: CN104241037A; EP2816583B1; ITMI20131033A1; EP2816583A1; ES2640098T3

Abstract

A kind of leakage circuit breakers, which is characterized in that it includes at least one movable contact, and the movable contact acts on fixed contact；The movable contact is connected to first terminal, and the fixed contact is connected to Second terminal；Test circuit, the test circuit have pattern profile blade-like part, and the pattern profile blade-like part is connected to the Second terminal；The button of spring is acted on, the button can be got at from outside；When the button is pressed, the spring is closed the test circuit, realizes the contact with the pattern profile blade-like part；The test circuit further comprises test contact elastic plate and resistor；The test contact elastic plate is coupled to the resistor, and is contacted with the spring；When the movable contact is in the closed position, is contacted with the fixed contact, the elastic plate is contacted with the movable contact.

Description

Leakage circuit breakers

Technical field

The present invention relates to a kind of leakage circuit breakers (residual-current circuit breaker).

Background technology

It is well known that fault current causes danger to user with the load for being connected to electric wire in order to prevent, usually in household And industry system in leakage circuit breakers is provided.

Substantially, leakage circuit breakers detect fault current there are when open-circuit line, therefore interrupt power supply to arrangement Load or multiple load supplyings in downstream.

Leakage circuit breakers disconnection after, once and system correct service condition it is recovered, leakage circuit breakers is just It must reset.

Leakage circuit breakers generally has testing button, may be such that cut-off breaker, simulated failure are possibly realized by button, To check the correct operation of disconnection system.

The testing button is mounted in a part for the test circuit inside leakage circuit breakers.

EP1916692 discloses a kind of leakage circuit breakers with test circuit, such as the breaker of other general types It is internal the same, it is assembled by brazing operation.Equally, test circuit is functionally connected by conducting wire to the behaviour of breaker Make component.

EP1562212 discloses a kind of test equipment with resistance, is obtained using first and second current path of resistance With electrical connection.Test equipment has electric connection line, and an end of the electric connection line is configured as spring contact elements so that the Electrical connection between one current path and the second current path can be by overcoming corresponding spring force to be formed.

The problem of being always existed in the design and manufacturing process of leakage circuit breakers is to provide a kind of component with smallest number And the structure being easily assembled to, to reduce production cost, at the same time, it is ensured that the maximum reliability of the device and safety.

Invention content

It is an object of the present invention to provide a kind of leakage circuit breakers with test circuit, and the test circuit is relative to traditionally Simpler construction is capable of providing used in the test circuit of such breaker.

Within the scope of the target, the object of the present invention is to provide a kind of leakage circuit breakers, allow not any Assembling test circuit in the case of brazing operation and conducting wire.

It is a further object to provide a kind of breaker, by its specific architectural characteristic, can be to using in Reliability and safety provide maximum guarantee.

It hereinafter will be more apparent from the target and these and other objects and pass through a kind of leakage, breaking Device realizes that the leakage circuit breakers is characterized in that, it includes at least one movable contact, acts on fixed contact；It is described Movable contact is connected to first terminal, and the fixed contact is connected to Second terminal；The breaker is characterized in that, It includes test circuit, which has pattern profile blade-like part, be connected to the Second terminal；Act on spring Button, the button can get at from outside；When the button is pressed, the spring is closed the test circuit, realizes With the contact of the pattern profile blade-like part；The test circuit further comprises test contact elastic plate and resistor；Institute It states test contact elastic plate and is coupled to the resistor, and contact with the spring；It is closed when the movable contact is in described When closing position, being contacted with the fixed contact, the elastic plate is contacted with the movable contact.

Description of the drawings

From the description of the embodiment of the present invention of preferred but non-exclusive property, further characteristic and advantageous effect will become It must become apparent from, be shown via example unrestricted in attached drawing, wherein：

Fig. 1 is the side view of leakage circuit breakers internal part, which has test circuit according to the present invention, And it is shown with the state of contact closure；

Fig. 2 is relative to the partial side view of the opposite side of foregoing figures, shows the open circuit in contact closure state Device；

Fig. 3 is the side view of leakage circuit breakers internal part, is shown with the state that contact disconnects；

Fig. 4 is the decomposition perspective view of test circuit；

Fig. 5 is another perspective view of test circuit；

Fig. 6 is the perspective view of spring, elastic bullet plate, resistor and test contact；

Fig. 7 is the perspective view of leakage circuit breakers, is shown together with its shell, applies conducting wire to test contact in proper Situation during elastic plate；

Fig. 8 is the enlarged perspective in test contact elastic plate region；

The view of figure, shows the step of being inserted into screwdriver end at test contact elastic plate before Fig. 9 is analogous to；

The view of figure before Figure 10 is analogous to, shows the step of conducting wire is inserted into test contact elastic plate；

The view of figure, shows the conducting wire that institute's slot is put before Figure 11 is analogous to.

Specific embodiment

With reference to the attached drawing of reference, the whole leakage circuit breakers according to the present invention specified by reference numeral 1 includes support and ties Structure 2 is equipped with the actuation handle 3 for controlling contact actuating mechanism in the support construction 2.

Contact has at least one main movable contact 4, acts on main fixed contact 5.

Movable contact 4 is connected to first terminal 6 by conducting wire 7.

Fixed contact 5 is connected to Second terminal 8.

According to the present invention, breaker 1 has the whole test circuit specified by reference numeral 10, including installation to support Pattern profile blade-like part (contoured blade) 11 in structure 2.

Pattern profile blade-like part 11 is preferably made of stainless steel.

Pattern profile blade-like part 11 is by realizing that the protruding portion contacted with the end of external cable is connected to Second terminal 8, which connect with terminal 8.

Test circuit further includes spring 12, and the button 13 that can be got at from outside is acted on the spring 12.

When spring 12 touches pattern profile blade-like part 11 by the action of button 13, spring 12 can be closed electricity Road.

Test circuit 10 further includes test contact elastic plate 14, test contact elastic plate 14 be coupled to resistor 15 and with Spring 12 is in contact.

Test contact elastic plate 14 is configured to the end of the tool engagement electric wire 18 by for example screwdriver 17 etc.

Fig. 7-11 is the schematic diagram of operation order for the end of conducting wire 18 to be made to be engaged with plate 14.

Resistor 15 adjusts the ampere-turn of the test circuit of the nominal characteristic variation with leakage circuit breakers.It produces dduring test The raw electric current actually necessarily specific product of the residual current of the device.

There are two flexible tabs for second plate 16 tool：When movable contact 4 is in the close position, the first flexible tab 161 with The lead of resistor 15 is in contact, and the second flexible tab 162 is in contact with the protruding portion 41 of movable contact 4, such as in figures 4 and 5 As more clearly from showing.

For the disconnection of movable contact, there are two types of situations for test circuit tool.

In breaker during normal operation, when movable contact 4 is closed on fixed contact 5, spring 12 and blade-like part 11 are separated from each other, and therefore test circuit normally disconnects.

Under normal operation, by acting on button 13, spring 12 is moved to be contacted with blade-like part 11, is closed Test circuit and leakage circuit breakers is made to disconnect automatically.

When button 13 is pressed a period of time and the time is longer than the drop-away time (tripping time) of leakage circuit breakers When, generate the second case for disconnecting movable contact 4.

Normally, movable contact 4 is in the close position, the second elasticity of 41 and second plate 16 of protruding portion of movable contact 4 Tab 162 is inconsistent.

The drop-away time that testing button 13 is more than leakage circuit breakers is pressed by holding, automatic disconnect of movable contact 4 is drawn The disconnection of test circuit is played, movable contact is made to move away the second plate, therefore avoids electric current and continues in circuit, and therefore Avoid the failure of resistor 15.

In practice it has been found that the present invention realizes the purpose and target of anticipation, the survey of the leakage circuit breakers provided Examination circuit is simpler to manufacture relative to the test circuit structure for being traditionally applied to such breaker.

The important of the present invention is had the advantage that without any brazing operation and the situation without using conducting wire It is lower that test circuit is mounted in leakage circuit breakers.

This application claims Italian Patent Application No. be MI2013A001033, be filed in the application on June 21st, 2013 Priority, theme are merged into herein by reference.

Claims

1. a kind of leakage circuit breakers, which is characterized in that it includes at least one movable contact, and the movable contact acts on fixation Contact；The movable contact is connected to first terminal, and the fixed contact is connected to Second terminal；The spy of the breaker Sign is that the breaker includes：Test circuit, the test circuit have pattern profile blade-like part, the pattern profile blade Shape part is connected to the Second terminal；The button of spring is acted on, the button can be got at from outside；When the button is pressed During pressure, the spring is closed the test circuit, realizes the contact with the pattern profile blade-like part；The test circuit into One step includes test contact elastic plate and resistor；The test contact elastic plate is coupled to the resistor, and with it is described Spring contacts；When the movable contact is in the closed position, is contacted with the fixed contact, the test contact elasticity Plate is contacted with the movable contact；The test contact elastic plate is configured and adapted to engage the end of external cable；The abnormal shape Profile cutter sheet shaped piece is mounted in a support construction.

2. leakage circuit breakers according to claim 1, which is characterized in that the pattern profile blade-like part relies on and outside The protruding portion of the end contact of cable is connected to the Second terminal, which connect with the Second terminal.

3. leakage circuit breakers according to claim 1, which is characterized in that the test contact elastic plate is configured to by work Tool engages the end of the external cable.

4. leakage circuit breakers according to claim 1, which is characterized in that the resistor adjusts the ampere-turn of test circuit.

5. leakage circuit breakers according to claim 1, which is characterized in that the breaker include the second plate, described second Plate includes two flexible tabs, i.e. the first flexible tab and the second flexible tab；When the movable contact is in and the fixation During the position of contact, first flexible tab and the wire contacts of the resistor, the second flexible tab and the work The protruding portion contact of moving contact.

6. leakage circuit breakers according to claim 3, which is characterized in that the tool is screwdriver.