CN208923006U - A kind of test button device for electric arc alarm circuit breaker - Google Patents

Abstract

The utility model discloses a kind of test button devices for electric arc alarm circuit breaker, it includes test button, test button bottom is equipped with reed, the reed includes movable end and fixing end, the fixing end is fixed in the shell, the movable end can be by test button press and test contact, the fixing end side, which is equipped with, constitutes the touch spring being linked with operating mechanism, one end of the touch spring is connect with tripping coil, the second position of the fixation end in contact of when other end of the touch spring is with the breaker closing and first position of the fixation end in contact of reed and breaker open operation Shi Buyu reed, the touch spring being linked using the operating mechanism with breaker, when circuit-breaker switching on-off may be implemented, the state change of touch spring and reed, carrying out guarantee test button only can be just when closing a floodgate Often work, and in separating brake, the movement of test button will not make leak(age) test circuit work, and improve the security performance of entire breaker.

Description

A kind of test button device for electric arc alarm circuit breaker

Technical field

The utility model relates to Low Voltage Electrical Apparatus, more specifically to a kind of examination for electric arc alarm circuit breaker Test PBU pushbutton unit.

Background technique

With the raising of economic rapid development and people's lives, electricity consumption is also being continuously increased.It is electrical caused by electricity consumption Fire rises year by year, it has also become causes the main reason of fire.In order to reduce the generation of electrical hazard, various electic protections are set It is standby to become indispensable part in electric wiring.

Electric arc is insulator by after voltage breakdown, becomes natural phenomena that is conductive and emitting light and heat by non-conductive, is commonly called as " beating Arc ".Arc fault has sudden, concealment and randomness.Fault electric arc is security risk common in electric wiring, failure Electric arc occurs at route defective insulation or poor contact, it is also possible to occur in the electric wire connection point of loosening and aging or break In the route of the damage and junction of electric appliance circuits.Fault electric arc is generally divided into three kinds, is serial arc, parallel arc and right respectively Ground electric arc.In electric short circuit fire, ground-fault arc short circuit causes the danger of fire maximum, because electric arc has very greatly Impedance and voltage drop, it limits fault current, makes the akinesia of over-current protection electric appliance or cannot act in time to cut off Power supply, the localized hyperthermia of several amperes of electric arcs may be up to 3000~4000 DEG C, and the neighbouring combustible that is enough to ignite is on fire.

Fault electric arc breaker (Arc Fault Circuit Interrupters, abbreviation AFCI) technology is one newest Circuit protection technology, main function is to prevent the fire as caused by fault electric arc.When arc fault occurs, due to current strength It is smaller, lower than the setting value for the overcurrent protection that electric system especially low-voltage distribution field is installed extensively, at distribution line end End installation fault electric arc breaker (AFCI) is timely discovery electric arc and cuts off circuit, and effectively reduce that electric arc causes damages arranges It applies.

And be directed to fault electric arc breaker leak(age) test button, at present it is most of be all by the pressing of test button come Power-on circuit inside conducting, and the test button makes regardless of whether the breaker is in combined floodgate or gate-dividing state and can be pressed Electric-leakage detection circuit conducting is obtained, and in gate-dividing state, if test button is misused, electric current is excessive to will lead to tripping coil It burns, to influence the normal work of breaker.

Utility model content

In view of the above-mentioned problems, the utility model provides a kind of test button device for electric arc alarm circuit breaker.

To achieve the above object, the utility model provides a kind of test button device for electric arc alarm circuit breaker, Test button including constituting axial sliding cooperation with shell, the test button bottom are equipped with reed, and the reed includes living Moved end and fixing end, the fixing end are fixed in the shell, and the movable end can be by test button press and test Contact, the fixing end side, which is equipped with, constitutes the touch spring that is linked with operating mechanism, and the one of the touch spring End is connect with tripping coil, when the other end of the touch spring is with breaker closing and the fixation end in contact of reed first The second position of the fixation end in contact of position and breaker open operation Shi Buyu reed.

There are angles between the movable end and fixing end of the reed.

The shell is equipped with card slot, and the fixing end of the reed is embedded in the card slot.

It extends vertically to form a L-type structure on rear side of the fixing end, one end of the touch spring is located at the L-type knot Between structure and fixing end, and when there is the touch spring operating mechanism to close a floodgate the on state touched with L-type structure and The off-state that operating mechanism separating brake Shi Buyu L-type structure is touched.

The movable end bends downward to form contact jaw.

The movable end forms line department close to fixing end side.

The two sides of the test button are formed there through sliding slot, and constitute axial sliding with the limited post on shell and cooperate.

The utility model has the beneficial effects that the touch spring being linked using the operating mechanism with breaker, Ke Yishi When existing circuit-breaker switching on-off, the state change of touch spring and reed, carrying out guarantee test button only being capable of normal work when closing a floodgate Make, and in separating brake, the movement of test button will not make leak(age) test circuit work, and improve the safety of entire breaker Energy.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the schematic internal view of the utility model.

Fig. 3 is the enlarged diagram at the cooperation of test button and reed.

Fig. 4 is the cooperation schematic diagram of reed and touch spring.

Fig. 5 is the structural schematic diagram of reed.

Fig. 6 is the main view of reed.

Specific embodiment

It is with reference to the accompanying drawings and embodiments, practical new to this in order to illustrate more clearly of the technical solution of the utility model The technical solution of type is further elaborated, it should be apparent that, some implementations of only the utility model are described below Example, for those of ordinary skill in the art, without creative efforts, can also be according to these embodiments Obtain other embodiments.

The utility model provides a kind of test button device for electric arc alarm circuit breaker, the electric arc alarm circuit breaker Shell is generally comprised, the intracorporal breaker body of shell and arc fault detection device are located at.

The test button device includes the test button 2 that axial sliding cooperation is constituted with shell 1, the test button 2 Two sides are formed there through sliding slot 21, and constitute axial sliding with the limited post on shell and cooperate, and shell includes middle cover and two sides It covers, forms limited post 11 on middle cover, the sliding slot of the test button is set on the outside of the limited post, and is covered by side cover, thus Test button is moved along the axis direction of shell, and the bottom of test button is equipped with reed 3, the reed 3 wraps Movable end and fixing end are included, the fixing end is fixed in the shell, and the movable end 31 and fixing end of the reed There are angles between 32a.I.e. so that the reed constitutes one end fixes, the mobilizable lever construction of the other end, by being pressed with test The cooperation of button can make movable end use as contact.

The i.e. described movable end can be equipped with and operation by test button press and test contact, 32 side of fixing end Mechanism 5 constitutes the touch spring 4 being linked, and the touch spring is torsional spring, is set on operating mechanism, can be with behaviour Make mechanism rotation and act, one end of the touch spring is electrically connected with tripping coil, and the other end of the touch spring has The fixation end in contact of the when breaker closing and first position of the fixation end in contact of reed and breaker open operation Shi Buyu reed The second position.So that the switching of conducting with disconnection in circuit-breaker switching on-off, may be implemented in the touch spring.In separating brake, touching Head spring and reed disconnect, so that hookup will not be connected with the movement of test button, and only when closing a floodgate, contact bullet Spring is connected with reed, at this point, the movement of test button will drive hookup work.

The shell is equipped with card slot, and the fixing end of the reed is embedded in the card slot, and the card slot is using horizontally disposed Slot structure, fixed part is embedded in the slot structure, while the front end of card slot is equipped with a block, the one of the block and switch jaw contact Face meeting fillet, plays the role of fulcrum, so that the leverage effects of reed are more preferably, and then makes fixing end edge in the rear side of slot structure Vertical direction extends.

It extends vertically to form a L-type structure 321 on rear side of the fixing end, one end of the touch spring is located at the L Between type structure and fixing end, and when there is the touch spring operating mechanism to close a floodgate the on state touched with L-type structure with And the off-state touched in operating mechanism separating brake Shi Buyu L-type structure.

The movable end bends downward to form contact jaw 311, and contact jaw is arranged in parallel with movable end, and smooth between the two Excessively setting adjust at a distance between the two according to the stroke of test button, so that when test button presses completely, The contact jaw can just with test contact.

The movable end forms line department 312 close to fixing end side, the further elasticity for improving reed, so as to its After being used for multiple times, moreover it is possible to it is normal to restore, improve the service life of the test button.

In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of utility model.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

Embodiment is not construed as limitations of the present invention, but changes made by any spirit based on the utility model Into should all be within the protection scope of the utility model.

Claims (7)

1. a kind of test button device for electric arc alarm circuit breaker, it is characterised in that: it includes constituting axial slide with shell The test button of cooperation is moved, the test button bottom is equipped with reed, and the reed includes movable end and fixing end, the fixation End is fixed in the shell, and the movable end can be by test button press and test contact, the fixing end one Side, which is equipped with, constitutes the touch spring being linked with operating mechanism, and one end of the touch spring is connect with tripping coil, described When the other end of touch spring is with the breaker closing and first position of the fixation end in contact of reed and breaker open operation not With the second position of the fixation end in contact of reed.

2. a kind of test button device for electric arc alarm circuit breaker according to claim 1, it is characterised in that: described There are angles between the movable end and fixing end of reed.

3. a kind of test button device for electric arc alarm circuit breaker according to claim 2, it is characterised in that: described Shell is equipped with card slot, and the fixing end of the reed is embedded in the card slot.

4. a kind of test button device for electric arc alarm circuit breaker according to claim 2, it is characterised in that: described Extend vertically to form a L-type structure on rear side of fixing end, one end of the touch spring be located at the L-type structure and fixing end it Between, and the touch spring has the on state touched when operating mechanism combined floodgate with L-type structure and in operating mechanism separating brake The off-state that Shi Buyu L-type structure is touched.

5. a kind of test button device for electric arc alarm circuit breaker according to claim 1 or 2 or 3 or 4, feature Be: the movable end bends downward to form contact jaw.

6. a kind of test button device for electric arc alarm circuit breaker according to claim 5, it is characterised in that: described Movable end forms line department close to fixing end side.

7. a kind of test button device for electric arc alarm circuit breaker according to claim 1, it is characterised in that: described The two sides of test button are formed there through sliding slot, and constitute axial sliding with the limited post on shell and cooperate.