CN205159131U - Can automatic power off switch when having a power failure - Google Patents

Abstract

The utility model provides a can automatic power off switch when having a power failure, characterized by: spring direct action has support column, electromagnetism post, wire column and draws the post on the button in the shell, around there being the coil, wire column outsourcing insulating plastic includes bar -shaped little iron core on the electromagnetism post, and it also is outsourcing insulating plastic to draw the post, includes bar -shaped little iron core, and it has on the post umbo to construct for conductor and contact piece link to each other to draw, and can move about, the contact piece with draw the post and also have little spring assembly, contact piece and button contact one side are insulating plastic in addition, the another side is the little steel sheet that electrically conducts. The utility model discloses a characteristics are that circuit structure is simple, easy to maintain, and low in manufacturing cost, long service life can reduce on using and close the switch, equipment and the personnel's risk brought because of having a power failure and forgetting.

Description

One can automatic power-off switch when having a power failure

Technical field

The utility model relates to a kind of applicable needs and prevents automatic unlatching electrical appliance use of sending a telegram here, the switch of energy auto-breaking when having a power failure.

Background technology

Industry or family's power-off for some reason, after maintenance or because of other reasons send a telegram here time, all electrical appliances of not closing often once all are opened, and cause, because immediate current is excessive, easily leaving potential safety hazard.If use the switch of this novel practical, when circuit is sent a telegram here, electrical appliance is in its unaccessed state, realize lower automatic circuit break function, and state when not pressing is got back to by switch, is easy to operator and judges.

Summary of the invention

The technology that this novel practical switch adopts is that have support column, electromagnetism post, wire column and extraction post in switch housing, when not being energized, button supports at support column, and button one end under the action of the spring, the other end is tilted, thus contact chip does not contact with wire column.After pressing the button, button one end pressure contact chip, when contact chip contacts with wire column, electromagnetism post holds button, forces contact chip to contact with wire column, during power-off, fail to hold button because electromagnetism post is not energized, make button get back to origin-location, thus wire column and contact chip are disconnected, circuit access failure, electrical appliance quits work.

Feature of the present utility model is that circuit structure is simple, is easy to safeguard, low cost of manufacture, long service life, use can reduce because having a power failure and forgetting closing switch, the equipment brought and personnel risk.

Accompanying drawing explanation

Fig. 1 is vertical view of the present utility model

Fig. 2 is front view of the present utility model

Fig. 3 is front view partial enlarged drawing of the present utility model

Fig. 4 is circuit diagram of the present utility model

In figure: 1. panel; 2. button; 3. contact chip; 4. little spring; 5. contact point; 6. draw post; 7. wire column; 8. electromagnetism post; 9. support column; 10. base in shell; 11. button spring; 12. contact chips and contact point; On 13. electromagnetism posts around coil; 14. voltage drop elements; 15. electrical appliances

Embodiment

In FIG, switch panel (1) has shift knob (2) above.

In fig. 2, in shell, base is connected with button spring, also has support column, electromagnetism post, wire column and extraction post; Electromagnetism post is wound with coil, wire column outsourcing ambroin, includes bar-shaped little iron core, drawing post is also outsourcing ambroin, includes bar-shaped little iron core, draws on post and has male structure to be that conductor is connected with contact chip, and can be movable, contact chip also has little spring device with extraction post.This out-connecting contact and button contacts one side are ambroin, and another side is the little steel disc of conduction.

When a button is depressed, contact chip contacts with wire column, and electromagnetism cornice electricity holds button, and during power failure, the not charged relieving button of electromagnetism post, contact chip is separated with wire column, circuit access failure.During incoming call, can not hold button, therefore contact chip is separated because electromagnetism post is not charged with wire column, circuit disconnects.When needing closing switch, press switch, button separates with electromagnetism post under manpower effect, and due to the effect of button spring, does not contact with contact chip, therefore circuit access failure.

Fig. 3 is the partial enlarged drawing of Fig. 2 contact chip position.

Fig. 4 is circuit diagram, press the button and contact chip is contacted with contact point, make circuit ON, voltage accesses electromagnetically coil after voltage drop element, electromagnetically coil strap electric induction goes out magnetic and lives button, and contact chip pushed down by button, thus overcomes button spring, make whole circuit keep on-state, electrical appliance is opened.When having a power failure, electromagnetism post is not charged can not hold button, causes contact chip to separate with contact point, i.e. (12) access failure in Fig. 4, and button remains open under the effect of button spring, and electrical appliance is closed.

Claims (1)

1. an energy automatic power-off switch when having a power failure, it is characterized in that: spring acts directly on button, support column, electromagnetism post, wire column and extraction post is had in shell, electromagnetism post is wound with coil, wire column outsourcing ambroin, include bar-shaped little iron core, drawing post is also outsourcing ambroin, include bar-shaped little iron core, drawing on post has male structure to be that conductor is connected with contact chip, and can be movable, and contact chip also has little spring device with extraction post, this out-connecting contact and button contacts one side are ambroin, and another side is the little steel disc of conduction.