CN2614378Y

CN2614378Y - Energy-saving electromagnetic switch

Info

Publication number: CN2614378Y
Application number: CN 03211780
Authority: CN
Inventors: 吴飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-07
Filing date: 2003-03-07
Publication date: 2004-05-05
Anticipated expiration: 2013-03-07

Abstract

An energy-saving electromagnetic switch belongs to the field of electrical technique and is a high-current auto-control switch of energy-saving type. The utility model comprises two permanent magnets, a coil, an iron core and a plurality of contacts. The two permanent magnets are positioned on two ends of the iron core, rendering two stable operating positions for the iron core which is driven by the electromagnetic coil to change the two basic operating positions so as to render the contacts different on-and-off operating conditions. The utility model provides an energy-saving electromagnetic switch of bi-stable magnetic latching driven by pulse.

Description

Energy-saving electromagnetic switch

Technical field

Electromagnetic switch is applied to electronic technology and automation field.

Background technology

Existing A.C. contactor or electromagnetic switch are when the operating state of adhesive, the solenoid maintenance suction of must always switching on, this electromagnetic attraction keeps the pressure on hot contact surface on the one hand, to overcome the elastic force of return spring on the other hand, for this reason, solenoid will be by enough big electric currents of keeping in the adhesive operating state, and consumed power and make coil heating produces operating noise thus.

The utility model purpose is to produce a kind of energy-saving electromagnetic switch, and it is driven by electric pulse, is only changing operating state moment power consumption.Not having return spring, is a kind of bistable switch that does not need to keep electric current simple in structure, is applicable to the various automatic control circuits in the electronic technology field.

Summary of the invention

The utility model reaches by following measure:

Energy-saving electromagnetic switch is by 2 permanent magnets, 1 coil, and 1 iron core, fixed contact, moving contact and shell are formed; It is characterized in that moving contact is fixed into one in iron core, iron core is reciprocating motion in coil, decides contact and moving contact and forms normally closed electric contact open in usual, decides the both sides that contact is positioned at moving contact, and locatees for the reciprocating motion of iron core by moving contact.Two permanent magnets are fixed on the housing, be positioned at the iron core two ends, iron core is produced the magnetic force that keeps stable state, the like pole of two permanent magnets generation repulsive force staggered relatively, middle iron core one end is by the near permanent magnet magnetization of distance, this end produces suction, and the permanent magnet that the other end is adjusted the distance far away produces repulsive force, this repulsive force is identical with the suction direction to be acted on by the moving contact on the iron core on the fixed contact of location, it is exactly the contact pressure of contact surface, change the sense of current of coil, just changed the magnetic polarity of iron core, one side of the iron core and the permanent magnet same sex is repelled, distance strengthens, and is subjected to attract distance approaching with a side of the permanent magnet opposite sex, makes iron core produce motion and keep self-locking position by permanent magnet after outage.Make contact be in different open and-shut modes.

Description of drawings

Fig. 1 energy-saving electromagnetic switch fundamental diagram

Fig. 2 energy-saving electromagnetic switch is used schematic diagram

The energy-saving electromagnetic switch fundamental diagram is as shown in Figure 1: by permanent magnet 1, decide contact 2, moving contact 3, decide contact 4, iron core 5, coil 6, permanent magnet 7 etc. form.Moving contact 3 is fixed into one with iron core 5, iron core 5 can reciprocating motion in coil 6, decide contact 2, decide contact 4 and form with moving contact 3 and often open or normally closed electric contact, decide the both sides that contact 2 and 4 is positioned at moving contact 3 for two, play positioning action for the reciprocating motion of iron core 5 by contact 3 and the position of deciding contact closure.Two permanent magnets 1 and 7 are fixed on the housing, are positioned at the two ends of iron core 5, and not under the situation of iron core 7 contacts, iron core are produced the self-locking magnetic force that keeps stable state.These two permanent magnets 1 and 7 installation sites are as shown in Figure 1, two N are extremely staggered relatively, produce repulsive force mutually, middle iron core right-hand member is shown by near permanent magnet 7 magnetization of distance S polarity makes the other end present N polarity, this end produces repulsive force to the N polarity of permanent magnet 1, iron core 5 right-hand members are attracted by permanent magnet 7, and the left end of iron core 5 is repelled by permanent magnet 1, produce the identical power of direction on iron core 5, moving contact 3 is pressed on decides on the contact 4, form the closed electric contact of stable state.When in coil 6, passing through the control impuls electric current, it is that the ultra-Right limit of S is when being the electromagnetic field of the N utmost point that generation makes iron core 5 left sides, 5 pairs of permanent magnets of iron core 7 produce repulsive force, permanent magnet 1 have been produced attraction, these two force direction unanimities, iron core 5, moving contact 3 are moved to left rapidly, moving contact 3 with decide contact 4 and separate, and decide contact 1 closure, form new normally closed electric contact, after pulse current disappeared, the suction of 1 pair of iron core 5 of permanent magnet was kept moving contact 3 and is pressed on and decides to keep self-locking on the contact 1.

Embodiment

The utility model energy-saving electromagnetic switch is used for the limited system of electric automobile equal energy source as mains switch, embodiment as shown in Figure 2, only need and decide contact 2 and insert the Be Controlled loop respectively, and the control impuls of feeding different directions for coil 6 can realize the effect of power down switch moving contact 3.

Claims

1, energy-saving electromagnetic switch, comprise: permanent magnet (1), permanent magnet (7), coil (6), iron core (5), decide contact (2), decide contact (4), moving contact (3) and shell, it is characterized in that: moving contact (3) is fixed into one with iron core (5), iron core (5) can reciprocating motion in coil (6), decide contact (2), decide contact (4) and moving contact (3) and form and often open or normally closed electric contact, permanent magnet (1), permanent magnet (7) are positioned at the magnetic force that produces moving contact (3) self-locking on the housing at iron core (5) two ends.