CN202513095U

CN202513095U - Energy saving ac contactor

Info

Publication number: CN202513095U
Application number: CN2012201026857U
Authority: CN
Inventors: 许钦磊; 马明
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-19
Filing date: 2012-03-19
Publication date: 2012-10-31
Anticipated expiration: 2022-03-19

Abstract

The utility model relates to an energy saving AC contactor, relating to a power supply switch. The energy saving AC contactor comprises a static iron core, an electromagnetic coil, a reset spring and a movable iron core, wherein the shape of the lower end face of the movable iron core is same as that of the upper end face of the static iron core. The energy saving AC contactor is characterized by comprising a permanent magnet which is fixedly arranged on the lower end face of the movable iron core, and the shape of the lower end face of the permanent magnet is same as that of the upper end face of the static iron core. The energy saving AC contactor of the utility model guarantees that the AC contactor does not need electric energy to maintain during the whole circuit work process, and the permanent magnet is not easy to demagnetize; the reliability of the energy saving AC contactor is higher, so that the AC contactor switch failure caused by a circuit fault is avoided.

Description

Energy saving ac contactor

Technical field

The utility model relates to a kind of mains switch, particularly relates to a kind of A.C. contactor.

Background technology

A.C. contactor is to be widely used as cut-offfing and control circuit of electric power, and is as shown in Figure 1, and traditional A.C. contactor internal structure comprises static iron core 01; Solenoid 02, back-moving spring 03, moving iron core 04; Static iron core 01 is positioned at the A.C. contactor bottom, fixedly is wound with solenoid 02 on the static iron core 01, the top, upper surface of static iron core 01; Be provided with moving iron core 04, the lower surface shape of moving iron core 04 is identical with the upper surface shape of static iron core 01.Be provided with back-moving spring 03 between static iron core 01 and the moving iron core 04, the lower end of back-moving spring 03 connects static iron core 01, and the upper end of back-moving spring 03 connects moving

iron core

04, and 03 pair of moving iron core 04 of back-moving spring is played a supporting role.The housing top of A.C. contactor is fixedly connected with fixed contact 05, and the upper surface of moving iron core 04 is fixedly connected with moving contact 06 through contact holder 07, and contact holder 07 can be done the slip of vertical direction along the fixture in the housing.

In use, press start key, the solenoid 02 in the A.C. contactor gets electric generation magnetic field; Make static iron core 01 produce suction, attract moving iron core 04 to move down, electromagnetic attraction overcomes the elastic force of back-moving spring 03; Make the upper surface of static iron core 01 and the lower surface adhesive of moving iron core 04; Moving iron core 04 drives moving contact 06 and moves downward, and makes moving contact 06 be connected with fixed contact 05, connects subsequent conditioning circuit.In the circuit working process, need the solenoid of A.C. contactor to switch on always and continue to produce the elastic force that electromagnetic attraction overcomes back-moving spring 03, need continuous consumed power.

The utility model content

The purpose of the utility model provides a kind of energy saving ac contactor, solves to keep the technical problem that static iron core and moving iron core adhesive need continue consumed power.

The energy saving ac contactor of the utility model comprises static iron core, solenoid, back-moving spring and moving iron core; The lower surface shape of moving iron core is identical with the upper surface shape of static iron core; Wherein: comprise permanent magnetic iron block; Permanent magnetic iron block is fixedly mounted on the lower surface of moving iron core, and the lower surface shape of permanent magnetic iron block is identical with the shape of the upper surface of static iron core.

The upper surface of said static iron core be two parallel and be in the rectangle end face of same horizontal plane, two corresponding rectangle permanent magnetic iron blocks of shape of fixed installation on the lower surface of said moving iron core, the pole orientation of two permanent magnetic iron blocks is identical.

The utility model energy saving ac contactor; Utilize permanent magnet not need electric current to keep the characteristic in its magnetic field, keep magnetic field suction, produce the identical or opposite moment repulsion or suction of relative permanent magnet field direction through solenoid; Overcome the elastic force of back-moving spring; The realization static iron core separates and adhesive with moving iron core, and entire circuit course of work A.C. contactor does not need electric energy to keep, and permanent magnet is difficult for demagnetization; The reliability of the utility model is higher, has avoided causing the A.C. contactor switch failure because of fault.

Embodiment to the utility model is described further below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the structural representation of the usual A.C. contactor that uses;

Fig. 2 is the structural representation of the utility model energy saving ac contactor.

Embodiment

As shown in Figure 2, in the present embodiment, at the lower surface of moving iron core 04 fixed installation permanent magnetic iron block 08, the shape of the lower surface of permanent magnetic iron block 08 is identical with the shape of the upper surface of static iron core 01.

Initial condition in use, the magnetic attraction of permanent magnetic iron block 08 is not enough to overcome the elastic force of back-moving spring 03, makes the upper surface adhesive of permanent magnetic iron block 08 and static iron core 01.

After pressing start key; Solenoid 02 moment acquisition reverse current in the A.C. contactor produces magnetic field; The pole orientation that magnetic field produces is opposite with the pole orientation of permanent magnetic iron block 08, and there is a natural attraction between the sexes for magnetic pole, the magnetic attraction stack that magnetic attraction that static iron core 01 produces and permanent magnetic iron block 08 produce; Overcome the elastic force of back-moving spring 03, make the lower surface of permanent magnetic iron block 08 and the upper surface adhesive of static iron core 01; Solenoid 02 dead electricity of this moment does not produce magnetic field; When the lower surface of permanent magnetic iron block 08 contacts with the upper surface of static iron core 01; The magnetic attraction of permanent magnetic iron block 08 can overcome the elastic force of back-moving spring 03, keeps the lower surface of permanent magnetic iron block 08 and the upper surface adhesive of static iron core 01.

After pressing break key, the solenoid 02 moment acquisition forward current in the A.C. contactor produces magnetic field, and the pole orientation that magnetic field produces is identical with the pole orientation of permanent magnetic iron block 08; The magnetic pole same sex is repelled each other; The magnetic attraction that magnetic attraction that static iron core 01 produces and permanent magnetic iron block 08 produce is offset, and can't overcome the elastic force of back-moving spring 03, and back-moving spring 03 will move iron core 04 and back down; Reply initial condition, solenoid 02 dead electricity of this moment does not produce magnetic field.The energy saving ac contactor of present embodiment only needs electric energy when conducting and disconnection, avoided in use losing efficacy because of losing the electric energy A.C. contactor.

For the upper surface of static iron core 01 be two parallel, and be in the rectangle end face of same horizontal plane, the strip-shaped permanent-magnet iron block of two correspondences of fixed installation on the lower surface of moving iron core 04, the pole orientation of two permanent magnetic iron blocks is identical.

Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technical scheme of the utility model all should fall in the definite protection range of the utility model claims.

Claims

1. energy saving ac contactor; Comprise static iron core (01), solenoid (02), back-moving spring (03) and moving iron core (04); The lower surface shape of moving iron core (04) is identical with the upper surface shape of static iron core (01), and it is characterized in that: comprise permanent magnetic iron block (08), permanent magnetic iron block (08) is fixedly mounted on the lower surface of moving iron core (04); The lower surface shape of permanent magnetic iron block (08) is identical with the shape of the upper surface of static iron core (01).

2. energy saving ac contactor according to claim 1; The upper surface of said static iron core (01) be two parallel and be in the rectangle end face of same horizontal plane; Fixed installation two corresponding rectangle permanent magnetic iron blocks of shape (08) on the lower surface of said moving iron core (04), the pole orientation of two permanent magnetic iron blocks (08) is identical.