CN201611636U

CN201611636U - Closed magnetic keeping contactor

Info

Publication number: CN201611636U
Application number: CN2010200550189U
Authority: CN
Inventors: 郑绍信; 宿云辉; 邹明; 彭体康; 雒锋锋; 瓦磊; 王文平
Original assignee: QUNYING RADIO EQUIPMENT FACTORY CHINA ZHENHUA GROUP
Current assignee: Guizhou Zhenhua Qunying Electrical Appliances Co.,Ltd.
Priority date: 2010-01-14
Filing date: 2010-01-14
Publication date: 2010-10-20
Anticipated expiration: 2020-01-14

Abstract

The utility model relates to a closed magnetic keeping contactor, which belongs to the field of magnetic keeping contactors. A lower iron core (1) is riveted in a corresponding circular hole of a yoke (2), a coil (4) is arranged in a protective cover (3), a steel magnet (5) is arranged in a rectangular groove of the protective cover, then the protective cover is arranged in the yoke (2), an armature part (6) is arranged in the middle of the coil, a magnetic conductor riveted with an upper iron core (7) and the yoke are riveted together, a mounting rack (17), a base part (8), an insulating sleeve (15), a contact bridge part (16), an insulating washer (14), a U-shaped washer (11), a compression spring (13) and a cotter pin (12) are sequentially arranged, and a cover casing (10) equipped with a micro-switch (9) is finally arranged. The closed magnetic keeping contactor has high energy conservation and long service life, and is free from electric wave interferences; and an auxiliary contact point adopts the way of mounting the micro-switch, and the cover casing is designed to close electric arc without leakage, thereby avoiding the short circuit with the coil and the short circuit with peripheral equipment and being applicable to program-controlled switch power supply and uninterrupted power supply systems.

Description

Closed magnetic latching contactor

Technical field: the utility model relates to magnetic latching contactor, particularly a kind of closed magnetic latching contactor.

Background technology: the restoring means that traditional contactor adopts is generally the spring method of release control, this design assembling is complicated, and in the product use, because spring is subjected to mechanical stress and Temperature Influence for a long time, be easy to generate permanent deformation, influence the serviceability and the life-span of product.

Traditional contactor must apply coil power for a long time in when work, and use cost can not effectively be controlled, and the electric energy of coil consumption converts heat energy to, has quickened the aging of material, the operate as normal of electronic component around the influence.

The contact pressure of tradition contactor is owing to be subjected to the influence of coil voltage fluctuation, and pressure is non-constant, and in use contact has flutter phenomenon, and the contact spread of voltage is easy to generate contact and burns sticking phenomenon.

The mode that the auxiliary contact of tradition contactor adopt processing zero, parts to assemble, process complexity, consistency are difficult to guarantee that functional reliability is lower.

At present, the contact of magnetic latching contactor on the market normally is open in the environment for use, reduces because of environmental pollution makes the life-span of contact switch load easily, because electric arc is not sealed easy and surrounding devices short circuit.

Summary of the invention: the purpose of this utility model is to solve the weak point of traditional contactor design, provide a class voltage system 24Vd.c., 27Vd.c. and 48Vd.c., the closed magnetic latching contactor of simple in structure, superior, the reliable in action of contact nominal load 100A, 200A, 400A.

Formation of the present utility model: by unshakable in one's determination down, yoke, protective cover, coil, magnet steel, the armature part, upper iron core, sensitive switch, case, the U-shaped packing ring, split pin, stage clip, insulating washer, insulating case, contact bridge part and installing rack are formed, to descend riveting unshakable in one's determination in the yoke corresponding circle hole, with the coil protective cover of packing into, in the rectangular channel of protective cover, adorn magnet steel, the yoke of packing into then, in the middle armature part of packing into of coil, there are the magnetic conductor of upper iron core and yoke to be riveted together riveting, load onto installing rack more successively, base part, insulating case, the contact bridge part, insulating washer, the U-shaped packing ring, stage clip, the case that sensitive switch has been housed is loaded onto in split pin at last.

Compare with the designing technique of traditional contactor, the utlity model has following characteristics:

1. closed magnetic latching contactor adopts the electromagnetism adhesive, the principle that permanent magnetism keeps, the opening and closing state of magnetic latching contactor contact is that the magnetic force that is produced by permanent magnetic steel is kept at ordinary times, wants to change its contact state, and (100～300ms) pulse-triggered gets final product only to need to apply certain width to coil.

2. high energy-conservation: as to compare with traditional electromagnetic contactor, the power consumption of magnetic latching contactor coil will descend greatly, each action only need provide the pulse of 100～300ms, do not need to provide for a long time coil power dissipation in the work, coil generates heat hardly, can not produce coil temperature rise, not consumed power, be embodied as national power saving, for enterprise saves money.

3. long-life: coil can be because of heating burnout, and the insulation property of coiler part and function can not descend with the increase of service time; The suction of permanent magnet is generally bigger, and contact divides sum velocity fast, and burning time is of short duration, and the ablation amount of contact is less, long service life.And do not have chatter during the contact contact, even if contact adhesive under critical voltage also is by permanent magnet the armature part once to be drawn onto the position, contact can not prolong its useful life and strengthen reliability because of chatter produces electric arc.

4. be not subjected to wave interference: adopt permanent magnet (SmCo magnet steel) to keep, the contact contact pressure is constant, and in use contact does not have flutter phenomenon, and contact voltage is stable, is difficult for producing contact and burns sticking phenomenon.

5. auxiliary contact adopt to be installed the mode of sensitive switch, and sensitive switch inside is the auxiliary contact pattern that needs, by with the armature part in push rod contact or leave the state that switches auxiliary contact.

6. adopt the insulating material with arc resistant and high-temperature resistant to produce case, the case design is airtight and do not lose out with electric arc, can generation and coil short and surrounding devices short circuit.

The beneficial effects of the utility model are: simple in structure, and superior performance, reliability height.

Description of drawings: Fig. 1 is the utility model structural representation; Fig. 2 is circuit theory diagrams.

1. times iron cores, 2. yoke, 3. protective cover, 4. coil, 5. magnet steel, 6. armature part in the drawings, 7. upper iron core, 8. base part, 9. sensitive switch, 10. case, 11.U shape packing ring, 12. split pins, 13. stage clip, 14. insulating washers, 15. insulating cases, 16. contact bridge parts, 17. installing racks.

Embodiment: as shown in Figure 1, to descend 1 riveting unshakable in one's determination in yoke 2 corresponding circle holes, with coil 4 protective cover 3 of packing into, dress magnet steel 5 in the rectangular channel of protective cover, the yoke of packing into then, in the middle armature part 6 of packing into of coil, there are the magnetic conductor of upper iron core 7 and yoke to be riveted together riveting, load onto installing rack 17, base part 8, insulating case 15, contact bridge part 16, insulating washer 14, U-shaped packing ring 11, stage clip 13, split pin 12 more successively, load onto the case 10 that sensitive switch 9 has been housed at last.

As shown in Figure 2, the initial condition of product is the involution state, and promptly main contact is a normally off, and the NC termination of auxiliary contact is logical, and when adding pulse voltage by as shown in the figure coil polarity, product is failure to actuate, and the state of contact can not change; When the opposite polarity pulse voltage of coil that applies as shown in the figure, the contact state of product changes, and promptly main contact is a normally open, and the NO termination of auxiliary contact is logical.

Claims

1. closed magnetic latching contactor, by unshakable in one's determination down, yoke, protective cover, coil, magnet steel, the armature part, upper iron core, sensitive switch, case, the U-shaped packing ring, split pin, stage clip, insulating washer, insulating case, contact bridge part and installing rack are formed, it is characterized in that: will descend iron core (1) riveting in yoke (2) corresponding circle hole, with coil (4) protective cover (3) of packing into, in the rectangular channel of protective cover, adorn magnet steel (5), the yoke (2) of packing into then, in the middle armature part (6) of packing into of coil, there are the magnetic conductor and the yoke of upper iron core (7) to be riveted together riveting, load onto installing rack (17) more successively, base part (8), insulating case (15), contact bridge part (16), insulating washer (14), U-shaped packing ring (11), stage clip (13), the case (10) that sensitive switch (9) have been housed is loaded onto in split pin (12) at last.