CN201514900U

CN201514900U - Alternating current contactor

Info

Publication number: CN201514900U
Application number: CN2009201980069U
Authority: CN
Inventors: 金杰; 汪审浩; 顾国元
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2009-09-29
Filing date: 2009-09-29
Publication date: 2010-06-23
Anticipated expiration: 2019-09-29

Abstract

The utility model relates to an alternating current contactor comprising a bakelite frame which can be arranged on a middle guide column in a sliding manner; an armature is connected on the bakelite frame, an iron core of a short circuit ring is arranged along the motion direction of the armature, and an electromagnetic coil is wound on the outside of the iron core; when the electromagnetic coil is powered on, the bakelite frame moves to the second position from the first position; a moving contact of a normally open contact is connected on the bakelite frame, when the bakelite frame is moved to the second position, the moving contact is in contact with a fixed contact of the normally open contact, the contact surfaces of the moving contact and the fixed contact are slopes; and the moving contact of a normally closed contact is fixed on the bakelite frame, and the first position and the second position of the bakelite frame are in contact with the fixed contact of the normally closed contact. The alternating current contactor has the advantages of high efficiency, good stability, easy replacement and low cost.

Description

A.C. contactor

Technical field

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

Background technology

At present, just adhesive simply, separation between the contact of existing A.C. contactor, contact types adopts bridge-type double break point or refers to the formula single-break, its reliability is not enough, and the silver contact heating power easily produces gummed power, " contact tripping " phenomenon can take place again in contact, and the equipment breakdown that is caused by the sporadic accident of controlled AC contactor also has generation by chance.Therefore, a lot of manufacturing enterprises wish to have the A.C. contactor of new construction to replace old combination of the sort of contact and separate mode.But at present domestic and international research mainly concentrates on the control load electric current, seldom the structure of the contact of contactor itself is made change.

Summary of the invention

The utility model will solve " contact tripping " phenomenon of existing A.C. contactor, and a kind of A.C. contactor that adopts the tangential separation technology is provided.

The technical solution of the utility model:

A.C. contactor is characterized in that: comprise a bakelite framework that is slidably disposed on the middle guide pillar; Armature is connected on the bakelite framework, is provided with the iron core of short-circuited conducting sleeve along the direction of motion of described armature, and described iron core is around with solenoid; When described solenoid was switched on, described bakelite framework moved to the second place from primary importance;

The moving contact of normally opened contact is connected on the bakelite framework, the fixed contact of described moving contact contact normally opened contact when described bakelite framework moves to the second place, and the contact-making surface of described moving contact and fixed contact is the inclined-plane; The moving contact of described normally-closed contact is fixed on the bakelite framework, all contacts with the fixed contact of normally-closed contact with the second place in the primary importance of described bakelite framework.

Further, when described bakelite framework moved to the second place, the moving contact of described normally opened contact was positioned between a fixed contact and the insulator.

Further, described armature is slidably disposed on the guide rod, is connected with back-moving spring on the described armature.

Further, the moving contact of described normally opened contact is connected on the bakelite framework by the contact stage clip.

Further, the thickness of the fixed contact working portion of described normally opened contact approximately is half of sound contact gap.

Further, described bakelite framework is when primary importance, and there is the limiting plate of a L type described armature top.

Operation principle of the present utility model:

During coil electricity, armature moves downward, and it is downward to drive the bakelite framework, thereby moving contact is moved downward, and the side of the sound contact of normally opened contact contacts with each other energising, and the sound contact of normally-closed contact is separated from each other outage.

Advantage of the present utility model: the tangential separation technology is adopted in the contact, has improved the ability that the anticol of contactor is made a concerted effort, and " contact tripping " phenomenon that has produced when having avoided the contact energising has improved the stability of A.C. contactor; And the efficient height, good stability is easy to change, and cost is low.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the profile of the utility model along the A-A line of Fig. 1.

Embodiment

With reference to Fig. 1, Fig. 2, A.C. contactor comprises a bakelite framework 10 that is slidably disposed on the middle guide pillar 7; Armature 11 is connected on the bakelite framework 10, is provided with the iron core 1 of short-circuited conducting sleeve along the direction of motion of described armature 11, and described iron core 1 is around with solenoid 2; When 2 energisings of described solenoid, described bakelite framework 10 moves to the second place from primary importance;

The moving contact 62 of normally opened contact is connected on the bakelite framework 10, the fixed contact 61 of described moving contact 62 contact normally opened contacts when described bakelite framework 10 moves to the second place, and described moving contact 62 is inclined-planes with the contact-making surface of fixed contact 61; The moving contact 82 of described normally-closed contact is fixed on the bakelite framework, all contacts with the fixed contact of normally-closed contact with the second place in the primary importance of described bakelite framework.

When described bakelite framework 10 moved to the second place, the moving contact 62 of described normally opened contact was positioned between a fixed contact 61 and the insulator 12.

Described armature 11 is slidably disposed on the guide rod 3, is connected with back-moving spring 4 on the described armature 11.

The moving contact 62 of described normally opened contact is connected on the bakelite framework 10 by contact stage clip 9.

The thickness of fixed contact 61 working portions of described normally opened contact approximately is half of sound contact gap.

Described bakelite framework 10 is when primary importance, and there is the limiting plate 5 of a L type described armature 11 tops.

During solenoid 2 energisings, armature 11 moves downward, and it is downward to drive bakelite framework 10, thereby moving contact is moved downward, and the side of the sound contact of normally opened contact contacts with each other energising, and the sound contact of normally-closed contact is separated from each other outage.

The described content of this specification embodiment only is enumerating the way of realization of utility model design; protection range of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection range of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.

Claims

1. A.C. contactor is characterized in that: comprise a bakelite framework that is slidably disposed on the middle guide pillar; Armature is connected on the bakelite framework, is provided with the iron core of short-circuited conducting sleeve along the direction of motion of described armature, and described iron core is around with solenoid; When described solenoid was switched on, described bakelite framework moved to the second place from primary importance;

2. A.C. contactor according to claim 1 is characterized in that: when described bakelite framework moved to the second place, the moving contact of described normally opened contact was positioned between a fixed contact and the insulator.

3. A.C. contactor according to claim 1 and 2 is characterized in that: described armature is slidably disposed on the guide rod, is connected with back-moving spring on the described armature.

4. A.C. contactor according to claim 3 is characterized in that: the moving contact of described normally opened contact is connected on the bakelite framework by the contact stage clip.

5. A.C. contactor according to claim 4 is characterized in that: the thickness of the fixed contact working portion of described normally opened contact approximately is half of sound contact gap.

6. A.C. contactor according to claim 5 is characterized in that: described bakelite framework is when primary importance, and there is the limiting plate of a L type described armature top.