CN2319915Y

CN2319915Y - Quick disconnect type contactor

Info

Publication number: CN2319915Y
Application number: CN 97241299
Authority: CN
Inventors: 向其富
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-19
Filing date: 1997-09-19
Publication date: 1999-05-19
Anticipated expiration: 2007-09-19

Abstract

A quick-break contactor comprises a base, a contact system and a magnetic system, wherein a break-repelling coil and an attraction coil sharing a pair of iron cores are arranged between an armature iron and a magnetic yoke arranged in the base, and a compression spring is arranged between the two coils. The contactor has the characteristics of high suction speed and disconnection speed, current breaking capacity, difficult adhesion of contacts, small suction power, strong fusion welding resistance and fusion welding resistance, electric wear resistance and low electric wear resistance, longer service life of the contactor and the like.

Description

Quick breakaway-element contactor

The utility model belongs to the AC and DC contactor.

" factory uses the electric equipment handbook always, the 1106-1107 page or leaf, hydraulic and electric engineering publishing house, disclose serial open type A.C. contactor, comprised contact system, magnetic system, it adopts the U-iron core of twin coil to form, its cardinal principle is to adopt the adhesive of electromagnetism magnetic force, adopts electromagnetism magnetic force to discharge, and spring support exhibition resets.It exists following shortcoming, opening speed is slow, response is slow, and the melting welding poor performance is prevented in the contact, easily makes the contact adhesion; The sticking power consumption is big; Anti-electrical wear and low electrical wear can not possess simultaneously, and contactor is not long useful life.

The purpose of this utility model provides a kind of sucting speed, opening speed is fast, the breakaway-element contactor that the electric current breaking capacity is strong, the contact is difficult for adhesion, the sticking power consumption is little, the life-span is long.

The purpose of this utility model is achieved in that a kind of breakaway-element contactor, its primary structure is, it comprises base, contact system, magnetic system, contact system comprises the movable contact bridge 11 of ship shape structure, the fixed contact 9 that is connected with base, be positioned at the auxiliary contact 10 of main contact both sides, 12, movable contact bridge 11 is connected with supporter 4, supporter 4 is fixedlyed connected with armature 6, yoke 5 is set in the base, between armature 6 and yoke 5, be arranged at and scold broken string circle 8, pull-in winding 7, their shared one secondary iron cores, pull-in winding 7 on yoke 5, armature 6 and moving contact supporter 4, scold broken string circle 8 to be fastenedly connected, scold compression spring 13 is set between broken string circle 8 and the pull-in winding 7.

Base is made up of upper bed-plate 3, middle base 2, lower bottom base 1, and auxiliary fixed contact is arranged at respectively on middle base 2, the upper bed-plate 3 and forms normally open contact, normally closed interlock, and fixed contact 9 is connected with middle base 2.

Since the utility model be provided with shared same secondary iron core pull-in winding, scold broken string circle, adopt the adhesive of electromagnetism magnetic force, disconnection, and the quality of contact supporter is certain, the stroke of motion is certain, its suffered bonding force is big more, run duration is just short more, its sucting speed, especially opening speed are all fast than original contactor, the electric current breaking capacity is strong, the contact is difficult for adhesion simultaneously, and the sticking power consumption is less, and anti-melting welding and anti-melting welding, anti-electrical wear and low electrical wear possess simultaneously, therefore contactor is longer useful life, and its performance is relatively seen Fig. 6, Fig. 7.

Below in conjunction with drawings and Examples the utility model is further described.

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

Fig. 2 is the front view of contact supporter.

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is the end view of Fig. 2.

Fig. 5 is a fundamental diagram of the present utility model.

Fig. 6 is figure time response of original contactor.

Fig. 7 schemes time response of the present utility model.

Among the figure 1, lower bottom base, 2, middle base, 3, upper bed-plate, 4, the contact supporter, 5, yoke, 6, armature, 7, pull-in winding, 8, scold broken string circle, 9, fixed contact, 10, auxiliary fixed contact, 11, movable contact bridge, 12, auxiliary movable contact bridge, 13, the compression spring, 14, bolster, 15, cushion pad, a, electricity are not inconsistent the suction-combining force, b, spring breakaway, c, contact supporter 4 stressed, d, electromagnetism are scolded disconnected power.

The utility model primary structure is: it comprises base, contact system, magnetic system, contact system comprises the movable contact bridge 11 of ship shape structure, the fixed contact 9 that is connected with base, be positioned at the auxiliary contact 10 of main contact both sides, 12, movable contact bridge 11 is connected with supporter 4, supporter 4 is fixedlyed connected with armature 6, yoke 5 is set in the base, between armature 6 and yoke 5, be arranged at and scold broken string circle 8, pull-in winding 7, their shared one secondary iron cores, pull-in winding 7 is on yoke 5, armature 6 and moving contact supporter 4, scold broken string circle 8 to be fastenedly connected, scold compression spring 13 is set between broken string circle 8 and the pull-in winding 7.Base is made up of upper bed-plate 3, middle base 2, lower bottom base 1, and auxiliary fixed contact is arranged at respectively on middle base 2, the upper bed-plate 3 and forms normally open contact, normally closed interlock, and fixed contact 9 is connected with middle base 2.

The utility model adopts open type formal dress Direct Action Type double-breakpoint structure, and the movable contact bridge 11 of contact system has higher intensity and bigger thermal capacity.Fixed contact 9 selects for use section bar to be furnished with the irony arc leading angle, makes it to have dimensionally stable, so that the characteristics that electric arc outwards moves.Contact material is selected Agcdo for use, have the higher anti-melting welding and the performance of anti-electrical wear, contact supporter 4 cooperates for being slidingly connected with lower bottom base 1, middle base 2, upper bed-plate 3, have higher level, vertical stability, higher anti-melting welding and lower electric abrasioning performance are arranged, good insulating has higher electric current breaking capacity between phase and phase.

Its operation principle is as follows: press inching button QA, pull-in winding 7 energising, electromagnetic force overcome spring 13 counter-force and rapidly with armature 6 downward adhesives, armature 6 with moving contact supporter 4, scold broken string to enclose 8 to be fastenedly connected.Therefore, major-minor moving contact makes main normally opened contact closure respectively, auxiliary normally-closed contact disjunction, auxiliary normally opened contact closure.Contactor self-insurance in the diagram circuit.

Press stop button TA or thermal relay normally opened contact closure, scold 8 energisings of broken string circle, because of repelling each other with the electromagnetic force same sex of pull-in winding 7 generations, armature 6, moving contact supporter 4 and scold broken string circle 8 under the counter-force acting in conjunction of electromagnetic repulsion force and spring 13, to move upward rapidly, main normally opened contact disconnects, and auxiliary normally opened contact disconnects, the contactor self-insurance disappears, electromagnetic repulsion force disappears, the contactor outage, and the counter-force of spring 13 continues to shift contact supporter 4 onto energising preceding initial condition.

Claims

1, a kind of quick breakaway-element contactor, it comprises base, contact system, magnetic system, contact system comprises the movable contact bridge (11) of ship shape structure, the fixed contact that is connected with base (9), be positioned at the auxiliary contact (10 of main contact both sides, 12), movable contact bridge (11) is connected with supporter (4), supporter (4) is fixedlyed connected with armature (6), yoke (5) is set in the base, it is characterized in that between armature (6) and yoke (5), being arranged at and scold broken string to enclose (8), pull-in winding (7), their shared one secondary iron cores, pull-in winding (7) is on yoke (5), armature (6) and moving contact supporter (4), scold broken string circle (8) to be fastenedly connected, scold compression spring (13) is set between broken string circle (8) and the pull-in winding (7).

2, quick breakaway-element contactor according to claim 1, it is characterized in that base is made up of upper bed-plate (3), middle base (2), lower bottom base (1), auxiliary fixed contact is arranged at middle base (2) respectively, upper bed-plate (3) is gone up and formed normally open contact, normally closed interlock, and fixed contact (9) is connected with middle base (2).