CN2115581U

CN2115581U - Ac & dc contactor

Info

Publication number: CN2115581U
Application number: CN 92200472
Authority: CN
Inventors: 刘铭松
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-01
Filing date: 1992-01-01
Publication date: 1992-09-09

Abstract

The utility model relates to a miniature contactor with large power used for controlling the power supply of a three-phase motor. The miniature contactor with large power is composed of a base (1), a contactor and a cover casing (8). The front surface and the back surface of the base (1) are provided with line banks (15) provided with staged installing ends (2) (4) (21). The upper plane surface of the arc extinguishing cover (7) of the contactor is provided with an inner radiating micropore net (22). A net belt conducting connection cord (13) adopted by three groups of main contact pieces (5) and three groups of main contact bridges (6) is bridged at the upper part of a coil (11) and an upper iron core (10). The net belt conducting connection cord is horizontally and directly inserted in the hole of the staged installing end (2) of the line banks at the front surface and the back surface of the base. The utility model has the advantage of compact structure, safety is enhanced, the power consumption of the coil is lowered, energy is saved, and the service life is extended.

Description

AC & dc contactor

The utility model relates to the small-sized high-power contactor, is used for the control of threephase motor power supply.

The 522 type electromagnetic relays of selling on the China market are " bat is closed " formula structure, have only two groups of contacts, and the control ， And and the mechanical strength that can not be used for three phase mains are low, and volume is big, and power consumption is big, and usage safety performance is poor.Chinese patent CN88213534.1 has adopted five groups of contacts, be provided with arc-extinguish chamber etc., tentatively overcome the shortcoming of above-mentioned technology, but because of adopting sealing shape arc-extinguish chamber, yi word pattern line bank And be located at base around, and line bank installation head line-spacing is too close, so that heat is difficult to get rid of during large current load, and coefficient of safety is still not high, useful life is not long, and also inconvenience etc. is installed.

The purpose of this utility model is to overcome above-mentioned prior art shortcoming, provides a kind of coefficient of safety height, life-span length, easy for installation, the AC/DC contactor that the scope of application is wide.

The utility model purpose can reach by following technical measures: by base (1), contactor, case (8) is formed AC/DC contactor, contactor touches bridge (6) by three groups of masters, two groups of auxiliary bridges (18) that touch, arc-extinguish chamber (7), lower core (12), solenoid (11), extension spring (14), upper core (10), insulator support (9), guipure conduction connecting line (13), two groups of auxiliary contacts (3) up and down, three groups of master's contacts (5), form, the base of the utility model AC/DC contactor (1), two sides is provided with line bank (15) before and after it, and line bank (15) is provided with staged installation head (2) (4) (21).

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing:

Accompanying drawing 1. the utility model vertical views.

Accompanying drawing 2. the utility model front views.

Accompanying drawing 3. the utility model staged line bank front views.

Accompanying drawing 4. the utility model shell side views.

The utility model is made up of five parts, one base portion: form by base (1), line bank (15), installation head (2) (4) (21), case (8), base (1), line bank (15), installation head (2) (4) (21) three are an integral body, are provided with staged installation head (2) (4) (21) above the line bank (15), the outer both sides of case (8) have heat radiation hole pattern (17).Two, solenoid part: be made up of coil (11), last lower core (10) (12), coil rack (25), barred core is made by iron-nickel alloy.Three, touch bridge and action part: adopt five groups to touch bridge, wherein three groups is the main bridge (6) that touches, two groups are the auxiliary bridge (18) that touches, three groups of master's contacts (5), three groups of masters touch bridge (6) and adopt guipure conduction connecting line (13) across at coil (11) and above the upper core (10), flatly directly insert in installation head (2) (4) (21) hole of front and back staged line banks (15).The main bridge (6) that touches touches bridge (18) and has the different reed of length with assisting, the copper base contact alloy silver point that varies in size, two groups auxiliary touch bridge (18) divide be located at three groups of masters touch bridge (6) about two downsides, touching bridge insulator support (9) upper core (10) with the master simultaneously is connected as a single entity, assist and touch bridging wiring (19), auxiliary contact connecting line (20), assist for two groups and touch the external application joint that bridge is a contactor, three groups of masters touch bridge (6) and are used to control three phase mains, auxiliary touch one of bridge and connect push-button switch, during action, lower core (12) the adhesive upper core (10) of solenoid (11), insulator support (9) moves down thereupon, the master touches bridge and main contact joins, the three phase mains conducting, two groups of auxiliary bridges that touch break away from upward auxiliary contact, join with following auxiliary contact, form one group of self-lock switch, the auxiliary bridge that touches of another group breaks away from normally off, cut off the coil power of another contactor, threephase motor is reversed, by clockwise change when solenoid (11) cuts off the power supply, upper core (10) discharges, because the effect insulator support (9) of extension spring (14) restores to the original state, and touches bridge and resets, and finishes release movement.Four, arc-extinguish chamber device part: three groups of masters are touched bridge (6) and three groups of master's contacts (5) in the inside of arc-extinguish chamber (7) and all imbed among the passage of arc-extinguish chamber (7), form the channel-type arc-extinguish chamber, arc extinguishing around realizing is effectively isolated alternate arcing up hill and dale, has increased coefficient of safety.Five, heat abstractor part: in the last plane of arc-extinguish chamber (7) is provided with heat radiation network of micropores (22), set up four little side's ventilation holes (24) to increase the air cooling flow on the next door, four installation foot inboards of base (1), be provided with heat radiation hole pattern (17) in the outer both sides of case (8), make touch bridge, contact, solenoid all obtain the cooling, prolong useful life, improved safety and reliability.

The utility model advantage: compact conformation, improved security reliability, reduce coil power dissipation and reached energy-saving effect, prolonged service life.

Claims

1, a kind of AC/DC contactor, comprise base (1), contactor, case (8), contactor touches the auxiliary bridge (18), arc-extinguish chamber (7), upper core (10), solenoid (11), lower core (12), extension spring (14), insulator support (9), two groups of auxiliary contact (3), three groups of master's contacts (5) up and down of touching of bridge (6), two groups by three groups of masters and forms, it is characterized in that: the two sides is provided with line bank (15) before and after the base (1), and line bank (15) is provided with staged installation head (2) (4) (21).

2, according to the described AC/DC contactor of claim 1, it is characterized in that: its said base (1), front and back line bank (15), staged installation head (2) (4) (21) are an integral body.

3, according to claim 1 or 2 described AC/DC contactor, it is characterized in that: the network of micropores (22) of heat radiation in the last plane of said arc-extinguish chamber (7) is provided with.

4, according to claim 1 or 2 described AC/DC contactor, it is characterized in that: said three groups of master's contacts (5), three groups of masters touch the guipure conduction connecting line (13) that bridge (6) is adopted, across at coil (11) and above the upper core (10), before and after flatly directly inserting in the hole of the staged installation head (2) (4) (21) of line banks (15).

5, according to the described AC/DC contactor of claim 3, it is characterized in that: said three groups of master's contacts (5), three groups of masters touch guipure conduction connecting line (13) that bridge (6) adopted across at coil (11) and upper core (10) above, flatly directly insert in the hole of staged installation head (2) (4) (21) of front and back line banks (15).