CN2428859Y

CN2428859Y - Permanent-magnet sliding type micro power-consumption ac. contactor

Info

Publication number: CN2428859Y
Application number: CN 00238369
Authority: CN
Inventors: 孙凤广
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-04
Filing date: 2000-07-04
Publication date: 2001-05-02
Anticipated expiration: 2010-07-04

Abstract

The utility model relates to a permanent-magnet sliding type micro power-consumption ac contactor, which belongs to the field of an electric operating device. The permanent-magnet sliding type micro power-consumption ac contactor is provided with a basic structure of a common contactor. The utility model is characterized in that a fixed iron core (3) is arranged in the center of a coil (1); a linking frame (7) is in a closed ring shape; corresponding to an upper end surface and a lower end surface of the fixed iron core (3), an upper and a lower transverse beams (8), (9) and the internal side of the linking frame are respectively embedded with a reinforced permanent magnet (10); magnetic poles of the linking frame close to the upper and the lower end surfaces of the fixed iron core (3) have the same polarity, and the internal part of a loop of the coil (1) is provided with a control circuit. The permanent-magnet sliding type micro power-consumption ac contactor has beneficial points that after electricity of an upper line is stopped, the permanent-magnet sliding type micro power-consumption ac contactor can automatically release; the permanent-magnet sliding type micro power-consumption ac contactor has the advantages of simple structure, easy fabrication, strong reliability, micro power consumption, strong replacing property with old products, and great saving of large numbers of silicon steel laminated sheets.

Description

The little power consumption A.C. contactor of a kind of permanent-magnet push-pull

The utility model belongs to electrical operation device field, relates to the little power consumption A.C. contactor of a kind of permanent-magnet push-pull.

In the prior art, have heavy current to pass through in the coil of operating A.C. contactor all the time, therefore, useless power consumption in service is big, and coil easily burns, and electromagnetic noise is big, vibration is big, and easily causes pitting of contact, the failure rate height.For this reason, the insider has adopted many ways to transform, and mapped structure also cooperates dedicated control circuit, magneto is wherein arranged, as Chinese patent: ZL962389390, ZL982144564, though economize on electricity significantly, but structure is unreasonable, and reliability is difficult for ensureing that the circuit that has is complicated.

The purpose of this utility model is, provide a kind of permanent-magnet push-pull little power consumption A.C. contactor, can overcome above-mentioned deficiency, cooperate with the static iron core of hub of a spool by the permanent magnet on the interlock frame medial surface, be aided with dedicated control circuit, utilize that the magnetic pole same sex is repelled each other, principle of opposite sex attraction, make A.C. contactor adhesive or release; Simple in structure, easy manufacturing, good reliability, little power consumption, strong because main body and syndeton variation are little with the old product replaceability, can save a large amount of silicon steel laminations.

Concrete scheme of the present utility model is as follows:

The little power consumption A.C. contactor of a kind of permanent-magnet push-pull.Have coil 1, bobbin 2, static iron core 3, moving contact 4, fixed contact 5, outer casing frame 6, interlock frame 7 and corresponding binding post, it is characterized in that: static iron core 3 is positioned at the center of coil 1, interlock frame 7 is closed-loop type, have entablature 8 and sill 9, two beam medial surfaces are inlayed respectively one of powerful permanent magnet 10 respectively to the upper/lower terminal face of static iron core 3, and its magnetic pole near the upper/lower terminal face of static iron core 3 is an identical polar, is all the N utmost point or the S utmost point; Be connected to the control circuit that operation board piece 11 and electronic module 12 are formed in the loop of coil 1.

Usefulness of the present utility model is: cooperate with the static iron core 3 at coil 1 center by the permanent magnet 10 on interlock frame 7 medial surfaces, be aided with dedicated control circuit.Utilize that the magnetic pole same sex is repelled each other, principle of opposite sex attraction, make A.C. contactor adhesive or release; Reach the standard grade have a power failure after, can the automatic disconnection control circuit, A.C. contactor discharges automatically; Simple in structure, easy manufacturing, good reliability, little power consumption, strong because main body and syndeton variation are little with the old product replaceability, can save a large amount of silicon steel laminations.

Accompanying drawing 1, general structure principle schematic;

Accompanying drawing 2, control circuit figure;

Embodiment: further auspiciously in conjunction with the accompanying drawings add explanation.Example: A, N (B) are phase line, QA start button, TA stop button, CJ ₁Often open auxiliary contact, D _1-5Be IN series diode, V _sControllable silicon, R _1-2Resistance, C _1-2Electrochemical capacitor,

Coil 1, K-K ' change over switch.

Interlock frame 7 has the magnetic conductive loop type structure of being made up of permeability magnetic material.

The circuit diagram of operation board piece 11 and electronic module 12 is as follows:

As shown in Figure 2: A phase line successively connect in regular turn TA, QA, D ₁And C ₁An end of wiring circle 1 has simultaneously and often opens auxiliary contact CJ afterwards ₁In parallel with QA; The other end of N (B) phase line wiring circle 1; QA and D ₁Common junction meet D ₂And the R that successively connects ₁And C ₂After connect N (B) phase line; D ₁With C ₁Common junction and N (B) phase line between and be connected with D ₄, V _sAnd the D that connecting ₃R ₂, V _sAnode a meet D ₁With C ₁Common junction, negative electrode c connects N (B) phase line, control utmost point g meets D simultaneously ₃With R ₂Common junction and C ₂With R ₁Common junction;

Change over switch K-K ' also is housed, its normally closed utmost point K and C in the circuit ₁Parallel connection, it often opens utmost point K ' series connection D ₅Afterwards, in parallel with coil 1.

Claims

1, the little power consumption A.C. contactor of a kind of permanent-magnet push-pull, has coil (1), bobbin (2), static iron core (3), moving contact (4), fixed contact (5), outer casing frame (6), interlock frame (7) and corresponding binding post, it is characterized in that: static iron core (3) is positioned at the center of coil (1), interlock frame (7) is closed-loop type, have entablature (8) and sill (9), two beam medial surfaces are on the static iron core (3), following both ends of the surface are inlayed each one of powerful permanent body (10) respectively, and it is near on the static iron core (3), the magnetic pole of following both ends of the surface is an identical polar, is all the N utmost point or the S utmost point; Be connected to the control circuit that operation board piece (11) and electronic module (12) are formed in the loop of coil (1).

2, the little power consumption A.C. contactor of a kind of permanent-magnet push-pull according to claim 1 is characterized in that: interlock frame (7) has the magnetic conductive loop type structure of being made up of permeability magnetic material.

3, the little power consumption A.C. contactor of a kind of permanent-magnet push-pull according to claim 1 and 2 is characterized in that: the circuit of operation board piece (11) and electronic module (12) is composed as follows: A phase line successively connect in regular turn TA, QA, D ₁And C ₁An end of wiring circle (1) has simultaneously and often opens auxiliary contact CJ afterwards ₁In parallel with QA; The other end of N (B) phase line wiring circle (1), QA and D ₁Common junction meet D ₂And the R that successively connects ₁And C ₂After connect N (B) phase line; D ₁With C ₁Common junction and N (B) phase line between and be connected with D ₄, V _sAnd the D that connecting ₃R ₂, V _sAnode a meet D ₁With C ₁Common junction, negative electrode c connects N (B) phase line, control utmost point g meets D simultaneously ₃With R ₂Common junction and C ₂With R ₁Common junction;

4, the little power consumption A.C. contactor of a kind of permanent-magnet push-pull according to claim 3 is characterized in that: change over switch K-K ' also is housed, its normally closed utmost point K and C in the circuit ₁Parallel connection, it often opens utmost point K ' series connection D ₅After, in parallel with coil (1).