CN1035533C

CN1035533C - Contactor and relay

Info

Publication number: CN1035533C
Application number: CN92101271A
Authority: CN
Inventors: 刘章俭
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-02-27
Filing date: 1992-02-27
Publication date: 1997-07-30
Anticipated expiration: 2007-02-27
Also published as: CN1075819A

Abstract

The present invention designs a contactor which is composed of a control part, a self-hold part, a state switching part and a main loop contact point part. Moreover, the four parts respectively cooperate well and create a kind of intelligent operation, and thus, the purposes of the contactor are accomplished with energy saved and high efficiency. The present invention is characterized in that a spring with changeable elasticity directions is invented. The mechanical force of the spring is used for keeping the attracting state or the breaking state of the contactor so as to save standby current. The changes of the states are guided by the control part. After the states are changed, a state switch is used for switching off power. In addition, the present invention has the advantages of energy saving and low noise, and can be used for common alternating current and direct current.

Description

New-type contactor, relay

What the present invention relates to is a kind of electrical switchgear, particularly a kind of self-sustaining contactor or relay.

Present widely used electromagnetic contactor, when closure, the electromagnet power supply that needs to give contactor has consumed electric energy like this and has burnt out coil again easily to keep attracting state, produces noise.In order to eliminate these shortcomings, people have designed a lot of schemes, as improving power factor (PF); Reduce and keep electric current etc.; Wherein the state-owned clear 56-900 patent of invention of Japan is arranged significantly is to adopt the magnetic of permanent magnet to keep adhesive to assistant warden, also having No. 85100193 patents of invention of China is to utilize the remanent magnetism after iron core magnetizes to keep adhesive, these methods all do not break through the circle of old-fashioned contactor, and are not ideal enough.

The invention provides a kind of new-type electromagnetic contactor, its advanced person's design produces a kind of intelligent mode of operation, obtains important breakthrough technically, and development prospect is very huge.

Existing electromagnetic treadle all is that employing elastic force is unidirectional spring, and its elastic force is towards the direction that makes the contactor disjunction, and when adhesive, the suction that electromagnet produces just can make the contactor adhesive and keep adhesive greater than the elastic force of spring; When the power supply to electromagnet stops, electromagnetic force disappears, contactor disjunction and keep disjunction under the effect of the elastic force of spring, and my contact of invention has just broken through this pattern, and a kind of intelligent mode of operation is provided.The present invention is made up of four parts: (1) control section; (2) self-sustaining part; (3) state opens half; (4) energising major loop contact part.Its operation principle is: when adhesive of needs contactor or disjunction, the operator presses the button, control section energising (control section also can be manual) produces an electromagnetic force makes contactor adhesive or disjunction, this power only plays guiding function when state changes, in a single day guiding function is finished, promptly cut off the electricity supply by status switch, control section is power consumption no longer, is partly finished the task of keeping adhesive or disjunction by self-sustaining.This four parts good teamwork, finish separately task efficiently, reliably, simply, reach perfect degree, make contactor finish the mission that switches on and off major loop just as a simple intelligent robot, control section can be an electromagnet, linear electric motors or the electrical conductor in magnetic field etc., self-sustaining partly are the finger shape torque springs that adopts the elastic force direction to change.

Adopting the contactor of electromagnet with control section below is that example is made a concrete analysis of the work reason: adopting the advantage of electromagnet is that alternating current or direct current all can directly be used, need not to increase rectification part, control and status switch are all simpler, and Fig. 1 is wherein a kind of profile view.Fig. 1 a is the A-A cutaway view, 1. is the finger-type torque spring of elastic force direction-agile; 2. be connecting rod, connect the major loop contact 5. moving contact and status switch 6. moving bar and the break-in spring 1., 4. the other end connects iron core, 3a is the electromagnet upper coil, 3b is a lower coil, 5. is the major loop contact.Figure (2) is its control chart, K1 is a control switch, K2 is a status switch, Wa is the 3a coil windings, Wb is the 3b coil windings, when the K1 plate to adhesive, control circuit constitutes path by K1b → K2b → Wb, the contactor iron core moves downward, make the contactor closure, at this moment the elastic force of finger-type torque spring is downward, and closure state is maintained, while status switch automatic disconnection K2b, connect K2a, connect Wa during for the contactor disjunction and get ready, at this moment Ka, Wb does not have electric current to pass through, and contactor is kept attracting state by the elastic force of break-in spring.Equally, when disjunction, the K1 plate constitutes path to the K1a circuit by K1a → K2a → Wa, iron core moves upward, make the contactor disjunction, the elastic force of break-in spring changes upwards thereupon, and the disjunction state is kept, while status switch automatic disconnection K2b, connect K2a, for same Wa is got ready in adhesive once more, Wb does not have electric current to pass through, and keeps the disjunction state by elastic force.From the above mentioned, only control coil moment energising when state changes of contactor, AC/DC can be used, and the state of keeping is by torque spring elastic force, is mechanical force, and is reliable more, stable, simple.So new-type contactor energy-saving does not burn coil, noiselessness, and has broken through the Design Mode of old-fashioned contactor, can develop and more variety classes, difference in functionality kinds such as (as explosion-proof dustproof).The existing contactor of remanent magnetism that utilizes can only be used direct current, must increase by a cover rectifying device with alternating current, and it is more expensive than easy break-down and price to be used for the rectifier cell of forceful electric power, and this has just increased cost and failure rate.

The contact part of contactor also can be made fan-shaped, rotates around an axle, and figure three is wherein a kind of profile view, 1. is finger-type torsion self-sustaining spring among the figure; 2. being linear motor armature (or the electrical conductor in the magnetic field), 3. is motor stator (or produce magnetic field electromagnet), 4. winding, the moving contact of the major loop contact that 5. switches on.

A left side is for opening the torque spring profile in the finger-type angle among the figure four, right side be magnetic circuit independently go up lower coil separately 1. be coil, 2. be last magnetism guiding access, 3. be to descend magnetism guiding access.

Design principle of the present invention can also be used to produce the various types of automatically controlled and manual switch that varies in size, relay, and products such as travel switch can also be used to produce high-voltage switch gear.

Spring status switch and major loop contact part among the present invention can be made different shape according to actual conditions, put in position with reduced volume.

Claims

1, a kind of electrical switchgear, particularly a kind of self-retaining contactor, relay, the finger shape torque spring that it is characterized in that the flare up certain angle that self-sustaining mechanism employing elastic force direction can change, the motion of support drives the torque spring rotation and the conversion of generation self-sustaining pressure, and the elastic force of torque spring is in order to keep adhesive or disjunction.

2,, it is characterized in that the last lower coil of the electromagnet employing of control section has separately independently magnetic line of force magnetism guiding access by the described device of claim 1.

3, by the described device of claim 1, it is characterized in that the moving contact part can make straight-line form, also can make and sway and can self-sustaining.