CN201038081Y

CN201038081Y - Polarized permanent-magnet vacuum AC contactor

Info

Publication number: CN201038081Y
Application number: CNU2007200117646U
Authority: CN
Inventors: 吕长顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-17
Filing date: 2007-04-17
Publication date: 2008-03-19
Anticipated expiration: 2017-04-17

Abstract

The utility model provides a polarization permanent magnet vacuum AC contactor in order to solve the technological problems that reliably maintaining a prior static without power and accurate and rapid action under the control of switch signal. The utility model comprises a magnetic driving mechanism and a valve actuator. A main body of the magnetic driving mechanism is arranged in a closed loop heel piece frame. A pull rod mechanism of a keeper is punctured out through an end surface of the heel piece frame and takes the upper and lower working line of the keeper as a center line of the pull rod mechanism driving a coil and winding a frame. A non magnetic and insulation frame is respectively provided with two magnet coils. Three permanent magnetic groups are arranged between the two coils and between the two coils and the heel piece inside end surfaces. Every permanent magnetic group is provided with two permanent magnetic with the same polarity at the relative pole of the keeper. A connection rod mechanism of the pull rod mechanism of the keeper is driven by and connected with a moving contact of a vacuum tube. The utility model has the advantages of reliable action, quick reaction, low energy consumption and long service life.

Description

Polarization permanent magnetism vacuum A.C. contactor

Technical field

The utility model relates to the control apparatus of control circuit disjunction---A.C. contactor.

Background technology

A.C. contactor mainly is made up of electromagnetic drive mechanism and switch actuator.For eliminating the arclight between switch contact, be provided with arc-extinguishing mechanism and transmission mechanism thereof in the portioned product; For avoiding between the contact, producing the arcing technical problems such as contact of burning because of contact spring, also multiple magnetic polarization mechanism and control circuit thereof have been adopted in design, as the disclosed patent No. of Chinese patent be: 00238369.1, name is called " the little power consumption A.C. contactor of a kind of permanent-magnet push-pull ", its structure is that armature is designed to closed-loop type interlock frame, the coil that is wound on the static iron core is arranged in the inner space of armature interlock frame, and two medial surfaces relative with coil polarity respectively are provided with a permanent magnet on the interlock frame.The ubiquitous technical problem of this type of prior art has: the solenoid current commutating circuit must be set, change coil polarity, realize that the commutation of armature moves, its electric current commutating circuit is comparatively complicated usually, and product cost height, functional reliability are low; In addition, the armature of release condition is in free state, when other bad signal of telecommunication appears in the solenoid controlled circuit, very easily causes misoperation, and its functional reliability is difficult to guarantee; Otherwise need electric energy to keep armature adhesive and release condition, thus the solution state is kept and electric consumption between contradiction be the technical barrier that needs to be resolved hurrily at present.

The utility model content

Goal of the invention of the present utility model be to provide a kind of finish need not electric energy can reliably be maintained at existing static, under switching signal control the action permanent magnetism vacuum A.C. contactor that accurately and rapidly polarizes.Polarization permanent magnetism vacuum A.C. contactor technical scheme disclosed in the utility model, its major technique content is: this polarization permanent magnetism vacuum A.C. contactor is made of magnetic driving mechanism and switch actuator, the main body of its magnetic driving mechanism is arranged in the closed loop yoke framework, the drag link mechanism of armature is passed by an end face of yoke framework, twine the center line of skeleton as its drive coil with working line about the armature, be respectively equipped with two solenoids on this non-magnetic conduction insulation framework, between two solenoids, two coils respectively and be provided with between the yoke inner face three the cover set of permanent magnets, each set of permanent magnets is in two permanent magnets of the relatively very same polarity setting of armature, and the moving contact interlock in linkage in the armature drag link mechanism and the vacuum tube is provided with.

The disclosed polarization permanent magnetism of the utility model vacuum A.C. contactor technical scheme, its two solenoid provides drive signal by control circuit, be responsible for to drive armature respectively and discharge operation and adhesive operation, and reliably the keeping of attracting state that is implemented under the no off-position by being provided with of last set of permanent magnets and following set of permanent magnets and release condition; And the structure setting of three groups of set of permanent magnets provides the reaction speed of armature commutation action, avoids the vacuum-tube switch contact action contact spring of moment, eliminated the action noise, and the arcing between the contact, and its power consumption is low, the operating period is long.

Description of drawings

Fig. 1 is the structural representation of this polarization permanent magnetism vacuum A.C. contactor

Fig. 2 is the circuit theory diagrams of its solenoid controlled circuit.

Embodiment

What accompanying drawing provided is polarization permanent magnetism vacuum A.C. contactor one specific embodiment structure of the present utility model, and this structure is arranged in the product shell.This polarization permanent magnetism vacuum A.C. contactor includes magnetic driving mechanism and switch actuator, the main body of magnetic driving mechanism wherein is arranged in the closed loop framework yoke 7, and the pull bar part that armature 6 is passed by the upper surface of yoke framework 7 is articulated and connected with the angular lever connecting rod 9 of switch actuator.Armature 6 is under the effect of solenoid alternating magnetic field, move following location, the non-magnetic conduction insulation framework 8 of cubic tubular in the yoke 7 is the central axis setting with the working line of armature 2, be wound in this skeleton 8 and be provided with the first solenoid L1 and the second solenoid L2, between the last inner face of the first solenoid L1 and yoke 7, two solenoid L1, between the L2, respectively be provided with a cover set of permanent magnets 5 in the skeleton space between 9 times inner faces of the second solenoid L2 and yoke, 3,1, each set of permanent magnets is by two covers, every cover lays respectively at the two opposite sides of armature 6, and the permanent magnet that same polarity is oppositely arranged, the moving contact 16 that the armature pull bar drives lever connecting rod 9 and vacuum tube 14 is articulated and connected.Two contacts of vacuum tube 14 are as the control contact switch of major loop.

Fig. 2 is the circuit principle structure of solenoid controlled circuit, it is made of first wire loop and second wire loop, the first solenoid L1 of its first wire loop is connected in the load output loop of full-wave rectification bridge P1, is provided with the contact switch of relay J 1 in its output loop; The second solenoid L2 of second wire loop is connected in the load output of its full-wave rectification bridge P2, and the major loop series connection of full-wave rectification bridge P2 is provided with the contact switch of relay J 2; Interlock is controlled by the armature pull bar double contact switch K is set, and contact e2, the e3 of contact switch is armature limes superiors bit switch contact, and connecting with relay J 2 is arranged at power end; Another of double contact switch is the switch contact of armature limit inferior position to switch e1, e4, is series at the major loop of full-wave rectification bridge P1; When first wire loop was connected, relay J 1 coil made its contacting 1. pin and 5. pin, and first solenoid L1 energising realizes that armature 6 moves on rapid; When second wire loop was connected, its relay J 2 made its contact 4. pin and 6. pin connection, impels armature 6 to move down rapidly.

The course of work of this polarization type A.C. contactor is: at first setting the first solenoid L1 is release coil, and the second solenoid L2 is a pull-in winding, and the initial condition of setting this contactor is the contact attracting state.When release coil L1 gets when electric, the electromagnetic field of its generation strengthens the magnetic flux in Free up Memory crack suddenly, moves thereby brute force forces on the armature 6, and the dialysis contact connects, and realizes that the contact discharges; In like manner, when pull-in winding L2 gets electricly, the magnetic flux of its adhesive empty gap strengthens, and the magnetic flux in Free up Memory crack is weakened greatly, and it makes a concerted effort armature 6 to impel the moving contact group to contact with the adhesive of fixed contact group to the pulling of adhesive empty gap, finishes its adhesive and operates.

Claims

1. polarization permanent magnetism vacuum A.C. contactor, it is made of magnetic driving mechanism and switch actuator, the main body that it is characterized in that its magnetic driving mechanism is arranged in the closed loop yoke framework (7), the drag link mechanism of armature (6) is passed by an end face of yoke framework, twine the center line of skeleton (8) as its drive coil with working line about the armature, be respectively equipped with first solenoid (L1) and second solenoid (L2) on this non-magnetic conduction insulation framework (8), between two solenoids, two coils respectively and be provided with between the yoke inner face three the cover set of permanent magnets (3,5,1), each set of permanent magnets is in two permanent magnets of the relatively very same polarity setting of armature, moving contact (16) the interlock setting in linkage in the armature drag link mechanism and the vacuum tube.

2. polarization permanent magnetism vacuum A.C. contactor according to claim 1, it is characterized in that being provided with the solenoid controlled circuit mutually with solenoid, this control circuit is made of first wire loop and second wire loop, first solenoid (L1) of its first wire loop is connected in the load output loop of full-wave rectification bridge (P1), is provided with the contact switch of relay (J1) in its output loop; Second solenoid (L2) of second wire loop is connected in the load output of its full-wave rectification bridge (P2), and the major loop series connection of full-wave rectification bridge (P2) is provided with the contact switch of relay (J2); Interlock is controlled by the armature pull bar double contact switch (K) is set, and the contact of contact switch (e2, e3) is armature limes superiors bit switch contact, and connecting with relay (J2) is arranged at power end; Another of double contact switch is the switch contact of armature limit inferior position to switch (e1, e4), is series on the major loop of full-wave rectification bridge (P1).