CN201576633U - Alternating current contactor - Google Patents
Alternating current contactor Download PDFInfo
- Publication number
- CN201576633U CN201576633U CN2009202132917U CN200920213291U CN201576633U CN 201576633 U CN201576633 U CN 201576633U CN 2009202132917 U CN2009202132917 U CN 2009202132917U CN 200920213291 U CN200920213291 U CN 200920213291U CN 201576633 U CN201576633 U CN 201576633U
- Authority
- CN
- China
- Prior art keywords
- moving
- iron core
- current switch
- static
- dynamic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides an alternating current contactor, comprising an alternating current switch and alternating current contractor blocks connected with the alternating current switch, wherein the alternating current switch is connected with an external communication power supply and comprises a static component and a dynamic component. When the alternating current switch is energized, the static component and the dynamic component generate repulsion. The alternating current contractor blocks comprise a dynamic contractor block and a static contractor block, and the dynamic contractor block is connected with the dynamic component by a couple axle. When the alternating current switch is energized, the dynamic component is far away from the static component based on the repulsion and drives the dynamic contractor block to move by the couple axle to be closed with the static contractor block. Following the gradual nearing and closing of the dynamic contractor block and the static contractor block, the mutual repulsion between the dynamic component and the static component is also reduced, so the alternating current contactor can effectively reduce the impact between dynamic contractors and static contractors, avoid the secondary bounce phenomenon between the dynamic contractor block and the static contractor block and prolong the using life.
Description
Technical field
The utility model relates to a kind of automatic control device, relates in particular to the A.C. contactor in the automatic control device.
Background technology
Along with the universal use of electrical equipment commodity, in daily life, Electrical Safety also becomes the focal issue that people pay close attention to.The extensive use of various automatic control devices has strengthened the fail safe of electricity consumption greatly.Wherein, A.C. contactor is an automatic control device comparatively common in the present daily life.A.C. contactor is mainly used in frequent connection or disjunction alternating current circuit; it is big to have the control capacity; but remote operation; cooperate relay can realize fixed cycle operator, interlocked control, various quantitative controls and decompression and under-voltage protection; be widely used in automatic control circuit; its major control also can be used for controlling other electrical load, as electric heater, illumination, electric welding machine, capacitor group etc. to liking motor.A.C. contactor it utilize main contact to open and close circuit, carries out control command with auxiliary contact.Main contact generally has only normally open contact, and auxiliary contact often has two pairs of contacts with Chang Kai and normally closed function.
The operation principle of existing A.C. contactor: as shown in Figure 1, when the coil electricity of alternating-current switch 1, static iron core produces electromagnetic attraction, the movable core adhesive that will be connected with spring, owing to exchange the three secondary main contacts and movable core interlock of sets of contacts 2, therefore movable core drives three secondary main contacts and moves simultaneously, with three main contact closures, thus energized.When coil blackout, suction disappears, and movable core relies on the restoring force of spring self to drive couple axle and makes major and minor main contact disjunction, cuts off the electricity supply.The weak point of conventional AC contactor is, along with the A.C. contactor prolongation of service time, the aging gradually of spring makes the spring ratio of spring reduce, the electromagnetic attraction of alternating-current switch is far longer than its spring restoring force, thereby be prone to the secondary bounce when making A.C. contactor main contact and secondary main contact closed, cause interrupted arc, cause contact to corrode.Therefore, not only can reduce the useful life of A.C. contactor, also can cause serious security incident.
The utility model content
The problem that the utility model solved is to solve present A.C. contactor because of the electromagnetic attraction of alternating-current switch is far longer than the restoring force of spring, easily produces the secondary bounce when making the A.C. contactor main contact closed, causes interrupted arc, the problem that causes contact to corrode.
In order to address the above problem, the utility model provides a kind of A.C. contactor, comprises alternating-current switch, and the interchange sets of contacts that is connected with alternating-current switch, and alternating-current switch is connected with external AC power supply.Wherein, alternating-current switch comprises quiet assembly and moving assembly, during the alternating-current switch energising, produce repulsion between the quiet assembly of alternating-current switch and the moving assembly, exchange sets of contacts and comprise moving contact group and fixed contact group, the moving contact group is connected with the moving assembly of alternating-current switch by a couple axle, during the alternating-current switch energising, the moving assembly of alternating-current switch away from quiet assembly, drives the moving contact group motion that exchanges sets of contacts by couple axle, with the fixed contact group closure that exchanges sets of contacts based on repulsion.
Further, quiet assembly comprises static iron core and is wound in the outer AC coil of static iron core that moving assembly comprises moving iron core, is wound in outer AC coil and two springs of moving iron core.Wherein, spring one end is fixed, and another movable end is connected with moving iron core.AC coil winding direction on the static iron core is identical with AC coil winding direction on the moving iron core, and two AC coil are connected in parallel in external AC power supply.Described couple axle is connected with moving iron core middle part, and two springs are symmetrically distributed in the couple axle both sides.
Further, the fixed contact group comprises that three main contacts and two are often opened, two normally closed auxiliary fixed contacts; The moving contact group comprises that three secondary main contacts and are often opened, a normally closed auxiliary moving contact.
By above disclosed technical scheme as can be known, the utility model A.C. contactor utilizes the phase repulsive interaction between the dynamic and static assembly of alternating-current switch, feasible moving contact group and the closed also maintenance of fixed contact group that drives the interchange sets of contacts because of repulsion away from the moving assembly of quiet assembly by couple axle.Along with moving contact group and the close gradually extremely closure of fixed contact group, the phase repulsive interaction between the dynamic and static assembly also reduces thereupon.Therefore, when exchanging the sets of contacts closure, can effectively reduce impact force between the dynamic and static contact, avoid the secondary bounce between the dynamic and static sets of contacts, prolong the useful life of A.C. contactor.
Description of drawings
Fig. 1 is the alternating-current switch and the schematic layout pattern that exchanges sets of contacts of existing A.C. contactor;
Fig. 2 is the utility model alternating-current switch and the schematic layout pattern that exchanges sets of contacts.
Embodiment
For technical characterictic of the present utility model is become apparent,, A.C. contactor of the present utility model is further described below in conjunction with accompanying drawing.
A.C. contactor of the present utility model comprises alternating-current switch 1 as shown in Figure 2, and the interchange sets of contacts 2 that is connected with alternating-current switch 1.Alternating-current switch 1 is connected with external AC power supply.Wherein, alternating-current switch comprises quiet assembly 11 and moving assembly 12.During alternating-current switch 1 energising, produce repulsion between the quiet assembly 11 of alternating-current switch and the moving assembly 12.Exchange sets of contacts 2 and comprise moving contact group 22 and fixed contact group 21, moving contact group 22 is connected with the moving assembly 12 of alternating-current switch 1 by a couple axle 4.During alternating-current switch 1 energising, the moving assembly 12 of alternating-current switch 1 away from quiet assembly 11, drives moving contact group 22 motions that exchange sets of contacts 2 by couple axle 4, with fixed contact group 21 closures that exchange sets of contacts 2 based on repulsion.
As shown in Figure 2, quiet assembly 11 comprises static iron core 112 and is wound in the outer AC coil 113 of static iron core that moving assembly 12 comprises moving iron core 121, is wound in outer AC coil 122 and two springs 123 of moving iron core.Wherein, spring 123 1 ends are fixed, and another movable end is connected with moving iron core 121.AC coil 113 winding directions on the static iron core 112 are identical with AC coil 122 winding directions on the moving iron core 121, and two AC coil 113 and 122 are connected in parallel in external AC power supply.When alternating-current switch 1 is connected external AC power supply like this, just can produce electromagnetic repulsion force between quiet assembly 11 and the moving assembly 12.Couple axle 4 is connected with moving iron core 121 middle parts, helps increasing the stationarity of moving contact group 22 motions that are connected with couple axle 4.Two springs are symmetrically distributed in the both sides of couple axle, when dynamic and static iron core produces repulsion, and the impact force when spring 123 uniform restoring forces help reducing dynamic and static sets of contacts closure.When repulsion between the dynamic and static iron core disappeared, the restoring force of spring self resetted iron core 121, drives couple axle 4 moving contact group 22 and fixed contact group 21 are disconnected.
As shown in Figure 2,21 groups of fixed contacts comprise that three main contacts 211, two often open auxiliary fixed contact 212 and two normally closed auxiliary fixed contacts 213.Main contact generally has only normally open contact, and auxiliary contact often has two pairs of contacts with Chang Kai and normally closed function.Three main contacts 201 normally are connected with live wire, zero line, ground wire, are mainly used to open and close circuit.Auxiliary contact 203,204 is used for carrying out control command.Moving contact group 22 comprises that three secondary main contacts 221 and often open auxiliary moving contact 222, one normally closed auxiliary moving contacts 223.The three secondary main contacts 221 and one of moving contact group are often opened auxiliary moving contact 222, one normally closed auxiliary moving contacts 223 and are fixed in couple axle 4.Three secondary main contacts 221 reach often to be opened, and normally closed auxiliary moving contact 222 and 223 is the two ends contact.When one end of secondary main contact was connected with main contact, the other end can connect external motor 3.
When the moving contact group 22 that exchanges sets of contacts 2 is need be with fixed contact group 21 closed, the AC coil 113 of the winding of static iron core 112 and moving iron core 121 and 122 energisings, moving iron core 121 and static iron core 112 are because the electromagnetic repulsion force that 113 and 122 energising backs produce, moving iron core 121 is gradually away from static iron core 112, the three secondary main contacts 221 and one that are connected the moving contact group 22 that is in the interlock state with moving iron core 121 by couple axle 4 are often opened auxiliary moving contact 222, one normally closed auxiliary moving contact 223 is all done corresponding moving, the upper end of three secondary main contacts 221 of moving contact group 22 is connected with three main contacts, 211 closures of fixed contact group 21 at this moment, lower end and motor 3 the access contact closure be connected, make motor be in the closed operating state that connects.Corresponding two ends and two of often opening auxiliary moving contact 222 are often opened auxiliary fixed contact 212 and are connected, and make this circuit be in closed connection status; Separate with two normally closed auxiliary fixed contacts 213 at the two ends of normally closed auxiliary moving contact 223, makes this circuit be in the disjunction state.When the winding around of static iron core 112 and moving iron core 121 cuts off the power supply, electromagnetic repulsion force between static iron core 112 and the moving iron core 121 disappears, moving iron core 121 is close to static iron core 112 under the restoring force effect of spring 123, drive couple axle 4 motions, make three secondary main contacts 221 motions of being fixed in couple axle 4 and separate with three main contacts 211.
The utility model A.C. contactor utilizes the electromagnetic repulsion force that produces between the dynamic and static assembly of alternating-current switch, feasible moving contact group and the closed also maintenance of fixed contact group that drives the interchange sets of contacts because of repulsion away from the moving assembly of quiet assembly by couple axle.Because along with the distance between the dynamic and static assembly of alternating-current switch increases, the phase repulsive interaction between the dynamic and static assembly also reduces thereupon.Therefore, when exchanging the sets of contacts closure, can effectively reduce impact force between the dynamic and static contact, avoid the secondary bounce between the dynamic and static sets of contacts.Simultaneously, the restoring force of the spring in the moving assembly is along with the distance between the dynamic and static assembly increases and increases, thus the impact force when further reducing dynamic and static contact closure.Secondary bounce when therefore A.C. contactor of the present utility model can effectively be avoided the dynamic and static contact closure of conventional AC contactor, and because of the secondary bounce causes the contact erosion that interrupted arc causes, thereby prolong the useful life of A.C. contactor effectively.
Though the utility model discloses as above with preferred embodiment, the utility model is not to be defined in this.Any those skilled in the art without departing from the spirit and scope of the present invention, all can do various changes and modification, so protection scope of the present invention should be as the criterion with claim institute restricted portion.
Claims (5)
1. A.C. contactor, comprise alternating-current switch, and the interchange sets of contacts that is connected with alternating-current switch, described alternating-current switch is connected with external AC power supply, it is characterized in that: described alternating-current switch comprises quiet assembly and moving assembly, when described alternating-current switch is switched on, produce repulsion between described quiet assembly and the described moving assembly; Described interchange sets of contacts comprises moving contact group and fixed contact group, and described moving contact group is connected with described moving assembly by a couple axle; When described alternating-current switch was switched on, described moving assembly away from quiet assembly, drove described moving contact group motion by described couple axle, with described fixed contact group closure based on repulsion.
2. A.C. contactor as claimed in claim 1 is characterized in that: described quiet assembly comprises static iron core and is wound in the outer AC coil of static iron core; Described moving assembly comprises moving iron core, is wound in outer AC coil and two springs of moving iron core, and described spring one end is fixed, and another movable end is connected with described moving iron core.
3. A.C. contactor as claimed in claim 2 is characterized in that: the AC coil winding direction on the described static iron core is identical with AC coil winding direction on the described moving iron core, and described two AC coil are connected in parallel in described external AC power supply.
4. A.C. contactor as claimed in claim 2 is characterized in that: described couple axle is connected with described moving iron core middle part, and described two springs are symmetrically distributed in the both sides of described couple axle.
5. A.C. contactor as claimed in claim 1 is characterized in that: described fixed contact group comprises that three main contacts and two are often opened, two normally closed auxiliary fixed contacts; Described moving contact group comprises that three secondary main contacts and are often opened, a normally closed auxiliary moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202132917U CN201576633U (en) | 2009-12-17 | 2009-12-17 | Alternating current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202132917U CN201576633U (en) | 2009-12-17 | 2009-12-17 | Alternating current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201576633U true CN201576633U (en) | 2010-09-08 |
Family
ID=42696508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202132917U Expired - Fee Related CN201576633U (en) | 2009-12-17 | 2009-12-17 | Alternating current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201576633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275133A (en) * | 2017-06-08 | 2017-10-20 | 无锡市飞沪科技有限公司 | One kind automatically controls electrical equipment |
-
2009
- 2009-12-17 CN CN2009202132917U patent/CN201576633U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275133A (en) * | 2017-06-08 | 2017-10-20 | 无锡市飞沪科技有限公司 | One kind automatically controls electrical equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102034619B (en) | Permanent magnet mechanism automatic changeover switch | |
| CN107946133B (en) | Quick separating brake mechanism and hybrid alternating current circuit breaker | |
| CN205159221U (en) | Relay | |
| CN103715759B (en) | Power selection and interlocking device of automatic change-over switch appliance used in 690V IT system | |
| CN201576633U (en) | Alternating current contactor | |
| CN105207342A (en) | Device and method for zero-crossing split-phase switching control after first cycle wave of double power supply voltage difference | |
| CN108550503A (en) | A kind of D.C. contactor | |
| CN102768919B (en) | Soft-start circuit | |
| CN202633174U (en) | Soft starting circuit | |
| CN204721078U (en) | Zero passage phase-splitting switching control after the first cycle of dual-supply voltage difference | |
| CN104538251A (en) | Contactor driven by capacitive stored energy | |
| CN201927550U (en) | Reversing contactor | |
| CN202930305U (en) | High voltage vacuum circuit breaker with O-shaped electrodynamic force compensation arrangement | |
| CN201298751Y (en) | Modified electricity no-voltage backup power switchover unit used in transformer station | |
| CN105185667A (en) | Novel energy-saving high-breaking control and protection switch | |
| CN110600338A (en) | Low-voltage intelligent charge control switch | |
| CN109192617B (en) | Electromagnetic controllable attraction force is as alternating current contactor of twin coil structure of counter-force | |
| CN105161351A (en) | Vacuum circuit breaker | |
| CN107993896A (en) | A kind of mechanism kept with Electromagnetically-operating machinery | |
| CN201063317Y (en) | Instable equilibrium type high-efficiency contactor | |
| CN219716762U (en) | Electromagnetic structure of alternating current contactor | |
| CN219873375U (en) | Permanent magnet contact and switching device | |
| CN219498936U (en) | Overload protection mechanism of capacitor cabinet and capacitor cabinet | |
| CN201845712U (en) | Bistable-monostable permanent-magnet alternating-current contactor | |
| CN215988467U (en) | Low-voltage rapid ATS switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20121217 |