CN201498435U - Zero crossing movement magnetic latching relay - Google Patents
Zero crossing movement magnetic latching relay Download PDFInfo
- Publication number
- CN201498435U CN201498435U CN2009203031608U CN200920303160U CN201498435U CN 201498435 U CN201498435 U CN 201498435U CN 2009203031608 U CN2009203031608 U CN 2009203031608U CN 200920303160 U CN200920303160 U CN 200920303160U CN 201498435 U CN201498435 U CN 201498435U
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- CN
- China
- Prior art keywords
- relay
- zero
- zero crossing
- drive wire
- magnetic latching
- 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 - Lifetime
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Abstract
The utility model relates to a zero crossing movement magnetic latching relay, which comprises a casing body, a zero crossing electronic circuit, a driving coil, a connection rod and a contact component, wherein the zero crossing electronic circuit comprises a zero crossing detection sheet and a zero crossing resistor, and the driving coil is connected to the connection rod and the contact component. The zero crossing movement magnetic latching relay is characterized in that the zero crossing electronic circuit is connected to a shaping circuit which is connected to a disconnection delay circuit and the disconnection delay circuit is connected to the driving coil. The zero crossing movement magnetic latching relay has the advantages that the connection and disconnection of a relay occur in a voltage zero crossing point of external power supply, thereby large sparkles produced when the relay is disconnected are avoided, the burning-out of the relay is prevented, and service life of the relay is greatly prolonged.
Description
Technical field
The utility model relates to a kind of relay, relates in particular to a kind of over-zero action magnetic latching relay.
Background technology
Will produce magnetic field by electric current in the line bag of magnetic latching relay, opposite as this magnetic field with the direction in original magnetic field, magnetic latching relay will produce the action of adhesive or disconnection, in general, electric current adds in the drive wire bag in the magnetic latching relay time and the phase relation between the external power are at random, that is to say, obtain in the magnetic latching relay line bag time of electric current may be just in time at the zero phase place of external power, also may be 90 degree phase place places at external power, also may be at 150 degree places certainly.The time that this relay line bag obtains electric current and the uncertainty of external power phase relation cause the size that is switched on or switched off electric current of actuating of relay moment different fully, thereby cause the contact to be burnt to death easily, relay damaged, even cause the relay blast.Electric current when relay is switched on or switched off is zero by being bordering on, thereby the power switched of relay is reduced greatly, prevents relay damaged, becomes a problem that must solve.
The utility model content
The purpose of this utility model provide a kind of can be exactly the over-zero action magnetic latching relay of contact action during the supply voltage zero passage outside.
The technical solution adopted in the utility model is:
Over-zero action magnetic latching relay, comprise housing, zero passage electronic circuit, drive wire bag, connecting rod and contact assembly, described zero passage electronic circuit comprises the zero passage detection sheet and crosses zero resistance, described drive wire bag is connected with connecting rod and contact assembly, described zero passage electronic circuit is connected with shaping circuit, and described shaping circuit is connected with the off delay circuit, and described off delay circuit is connected with the drive wire bag.
Described off delay circuit comprises off delay chip, adjustable resistance and electric capacity, and described adjustable resistance is connected with the off delay chip with shaping circuit respectively; Described electric capacity one side is connected with zero line, and opposite side is connected with the off delay chip.
Described drive wire bag also is in series with outer meeting resistance and controllable silicon successively, described controllable silicon and diac are connected with the off delay chip, described controllable silicon and triggering resistance are connected with the drive wire bag, and pulling relay coil that is connected with the drive wire bag and relay release coil are connected with the alternating current of 220V.
Zero passage electronic circuit of the present utility model is connected with shaping circuit, described shaping circuit is connected with the off delay circuit, described off delay circuit is connected with the drive wire bag, the zero passage electronic circuit is converted into the driving pulse that guarantees the relay contact over-zero action with the adhesive or the turn-off pulse of outside like this, drive wire bag assembly is converted into driving pulse actuating force and by connecting rod the power of adhesive or disconnection is passed to contact assembly, thereby guarantees the over-zero action of relay.Described off delay circuit comprises off delay chip, adjustable resistance and electric capacity, and described adjustable resistance is connected with the off delay chip with shaping circuit respectively; Described electric capacity one side is connected with zero line, and opposite side is connected with the off delay chip, and the width of square-wave pulse depends on the time constant of adjustable resistance and electric capacity.Drive wire bag described in the utility model also is in series with outer meeting resistance and controllable silicon successively, described controllable silicon and diac are connected with the off delay chip, described controllable silicon and triggering resistance are connected with the drive wire bag, pulling relay coil that is connected with the drive wire bag and relay release coil are connected with the alternating current of 220V, like this write off need the circuit of power transformation, rectification, multiplication of voltage, voltage stabilizing and filtering in original relay drive circuit, reduced and manufactured cost.
The utility model has the advantages that: making the adhesive of relay or disconnecting action is that the power source voltage zero crossing takes place outside, thereby produces big spark when avoiding relay to disconnect, and prevents burning to death of relay, prolongs the life-span of relay greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an electrical block diagram of the present utility model.
Wherein: 1: housing, 2: zero passage electronic circuit, 3: the drive wire bag, 4: connecting rod, 5: contact assembly, U1, U2: zero passage detection sheet, U6A: shaping circuit, U3: off delay chip, R4: adjustable resistance, C1: electric capacity, U4, U5: controllable silicon, D3: diac, R6: trigger resistance, T1: pulling relay coil, R2: cross zero resistance, R8: outer meeting resistance, T2: relay release coil.
Embodiment
As illustrated in fig. 1 and 2, over-zero action magnetic latching relay, comprise housing 1, zero passage electronic circuit 2, drive wire bag 3, connecting rod 4 and contact assembly 5, zero passage electronic circuit 2 comprises zero passage detection sheet U1, U2 and zero passage resistance R 2, and drive wire bag 3 is connected with connecting rod 4 and contact assembly 5, and zero passage electronic circuit 2 is connected with shaping circuit U6A, shaping circuit U6A links to each other with the off delay circuit, and the off delay circuit is connected with drive wire bag 3; The off delay circuit comprises off delay chip U3, adjustable resistance R4 and capacitor C 1, and adjustable resistance R4 is connected with off delay chip U3 with shaping circuit U6A respectively, and capacitor C 1 one sides are connected with zero line, and opposite side is connected with off delay chip U3; Drive wire bag 3 also is in series with outer meeting resistance R8 and controllable silicon U5 successively, controllable silicon U5 and diac D3 connect with off delay chip U3, controllable silicon U4 and triggering resistance R 6 are connected with drive wire bag 3, and pulling relay coil T1 that is connected with drive wire bag 3 and relay release coil T2 are connected with the alternating current of 220V.
The utility model is operation like this:
Disconnect action: the crus secunda of delivering to zero passage detection sheet U1 from the signal of operating a switch of ammeter, detected zero cross signal is from the 4th pin output of zero passage detection sheet U1, deliver to by zero passage resistance R 2 on input first pin of shaping circuit U6A, shaping by shaping circuit U6A becomes a complete square wave pulse and is input to off delay chip U3 from shaping circuit U6A crus secunda, the width of the square-wave pulse of off delay chip U3 depends on the time constant of adjustable resistance R4 and capacitor C 1, export from tripod through the pulse after the off delay chip U3 phase shift, trigger controllable silicon U5 by diac D3, make controllable silicon U5 conducting, this moment, the 220V alternating current was by relay release coil T1, outer meeting resistance R8 and controllable silicon U5 get back to zero line, and relay release coil T1 produces magnetic field disconnects relay contact assembly 5 by connecting rod 4.
Closed action: the crus secunda of delivering to zero passage detection sheet U2 from the switching signal of ammeter, the zero cross signal that this moment, zero passage test pieces U2 detected, zero cross signal is from the 4th pin output of zero passage detection sheet U2, trigger controllable silicon U4 by triggering resistance R 6, make controllable silicon U4 conducting, this moment, the 220V alternating current was got back to zero line by pulling relay coil T1 and controllable silicon U4, and pulling relay coil T1 produces magnetic field closes relay contact assembly 5 by connecting rod 4.
Claims (3)
1. over-zero action magnetic latching relay, comprise housing, zero passage electronic circuit, drive wire bag, connecting rod and contact assembly, described zero passage electronic circuit comprises the zero passage detection sheet and crosses zero resistance, described drive wire bag is connected with connecting rod and contact assembly, it is characterized in that described zero passage electronic circuit is connected with shaping circuit, described shaping circuit is connected with the off delay circuit, and described off delay circuit is connected with the drive wire bag.
2. over-zero action magnetic latching relay according to claim 1 is characterized in that described off delay circuit comprises off delay chip, adjustable resistance and electric capacity, and described adjustable resistance is connected with the off delay chip with shaping circuit respectively; Described electric capacity one side is connected with zero line, and opposite side is connected with the off delay chip.
3. over-zero action magnetic latching relay according to claim 2, it is characterized in that described drive wire bag also is in series with outer meeting resistance and controllable silicon successively, described controllable silicon and diac are connected with the off delay chip, and described controllable silicon and triggering resistance are connected with the drive wire bag; Pulling relay coil that is connected with the drive wire bag and relay release coil are connected with the alternating current of 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203031608U CN201498435U (en) | 2009-05-14 | 2009-05-14 | Zero crossing movement magnetic latching relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203031608U CN201498435U (en) | 2009-05-14 | 2009-05-14 | Zero crossing movement magnetic latching relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498435U true CN201498435U (en) | 2010-06-02 |
Family
ID=42441636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203031608U Expired - Lifetime CN201498435U (en) | 2009-05-14 | 2009-05-14 | Zero crossing movement magnetic latching relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201498435U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715022A (en) * | 2013-12-18 | 2014-04-09 | 北海市深蓝科技发展有限责任公司 | Self-adaptive micro-jitter magnetic latching relay zero-cross on-off control device |
| CN104851752A (en) * | 2014-02-13 | 2015-08-19 | 德昌电机(深圳)有限公司 | Electrical contactor and method for controlling delayed closing and opening contacts of electrical contactor |
-
2009
- 2009-05-14 CN CN2009203031608U patent/CN201498435U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715022A (en) * | 2013-12-18 | 2014-04-09 | 北海市深蓝科技发展有限责任公司 | Self-adaptive micro-jitter magnetic latching relay zero-cross on-off control device |
| CN104851752A (en) * | 2014-02-13 | 2015-08-19 | 德昌电机(深圳)有限公司 | Electrical contactor and method for controlling delayed closing and opening contacts of electrical contactor |
| CN104851752B (en) * | 2014-02-13 | 2019-04-05 | 德昌电机(深圳)有限公司 | Electric contactor and the method for controlling the timing closing of electric contactor contact and opening |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100602 Effective date of abandoning: 20090514 |