CN2901557Y - Sucking-on/maintenance circuit of electromagnetic switch mechanism - Google Patents
Sucking-on/maintenance circuit of electromagnetic switch mechanism Download PDFInfo
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- CN2901557Y CN2901557Y CN 200620024602 CN200620024602U CN2901557Y CN 2901557 Y CN2901557 Y CN 2901557Y CN 200620024602 CN200620024602 CN 200620024602 CN 200620024602 U CN200620024602 U CN 200620024602U CN 2901557 Y CN2901557 Y CN 2901557Y
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Abstract
An electromagnetic switch mechanism attracting / maintaining circuit belongs to the emergency protective circuit device field, comprising a first commutating unit, a first and a second switching unit. The electromagnetic switch mechanism attracting / maintaining circuit is characterized in that an anti-countercurrent unit and a filtering unit are disposed between a reduced-voltage / commutating unit and the second switching unit, wherein the anti-countercurrent unit is concatenated between the reduced-voltage / commutating unit and the second switching unit and the filtering unit is joined on the output end of the reduced-voltage / commutating unit in parallel. Equipping the filtering unit can prevent a magnet coil from occurring the phenomenon of losing electric inductance and releasing for maintaining voltage and / or current passing zero, and only the lower maintaining voltage is needed to guarantee the stabilization and the persistence of the attracting power of the magnet coil, thereby reducing the maintaining voltage endured by the magnet attracting coil and decreasing the heating capacity thereof, which is beneficial to prolong the operating life, enhance the operating stability of the whole switch device and reducing the probability of mistaken operation and faults. The electromagnetic switch mechanism attracting / maintaining circuit can be widely used in the controlling domain of the switch mechanism device of each electromagnetic switch.
Description
Technical field
The utility model belongs to emergency protective circuit device field, relates in particular to a kind ofly to be used to power or the operating mechanism of the electromagnetic switch of distribution.
Background technology
Existing electromagnetic switch, its control switch major joint (also claiming main contact) inhale and/device that discharges (being the closed and disconnected of control switch main contact) is a solenoid and supporting iron core and accessory structure spare thereof, when switch needs closure, to its solenoid energising, coil produces electromagnetic attraction, and iron core is attracted and moves downward, and overcomes the pulling force of back-moving spring, the moving contact that drives in the switch main contact contacts with fixed contact, and major loop is connected.
Because the line footpath of the lead of formation solenoid is less, long-time energising can cause its heating, can burn coil when serious, influences the operate as normal and the useful life of switch.
For this reason, various solutions have appearred, relatively typical case and common technical scheme are: in the initial period of solenoid energising, for it provides a stronger current/voltage, when iron core be attracted put in place after, for power consumption and the caloric value that reduces solenoid, usually only provide a lower current/voltage to it, with the suction of keeping solenoid and state (" high pressure inhale and, low voltage sustain " that promptly be commonly called as).
The day for announcing is on November 6th, 1991, notification number is to disclose a kind of " soundless energy-saving phase demodulation electric leakage protector " in the Chinese patent of CN 2088303Y, the thinking of its technical scheme be exactly solenoid inhale and initial stage, for it provides a higher suction and voltage, make switch motion, closure, behind switch closure, provide a low-voltage DC to keep the adhesive of electromagnetic switch, take this to reach energy-conservation, noise reduction, minimizing coil heating amount and prolong the solenoid purpose in useful life.
But there is a problem in technique scheme: when the low voltage sustain state, be pulsating dc voltage owing to keep voltage, have voltage and/or current zero-crossing point, solenoid the suction-combining force moment is zero phenomenon; In order to guarantee the suction-combining force of electromagnet armature, still need the higher voltage of keeping that compares, lose the generation of inductance release phenomenon because of voltage and/or current zero-crossing point to prevent solenoid.
The utility model content
Technical problem to be solved in the utility model provides a kind of electromagnetic switching mechanism adhesive/holding circuit, it can prevent that solenoid is because of keeping the generation that voltage and/or current zero-crossing point lose the inductance release phenomenon, only need the lower voltage of keeping to guarantee the stable of solenoid the suction-combining force and continue, thereby can reduce the voltage of keeping that the electromagnetism pull-in winding born, reduce its caloric value, help prolonging its working life, improve the job stability of whole switching device, reduce the generation probability of its misoperation and fault.
The technical solution of the utility model is: a kind of electromagnetic switching mechanism adhesive/holding circuit is provided, comprise first rectification unit, first switch unit that is serially connected between AC power and the solenoid and be serially connected in step-down/rectification unit and solenoid between second switch unit, it is characterized in that: between the step-down/rectification unit and second switch unit, anti-adverse current unit and filter unit are set; Its described anti-adverse current unit strings is connected between the step-down/rectification unit and second switch unit; Its described filter unit is attempted by the output of step-down/rectification unit.
Further, its first rectification unit and anti-adverse current unit are diode circuit, and its filter unit is a capacitor filter, and its first, second switch unit is that TURP changes circuit.
Concrete, its first rectification unit comprises diode D1, and first switch unit comprises contact K1, and second switch unit comprises contact K2, and step-down/rectification unit comprises transformer B and rectifier bridge Q, and anti-adverse current unit pack is drawn together diode D2, and filter unit comprises capacitor C; Wherein, diode D1 and contact K1 are serially connected between the end of end of AC power and solenoid J, the former limit of transformer B is connected with AC power, its secondary is connected with the ac input end 1,2 of rectifier bridge Q, the dc output end 4 of rectifier bridge Q is connected with the end of solenoid J with contact K2 through diode D2, capacitor C is attempted by between the dc output end 3 and 4 of rectifier bridge Q, the other end ground connection of solenoid J.
Compared with the prior art, the utility model has the advantages that:
1. the output at the low voltage sustain power circuit is provided with filter circuit, pulsating voltage smoothing with the output of low voltage sustain power circuit, avoided keeping the zero crossing phenomenon that voltage occurs, improved the effective value of its output voltage, stop solenoid because of running into the generation of " zero point " voltage abrupt release, improved the suction-combining force and the adhesive stability of solenoid greatly;
2. put before enough solenoid the suction-combining forces guaranteeing, only need the lower voltage of keeping to guarantee the stable of solenoid the suction-combining force and continue, thereby can reduce the pick-up voltage of keeping that the electromagnetism pull-in winding born, reduce its caloric value, help prolonging its working life, improve the job stability of whole switching device, reduce the generation probability of its misoperation and fault.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the line map of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Among Fig. 1, electromagnetic switching mechanism adhesive/the holding circuit of the technical program, comprise first rectification unit, first switch unit that is serially connected between AC power and the solenoid and be serially connected in step-down/rectification unit and solenoid between second switch unit, its inventive point is, between the step-down/rectification unit and second switch unit, be provided with anti-adverse current unit and filter unit, its anti-adverse current unit strings is connected between the step-down/rectification unit and second switch unit; Its filter unit is attempted by the output of step-down/rectification unit.
Further, its first rectification unit and anti-adverse current unit are diode circuit, and its filter unit is a capacitor filter, and its first, second switch unit is that TURP changes circuit.
Among Fig. 2, first rectification unit comprises diode D1, and first switch unit comprises contact K1, and second switch unit comprises contact K2, and step-down/rectification unit comprises transformer B and rectifier bridge Q, and anti-adverse current unit pack is drawn together diode D2, and filter unit comprises capacitor C; Wherein, diode D1 and contact K1 are serially connected between the end of end of AC power and solenoid J, the former limit of transformer B is connected with AC power, its secondary is connected with the ac input end 1,2 of rectifier bridge Q, the dc output end 4 of rectifier bridge Q is connected with the end of solenoid J with contact K2 through diode D2, capacitor C is attempted by between the dc output end 3 and 4 of rectifier bridge Q, the other end ground connection of solenoid J.
Because the utility model is provided with filter circuit at the output of step-down/rectification unit, pulsating voltage smoothing with the output of low voltage sustain power circuit, so can prevent that solenoid is because of keeping the generation that voltage and/or current zero-crossing point lose the inductance release phenomenon, only need the lower voltage of keeping to guarantee the stable of solenoid the suction-combining force and continue, thereby can reduce the voltage of keeping that the electromagnetism pull-in winding born, reduce its caloric value, help prolonging its working life, improve the job stability of whole switching device, reduce the generation probability of its misoperation and fault.
The utility model can be widely used in the control field of the switching mechanism device of various electromagnetic switches.
Claims (6)
1. electromagnetic switching mechanism adhesive/holding circuit, comprise first rectification unit, first switch unit that is serially connected between AC power and the solenoid and be serially connected in step-down/rectification unit and solenoid between second switch unit, it is characterized in that:
Between the step-down/rectification unit and second switch unit, anti-adverse current unit and filter unit are set;
Its described anti-adverse current unit strings is connected between the step-down/rectification unit and second switch unit;
Its described filter unit is attempted by the output of step-down/rectification unit.
2. according to the described electromagnetic switching mechanism adhesive/holding circuit of claim 1, it is characterized in that described anti-adverse current unit is a diode circuit.
3. according to the described electromagnetic switching mechanism adhesive/holding circuit of claim 1, it is characterized in that described filter unit is a capacitor filter.
4. according to the described electromagnetic switching mechanism adhesive/holding circuit of claim 1, it is characterized in that described first rectification unit is a diode circuit.
5. according to the described electromagnetic switching mechanism adhesive/holding circuit of claim 1, it is characterized in that described first, second switch unit is that TURP changes circuit.
6. according to the described electromagnetic switching mechanism adhesive/holding circuit of claim 1, it is characterized in that
Described first rectification unit comprises diode D1;
Described first switch unit comprises contact K1;
Described second switch unit comprises contact K2;
Described step-down/rectification unit comprises transformer B and rectifier bridge Q;
Described anti-adverse current unit pack is drawn together diode D2;
Described filter unit comprises capacitor C;
Wherein,
Diode D1 and contact K1 are serially connected between the end of end of AC power and solenoid J;
The former limit of transformer B is connected with AC power, and its secondary is connected with the ac input end 1,2 of rectifier bridge Q;
The dc output end 4 of rectifier bridge Q is connected with the end of solenoid J with contact K2 through diode D2;
Capacitor C is attempted by between the dc output end 3 and 4 of rectifier bridge Q;
The other end ground connection of solenoid J.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024602 CN2901557Y (en) | 2006-06-02 | 2006-06-02 | Sucking-on/maintenance circuit of electromagnetic switch mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024602 CN2901557Y (en) | 2006-06-02 | 2006-06-02 | Sucking-on/maintenance circuit of electromagnetic switch mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901557Y true CN2901557Y (en) | 2007-05-16 |
Family
ID=38085721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620024602 Expired - Fee Related CN2901557Y (en) | 2006-06-02 | 2006-06-02 | Sucking-on/maintenance circuit of electromagnetic switch mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901557Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950709A (en) * | 2010-09-17 | 2011-01-19 | 上海诺雅克电气有限公司 | Low-voltage holding contactor |
| CN107578953A (en) * | 2017-09-06 | 2018-01-12 | 珠海格力电器股份有限公司 | Relay voltage reduction circuit and control method |
| WO2020063871A1 (en) * | 2018-09-28 | 2020-04-02 | 中兴通讯股份有限公司 | Driving circuit and method for relay, storage medium and electronic apparatus |
-
2006
- 2006-06-02 CN CN 200620024602 patent/CN2901557Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950709A (en) * | 2010-09-17 | 2011-01-19 | 上海诺雅克电气有限公司 | Low-voltage holding contactor |
| CN101950709B (en) * | 2010-09-17 | 2013-05-01 | 上海诺雅克电气有限公司 | Low-voltage holding contactor |
| CN107578953A (en) * | 2017-09-06 | 2018-01-12 | 珠海格力电器股份有限公司 | Relay voltage reduction circuit and control method |
| CN107578953B (en) * | 2017-09-06 | 2019-12-20 | 珠海格力电器股份有限公司 | Relay voltage reduction control circuit and control method |
| WO2020063871A1 (en) * | 2018-09-28 | 2020-04-02 | 中兴通讯股份有限公司 | Driving circuit and method for relay, storage medium and electronic apparatus |
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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: 20070516 Termination date: 20110602 |