CN2651057Y - Automatic protective capacitance flash relay - Google Patents
Automatic protective capacitance flash relay Download PDFInfo
- Publication number
- CN2651057Y CN2651057Y CN 03249843 CN03249843U CN2651057Y CN 2651057 Y CN2651057 Y CN 2651057Y CN 03249843 CN03249843 CN 03249843 CN 03249843 U CN03249843 U CN 03249843U CN 2651057 Y CN2651057 Y CN 2651057Y
- Authority
- CN
- China
- Prior art keywords
- relay
- capacitor
- flasher relay
- normally closed
- secondary coil
- 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
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Abstract
An automatic protect-capacitance flash relay is provided, which comprises a main coil L1, a secondary coil L2, a normally closed contact K, a relay J of a magnetic circuit component M and a capacitance C. The utility model is characterized in that: the utility model is also composed of a sampling circuit, one end of the sampling circuit is connected with the negative electrode of the capacitance C and the output terminal of the normally closed contact K, and the other end is connected with an output terminal of a flash relay L, and a protection control circuit, which is controlled by the sampling circuit and connected with the junction of the positive electrode of the capacitance C and the secondary coil L2 between the output terminal of the flash relay L. The automatic protect-capacitance flash relay has the advantages of being simple in structure, reliable in operation, unable to damage the contact by the short-circuit load and long in service life.
Description
Technical field
The utility model belongs to power actuated vehicle signal control device technical field, is specifically related to a kind of automatic protection condenser flasher relay.
Background technology
The condenser flasher relay is simple in structure with it, wide accommodation is cheap for manufacturing cost and account for very big ratio in power actuated vehicle steering controling signal device; but; present widely used power actuated vehicle condenser flasher relay is not because the actv. protection is carried out in the contact; when load short circuits; the contact can produce serious electro spark scaling loss because of overload; thereby influence the service life of flasher relay, will cause scrapping of flasher relay when serious.
The purpose of invention
The purpose of this utility model is in order to overcome the weak point of existing product, protects that simple in structure, reliable operation, contact can not damaged by short circuit load, the condenser flasher relay of long working life and provide a kind of.
The content of invention
The purpose of this utility model is achieved in that
The utility model is made of the relay and the electric capacity that comprise main coil, secondary coil, normally closed contact, magnetic circuit member, it is characterized in that: it also comprises, and an end is connected with the mouth of normally closed contact with the electric capacity negative pole, the other end and flasher relay mouth bonded assembly sample circuit and be subjected to sample circuit control, be connected in the protection control circuit between capacitance cathode and secondary coil junction and the flasher relay mouth.When using the utility model,, pass through flashing light indicator power connection negative pole at the flasher relay mouth at flasher relay input end power connection positive pole.After the energising of flasher relay input end, pass through main coil, a normally closed contact and an end are connected with the mouth of electric capacity negative pole and normally closed contact, power to flashing light indicator by the mouth of flasher relay behind the other end and the flasher relay mouth bonded assembly sample circuit, flashing light indicator is lighted, simultaneously, main coil and secondary coil produce electromagnetic force, by the magnetic circuit member normally closed contact is disconnected, cut off the power supply of giving flashing light indicator, flashing light indicator is extinguished, at this moment, charge to electric capacity by main coil and secondary coil, the electromagnetic force that main coil and secondary coil produce continues to make normally closed contact to remain closed, when electric capacity be charged to saturated after, no current passes through in main coil and the secondary coil, electromagnetic force disappears, normally closed contact is closed again, the main coil energising, again generate an electromagnetic field, at this moment, the electric energy that stores in the electric capacity discharges by secondary coil and normally closed contact, and the electromagnetic field that electromagnetic field that produces in the secondary coil and main coil produce is cancelled out each other, the electric energy that stores up to electric capacity all consumes, the electromagnetic field that electric current produces in the main coil produces electromagnetic force, make normally closed contact closed again, repeat successively, reach the effect of flash of light control.When outer load short circuits; working current by sample circuit increases; sample circuit output protection control signal is to the protection control circuit; the work of protection control circuit; mouth short circuit with capacitance cathode and flasher relay; make the electric current in main coil and the secondary coil continue to keep; thereby the electromagnetic force that main coil and secondary coil are produced keeps; make the normally closed contact of relay keep disconnecting; avoid load short circuits that normally closed contact is caused damage, after load short circuits was eliminated and cut off the power supply of flasher relay, the short-circuit protection state automatically terminated; flasher relay recovers normal working, thereby reaches the purpose of this utility model.
The description of the drawings
Accompanying drawing 1 the utility model schematic block circuit diagram.
Accompanying drawing 2 the utility model embodiment schematic circuit diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Referring to accompanying drawing 1; the utility model is made of the relay J and the capacitor C that comprise main coil L1, secondary coil L2, normally closed contact K, magnetic circuit member M, it is characterized in that: it also comprises, and an end is connected with the mouth of capacitor C negative pole and normally closed contact K, the other end and flasher relay mouth L bonded assembly sample circuit and be subjected to sample circuit control, be connected in the protection control circuit between capacitor C anodal and secondary coil L2 junction and the flasher relay mouth L.When using the utility model,, pass through flashing light indicator power connection negative pole at flasher relay mouth L at flasher relay input end B power connection positive pole.After flasher relay input end B energising, by main coil L1, a normally closed contact K and an end are connected with the mouth of capacitor C negative pole with normally closed contact K, mouth L by flasher relay behind the other end and the flasher relay mouth L bonded assembly sample circuit powers to flashing light indicator, flashing light indicator is lighted, simultaneously, main coil L1 and secondary coil L2 produce electromagnetic force, by magnetic circuit member M normally closed contact K is disconnected, cut off the power supply of giving flashing light indicator, flashing light indicator is extinguished, at this moment, charge to capacitor C by main coil L1 and secondary coil L2, the electromagnetic force that main coil L1 and secondary coil L2 produce continues to make normally closed contact K to remain closed, when capacitor C be charged to saturated after, no current passes through among main coil L1 and the secondary coil L2, electromagnetic force disappears, normally closed contact K is closed again, main coil L1 and secondary coil L2 energising, again generate an electromagnetic field, at this moment, the electric energy that stores in the capacitor C discharges by secondary coil L2 and normally closed contact K, the electromagnetic field that electromagnetic field that produces among the secondary coil L2 and main coil L1 produce is cancelled out each other, the electric energy that stores up to capacitor C all consumes, the electromagnetic field that electric current produces among the main coil L1 produces electromagnetic force, make normally closed contact K closed again, repeat successively, reach the effect of flash of light control.When outer load short circuits; working current by sample circuit increases; sample circuit output protection control signal is to the protection control circuit; the work of protection control circuit; with the mouth L short circuit of capacitor C positive pole with flasher relay; make the electric current among main coil L1 and the secondary coil L2 continue to keep; thereby the electromagnetic force that main coil L1 and secondary coil L2 are produced keeps; make the normally closed contact K of relay J keep disconnecting; avoid load short circuits that normally closed contact is caused damage, after load short circuits was eliminated and cut off the power supply of flasher relay, the short-circuit protection state automatically terminated; flasher relay recovers normal working, thereby reaches the purpose of this utility model.
Referring to accompanying drawing 2, the utility model is made of the relay J and the capacitor C that comprise main coil L1, secondary coil L2, normally closed contact K, magnetic circuit member M, it is characterized in that: it comprises that also the resistance R 2 and anodal capacitor C coupling end, the negative pole anodal and secondary coil L2 of being connected to that are connected between capacitor C negative pole and the flasher relay mouth L are connected to the controllable silicon SCR 1 between capacitor C negative pole and the flasher relay mouth L and are connected the resistance R 3 that SCR1 controls the utmost point and resistance R 2 and main coil L1 junction.When outer load short circuits; working current by resistance R 2 increases; the current potential of R2 and R3 junction increases; the control electrode potential of SCR1 increases; the SCR1 conducting; with the mouth L short circuit of capacitor C positive pole with flasher relay; make the electric current among main coil L1 and the secondary coil L2 continue to keep; thereby the electromagnetic force that main coil L1 and secondary coil L2 are produced keeps, and makes the normally closed contact K of relay J keep disconnecting, and avoids load short circuits that normally closed contact K is caused damage; after load short circuits is eliminated and is cut off the power supply of flasher relay; the short-circuit protection state automatically terminates, and flasher relay recovers normal working, thereby reaches the purpose of this utility model.
Claims (2)
1, a kind of automatic protection condenser flasher relay; constitute by the relay J and the capacitor C that comprise main coil L1, secondary coil L2, normally closed contact K, magnetic circuit member M, it is characterized in that: it also comprises, and an end is connected with the mouth of normally closed contact K with the capacitor C negative pole, the other end and flasher relay mouth L bonded assembly sample circuit and be subjected to sample circuit control, be connected in the protection control circuit between capacitor C anodal and secondary coil L2 junction and the flasher relay mouth L.
2, automatic protection condenser flasher relay as claimed in claim 1; it is characterized in that: sample circuit is made of the resistance R 2 that is connected between capacitor C negative pole and the flasher relay mouth L, and the protection control circuit is connected to anodal coupling end, the negative pole with secondary coil L2 of capacitor C by positive pole and is connected to the controllable silicon SCR 1 between capacitor C negative pole and the flasher relay mouth L and is connected the resistance R 3 that SCR1 controls the utmost point and resistance R 2 and main coil L1 junction and constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249843 CN2651057Y (en) | 2003-08-08 | 2003-08-08 | Automatic protective capacitance flash relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03249843 CN2651057Y (en) | 2003-08-08 | 2003-08-08 | Automatic protective capacitance flash relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651057Y true CN2651057Y (en) | 2004-10-27 |
Family
ID=34327644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03249843 Expired - Fee Related CN2651057Y (en) | 2003-08-08 | 2003-08-08 | Automatic protective capacitance flash relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651057Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466409C (en) * | 2005-10-10 | 2009-03-04 | 陈万兴 | Short-circuit protecting method with contact flasher and flasher with short-circuit protection |
| CN103841685A (en) * | 2014-03-10 | 2014-06-04 | 宁波市鄞州永林电子电器有限公司 | Circuit board for flasher for vehicle and flasher with circuit board |
| CN107834695A (en) * | 2017-11-08 | 2018-03-23 | 柏宜照明（上海）股份有限公司 | A kind of fire-fighting equipment power supply with relay protection circuit |
-
2003
- 2003-08-08 CN CN 03249843 patent/CN2651057Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466409C (en) * | 2005-10-10 | 2009-03-04 | 陈万兴 | Short-circuit protecting method with contact flasher and flasher with short-circuit protection |
| CN103841685A (en) * | 2014-03-10 | 2014-06-04 | 宁波市鄞州永林电子电器有限公司 | Circuit board for flasher for vehicle and flasher with circuit board |
| CN107834695A (en) * | 2017-11-08 | 2018-03-23 | 柏宜照明（上海）股份有限公司 | A kind of fire-fighting equipment power supply with relay protection circuit |
| CN107834695B (en) * | 2017-11-08 | 2024-05-17 | 柏宜照明（上海）股份有限公司 | Fire-fighting equipment power supply with relay protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |