JPS54124445A - Intermittent wiper circuit - Google Patents
Intermittent wiper circuitInfo
- Publication number
- JPS54124445A JPS54124445A JP3074678A JP3074678A JPS54124445A JP S54124445 A JPS54124445 A JP S54124445A JP 3074678 A JP3074678 A JP 3074678A JP 3074678 A JP3074678 A JP 3074678A JP S54124445 A JPS54124445 A JP S54124445A
- Authority
- JP
- Japan
- Prior art keywords
- wiper
- transistor
- thyristor
- contact side
- common contact
- 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.)
- Pending
Links
Abstract
PURPOSE: To prevent generation of uncomfortable noises during operation of wiper, by eliminating the use of electromagnetic relayrs from the intermittent wiper circuit.
CONSTITUTION: At the rest position W1 of wiper, common contact C of synchronous switch 2 is located at its brake contact side B. In this state, if a trigger pluse is given to the gate of thyristor 3, ground terminal of wiper motor 1 is held at the grounding potential through the conduction of thyristor 3 and the wiper starts its swinging. By the voltage developed across resistor 4, transistor 7 conducts while transistor 5 is de-energized. When the wiper is swung to position W2, common contact C is switched to the grounding contact side E whereby thyristor 3 and transistor 7 are de-energized. On the other hand, when the wiper returns to position W2 from position W3, common contact C is again switched to braking contact side B, whereby transistor 5 conducts and both ends of the wiper motor 1 is shortcitcuited. Resultantly, the wiper is braked by the induction voltage and stopped at position W1.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3074678A JPS54124445A (en) | 1978-03-17 | 1978-03-17 | Intermittent wiper circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3074678A JPS54124445A (en) | 1978-03-17 | 1978-03-17 | Intermittent wiper circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54124445A true JPS54124445A (en) | 1979-09-27 |
Family
ID=12312235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3074678A Pending JPS54124445A (en) | 1978-03-17 | 1978-03-17 | Intermittent wiper circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54124445A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60176958U (en) * | 1984-05-02 | 1985-11-25 | アスモ株式会社 | wiper drive device |
US4614903A (en) * | 1983-09-14 | 1986-09-30 | Itt Industries, Inc. | Windshield wiper speed control arrangement |
JPS6382859A (en) * | 1986-09-29 | 1988-04-13 | Shindengen Electric Mfg Co Ltd | Wiper motor driving circuit |
US5306991A (en) * | 1989-06-01 | 1994-04-26 | Nippon Cable System Inc. | Window wiper and wiper actuating mechanism |
-
1978
- 1978-03-17 JP JP3074678A patent/JPS54124445A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4614903A (en) * | 1983-09-14 | 1986-09-30 | Itt Industries, Inc. | Windshield wiper speed control arrangement |
JPS60176958U (en) * | 1984-05-02 | 1985-11-25 | アスモ株式会社 | wiper drive device |
JPH0315410Y2 (en) * | 1984-05-02 | 1991-04-04 | ||
JPS6382859A (en) * | 1986-09-29 | 1988-04-13 | Shindengen Electric Mfg Co Ltd | Wiper motor driving circuit |
US5306991A (en) * | 1989-06-01 | 1994-04-26 | Nippon Cable System Inc. | Window wiper and wiper actuating mechanism |
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