PURPOSE: To secure a winker canceler of a motorcycle with performance even though the steering wheel is fluctuated at the time of low speed by performing canceling on the basis of the angle of the steering wheel's turn and the angle of its returning with the aid of an electric circuit.
CONSTITUTION: When either the left or right of a switch 3 is closed, a winker lamp is turned into twinkling and at the same time switches 5, 14 are opened, and the (b) or (c) output of a flip-flop 22 will close either of switches 23, 24 in a peak hold circuit B. Among the output voltage of potentiometer 6 representing the angle of steering wheel's turn, the maximum value after removing noises is sent to a resistance 15 as its terminal voltage formed by an amplifier 10 and a capacitor 25. Then the voltage at a resistance 16 varying and the peak voltage retained with a resistance 15 are placed into amplifiers 11, 12 in a comparator circuit C to be compared, and the return angle measured is compared with the left and right setting values owing to resistances 17, 18 and used as the canceling signal with the aid of a transistor 20.
SHIBATA YASUO
HATANAKA KAORU
KAWADA SHIGEO
| JPS5770742A | 1982-05-01 |