PURPOSE: To reduce troublesomeness and to improve forward visual sense by providing a means made to a sweep characteristic wherein deceleration speed of wiper speed is largely reduced on the way of deceleration side in a wiping stroke of a wiper blade.
CONSTITUTION: Speed of a motor 4 in a motor part 14 is variably controlled by input of signal from a switch 11 in a wiper switch part 10, via a drive control unit 13 in a control unit 12. Respective positions of OFF, INT, LOW, and HIGH are provided to the switch 11. Moreover, a position detecting switch 15 is provided to a wiper driving system, and revolution speed of the motor 4 is feedback-controlled by the position detection signal thereof. In the case of variable control of the motor revolution speed by the control unit 13, where T is the time required from a starting point to a finishing point and S is a wiping area, wiping action is made to wipe 0.55S in early 0.4T, to wipe 0.25S in middle 0.35T, and to wipe 0.02S in final 0.25T.
NEMOTO HIDEAKI
YAMAGUCHI YASUYUKI
KANEDA MASAYUKI
