JPS62179861U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the configuration of a wiper control device for a vehicle, which is an embodiment of this invention. FIG. 2 is a diagram showing operating waveforms of various parts of the wiper control device shown in FIG. 1 when the wiper blade is operated at a low speed. FIG. 3 is a diagram showing the configuration of a conventional vehicle wiper control device. In the figure, 1 is a wiper motor, 2 is an intermittent wiper relay, 3 is a wiper control switch, and 4 is a wiper motor.
is a washer motor, 5 is an ignition switch, 6 is a power supply, 11 is a motor, 12 is a limit switch, 30 is a timer, 40 is a relay drive circuit,
RL1 and RL2 are relays, and L21 and L22 are relay switches. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claim for Utility Model Registration] The operation of a wiper blade that is enabled to operate by being supplied with voltage from a power source installed in a vehicle, and that at least removes water droplets attached to the windshield and improves the visibility of the driver of the vehicle. A wiper control device for controlling a wiper blade, wherein the wiper blade has a predetermined return position and an intermediate position different from the return position, and receives voltage from the power source to operate the vehicle. a first switching means for transmitting the power supply voltage to bring the first switching means into a conductive state; a second switching means that enters a cutoff state after a predetermined time has elapsed in response to the off state of the first switching means, receives and transmits voltage from the power supply, and puts the wiper control device into an operable state; instruction signal generation means for generating a signal instructing the operating mode of the wiper blade; and position detection for detecting the position of the wiper blade and generating a signal in response to the wiper blade being in the return position and the intermediate position. means for receiving the output signal of the position detecting means and the output signal of the instruction signal generating means, and selectively outputting one of the signals, and selecting the wiper blade in response to the output signal from the selecting means. a wiper drive means for driving the first switching means; and a control means that becomes operable in response to the output of the first switching means and controls a selection operation of the selection means in response to an output signal from the instruction signal generation means. The control means controls the position when the wiper blade stop signal is given from the instruction signal generating means when the wiper blade is in the operable state, and when the wiper blade operation instruction signal is given when the wiper blade is inoperable and the wiper blade operation becomes the operable state thereafter. The operation of the selection means is controlled so as to transmit the output of the detection means to the drive means, and the predetermined delay time of the second switching means is determined by the time required for the wiper blade to return to the return position. A wiper control device for a vehicle that is set to exceed the time.