Patent ID: 6263537
Filing Date: 2001-07-24
Classification: B60S,Y10S

Abstract:
A drive controlling apparatus for a rotary window cleaner comprising:an elevating motor for moving up and down two wipers, which are provided on a front window so as to be close to each other, to a housing position and a start position;a first motor for rotating a first wiper at the start position in intermittent operation, medium-speed operation and high-speed operation;a second motor for rotating a second wiper at the start position in intermittent operation, medium-speed operation and high-speed operation in a direction opposed to that of the first wiper;said elevating motor, said first motor and said second motor each having a brush board; andan electronic control circuit for controlling the upward and downward movement of said first and second wipers, and for controlling the intermittent operation, the medium-operation and the high-speed operation of the first and second wipers, said electronic control circuit being connected to each said brush board of the elevating motor, the first motor and the second motor so as to enable the first and second wipers to perform the upward and downward movement, the intermittent operation, the medium-speed operation and the high-speed operation;said electronic circuit further including provision for controlling a lag operation between said two wipers whereby the first and second motors can be controlled by the electronic control circuit so as to rotate one of said two wipers after a predetermined time from rotation of the other of said two wipers and stop each of said two wipers at the start position for a predetermined time every one rotation in the intermittent operation of the two wipers and thereby rotate the two wipers in the opposed directions with a lag angle formed therebetween without interfering with each other in the medium-speed operation and the high-speed operation.