Windscreen wiper device
First Claim
1. A windscreen wiper device (1) for a motor vehicle with at least one wiper motor (2) having a motor crank (4) connected with at least one gearing (3) downstream of the wiper motor in order to drive a wiper arm coupled therewith such that said arm executes an oscillating wiping movement on a windscreen of the motor vehicle, wherein the wiper motor is coupled with a control unit which adjusts a motor power generated by the wiper motor (2) as a function of a translation ratio resulting from the position of the gearing (3), characterized in that to generate as uniform a wiper arm movement as possible on the windscreen during a dynamic reversing process of the wiper arm out of a turning point, the control unit maintains a level of motor power until after the motor crank (4) has accelerated out of the respective wiper arm turning point.
1 Assignment
0 Petitions
Accused Products
Abstract
A windscreen wiper device (I) for a motor vehicle. The device includes at least one wiper motor (2) on which a motor crank (4) is provided connected to at least one gearing (3) which is downstream of said wiper motor (2), so as to drive a wiper arm that is coupled thereto such that said arm performs an oscillating wiper movement on a windscreen of said motor vehicle, said wiper motor (2) being coupled to a control unit. Motor power generated by the wiper motor (2) is adjusted by the control unit depending on a transmission ratio which results from the position of said gearing (3). The control unit delays a reduction in the motor power until after the motor crank (4) has accelerated out of the respective wiper arm turning points to produce as uniform a wiper arm movement as possible on the windscreen.
30 Citations
19 Claims
- 1. A windscreen wiper device (1) for a motor vehicle with at least one wiper motor (2) having a motor crank (4) connected with at least one gearing (3) downstream of the wiper motor in order to drive a wiper arm coupled therewith such that said arm executes an oscillating wiping movement on a windscreen of the motor vehicle, wherein the wiper motor is coupled with a control unit which adjusts a motor power generated by the wiper motor (2) as a function of a translation ratio resulting from the position of the gearing (3), characterized in that to generate as uniform a wiper arm movement as possible on the windscreen during a dynamic reversing process of the wiper arm out of a turning point, the control unit maintains a level of motor power until after the motor crank (4) has accelerated out of the respective wiper arm turning point.
- 7. A method for controlling a windscreen wiper device (1) for a motor vehicle, with at least one wiper motor (2) on which is provided a motor crank (4) which is connected with at least one gearing (3) downstream of the wiper motor (2) to drive a wiper arm coupled therewith such that it executes an oscillating wiping movement on a windscreen of the motor vehicle, wherein the motor wiper (2) is coupled with a control unit which adjusts a motor power generated by the wiper motor (2) as a function of a translation ratio resulting from the position of the gearing (3) to adapt the motor power and a torque acting on the gearing (3) or wiper arm to the power required to execute the wiping movement of the wiper arm, characterized in that to generate as uniform a wiper arm movement as possible on the windscreen, during a dynamic reversing process of the wiper arm out of its turning point a level of motor power is maintained until after the motor crank (4) or wiper arm has accelerated out of its turning point.
Specification