Rain sensor system for a motor vehicle
First Claim
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1. A rain sensor system for a motor vehicle comprises:
- a sensor element for detecting moisture on a surface of the sensor element;
an evaluation electronics which is connected with the sensor element and is operative, above a certain limit value of the moisture, to control a windshield wiper which wipes a windshield of the motor vehicle;
wherein the sensor element is separate from the windshield, and is adapted for attachment in the vicinity of the windshield of the motor vehicle;
the system further comprises a wiper blade, separate from the windshield wiper, for wiping the sensor element, the wiper blade and the windshield wiper being pivoted about a common axis of rotation and providing respective wipings during respective pivotings about the common axis of rotation;
a hollow shaft disposed coaxially with the common axis of rotation for supporting the windshield wiper and the wiper blade during a pivoting of the wiper blade and the windshield wiper about the common axis of rotation; and
a driver element mechanically connecting the windshield wiper to the wiper blade to enable the windshield wiper to drive the wiper blade across the sensor element.
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Abstract
In a rain sensor system for a motor vehicle, a sensor element is provided as separate part for attachment in the vicinity of a vehicle window. The sensor element is wiped by a separate wiper blade which is fastened to a windshield wiper or driven by the latter. As a function of the a degree of wetness present on its top, the sensor element supplies electric signals to an evaluation electronics. Above a limit value of the signals, the evaluation electronics connects the windshield wiper.
29 Citations
13 Claims
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1. A rain sensor system for a motor vehicle comprises:
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a sensor element for detecting moisture on a surface of the sensor element; an evaluation electronics which is connected with the sensor element and is operative, above a certain limit value of the moisture, to control a windshield wiper which wipes a windshield of the motor vehicle; wherein the sensor element is separate from the windshield, and is adapted for attachment in the vicinity of the windshield of the motor vehicle; the system further comprises a wiper blade, separate from the windshield wiper, for wiping the sensor element, the wiper blade and the windshield wiper being pivoted about a common axis of rotation and providing respective wipings during respective pivotings about the common axis of rotation; a hollow shaft disposed coaxially with the common axis of rotation for supporting the windshield wiper and the wiper blade during a pivoting of the wiper blade and the windshield wiper about the common axis of rotation; and a driver element mechanically connecting the windshield wiper to the wiper blade to enable the windshield wiper to drive the wiper blade across the sensor element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A rain sensor system for a motor vehicle comprises:
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a sensor element for detecting moisture on a surface of the sensor element; an evaluation electronics which is connected with the sensor element and is operative, above a certain limit value of the moisture, to control a windshield wiper which wipes a windshield of the motor vehicle; wherein the element is separate from the windshield, and is adapted for attachment in the vicinity of a windshield of the motor vehicle; and the system further comprises a wiper blade, separate from the windshield wiper, for wiping the sensor element; a fixed guide sleeve for the windshield wiper; and wherein the sensor element is adapted for attachment to the guide sleeve.
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Specification