Vehicle Wiper Assembly with Suction Pump for Water Extraction
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Solution Overview
Problem
Conventional windscreen wipers leave water droplets on the glass surface, especially in dirty or greasy conditions, impairing driver visibility due to deteriorated wiper blade materials that fail to maintain contact across the full length during operation.
Innovation Solution
A wiper assembly with a fluid extraction opening and a suction pump that draws air and water through the wiper blade, using a fluid tight conduit to direct the water away from the window, improving visibility by reducing residual water and dirt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional wiper blades are used to scrape water from the windscreen, then water is removed from the glass surface, but water droplets remain on the windscreen impairing driver visibility
Solution Approach 1:
The patent extracts water from the windscreen surface using a suction pump system with extraction openings in the wiper blade. The suction pump creates negative pressure that actively draws water through the blade structure and channels it away via conduits to discharge outlets, separating the water removal function from the traditional scraping mechanism and achieving more complete water extraction that improves visibility.
2Duration of action of moving object
If wiper blade material deteriorates over time due to exposure to dirt, oil, sunlight and ozone, then the blade cannot maintain contact with the glass across its full length, but the blade continues to be used for wiping
Solution Approach 1:
The patent employs a suction pump system that uses pneumatic pressure differentials to remove water. The suction pump creates a pressure gradient that draws water through extraction openings in the wiper blade and transports it via fluid conduits to discharge outlets. This pneumatic mechanism compensates for blade material deterioration by providing an active water removal system that maintains effectiveness even when the blade's physical contact capability degrades over time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces water and dirt left on the windscreen, enhancing driver visibility by ensuring better contact between the wiper blade and the glass and utilizing a suction mechanism to remove water and dirt efficiently.
Implementation Method 1
a suction pump, configured to draw air and water through the fluid extraction opening of the wiper blade away from the window of the vehicle
Data Source
AI summary
A wiper assembly for a window of a vehicle and a method of cleaning a window are provided. The wiper assembly includes a wiper blade having a fluid extraction opening, a fluid discharge outlet remote from the wiper blade and a fluid tight conduit connecting the fluid extraction opening to the fluid discharge outlet. The wiper assembly may further include a suction pump configured to draw air and water into the fluid extraction opening and through the fluid tight conduit of the wiper assembly, thereby reducing the amount of water left of the window following wiping and improving visibility for the driver.