Windshield Wiper Assembly With Tilting and Length Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wiper systems for vehicles, particularly those with larger windshields, often fail to adequately clean the upper areas and corners of the windshield, and struggle with maintaining a consistent wiping angle on curved surfaces.
Innovation Solution
A wiper system featuring a support assembly with a motorized wiper arm that can pivot, adjust length, and move linearly along a guide rail, controlled by motors and sensors to ensure complete coverage and optimal wiping on curved surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional pendulum wipers are used, then the structure is simple, but the windshield coverage is insufficient especially for upper areas and corners
Solution Approach 1:
The wiper blade is divided into multiple independent segments that can pivot and adjust independently. Each segment can be controlled separately to reach different areas of the windshield, including upper areas and corners that conventional pendulum wipers cannot cover. This segmentation allows the wiper to adapt to complex windshield geometries while maintaining manageable system complexity.
Solution Approach 2:
The wiper system employs dynamic adjustment mechanisms where the blade segments can change their angle and position during operation. Motors and actuators enable real-time adjustment of each segment's orientation, allowing the wiper to maintain optimal contact with the windshield surface across various angles and positions, thereby maximizing coverage area.
2Manufacturing precision
If conventional wiper systems are used on curved windshields, then the system is simple, but the wiping angle cannot be maintained consistently
Solution Approach 1:
The wiper blade incorporates dynamic angle adjustment capabilities through motorized actuators that can pivot each blade segment independently. This allows the system to maintain a consistent wiping angle relative to the curved windshield surface by continuously adapting the blade orientation during the wiping motion, ensuring uniform contact pressure and effective cleaning across the entire curved surface.
Solution Approach 2:
The system changes the orientation parameters of the wiper blade segments in real-time to match the curvature of the windshield. By adjusting the angle and position parameters of each blade segment, the wiper maintains optimal contact with the curved surface throughout the wiping stroke, ensuring consistent wiping angle and pressure despite the varying geometry of the windshield.
3Area of stationary object
If additional pendulum wipers are added to cover larger windshields, then the coverage area increases, but the un-wiped area at upper corners remains
Solution Approach 1:
The wiper blade is segmented into multiple independently controllable sections that can be positioned and angled differently. This allows the wiper to cover the entire windshield surface including upper corners by having different segments reach different areas simultaneously, ensuring complete coverage without leaving unwiped zones that would persist with additional pendulum wipers.
Solution Approach 2:
The wiper system transitions from the traditional two-dimensional pendulum arc motion to three-dimensional movement by allowing blade segments to pivot and adjust in multiple directions. This enables the wiper to access upper corner areas and complex windshield geometries that are unreachable with conventional planar pendulum motion, ensuring complete coverage of the entire windshield surface.
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 system effectively cleans the entire windshield surface, including corners, and maintains a consistent wiping pressure and angle, improving wiping efficiency on both flat and curved windshields.
Implementation Method 1
at least one electromagnetic coil that surrounds the plurality of perforations, said at least one electromagnetic coil being adapted to interact with the permanent magnets to generate a magnetic induction-based electrodynamic force that leads to a linear motion of the support assembly along the guide rail
Data Source
AI summary
A wiper system for a vehicle windshield, the wiper system comprising a support assembly that is slidably movable along a guide rail, a wiper rotatably mounted on the support assembly, the wiper comprising a wiper arm and a wiper blade connected thereto, wherein the support assembly comprises a first motor mounted on a motor base, the motor base being slidably movable relative to a tilting table between at least two different positions for interacting with a first coupling element to rotate the wiper arm around a rotation axis, and for interacting with a second coupling element to adjust a length of the wiper, a second motor adapted to pivot the tilting table around a pivot axis, the tilting table being movable between at least two different positions, i.e., a non-operating position and a tilted position wherein the wiper blade is inclined thus applying a pressure on the vehicle windshield.