Flexible-Joint Window Wiper for Cleaning Past Windowsills
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Solution Overview
Problem
Conventional window wipers with rigidly interconnected wiper heads and handles struggle to maintain an optimal angle during window cleaning, especially when a windowsill is present, leading to incomplete cleaning and handling difficulties.
Innovation Solution
A window wiper with a flexible joint connecting the wiper head and handle, allowing the offset angle to adjust from an initial to a maximum final angle against the spring force of the joint, enabling effective cleaning of the lower window region without changing the squeegee lip's angle relative to the window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wiper head and wiper handle are rigidly interconnected, then the structure is simple and stable, but the offset angle cannot be adjusted when needed
Solution Approach 1:
The patent applies the dynamics principle by replacing the rigid connection with a flexible joint that allows dynamic adjustment of the offset angle. The flexible joint enables the wiper head and handle to change their relative angle during operation, adapting to different cleaning situations while maintaining structural simplicity.
Solution Approach 2:
The patent implements parameter changes by allowing the offset angle between the wiper head and handle to vary from an initial angle to a final angle. This parameter adjustment is achieved through the flexible joint's ability to bend and change configuration, enabling adaptation to different windows and cleaning requirements without complicating the overall structure.
2Ease of operation
If the wiper handle is moved past a windowsill, then the lower region of the window can be cleaned, but the handle contacts the windowsill with a rigid connection
Solution Approach 1:
The flexible joint provides dynamic adaptability that allows the wiper handle to clear windowsills during operation. As the handle moves past the windowsill, the flexible joint bends to accommodate the obstacle, preventing contact and enabling continuous cleaning of the lower window region without interruption or damage.
Solution Approach 2:
The flexible joint acts as a flexible element that can deform to navigate around obstacles like windowsills. This flexibility allows the handle to pass over the windowsill without contact, eliminating the harmful factor of collision while maintaining the ability to clean the entire window surface.
3Adaptability or versatility
If the offset angle is changed before wiping, then the angle can be adapted to circumstances, but it cannot be changed during the wiping procedure
Solution Approach 1:
The flexible joint enables continuous dynamic adjustment of the offset angle during the wiping procedure. Unlike rigid connections that require stopping to adjust, the flexible joint allows real-time angle changes as the wiper is in use, eliminating time loss and maintaining adaptability throughout the entire cleaning process.
Solution Approach 2:
The flexible joint maintains continuous adaptability throughout the wiping procedure, allowing the offset angle to be adjusted continuously without interrupting the cleaning action. This ensures that the wiper can adapt to changing conditions throughout the entire operation, maximizing efficiency and eliminating idle adjustment time.
4Length of moving object
If a long wiper handle is used, then the user can reach higher windows, but the handle contacts the windowsill when cleaning lower regions
Solution Approach 1:
The flexible joint provides the necessary dynamics to a long wiper handle, allowing it to bend and clear windowsills during operation. This enables users to benefit from the extended reach of a long handle while eliminating the harmful contact with windowsills that would otherwise occur when cleaning lower window regions.
Solution Approach 2:
The flexible joint acts as a flexible element that allows the long handle to deform and pass over windowsills without contact. This maintains the advantage of handle length for reaching high windows while preventing the disadvantage of windowsill contact during lower region cleaning.
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
Enables thorough window cleaning by maintaining a constant squeegee lip angle, allowing the wiper handle to be moved past windowsills without contact, improving handling and ensuring complete window coverage without manual angle adjustments.
Implementation Method 1
the wiper head and the wiper handle are interconnected by a flexible joint, and wherein the wiper head and the wiper handle are configured to be movable from an initial offset angle into a maximum final offset angle against the spring force of the flexible joint
Implementation Method 2
movable from an initial offset angle into a maximum final offset angle against the spring force of the flexible joint
Data Source
AI summary
A window wiper is substantially tee-shaped, having a wiper head and a wiper handle, the wiper head being bent with respect to the wiper handle and the wiper head and the wiper handle delimiting a bending angle. The wiper head and the wiper handle may be connected to each other by a flexible joint, the wiper head and the wiper handle being movable from an initial bending angle to a maximum final bending angle against the spring force of the flexible joint.