Pivoting Surface-Treatment Handle for Stable Pressure Control
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Solution Overview
Problem
Existing devices for treating target surfaces, such as windows and floors, face challenges in maintaining consistent pressure and control, especially when dealing with large or vertically oriented surfaces, leading to issues like chatter or separation from the surface.
Innovation Solution
A device with a handle and head mounted in a pivotal relationship, allowing them to articulate relative to each other, which provides ergonomic convenience and stability by adjusting the angle and moment distribution during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle and head are fixed in a planar relationship, then the device structure is simple, but it is difficult to maintain control and consistent pressure on large or vertical surfaces
Solution Approach 1:
The handle and head are connected through a pivot joint that allows dynamic adjustment of the angle between them. This enables the head to maintain optimal contact with the target surface while the handle remains ergonomic, allowing the user to apply consistent pressure across various surface orientations and sizes without increasing overall structural complexity
2Reliability
If the head is positioned between waist and shoulders, then adequate pressure can be applied, but the user encounters difficulty transitioning at waist level causing chatter or separation
Solution Approach 1:
The pivotal connection between handle and head allows the angle to dynamically adjust during the stroke, particularly during the transition phase at waist level. This dynamic adjustment maintains optimal head positioning and contact pressure throughout the entire motion range, eliminating chatter and separation that occur with fixed-angle designs
3Ease of operation
If a curved handle is used, then ergonomic improvement is achieved, but the head remains in fixed relationship to the handle limiting effectiveness
Solution Approach 1:
The pivot joint enables the head to independently adjust its angle relative to the curved handle, combining the ergonomic benefits of a curved handle design with the adaptability of variable head positioning. This allows the handle to follow ergonomic contours while the head maintains optimal contact angle with the target surface
4Ease of operation
If the handle is made adjustable and non-planar, then ergonomics improve, but the device complexity increases
Solution Approach 1:
The single pivot joint provides the necessary ergonomic adaptability by allowing natural angular adjustment during use, achieving ergonomic benefits without requiring multiple adjustable components or complex mechanisms. The simplicity of the pivotal connection maintains structural efficiency while providing the needed flexibility
Data Source
AI summary
A device for treating a target, such as cleaning a window. The device has a handle and head, mounted in pivotal relationship to each other. When the head is placed in sliding, contacting relationship with the target surface the handle can pivot relative to the head for the ergonomic convenience of the user.