Handle Element With Dual Grip Surfaces For Tool Adaptation
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Solution Overview
Problem
Conventional handle tools require long handles for comfortable use, making it difficult to operate short-handled tools like files, rasps, saws, and scrapers efficiently, leading to user fatigue due to the need for wrist twisting and strong thumb pressure, and they are not easily adaptable for different tools.
Innovation Solution
A handle element with multiple grip positions, including a first grip surface perpendicular and a second grip surface parallel to the handle, allowing the wrist to maintain a natural position, reducing fatigue by transmitting force through the arm rather than the wrist, and an adapter area for various handle tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If long handles are used for comfortable grip, then ease of operation is improved, but adaptability for short-handled tools deteriorates
Solution Approach 1:
The handle is divided into two functional segments: a long handle portion for comfortable gripping and a separate, detachable handle element for adapting to different tool lengths. This segmentation allows the long handle to provide ergonomic benefits while the detachable element enables compatibility with short-handled tools like files, rasps, saws, and scrapers.
Solution Approach 2:
The handle element is designed as a universal component that can be attached to various handle tools with different lengths and configurations. The adapter element with multiple gripping surfaces creates a multi-functional system that works with both long-handled and short-handled tools, eliminating the need for different handle designs for different tool types.
2Productivity
If conventional handle tools are operated with one hand, then productivity is improved, but user fatigue increases due to wrist twisting and thumb pressure
Solution Approach 1:
The handle element introduces a new spatial dimension for force application by providing gripping surfaces that extend in multiple directions (perpendicular and parallel to the handle axis). This allows the user to apply force through the arm rather than twisting the wrist, distributing the mechanical load across a larger portion of the body and reducing localized fatigue.
Solution Approach 2:
The handle element changes the parameters of force transmission by creating gripping surfaces at specific angles (perpendicular and parallel to the handle). This modifies the vector of force application, allowing forces to be transmitted through the arm's natural axis rather than through the wrist, thereby reducing fatigue while maintaining productivity.
3Ease of operation
If the handle is designed for specific tool types, then ease of operation is improved, but adaptability to different tools deteriorates
Solution Approach 1:
The handle element serves as a universal adapter that can be attached to various handle tools regardless of their specific type or length. The adapter element with its uniquely shaped gripping surfaces provides a standardized interface that works with files, rasps, saws, scrapers, and other handle tools, eliminating the need for tool-specific handle designs.
Data Source
AI summary
A handle element for receiving a handle of a manageable handle tool, includes an adapter element for at least partially receiving the handle and at least one gripping surface as well as a handle for or with a handle tool. The handle element has a front region V through the region facing the handle tool, a middle region M and a rear region H, and a first gripping surface and a second gripping surface are provided. Both gripping surfaces are oriented differently with respect to the handle or handle tool, such that forces can be applied differently to the handle tool by gripping around a gripping surface.