Fatigue Reduction Device with Concave Arm Frame
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Solution Overview
Problem
Many bags, carriers, and objects lack comfortable handles or straps, leading to hand fatigue during extended use, prompting users to carry them using alternative parts of their arm, which becomes uncomfortable over time due to the existing shape and design.
Innovation Solution
A fatigue reduction device with a frame that receives a handle perpendicularly to its longitudinal axis, featuring inwardly concave user-faceable surfaces to conform to the arm, along with extensions and attachment mechanisms like clips or Velcro, to secure and stabilize handles or straps, providing ergonomic support and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional handles or straps are used, then the device structure remains simple, but hand fatigue occurs during extended use
Solution Approach 1:
The patent introduces an intermediary device (the frame with concave surfaces) that mediates between the user's arm and the handle/strap. This frame acts as a mediator that redistributes the mechanical load from the hand to the arm, reducing fatigue while maintaining compatibility with existing handles and straps.
Solution Approach 2:
The frame is segmented into multiple concave surfaces (first concave surface for the forearm, second concave surface for the upper arm) that can independently conform to different parts of the arm. This segmentation allows the device to adapt to various arm positions and shapes, improving comfort without requiring a completely new design.
2Ease of operation
If users carry objects using different parts of their arm, then hand fatigue is reduced, but discomfort occurs over time due to existing shape and design
Solution Approach 1:
The frame incorporates curved concave surfaces that match the natural curvature of the human arm. This curvature allows the frame to conform to the arm's shape, distributing pressure evenly across the forearm and upper arm, thereby extending the duration of comfortable carrying.
Solution Approach 2:
Different portions of the frame have different concave surfaces tailored for specific arm regions. The first concave surface is optimized for the forearm while the second concave surface is optimized for the upper arm, allowing each region to be supported in its optimal position for extended duration comfort.
3Ease of operation
If a frame with concave surfaces is introduced, then ergonomic support and fatigue reduction are achieved, but device complexity increases
Solution Approach 1:
The frame is designed as a universal device that can work with various types of handles and straps from different carriers. By creating a single multi-functional frame that adapts to different inputs, the patent avoids the complexity of designing specialized frames for each carrier type, achieving ergonomic support through a versatile rather than overly complex structure.
Data Source
AI summary
The fatigue reduction device includes a frame configured to receive a handle substantially perpendicularly to a longitudinal axis of the frame. A user-faceable portion of the frame is inwardly concave to conform to an arm of a user.