Assisted Chair Assembly for Low-Effort Standing Support
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Solution Overview
Problem
Existing chair designs do not facilitate standing up with minimal effort, often requiring significant user exertion and potentially risking back injury during the process.
Innovation Solution
A chair design featuring a pair of spaced bases with a primary arm, seat, rest arm, and backrest, allowing users to stand with minimal effort by leveraging angled and coupled components for support and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional chair designs are used, then the structure is simple, but the user requires significant exertion to stand up and risks back injury
Solution Approach 1:
The chair employs a dynamic arm mechanism that moves from a stored position to a support position during the standing process. The arm is coupled to the seat and can transition between positions to provide assistance force, transforming the static chair structure into a dynamic system that adapts to the user's standing motion and reduces effort required
Solution Approach 2:
The arm acts as an intermediary mechanical element between the user and the ground. It provides a leveraged support point that the user can push against, mediating the force required to stand up by distributing the effort through the arm's mechanical advantage rather than requiring direct force from the user's body
2Ease of operation
If the seat is positioned lower for comfort, then the user can sit more comfortably, but the user requires more effort to stand up
Solution Approach 1:
The arm serves as a mechanical intermediary that provides leverage for users to stand up from lower seat positions. By positioning the arm at an optimal height and coupling it to the seat, users can push against the arm to reduce the force required to overcome gravity and stand, effectively mediating between the low seat position and the standing motion
Data Source
AI summary
A chair assembly includes a pair of bases that are spaced apart. A primary arm is coupled between the pair of bases. A seat is coupled to the primary arm. The seat may support a user in a position that allows the user to stand with a minimal amount of effort. A rest arm is coupled to the primary arm. A backrest is coupled to the rest arm. The backrest may support the user in an upright position.