Ergonomic chair
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Solution Overview
Problem
Conventional ergonomic chairs often fail to provide a comfortable, ergonomically optimal, and active sitting position, leading to muscle tension and reduced cognitive engagement, especially during prolonged use like gaming or computer work.
Innovation Solution
An ergonomic chair design featuring a seat that urges the user to a forward position, with a softer cushioning at the front, a chest support for forward leaning, and a hip support that maintains the user's lumbar vertebrae in a specific support plane, encouraging an active sitting posture while minimizing pressure on sensitive areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the seat is configured to urge the user forward with firm support, then the user is encouraged to maintain an active sitting position, but pressure on the private parts of male users increases causing discomfort
Solution Approach 1:
The seat cushion has differentiated local quality with varying firmness across different zones. The front portion has reduced firmness or a recessed area to decrease pressure on sensitive regions, while the rear portion maintains higher firmness to provide the necessary forward urging force. This spatial variation in cushion properties resolves the contradiction by allowing the seat to simultaneously encourage forward posture while protecting sensitive areas from excessive pressure.
2Ease of operation
If conventional ergonomic chairs provide back support, then users can relax, but they assume a passive sitting position that reduces cognitive engagement and reaction times
Solution Approach 1:
Instead of supporting the user's back to allow relaxation, the chair inverts the approach by supporting the chest and urging the user forward. The chest support acts as the primary support element rather than the back rest, fundamentally changing the posture mechanism. This inversion encourages an active forward-leaning position that enhances cognitive engagement while the hip support prevents excessive forward movement that would cause muscle tension.
3Reliability
If the chair supports multiple body parts with multiple support elements, then ergonomic correctness is improved, but the device complexity increases
Solution Approach 1:
The chair divides the support function into distinct segmented elements: a seat with differentiated cushioning zones, a lower leg support, a chest support, and a hip support. Each segment performs a specific ergonomic function independently. This segmentation allows the complex ergonomic requirements to be met through coordinated simple elements rather than a single complex mechanism, resolving the contradiction between ergonomic correctness and device complexity.
Data Source
AI summary
An ergonomic chair (300) comprising a seat (310), a lower leg support (320), a chest support (330), and a hip support (360);the seat (310) for supporting the posterior thigh (11) and/or buttocks (12) of a seated user (10), the seat (310) being configured to urge the hip of a seated user (10) in a forward direction;the lower leg support (320) for supporting the anterior side of the lower legs (14) of the seated user (10);the chest support (330) for supporting the chest (15) of the seated user (10) in a forward leaning position of the seated user (10);the hip support (360) is configured to support the anterior hip of a seated user (10) as the seat (310) urges the seated user's (10) hip forwardly towards the hip support (360).