Chair and seat support mechanism
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Solution Overview
Problem
Office rotating chairs lack adequate support for natural body movements, leading to discomfort and reduced work efficiency, as existing support mechanisms are limited to front-rear direction and do not accommodate left-right movements, causing instability and potential floor damage.
Innovation Solution
A chair with an omnidirectional connection unit and return-force generation mechanism that allows the seat to move in all directions, including front-rear and left-right, while generating a return force to maintain balance and prevent floor contact, ensuring comfortable sitting and high work efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a support mechanism is designed to operate only in the front-rear direction, then the structure is simple, but the seated person cannot move in the left-right direction, reducing comfort and adaptability
Solution Approach 1:
The support mechanism transitions from single-direction (front-rear) operation to multi-directional operation by adding left-right movement capability through a pivoting connection between the support post and seat, enabling two-dimensional movement support
2Adaptability or versatility
If the seat is allowed to pivot around the lower end of the support post as a fulcrum, then left-right movement is enabled, but the falling moment increases and the seated person must brace feet to the floor, reducing stability
Solution Approach 1:
The spring mechanism provides a counterbalancing force that opposes the falling moment generated by seat pivoting, reducing the need for the seated person to brace their feet and improving overall stability while maintaining multi-directional movement capability
3Ease of manufacture
If the supporting post contacts the floor when the seated person sits down, then the structure is simple, but the seat sinks repeatedly and the floor may be damaged, reducing reliability
Solution Approach 1:
The spring acts as an intermediary element between the support post and the floor, absorbing the impact when the post contacts the floor and preventing direct force transmission that would cause seat sinking and potential floor damage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The chair provides stable support for natural body movements, reducing the need for foot bracing and preventing floor damage, allowing for comfortable long-term sitting and maintaining high work efficiency by accommodating all directional movements with a flexible and balanced support system.
Implementation Method 1
a return-force generation mechanism configured to generate, by elevating a center of gravity of the seat in accordance with an operation of the seat from the reference position, in accordance with an amount of movement, a return force in a direction of returning the seat to the reference position
Data Source
AI summary
A chair comprises: a leg 1 erected on a floor surface; a seat 3 arranged above the leg 1; and a support mechanism 8 interposed between the leg 1 and the seat 3, wherein the support mechanism 8 is arranged below the seat 3 and is configured to movably support the seat 3 along a predetermined trajectory by having an omnidirectional connection unit 72 configured to operably connect in all directions including the front-rear direction and the left-right direction, comprises: a seat inclining function configured to downwardly incline a tip side in a movement direction of the seat 3, and further comprises: a return-force generation mechanism configured to generate, by elevating a center of gravity of the seat 3, a return force in a direction of returning the seat 3 to the reference position.