Seat
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Solution Overview
Problem
Conventional seats lack adequate support and cushioning performance, particularly as user posture changes, leading to uneven pressure distribution and insufficient support.
Innovation Solution
A seat design featuring a base with through holes, laterally arranged seat cushions, and supporting members with guiding rods and springs that compress to adjust support based on user posture, providing multi-point support and improved cushioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If two sponge cushions are used to support the user, then the seat provides basic cushioning, but the support is insufficient when user posture changes
Solution Approach 1:
The seat is divided into multiple independent supporting elements (multiple springs arranged in arrays) rather than using a single cushioning mass. Each spring acts as an independent support unit that can respond individually to pressure changes, enabling both strong support and adaptability to various sitting postures
Solution Approach 2:
The supporting elements use springs that can dynamically adjust their compression level based on the pressure applied by the user's body. This dynamic response allows the seat to automatically adapt to different sitting positions and weight distributions, providing appropriate support strength for each posture
2Strength
If oscillating members are added to increase support, then the seat can move with user posture changes, but cushioning performance deteriorates
Solution Approach 1:
The oscillating mechanism is extracted and replaced with simple spring-based supporting elements. This removal of complex oscillating components eliminates the compromise in cushioning performance while retaining the ability to provide strong support through the spring's elastic properties
Solution Approach 2:
The complex mechanical oscillating system is replaced with a simpler spring-based mechanical system. The springs provide both support strength and cushioning through their elastic deformation, eliminating the need for separate oscillating mechanisms that compromised cushioning performance
3Ease of manufacture
If buffer members are used to improve cushioning performance, then good cushioning is achieved, but the buffer members easily deviate laterally and decrease support
Solution Approach 1:
The spring acts as an intermediary element between the base and the board, mediating the force transmission while maintaining vertical alignment. The spring's coiled structure naturally resists lateral deviation while still providing vertical cushioning support, solving the problem of lateral instability
Solution Approach 2:
The supporting elements change their physical parameters (spring compression, stiffness) based on the applied load. The springs maintain their vertical orientation through proper geometric design while their compression level adjusts to provide both cushioning and strong support, preventing lateral deviation
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 seat provides enhanced support and cushioning, ensuring stability and comfort by adjusting support force based on user posture through the compression of springs, addressing the limitations of existing seat designs.
Implementation Method 1
the spring is compressed along an axial direction of the shank to avoid deviation by the shank and provide good support
Data Source
AI summary
A seat has a base, two seat cushions disposed above the base, and two supporting members mounted on the seat cushions and connected to the base. Each one of the supporting members has multiple supporting elements. Each one of the supporting elements has a guiding rod and a spring. The guiding rod is mounted on the base and is screwed into a corresponding one of the seat cushions. The spring is disposed around the guiding rod. Two ends of the spring abut against the base and the corresponding one of the two seat cushions. In use, the spring can generate different degrees of compression and provide different degrees of supporting force. Deviation of the spring is limited by the guiding rod to avoid excess of the deviation and ensure sufficient support. The seat has both the support and the cushioning performance to improve sitting comfort.