Segmented Chair Seat Board with 125–135° Ergonomic Support
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Solution Overview
Problem
Conventional chair seat boards fail to provide an optimal angle for users, leading to waist pain due to gravity, and often result in incorrect posture and kyphosis, with complex configurations and unreasonable waist angles causing health issues.
Innovation Solution
An ergonomic chair seat board with a frame unit allowing independent movement, supported by a multi-layered support unit and covered with memory foam, featuring omnidirectional central spheres and spring groups for flexible movement, providing an optimal 125-135 degree angle and sciatic balance, and an adjustable backboard that deforms according to user posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional tilting seat board is used to make the waist comfortable, then the user can lie down comfortably, but it causes an unreasonable waist angle due to body deformation which results in fatal consequences for waist health
Solution Approach 1:
The patent changes the fundamental parameter of the seat board angle from a tilting mechanism to a fixed ergonomic angle of 125-135 degrees. This parameter change ensures the waist maintains a neutral posture, preventing the harmful deformation that occurs with conventional tilting mechanisms while still providing comfort support.
Solution Approach 2:
Instead of allowing the seat board to tilt forward to accommodate body deformation (conventional approach), the patent inverts the approach by designing the seat board at a fixed angle that prevents excessive deformation in the first place. The support unit is configured to maintain this optimal angle, reversing the conventional logic of adapting to deformation versus preventing it.
2Stability of the object's composition
If the seat board is made rigid to provide stable support, then structural stability is improved, but it cannot adapt to different user postures and causes discomfort
Solution Approach 1:
The seat board is segmented into multiple independent frames (first frame, second frame, third frame, fourth frame) that can move independently relative to each other. Each frame is connected through support units with springs and central spheres, allowing localized adaptation while maintaining overall structural stability. This segmentation enables different parts of the seat board to respond to different user pressures independently.
Solution Approach 2:
The patent introduces dynamic elements through springs and central spheres in the support units, allowing the seat board to adapt its shape based on user weight and posture. The frames can tilt and move dynamically while the overall structure maintains stability through the engineered 125-135 degree angle configuration and interconnected support system.
3Ease of operation
If a complex tilting mechanism is added to adjust the seat board angle, then waist comfort can be improved, but the configuration and connection relationship become very complicated
Solution Approach 1:
The complex tilting function is achieved through segmentation into multiple simple frames and support units rather than a single complex mechanism. Each support unit with springs and central spheres is a simple component, but their combination creates the desired ergonomic tilting effect, reducing overall system complexity while maintaining functionality.
Solution Approach 2:
The support units with springs and central spheres provide automatic adjustment based on user weight and posture without requiring complex control mechanisms. The system self-regulates the seat board angle and frame positions, eliminating the need for motors, sensors, or complex mechanical tilting mechanisms while still achieving waist comfort.
4Object-affected harmful factors
If the seat board is designed with fixed angle to prevent waist bending, then waist health is protected, but it reduces comfort and adaptability for different users
Solution Approach 1:
The patent optimizes the seat board angle parameter to 125-135 degrees, which is the specific range that simultaneously prevents harmful waist bending and provides comfort. This parameter optimization ensures the waist maintains neutral posture while the frame structure and support units provide adaptability for different user sizes and preferences.
Solution Approach 2:
The segmented frame structure allows different regions of the seat board to adapt to different user body parts while maintaining the overall ergonomic angle. The independent frames can move to accommodate user variations, providing comfort without compromising the waist-protective angle configuration.
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 solution minimizes waist pain by maintaining a neutral posture, preventing excessive bending, and maximizing sciatic balance and weight distribution, while allowing comfortable and adaptive seating without interference, ensuring optimal comfort and ergonomic support.
Implementation Method 1
implementing to move it up and down depending on the user's sitting posture
Implementation Method 2
making a strength of the area corresponding to a user's sciatic site greater than that of the other areas in implementing a memory foam that covers the frames
Implementation Method 3
combining omnidirectional movement of a central sphere in a recess and flexible movement of a plurality of frames relative to spring groups to realize independent movement of the plurality of frames
Data Source
AI summary
Disclosed is a chair seat board 100 and a chair 1000 to which a chair backboard 200 is coupled. The chair seat board 100 according to an embodiment of the present invention may comprise: a frame unit 40 having a plurality of frames (41, 42, 43, 44) configured in a hollow shape, respectively, and implemented to allow independent movement; and a support unit configured to support the frame unit 40 while being coupled to the frame unit 40 on a lower side of the frame unit 40.