Chair Back Pad Structure With Adjustable Toothed Arm Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional chair back pad structures cannot be adjusted to accommodate different user figures or sitting postures, leading to inadequate support and the need for additional pads, which are not customizable in thickness, resulting in limited ergonomic options.
Innovation Solution
A pad structure with a multi-section engaging design featuring a slideable deck and rail plate that adjusts the position of toothed arms to match various user figures and sitting postures, allowing for frontward and backward movement to change the distance between a positioning panel and the rail plate for ergonomic adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pad angle is adjusted using a conventional fulcrum mechanism, then the pad can provide support for different users, but the pad position cannot be changed and the fulcrum remains fixed, limiting adaptability to different sitting postures
Solution Approach 1:
The pad structure is divided into multiple independent sections: the pad body, the rail plate, the toothed arms, and the slideable deck. This segmentation allows each component to perform a specific function and be adjusted independently, enabling the pad to adapt to different sitting postures while maintaining a manageable overall structure.
Solution Approach 2:
The invention transforms the static fulcrum mechanism into a dynamic adjustable system. The toothed arms can be raised and lowered by pushing the slideable deck along the rail plate, allowing the pad position to change dynamically according to different sitting postures and user needs.
2Adaptability or versatility
If additional pads are added to accommodate different users, then support for various figures can be provided, but the cost increases and the thickness cannot be customized
Solution Approach 1:
The single pad structure is designed to perform multiple functions by adjusting the position of the toothed arms along the rail plate. This universal design allows one pad to accommodate different user figures and sitting postures, replacing the need for multiple separate pads and reducing overall system complexity.
Solution Approach 2:
The invention enables continuous adjustment of the pad position by changing the engagement point of the toothed arms on the rail plate. This parameter change allows the same pad to provide optimal support for different user sizes and postures, eliminating the need for multiple pads with fixed thicknesses.
3Ease of operation
If the pad position is fixed relative to the chair back, then the structure is simple, but the pad cannot be adjusted to match different sitting postures or user figures
Solution Approach 1:
The rail plate serves as an intermediary component between the fixed chair back structure and the adjustable pad. It provides a guided path for the toothed arms, enabling smooth position adjustment while maintaining structural integrity and reducing overall system complexity.
Solution Approach 2:
The adjustment mechanism is designed to be self-operating through the interaction of the toothed arms and the slideable deck. By simply pushing the deck along the rail, the user can adjust the pad position without requiring complex controls or additional power sources.
Data Source
AI summary
A pad structure for a chair back contains a pad, an adjusting member disposed on a back side of the pad, and a rail plate connected with the adjusting member. The pad is capable of being adjusted frontward and backward. The adjusting member includes a positioning panel to axially connect with a toothed edge of each of two toothed arms. Another end of one toothed arm is secured on a face of the rail plate by using a first connector, and another end of another toothed arm is coupled with a slideable deck by a second connector to form a multi-section engaging design. Thereby, the two toothed arms slide along the slideable plate to change a relative angle between the two toothed arms.