Powered Seating Backrest Adjustment for Variable Seat Depth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional adjustable seating devices lack in providing a balanced set of properties, such as adjustable configurations that accommodate various user needs effectively.
Innovation Solution
A seating device with a frame, seat platform, and backrest, equipped with powered adjustment mechanisms that allow for multiple adjustments, including movement of the backrest and seat platform, armrests, and footrest, to accommodate different user positions and needs, controlled by a controller for coordinated adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional adjustable seating devices are used, then basic adjustability is provided, but the balance of properties and accommodation of various user needs is insufficient
Solution Approach 1:
The seating device is divided into multiple independently adjustable segments including the seat platform, backrest, and footrest, each capable of movement along multiple axes. This segmentation allows each component to be adjusted independently to accommodate different user needs while maintaining overall system manageability
Solution Approach 2:
The seating device incorporates multiple powered adjustment mechanisms that enable the same basic structure to serve multiple functions - providing lumbar support, adjusting seat angle, positioning footrest, and facilitating easy entry/exit. This multi-functionality increases adaptability without proportionally increasing structural complexity
2Adaptability or versatility
If multiple powered adjustment mechanisms are added to provide various adjustments, then adaptability and user accommodation improve, but device complexity increases
Solution Approach 1:
Multiple adjustment functions are merged into integrated powered mechanisms. The seat platform, backrest, and footrest adjustments are coordinated through a unified control system that combines multiple actuators, reducing the overall complexity compared to separate manual adjustment systems for each component
Solution Approach 2:
The seating device transitions from static to dynamic adjustment capabilities through powered mechanisms that enable real-time reconfiguration. The system can dynamically adjust to different user positions and needs, with coordinated movement of multiple components simultaneously controlled by a central controller
Data Source
AI summary
A seating device such as a chair or sofa. The seating device includes a frame, a seat platform supported by the frame, and a backrest attached to the seat platform. The seat platform has opposite front and rear ends. The backrest has a first backrest portion extending upwardly from proximate the rear end of the seat platform. A lower end of the first backrest portion is positioned adjacent to an upper surface of the seat platform. The first backrest portion is capable of being moved forwardly and rearwardly along the upper surface of the seat platform while the lower end remains proximate the upper surface of the seat platform. A backrest-adjustment powered actuator operates the backrest for moving at least the first backrest portion forwardly and rearwardly partially along the upper surface of the seat platform to adjust an effective depth of the seat platform.