Sliding Foot Support Structure for Low-Seat Tiltable Armchairs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional tiltable armchair mechanisms limit design aesthetics and ergonomics due to fixed foot support surfaces, preventing modern, low-seat designs and inadequate support for taller users, with insufficient foot support extension and structural complexity.
Innovation Solution
A quadrangular rigid structure with sliding frames and articulated arms, allowing adjustable foot support height and extension, integrated with a pivoting mechanism to reduce seat height and enhance foot support length, using a dual rail system and electric actuators for versatile positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the front of the seat is used as a support for the feet by striking it upward, then the foot support function is achieved, but the seat height cannot be reduced and the design aesthetics are compromised
Solution Approach 1:
The foot support function is separated from the seat structure by introducing a独立的 articulated foot support assembly that can extend and retract independently, allowing the seat to maintain its aesthetic design while providing adequate foot support
Solution Approach 2:
The foot support assembly uses articulated arms and sliding frames that can dynamically extend forward when needed and retract when not in use, providing adaptive foot support without compromising the static aesthetic appearance of the seat
2Adaptability or versatility
If the foot support surface is extended to provide adequate length for taller users, then ergonomics are improved, but the structural complexity and weight increase
Solution Approach 1:
The foot support assembly is designed with articulated arms and sliding frames that allow dynamic extension to various lengths, adapting to different user heights without requiring multiple fixed-length support surfaces
Solution Approach 2:
The articulated mechanism serves multiple functions: it provides extended foot support for taller users, maintains compact form for shorter users, and can be integrated with the seat's existing tilting mechanism, reducing the need for separate systems
3Adaptability or versatility
If the foot support is extended forward to provide adequate length, then ergonomics are improved, but the spacing below the seat line is reduced
Solution Approach 1:
The foot support assembly can dynamically extend forward when needed and retract to a compact position when not in use, providing adequate foot support length while maintaining spacing below the seat line during normal sitting positions
Data Source
AI summary
A leg and foot support structure applied to tiltable armchairs, comprised of a quadrangular rigid structure, said quadrangular rigid structure being lifted by means of feet; a pivotable quadrangular articulated frame for supporting the feet that is assembled on the front half and within said rigid structure; moving parts of said structure being operated by driving assemblies comprised of articulated arms connected and actuated simultaneously by a driving unit. An inner sliding frame composed of two quadrangular structures that slide over each other through articulated arms pivoted to the respective structures and to a rigid articulated frame that is angularly moved in order to be underneath a seat structure; said quadrangular structures start their relative slippage only after the articulated rigid frame reaches an end of its angular displacement.