Adjustable Leg Rest with Compression Axle and Rotatable Platform
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Solution Overview
Problem
Conventional leg rests are not portable and adjustable for different settings, limiting their versatility and usability in various installations.
Innovation Solution
A leg/footrest apparatus featuring an adjustable-length axle with a compression rod and a rotatable rest platform that can switch between in-use and storage orientations, secured by a rotational lock, and operated via a foot pedal, allowing for horizontal or vertical positioning and easy installation between furniture walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional leg rests are made fixed and stable for different settings, then installation reliability is improved, but portability and ease of repositioning deteriorate
Solution Approach 1:
The leg rest apparatus employs a compression rod mechanism that allows the axle length to be dynamically adjusted. The compression rod can be compressed to shorten the axle for portability and expanded to extend the axle for stable installation, enabling the structure to transition between mobile and fixed states while maintaining reliability when deployed
2Adaptability or versatility
If the rest platform is made rotatable for versatile positioning, then adaptability is improved, but structural complexity increases
Solution Approach 1:
The rest platform is balanced using a counterweight mechanism that offsets the platform's weight, allowing it to rotate smoothly between horizontal and vertical orientations without requiring complex motors or power sources. The balance mechanism enables versatile positioning while maintaining relatively simple mechanical structure
Solution Approach 2:
The rest platform is designed to be rotatable about the longitudinal axis of the axle, allowing dynamic repositioning between horizontal (in-use) and vertical (storage) orientations. This dynamic capability provides versatility for different installations and uses without requiring permanent fixed mounting
3Adaptability or versatility
If the axle length is made adjustable for different installations, then adaptability is improved, but structural complexity increases
Solution Approach 1:
The axle length is made adjustable through a compression rod mechanism that changes the axial dimension parameter. The compression rod can be compressed to shorten the axle for portable storage and expanded to extend the axle to match different wall spacings, providing installation adaptability through a single adjustable parameter rather than multiple fixed-length components
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
Enables portable, adjustable, and versatile leg or footrest solutions that can be easily installed and repositioned, maintaining a horizontal rest surface regardless of orientation, enhancing user comfort and convenience.
Implementation Method 1
an adjustable-length axle having a compression rod to force first and second ends of the axle away from one another
Implementation Method 2
a rest platform that is rotatable about a longitudinal axis of the axle
Implementation Method 3
A rotational lock may releasably secure the rest platform in the storage orientation
Data Source
AI summary
A leg/footrest apparatus includes an adjustable-length axle having a compression rod to force first and second ends of the axle away from one another, and a rest platform that is rotatable about an axis of the axle. The apparatus may include a U-shaped member having first and second ends that extend from the axle and a base portion that extends between the first and second ends coupled to the rest platform. The rest platform may be rotatable about the base portion and may be balanced such that a rest surface of the rest platform remains substantially horizontal as the U-shaped member rotates about the axle. The rest platform may be rotatable between an in-use orientation and a storage orientation. A rotational lock may releasably secure the rest platform in the storage orientation. A foot pedal may be configured to rotate the rest platform between the in-use and storage orientations.