Threaded Furniture Leg Riser With Secure Grip and Stable Support
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Solution Overview
Problem
Existing height adjustment mechanisms for furniture are often complex to operate and provide insufficient support, posing a risk of the furniture falling over, especially when used by the elderly, infirm, or disabled individuals.
Innovation Solution
A height adjustment apparatus featuring a ground-engaging support member with an internal thread and a height adjustment member that can be rotated to adjust the height, combined with item engagement arrangements such as resiliently deformable material sheets or rigid members for secure engagement with furniture legs, along with a scale for height measurement and connection members for linking multiple units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing height adjustment mechanisms are used, then height adjustment is possible, but the operation becomes complicated and support is insufficient
Solution Approach 1:
The height adjustment apparatus is divided into distinct functional segments: a support member with internal thread, a height adjustment member with external thread, and item engagement arrangements. This segmentation allows each component to perform its specific function independently, simplifying the overall operation while maintaining adjustability.
Solution Approach 2:
The threadable connection between the support member and height adjustment member creates a self-adjusting mechanism where rotation of the height adjustment member automatically raises or lowers it relative to the support member, providing intuitive self-service operation without complex controls.
2Reliability
If existing height adjustment mechanisms are used, then height adjustment is possible, but secure support is not provided and furniture may fall over
Solution Approach 1:
The resiliently deformable material sheet with interconnecting slots creates a flexible yet secure engagement structure that can adapt to the item being supported while maintaining firm grip, providing reliable support through its deformable geometry.
Solution Approach 2:
The item engagement arrangement combines resiliently deformable material (such as PVC) with rigid structural elements, creating a composite system that provides both flexibility for easy item insertion and rigid secure support to prevent furniture from falling over.
3Reliability
If resiliently deformable material sheet is used for item engagement, then secure grip is provided, but manufacturing precision is required
Solution Approach 1:
The resiliently deformable material sheet's properties are optimized by changing its material parameters (such as using PVC with specific elasticity) and geometric parameters (interconnecting slots with specific configurations), allowing it to provide secure grip through its inherent material characteristics rather than requiring precise manufacturing tolerances.
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 enables easy, infinite height adjustment with secure support, preventing furniture from tipping over, and allows for versatile use with different types of flooring and furniture configurations, ensuring stability and ease of operation.
Implementation Method 1
a height adjustment member located within the support member and extending upwardly therefrom, the height adjustment member being threadably engageable with the support member such that relative rotation of the height adjustment member causes raising or lowering thereof relative to the support member
Implementation Method 2
a sheet of a resiliently deformable material, with one or more openings in the sheet such that an item can be pushed through the opening or openings, and the resiliently deformable material will grip the item extending therethrough
Data Source
AI summary
A height adjustment unit 10 for raising the height of a chair or bed. The unit 10 comprises a ground engaging support member 12 with an internal thread 18. A height adjustment member 14 is engageable with the thread 18 to be rotatable to a required height. A sheet 56 of a resiliently deformable material extends across the top of the member 14 and has a pattern of openings therethrough to receive and grip the leg of a bed or chair.