Bed Base Support Lever Design for Controlled Footrest Pivoting
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Solution Overview
Problem
Existing bed frames with pivoting footrests face challenges in manufacturing complexity and reliability, as well as uncontrolled movements of support components, limiting access to storage space due to inefficient design.
Innovation Solution
A bed frame design featuring a rotation-inhibited pivotable support lever with a friction brake and a detachable pin mechanism that ensures the support lever remains engaged with the footrest, allowing for easy manual pivoting and preventing uncontrolled movements, thus enhancing manufacturing ease and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If support tabs are hinged to side bars with sliding surfaces to enable uncontrolled movements during pivoting, then the footrest can be manually returned after motor-driven positioning, but the support tabs perform uncontrolled movements and may not slide into the required position, reducing reliability
Solution Approach 1:
A guide element with a guide surface is introduced as an intermediary component between the support tab and the frame bar. The guide surface cooperates with the sliding surface to control and direct the movement of the support tab during pivoting, ensuring it slides into the correct position while still allowing manual return operation.
2Ease of operation
If support bearings are attached to frame bars with sliding surfaces to support footrest pivoting, then the footrest can be manually returned, but the manufacturing effort to manufacture and assemble support bearings becomes considerable
Solution Approach 1:
The complex support bearing component is extracted and replaced with simpler elements: a support tab with a sliding surface and a corresponding guide element with a guide surface. This extraction eliminates the need for manufactured support bearings with sliding surfaces, significantly reducing manufacturing effort while maintaining the manual return capability.
3Volume of stationary object
If the footrest is raised to maximum position by motor drive, then storage space is optimized, but access opening remains small, limiting usage requirements
Solution Approach 1:
The footrest is designed with dynamic positioning capability, allowing it to be raised to maximum position for storage optimization and then manually lowered to create larger access openings. The support tab and guide element enable controlled movement between these positions, providing adaptability for different usage requirements.
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 allows for reliable and cost-effective production of bed frames with improved access to storage space by ensuring the support lever remains engaged, preventing uncontrolled movements and facilitating free access when the footrest is pivoted manually.
Implementation Method 1
a friction or silicone brake is provided to prevent the support lever from rotating
Data Source
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AI summary
Bed base with a rigid frame (1) having two frame bars (2) arranged parallel and spaced apart from one another and a thigh support (3) pivotably connected thereto, to which a footrest (4) is articulated, wherein in the area assigned to the footrest (4) the Frame bars (2) each have an anti-rotation pivotable support lever (10) articulated, the free end of which is releasably held thereon counter to the pivoting direction (A) of the footrest (4).