Two-Axis Pivoting Footrest Chassis for Compact Retraction
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Solution Overview
Problem
Existing footrest chassis require significant space under seating furniture during retraction and extension, and often uncomfortably press against users' calves when extended due to the design of the footrest mechanism.
Innovation Solution
A footrest chassis with a two-part design that utilizes pivoting movements about two axes, allowing for a space-saving retraction and extension mechanism, where the second region pivots automatically to avoid calf contact during extension, and incorporates a support surface with a spring mechanism to minimize risk of injury or damage during folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the footrest chassis is extended to increase distance between seating surface and footrest end, then the user comfort is improved, but the lower end of the footrest presses against the user's calves which is uncomfortable
Solution Approach 1:
The footrest chassis is divided into a first region and a second region that can pivot independently about different axes. The second region pivots about a second pivot axis perpendicular to the first pivot axis, allowing the footrest to extend outward without the lower end pressing against the user's calves.
2Adaptability or versatility
If the footrest chassis is designed to extend and retract, then the user can choose to place feet on the footrest, but a lot of space is required below the seating surface during folding
Solution Approach 1:
The footrest chassis utilizes a two-axis pivoting mechanism where the second region pivots about a second pivot axis that is perpendicular to the first pivot axis. This dimensional change allows the footrest to extend horizontally outward rather than requiring vertical space below the seating surface, significantly reducing the space required during retraction and extension.
3Volume of stationary object
If the footrest chassis uses a two-part design with dual pivoting, then space requirements are reduced and comfort is improved, but the device complexity increases
Solution Approach 1:
The footrest chassis is segmented into a first region and a second region connected by a connecting means. The first region pivots about a first pivot axis defined by attachment means to the seating furniture chassis, while the second region pivots about a second pivot axis defined by the connecting means. This segmentation enables independent movement of each region, achieving space-saving extension without excessive complexity.
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 a compact footrest chassis that reduces space requirements and enhances user comfort by allowing the footrest to extend without pressing against the user's calves, while minimizing the risk of injury or damage during operation.
Implementation Method 1
incorporates a support surface with a spring mechanism to minimize risk of injury or damage during folding
Data Source
AI summary
A footrest chassis for attachment to a seating furniture chassis includes a first region, a second region, at least one attachment mechanism for securing the first region to the seating furniture chassis, and a connecting mechanism, wherein the first region and the second region can be pivoted about a first pivot axis defined by the attachment mechanism in the mounted state on the seating furniture chassis, and wherein the second region is connected to the first region by the connecting mechanism. During a pivoting movement of the first region and the second region about the first pivot axis, an additional pivoting movement of the second region takes place about a second pivot axis that is defined by the connecting mechanism.