Car Seat Side Shell Structure for Strength Without Space Loss
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Solution Overview
Problem
Integrated car seats face challenges in achieving a space-saving design while maintaining strength and adaptability to high forces, as existing designs require stronger components and occupy more space due to inefficient use of material.
Innovation Solution
The car seat features trough-shaped side parts with a shell construction that accommodates additional components and provides rigidity through a perimeter profile rim, allowing for better force absorption and reduced lateral buckling, while also enabling the integration of discrete parts like electric motors within the side parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the side parts are configured as double-walled closed boxes to achieve high strength, then the strength and rigidity are improved, but the space available for component parts is reduced
Solution Approach 1:
The side part is divided into a shell construction with a bottom and a separate perimeter profile rim. This segmentation allows the interior space to be utilized for component parts while the perimeter rim provides the necessary structural strength and rigidity to resist lateral buckling during accidents.
Solution Approach 2:
Component parts such as electric motors and manual drive units are nested within the interior space of the shell construction. This nesting approach allows efficient use of the available volume while maintaining the structural integrity provided by the shell and perimeter rim.
2Force
If stronger component parts are used to meet stringent mechanical requirements, then the force absorption capability is improved, but the space occupation and manufacturing complexity increase
Solution Approach 1:
The shell construction and perimeter profile rim are merged into an integrated side part structure. This combining of structural elements achieves the required force absorption capability while simplifying manufacturing compared to assembling multiple separate reinforcement components.
Solution Approach 2:
The shell construction provides a lightweight yet strong structure that can absorb and distribute forces effectively. The shell design allows for sufficient strength without requiring thick-walled box constructions, thereby reducing manufacturing complexity and material usage.
3Reliability
If the side parts are made thicker and stronger to absorb accident forces, then the reliability is improved, but the space for accommodating component parts is reduced
Solution Approach 1:
The side part is segmented into a shell construction and a separate perimeter profile rim. This segmentation allows the perimeter rim to provide the necessary structural strength for reliability while the shell interior remains available for accommodating component parts.
Solution Approach 2:
Instead of increasing thickness in one dimension, the solution uses a three-dimensional shell construction with a perimeter rim that distributes strength along the perimeter. This dimensional approach maintains reliability while preserving interior volume for component parts.
Data Source
AI summary
In the integrated car seat with a lengthwise adjustment mechanism having two pairs of rails, with a bottom support frame having two front pivotal supports, two rear pivotal supports and two side parts carried on the pivotal supports, with a seat back connected to the side parts by a seat back joint and with a seat belt buckle, the side part is configured in the shape of a shell on the seat side that is turned away from the buckle, the side part having a bottom and a perimeter profile rim. The side part turned away from the buckle is open toward the outside, the outside preferably meaning the outboard side of the seat.