Vehicle Seat Pad Vent Layout to Prevent Air Passage Clogging
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Solution Overview
Problem
Existing vehicle seat designs with air passages in the pad often experience clogging due to sitting pressure, compromising both ventilation and support quality.
Innovation Solution
The air passage is strategically positioned to avoid high-load areas, such as the waist or hip, using a support body with a lumbar plate and elastic springs to distribute pressure, allowing for effective ventilation without compromising support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air passages are provided in the installation area of supporting springs to distribute air broadly, then ventilation function is improved, but air passages may be clogged by squashing of the pad due to sitting pressure
Solution Approach 1:
The pad is designed with differentiated local properties: a high-load portion at the center for supporting concentrated body pressure, and a low-load peripheral portion where air passages are formed. This local quality differentiation allows the high-load area to be squashed for comfort while the low-load area maintains open air passages for ventilation, resolving the contradiction between ventilation function and air passage clogging.
2Productivity
If air passages are formed in the center area of the pad for effective air distribution, then ventilation efficiency is improved, but the air passages are more likely to be squashed by sitting pressure
Solution Approach 1:
The patent employs asymmetric design by concentrating the high-load supporting function in the center high-load portion while placing air passages in the peripheral low-load portion. This asymmetric functional distribution ensures that the center area handles pressure loading while the periphery handles air distribution, preventing air passage squashing while maintaining ventilation efficiency.
3Reliability
If the pad structure is reinforced to prevent air passage squashing, then air passage reliability is improved, but comfortable supporting property during sitting is damaged
Solution Approach 1:
The pad is segmented into functionally distinct regions: a central high-load portion for pressure support and peripheral low-load portions for air passage formation. This segmentation allows each region to be optimized for its specific function without compromising the other, enabling the high-load area to deform comfortably while the low-load area maintains structural integrity for air passage openness.
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
This configuration prevents air passage clogging while maintaining superior support and ventilation, enhancing the overall riding experience by ensuring effective air distribution and comfort.
Implementation Method 1
a supporting spring which is configured to elastically support, from a rear side, a high-load portion of a center of the pad on which a body pressure of an occupant is concentrated
Data Source
AI summary
There is provided a vehicle seat having an air passage formed to extend in an in-plane direction in a pad for supporting a body of an occupant. The vehicle seat includes a seat frame which supports a peripheral portion of the pad from a rear side thereof; and a support body which is supported by the seat frame and is configured to elastically support, from a rear side, a high-load portion of a center of the pad on which a body pressure of the occupant is concentrated, wherein the air passage is formed at a position avoiding the high-load portion of the pad supported by the support body.