Vehicle Seat Cushion Air Passage Alignment Under Pad Displacement
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Solution Overview
Problem
Conveyance seats with divided pad members experience displacement issues when used or deformed, leading to misalignment of air passage holes and reduced airflow efficiency.
Innovation Solution
A conveyance seat design featuring a pad member composed of overlapping first and second pad pieces with air passage holes, where a position holding member, such as a pull-in member, secures the second pad piece to the first, ensuring aligned air passage holes and maintaining airflow through the pad member, even when the seat length is adjusted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pad member is divided into multiple pad pieces with air passage holes, then the airflow can be improved, but the pad pieces may displace and misalign when the seat is used
Solution Approach 1:
The pad member is divided into multiple pad pieces (first pad piece and second pad piece) with air passage holes to improve airflow distribution. This segmentation allows better air circulation while maintaining structural flexibility.
Solution Approach 2:
A position holding member is introduced as an intermediary element between the first and second pad pieces. This mediator prevents displacement and maintains alignment of the air passage holes, ensuring reliable airflow while allowing the segmented structure to function.
2Adaptability or versatility
If the pad member is made deformable to change seat length, then the adaptability is improved, but the pad pieces become more prone to displacement
Solution Approach 1:
The pad member is designed to be deformable, allowing the seat length to be adjusted by deforming the pad member. This dynamic capability enables the seat to adapt to different user requirements while maintaining functionality.
Solution Approach 2:
The position holding member serves as a mediator that maintains the relative position of pad pieces even during deformation. This ensures that air passage holes remain aligned throughout the deformation process, preserving manufacturing precision while enabling adaptability.
3Reliability
If a position holding member is added to prevent pad piece displacement, then the alignment stability is improved, but the device complexity increases
Solution Approach 1:
A position holding member is introduced as a simple intermediary element that effectively prevents displacement between pad pieces. This single component maintains alignment stability without requiring complex mechanisms or systems.
Solution Approach 2:
The position holding member is designed to automatically maintain the relative position of pad pieces through its own structural properties, without requiring external control systems or additional actuation mechanisms. The member self-regulates the alignment.
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 design effectively suppresses displacement between pad pieces, ensuring smooth airflow and easy duct installation without interference, while allowing for seat length adjustment without compromising airflow efficiency.
Implementation Method 1
a blower that sends air into the pad member (10)
Data Source
AI summary
A seat cushion S1 of a vehicle seat S includes: a pad member 10 including a base pad 11 and an intermediate pad 12 overlapped on the base pad 11; a fan 31 provided so that air passes through the pad member 10; air passage holes 11h and 12h respectively formed in the base pad 11 and the intermediate pad 12; and a pull-in hole provided at a position different from the air passage hole 12h in the intermediate pad 12 and a position of the intermediate pad 12 with respect to the base pad 11 is held in such a manner that a skin pull-in trim cord enters the pull-in hole while the intermediate pad 12 is overlapped on the base pad 11 so that the air passage holes 11h and 12h communicate with each other.