Vehicle Seat Airflow Structure With Recessed Adhesive Control
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Solution Overview
Problem
The existing vehicle seat air conditioning systems face issues with adhesive agent distribution, where variations in the recessed part shape during manufacturing can lead to excessive or insufficient adhesive, potentially blocking air flow or destabilizing the adhesion of the lid member to the cushion member.
Innovation Solution
A vehicle seat structure with a flow-path-forming member featuring an adhesion surface and adjacent recessed parts that surround the flow path opening, allowing excess adhesive to be released into the recessed parts, ensuring stable adhesion without blocking air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive agent is injected to the recessed part formed in the cushion member, then the lid member can be adhesively fixed to the cushion member, but the sectional shape of the recessed part may change due to manufacturing variations, causing excessive or insufficient adhesive distribution
Solution Approach 1:
The flow path-forming member is designed with a specific geometric structure where the flow path cross-section is larger than the adhesion surface cross-section. This creates a localized adhesive storage region that ensures uniform adhesive distribution regardless of manufacturing variations in the recessed part shape.
Solution Approach 2:
The adhesive is applied to the adhesion surface before the covering material is attached, allowing the adhesive to be pre-distributed in a controlled manner. The geometric design ensures that the adhesive is confined to the appropriate area, preventing it from entering the flow path and blocking air circulation.
2Reliability
If excessive adhesive agent is applied, then stable adhesion can be achieved, but the adhesive may flow into the flow path and block air flow
Solution Approach 1:
The flow path-forming member features a geometric design where the flow path cross-sectional area is larger than the adhesion surface cross-sectional area. This creates a natural barrier that confines the adhesive to the adhesion surface region, preventing it from entering the flow path even when excessive adhesive is applied, thus maintaining both adhesion stability and unobstructed air flow.
3Reliability
If the recessed part depth or width varies due to manufacturing conditions, then the adhesive agent distribution becomes uneven, but the adhesion must remain stable
Solution Approach 1:
The flow path-forming member is designed with a geometric structure where the flow path cross-section is larger than the adhesion surface cross-section. This design ensures that adhesive is distributed uniformly across the adhesion surface regardless of variations in recessed part dimensions, as the adhesive is confined by the geometric boundaries rather than relying on the recessed part shape for distribution control.
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 design allows for stable adhesive fixation of the covering material to the flow-path-forming member, preventing air flow obstruction and maintaining adhesion stability even with variations in adhesive application.
Implementation Method 1
a center in a cross section of the adhesion layer in a width direction is positioned between both end parts of the adhesion surface in a width direction
Data Source
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AI summary
[Problem to be Solved] To provide a vehicle seat structure and a manufacturing method thereof capable of adhesively fixing a covering material to a flow-path-forming member in a stable manner without blocking the flow of air in a flow path. [Solution] A vehicle seat 1 includes: a flow-path-forming member 52 that forms a flow path 521 that circulates air between a seating surface and a blower fan 34; and a covering material 53 that adheres to the flow-path-forming member 52 and covers an opening part of the flow path 521. The flow-path-forming member 52 has: an adhesion surface 522 to which the covering material 53 adheres via an adhesion layer 54 formed by an adhesive agent; and a first recessed part 523 positioned between the flow path 521 and the adhesion surface 522 and disposed to be adjacent to the adhesion surface 522. The adhesion surface 522 and the first recessed part 523 extend so as to surround the opening part of the flow path 521, and a center P1 in a cross section of the adhesion layer 54 in a width direction is positioned between both ends of the adhesion surface 522 in a width direction.