Vehicle Seat Pocket Edge Structure to Limit Opening Deformation
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Solution Overview
Problem
Existing seat covers with pocket tissue storing parts tend to have enlarged pocket openings when the surface member is folded, which compromises the appearance quality of the vehicle seat.
Innovation Solution
A seat cover design featuring a bag part sewn on the folded portion of the surface member, with a bead part and core member that extend beyond the pocket opening edges, where the bead part is interposed between the bag part and the folded surface member, and the core member is inserted into the bead part to prevent the pocket opening from enlarging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the surface member is folded toward the back surface side along the edge of the pocket opening to enhance the strength of the pocket tissue storing part, then the strength of the pocket edge is improved, but the pocket opening is enlarged and always opened, which impairs the appearance quality of the vehicle seat
Solution Approach 1:
A bead part is introduced as an intermediary element between the folded surface member and the bag part. The bead part includes a protruding portion that extends into the pocket opening and a pair of side portions that extend along the longitudinal edges of the pocket opening. This bead part acts as a mediator that maintains the folded state of the surface member while preventing excessive opening of the pocket, thus resolving the contradiction between edge strength and appearance quality
Solution Approach 2:
The bead part changes the geometric parameters of the pocket structure by adding a protruding portion that extends into the pocket opening and side portions that extend beyond the lateral edges. This parameter change creates a mechanical constraint that limits the opening degree of the pocket, allowing the folded surface member to maintain strength while preserving appearance quality
Data Source
AI summary
A seat cover includes: a surface member; and a pocket including: a bag part arranged on a back surface side of the surface member and sewn on a folded portion of the surface member folded toward the back surface side along an edge of a pocket opening; a bead part interposed between the bag part and the folded portion extending along at least one of a pair of longitudinal edges of the pocket opening, sewn on the folded portion and the bag part, and arranged to protruding into the pocket opening; and a core member inserted into the bead part, wherein: the bead part and the core member respectively include extension portions extending beyond a pair of lateral edges of the pocket opening in a longitudinal direction of the pocket opening; and the extension portions of the bead part and the core member are fixed to each other.