Conveyance Seat Cross-Linking Frame for Widthwise Wire Fastening
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Solution Overview
Problem
The assemblability of wire members with respect to seat frames in conveyance seats is low due to the requirement of inserting end portions into support holes, making the assembly process inefficient.
Innovation Solution
A conveyance seat design featuring a wire receiving portion on the cross-linking frame that allows the wire member to be fastened in the seat width direction, with a configuration that includes a first part close to the occupant support surface and a second part further away, enabling easy assembly by sliding the wire member into place, and allowing the pressure receiving member to be attached separately before or after fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wire member is connected by inserting the end portion into a support hole formed in the cross-linking frame, then the connection is secure, but the assemblability of the wire member with respect to the seat frame is low
Solution Approach 1:
The wire receiving portion is divided into two segments: a first part close to the occupant support surface and a second part far from the occupant support surface. The first part has a shorter width direction dimension than the second part, allowing the wire member to be inserted and positioned sequentially, improving assemblability while maintaining secure connection
Solution Approach 2:
The wire receiving portion acts as an intermediary structure between the wire member and the cross-linking frame. It provides a dedicated receiving space that guides and secures the wire member without requiring direct insertion into the cross-linking frame, thereby improving ease of assembly while ensuring reliable connection
2Ease of manufacture
If the wire member is fastened to the wire receiving portion in the width direction of the conveyance seat, then the assembly process is simplified, but the structural complexity of the cross-linking frame increases
Solution Approach 1:
The wire receiving portion is nested within the cross-linking frame structure, with the first part and second part forming a nested configuration where the first part is positioned within the space defined by the second part. This nested structure allows the wire member to be fastened in the width direction while minimizing the increase in overall structural complexity
Data Source
AI summary
Provided is a conveyance seat with which the assemblability of a wire member with respect to a seat frame can be improved. A conveyance seat includes a seat frame. The seat frame has: a pair of side frames arranged in side portions of the conveyance seat; and a cross-linking frame cross-linking the pair of side frames, a wire member is disposed between the pair of side frames, the cross-linking frame has a wire receiving portion receiving the wire member, and the wire member is fastened to the wire receiving portion.