Vehicle Seat Back Frame Layout for Common Support Wire Fit
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Solution Overview
Problem
Existing vehicle seat back frames face challenges in accommodating varying dimensions across different vehicle types, leading to inconsistent support wire positioning and potential robustness issues.
Innovation Solution
A back frame design featuring a frame with a shifted support wire end portion and a space within the frame to accommodate dimensional variations, using a common support wire across diverse vehicle types, with a C-shaped upper frame and wire holding portion to ensure secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a common support wire is used across different vehicle types, then manufacturing cost and part standardization are improved, but the frame dimension variations cause inconsistent support wire positioning
Solution Approach 1:
The support wire end portion is designed to be movable within a predetermined range along the extension line, allowing it to adapt to different frame dimensions while maintaining proper positioning. This dynamic adjustment capability resolves the contradiction between using a common support wire across vehicle types and maintaining consistent positioning precision.
Solution Approach 2:
The position of the support wire end portion can vary within a predetermined range to accommodate different frame dimensions across vehicle types. By allowing parameter variation within limits, the system maintains both standardization and positioning accuracy.
2Reliability
If the support wire end portion is positioned inside the frame, then structural robustness is improved, but space utilization inside the frame becomes constrained
Solution Approach 1:
The support wire end portion is positioned inside the frame in the width direction while extending in the longitudinal direction. This spatial arrangement maintains structural robustness by keeping the end portion within the frame boundaries while utilizing different spatial dimensions to avoid conflict with other components.
Data Source
AI summary
To provide a back frame of a vehicle seat. A back frame of the present disclosure includes a frame-shaped frame, a support wire for supporting a back of a sitter, and a wire holding portion provided on the frame and holding the support wire at a position shifted from an end portion in an extending direction of the support wire. The end portion in the extending direction of the support wire is located inside the frame, and a space in which the support wire can be disposed is provided on an extension line of the end portion in the extending direction inside the frame.