Radial-String Vehicle Seat Backrest for Steering and Turning
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Solution Overview
Problem
Existing vehicle seats hinder steering operability and posture maintenance during turning due to their mesh-shaped configurations, which inhibit upper body movement and fail to consider lateral acceleration effects.
Innovation Solution
A vehicle seat design featuring a frame-shaped seat backrest with radially arranged first string portions that allow pivotal movement of the upper body, including a connection member positioned higher than the vertical center for enhanced steering and a second string portion for smoother displacement, and a pivotally movable seat with a longitudinal pivot axis passing near the waist for improved posture maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mesh-shaped net is used to support the upper body, then comfort is improved, but steering operability deteriorates due to inhibition of upper body movement
Solution Approach 1:
The net is segmented into radially arranged first string portions that can independently deform, allowing localized movement of the upper body while maintaining overall support. This segmentation enables the occupant to pivot the upper body for steering operations without the entire mesh structure restraining movement.
Solution Approach 2:
The net structure is designed to be dynamically deformable rather than rigidly supportive. The radial string portions can change configuration in response to upper body movement, transitioning from a static support structure to a dynamic system that adapts to steering operations while maintaining comfort.
2Reliability
If the seat backrest uses a conventional mesh configuration, then support is provided, but posture maintaining capability deteriorates during turning due to lateral acceleration
Solution Approach 1:
Different regions of the net have different functional properties. The radially arranged first string portions are positioned to specifically support the scapula region, providing localized adaptive support that maintains posture during turning while allowing other areas to provide general upper body support.
Solution Approach 2:
The net structure changes its mechanical parameters (rigidity, flexibility) in response to applied loads. During turning with lateral acceleration, the radial string portions deform to accommodate the scapula movement, dynamically adjusting the support characteristics to maintain posture stability.
Data Source
AI summary
To improve steering operability in a driver's seat, and to improve posture maintaining capability at the time of turning in the driver's seat and a seat other than the driver's seat. In a vehicle seat including a seat, a seat backrest, and a headrest, the seat backrest has a seat backrest frame formed in a frame shape and a net disposed to stretch in the seat backrest frame. The net has a first string portion arranged radially.