Vehicle Seat Webbing Mounting Section for Airbag Deployment Noise Reduction
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Solution Overview
Problem
Existing vehicle seat designs with deployment force concentrating covers experience abnormal noise and webbing damage due to repetitive contact and separation between the seat frame and webbing ends, which are not effectively mounted.
Innovation Solution
A vehicle seat configuration with a mounting section that securely attaches the webbing ends to the seat frame, using engagement and grip portions to inhibit contact with the frame's edge-shaped portions, thereby preventing noise and damage, and allowing for minimal obstruction of occupant sinking during collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the webbing ends are not mounted to the seat frame, then the seat structure is simpler, but abnormal noise and webbing damage occur due to repetitive contact and separation
Solution Approach 1:
The mounting section is provided in advance on the seat frame to secure the webbing ends before collision occurs. This preliminary mounting prevents the webbing ends from contacting and separating from the seat frame during normal operation, thereby eliminating the source of abnormal noise and preventing webbing damage while maintaining structural simplicity.
2Reliability
If the webbing ends are mounted directly to the seat frame, then webbing durability improves, but abnormal noise is generated due to contact with the frame
Solution Approach 1:
The mounting section acts as an intermediary component between the webbing ends and the seat frame. It provides a dedicated engagement interface that secures the webbing ends to the frame while preventing direct contact between the webbing and the frame's edge-shaped portions, thereby eliminating abnormal noise generation during vehicle operation.
3Reliability
If the mounting section is provided to secure webbing ends, then webbing damage is prevented, but obstruction of occupant sinking may occur during collisions
Solution Approach 1:
The mounting section is strategically positioned and designed with specific local characteristics - it is provided at locations on the seat frame where it secures the webbing ends without protruding into the occupant's sinking path. The section's geometry and placement are optimized to provide secure mounting while maintaining clear pathways for occupant movement during collision deployment.
Data Source
AI summary
A vehicle seat includes: a seat frame; a seat cover provided with a rupture portion; an airbag disposed in the seat; a pair of webbings provided so as to surround the airbag on a back surface side of the seat cover, one end sides of the webbings being mounted to the rupture portion; and a mounting section mounting the other end sides of the webbings to the seat frame. In a vehicle collision, the airbag is protruded out of the seat by rupturing and opening the rupture portion. The mounting section is provided at a place where a body of the seat frame is disposed. When the airbag is uninflated, the mounting section holds the other ends of the webbings apart from the body of the seat frame, and an inhibition portion in the mounting section inhibits contact between an edge-shaped portion formed in the body and the webbings.