Vehicle Seat Link Bracket Structure for Rear-Collision Tilt Prevention
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Solution Overview
Problem
Conventional vehicle seats face issues with rearward tilting during collisions, necessitating additional stop elements that increase weight and complexity.
Innovation Solution
A vehicle seat design featuring a link mechanism with attachment brackets integrally formed with protrusions that contact the cushion frame to prevent rearward tilting, eliminating the need for separate stop elements and reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stop element is added to prevent rearward tilting of the seat during collision, then the safety and stability of the seat is improved, but the weight of the seat increases
Solution Approach 1:
The invention combines the stop function with the existing attachment bracket by integrally forming a protrusion on the bracket. This merges the support function and the stop function into a single component, preventing rearward tilting during collision without adding separate stop elements, thus maintaining seat stability while avoiding weight increase from additional components
Solution Approach 2:
The attachment bracket is designed to serve multiple functions: it supports the cushion frame during normal operation and simultaneously acts as a stop mechanism during collision through the integrally formed protrusion. This multi-functionality eliminates the need for dedicated stop elements, resolving the contradiction between safety and weight
2Reliability
If a stop element is added to prevent rearward tilting of the seat during collision, then the safety and stability of the seat is improved, but the structural complexity of the seat increases
Solution Approach 1:
The stop function is merged with the attachment bracket through integral formation of the protrusion. This eliminates the need for separate stop elements and their associated mounting structures, thereby improving seat stability during collision while reducing structural complexity by consolidating components
Solution Approach 2:
The attachment bracket is designed to serve multiple functions: it supports the cushion frame during normal operation and simultaneously acts as a stop mechanism during collision through the integrally formed protrusion. This multi-functionality eliminates the need for dedicated stop elements, resolving the contradiction between safety and structural complexity
Data Source
AI summary
Provided is a vehicle seat prevented from rearward tilting thereof at a rear collision and prevented from an increase in the seat weight. The vehicle seat includes a link mechanism configured to adjust a height of a seat cushion. The link mechanism includes: an attachment bracket to be attached to a floor of a vehicle compartment; link arms linking a cushion frame and the attachment bracket to each other in such a manner that the cushion frame is shiftable between a first position and a second position located downward and vehicular rearward of the first position in parallel to the attachment bracket; and a protrusion integrally formed with the attachment bracket and protruding upward from an upper surface of the attachment bracket, and having a contact surface that comes into contact with a bumping section of the cushion frame thereon when a vehicle is involved in the rear collision.