Seatback Retractor Routing for Universal Vehicle Compatibility
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Solution Overview
Problem
Conventional seat assemblies with integrated retractor systems are limited to specific vehicle configurations due to the placement of retractors on one side of the seatback, restricting flexibility and compatibility with different seat locations within a vehicle.
Innovation Solution
A seat assembly design that integrates a retractor mechanism and seatbelt system into the upper seatback and headrest support portions, allowing for flexible load management and compatibility with any seat location by routing the seatbelt webbing through a ring member and mounting bracket, eliminating the need for external attachment points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the retractor is placed on one side of the seatback, then the restraint system provides stable load management, but the seat assembly becomes specific to one side of the vehicle and loses configuration flexibility
Solution Approach 1:
The retractor mechanism is mounted to the center of the seatback frame rather than being side-specific, enabling the same seat assembly design to be universally installed on any side of the vehicle. This central mounting approach makes the restraint system adaptable to different vehicle configurations while maintaining stable load management through the retractor's anchoring to the seatback frame's center cross member.
2Shape
If the retractor is integrated into the seatback, then the seat assembly achieves a compact profile and optimized total package, but the design becomes complex with multiple integrated components
Solution Approach 1:
The retractor mechanism is positioned within the interior portion of the seat assembly, with its spool and webbing routed through the seatback frame structure. The webbing extends from the retractor, through a ring member at the headrest support portion, to the mounting bracket on the side member. This nesting arrangement integrates multiple components within the seat's existing structure, achieving a compact profile while systematically organizing the restraint system elements.
3Adaptability or versatility
If the webbing is routed through a ring member above the retractor, then the restraint system achieves flexible load management and rotational capability, but the webbing routing becomes more complex with multiple portions
Solution Approach 1:
A ring member is positioned at the headrest support portion of the seatback frame, serving as an intermediary element through which the webbing is routed. The webbing extends from the retractor mechanism, through this ring member, to the mounting bracket on the side member. This intermediary ring member enables flexible load management and allows the seat assembly to rotate between forward and rearward-facing positions while the webbing remains properly routed, despite the increased complexity of the routing path.
Data Source
AI summary
A seatback assembly includes a seatback frame having first and second side members that define a back support portion of the seatback frame. An upper frame member interconnects the first and second side members of the seatback frame to define a headrest support portion of the seatback frame. An upper mounting plate is coupled to the upper frame member. A retaining bar is coupled to the upper mounting plate. A retractor mechanism is operably coupled the back support portion of the seatback frame. A mounting bracket is operably coupled to the seatback frame. A seatbelt includes a webbing having a first portion which is operably coupled to and extending from the retractor mechanism towards the retaining bar within an interior of the seatback assembly. A second portion of the webbing extends from the retaining bar to the mounting bracket within the interior of the seatback assembly.