Convertible Juvenile Vehicle Seat Strap Passage Design
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Solution Overview
Problem
Existing convertible juvenile vehicle seats require complex and error-prone installation processes for both forward- and rear-facing positions due to different strap systems and unclear strap passage locations, which can lead to incorrect fastening and safety risks.
Innovation Solution
A vehicle seat design featuring a base and armchair with strategically positioned strap passages and indicators on the seat back, allowing the chest strap to circulate through all passages in both positions, and a single ventral strap passage on the base for simplified installation, ensuring correct usage of safety belts in both configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate strap systems are used for forward- and rear-facing positions, then the seat can be adapted to different positions, but the installation process becomes complex and error-prone
Solution Approach 1:
The patent applies universality by designing a single strap passage system that serves both forward-facing and rear-facing positions. The seat back includes strap passages that can accommodate the chest strap in either orientation, eliminating the need for separate strap systems for each position. This multi-functional design simplifies the installation process while maintaining adaptability to different seating orientations.
2Reliability
If multiple strap passages are provided for different positions, then the seat can be properly fastened in both orientations, but it becomes unclear which passages to use
Solution Approach 1:
The patent employs visual indicators (such as colored markings or symbols) near the strap passages to clearly indicate which passages should be used for forward-facing versus rear-facing positions. This visual guidance system helps users quickly identify the correct passages without confusion, improving ease of operation while ensuring reliable and correct fastening in both orientations.
3Strength
If the seat back structure is reinforced to support the head weight in rear-facing position, then the neck and back are protected, but the overall weight of the seat increases
Solution Approach 1:
The patent applies local quality by reinforcing only the specific areas of the seat back that need to support the child's head weight in rear-facing position, rather than uniformly strengthening the entire seat structure. This localized reinforcement approach provides the necessary strength and protection while minimizing the overall weight increase of the seat.
Data Source
AI summary
A vehicle seat for children includes a base and an armchair. The armchair includes a seat and a seat back. The seat back has in its upper portion at least one strap passage intended to receive a chest strap of a safety belt of a motor vehicle.