Pivoting Child Seat Assembly for Easier Vehicle Side Access
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Solution Overview
Problem
Existing child safety devices lack the ability to easily facilitate the loading and unloading of children in vehicles, particularly for different seating orientations and vehicle side installations, which can complicate caregiver access.
Innovation Solution
A child restraint system with a seat base and a juvenile seat that includes a multi-axis pivoting mechanism, allowing the juvenile seat to pivot between forward-facing, rearward-facing, and offset positions using a seat-pivot unit with pivot rods and a rod actuator, enabling caregivers to easily position the seat for child access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the juvenile seat is fixed in a single position on the seat base, then the device complexity is reduced, but the ease of operation for loading and unloading children deteriorates
Solution Approach 1:
The juvenile seat is designed with a pivot mechanism that allows it to rotate between a forward-facing position and a rearward-facing position. This dynamic capability enables caregivers to easily access the child from different directions (front or rear), significantly improving ease of loading and unloading without requiring complex external mechanisms
Solution Approach 2:
The seat system is divided into separable components: the juvenile seat, the seat base, and the pivot mechanism. This segmentation allows the pivot function to be isolated to a specific mechanism rather than requiring the entire seat structure to be complex, managing device complexity while enabling operational flexibility
2Ease of operation
If the juvenile seat is positioned centrally on the seat base, then the device complexity is reduced, but the ease of operation for side access deteriorates
Solution Approach 1:
The pivot mechanism is designed with an asymmetric configuration where the pivot axis is offset from the centerline of the seat base. This asymmetric positioning allows the juvenile seat to rotate into positions that are offset toward the vehicle door, providing caregivers with easier side access for loading and unloading children without requiring symmetric complexity on both sides
3Ease of operation
If the juvenile seat can pivot to offset positions, then the ease of operation for loading and unloading improves, but the device complexity increases
Solution Approach 1:
A dedicated pivot mechanism acts as an intermediary component between the juvenile seat and the seat base. This intermediate mechanism handles all the rotational movement and positioning complexity, allowing the juvenile seat itself to remain relatively simple while achieving the desired offset positioning capability for easier loading and unloading
Data Source
AI summary
A child restraint includes a seat base configured to be secured to a vehicle seat and a juvenile seat configured to mount to the seat base and defining a child-receiving space adapted to hold and secure a child for transportation in a vehicle. The juvenile seat is pivotable relative to the seat base between various arrangements.