Rotatable Car Seat Base With Belt Path for Easy Repositioning
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Solution Overview
Problem
Conventional convertible car seats require frequent uninstallation and reinstallation to change the orientation or recline position, which is inconvenient and may lead to improper installation, compromising safety and ease of use.
Innovation Solution
A car seat design featuring a base and a rotatable seat shell that can be positioned between rearward-facing, forward-facing, and intermediate positions without needing to uninstall, using a recline mechanism and locking system that allows for secure attachment using vehicle safety belts or the LATCH system, ensuring easy rotation and recline without interfering with the belt path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional convertible car seats are designed to be uninstalled and reinstalled to reposition the seat, then the seat can be repositioned between orientations and recline positions, but the process becomes inconvenient and time-consuming
Solution Approach 1:
The patent implements a rotatable seat shell that can dynamically change orientation between rearward-facing and forward-facing positions, and adjust recline angles, all while remaining installed in the base. This dynamic adjustment mechanism eliminates the need for uninstallation and reinstallation, resolving the contradiction between adaptability and time loss.
Solution Approach 2:
The car seat is divided into separable functional components: a base that remains installed and a seat shell that can rotate and recline independently. This segmentation allows the seat shell to be repositioned without moving the entire assembled car seat, enabling orientation changes without full uninstallation.
2Ease of operation
If the seat shell is made rotatable to enable easy repositioning, then convenience is improved, but the risk of improper installation and safety issues increases
Solution Approach 1:
The patent incorporates locking mechanisms and alignment features that provide feedback to ensure the seat shell is properly positioned and secured in the base. The system includes detents and engagement features that confirm correct installation, preventing improper positioning while maintaining ease of operation.
Solution Approach 2:
The base includes pre-configured receiving portions and alignment guides that prepare the installation path before the seat shell is attached. The belt path is pre-routed and the receiving portions are shaped to guide proper positioning, ensuring safety is built into the design before the user completes the attachment.
3Adaptability or versatility
If the receiving portion and seat bottom interface is designed to allow rotation, then repositioning is enabled, but debris can enter and interfere with rotation
Solution Approach 1:
The receiving portion of the base and the corresponding seat bottom interface are designed with curved, dome-shaped surfaces that guide debris away from the rotation interface. The curved geometry prevents debris accumulation in the rotation path, maintaining smooth rotational movement while enabling full repositioning capability.
4Ease of operation
If the belt path is positioned to accommodate rotation and recline movements, then ease of operation is improved, but the complexity of the base structure increases
Solution Approach 1:
The base is designed with a universal belt path that serves multiple functions: it accommodates rotation of the seat shell, supports recline movements, and maintains proper routing for both rearward-facing and forward-facing orientations. This multi-functional belt path design enables ease of operation without requiring separate routing systems for different positions.
Data Source
AI summary
Disclosed herein is a rotatable car seat comprised of a base and a seat shell, where the seat shell is rotatable with respect to the base. The base includes a receiving portion having a belt lock-off arm pivotally connected and moveable relative to the base. The base also includes a belt path extending between a first side of the base and a second side of the base such that the bel lock-off arm is able to engage a belt extending across the belt path. The seat shell is selectively positionable between a plurality of orientations.