Rotatable Car Seat Base for Easy Facing Repositioning
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Solution Overview
Problem
Conventional convertible car seats require uninstalling and reinstalling to switch between rearward- and forward-facing positions, which is inconvenient and may lead to improper installation.
Innovation Solution
A car seat design with a base and a rotatable seat shell that can be positioned between multiple orientations, including rearward-facing, forward-facing, and intermediate positions, using a recline mechanism and locking features to ensure secure installation without interfering with vehicle tethers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional convertible car seats are designed to be uninstalled and reinstalled to switch between rearward- and forward-facing positions, then the seat can be repositioned, but the process becomes inconvenient and time-consuming
Solution Approach 1:
The patent combines the seat shell and base into a single integrated unit that rotates as one assembly. The seat shell includes a rotating mechanism that allows the entire seat to pivot between rearward-facing and forward-facing positions without separation, eliminating the need to uninstall and reinstall components.
Solution Approach 2:
The patent introduces a rotating mechanism with locking features that enable dynamic repositioning. The seat can be rotated to different orientations (rearward-facing, forward-facing, and intermediate positions) and locked into place, providing both mobility and stability during operation.
2Ease of operation
If the seat shell is made rotatable with respect to the base, then conversion between orientations is simplified, but the device complexity increases
Solution Approach 1:
The rotating mechanism is segmented into distinct functional components: a rotating plate attached to the seat shell, a base with a receiving portion, and locking features distributed at specific positions. This segmentation allows each component to perform its specific function while maintaining overall simplicity.
Solution Approach 2:
The locking features are designed to automatically engage with the base at predetermined positions during rotation. The mechanism includes self-aligning elements and spring-loaded locks that engage passively when the seat reaches specific orientations, reducing the need for complex control systems.
3Object-affected harmful factors
If the receiving portion is curved or concave to prevent debris entry, then debris protection is improved, but manufacturing precision requirements increase
Solution Approach 1:
The receiving portion is designed with a curved or concave geometry that forms a bowl-like shape. This curvature naturally directs debris away from the interface between the seat shell and base, preventing accumulation without requiring extremely tight manufacturing tolerances. The curved surface is robust and can be manufactured using standard molding techniques.
Data Source
AI summary
Disclosed herein is a car seat comprised of a base and a shell. The base includes a receiving portion and a backing portion. The seat shell includes a seat back and a seat bottom having a lower portion. The seat bottom is convex and interfaces with the receiving portion of the base. The seat shell is rotatable with respect to the base. The seat shell is selectively positionable between a plurality of orientations. The seat shell includes handles configured to independently unlock rotation of the seat shell with respect to the base. The lower portion of the seat shell includes an aperture configured to receive at least a portion of a projection of the base therethrough.