Rotatable Car Seat Base With Debris-Protected Positioning
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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 usability.
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 to ensure secure attachment and easy adjustment, while preventing debris from interfering with rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional convertible car seats are designed to allow repositioning, then the seat can be adjusted between orientations, but frequent uninstallation and reinstallation is required which compromises convenience and may lead to improper installation
Solution Approach 1:
The patent applies the dynamics principle by enabling the seat shell to rotate dynamically relative to the base through a rotation mechanism. The seat shell can be selectively positioned between forward-facing and rearward-facing orientations by rotating it around a rotation axis, eliminating the need for complete uninstallation and reinstallation. This dynamic adjustment capability resolves the contradiction by providing both adaptability (multiple positions) and ease of operation (simple rotation).
Solution Approach 2:
The patent segments the car seat system into distinct components: a base and a seat shell that can be independently positioned. The rotation mechanism allows the seat shell to be decoupled from the base for rotation and then reconnected, enabling position changes without moving the entire assembly. This segmentation facilitates easy repositioning while maintaining secure attachment.
2Ease of operation
If the seat shell is made rotatable with respect to the base, then position changes are convenient, but debris may enter between the seat shell and base interfering with the rotation mechanism
Solution Approach 1:
The patent extracts the rotation mechanism from the interface between the seat shell and base, positioning it within the seat shell structure. By locating the rotation mechanism inside the seat shell rather than at the interface, the design prevents debris from entering and interfering with the rotation mechanism while maintaining the ability to rotate between positions.
Solution Approach 2:
The patent introduces a rotation mechanism as an intermediary component that mediates the interaction between the seat shell and base. This mechanism includes features such as a rotation axis and engagement structures that prevent debris contamination while enabling smooth rotation. The intermediary mechanism protects the critical rotational function from harmful external factors.
3Ease of operation
If the seat shell is rotatable without uninstallation, then user convenience is enhanced, but secure attachment must be maintained throughout rotation
Solution Approach 1:
The patent uses a dynamic attachment system where the seat shell remains connected to the base during rotation through engagement structures such as lugs and receptacles. These structures maintain secure attachment throughout the rotation motion, allowing position changes while ensuring reliability. The attachment is dynamic during rotation but secure at the engaged positions.
Solution Approach 2:
The patent incorporates locking mechanisms that engage beforehand to secure the seat shell to the base before rotation begins. These locking features ensure that the attachment is secure and reliable during the rotation process, preventing accidental detachment while allowing controlled position changes.
Data Source
AI summary
Disclosed herein is a rotatable 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. Additionally provided are a features that allow for the effective use of a rotatable car seat.