Adjustable Headrest and Backrest Assembly for Child Car Seats
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Solution Overview
Problem
Conventional convertible car seats lack adjustability in headrests and backrests, failing to accommodate a wide range of ages and sizes, particularly infants and children, which can lead to suboptimal seating positions affecting airway alignment and digestion.
Innovation Solution
A car seat design featuring an adjustable assembly with a headrest and backrest that can slide relative to the shell, allowing for automatic tilting and angular adjustments to optimize the seating position, ensuring proper alignment and comfort for occupants of varying ages and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional convertible car seats are designed as solid single-piece structure with fixed included angle, then manufacturing simplicity is improved, but adaptability to different ages and sizes deteriorates
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed, rigid structure of conventional car seats into a dynamic, adjustable system. The shell is divided into multiple segments (seat portion, back portion, headrest portion) that can move relative to each other through defined interfaces, allowing the included angle and configuration to change adaptively to accommodate occupants of different ages and sizes while maintaining manufacturing feasibility through modular design
2Device complexity
If headrest and backrest are fixed in position, then structural simplicity is improved, but comfort and safety for varying occupant sizes deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the car seat shell into distinct, movable segments including the seat portion, back portion, and headrest portion. Each segment can be independently positioned and adjusted relative to the others through defined interfaces, enabling the structure to adapt to different occupant sizes and preferences while maintaining reasonable structural simplicity through the modular architecture
3Ease of manufacture
If the included angle between seating surface and seat back is fixed, then manufacturing ease is improved, but adaptability to different occupants deteriorates
Solution Approach 1:
The patent implements dynamics by enabling the included angle between the seating surface and seat back to be dynamically adjustable rather than fixed. The back portion can be positioned at different angles relative to the seat portion through the defined interface, allowing optimization of the seating position for different occupants while maintaining manufacturing ease through the use of standardized adjustment mechanisms
Data Source
AI summary
Disclosed herein is a child car seat comprised of a shell and an adjustable assembly including a headrest member and a backrest member mounted for sliding movement relative to the shell.