Adjustable back restaurant highchair
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Solution Overview
Problem
Existing restaurant highchairs have a fixed seat back surface, which is often too far back for younger and smaller children, leading to slouching or falling during meals due to inadequate support.
Innovation Solution
An adjustable back restaurant highchair with a vertically-oriented backrest that can be moved horizontally forward or rearward via a plurality of pegs and tracks, allowing for one-handed adjustment to accommodate children of different sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed seat back surface is used in a highchair, then the structure is simple and stable, but it cannot accommodate children of different sizes and leads to slouching or falling
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed backrest into a movable one. The backrest can be adjusted horizontally along the side frames and vertically along the seat back, allowing it to adapt to different child sizes and positions. This dynamic adjustment capability resolves the contradiction by providing adaptability while maintaining structural simplicity through a straightforward mechanical adjustment mechanism.
Solution Approach 2:
The patent applies segmentation by dividing the backrest adjustment into multiple independent directions: horizontal adjustment along the side frames and vertical adjustment along the seat back. This segmentation allows for fine-tuned positioning to accommodate various child sizes and shapes, achieving high adaptability without requiring a complex multi-dimensional adjustment system.
2Reliability
If blankets or towels are stuffed behind the child's back to provide support, then immediate support is provided, but the items are prone to slipping out and are not always available
Solution Approach 1:
The patent applies the self-service principle by designing a backrest that is inherently capable of providing reliable support through its adjustable structure, eliminating the need for external items like blankets or towels. The self-adjusting mechanical design ensures consistent and reliable posture support without requiring additional accessories that may slip or be unavailable.
Solution Approach 2:
The dynamic backrest adjustment mechanism allows caregivers to easily reposition the backrest to provide optimal support for different children, replacing the unreliable static support of stuffed items with a dependable mechanical adjustment system that maintains ease of operation.
3Adaptability or versatility
If the backrest is fixed at a position suitable for older children, then it provides stable support for them, but it is too far back for younger and smaller children
Solution Approach 1:
The patent implements dynamics by enabling the backrest to move horizontally along the side frames and vertically along the seat back, allowing it to be positioned optimally for both younger/smaller children and older/larger children. This dynamic positioning capability achieves multi-age adaptability without introducing complex adjustment mechanisms.
Solution Approach 2:
The backrest adjustment mechanism is designed to serve multiple functions: horizontal adjustment for depth positioning and vertical adjustment for height positioning. This multi-functionality allows a single mechanism to accommodate different age groups and child sizes, achieving universality without increasing overall device complexity.
Data Source
AI summary
An adjustable back restaurant highchair is a restaurant style highchair with an adjustable back system. The back section of the highchair moves in its entirety, forward and backward along the seat section. Each corner of the seat back is provided with a pin that rides in four (4) corresponding adjustable tracks. Movement is enabled when a parent or care provider lifts the seat back up slightly, slides it forward or backward, and lowers it back into the tracks. Such adjustability accommodates children of all sizes, while ensuring that the smallest of them remain upright and cannot slide down. This eliminates the current practice of bracing the child up with towels, blankets, or coats, that are jammed in between their back and the seat support. The device remains stackable and keeps the simple design of its conventional counterpart.