Dynamic Cradle Backrest Structure for Adaptive Child Support
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Solution Overview
Problem
Existing child containment structures, such as cradles and pushchairs, fail to accommodate children of varying sizes comfortably, as they are designed for average dimensions, leading to suboptimal backrest inclination and depth, and rely on straps that can strain seams and increase load on contact points.
Innovation Solution
A containing structure with a non-extensible wall, an extensible wall connected to the backrest, and a window cut in the non-extensible wall to allow the backrest to pivot, along with T-shaped safety means and padded pockets to prevent direct contact with buckles, enabling self-adjustment of the backrest inclination and improved support for the child.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rigid backrest is used in a containing structure designed for average child dimensions, then the structure provides stable support for average-sized children, but it fails to accommodate children of varying sizes with optimal backrest inclination
Solution Approach 1:
The backrest is made dynamic by allowing it to pivot relative to the non-extensible wall through a window opening. The extensible material connected to the backrest enables automatic adjustment of backrest inclination according to child weight, transforming a static structure into a dynamic adaptive system without complex mechanical controls
Solution Approach 2:
The backrest inclination angle changes automatically based on child weight. Heavier children cause greater extension of the extensible material, which increases the backrest inclination angle to provide optimal support, while lighter children maintain a smaller angle
2Adaptability or versatility
If a rear strap is added to adjust bag depth for different child sizes, then the containing structure can accommodate varying child dimensions, but the strap increases load on seams and contact points
Solution Approach 1:
The harmful rear strap is completely removed from the design. Instead, the invention uses an extensible material integrated into the wall structure that automatically adjusts bag depth and backrest inclination without requiring external straps, thereby eliminating the strength problem at strap attachment points
Solution Approach 2:
The extensible material performs the adjustment function automatically based on child weight, eliminating the need for manual strap adjustment and the associated structural weaknesses. The system serves itself by using the child's own weight to trigger the appropriate configuration
3Adaptability or versatility
If the containing structure is designed for the largest child to accommodate all sizes, then all children can fit, but average-sized children receive suboptimal support and comfort
Solution Approach 1:
The structure dynamically adapts to each child's weight, providing optimal support for both small and large children. The extensible material and pivoting backrest automatically adjust the configuration to match the child's dimensions, eliminating the compromise required by static designs
Solution Approach 2:
The backrest inclination angle and bag depth parameters automatically change according to child weight, ensuring that each child receives optimal support rather than a one-size-fits-all configuration designed for the largest user
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for optimal backrest inclination and support regardless of the child's weight, reducing discomfort and strain on seams, while maintaining safety and comfort across different child sizes without the need for additional straps.
Implementation Method 1
a wall made of extensible material elastically connected to the edges of said window
Data Source
AI summary
A frame of a cradle for children, has a containing structure including a wall of flexible non-elastic fabric, shaped by cutting and stitching it to fit round a concavity that contains a backrest and a seat. The wall of the concavity opposite the backrest is made of an elasticized fabric, and is sewn along the edges of a window cut in the non-elastic fabric, obstructing it. The backrest and seat are cellular panels over which padded covers are placed. The cover over the backrest is sewn crosswise to the cover over the seat and to the non-elastic wall at the base of the window, so that the backrest, when loaded, is inclined relative to the seat. The non-elastic wall is turned back on three sides and sewn to a second elastic wall opposite the first to form a bag-shaped structure with an opening for flexible laminae of a cradle frame.