Foldable Child Restraint with Adjustable Harness and Telescopic Footrest
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Solution Overview
Problem
Conventional child restraint devices often restrict adult freedom in public settings due to their inability to accommodate children of varying sizes, leading to unrestricted child movement that hinders adult activities.
Innovation Solution
A foldable child's chair with a frame that includes an upper and lower section, a corrugated seat back and bottom, and adjustable struts, allowing the seat to be securely attached to a bench or chair, with safety belts to restrain the child, enabling the seat to be folded for storage and adjusted to fit different child sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional child restraint devices are used in public settings, then children can be restrained, but adult freedom is restricted due to inability to accommodate varying child sizes
Solution Approach 1:
The child restraint device incorporates adjustable components including an adjustable backrest with multiple recline positions, an adjustable footrest with telescopic legs, and height-adjustable harness attachment points. These dynamic adjustments allow the same device to accommodate children of various sizes and ages, resolving the contradiction between adaptability and ease of operation by enabling quick customization without requiring multiple specialized devices
Solution Approach 2:
The device allows modification of key parameters such as backrest angle (via adjustable backrest), leg length (via telescopic footrest legs), and harness height (via adjustable attachment points). By changing these parameters, the device adapts to different child sizes while maintaining ease of use through simple adjustment mechanisms rather than complex restructuring
2Ease of operation
If portable child seats are used to accommodate various child sizes, then adult freedom is improved, but child restraint security is reduced
Solution Approach 1:
The harness system incorporates dynamic adjustment capabilities with height-adjustable attachment points on the backrest and configurable strap lengths. This allows the harness to maintain proper fit and security for children of various sizes while preserving portability and ease of operation through straightforward adjustment mechanisms rather than fixed rigid structures
Solution Approach 2:
The device combines multiple functions including restraint (harness system), positioning (adjustable backrest and footrest), and portability (foldable frame) into a single universal system. This multi-functionality ensures that security requirements are met across different usage scenarios and child sizes without compromising ease of operation
3Reliability
If child restraint devices are designed for specific child sizes, then restraint security is improved, but adaptability to various child sizes deteriorates
Solution Approach 1:
The device employs dynamic adjustment mechanisms throughout: the backrest can be positioned at multiple angles, the footrest legs are telescopic with adjustable lengths, and the harness attachment points can be moved vertically. These dynamic features enable a single device to provide secure restraint for children of various sizes by customizing the fit, eliminating the need for multiple size-specific devices
Data Source
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AI summary
A child restraining device in the form of a folding or foldable chair includes a frame with a back. The back of the frame has parallel rods and a bottom foldably attached to the back by lockable hinges. The apparatus has upper and lower corrugated panels attached to the frame. There are a plurality of straps which fit removably through slots on the seat back and seat bottom. These straps are part of a harness that can be adjusted to the height/size of the child to be restrained.