Adjustable Child Seat Shell for Posture Fit and Growth Support
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Solution Overview
Problem
Child restraint systems fail to accommodate the rapid growth and changing proportions of children, leading to inadequate protection due to improper sizing and support, particularly affecting the head and neck in early infancy.
Innovation Solution
A child seat with an adjustable mechanism between the inner and outer shells, allowing for variation in the size and shape of the child protection region through a latch system with arcuate extension tracks and locking apertures, enabling the inner shell to move relative to the outer shell, and the inclusion of interchangeable cushions for customized support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed child seat configuration is used, then the structure is simple and easy to manufacture, but it cannot accommodate children of different sizes and postures, leading to inadequate protection
Solution Approach 1:
The child seat incorporates an adjustable inner shell that can move relative to the outer shell along a defined trajectory, transforming the fixed configuration into a dynamic one. The adjustment mechanism includes a latch system with latching pins that can engage with multiple locking apertures, allowing the seat to adapt to different child sizes and postures while maintaining structural integrity through controlled movement.
Solution Approach 2:
The child seat is divided into two main shells: an outer shell and an inner shell. The inner shell is the movable component that can be adjusted independently within the outer shell. This segmentation allows the protective structure to be divided into fixed and adjustable parts, enabling customization for different children while keeping the overall structure manageable.
2Adaptability or versatility
If the inner shell is made movable to adjust protection region, then adaptability improves, but the reliability of securing the shell in position may be compromised
Solution Approach 1:
The adjustment mechanism enables the inner shell to move dynamically along a defined trajectory while maintaining reliable positioning through the latch system. The latching pins engage with multiple locking apertures distributed along the trajectory, allowing the shell to be securely fixed at various positions depending on the child's size and posture requirements.
Solution Approach 2:
The latch mechanism is designed with spring-loaded latching pins that automatically engage with the locking apertures when the inner shell reaches a desired position. This beforehand cushioning ensures that the shell is securely locked in place before any impact or sudden movement occurs, maintaining reliability during use.
3Measurement precision
If multiple locking apertures are provided for positioning, then positioning precision improves, but the device complexity increases
Solution Approach 1:
The latch mechanism allows the latching pins to move dynamically along the arcuate extension tracks and engage with multiple locking apertures. This dynamic engagement system provides precise positioning at various stages of the inner shell's trajectory, accommodating different child sizes and postures through selective locking at appropriate apertures.
Data Source
AI summary
A child seat comprising: an outer shell supporting an inner shell therein, the inner shell and the outer shell together defining a child protection region within the seat; an adjustment mechanism disposed between the inner shell and the outer shell defining a trajectory of movement for the inner shell relative to the outer shell, wherein relative movement between the inner shell and the outer shell along the trajectory of movement adjusts a size and a shape of the child protection region of the seat.