Foldable Booster Seat Tray Mounting for Height Adjustment
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Solution Overview
Problem
Existing child booster seats with attached trays often restrict height adjustment, making them less versatile and inconvenient to carry when the backrest is folded.
Innovation Solution
A foldable child booster seat design featuring a seat base with armrests, a movably coupled backrest, and a tray that can be mounted on either the seat base or a support unit, allowing for height adjustment and easy folding, with a handle for convenient carrying, and a storage space in the backrest for additional functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tray is attached to the bottom of the child booster seat, then the tray is securely positioned, but the height adjustment of the child booster seat is restricted
Solution Approach 1:
The tray is separated from the seat base and can be independently positioned on the armrests or on the support unit, allowing height adjustment of the seat without being constrained by a fixed tray attachment at the bottom
Solution Approach 2:
The tray is designed to be removably mountable to multiple locations (seat base or support unit) and can be disposed in multiple states (use or stowed), providing versatile positioning options that accommodate both stable tray placement and height adjustment needs
2Volume of moving object
If the backrest is folded, then the seat is more compact for storage, but the backrest ends are unsupported and may droop or be unstable
Solution Approach 1:
A support unit is introduced as an intermediary element that provides support to the backrest when folded, preventing drooping and instability while maintaining the compact folded configuration
Solution Approach 2:
The backrest folding mechanism includes built-in support features (such as the support unit with positioning spaces) that automatically maintain backrest stability during the folded state without requiring additional external support structures
3Volume of moving object
If the backrest is folded, then the seat is more compact, but it is difficult to position the seat upright for easy carrying
Solution Approach 1:
The support unit acts as a mediator that enables the folded backrest to be positioned upright by providing structural support, making the seat easy to carry while maintaining compact folded volume
Solution Approach 2:
The seat design allows transition between different configurations (folded/unfolded, upright/tilted) through movable components and adjustable positioning, enabling easy manipulation for carrying purposes
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 design provides a versatile, height-adjustable seating solution with secure backrest support, easy tray management, and storage, enhancing usability and convenience, especially when the backrest is in a folded position.
Implementation Method 1
The backrest also includes a pivot piece spring for biasing the pivot piece toward the armrest that is formed with the elongated guide channel
Implementation Method 2
The foldable child booster seat further comprises a latch spring for biasing the latch toward the latch cavity
Data Source
AI summary
A foldable child booster seat includes a seat base, a backrest, a support unit, and a tray. The seat base includes a seat portion having a seating surface, and a pair of armrests respectively disposed at left and right sides of the seat base. The backrest is mounted foldably to the seat base. The support unit is movably coupled to the seat base to permit height adjustment of the seat portion relative to the support unit. The tray is removably mountable to a selected one of the seat base and the support unit to dispose the tray in a selected one of a state of use and a stowed state.