Synchronous Stroller Folding Mechanism for Attached Snack Tray
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Solution Overview
Problem
Conventional strollers with detachable snack trays require tools for dismantling, making the folding process cumbersome, or occupy excessive space when the tray is left attached, negating the benefit of foldability.
Innovation Solution
A synchronous folding mechanism with a rear joint, front joint, handlebar joint, and swing member, allowing for simultaneous movement of the handlebar, front leg, and snack tray relative to the rear leg, enabling tool-free folding without the need to detach the snack tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the snack tray is detachably connected to the main frame by screws or fasteners, then the snack tray can be removed to save space, but the dismantling process requires tools and is cumbersome
Solution Approach 1:
The connection between the snack tray and main frame is divided into modular components: the tray body with integrated tray legs, the main frame with receiving spaces, and elastic buttons as independent fastening elements. This segmentation allows the tray to be quickly detached by simply pressing the buttons without tools, while maintaining secure attachment during use.
Solution Approach 2:
The elastic buttons automatically engage with the receiving spaces to secure the tray, and can be easily released by user pressure. The system serves itself by using the natural elasticity of the buttons to maintain connection force, eliminating the need for tools or complex dismantling procedures while preserving both secure attachment and easy removal.
2Ease of operation
If the snack tray remains attached to the main frame, then the folding process becomes simpler, but the stroller occupies too much space
Solution Approach 1:
The snack tray connection system transitions from a static fixed or permanently detached state to a dynamic easily detachable state. The elastic buttons allow the tray to be quickly attached or detached without tools, enabling users to adapt the configuration based on whether folding or space-saving is the priority at any given moment.
3Stability of the object's composition
If the snack tray is securely attached to the main frame, then the tray remains stable during use, but the folding mechanism becomes more complex
Solution Approach 1:
The fastening function is extracted from the main folding mechanism and implemented through independent elastic buttons that work autonomously. These buttons provide secure attachment during use but do not interfere with the folding operation, as they can be easily disengaged to allow the tray and main frame to fold together without mechanical interference.
Data Source
AI summary
A synchronous folding mechanism is adapted to be mounted to a stroller, and includes a rear joint, a handlebar joint, a front joint, a swing member and a first link member. The handlebar joint and the front joint are rotatably connected to the rear joint. The swing member has opposite end portions, one of which is rotatably connected to the rear joint. The first link member is rotatably connected to the other one of the end portions of the swing member, and is rotatably connected to one of the handlebar joint and the front joint. Rotation of the one of the handlebar joint and the front joint drives a swinging movement of the swing member relative to the rear joint and a movement of the first link member relative to the rear joint.