Collapsible Stroller with Nested Secondary Seat
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional child buggies are not designed to accommodate two children without requiring the purchase of a new buggy, and existing solutions are either large, cumbersome, or require complex and time-consuming seat removal for storage, making them inefficient for compact transport.
Innovation Solution
A child stroller with a frame that allows for conversion between an in-use and folded storage configuration without detaching the secondary seat, featuring quick release levers and pivotable components to enable compact storage while maintaining the secondary seat's attachment, allowing for easy handling and space efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional buggies are designed with fixed seats for two children, then the capacity to transport two children is improved, but the maneuverability and storage compactness deteriorate
Solution Approach 1:
The buggy is divided into modular components including a primary seat assembly and a secondary seat assembly that can be independently positioned. The frame includes separate seat support structures that allow each seat to be adjusted or removed independently, enabling the buggy to accommodate two children while maintaining maneuverability through selective configuration.
Solution Approach 2:
The buggy incorporates dynamic seat positioning mechanisms where the secondary seat can be moved between different positions (attached to frame, attached to primary seat, or removed). The frame includes movable support structures with adjustment mechanisms that allow the seat configuration to change based on usage requirements, improving both capacity and maneuverability.
2Adaptability or versatility
If conventional buggies are designed with fixed seats for two children, then the capacity to transport two children is improved, but the storage space requirements increase
Solution Approach 1:
The secondary seat assembly is designed to nest within or attach to the primary seat assembly when not in use. The frame includes integrated storage positions where the secondary seat can be positioned within the overall buggy structure, reducing the external dimensions required for storage while maintaining the capability to transport two children.
3Volume of moving object
If conventional buggies require seat removal for compact storage, then the storage compactness is improved, but the complexity and time required for seat removal increase
Solution Approach 1:
The seat attachment mechanism incorporates dynamic locking and releasing features that allow quick transition between attached and detached states. The frame includes movable support structures with adjustment mechanisms that enable easy reconfiguration without complex tools or procedures, maintaining storage compactness while reducing operational complexity.
4Volume of moving object
If conventional buggies require seat removal for storage, then the storage compactness is improved, but the time required for seat removal increases
Solution Approach 1:
The seat attachment mechanism is designed with preliminary positioning features and pre-aligned connection points that enable quick engagement and disengagement. The frame includes integrated guides and locking features that prepare the seat for rapid attachment or removal without requiring complex alignment procedures, reducing the time required for seat removal while maintaining storage compactness.
Data Source
AI summary
A child stroller has a frame with a primary seat frame, at least one forward wheel and at least one rear wheel rotatably mounted to the frame, and primary and secondary forward-facing seats operatively supported by the frame. The secondary seat is positioned at least partially behind and at least partially below the primary seat. The stroller is convertible between an in-use configuration for transporting children and a folded storage configuration without removing the secondary seat, with the secondary seat positioned at least partially within the frame when the stroller is in the folded storage configuration. The stroller is configured such that the secondary seat is selectively movable from an in-use position to a storage position without folding the remainder of the stroller such that, following movement of the secondary seat to the storage position, the remainder of the stroller is selectively foldable around the secondary seat.