Rolling Folding Frame With Simultaneous Handle and Wheel Deployment
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Solution Overview
Problem
Existing strollers and safety seats require a child to be removed from the safety seat before transitioning between vehicle and stroller use, disrupting the child's sleep and requiring inconvenient setup and retrieval processes, and are not adaptable for children who have outgrown the safety seat.
Innovation Solution
A portable rolling folding frame with a simultaneously deployable handle and wheelbase that securely attaches to a safety seat, allowing compact storage within a vehicle, deployment as a stroller, and conversion for use with larger children or as a cart for transporting goods, utilizing a rack and pinion mechanism for easy transition between configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stroller is integrated with a particular safety seat (Doona design), then the stroller can be deployed from the seat when removed from the vehicle, but the stroller cannot be used with existing safety seats and is not adaptable for children who have outgrown the safety seat
Solution Approach 1:
The frame is designed with universal attachment mechanisms that can connect to various safety seat brands and models, not just a specific integrated design. The frame serves multiple functions: it can be used as a stroller frame with safety seats, as a standalone stroller frame with basket seats for older children, and the seat portion can be removed to use the frame as a cargo cart, making it adaptable across different age groups and use cases
Solution Approach 2:
The stroller system is divided into separable components: a universal frame and a removable seat portion. This segmentation allows the frame to be used independently with different seat types (safety seats for infants, basket seats for toddlers) or without any seat as a cargo cart, providing versatility without requiring integration with a specific safety seat design
2Ease of operation
If the child is removed from the safety seat before transitioning to stroller, then the stroller can be set up, but the child is interrupted and caused to wake when sleeping
Solution Approach 1:
The frame is pre-configured with quick-attach mechanisms that allow the safety seat to be directly mounted to the frame in one motion. The wheelbase and handle are designed to be simultaneously deployable with a single action, so the entire transition from vehicle to stroller can be completed without removing the child from the safety seat, eliminating sleep disturbances
Solution Approach 2:
The frame design merges the wheelbase deployment and handle extension into a single simultaneous action through interconnected mechanical linkages. This allows the parent to deploy the entire stroller structure in one motion while the child remains undisturbed in the safety seat, which is then simply attached to the completed frame structure
3Productivity
If the stroller is fetched from elsewhere in the vehicle and set up prior to installing the safety seat, then the stroller is ready for use, but this two-step process is inconvenient and time-consuming
Solution Approach 1:
The frame is designed with pre-positioned attachment points and quick-connect mechanisms that allow the safety seat to be directly mounted to the frame in one motion. The wheelbase and handle are designed to be simultaneously deployable with a single action, so the entire transition from vehicle to stroller can be completed without removing the child from the safety seat, eliminating sleep disturbances
Solution Approach 2:
The frame design merges the wheelbase deployment and handle extension into a single simultaneous action through interconnected mechanical linkages. This allows the parent to deploy the entire stroller structure in one motion while the child remains undisturbed in the safety seat, which is then simply attached to the completed frame structure
4Volume of moving object
If the frame is designed to fold compactly around the safety seat, then vehicle storage space is preserved, but the deployment mechanism must be simple and reliable
Solution Approach 1:
The frame components are designed to nest within each other when folded. The handle telescopes into the frame body, and the wheelbase folds concentrically around the central support structure, creating a compact nested configuration that fits snugly around the safety seat in the vehicle while maintaining simple mechanical folding actions
Solution Approach 2:
The frame employs dynamic folding mechanisms with spring-assisted motion and cam-locked positioning that allow smooth transition between folded and deployed states. The simultaneous deployability of the handle and wheelbase is achieved through interconnected linkages that move in coordination, reducing the number of separate manual operations required while maintaining reliability
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
Enables seamless transition between vehicle storage, stroller use, and cart functionality without disturbing the child, preserving vehicle space, and accommodating children's growth by adapting from safety seat to stroller to cart without tools.
Implementation Method 1
utilizing a rack and pinion mechanism for easy transition between configurations
Data Source
AI summary
A folding frame which serves as basis for a stroller base to allow the interconnection of a child safety seat thereto, while allowing the installation of the child safety seat to a vehicle seat without requiring the disconnection of the safety seat from the folding frame. The folding frame extends from a folded configuration to an unfolded configuration for use as a stroller with or without the use of the child safety seat.