Foldable Pushchair Chassis With Bicycle Rack Seat Conversion
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Solution Overview
Problem
Existing stroller-to-bicycle conversion systems are cumbersome, expensive, and lack practicality, failing to meet the needs of families due to incompatibilities in design and standardization, and often violate normative frameworks.
Innovation Solution
A stroller system convertible into a bicycle seat with a rigid foldable chassis, adjustable handle, steerable wheels, and locking mechanisms, allowing it to be used as a stroller or bicycle seat, and easily transition between configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If strollers are designed to be loaded onto bicycles, then compatibility with bicycle transport is improved, but the stroller structure becomes more complex and difficult to maneuver
Solution Approach 1:
The stroller is designed with a universal fixing device that enables it to be mounted on both bicycle luggage racks and pushchair adapters, allowing a single stroller design to serve multiple transport functions (bicycle and stroller mode) without requiring separate specialized structures for each mode
2Quantity of substance
If strollers are made bulky to provide adequate seating space, then child comfort is improved, but storage and maneuverability in urban environments deteriorate
Solution Approach 1:
The stroller incorporates a foldable seat base that can be collapsed when not in use, transforming from an extended comfortable seating configuration to a compact folded state for easy storage in small spaces and improved maneuverability in urban environments
3Adaptability or versatility
If conversion systems are designed to accommodate both stroller and bicycle seat functions, then versatility is improved, but the system becomes heavier and more expensive
Solution Approach 1:
The conversion system is divided into separate functional modules: a universal fixing device that attaches to the stroller, a bicycle seat adapter that mounts on the bicycle rack, and optional bicycle seat accessories. This segmentation allows users to only attach components when needed, reducing overall system weight while maintaining dual-function versatility
4Adaptability or versatility
If strollers are designed without standardized fixing devices, then design flexibility is improved, but compatibility with different bicycles and mounting locations deteriorates
Solution Approach 1:
The fixing device is designed with universal mounting capabilities that can attach to various bicycle luggage rack types and stroller frames using standardized interface elements, enabling broad compatibility across different bicycle and stroller models without requiring complex custom-designed fixing mechanisms for each combination
Data Source
AI summary
The invention relates to a stroller system (2) convertible into a bicycle seat comprising a rigid foldable chassis (4), a set of steerable front wheels (14) pivotally mounted about a front axis (X-X), a set of rear wheels (20) pivotally mounted about a rear axis (Y-Y), a device for locking the front wheel set in its deployed and folded positions, a removable fixing device (6) on a bicycle luggage rack, and a mechanism for locking and unlocking the rear wheel set able to cooperate with a stop member secured to the rear wheel set between a locking position in which it maintains the rear wheel set in its deployed position and an unlocking position in which it allows the rear wheel set to pivot towards its folded position, the rear wheel set being maintained in its folded position by the front wheel set when the latter is locked in its folded position.