Stroller Frame Structure with Foldable Segmentation and Dual-Position Handle
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Solution Overview
Problem
Conventional children's trailers with two seats are bulky, difficult to maneuver in small spaces, and often limited to towing, making them inconvenient to push or use in tight areas.
Innovation Solution
A stroller frame structure with a main frame, seat assembly, and handle that can fold and adjust positions to facilitate storage and use as both a trolley and trailer, allowing for smaller size, easier mobility, and versatile handling by sliding or detaching the handle between push and pull positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional double stroller with two seats is used, then multiple children can ride simultaneously, but the size becomes large and difficult to maneuver in small spaces
Solution Approach 1:
The stroller is divided into separate functional modules: a foldable frame structure, detachable seat assemblies, and independent wheel groups. This segmentation allows the stroller to be configured for multiple children when needed while enabling compact folding for easy storage and transport, resolving the contradiction between capacity and size.
Solution Approach 2:
The stroller employs dynamic elements including a foldable main frame that transitions between expanded and compact states, movable seat assemblies that can be detached and repositioned, and a handle that can be moved between push and pull positions. These dynamic features allow the stroller to adapt its configuration based on usage needs, maintaining versatility while reducing size when not in use.
2Quantity of substance
If a large size trailer is used to accommodate multiple children, then cargo space is increased, but the trailer becomes difficult to move in small spaces
Solution Approach 1:
The frame is segmented into multiple connectable sections with folding mechanisms, allowing the structure to expand to accommodate multiple children and cargo when needed, while collapsing to a compact form for easy maneuverability in small spaces. The detachable seat assemblies can be stored within the folded frame, maximizing space utilization.
Solution Approach 2:
The seat assemblies can be nested within the folded frame structure, and the handle can be stored within the frame when not in use. This nesting arrangement allows the stroller to maintain large cargo capacity when deployed while occupying minimal space during storage and transport, resolving the contradiction between cargo space and mobility.
3Device complexity
If the stroller is designed for towing only, then the structure can be simplified, but convenience is reduced as it cannot be pushed
Solution Approach 1:
The stroller is designed with universal functionality, incorporating a handle that can be positioned for both pushing and pulling operations, and a frame structure that supports both modes of maneuvering. This multi-functionality allows the stroller to serve multiple purposes and adapt to different user preferences without requiring separate designs for towing and pushing, resolving the contradiction between structural simplicity and handling versatility.
4Volume of moving object
If the main frame is made foldable to facilitate storage, then the size is reduced, but the structural complexity increases
Solution Approach 1:
The main frame is divided into multiple segments connected by folding joints, allowing the structure to collapse into a compact configuration for storage while maintaining structural integrity during use. This segmentation enables easy folding and unfolding operations, reducing the need for complex locking mechanisms and minimizing overall structural complexity despite the foldable design.
Data Source
AI summary
In the present invention, a stroller frame structure is disclosed, including a main frame, a seat assembly, a handle. Both the seat assembly and the handle are disposed on the main frame. The main frame has an unfolded state and a folded state, and is connected to a front wheel group and a rear wheel group. The main frame includes a first support surface and a second support surface. The second support surface is lower than the first support surface, to form a ridable structure having a height difference. The main frame is used for forming a seat for a child to ride on, and a size of the stroller is smaller than a size of a conventional double stroller, to facilitate moving in small space or a place with dense people. The handle is moved to a push position or a pull position, to implement functions of pushing and pulling the stroller. The main frame is of a foldable structure, to facilitate storage and carrying of the stroller.