Push-Pull Stroller Frame With Foldable Rod Assembly
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Solution Overview
Problem
Existing strollers face issues such as a significant gap between the user and children, leading to poor communication, and complex dual push-pull configurations that increase cost and space requirements.
Innovation Solution
A stroller frame design with a push-pull function, featuring a pivotally connected pull rod assembly near the front wheels and a diagonally extending push rod assembly, allowing for easy switching between push and pull operations, and adjustable height for user comfort, with a simple structure and compact folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a push handle is located at the rear of the lower supporting frame, then the user can operate the stroller for pushing, but the user faces a considerable distance from the children seated on the front side of the upper frame, hampering effective communication and interaction
Solution Approach 1:
The push rod assembly is designed to be movable between a stored position and an extended operational position. When extended, it raises the user's operating position to be substantially aligned with the front of the upper frame, dynamically adjusting the user-child distance to enable effective communication while maintaining operational convenience.
Solution Approach 2:
The push rod assembly acts as an intermediary mechanism between the user and the stroller frame. It transfers and amplifies the user's pushing force while simultaneously elevating the user's position, mediating both the mechanical operation and the spatial relationship for communication.
2Adaptability or versatility
If a dual push-pull configuration with separate push rod assembly and pull rod assembly is adopted, then the user can either push or pull the stroller, but the structure becomes complex and expensive, occupying significant space when folded
Solution Approach 1:
The push rod assembly is designed with multi-functionality to serve both pushing and pulling operations. It can be positioned in different configurations to facilitate either pushing from the rear or pulling from the front, eliminating the need for separate dedicated assemblies and reducing overall structural complexity.
Solution Approach 2:
The invention merges the functions of separate push and pull rod assemblies into a single integrated push rod assembly. This unified design reduces the number of components, simplifies the overall structure, and decreases the space required when folded, while maintaining both push and pull capabilities.
Data Source
AI summary
A stroller frame has a push-pull function consisting of a lower supporting frame and an upper frame connected through a frame joint. The lower supporting frame comprises a front leg connected to a front wheel set and a rear leg connected to a rear wheel set. The lower portion of the front leg is pivotally attached to a pull rod assembly located at the front of the stroller frame. In addition, a push rod assembly is connected to the lower supporting frame and extends diagonally toward the rear of the stroller frame to allow the user to push the stroller frame in a raised position while walking, which facilitates pulling or pushing the stroller frame as desired while also allowing interaction with the child riding on the upper frame. The stroller frame is characterized by its ease of use and versatile functionality.