Stroller Frame Pivot Unit for Single-Hand Folding
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Solution Overview
Problem
Conventional vehicle frames and strollers require complex operation and two hands to fold and unfold, making them inconvenient for users.
Innovation Solution
A vehicle frame design featuring a first tube, second tube, third tube, and fourth tube, along with a pivot unit that allows the frame to be switched between unfolded and folded modes, enabling single-handed operation by stabilizing the front and rear wheels in different configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional folding mechanisms are disposed between the front leg and rear leg, and further between the front leg and handle, then the stroller can be folded into a smaller size, but the operation becomes complicated and requires two hands
Solution Approach 1:
The patent merges multiple folding mechanisms into a single integrated pivot unit located at the rear leg. This pivot unit simultaneously controls the folding of both the front leg and the handle, allowing the entire stroller to be folded with a single hand operation rather than requiring separate mechanisms for each component
Solution Approach 2:
The pivot unit at the rear leg serves multiple functions: it acts as the folding mechanism for the front leg, the handle, and provides structural support. This multi-functional design eliminates the need for separate folding mechanisms at the front leg and handle, simplifying the overall structure and operation
2Volume of moving object
If conventional folding mechanisms are disposed between the front leg and rear leg, and further between the rear leg and handle, then the stroller can be folded into a smaller size, but the operation becomes complicated and requires two hands
Solution Approach 1:
The patent extracts and consolidates the folding function from multiple distributed mechanisms into a single pivot unit at the rear leg. This centralization removes the complexity of having separate mechanisms at the front leg and handle, while maintaining the ability to fold the stroller into a compact size
Solution Approach 2:
Multiple folding functions are merged into one pivot unit that simultaneously manages the front leg and handle folding actions, reducing the total number of mechanical components and simplifying the overall device structure
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
The design simplifies the folding process, allowing users to easily switch between modes without bending, enhancing convenience and usability.
Implementation Method 1
The first pivot unit is disposed between the second tube and the fourth tube, and movably switched between an unfolded mode and a folded mode
Data Source
AI summary
A stroller includes a texture carrier, a wheel set and a vehicle frame. The wheel set includes a front wheel and a rear wheel. The vehicle frame includes a first tube, a second tube, a third tube, a fourth tube and a first pivot unit. The front wheel is disposed on the first tube. The rear wheel is disposed on the second tube. The third tube includes a front section and a rear section connected to each other. The fourth tube is pivoted between the first tube and the second tube. The first pivot unit is disposed between the second tube and the fourth tube. The first pivot unit switched into an unfolded mode can stabilize the first tube and the fourth tube at the same direction. The pivot unit switched into a folded mode can rotate the fourth tube relative to the first tube and the second tube.