Double-Seat Stroller Frame Linking Mechanism for One-Handed Folding
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Solution Overview
Problem
Existing double-seat baby strollers require both hands to fold, as the frame cannot be folded with one hand due to the complexity of manipulating lock members and frame alignment.
Innovation Solution
A frame assembly with a linking mechanism that connects bars of the first and second frames, allowing the central post to drive the first and second main posts closer together when the second frame is folded, enabling one-handed folding by pivoting and sliding connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional separate folding mechanisms are used for each frame, then each frame can be folded independently, but both hands are required to operate multiple lock members and align frames
Solution Approach 1:
The patent combines two separate folding mechanisms into a single integrated linking mechanism that connects the first and second frames. This linking mechanism includes a linking bar that pivotally connects to both frames and a single lock member that controls the folding of both frames simultaneously, reducing the number of operations required and enabling one-handed folding.
Solution Approach 2:
The linking mechanism is designed so that when one frame is folded, it automatically drives the other frame to fold through the mechanical connection of the linking bar and lock member. The system serves itself by using the motion of one frame to facilitate the folding of the other frame, reducing the need for manual intervention.
2Reliability
If multiple lock members are used to control each frame, then each frame can be securely locked, but the operation becomes complex requiring both hands
Solution Approach 1:
The patent merges multiple lock members into a single lock member that controls both frames. This single lock member is pivotally connected to the linking mechanism and simultaneously secures both the first and second frames, maintaining reliable locking while simplifying operation to one hand.
3Productivity
If frames are folded independently, then each frame can be adjusted separately, but the time required to fold the entire stroller increases
Solution Approach 1:
The linking mechanism enables one frame to automatically drive the folding of the other frame through mechanical coupling. When the user folds one frame, the motion is transmitted through the linking bar and lock member to fold the second frame simultaneously, doubling the folding speed without requiring additional manual operations.
Solution Approach 2:
By combining the folding actions of both frames into a single mechanical operation through the linking mechanism, the patent achieves simultaneous folding of both frames, effectively doubling the productivity compared to independent folding operations.
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 the frame assembly to be folded or extended with one hand, simplifying the operation and improving user convenience by synchronizing the movement of the first and second frames through the linking mechanism.
Implementation Method 1
one end of the one of the bars of the first frame and one end of the one of the bars of the second frame being pivotally connected to the linking member respectively
Implementation Method 2
the linking member has a pair of vertical slide ways arranged in a column and a pair of horizontal slide ways at two sides of the pair of vertical slide ways
Data Source
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AI summary
A frame assembly for a double-seat baby stroller is provided. The frame assembly comprises: a first frame (10) including a first main post (11), plural first bars (12), plural second bars (13), plural third bar (14), a central post (71) and a first folding device (15) pivotally connected to one another; and a second frame (20) including a second main post (21), plural fourth bars (22), plural fifth bars (23), plural sixth bar (24), the central post (71) and a second folding device (25) pivotally connected to one another. The frame assembly is characterized by further comprising a linking mechanism (30) connecting one of the bars of the first frame (10) and one of the bars of the second frame (20), wherein when the second main post (21) of the second frame (20) and the central post (71) become close to each other, the one of the bars of the first frame (10) is driven to move via the linking mechanism (30) by the one of the bars of the second frame (20), so that the first main post (11) of the first frame (10) and the central post (71) become close to each other.