Carriage Frame Folding Device with Integrated Seat Unlocking
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Solution Overview
Problem
Existing baby carriages with detachable seats require inconvenient and troublesome operations for folding, as the seat must be detached before folding the frame, or require complex mechanisms that are difficult to manufacture and assemble, and lack integration of seat back adjustment with folding.
Innovation Solution
A folding joint configuration that links the handhold, front leg, and rear leg through a turnover linkage plate, with an unlocking button, clasping block, and torsion spring, allowing simultaneous folding of the handhold and front leg toward the rear leg, and enabling independent or combined folding of the carriage frame with the seat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the seat is separated from the frame and requires detachment before folding, then the seat can be attached facing forward or backward, but the folding operation becomes inconvenient and troublesome
Solution Approach 1:
The patent combines the seat assembly and frame assembly into a unified folding system where both components fold simultaneously through integrated linkage mechanisms. The seat mount is structurally connected to the frame's folding joints, allowing the seat and frame to be folded together as one unit without requiring prior detachment, thus resolving the operational inconvenience while preserving attachment versatility
2Ease of operation
If the carriage frame and seat are combined and folded together, then folding operation is simplified, but the structure becomes too complicated and difficult to manufacture and assemble
Solution Approach 1:
The patent divides the folding mechanism into modular segments: a folding joint assembly with pivot connections, a separate linkage component with turning pairs, and an integrated seat mount with folding joints. Each segment is designed as an independent module that can be manufactured separately and then assembled through standardized connections, reducing overall manufacturing complexity while enabling simultaneous folding of the seat and frame
3Reliability
If separate mechanisms are used for seat back adjustment and frame folding, then each function can be optimized, but the overall device complexity increases
Solution Approach 1:
The patent designs the folding joint assembly to serve multiple functions: it provides the pivot connection for frame folding, incorporates the linkage mechanism for simultaneous seat folding, and integrates the seat back adjustment mechanism through the same structural components. The linkage component with its turning pairs and connecting rods enables both folding motion and seat back angle adjustment through a unified mechanical system, reducing overall device complexity while maintaining functional optimization
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
Simplifies the folding operation by allowing the carriage frame and seat to be folded together seamlessly, enhancing user convenience and stability while integrating seat back adjustment with frame folding.
Implementation Method 1
a torsion spring, one end of which is clamped on the pivot rotation part of the front leg and the other end of which is clamped on the folding joint, so as to have an elastic force for pulling the front leg toward the rear leg
Data Source
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AI summary
A carriage frame folding device can be unlocked along with the folding of the seat. It comprises a folding joint having a seat connector to be connected with the seat. The upper end and front end of the folding joint are respectively fixed with a handhold and a front leg through pivotal connection and its rear end is fixed with a rear leg. A turnover linkage plate having a clasping hole in the center is connected between the handhold and the front leg. The seat connector houses an unlocking button, whose lower end is linked with an unlocking linkage component. The folding joint houses a handhold clasping block, which moves together in the same direction as the upper end of the unlocking button. When the unlocking button or the unlocking linkage component slides downward under pressure, the fixing pin and the handhold clasping piece will move together and release the locking state, so that the handhold and the front leg can turn simultaneously toward the rear leg and be folded.