Child Carriage Without Push Handle for Compact Folding
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Solution Overview
Problem
Existing strollers face challenges in achieving a compact fold size due to the presence of a push handle that extends above the child carrier, limiting their storage convenience.
Innovation Solution
A child carriage design devoid of a push handle above the child carrier, utilizing a frame with offset ends and seat couplers to removably couple to the carrier, allowing the carriage to be pushed by the carrier's handle, and featuring a folding mechanism that reduces volume when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a push handle that extends above the child carrier is included in the stroller design, then the stroller can be easily pushed and controlled, but the folded size of the stroller increases, reducing storage convenience
Solution Approach 1:
The patent removes the traditional push handle that extends above the child carrier from the stroller design. Instead, the stroller utilizes the child carrier's own handle for pushing, thereby eliminating the extra structural component that would increase folded volume while maintaining the pushing function.
Solution Approach 2:
The child carrier's handle serves dual purposes: it functions as both the carrying handle for the child carrier itself and as the push handle for the entire stroller assembly. This multi-functionality eliminates the need for a separate push handle structure.
2Ease of operation
If the stroller frame includes a push handle structure, then the pushing function is enhanced, but the complexity of the frame structure increases
Solution Approach 1:
The patent extracts and removes the dedicated push handle structure from the stroller frame design, simplifying the frame to only include the essential lower frame end with wheels and upper frame end for carrier support, without any extending handle components.
Solution Approach 2:
The child carrier's handle performs the pushing function independently, without requiring additional frame structures or components from the stroller. The carrier's own handle serves the pushing need, eliminating complex frame-integrated push handle mechanisms.
3Reliability
If multiple seat couplers are used to securely attach the child carrier, then the reliability of attachment increases, but the device complexity increases
Solution Approach 1:
The patent distributes multiple seat couplers at different locations on the upper frame end (front, rear, and sides) to provide localized attachment points. This ensures secure attachment at each critical position while using simple, standardized coupler mechanisms rather than complex integrated systems.
Solution Approach 2:
The attachment system is divided into multiple independent seat couplers rather than one complex mechanism. Each coupler operates independently to secure the child carrier, allowing for modular design and easier manufacturing while achieving reliable multi-point attachment.
Data Source
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AI summary
In one example, a wheeled carriage has a frame with couplers that releasably couple to a child carrier so as to prevent upwards removal of the child carrier from the carriage. The couplers can include a pair of couplers that removably couple to opposing sides of the child carrier. The couplers can include at least one other coupler that removably couples to the child carrier. The carriage is devoid of any push handle that extends above the child carrier and is configured to be pushed by a push handle of the child carrier when the child carrier is coupled to the carriage. The at least one other coupler can limit torque applied to the pair of couplers when the carriage is pushed by the child carrier push handle, and/or couple to a coupler of an infant car seat that also couples the infant car seat to a car seat base.