Child carriage and child carrier with couplers for removably coupling to one another

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Solution Overview

Problem

Conventional strollers face challenges in reducing their folded size, as they often require a push handle that extends above the child carrier, limiting compactness when stored.

Innovation Solution

A child carriage design without a push handle above the child carrier, utilizing a frame with offset ends and seat couplers to securely attach the child carrier, allowing the carrier's handle to be used for pushing and enabling a more compact folding mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a push handle is added to extend above the child carrier, then the ease of operation is improved, but the volume of the moving object increases

Engineering Contradiction:

Improveease of pushingVSAvoidfolded volume

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The patent merges the push handle function with the child carrier's existing handle. The child carrier's handle serves dual purposes: it is used for carrying the carrier separately and for pushing the carriage when coupled together. This eliminates the need for a separate push handle on the carriage, reducing the overall folded volume while maintaining ease of operation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The child carrier's handle is designed to perform multiple functions: it serves as a carrying handle when the carrier is used independently and as a push handle when coupled to the carriage. This multi-functionality eliminates the need for additional components, thereby reducing the folded volume of the complete stroller system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If the push handle is integrated into the carriage frame, then the device complexity is reduced, but the volume of the moving object increases

Engineering Contradiction:

Improvenumber of componentsVSAvoidfolded volume

Core Design Contradiction:

Device complexityVSVolume of moving object

Solution Approach 1:

The patent extracts the push handle function from the carriage frame and relocates it to the child carrier's handle. This allows the carriage to have a simpler, more compact frame structure that can fold to a smaller volume, while the child carrier's handle provides the necessary pushing capability when coupled together.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20240034383A1Child carriage and child carrier with couplers for removably coupling to one another

Publication Date: 2024.02.01 WONDERLAND SWITZERLAND AG

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.