Stroller Unlock Mechanism for Folding and Wheel Orientation Locking

Solution Overview

Problem

Existing strollers have mechanisms that occupy significant space and are inconvenient to operate, particularly due to the frame folding and wheel rotation orientation mechanisms, which affect consumer purchase intention and usability.

Innovation Solution

An unlock device with an operating member, retaining mechanism, and unlock modules that allow for the retention of lock mechanisms in an unlocked state, enabling easy operation and reducing space occupation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional lock mechanisms and folding mechanisms are used in strollers, then the stroller can achieve frame folding and wheel rotation orientation functions, but the mechanisms occupy much space, the operation is extremely inconvenient, and the stroller becomes unsightly

Engineering Contradiction:

Improveoperation convenienceVSAvoidmechanism complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the lock mechanism and folding mechanism into a single integrated unlock device. The operating member simultaneously controls both the lock mechanism (for wheel rotation orientation) and the folding mechanism (for frame folding), reducing the number of separate mechanisms and improving operational convenience while reducing space occupancy.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The unlock device serves multiple functions: it locks/unlocks the wheel rotation orientation mechanism and also controls the frame folding mechanism. This multi-functional design eliminates the need for separate controls, simplifying the user interface and reducing the overall complexity of the stroller's mechanical systems.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If traditional lock mechanisms and folding mechanisms are used in strollers, then the stroller can achieve frame folding and wheel rotation orientation functions, but the mechanisms occupy much space of the stroller

Engineering Contradiction:

Improvefolding and orientation functionsVSAvoidspace occupancy

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent combines the lock mechanism and folding mechanism into a single integrated unlock device. The operating member simultaneously controls both the lock mechanism (for wheel rotation orientation) and the folding mechanism (for frame folding), reducing the number of separate mechanisms and improving operational convenience while reducing space occupancy.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The unlock device is designed with a compact structure where components are nested within each other. The operating member, retaining mechanism, and unlock modules are arranged in a space-efficient configuration that minimizes the volume occupied by these mechanisms while maintaining full functionality.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Adaptability or versatility

If traditional lock mechanisms and folding mechanisms are used in strollers, then the stroller can achieve frame folding and wheel rotation orientation functions, but the stroller is unsightly

Engineering Contradiction:

Improvefolding and orientation functionsVSAvoidaesthetics

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The patent combines the lock mechanism and folding mechanism into a single integrated unlock device. The operating member simultaneously controls both the lock mechanism (for wheel rotation orientation) and the folding mechanism (for frame folding), reducing the number of separate mechanisms and improving operational convenience while reducing space occupancy.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts the core functionality of locking and folding into a dedicated unlock device with a streamlined design. By separating these functions into a purpose-built mechanism with a clean exterior, the overall aesthetic of the stroller is improved while maintaining full functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12594980B2Unlock device and stroller

Publication Date: 2026.04.07 WONDERLAND SWITZERLAND AG

AI summary

An unlock device includes at least one operating member, a retaining mechanism and at least one unlock module. The at least one operating member is movably disposed on a frame, wherein the frame is equipped with at least one lock mechanism. The retaining mechanism is disposed on the at least one operating member. The at least one unlock module is movably disposed on the frame and connected to the at least one lock mechanism. When the at least one operating member moves to drive the at least one unlock module to move to unlock the at least one lock mechanism, the retaining mechanism retains the at least one operating member at an unlock position.