Stroller Frame Locking Mechanism Single-Hand Folding

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Solution Overview

Problem

Current foldable stroller designs require complex and laborious operation steps for folding and unfolding, making the process time-consuming and cumbersome, especially for strollers used by children and individuals with limited mobility.

Innovation Solution

A stroller frame locking mechanism that includes a support assembly and a locking device, allowing the front and rear wheel brackets to pivot relative to each other, with a pulling strap for easy unlocking and folding, simplifying the process by enabling the stroller to be folded with a single-handed operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional foldable stroller structures are used, then the stroller can be folded and gathered for storage, but the folding and unfolding process requires complex and laborious operation steps involving multiple locking and unlocking actions

Engineering Contradiction:
Improvefolding operation simplicityVSAvoidlocking mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the locking mechanisms of the front wheel bracket and rear wheel bracket into a single integrated locking device that controls both brackets simultaneously. This merging of multiple locking functions into one unified mechanism reduces the number of operational steps required for folding and unfolding the stroller frame.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The locking device is designed to perform multiple functions: it locks and unlocks both the front wheel bracket and rear wheel bracket, and it also controls the support assembly positioning. This multi-functionality eliminates the need for separate locking mechanisms for each component, simplifying the overall operation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If multiple separate locking mechanisms are used for front and rear wheel brackets, then each bracket can be securely locked, but the folding process becomes time-consuming and laborious

Engineering Contradiction:
Improvebracket locking reliabilityVSAvoidfolding time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent integrates the locking control for both front and rear wheel brackets into a single locking device operation. When the user operates this unified locking device, it simultaneously locks or unlocks both brackets, maintaining secure locking reliability while reducing the time required compared to operating separate locking mechanisms for each bracket.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If a complex locking mechanism is used to ensure secure folding, then the stroller structure is stable, but the operation becomes cumbersome especially for users with limited mobility

Engineering Contradiction:
Improvestroller frame stabilityVSAvoidfolding ease for limited mobility users
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The locking device is designed as a multi-functional component that simultaneously manages the locking of both wheel brackets and the positioning of the support assembly. This consolidation maintains the structural stability and security of the folded stroller while making the operation simple and accessible for users with limited mobility, eliminating the need to manipulate multiple separate locking mechanisms.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS12122442B2Stroller frame locking mechanism and stroller having the same
Publication Date: 2024.10.22 WONDERLAND SWITZERLAND AG
  • US12122442B2 patent drawing
  • US12122442B2 patent drawing
  • US12122442B2 patent drawing

AI summary

The disclosure provides a stroller frame locking mechanism and a stroller having the same. The stroller frame comprises a stroller handle, a front wheel bracket, and a rear wheel bracket, both the front wheel bracket and the rear wheel bracket being pivotally connected to the stroller handle. The stroller frame locking mechanism comprises: a support assembly supported between the front wheel bracket and the rear wheel bracket, the support assembly comprising a first support member and a second support member pivotally connected to each other, the first support member being pivotally connected to the front wheel bracket, and the second support member being pivotally connected to the rear wheel bracket; and a locking device arranged to lock or unlock the support assembly, such that the first support member and the second support member is unable to pivot or able to pivot in respect to each other.