Child Carrier Frame Linkage Mechanism for Secure Retraction

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Solution Overview

Problem

Existing child carrying devices face issues with the connecting base being easily lost after detachment and the frame not remaining securely in a retracted state, leading to accidental deployment.

Innovation Solution

A child carrying device equipped with a connecting base retracting mechanism and a frame retraction locking mechanism. The connecting base retracting mechanism uses a linkage member and a drive member to ensure the connecting base retracts with the frame and deploys with it, while the frame retraction locking mechanism locks the frame in a retracted state using a fixing base and a retraction locking member.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the connecting base is made detachable from the frame, then the ease of operation is improved, but the reliability deteriorates as the connecting base can be easily lost after removal

Engineering Contradiction:
Improveease of attachment and detachmentVSAvoidrisk of losing connecting base
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connecting base and frame are merged into a single integrated structure where the connecting base cannot be separated from the frame. The frame includes a base portion with a receiving space that accommodates the connecting base, and a locking mechanism that secures the connecting base in place. This integration eliminates the risk of losing the connecting base while maintaining ease of operation through simple locking and unlocking actions.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If the frame is made foldable for convenient storage, then the ease of operation is improved, but the reliability deteriorates as the frame can be accidentally deployed when folded

Engineering Contradiction:
Improveconvenience of storage and carryingVSAvoidaccidental deployment of frame
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

A locking mechanism is provided that automatically engages when the frame is folded to prevent accidental deployment. The locking mechanism includes a locking member that can be manually actuated to secure the frame in its folded state, ensuring reliability before storage or carrying operations.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If the connecting base is made detachable, then the adaptability is improved for different configurations, but the loss of time increases due to frequent attachment and detachment operations

Engineering Contradiction:
Improveflexibility of configurationVSAvoidtime for attachment and detachment
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The connecting base is integrated with the frame into a unified structure that eliminates separate attachment and detachment operations. The integrated design maintains adaptability by allowing the frame itself to be configured in different states (folded/unfolded) while eliminating the time-consuming process of attaching and detaching separate connecting bases.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4552945A1Child carrying device
Publication Date: 2025.05.14 WONDERLAND SWITZERLAND AG
  • EP4552945A1 patent drawingFigure 1
  • EP4552945A1 patent drawingFigure 2
  • EP4552945A1 patent drawingFigure 3

AI summary

A child carrying device (1) includes: a frame (10); a connecting base (30) pivotally connected to the frame (10); and a connecting base retracting mechanism (50) connected between the frame (10) and the connecting base (30), and including a linkage member (520) and a drive member (5100) pivotally connected to each other, to allow the connecting base (30) to retract with retraction of the frame (10) and deploy with deployment of the frame (10). A first end (522) of the linkage member (520) is pivotally connected to a front leg assembly (130) of the frame (10), and a second end (524) of the linkage member (10) is pivotally connected to a handlebar assembly (120) of the frame (10); and a first end (512) of the drive member (10) is pivotally connected to the connecting base (30), and a second end (514) of the drive member (510) is pivotally connected to the linkage member (520). The child carrying device (1) according to the present disclosure can avoid loss of the connecting base (30) and ensure the retracted state of the frame (10) to avoid accident deployment.