Child Seat Carrying Handle Unlocking for Easy Uncoupling

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Solution Overview

Problem

Existing child seats lack enhanced operability in uncoupling from supporting devices, requiring manual operation of release portions like push buttons.

Innovation Solution

A child seat design featuring a movable and rotatable carrying handle that functions as an operating portion to transfer the coupling portion between locking and unlocking configurations, utilizing a guiding mechanism and blocking mechanism to facilitate tool-free uncoupling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a push button or release portion is used for uncoupling, then the coupling is secure, but the operation becomes complex and less convenient

Engineering Contradiction:
Improveease of uncouplingVSAvoidcomplexity of release mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The carrying handle is merged with the operating portion for the coupling mechanism. The handle itself becomes the actuating element that transfers movement to the coupling portion, eliminating the need for separate push buttons or release mechanisms. This integration simplifies the overall device structure while maintaining secure coupling functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The carrying handle serves multiple functions: it is used for carrying the child seat and simultaneously acts as the operating portion for unlocking and uncoupling the seat from the supporting device. This multi-functionality reduces the number of separate components needed and simplifies the user interface.

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

2Ease of operation

If the coupling mechanism is simplified for easy uncoupling, then operability improves, but the security and reliability of coupling may be compromised

Engineering Contradiction:
Improveease of uncouplingVSAvoidsecurity of coupling
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The coupling mechanism uses dynamic elements including a movable coupling portion that can transition between locked and unlocked states, and a blocking mechanism that dynamically engages or disengages based on the handle position. The blocking mechanism includes a blocking element that can be moved to prevent accidental uncoupling, providing security while allowing intentional uncoupling through handle movement.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If the carrying handle is made movable and rotatable, then operability is enhanced, but the device complexity increases

Engineering Contradiction:
Improveoperability of uncouplingVSAvoidcomplexity of guiding mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The connecting portion between the carrying handle and seat body is segmented into distinct functional elements: a guiding mechanism with guiding path, a blocking mechanism with blocking element, and the coupling portion. This segmentation allows each element to perform its specific function independently while working together as a coordinated system, making the complexity manageable and the operation intuitive.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4703198A1Child seat
Publication Date: 2026.03.04 THULE SWEDEN AB
  • EP4703198A1 patent drawingFigure 1~4
  • EP4703198A1 patent drawingFigure 5~6
  • EP4703198A1 patent drawingFigure 7~8

AI summary

The child seat comprises a seat body (10), a carrying handle (20) configured to be grasped by a user for carrying the child seat (1), and a coupling portion (100) for coupling said child seat (1) on a supporting device (2), for example on a car seat base or to a child carrier frame, such as a stroller frame. The coupling portion (100) is configured transferable between a locking configuration in which the coupling portion (100) is locked to the supporting device (2) and an unlocking configuration in which it is unlocked and removable from the supporting device (2). The coupling portion (100) is transferable into the unlocking configuration by moving, for example sliding or shifting, the carrying handle (20) relative to the seat body (10) along a guiding path from a locking position to an unlocking position.