Rotatable Child Safety Seat Angle Lock for Incorrect Adjustment

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Solution Overview

Problem

Conventional child safety seats have complex misuse preventing structures that are difficult to produce and do not effectively prevent incorrect adjustments, which can compromise the safety of children during car travel.

Innovation Solution

A rotatable child safety seat with a simple misuse preventing mechanism that includes a lock member and a restraining groove on the installation bracket, allowing the carrier body to rotate within a specific range to prevent incorrect adjustments, while also allowing for full rotation for older children.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional misuse preventing structure is disposed between the carrier body and the installation bracket, then incorrect adjustment can be prevented, but the structure becomes complicated and difficult to produce

Engineering Contradiction:

Improveprevention of incorrect adjustmentVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The misuse preventing mechanism is segmented into two independent components: a lock member disposed on the base and a restraining groove formed on the installation bracket. This segmentation simplifies the overall structure while maintaining the prevention function, as each component can be manufactured separately and assembled easily.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The restraining function is extracted from the installation bracket alone and implemented through a dedicated restraining groove. The lock member is taken out as a separate drivable component that extends into or ejects from the groove, separating the restraining function from complex mechanical structures.

Inventive Principle:

Principle #2Taking out (Extraction)

2Adaptability or versatility

If the carrier body is allowed to rotate freely with respect to the installation bracket, then older children can adjust the seat comfortably, but younger children may be subjected to incorrect adjustment

Engineering Contradiction:

Improverotation adjustment flexibilityVSAvoidincorrect adjustment risk

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The misuse preventing mechanism transitions from a static restraining structure to a dynamic system. The lock member can be driven to extend into the restraining groove to restrict rotation for young children, or ejected from the groove to allow full rotation for older children. This dynamic adjustment enables the system to adapt to different age groups and safety requirements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The rotation angle parameter of the carrier body is changed based on the state of the lock member. When the lock member extends into the restraining groove, the rotation angle is limited to a specific range. When the lock member ejects from the groove, the rotation angle can vary freely. This parameter change allows the system to provide appropriate rotation freedom while preventing incorrect adjustment.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12269380B2Misuse preventing mechanism and rotatable child safety seat

Publication Date: 2025.04.08 WONDERLAND SWITZERLAND AG

AI summary

A misuse preventing mechanism (1) is disposed on a rotatable child safety seat (100). The rotatable child safety seat has a base (13) and an installation bracket (3) coupled to the base (13) and configured to support a carrier body (2). The installation bracket (3) is capable of rotating with respect to the base (13) and has a restraining groove (31). The misuse preventing mechanism (1) includes a lock member (11) disposed on the base (13) and driven to restrain a rotation angle of the carrier body (2).