Child Safety Seat Angle Locking With Integrated Support Plate Adjustment

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Solution Overview

Problem

Existing child safety seats lack effective mechanisms for adjusting the seat angle and support plate position, which can lead to instability and reduced comfort during use.

Innovation Solution

A seat angle adjustment mechanism with an unlocking operating member, connecting member, and angle locking structure allows for adjustable seat angles and support plate positions, featuring sliding elements, locking elements, and elastic elements for easy operation and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a support plate is provided on the front end of the child safety seat, then the child safety seat is prevented from being overturned, but the seat angle adjustment mechanism becomes more complex

Engineering Contradiction:

Improvestability of child safety seatVSAvoidcomplexity of seat angle adjustment mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The support plate adjustment mechanism is merged with the seat angle adjustment mechanism by using a single operating member (421) that controls both the support plate position and the seat angle through a connecting member (422) that links to the engaging pin (4241). This integration reduces overall system complexity while maintaining both functions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The operating member (421) serves multiple functions: it adjusts the support plate extension position and simultaneously controls the seat angle adjustment. This multi-functionality reduces the number of separate mechanisms needed, thereby reducing complexity while improving reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If the unlocking operating member is provided on the support plate, then the support plate position can be adjusted, but the structure becomes more complex

Engineering Contradiction:

Improveease of support plate adjustmentVSAvoidcomplexity of locking structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The operating member (421) combines the support plate adjustment function with the seat angle adjustment function into a single control mechanism. The connecting member (422) transmits the operating force from the support plate area to the angle locking structure, merging two adjustment functions into one operational interface.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The connecting member (422) acts as an intermediary that transmits the adjustment force from the operating member (421) to the engaging pin (4241). This intermediary mechanism allows the single operating member to control both the support plate position and seat angle without requiring separate complex control systems.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If multiple locking positions are provided for the seat part, then the seat angle can be customized, but the locking structure becomes more complex

Engineering Contradiction:

Improvecustomizability of seat angleVSAvoidcomplexity of angle locking structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The angle locking structure is segmented into discrete locking positions through multiple engaging holes (510) provided on the base (500). The engaging pin (4241) can engage with different engaging holes to provide multiple fixed angle positions. This segmentation approach provides customizable angles while keeping the locking mechanism relatively simple through standardized hole-pin engagement.

Inventive Principle:

Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances the stability and comfort of child safety seats by allowing customizable seat angles and support plate positions, accommodating various vehicle models and providing enhanced safety and leg space for children.

Implementation Method 1

The reset member is provided between the unlocking operating member and the support plate, and configured to bias the unlocking operating member towards the locking position

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

The engaging reset member is provided between the seat part and the engaging pin to bias the engaging pin towards a corresponding one of the engaging holes

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250353412A1Seat angle adjustment mechanism, support plate, and child safety seat

Publication Date: 2025.11.20 WONDERLAND SWITZERLAND AG

AI summary

The present disclosure provides a seat angle adjustment mechanism, a support plate and a child safety seat. The seat angle adjustment mechanism is provided adjusting an angle of the seat part with respect to the base. The seat angle adjustment mechanism includes an unlocking operating member, a connecting member and an angle locking structure. The unlocking operating member is operated to move between an unlocking position and a locking position. The angle locking structure is provided to lock or unlock the seat part with respect to the base. When the unlocking operating member is in the locking position, the seat part is positioned with respect to the base. When the unlocking operating member is in the unlocking position, the seat part is slidable with respect to the base.