Convertible bed and seat assembly for a sliding carriage

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Solution Overview

Problem

Existing reclining and sitting arrangements for strollers are limited in length, making them unsuitable for transporting children beyond a certain height, and require additional safety features that increase costs.

Innovation Solution

A reclining and sitting arrangement with a detachable third support section that extends beyond the frame, allowing for a longer support suitable for larger toddlers, and includes adjustable straps for varying positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the frame length is increased to accommodate taller children, then the usability range is extended, but the cost increases due to higher safety requirements under EU standard EN 1888

Engineering Contradiction:
Improveusability rangeVSAvoidcost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The support is divided into a first support part suspended from the frame and a second support part detachably attached to the first support part. This segmentation allows the support to be extended beyond the frame length without requiring the entire frame to be longer, thus avoiding the cost increase associated with extended frame lengths while still accommodating taller children.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support configuration is made dynamic and adjustable through the detachable connection between the first and second support parts. The support can be adjusted to different positions and angles, allowing the same frame length to serve multiple height requirements, thereby extending usability without increasing frame length or cost.

Inventive Principle:
Principle #15Dynamics

2Length of stationary object

If the frame length is increased to accommodate taller children, then the support length is extended, but the frame structure becomes more complex and costly

Engineering Contradiction:
Improvesupport lengthVSAvoidframe structure
Core Design Contradiction:
Length of stationary objectVSDevice complexity

Solution Approach 1:

The support is segmented into two detachable parts, allowing the second support part to extend beyond the frame without requiring the frame itself to be longer or more complex. The frame structure remains standard length while the support achieves extended length through the detachable second support part.

Inventive Principle:
Principle #1Segmentation

3Length of stationary object

If a fixed long support is used to accommodate taller children, then the support length is sufficient, but the adaptability for different child sizes is reduced

Engineering Contradiction:
Improvesupport lengthVSAvoidadjustability
Core Design Contradiction:
Length of stationary objectVSAdaptability or versatility

Solution Approach 1:

The detachable connection between the first and second support parts enables dynamic adjustment of the support configuration. The support can be adjusted to different positions and angles, allowing the same support structure to adapt to various child heights and sizes, thereby maintaining both extended length and high adaptability.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3854269B1Convertible bed and seat assembly for a sliding carriage
Publication Date: 2025.11.19 TFK TRENDS FOR KIDS GMBHVERTRIEB VON KINDER TREND ARTIKELN
  • EP3854269B1 patent drawingFigure 1A~1B
  • EP3854269B1 patent drawingFigure 2A~2B
  • EP3854269B1 patent drawingFigure 2C

AI summary

A reclining and seating arrangement (100) and a carriage with such a reclining and seating arrangement (100) are described. The reclining and seating arrangement comprises: a frame (2); a support (1) with a first support part (11) and a second support part (12), which can be angled relative to each other and which are suspended from the textile fabric on the frame (2); and a third support part (13), which is arranged adjacent to the second support part (12), which is detachably attached to the frame (2) and which projects beyond the frame (2) at a lower end of the frame (2).