Sliding Seat Mount for Compact Multi-Child Strollers

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Solution Overview

Problem

Existing stroller apparatuses with multiple seats have large frame structures that are difficult to maneuver, store, and transport, and the seats are often far from the caregiver, limiting interaction.

Innovation Solution

A child stroller apparatus with a mount system featuring pivotally connected frames and sliding adapters that allow for the installation of detachable child seats or baskets, enabling flexible positioning and adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple seats are installed at fixed positions on the stroller frame, then the stroller can transport one or more children, but the frame structure becomes very large and difficult to maneuver, store and transport

Engineering Contradiction:
Improvecapacity to transport multiple childrenVSAvoidmaneuverability and storability
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent implements dynamic positioning of seats by allowing them to be moved along the frame to adjustable positions. The seat mounting structure includes sliding mechanisms that enable the seats to be repositioned along the longitudinal axis of the frame, transforming the static fixed-position configuration into a dynamic adjustable system. This resolves the contradiction by maintaining multi-child capacity while allowing the frame structure to be optimized for compact storage when seats are positioned closer together.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If seats are installed at fixed positions far from the caregiver, then the stroller can accommodate multiple children, but interaction between the child and the caregiver is limited

Engineering Contradiction:
Improvemulti-child transportation capabilityVSAvoidcaregiver-child interaction
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent enables dynamic adjustment of seat positions relative to the caregiver by providing multiple mounting positions along the frame. The caregiver can reposition seats to optimize interaction distance, allowing close positioning when interaction is needed while maintaining the capability to transport multiple children. This transforms the fixed far-position configuration into an adjustable system that adapts to interaction requirements.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the stroller frame is designed to accommodate multiple seats, then transportation capacity is improved, but the overall device complexity and difficulty of operation increases

Engineering Contradiction:
Improvemulti-seat configuration capabilityVSAvoidframe structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the seat mounting system into modular components: standardized mounting brackets, adjustable positioning mechanisms, and interchangeable seat units. This modular segmentation allows multiple seats to be accommodated through repeated modular units rather than a complex integrated structure, reducing overall device complexity while maintaining multi-seat capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements universality through a standardized mounting system that can accommodate different seat types and configurations using the same frame attachments. The universal mounting brackets and positioning mechanisms serve multiple functions: securing seats, adjusting positions, and enabling easy removal/installation. This multi-functionality reduces the need for specialized components for each seating configuration, thereby reducing device complexity.

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

Data Source

PatentEP3590788B1Child stroller apparatus
Publication Date: 2026.02.11 WONDERLAND SWITZERLAND AG
  • EP3590788B1 patent drawingFigure 1
  • EP3590788B1 patent drawingFigure 2
  • EP3590788B1 patent drawingFigure 3

AI summary

A child stroller apparatus (100) includes a standing frame (102), a push handle frame (108) having a side segment (108A) that is pivotally connected with the standing frame (102) via a pivot connection (118), an adapter (132) having a coupling portion (132A) configured to receive the installation of a detachable part, the adapter (132) being fixedly connected with a handle (160), the handle (160) having a cavity through which is slidably disposed the side segment (108A) so that the handle (160) and the adapter (132) are slidable in unison along the side segment (108A) for adjustment, and a locking mechanism (170) for locking the adapter (132) in position on the side segment (108A).