Stroller Seat Attachment Reversible Conversion Mechanism

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Solution Overview

Problem

Parents face inconvenience in transporting multiple children due to the size and maneuverability issues of double strollers, and the need for multiple strollers when only one child is present, as existing solutions either compromise comfort or increase storage challenges.

Innovation Solution

A seat attachment for strollers that allows a single stroller to be reversibly converted into a double stroller, featuring a connector portion and wheel support frame with a folding mechanism and locking mechanism, enabling secure and convenient attachment and detachment of additional seats without increasing the stroller's size or storage requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a double stroller is used to transport two children, then the capacity to accommodate multiple children is improved, but the size and maneuverability deteriorate

Engineering Contradiction:
Improvecapacity to accommodate childrenVSAvoidsize of stroller
Core Design Contradiction:
Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The stroller system is divided into a base single stroller unit and a separate convertible attachment. The attachment can be configured with one or two seats, allowing the parent to segment the capacity based on immediate needs. When only one child is present, the attachment can be removed or configured with a single seat, maintaining a compact size. When two children need transport, the second seat is added to the attachment, providing double stroller capacity without permanently increasing the stroller's base size.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If a double stroller is used to transport two children, then the capacity to accommodate multiple children is improved, but the storage requirements worsen

Engineering Contradiction:
Improvecapacity to accommodate childrenVSAvoidstorage space required
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The attachment is designed with dynamic configurability, allowing it to be assembled in different configurations (single seat, double seats, or removed entirely) based on the number of children being transported. This dynamic adaptation means the storage space required varies with usage needs rather than requiring maximum space to be allocated for all possible scenarios. The attachment folds or detaches to a compact form when not in use or when only single-child capacity is needed.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If multiple strollers are purchased to handle different scenarios, then the adaptability to different situations is improved, but the storage and management complexity worsens

Engineering Contradiction:
Improveadaptability to different situationsVSAvoidnumber of strollers to manage
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The attachment is designed as a universal solution that can be attached to the base stroller to create either single-child or double-child capacity configurations. This single attachment system replaces the need for multiple separate strollers, as it can be configured for different scenarios (one child or two children) while using the same base unit. The attachment includes components that allow flexible configuration without requiring parents to manage multiple separate stroller systems.

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

4Adaptability or versatility

If existing attachment solutions are used to add a second seat, then the capacity to accommodate two children is improved, but the comfort and convenience deteriorate

Engineering Contradiction:
Improvecapacity to accommodate childrenVSAvoidcomfort and convenience
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The attachment includes an intermediary handlebar structure that connects the two seats and provides a central connection point for parent control. This intermediary structure allows the parent to steer and control both seats from a central position, improving ergonomics and control compared to existing solutions where the second seat hangs behind and interferes with handlebar access. The intermediary framework also provides structural support that enhances comfort for both children while maintaining ease of operation for the parent.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP2370303B1Seat attachment for a stroller
Publication Date: 2017.07.19 BABY JOGGER LLC
  • EP2370303B1 patent drawingFigure 1~2
  • EP2370303B1 patent drawingFigure 3~4
  • EP2370303B1 patent drawingFigure 5

AI summary

The invention relates to a seat attachment for a stroller, single stroller and double strollers. Such a seat attachment may be used to reversibly convert a single stroller into a double stroller. More specifically, versions of the seat attachment relate to a seat attachment for a stroller capable of supporting a seat such as, but not limited to, a stroller seat, a baby seat, bassinet, a pram, a car seat, or a baby carrier, for example. The seat may be supported in front of a permanent seat of the stroller.