Removable Stroller Seat Attachments for Single-to-Double Conversion

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Solution Overview

Problem

Existing double seat strollers are cumbersome and difficult to maneuver, and single seat strollers become inefficient when only one child is present, while current adjustable strollers have safety hazards and loseable covers.

Innovation Solution

A removable seat attachment system for strollers that converts a single stroller into a double stroller, featuring pivotable and lockable connectors, wheels, and secure cover mechanisms, allowing easy conversion and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a permanently fixed double seat stroller is used, then two children can be transported simultaneously, but the stroller becomes substantially larger and more difficult to maneuver through doorways and down aisles

Engineering Contradiction:

Improvecapacity to transport two childrenVSAvoidmaneuverability through doorways and aisles

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The double seat stroller is divided into two independent seat units that can be attached or separated. Each seat can be independently positioned and secured to the stroller frame, allowing the parent to configure the stroller for one or two children based on needs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The stroller configuration is made dynamic through removable and reconfigurable seat attachments. The seats can be easily attached and detached from the frame, transforming the stroller from a fixed double-seat configuration to a flexible single-seat or empty configuration as needed.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a permanently fixed double seat stroller is used, then two children can be accommodated at one time, but unnecessary space is taken up and safety hazards are created when only one child is present

Engineering Contradiction:

Improveaccommodation of multiple childrenVSAvoidsafety hazards and space waste

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The stroller system is segmented into independent functional modules (frame, seats, attachments) that can be configured according to actual usage needs, eliminating the need to accommodate unused seats that create safety hazards.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

When only one child is present, the second seat attachment can be removed and stored, eliminating potential safety hazards associated with unused seats while maintaining the option to add it back when needed.

Inventive Principle:

Principle #34Discarding and recovering

3Adaptability or versatility

If current adjustable stroller attachments are used, then the stroller can be modified from single to double seat, but the attachments are permanently affixed and take up space when not in use

Engineering Contradiction:

Improvemodification from single to double seatVSAvoidspace occupation when not in use

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The attachment system transitions from permanently affixed to dynamically reconfigurable, allowing the second seat attachment to be easily added or removed based on whether two children need to be transported, thus eliminating unnecessary space occupation.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If current adjustable stroller attachments are used, then the stroller can be converted to double seat, but the covers are detachable and can be easily lost

Engineering Contradiction:

Improveconversion capabilityVSAvoidcover retention

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The cover is merged with the seat attachment mechanism as an integrated component rather than a separate detachable part. The cover is designed to be retained by the attachment structure itself, preventing loss while maintaining the conversion capability from single to double seat configuration.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250214641A1Removable seat attachment for a stroller

Publication Date: 2025.07.03 BABY JOGGER II LLC

AI summary

A stroller is provided with the ability to removably couple and decouple a seat from the stroller as needed. The stroller can include a stroller frame. The stroller can also include one or more front wheels attached to the stroller frame and one or more rear wheels attached to the stroller frame. The stroller can also include a first seat coupled to the stroller frame. The stroller can include first and second seat attachment housings. Each of the seat attachment housings can include a cavity for receiving a corresponding one of the first and second seat attachment adapters. Each of the seat attachment housings can also include a door cover to prevent access to the respective cavity when not in use. The seat attachment adapters can be coupled to the respective seat attachment housings and a second seat can be coupled to the seat attachment adapters.