Convertible Car Seat-Stroller With Foldable Wheels and Handle

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional convertible car seats are not designed for use outside vehicles and require separate strollers, leading to increased costs and space occupation in vehicles, as well as inconvenience during travel due to the need to transfer children between car seats and strollers.

Innovation Solution

A convertible car seat device that can transition from a conventional car seat to a stroller by unfolding its handle and wheels, allowing it to be used both inside and outside vehicles, eliminating the need for a separate stroller and optimizing space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If parents purchase both a convertible car seat and a stroller, then the child can be transported both inside and outside the vehicle, but the cost increases and space occupation in the vehicle increases

Engineering Contradiction:

Improvemulti-functionalityVSAvoidnumber of devices

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent combines a car seat and stroller into a single integrated device. The car seat assembly includes a seat, backrest, and base that can function as a car seat, while also incorporating foldable legs with wheels that transform the assembly into a stroller. This merging eliminates the need for separate car seat and stroller devices, directly resolving the contradiction between versatility and quantity of devices.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The car seat assembly is designed to perform multiple functions: it can be used as a car seat for vehicle travel, transformed into a stroller for outdoor use, and even function as a portable seat when detached from the base. The foldable legs with wheels enable stroller functionality, while the harness system and base provide car seat functionality. This multi-functionality directly addresses the contradiction by making one device serve multiple purposes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If both a convertible car seat and a stroller are carried in the vehicle, then the child can be transported both inside and outside the vehicle, but the space occupation in the vehicle increases

Engineering Contradiction:

Improvemulti-functionalityVSAvoidspace occupation

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If the child is transferred from the car seat to the stroller, then the child can be moved from vehicle to outdoor location, but the disturbance causes the child to become cranky or irritable

Engineering Contradiction:

Improveconvenience of transferVSAvoidtransfer time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If a convertible car seat is designed with foldable legs and wheels for stroller conversion, then the device can be used outside the vehicle, but the device complexity increases

Engineering Contradiction:

Improvemulti-functionalityVSAvoidstructural complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The stroller functionality is achieved by adding segmented, foldable leg assemblies with wheels that can be deployed independently. These legs are connected to the car seat base through pivot joints, allowing them to be folded during car seat use and extended for stroller use. This segmentation allows the complex stroller features to be added without permanently complicating the car seat structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The legs are designed to be dynamically adjustable - foldable during car seat mode and extendable for stroller mode. This dynamic capability allows the structure to adapt its complexity based on usage mode, maintaining simplicity when needed and providing functionality when required.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20240409146A1Convertible Car Seat and Stroller Device

Publication Date: 2024.12.12 BAZAN MARIA

AI summary

A convertible car seat device is disclosed that can be transformed from a car seat to a stroller. The device comprises a seat disposed within a frame, a pair of front wheels, a pair of rear wheels, a supporting member, a pivoting handle, and a wheel supporting member disposed in a bottom of the frame. The handle, the rear wheels, and the front wheels are foldable to use the device as a conventional car seat device inside a vehicle and are extendable to use the device as a stroller. The front wheels are folded and secured along a bottom portion of the sides of the frame and the rear wheels are folded and secured along a top portion of the sides of the frame. The device saves space in the vehicle by obviating the need to travel with separate car seat and stroller.