Foldable Sleeping Basket Frame for Compact Stroller Folding

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Solution Overview

Problem

Existing foldable sleeping baskets for strollers have issues with space occupation due to a larger opening angle at the end of the pole away from the folding joint and are prone to damage the cloth cover during folding, making them cumbersome and unsafe.

Innovation Solution

A foldable sleeping basket design with a three-section lower frame and a foldable assembly that allows for compact folding by rotating and connecting frames via bendable and connecting rods, featuring a locking mechanism for stability and an unlocking mechanism for ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the sleeping basket is folded using a two-stage folding mechanism, then the sleeping basket can be folded lengthwise, but the end of the pole farthest from the folding joint has a larger opening angle occupying additional space

Engineering Contradiction:

Improvefolding spaceVSAvoidopening angle at pole end

Core Design Contradiction:

Volume of moving objectVSShape

Solution Approach 1:

The lower frame is divided into three separate sections (first lower frame, second lower frame, and third lower frame) that can fold independently. This segmentation allows each section to be compacted more effectively, reducing the overall opening angle at the pole end compared to traditional two-stage mechanisms.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a third folding dimension by adding the third lower frame section. Instead of merely folding in two stages along one axis, the three-section design enables folding along multiple axes, creating a more compact three-dimensional configuration that reduces the opening angle at the pole end.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If forcible compression is applied to fold the sleeping basket, then the folding process can be completed, but the cloth cover at the joints may be damaged

Engineering Contradiction:

Improvefolding operationVSAvoiddamage to cloth cover

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates cushioning elements at the joints where the cloth cover contacts the frame structures. These cushioning components are pre-installed to protect the cloth cover from damage during the folding process, eliminating the need for forcible compression that would otherwise harm the cover.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent introduces intermediary protective components between the rigid frame joints and the soft cloth cover. These intermediaries act as mediators that absorb the mechanical stress during folding, preventing direct contact between the rigid frame and the cloth cover, thus avoiding damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the rod is manually operated to release the support between the top and bottom frames, then the folding can be initiated, but the process becomes cumbersome

Engineering Contradiction:

Improvefolding initiationVSAvoidmanual operation process

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent designs the folding mechanism to be self-activating through weight distribution. When the user releases the locking mechanism, the natural weight of the folded sections causes them to collapse into the compact position automatically, eliminating the need for manual rod operation to initiate folding.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent employs dynamic locking and releasing mechanisms that respond to minimal user input. The locking mechanism transitions from a static locked state to a dynamic unlocked state with simple user action, allowing the system to then complete the folding motion dynamically through its own structural properties rather than requiring continuous manual operation.

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The design reduces space occupation and minimizes damage to the cloth cover, providing a safer and more stable folding mechanism for the sleeping basket.

Implementation Method 1

The first upper frame and the second upper frame can be respectively folded towards each other via the rotating point at the connection with the first bendable part

Methodology Applied

Scientific EffectRotation:

Implementation Method 2

When the first upper frame and the second upper frame are folded towards each other, the first lower frame and the second lower frame are folded towards each other driven by the first foldable part and the second foldable part

Methodology Applied

Scientific EffectMechanical Advantage:

Data Source

PatentUS20260077796A1Foldable Sleeping Basket and Stroller Comprising Same

Publication Date: 2026.03.19 ZHEJIANG JINHUA SNOWBABY BABY ITEMS MANUFACTURING CO LTD

AI summary

An apparatus and assembly including a foldable sleeping basket such as used for a child to sleep, and which can include a stroller such as used to transport a child. The sleeping basket can include a plurality of frame sections coupled to folding members in an upper and a lower frame thereof. The folding sleeping basket can be mechanically secured to said stroller in some aspects.