Stroller Frame Slide Sleeve Collapsible Mechanism

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Solution Overview

Problem

Conventional stroller frames are complex and difficult to assemble and manipulate due to their configuration with pivotally connected link rods and latch systems, making them cumbersome for expansion and collapse.

Innovation Solution

A stroller frame design featuring a slide sleeve movably mounted on a front supporter, a foldable supporter with pivotally connected front and rear folding tubes, and a link rod that connects the slide sleeve to the foldable supporter, allowing for easy expansion and collapse by engaging or disengaging the slide sleeve, which simplifies assembly and manipulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional stroller frames use pivotally connected link rods and latch systems, then the frame can be converted between expanded and collapsed positions, but the assembly and manipulation become complicated and difficult

Engineering Contradiction:
Improveconvertibility between expanded and collapsed positionsVSAvoidassembly and manipulation complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent removes the complex latch system and hinge mechanisms from the stroller frame. Instead of using traditional pivotally connected link rods with latches, the invention extracts these complicated components and replaces them with a simplified telescopic tube structure that achieves the same expandable and collapsible functionality through direct insertion and retention mechanisms, thereby reducing assembly and manipulation complexity while maintaining convertibility

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The stroller frame is divided into separate telescopic tube segments that can independently extend and retract. Each tube is segmented into nested sections that slide within one another, allowing the frame to be easily assembled by connecting segments and collapsed by telescoping them together, simplifying both assembly and manipulation compared to integrated rigid structures

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If conventional stroller frames use complex hinge and latch mechanisms, then position conversion is possible, but the assembly process becomes difficult

Engineering Contradiction:
Improveposition conversion capabilityVSAvoidassembly ease
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent extracts and eliminates the complex hinge and latch mechanisms from the design. The position conversion capability is achieved through a simpler telescopic tube system with retention features, reducing the number of parts that need to be assembled and simplifying the manufacturing process while maintaining the ability to convert between expanded and collapsed positions

Inventive Principle:
Principle #2Taking out (Extraction)

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 facilitates easier assembly and efficient conversion between expanded and collapsed positions, reducing the complexity and effort required for stroller use.

Implementation Method 1

a slide sleeve (3) movably mounted on the front supporter (1)

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS7267359B1Collapsible stroller frame
Publication Date: 2007.09.11 LINK TREASURE LTD
  • US7267359B1 patent drawing
  • US7267359B1 patent drawing
  • US7267359B1 patent drawing

AI summary

A collapsible stroller frame capable of being either collapsed or expanded with a rod set, wherein a slide sleeve is located at a front supporter of the stroller frame and a foldable supporter is pivotally connected between the front supporter and a rear supporter. A link rod connects the slide sleeve and the foldable supporter, and is pivotally connected between the front and rear supporter. The foldable supporter includes a front folding tube and a rear folding tube, pivotally connected to each other. A user can operate the foldable supporter to shorten the distance between the front and rear folding tubes, by disengaging the slide sleeve from the frame, thereby facilitating assembly and folding of the stroller.