Ball Rotor Mechanism for Roller Window Net Alignment

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Solution Overview

Problem

Conventional roller-type window nets require precise handling to open and close, often resulting in malfunction or breakdown due to inclination issues, particularly inconvenient for children and the elderly.

Innovation Solution

A device featuring a ball rotor mechanism with a spring coupling and guide jaw system that allows easy rotation and alignment of the wire mesh, eliminating the need for precise handling and ensuring proper rolling without inclination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the handle frame is pressed exactly at the central part or both lateral parts, then the window net can be fixed in its operating position and opened while rolling up both sides at the same time, but the operation becomes difficult and inconvenient for children and the elderly

Engineering Contradiction:
Improveproper rolling without inclinationVSAvoidhandling difficulty
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

A guide rail system acts as an intermediary mechanism between the user's pulling action and the window net. The guide rail includes a groove that guides the lateral ends of the window net, ensuring they roll up simultaneously and preventing inclination during operation, while the user simply pulls the handle frame without needing to press specific points

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The window net system performs self-alignment and self-correction through the guide rail mechanism. When the user pulls the handle frame, the guide rail automatically ensures both lateral ends roll up at the same time and maintain proper positioning, eliminating the need for user skill or precision in operation

Inventive Principle:
Principle #25Self-service

2Ease of operation

If the handle frame is pressed at wrong positions, then the operation becomes easier, but the window net rolls up in an inclined or crooked state resulting in malfunction or breakdown

Engineering Contradiction:
Improvehandling easeVSAvoidmalfunction risk
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The guide rail serves as a protective intermediary that prevents wrong positioning from causing malfunction. The groove in the guide rail physically constrains the lateral ends of the window net, ensuring they follow the correct path during rolling up, so even if the user pulls at any position on the handle frame, the window net will not roll up inclined or crooked

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The guide rail system provides beforehand protection against operational errors. By pre-establishing the correct rolling path through the groove structure, it cushions against the harmful effect of incorrect handle pressing positions before they can cause inclination or malfunction

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Device complexity

If a conventional window net structure is used, then the structure is simple, but the installation and production cost is high due to the need for precise handling mechanisms

Engineering Contradiction:
Improvestructure simplicityVSAvoidproduction cost
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

The guide rail acts as a simple intermediary component that provides complex functionality (ensuring simultaneous rolling of both sides and preventing inclination) without requiring complex mechanisms. The guide rail with its groove is a simple structural element that can be easily manufactured and installed, yet it solves the precision handling problem

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The guide rail performs multiple functions simultaneously: it guides the lateral ends of the window net, ensures they roll up at the same time, prevents inclination during operation, and provides structural support. This multi-functionality in a single simple component reduces the need for multiple separate mechanisms, lowering production and installation costs

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

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

Enables convenient and reliable operation of roller-type window nets, allowing any user to easily open and close the mesh without inclination, reducing installation and production costs through a simple structure.

Implementation Method 1

a ball rotor (18) including a front portion coupled by means of a spring (30)

Methodology Applied
Scientific EffectSpring coupling: Spring

Implementation Method 2

an outer rotor (42) having a rotation groove (44) formed in an internal circumferential surface thereof

Methodology Applied
Scientific EffectMechanical guidance: Guided Rotor Compressor

Data Source

PatentUS10428579B2Device for stopping, releasing and restoring the position of roller-type window nets
Publication Date: 2019.10.01 FANDIS
  • US10428579B2 patent drawing
  • US10428579B2 patent drawing
  • US10428579B2 patent drawing

AI summary

A device (1) is described for stopping, releasing and restoring the position of roller-type window nets (3, 48), comprising: a fixing shaft (13) having a coupling groove (15) formed in a front external circumferential surface thereof and an insertion groove (16) formed in a rear surface thereof; a ball rotor (18) inserted into the fixing shaft (13) and coupled to the external circumferential surface of the fixing shaft (13), including a front portion coupled by means of a spring (30) and having a conveying groove (20) formed in a surface thereof for conveying a ball (40) and a guide jaw (38) formed in a central part thereof, wherein the ball (40) is inserted into the conveying groove (20); and an outer rotor (42) coupled to the conveying groove (20) via the ball (40) and having a rotation groove (44) formed in an internal circumferential surface thereof, wherein the ball (40) is coupled to the rotation groove (44) to rotate.