Rotary Positioning Adjustment Device for Curtain Systems

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Solution Overview

Problem

Traditional manual shutters with drawstrings pose risks of injury to children and are prone to damage due to uneven force application, and existing positioning adjustment mechanisms for roller shutters have poor positioning accuracy and low versatility.

Innovation Solution

A rotary positioning adjustment device comprising a shaft sleeve, connecting rod, reel, and torsion springs, with a power storage assembly and screw structure, that provides accurate and stable curtain positioning, enhancing the service life and versatility of the shutter system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional manual drawstring is used for shutter adjustment, then the shutter can be adjusted manually, but it causes accidental injury to children and damages the curtain due to uneven force application

Engineering Contradiction:

Improvemanual adjustmentVSAvoidinjury to children and curtain damage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent removes the traditional drawstring mechanism from the shutter system and replaces it with a rotary adjustment mechanism. The harmful drawstring element is extracted and replaced with a safe rotary control that eliminates the risk of injury to children while maintaining manual adjustment capability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a rotary casing with a rotary adjustment mechanism as an intermediary between the user's manual operation and the curtain adjustment function. This intermediary mechanism transforms manual pulling motion into controlled rotary motion, eliminating direct force application on the curtain that causes damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a positioning adjustment mechanism without drawstring is used, then child safety is improved, but the positioning effect is poor and versatility is low

Engineering Contradiction:

Improvechild safetyVSAvoidpositioning accuracy

Core Design Contradiction:

Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The patent replaces the traditional mechanical drawstring positioning system with a rotary mechanism that uses a rotary casing and adjustable damping mounting seat. This substitution provides precise positioning control through rotary adjustment while maintaining child safety by eliminating the drawstring component.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces adjustable damping parameters through the mounting seat mechanism, allowing modification of the positioning characteristics. This enables optimization of positioning accuracy and adaptability to different curtain types, thereby improving both precision and versatility.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If a positioning adjustment mechanism is used, then curtain positioning can be achieved, but the service life is reduced due to damage from user force

Engineering Contradiction:

Improvepositioning capabilityVSAvoidservice life

Core Design Contradiction:

Measurement precisionVSDuration of action of stationary object

Solution Approach 1:

The patent incorporates a damping spring in the mounting seat that provides beforehand cushioning against excessive user force. This damping mechanism absorbs excess energy and prevents force spikes from damaging the positioning mechanism, thereby extending the service life while maintaining positioning capability.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent uses a damping spring as a sacrificial element that can be replaced if worn. This inexpensive component absorbs the impact of user force and protects the more critical positioning mechanism, effectively extending the overall service life through a replaceable wear element.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 device achieves precise and stable curtain positioning, ensuring safety and longevity by combining the action of first and second torsion springs with a screw structure, allowing for adjustable tightness and improved usability.

Implementation Method 1

a first torsion spring and a second spring seat in sequence; the first spring seat is sleeved on the rotary casing; the first torsion spring is installed within the second spring seat

Methodology Applied

Scientific EffectTorsion spring: Torsion Spring

Implementation Method 2

a power storage assembly comprises a power input piece, a second torsion spring and a power output piece

Methodology Applied

Scientific EffectSpring: Spring

Data Source

PatentUS11970902B2Rotary positioning adjustment device and curtain with the same

Publication Date: 2024.04.30 LANTEX WINDOW FASHIONS CO LTD

AI summary

A rotary positioning adjustment device includes a shaft sleeve and a connecting rod. A reel is fixedly connected with an end of the connecting rod; a fixed seat is sleeved on the connecting rod; the reel is arranged in the fixed seat; and a power storage assembly is installed in the shaft sleeve. The power storage assembly includes a power input piece, a second torsion spring and a power output piece; a first support leg of the second torsion spring is connected in a hooked mode with one side of an input block of the power input piece, and a second support leg of the second torsion spring is connected in a hooked mode with the other side of the input block. A curtain includes the rotary positioning adjustment device.