Retractable Curtain Cord Adjusting Device and Stopper Mechanism

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Solution Overview

Problem

Existing retractable curtains face challenges in adjusting the length of the cord to balance the curtain and accommodate varying weights, leading to potential unbalanced curtain heights and inconvenient length adjustments.

Innovation Solution

An adjusting device for curtain cords, featuring a mounting base with a threading hole and a detachable stopper with a winding hole, allows for convenient adjustment of the cord length by winding and fixing the cord within a mounting groove, enabling easy adjustment of the cord's length passing through the curtain body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the cord length is adjusted by changing the connection position between the lower end of the cord and the curtain, then the cord length can be adjusted to balance the curtain, but the adjustment process is complex and inconvenient

Engineering Contradiction:

Improveconvenience of cord length adjustmentVSAvoidcomplexity of adjustment mechanism

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The mounting base is divided into a groove body and a detachable stopper component. The stopper can be independently removed and repositioned within the groove to adjust cord length, simplifying the adjustment operation while maintaining structural integrity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The stopper is designed to be detachable and movable within the mounting groove, allowing dynamic repositioning to adjust cord length. This dynamic structure enables easy adjustment without complex mechanisms.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If the cord length is adjusted to accommodate different curtain weights, then the curtain balance can be optimized, but the adjustment process requires visual inspection and precise positioning which is time-consuming

Engineering Contradiction:

Improveprecision of cord length adjustmentVSAvoidtime required for cord length adjustment

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The stopper is pre-positioned at different locations within the mounting groove during manufacturing, providing predetermined adjustment positions. This allows quick selection of appropriate cord length without time-consuming visual inspection and measurement.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The stopper is designed as a simple, inexpensive component that can be easily replaced or repositioned. Multiple stoppers with different positions can be provided, allowing quick replacement rather than precise measurement and adjustment.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS10689904B2Adjusting means for curtain cord and retractable curtain

Publication Date: 2020.06.23 SUZHOU HONGREN WINDOW DECORATIONS

AI summary

The present disclosure provides an adjusting device for a curtain cord and a retractable curtain. The adjusting device for a curtain cord comprises a mounting base for fixedly connecting to the lower end of the curtain body, the mounting base is provided with a first threading hole for the cord to pass through, the mounting base is provided with a mounting groove thereon, the first threading hole is provided on the groove wall of the mounting base, and the adjusting device further comprises a stopper for winding and fixing the cord, a winding hole is provided throughout in the middle of the stopper for the cord to pass through, the stopper is detachably jammed within the mounting groove, and a gap for accommodating the cord wound on the outer surface of the stopper is located between the groove wall of the mounting groove and the stopper.