Curtain Cutting Holder With Adjustable Locking Bar

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Solution Overview

Problem

Current curtain cutting methods are inefficient and labor-intensive, with unstable clamping forces causing bias or deformation, leading to increased costs and compromised appearance, especially when dealing with custom window sizes.

Innovation Solution

A curtain cutting aid comprising a curtain holder with a movable bar, operating knob, and elastic restoring member, allowing for precise adjustment and secure holding of the curtain during cutting, ensuring accurate and smooth cuts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a vise or fixation tool is used to hold down the curtain for cutting, then the convenience of the cutting operation is enhanced, but the time and labor required increases significantly

Engineering Contradiction:

Improveconvenience of cutting operationVSAvoidtime and labor required

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The curtain holder is designed to automatically clamp the curtain when the clamping handle is operated, eliminating the need for manual adjustment and securing operations. The spring-loaded mechanism self-adjusts to the curtain thickness and automatically locks into position, making the clamping process as simple as inserting the curtain and squeezing the handle.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The clamping mechanism transitions from a static vise to a dynamic spring-loaded system that automatically adjusts its clamping force. The spring mechanism provides continuous pressure adaptation, allowing the device to quickly secure curtains of varying thicknesses without requiring manual calibration or adjustment time.

Inventive Principle:

Principle #15Dynamics

2Productivity

If unstable clamping force is applied to the curtain, then the cutting operation can proceed, but the curtain becomes biased or spread out during cutting

Engineering Contradiction:

Improvecutting operation continuityVSAvoidcurtain positioning accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The spring-loaded clamping mechanism provides continuous feedback through elastic deformation, automatically adjusting the clamping force to maintain optimal pressure on the curtain. The spring constant is designed to provide sufficient clamping force to prevent curtain movement while avoiding excessive force that could cause deformation or bias during cutting.

Inventive Principle:

Principle #23Feedback

3Reliability

If excessive clamping force is applied to the curtain, then the curtain is securely held in place, but deformation of the curtain occurs

Engineering Contradiction:

Improvecurtain securing stabilityVSAvoidcurtain smoothness and appearance

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The spring mechanism acts as a cushioning element that absorbs excess force and distributes clamping pressure evenly across the curtain material. The spring's elastic properties prevent sudden or excessive clamping forces from reaching the curtain, thereby protecting the fabric from deformation while maintaining secure holding during cutting operations.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Adaptability or versatility

If custom made curtains are made to fit special window sizes, then the appearance of buildings is beautified, but the costs increase

Engineering Contradiction:

Improvewindow size customizationVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The curtain holder is designed as a modular device with adjustable components, including a movable support rod that can be positioned at different locations along the holder body. This segmentation allows the same basic device to accommodate various curtain widths and lengths, enabling standard curtains to be adapted to custom window sizes without requiring custom-made curtains.

Inventive Principle:

Principle #1Segmentation

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

Enhances the convenience and precision of curtain cutting, maintaining the smoothness and appearance of the curtain while reducing the time and labor required for the process.

Implementation Method 1

an elastic restoring member mounted in the sliding slot in the first sidewall of the curtain holder and stopped against a bottom edge of the operating knob to exert an elastic restoring force to the operating knob

Methodology Applied

Scientific EffectElastic restoring force: Elasticity

Data Source

PatentUS10166687B2Curtain cutting aid

Publication Date: 2019.01.01 CHEN CHIN FU

AI summary

A curtain cutting aid includes a curtain holder including an insertion space, an insertion slot in communication with the insertion space and a positioning portion disposed between the insertion space and the insertion slot, and a positioning unit including a movable bar inserted through the insertion slot into the insertion space and provided with spaced positioning grooves and an operating knob mounted in the curtain holder and coupled with the movable bar and movable between an initial position where one positioning groove of the movable bar is engaged with the positioning portion of the curtain holder to lock the movable bar in the insertion space, and a pressed position where the positioning groove of the movable bar is disengaged from the positioning portion of the curtain holder for allowing adjustment of the position of the movable bar according to the size of the curtain to be cut.