Transparent Nail Insertion Case for Curved Surface Measurement
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Solution Overview
Problem
Existing nail drawing devices face challenges in accurately measuring and correcting for the curved surface of nails, leading to distorted designs, and require costly laser equipment for effective measurement, which increases costs and measurement time.
Innovation Solution
A drawing device with a detachable finger insertion case that includes transparent areas for visual measurement of nail height and width, using scale marks and a pressing mechanism to ensure accurate alignment and measurement without the need for lasers, allowing for easy and cost-effective correction of nail designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laser-based light projecting methods are used to measure nail curved surface, then measurement precision is improved, but device cost and measurement time increase
Solution Approach 1:
The patent replaces expensive laser-based measurement systems with simple, inexpensive transparent scale marks that can be visually observed. The scale marks are basic graphical elements printed or attached to the insertion case, eliminating the need for costly laser projectors and complex measurement optics while achieving sufficient measurement precision for nail curvature correction.
Solution Approach 2:
The transparent scale marks on the insertion case allow direct visual measurement of the nail curved surface without requiring external laser equipment or complex processing systems. The measurement function is built into the insertion case itself, which naturally positions the nail during insertion, eliminating the need for separate expensive measurement devices.
2Measurement precision
If laser-based light projecting methods are used to measure nail curved surface, then measurement precision is improved, but measurement time increases
Solution Approach 1:
The patent uses simple transparent scale marks that enable immediate visual measurement without the time-consuming laser projection and processing steps. The scale marks are always present on the insertion case, allowing measurement to occur naturally during nail insertion without requiring separate measurement procedures.
Solution Approach 2:
The scale marks are pre-positioned on the insertion case in advance, so that measurement capability is already prepared and available whenever a nail is inserted. This eliminates the need for time-consuming setup of laser equipment and calibration procedures that would be required before each measurement.
3Ease of operation
If transparent areas are added to the insertion case, then ease of measurement is improved, but device complexity increases
Solution Approach 1:
The patent applies transparency only to specific local areas of the insertion case where measurement is needed, rather than making the entire case transparent. The transparent portions are precisely positioned at the measurement locations, allowing the rest of the insertion case to remain opaque and structurally simple.
Solution Approach 2:
The patent uses transparency (optical property change) in specific regions of the insertion case to enable visual measurement. This simple material property change in localized areas provides measurement functionality without requiring complex mechanical or electronic structures.
Data Source
AI summary
A drawing device includes an insertion case into which an object that is a finger or a toe having a nail to be drawn is inserted, and including a first surface provided with an opening area that exposes the nail in a state where the object is inserted and a second surface provided in a direction crossing the first surface, and an insertion area into which the insertion case is detachably inserted. An area of at least a part of the second surface, the area being corresponding to the nail in a state where the object is inserted, has transparency allowing an inside of the insertion case to be visible.