Manicure Practice Hand Model with Interchangeable Fingernail Fixing Mechanism
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Solution Overview
Problem
Existing manicure practice hand models have issues with loose connections between fingernail pieces, making it difficult for novice manicurists to achieve a stable and effective training experience due to the complexity of mounting and disassembling the fingernail pieces.
Innovation Solution
A manicure practice hand model featuring a simulated palm and fingers with fingernail beds that utilize an 'I'-shaped fingernail fixing member and an inverted T-shaped groove structure for secure mounting, allowing for flexible disassembly and multiple replacements without compromising stability, using a mortise and tenon connection for interference fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fingernail pieces are inserted on the hand model multiple times, then training flexibility is improved, but the connection becomes loose and reliability deteriorates
Solution Approach 1:
The fingernail piece is segmented into distinct components: the nail body with groove and the separate fixing member with protrusion. This segmentation allows the fixing member to be repeatedly inserted and removed from the groove without compromising the integrity of the nail piece itself, enabling multiple training attempts while maintaining connection reliability.
Solution Approach 2:
The fixing member acts as an intermediary element between the fingernail piece and the hand model. The protrusion on the fixing member engages with the groove on the fingernail piece, creating a reliable mechanical connection that can be repeatedly assembled and disassembled without loosening, thus serving as a mediator that maintains both flexibility and stability.
2Ease of operation
If traditional mounting methods are used, then ease of operation is improved, but mounting stability deteriorates
Solution Approach 1:
Instead of having the nail piece with a protrusion and the hand model with a groove, the design inverts the structure by placing the groove on the nail piece and the protrusion on the separate fixing member. This inversion allows for easier alignment and insertion while maintaining stable mounting, as the groove-protrusion interface provides precise positioning and secure engagement.
3Productivity
If fingernail pieces are frequently extracted and replaced, then training effectiveness is improved, but device complexity increases
Solution Approach 1:
The fixing member is extracted as a separate, independent component from the nail piece itself. This extraction allows the fixing member to be easily removed and reinserted multiple times during training without affecting the nail piece structure, thereby improving training efficiency while keeping the added structural complexity minimal and localized to just the fixing mechanism.
Data Source
AI summary
The present invention provides a manicure practice hand model. Simulated fingernails are provided on fingernail beds at free ends of fingertips on a back side of simulated fingers; fingernail mounting grooves are provided on the fingernail beds at the free ends of the fingertips on the back side of the simulated fingers; a fingernail fixing member is provided on an inner surface of each of the simulated fingernails, and the fingernail fixing member has a shape and size matching with those of the fingernail mounting groove. The present invention achieves the flexible disassembly of the simulated fingernails and the simulated fingers, has advantages of convenient mounting and stable fixation, and is suitable for multiple times of extraction and replacement.