Adjustable Guard Tab for Safe Nail Filing
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Solution Overview
Problem
Existing nail trimming devices do not safely allow filing or smoothing of nails with substantial curvature without risking damage to adjacent skin, particularly for users with varied nail shapes and sizes, such as elders with concave or convex toenails.
Innovation Solution
A motorized nail trimming device equipped with a specially designed safety guard cap featuring an adjustable guard tab and a rotatable filing member made from alloys like bronze, brass, or stainless steel, allowing for safe operation on various nail shapes and sizes, and facilitating easy sanitization and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a fixed protective skin guard is used, then skin protection is improved, but adaptability to various nail shapes and sizes deteriorates
Solution Approach 1:
The guard tab is made adjustable and movable relative to the cap body, allowing users to reposition it according to different nail shapes, sizes, and curvatures. This dynamic adjustment capability enables the same device to adapt to various nail conditions while maintaining skin protection through the guard tab's shielding function.
Solution Approach 2:
The protective structure is divided into a cap body and a separate, adjustable guard tab component. This segmentation allows the guard tab to be independently positioned and adjusted, providing both skin protection and adaptability to different nail geometries without compromising either function.
2Device complexity
If a simple protective guard is used, then device complexity is reduced, but functionality for various nail conditions deteriorates
Solution Approach 1:
The guard tab's adjustable mechanism adds minimal complexity while maximizing versatility. The simple yet effective adjustment system allows one component to perform multiple functions: protecting skin from rotation, guiding the filing action, and adapting to different nail geometries.
Solution Approach 2:
The adjustable guard tab serves multiple purposes: it protects skin from the rotating cap, guides the filing motion for different nail shapes, and can be repositioned to accommodate various nail sizes and curvatures. This multi-functionality is achieved through a relatively simple adjustable structure.
Data Source
AI summary
An electric nail filing device includes a cylindrical body having a battery holder attached inside in the body, a cover attached to an open end of the cylindrical body, an on/off switch attached on the cover or the cylindrical body, an electric motor having a metallic rotary filing wheel, and a safety guard cap attached and covering the wheel, shaped like a rectangular prism, a pentagonal prism, a hexagonal prism, or a multiplane prism having multiple planes and a tubular cylindrical housing inner space which has enough space to cover the wheel, in which the safety guard cap has multiple slots on the planes, and an adjustable guard tab attached at closed end of the safety guard cap. Optionally the safety guard cap is covered by a nail debris collector which is shaped like a half-dome covering all other planes of the safety guard cap except one plane.