Outer Blade Agent Holding Parts Reduce Shaving Friction
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Solution Overview
Problem
Existing hair cutting devices experience friction issues between the skin surface and outer blades during shaving, leading to an uncomfortable and inefficient shaving experience.
Innovation Solution
The outer blade incorporates agent holding parts that allow substances like water or shaving cream to seep between the skin surface and the blade, reducing friction and enabling smoother sliding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the outer blade is pressed against the skin surface for effective hair cutting, then the hair cutting performance is improved, but friction between the blade and skin increases causing rough shaving
Solution Approach 1:
The patent introduces an agent (water or shaving cream) as an intermediary substance between the outer blade and skin surface. This agent forms a lubricating layer that reduces direct contact and friction between the blade and skin, enabling smooth shaving while maintaining effective hair cutting performance
Solution Approach 2:
The patent modifies the surface properties of the outer blade by adding agent holding parts that change the interaction parameters between blade and skin. These parts create micro-reservoirs that control the release and distribution of lubricating agent, optimizing the friction reduction effect during shaving
2Object-affected harmful factors
If the outer blade surface is made smooth for comfortable skin contact, then skin burden is reduced, but hair raising capability deteriorates
Solution Approach 1:
The patent applies different surface properties to different regions of the outer blade. The agent holding parts have a smooth surface for comfortable skin contact, while the blade edges maintain sharpness and structural features for effective hair raising and cutting, thus locally optimizing both skin comfort and hair cutting performance
3Object-affected harmful factors
If agent holding parts are added to reduce friction, then shaving smoothness is improved, but device complexity increases
Solution Approach 1:
The outer blade is segmented into multiple functional regions: cutting edges for hair cutting, agent holding parts for lubrication, and connecting portions for structural integrity. This segmentation allows each region to perform its specific function optimally while maintaining overall blade effectiveness
Solution Approach 2:
The patent combines multiple functions into a single integrated outer blade structure. The agent holding parts are formed as integral portions of the blade rather than separate components, merging the lubrication function with the cutting function in one unified structure, thereby reducing overall device complexity
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
This design enhances the smoothness of shaving by reducing friction, allowing for more effective hair cutting and minimizing skin burden, while maintaining structural strength and effective hair raising capabilities.
Implementation Method 1
the agent holding part capable of holding an agent which is a substance having a predetermined effect on a skin surface
Data Source
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AI summary
An outer blade (100) for a hair cutting device, the outer blade (100) being mounted to an end of a main body of the hair cutting device, includes bars (101) that each have a shape of a rectangular stick and are arranged at predetermined intervals. The outer blade (100) also includes, at a skin-surface-contact-side first face (111) of each of the bars (101), an agent holding part (102) configured to hold an agent that is a substance having a predetermined effect on a skin surface, the agent holding part (102) being a surrounded recess heading from the skin-surface-contact-side first face (111) of the bar (101) toward an inner-blade-side second face (112) of the bar (101). Thus, the agent such as foam or gel can be held by the agent holding part (102) at the skin-surface-side face of the outer blade (100), and friction can be reduced between the outer blade (100) and the skin surface by the agent held by the agent holding part (102).