Razor Handle Contact Geometry for Hygienic Surface Placement
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Solution Overview
Problem
Razor handles are not hygienically placed on surfaces due to the blade's cutting edge facing the floor, leading to potential contamination and damage, especially when a lubricating member is present.
Innovation Solution
A razor handle design with a rear portion comprising first and second portions spaced apart in the longitudinal direction, featuring first, second, and third contact points that allow stable and hygienic placement on a surface, ensuring the blade edge does not face the floor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the razor is placed with the cutting edge of the blade facing the floor, then the razor can be stably placed, but the blade is likely to be contaminated or damaged with foreign substances on the floor
Solution Approach 1:
The patent inverts the conventional placement orientation by designing the handle rear portion to contact the floor instead of the cartridge front portion. This inversion ensures the cutting edge faces upward away from the floor, preventing contamination while maintaining stability through the specially designed contact portions on the handle.
Solution Approach 2:
The patent extracts the contact function from the cartridge front portion and relocates it to the handle rear portion. By providing dedicated first, second, and third contact portions on the handle, the design separates the support function from the blade area, allowing stable placement without exposing the blade to the floor.
2Ease of operation
If the razor cartridge is placed with the cutting edge of the blade facing the floor, then the razor can be placed on the floor, but the lubricating member may be damaged because it is in direct contact with the floor
Solution Approach 1:
The patent extracts the placement contact function from the cartridge assembly and relocates it entirely to the handle. The first, second, and third contact portions are all located on the handle rear portion, ensuring neither the cutting edge nor the lubricating member contacts the floor during placement.
Solution Approach 2:
The handle rear portion acts as an intermediary element between the razor assembly and the floor. By providing dedicated contact portions on the handle, it mediates the contact interaction, allowing the razor to be placed on the floor while preventing direct contact between harmful floor surfaces and sensitive components like the lubricating member.
3Stability of the object's composition
If the cutting edge of the blade is adjacent to the floor while facing the floor, then the razor can be placed stably, but ventilation is not smooth in a cutting-edge area
Solution Approach 1:
The patent inverts the placement orientation so the cutting edge faces upward instead of downward toward the floor. This inversion naturally improves ventilation around the cutting edge by exposing it to air circulation, while the handle's contact portions maintain placement stability.
Data Source
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AI summary
A razor handle according to an embodiment of the present invention supports a razor cartridge including at least one razor blade and can be mounted on the bottom surface. The razor handle comprises: a front portion facing a direction in which a cutting edge of a razor blade is exposed; and a rear portion formed on the opposite side of the front portion and including a first part and a second part which are arranged apart from each other in the longitudinal direction of the razor handle and can be in contact with the bottom surface, wherein the first part includes a first contact part which can be in contact with the bottom surface, the second part includes a second contact part and a third contact part which are arranged apart from each other in the width direction and can be in contact with the bottom surface, and at least one portion of the first part has a curvature, and the first contact part is formed at the center of the at least one portion of the first part in the width direction.