Razor Cartridge Lubricating Member Structure for Shaving Plane Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The expansion of the lubricating member in razor cartridges due to moisture absorption causes deformation, leading to a change in the shaving plane and deteriorating shaving performance.
Innovation Solution
A razor cartridge design with a lubricating member that includes a skin contact portion and a body portion, accommodated in a blade housing with grooves and posts to expose these portions, facilitating rapid moisture discharge and minimizing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the lubricating member is made larger to provide sufficient lubrication, then the lubrication effect is improved, but the member absorbs more moisture and deforms more, deteriorating shaving performance
Solution Approach 1:
The lubricating member is designed as a thin film structure that provides sufficient lubricating material coverage without excessive bulk. This thin film design reduces moisture absorption while maintaining effective lubrication, preventing deformation that would occur with larger, bulkier lubricating members.
Solution Approach 2:
The patent changes the physical parameters of the lubricating member by controlling its thickness and porosity. By optimizing these parameters, the member provides adequate lubrication material quantity while minimizing moisture absorption and subsequent deformation.
2Quantity of substance
If the lubricating member absorbs moisture during shaving and cleaning, then the lubricating material is activated and applied to skin, but the member expands and deforms, changing the shaving plane and deteriorating shaving performance
Solution Approach 1:
The thin film structure of the lubricating member allows it to flex and adapt during moisture absorption without undergoing significant dimensional changes. This maintains the shaving plane stability while still enabling lubricating material application to the skin.
Solution Approach 2:
By controlling the porosity and thickness parameters of the lubricating member, the patent enables the material to absorb and release moisture without causing excessive expansion or deformation, thus maintaining shape stability during the lubrication application process.
3Ease of manufacture
If the lubricating member is covered completely by the blade housing, then the structure is simplified and protected, but moisture discharge is hindered and drying is slowed
Solution Approach 1:
The blade housing is segmented to include openings that expose portions of the lubricating member. This segmentation allows moisture to discharge from the lubricating member while maintaining overall structural simplicity and protection of the component.
Solution Approach 2:
Portions of the lubricating member are extracted from complete enclosure by the blade housing through the inclusion of openings. This extraction enables moisture discharge and faster drying while the housing still provides sufficient structural support and protection.
4Quantity of substance
If the lubricating member deforms due to moisture absorption, then the member expands, but the relative position between the blade and shaving plane changes, deteriorating shaving performance
Solution Approach 1:
The thin film design of the lubricating member minimizes the volume change that occurs during moisture absorption. This reduces deformation and maintains the precise relative position between the blade and shaving plane, preserving shaving performance.
Solution Approach 2:
By optimizing the thickness and material composition parameters of the lubricating member, the patent minimizes expansion during moisture absorption, thereby maintaining manufacturing precision of the shaving plane position.
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
The design ensures consistent shaving performance by preventing deformation of the lubricating member, allowing it to dry quickly and maintain a stable shaving plane.
Implementation Method 1
The lubricating member expands by absorbing moisture during a shaving process or a cleaning process
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A razor cartridge according to an embodiment of the present invention includes: at least one blade having a cutting edge; a blade housing which accommodates the blade in the longitudinal direction and includes a top surface on which the blade is disposed and a bottom surface facing the top surface; and a lubricating member accommodated in the blade housing so as to be disposed behind the blade with respect to the shaving direction. The lubricating member includes: a skin contact part exposed from the top surface of the blade housing; and a body part extending from the skin contact part toward the bottom surface of the blade housing. The blade housing includes a groove formed on the rear surface of the blade housing to expose at least a portion of the body part and the skin contact part.