Razor Cartridge Edge Protrusions for Skin Comfort
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Solution Overview
Problem
Conventional razor cartridges made of plastic transfer hardness to the user's skin during shaving, leading to a degraded shaving sensation, and rubber guard portions can stretch the skin intensely but do not provide a soft touch across the entire area, while shaving aids are often washed away or used excessively.
Innovation Solution
A razor cartridge design featuring a blade housing with edge portions and a guard portion containing multiple protrusions that provide a soft, resilient touch and efficiently distribute shaving aids across the skin, including a lubricating band for extended use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the blade housing is made of plastic material, then the structural strength and durability are improved, but the shaving sensation deteriorates due to hardness transfer to the skin
Solution Approach 1:
The blade housing combines plastic material with rubber material to create a composite structure. The plastic provides structural strength while the rubber layer provides softness and comfort during shaving, resolving the contradiction between durability and shaving sensation.
Solution Approach 2:
The rubber material is applied specifically to the portions of the blade housing that contact the skin during shaving, while other areas may remain as plastic. This localized application optimizes the shaving sensation without compromising overall structural integrity.
2Object-affected harmful factors
If guard rubber is added to the blade housing, then the shaving sensation is improved with softer touch, but the device complexity increases due to additional components
Solution Approach 1:
The rubber guard portions are integrated directly into the blade housing structure, combining the protective function and the comfort function into a single unified component rather than separate attachments, thereby reducing overall device complexity.
Solution Approach 2:
The blade housing is manufactured as a composite structure combining plastic and rubber materials, where the rubber portions are formed as integral parts of the housing itself, eliminating the need for separate guard components and reducing assembly complexity.
3Object-affected harmful factors
If shaving aids are applied to the skin, then the lubrication and comfort are improved, but the shaving aid is washed away by moisture leading to excessive usage
Solution Approach 1:
The rubber portions of the blade housing act as an intermediary between the shaving aid and the skin, helping to retain the shaving aid on the skin surface during shaving and preventing it from being washed away by moisture, thereby reducing excessive usage.
Solution Approach 2:
The rubber guard portions are designed to distribute and retain shaving aid before it is applied to the skin, creating a protective layer that prevents premature washing away and ensures sustained lubrication throughout the shaving process.
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 razor cartridge offers a soft and comfortable shaving experience by distributing shaving aids effectively and maintaining skin contact, reducing irritation and the need for excessive shaving aids.
Implementation Method 1
Since such a guard rubber is made of a rubber material having elasticity, it can stretch the user's skin more intensely
Implementation Method 2
These shaving aids contain a lubricating component and may be applied to and used on the user's skin
Data Source
AI summary
The present disclosure provides a razor cartridge. According to at least one embodiment of the present disclosure, a razor cartridge includes at least one shaving blade having a cutting edge, a blade housing configured to receive the at least one shaving blade in a longitudinal direction, and an edge portion disposed on each of both lateral sides of the blade housing and including a plurality of edge protrusions formed on a corresponding surface of each edge portion.