Razor Cartridge With Movable Blade Housing and Raised Front Supporter
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Solution Overview
Problem
Existing razor cartridges with linear motion blades cause significant skin irritation during shaving due to strong forward movement.
Innovation Solution
A razor cartridge design featuring a guard frame with a movable blade housing and distinct front and rear supporters, where the second front supporter is higher than the first, reducing skin contact and irritation by adjusting the blade's protrusion and angle relative to the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the blade is structured to alternate between forward movement in the shaving direction and backward movement in an opposite direction, then the shaving efficiency is improved, but the forward movement causes strong irritation to the user's skin
Solution Approach 1:
The blade housing is designed to be movable relative to the guard frame, allowing the blade's position and angle to dynamically adjust during the shaving stroke. This dynamic configuration enables the blade to optimize cutting efficiency while reducing skin irritation through controlled motion variations
Solution Approach 2:
The patent modifies the operational parameters of the blade by changing its protrusion distance and angle relative to the skin surface. The blade housing movement alters these parameters during shaving, allowing optimization of both cutting performance and skin comfort by varying the blade's engagement with the skin
2Productivity
If the blade housing is made movable forwards and backwards in the guard frame, then the shaving efficiency is improved, but the structure becomes more complex
Solution Approach 1:
The razor cartridge is divided into distinct functional components: a stationary guard frame and a movable blade housing. This segmentation allows the blade housing to independently move forward and backward within the guard frame, enabling improved shaving efficiency through controlled blade motion while keeping the overall structure modular and manageable
Data Source
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AI summary
A razor cartridge according to an embodiment of the disclosure includes at least one blade having a cutting edge; a blade housing accommodating the at least one blade in a longitudinal direction; and a guard frame accommodating the blade housing to be movable forwards and backwards, in which the guard frame includes a first front supporter provided in front of the blade housing and coming into contact with skin during a shaving process, the blade housing includes a second front supporter provided between the blade and the first front supporter and coming into contact with skin during the shaving process, and a topmost portion of the second front supporter is higher than a topmost portion of the first front supporter.