Razor Blade Elastic Support via Single-Component Cartridge
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Solution Overview
Problem
Existing razor designs with movable blade bodies face challenges in shaving performance due to complex structures and inadequate elastic support, leading to poor movement of the blade against the skin surface.
Innovation Solution
A simplified razor design featuring a single-component blade member with a base and top member, where the blade body is elastically supported to move against skin contact pressure, improving shaving performance by restricting contact pressure and simplifying the structure for movability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blade body is held between blade-body placing portions connected to elastic arms and a holding portion of the top plate inside a frame body, then the blade body is elastically supported to be movable, but the structure becomes complicated and manufacturing becomes troublesome
Solution Approach 1:
The patent combines the blade body, elastic arms, and blade-body placing portions into a single integrated cartridge assembly. The cartridge is inserted as one unit into the razor handle, eliminating the need for separate assembly of multiple components. This merging maintains the elastic support functionality while dramatically simplifying the overall structure and making replacement trivial for the user.
2Ease of operation
If the blade body is elastically supported so as to be movable against frictional force, then the blade body can move with the top plate, but the blade body does not move sufficiently when contacting the skin surface, resulting in poor shaving performance
Solution Approach 1:
The patent implements a dynamic blade support system where the cartridge is held by elastic arms that allow controlled movement. The elasticity provides a pressing force that enables the blade to dynamically adapt to skin contours while maintaining sufficient movement capability. This dynamic support ensures reliable shaving performance by balancing the pressing force with the blade's ability to move freely across the skin surface.
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 enhances shaving performance by ensuring the blade body moves effectively against skin contact, while simplifying the structural support mechanism, leading to improved shaving efficiency and reduced complexity.
Implementation Method 1
The base is elastically supported on a blade base member so as to be movable against a pressing force received from the skin surface when the blade body is caused to contact the skin surface
Data Source
AI summary
A razor is provided with a blade member 3 having a base and a blade body 4 on the base, a blade base member 5 arranged on the bottom side of the razor head 2, and a top member 6 arranged on the top side of the razor head 2. The blade member 3 is fitted between the blade base member 5 and the top member 6. The base is supported on the blade base member 5. A cutting edge 4a of the blade body 4 is exposed at the top member 6. The base is elastically supported by the leaf spring so as to move integrally against a pressing force from the skin surface when the blade body is caused to contact the skin surface. A contact pressure of the blade body 4 on the skin surface is restricted, thereby improving the shaving performance. Further, since a single-component blade member 3 having the blade body 4 on the base is fitted between the blade base member 5 and the top member 6, this simplifies the structure for elastically supporting the blade body 4 and allowing the blade body 4 to move.