Razor Head Resilient Legs and Inclined Blade Design
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Solution Overview
Problem
Conventional manual razors with rigid razor blades cause discomfort and increased costs due to skin scratching and uneven shaving, as the blades are prone to indentations and require frequent replacement.
Innovation Solution
A scratch-resistant razor head with resilient legs and an inclined razor blade design, featuring a head frame with guide slots and resilient legs that allow elastic deformation, reducing skin resistance and preventing scratches during shaving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the razor blade is made rigid to maintain structural stability, then the blade can maintain its shape, but it is prone to indentations when impacted by beards, causing skin scratching and requiring frequent replacement
Solution Approach 1:
The patent changes the physical state of the blade from rigid to flexible by using a thin sheet metal material that can elastically deform. This parameter change allows the blade to bend and absorb impacts from beards without creating permanent indentations, thereby resolving the contradiction between maintaining shape stability and preventing skin scratching.
2Productivity
If the razor blade is inclined relative to the pulling direction to improve cutting effectiveness, then the shaving effect is improved, but the skin area pressed at two ends becomes uneven, causing the blade to easily cut into the skin and scratch the user
Solution Approach 1:
The patent applies dynamics by making the blade flexible rather than rigid. The flexible blade can dynamically adapt its shape during shaving, bending to conform to the skin surface and evenly distribute pressure across the skin area. This dynamic adaptation prevents the uneven pressure that causes skin cutting and scratching, while still maintaining the inclined cutting angle for effective shaving.
3Object-affected harmful factors
If the razor blade is made flexible to prevent skin scratching, then skin irritation is reduced, but the blade may deform and affect shaving consistency
Solution Approach 1:
The patent uses beforehand cushioning by designing the blade with elastic properties that allow it to bend and absorb impacts before these forces can cause harmful indentations or deformations. The blade's elasticity acts as a cushion that protects against sudden impacts from beards, preventing skin scratching while the elastic recovery maintains shaving consistency throughout the blade's service life.
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 inclined blade design enhances shaving effectiveness by cutting notches in beards and reducing skin contact, while the resilient legs minimize skin irritation and extend the razor's service life by preventing scratches and improving shaving consistency.
Implementation Method 1
two resilient legs located beneath the inclined platform are respectively extended from the left frame wall and the right frame wall along the direction of the first axis and toward each other, each resilient leg comprises an resilient inclined leg inclined upwardly and toward the inclined platform and a receiving leg extended from the inclined leg along the direction of the first axis
Data Source
AI summary
A scratch-resistant razor head includes a head frame and a razor blade including a support bar having an inclined platform and a blade portion mounted on the inclined platform. An angle between a cutting edge of the blade portion and a front end face of the inclined platform is greater than 0 degree and less than or equal to 0.5 degree; two resilient legs are respectively extended from the left and right frame walls and toward each other, each resilient leg includes an resilient inclined leg and a receiving leg extended from the inclined leg along the direction of the first axis, a convex point is formed by projecting from a top surface of the receiving leg, and the convex point is contacted with the inclined platform. A razor with such a razor head is also provided.