Shaving Razor Light Source for Blade Edge Alignment
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Solution Overview
Problem
Shaving razors with multiple blades, particularly those designed for trimming, face challenges in accurately positioning the trimming blade due to its hidden location, leading to less than satisfactory shaving experiences.
Innovation Solution
Incorporating a light source that projects a defined image onto the skin to indicate the location of the blade edge, allowing users to align the blade accurately during shaving, which can be a line segment or multiple line segments, and can be projected continuously or intermittently using high illumination elements like LEDs, lasers, or halogen bulbs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a trimming blade is mounted on the rear of the razor cartridge to improve trimming ability, then the ability to trim sideburns and hair near the nose is improved, but the blade becomes hidden from view making it difficult to accurately position on the skin
Solution Approach 1:
A light source is introduced as an intermediary element that projects a visual indicator (defined image) onto the skin to show the blade edge location. This mediator bridges the gap between the hidden blade and the user's need to see where the blade will contact the skin, enabling accurate positioning without exposing the blade itself.
Solution Approach 2:
Instead of showing the actual blade (which is hidden), the system creates and projects a visual copy or representation (defined image) of the blade's location on the skin. This optical copy allows the user to see where the blade edge will contact the skin without the blade being visible, solving the visibility problem while maintaining the trimming capability.
2Productivity
If multiple blades are mounted on the razor to increase shaving efficiency and distribute compressive forces, then shaving efficiency is improved, but the complexity of the device increases
Solution Approach 1:
The light source system serves multiple functions: it indicates the location of multiple different blades (primary shaving blades and trimming blade), provides visual guidance for proper razor placement, and works with various blade configurations. This multi-functional approach allows a single system to support increased blade complexity without proportionally increasing overall device complexity.
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
Enables precise alignment and improved shaving accuracy by visually indicating the blade edge location on the skin, enhancing the overall shaving experience.
Implementation Method 1
The light source may be selected from the group consisting of a light emitting diode, a laser, a halogen bulb, or a luminescent bulb.
Implementation Method 2
The light source may be selected from the group consisting of a light emitting diode, a laser, a halogen bulb, or a luminescent bulb.
Data Source
AI summary
A shaving razor has a housing joined to a handle, one or more blades mounted in the housing and a light source. The light source projects a defined image indicating the exact location of a blade edge on the skin of a user enabling the user to properly align the blade edge on the skin during shaving.