Shaving Blade Assembly with Tool-Free Exposure Adjustment
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Solution Overview
Problem
Existing shaving blade assemblies often require tools for adjusting blade exposure and do not effectively follow the natural contours of the skin, leading to potential skin irritation and inconsistent shaving results.
Innovation Solution
A shaving blade assembly with a resilient element that urges blades orthogonally to their cutting edge and a movable member that can be manually adjusted to various positions relative to the shaving plane, allowing for customizable blade geometry without tools, and featuring multiple blades and resilient elements for improved skin adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If blade exposure is adjusted by moving the guard bar or rotating the head, then blade exposure can be changed, but the adjustment mechanism becomes complex and requires tools or multiple components
Solution Approach 1:
The adjustment mechanism is segmented into discrete notches on the resilient element that correspond to specific blade exposure positions. The movable member engages with these notches to provide predetermined adjustment steps, simplifying the overall mechanism while maintaining adjustability.
Solution Approach 2:
The resilient element is made flexible to allow dynamic adjustment of blade exposure. The element can bend and flex to accommodate different blade positions while maintaining contact with the movable member, enabling tool-free adjustment through simple pressing motion.
2Adaptability or versatility
If fixed blade geometry is used, then manufacturing is simple, but the shaving performance cannot be customized for different skin types
Solution Approach 1:
The blade assembly incorporates a movable member that allows the blade to be positioned at different exposure levels relative to the shaving plane. This dynamic positioning capability enables customization of shaving performance without requiring multiple fixed blade designs.
Solution Approach 2:
The blade exposure parameter can be changed by moving the movable member to different positions along the resilient element. This allows the same blade to provide different shaving characteristics (bold vs. sensitive) by simply changing its position, avoiding the need to manufacture multiple blade variants.
3Productivity
If blade exposure is increased for bolder shaving, then hair removal effectiveness improves, but skin irritation and nicks increase
Solution Approach 1:
The resilient element provides dynamic adjustment of blade exposure, allowing users to select between bold shaving (higher exposure for better hair removal) and sensitive shaving (lower exposure to reduce skin irritation). The movable member engages with notches at different positions to maintain optimal blade exposure for the selected mode.
Solution Approach 2:
The notches are pre-positioned on the resilient element to provide optimal blade exposure settings before use. Users can select the appropriate notch position based on their skin type and desired shaving intensity, with the preliminary positioning ensuring consistent and safe blade exposure.
4Stability of the object's composition
If the blade is held firmly in position, then cutting stability is maintained, but the blade cannot adapt to skin contours
Solution Approach 1:
The resilient element acts as a flexible component that allows the blade to adapt to skin contours while maintaining positional stability through the movable member. The flexible element can bend and flex to follow skin curves, yet the engagement with notches provides discrete stable positions for consistent cutting.
Solution Approach 2:
The blade assembly combines dynamic flexibility with stable positioning. The resilient element allows continuous movement and adaptation to skin contours, while the movable member engaged with notches provides discrete stable positions that ensure consistent blade exposure and cutting stability during shaving.
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
Enhances shaving performance by allowing users to choose between 'bold' and 'sensitive' shaving options, reduces nicks and cuts, and extends cartridge life by ensuring consistent blade exposure and adaptation to skin contours.
Implementation Method 1
a resilient element supporting the blade and arranged to urge the blade in a first direction orthogonal to a cutting edge of the blade
Data Source
AI summary
A shaving blade assembly and a method of using a shaving blade assembly may include a blade, a resilient element, and a first moveable member. The resilient element may support the blade and be arranged to urge the blade in a first direction orthogonal to a cutting edge of the blade. The first movable member may abut the blade in a second direction opposite to the first direction and be held in at least one position.