Razor Blade Peg Support for Vibration Control
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Solution Overview
Problem
Multi-blade razor cartridges often cause skin irritations due to blade vibrations and movements during shaving, leading to nicks and cuts.
Innovation Solution
Incorporating cylindrical pegs within the razor cartridge to support and stabilize the blades, restricting fore and aft movement and reducing blade vibration by forming a single line of contact with each blade, thereby controlling blade deflection and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-blade razor cartridges are used to provide a close comfortable shave, then shaving performance is improved, but blade vibrations and movements occur causing skin irritations
Solution Approach 1:
Cylindrical pegs are introduced as intermediary elements between the blades and the cartridge housing. These pegs contact the bottom portions of the blades and provide stabilization, reducing unwanted blade movements and vibrations during shaving while maintaining cutting performance
Solution Approach 2:
The blade support system changes the physical parameters of blade movement by introducing cylindrical pegs that constrain blade motion. This modifies the vibration characteristics and positional stability of the blades, reducing the amplitude of unwanted movements that cause skin irritation
2Stability of the object's composition
If blades are supported to reduce vibration, then blade stability is improved, but device complexity increases
Solution Approach 1:
The blade support function is segmented into discrete cylindrical pegs rather than using a continuous complex support structure. Each peg independently stabilizes blade portions, achieving overall blade stability through simple, modular elements that can be easily manufactured and assembled
Data Source
AI summary
The invention provides a razor cartridge with multiple blades and peg(s) or pegged support members that aid in the control of the blades by restricting fore and aft blade movement, which in turn, reduces the amplitude of blade deflection and/or vibration during shaving. This reduction provided by the pegs improves shaving performance. Blades rest between pegs which are rounded or shaped such that the blade bottom portion contacts the peg at one point, forming a single line of contact. The pegs may be in a slalom-like, linear (with one or more peg columns), or offset arrangement. Pegs or pegged support members may be at any location of the razor blade assembly; for instance, at the center and/or at blade slot ends. Pegs may each be of different shapes and may or may not be equidistant or at the same heights as each other, depending on blade spans and exposures.