Razor Blade Element With Comb Teeth for Curly Hair Shaving
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Solution Overview
Problem
Existing safety razors with multiple blades face challenges in efficiently shaving unruly or curly hairs, requiring multiple passes and increasing the risk of skin irritation or injury, and existing safety grids can lead to imprecise shaving.
Innovation Solution
A blade element with a comb-like structure is integrated into the razor cartridge, featuring a blade support and a comb-like element with parallel teeth that orient and guide hairs towards the cutting edge, allowing for efficient shaving in fewer passes and providing additional skin support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a safety grid is used to cover the shaving surface, then skin protection is improved, but shaving precision deteriorates
Solution Approach 1:
The safety grid is segmented into individual comb-like elements, each with multiple teeth. These segmented elements are distributed across the shaving surface, allowing each element to protect skin locally while maintaining cutting precision in the gaps between elements. This segmentation resolves the contradiction by providing protection only where needed without interfering with the blade's cutting path.
Solution Approach 2:
The comb-like elements provide localized skin protection at specific contact points while leaving other areas open for precise shaving. Each comb element's teeth are positioned to protect skin directly beneath them while maintaining clearance from the cutting edge, enabling different zones of the shaving surface to have different functions - protection versus precision cutting.
2Productivity
If multiple cutting passes are made on unruly hairs, then complete shaving is achieved, but skin irritation and injury risk increase
Solution Approach 1:
The comb-like elements perform preliminary action by orienting and aligning unruly hairs before they reach the cutting edge. The teeth of the combs catch and straighten curly or directional hairs, presenting them in a favorable orientation for cutting. This preliminary hair orientation enables complete shaving in fewer passes, reducing skin irritation from repeated contact.
3Ease of operation
If the comb-like element extends beyond the cutting edge, then hair orientation is improved, but device complexity increases
Solution Approach 1:
The comb-like element is merged with the blade support structure, forming an integrated assembly. The comb teeth are positioned on the blade support and extend beyond the cutting edge, combining the support function with the hair-orienting function in a single structural unit. This merging reduces overall device complexity compared to having separate comb and blade components.
Data Source
AI summary
A blade element for a razor cartridge includes a blade support, a blade and a comb-like element. The blade support includes a base portion and a bent upper portion. The blade is arranged at the upper portion of the blade support and includes a cutting edge. The comb-like element includes a shaft and a plurality of teeth. The comb-like element is arranged parallel to the blade. The plurality of teeth extend parallel to each other form the shaft to beyond the cutting edge of the blade. Further, the comb-like element is disposed above the blade.