Trimmer Comb With Segmented Guard And Narrow Teeth
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Solution Overview
Problem
Existing trimmer combs face a trade-off between avoiding injuries by using wide tooth tips and maintaining cutting efficiency, as wide tips require larger tooth spacing, which reduces the number of cutting gaps.
Innovation Solution
A trimmer comb design featuring alternating guard teeth with wider tips and narrower teeth, where the narrower teeth have reduced geometry, allowing for closer spacing and increased cutting efficiency while minimizing the risk of hooking injuries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wide tooth tips are used to avoid hooking injuries, then safety is improved, but tooth spacing must be increased which reduces cutting efficiency
Solution Approach 1:
The trimmer comb teeth are segmented into two distinct types: guard teeth with wide tips for safety and narrow teeth for cutting efficiency. This segmentation allows each type to perform its specialized function optimally without compromising the other.
Solution Approach 2:
Different regions of the trimmer comb have different tooth geometries tailored to local requirements. The guard teeth have wide tips localized at their ends for skin protection, while the narrow teeth maintain smaller dimensions throughout for efficient cutting.
2Reliability
If narrow tooth gaps are used to prevent skin penetration, then safety is improved, but the number of cutting gaps is reduced which lowers cutting efficiency
Solution Approach 1:
The comb is segmented into alternating sequences of guard teeth and narrow teeth, creating a pattern where safety-critical regions (guard teeth areas) have wider spacing while cutting regions (narrow teeth areas) have narrower gaps for efficient hair cutting.
Solution Approach 2:
The tooth gap width is locally optimized: narrower gaps at narrow teeth locations for preventing skin penetration and efficient cutting, while wider spacing at guard teeth locations for skin protection and pleasant contact sensation.
Data Source
AI summary
The invention is concerned with a trimmer comb (1) that comprises a base sheet (10) that has a toothed front side, the toothed front side comprising a side-by-side arrangement of guard teeth (11) and narrow teeth (12), wherein the tips (15, 11d, 11d′) of the guard teeth (11) are wider in the longitudinal extension direction (y) of the trimmer comb than the tips (15′) of the narrow teeth (12) and the geometry of the narrow teeth (12) is reduced when compared to the geometry of the guard teeth (11). These two different trimmer comb teeth geometries serve to press down skin and to avoid injuries by hooking of trimmer comb teeth into skin pores or channels, while a high cutting efficiency is ensured because of the reduced geometry of the narrow teeth ultimately allowing a reduced average spacing distance between the trimmer teeth for a given width of the guard teeth tips. The invention is also concerned with a hair trimmer comprising such a trimmer comb and a hair removal device comprising such a hair trimmer.