| 摘要 |
A blade unit for a razor comb which can be used equally in two hair cutting directions is disclosed. The blade unit comprises a blade and a blade holder partially housing the blade. The blade holder has two edges, both of which are provided with a plurality of protrusions for combing hair. The protrusions partially cover the blade edge, leaving a plurality of uncovered blade edge portions for cutting hair. The covered blade edge portions and uncovered blade edge portions have an equal length and are provided alternately. The blade unit can be additionally provided with an appropriate blade sliding means for exchanging the covered and uncovered blade edge portions to refresh the cutting portions of the blade.
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