| 摘要 |
PURPOSE: To improve service life by suppressing wearing on the sliding surface of low-hardness materials by composing a movable blade and a fixed blade of different materials and reducing the degree of coarseness on the material of hardness higher than the material of low hardness. CONSTITUTION: The rotation of a motor 6 is converted into reciprocative motion by an eccentric shaft 10 and a guide board 13 engaged with this shaft, a movable blade 5 is reciprocatively moved on a fixed blade 4 and between the fixed blade 4 and movable blade 5 made into comb line together, hair led into the groove of these blades is cut. The fixed blade 4 is composed of metal, and the movable blade 5 is composed of ceramics for improving initial sharpness and guaranteeing the service life of sharpness in long-time use. The surface accuracy of the movable blade 5 is lowered rather than the surface coarseness of the opposed fixed blade 4 and made into surface state smaller than 1μm, for example. Thus, the wearing of the fixed blade 4 can be reduced, and load at the time of working can be suppressed to a minimum.
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