Blade of electric shaver, method for shaving by using the same, and electric shaver having the same

A method of shaving hair by using a blade of an electric shaver which comprises an interior blade and a sheet-shaped exterior blade, the interior blade detachably attached to a drive element of the electric shaver via an interior blade pushing-up means and having a horizontal surface, a vertical surface, and a relief surface formed between the horizontal surface and the vertical surface, the exterior blade having a plurality of blade apertures, a bottom surface of the exterior blade elastically contacted with the horizontal surface of the interior blade by a pushing force of the interior blade pushing-up means, the method comprising:

• driving the drive element such that the horizontal surface of the interior blade is moved laterally to rub the bottom surface of the exterior blade;
• and
• contacting an outer surface of the exterior blade with human skin having a beard such that the beard is introduced into a blade aperture of the exterior blade;
• wherein the beard thus introduced into the blade aperture is held between the interior blade and the exterior blade in accordance with a lateral movement of the interior blade and cut by an edge of the exterior blade,
• wherein only the cutting blades formed at both side ends of the interior blade contact the bottom surface of the exterior blade and a gap exists between a bottom surface of the exterior blade and a top end of the remaining cutting blade members.

An electric shaver, comprising:

• a main body having a motor therein;
• a frame member disposed on a top of the main body;
• a drive element projecting upward from an upper surface of the frame member and driven by the motor;
• an interior blade detachably attached to the drive element via an interior blade pushing-up means, the interior blade having a horizontal surface, a vertical surface, and a relief surface provided between the horizontal surface and the vertical surface, and elastically pushed upward by the interior blade pushing-up means;
• a head attached to the frame member to cover the interior blade, the head comprising a sheet-shaped exterior blade having a plurality of blade apertures attached to the head, the bottom surface of the exterior blade elastically contacting with the horizontal surface of the interior blade;
• wherein, upon driving the drive element, the interior element moves laterally such that the horizontal surface of the interior blade rubs against the bottom surface of the exterior blade, and a human beard introduced into the blade aperture of the exterior blade is held between the horizontal surface of the interior blade and the exterior blade in accordance with a lateral movement of the interior blade and cut by an edge of the exterior blade,
• wherein only the cutting blade members formed at both side ends of the interior blade contact the bottom surface of the sheet-shaped exterior blade and a gap exists between the bottom surface of the exterior blade and the top end of the remaining cutting blade members.