Rotary electric shaver
AssigneeIzumi Products Company
InventorTetsuhiko Shimizu
Life of this patent
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Abstract
A rotary electric shaver includes a gear case arranged inside a head unit, a lower gear arranged in a lower portion of the gear case, coaxially having an outer blade gear for driving an outer blade and an inner blade gear for driving an inner blade, an upper gear arranged in an upper portion of the gear case to drive the outer blade, and a transmission gear having an input gear arranged in the lower portion of the gear case and to which driving power is input from the lower gear, and an output gear arranged in the upper portion of the gear case to drive the upper gear, in which the input gear and the output gear are coaxial and a rotary shaft vertically penetrates the gear case. The driving power from the upper gear drives an outer blade drive gear for driving the outer blade.
Claims19
A rotary electric shaver in which multiple blade units having an outer blade whose upper surface serves as an annular shaving surface and an inner blade coming into sliding contact with a lower surface of the outer blade are arranged in a head unit held in a main body, and in which the outer blade and the inner blade are respectively and rotatably driven, the rotary electric shaver comprising:
- a gear case that is arranged inside the head unit;
- a lower gear, the lower gear having a multi-stage structure and arranged in a lower portion of the gear case, and that coaxially has an outer blade gear to which driving power is input from a drive source accommodated in the main body and which outputs the driving power to the outer blade, and an inner blade gear which outputs the driving power to the inner blade;
- an upper gear that is arranged in an upper portion of the gear case, and that outputs the driving power to the outer blade;
- and
- a transmission gear that has an input gear which is arranged in the lower portion of the gear case and to which the driving power is input from the lower gear, and an output gear which is arranged in the upper portion of the gear case and which outputs the driving power to the upper gear, in which the input gear and the output gear are coaxially and rotatably connected to each other, and in which a rotary shaft thereof is arranged so as to vertically penetrate the gear case,
- wherein the driving power from the upper gear drives an outer blade drive gear which drives the outer blade.
Dependencies are inferred from the claim text.