Abstract: A rotary electric shaver includes a head connected to a blade setting base of a main body. The blade setting base has a setting part in which a plurality of blade units are disposed, and a blade frame that holds the setting part. An inner blade part of the blade unit has an inner blade member, and a base part joined to the inner blade member. An outer blade part of the blade unit has an annular outer blade member having a sliding contact surface and a plurality of slits formed in the circumferential direction, a disk-shaped cover, a ball, and a support. A part of the ball surrounded by the cover and the support protrudes from the cover.

Abstract: There is provided a rotary electric shaver which includes an external outer blade having a plurality of hair inlet holes on an annular shaving surface, an internal outer blade, a rotationally driven external inner blade having a plurality of small blades coming into sliding contact with a rear surface of the external outer blade, a rotationally driven internal inner blade, an external inner blade rest base, and an internal inner blade rest base. The external outer blade has a cylindrical guide ring formed on an inner peripheral side of an inner wall portion, and the external inner blade has a plurality of guides which come into sliding contact with an inner peripheral surface of the guide ring to perform radial alignment with respect to the external outer blade.

Abstract: There is provided a rotary electric shaver which includes an external outer blade having a plurality of hair inlet holes on an annular shaving surface, an internal outer blade, a rotationally driven external inner blade having a plurality of small blades coming into sliding contact with a rear surface of the external outer blade, a rotationally driven internal inner blade, an external inner blade rest base, and an internal inner blade rest base. The external outer blade has a cylindrical guide ring formed on an inner peripheral side of an inner wall portion, and the external inner blade has a plurality of guides which come into sliding contact with an inner peripheral surface of the guide ring to perform radial alignment with respect to the external outer blade.

Abstract: An inner blade of a rotary electric shaver decreases a rake angle and increases an erecting angle in a small blade, which can prevent remaining hair from appearing on one end side in a cross section of hair, and which can prevent poor shaving performance and increased sliding resistance against an outer blade. An inner blade of a rotary electric shaver includes an outer blade whose upper surface functions as an annular shaving surface having multiple hair inlets, and the inner blade having a plurality of small blades which rotate while coming into sliding contact with a lower surface of the outer blade.

Abstract: An inner blade of a rotary electric shaver decreases a rake angle and increases an erecting angle in a small blade, which can prevent remaining hair from appearing on one end side in a cross section of hair, and which can prevent poor shaving performance and increased sliding resistance against an outer blade. An inner blade of a rotary electric shaver includes an outer blade whose upper surface functions as an annular shaving surface having multiple hair inlets, and the inner blade having a plurality of small blades which rotate while coming into sliding contact with a lower surface of the outer blade.

Abstract: A method of manufacturing an outer cutter of a rotary electric shaver that includes the outer cutter and an inner cutter which is slidingly in contact with a bottom surface of the outer cutter and rotates, in which a plurality of the circular shaving surfaces are integrally formed in the outer cutter in a concentric manner, and round hole-shaped hair introduction openings are formed in at least one of the circular shaving surfaces includes (a) a step of grinding or polishing a predetermined position where the round hole-shaped hair introduction openings are formed in the circular shaving surface to obtain a thickness size smaller than an inner diameter size of the round hole; and (b) a step of forming the round hole-shaped hair introduction openings in the position where the grinding or the polishing is performed by pressing, after the step (a).