Maxell Izumi Co., Ltd.

Izumi Products Company

Spectrum Brands, Inc.

Koichi Odagiri

Yoshiyuki Mimura

Kotaro Iwakura

Yuta Sugiura

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.

Rotary electric shaver

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.

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. The small blade is formed by erecting a portion of a metal plate so that an angle of a front side in a rotation direction with respect to a plate surface of the metal plate becomes an acute angle, the front side in the rotation direction has a concave portion having a shape hollowed toward a lower end portion from an upper end surface which comes into sliding contact with the outer blade, and an upper end edge defined by the upper end surface and the concave portion functions as a blade edge.

Growing community of inventors

Matsumoto, Japan

Koichi Odagiri