US 12,168,303 B2
Rotary electric shaver
Kotaro Iwakura, Matsumoto (JP); Koichi Odagiri, Matsumoto (JP); and Yuta Sugiura, Matsumoto (JP)
Assigned to MAXELL IZUMI CO., LTD., Matsumoto (JP)
Filed by MAXELL IZUMI CO., LTD., Matsumoto (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/897,559.
Claims priority of application No. 2021-176037 (JP), filed on Oct. 28, 2021.
Prior Publication US 2023/0132864 A1, May 4, 2023
Int. Cl. B26B 19/14 (2006.01); B26B 19/38 (2006.01)
CPC B26B 19/141 (2013.01) [B26B 19/145 (2013.01); B26B 19/146 (2013.01); B26B 19/386 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A rotary electric shaver, comprising:
a main body having a grip part and a blade setting base;
a motor built in the main body and connected to a first driven shaft; and
a head connected to the blade setting base,
wherein in the blade setting base, a plurality of second driven shafts are connected to the first driven shaft,
the head has a setting part in which a plurality of blade units are disposed, and a blade frame that holds the setting part,
each of the blade units has an outer blade part and an inner blade part,
the inner blade part has an inner blade member in which a plurality of blade edges are formed in a circumferential direction, and a base part joined to the inner blade member,
the second driven shaft is connected to the base part, and the inner blade member is configured to rotate around an axis passing through the second driven shaft,
the outer blade part has an annular outer blade member having a sliding contact surface with which the blade edge comes into sliding contact and having a plurality of slits formed in the circumferential direction, a disk-shaped cover disposed inside the outer blade member, a ball, and a support that supports the ball,
the cover has a window having a smaller diameter than the ball, and
a part of the ball surrounded by the cover and the support protrudes from the window,
wherein the support has a ball receiving hole corresponding to the ball on a one-to-one basis and a plurality of claw parts formed at an equal interval in the circumferential direction to protrude from an inner peripheral side of the ball receiving hole, and each of the claw parts is in contact with the ball.