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.

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.

A rotary electric shaver according to the present invention includes an outer blade whose upper surface functions as annular shaving surfaces having multiple hair inlets formed therein, and an inner blade that has a small blade which rotates while coming into sliding contact with a lower surface of the outer blade. The inner blade is an integral structure using a metal material, and has a projection in which an upper surface side is a convex portion and a lower surface side is a concave portion at a center position in a radial direction. An upper end portion of an inner blade drive shaft directly engages with the concave portion so as to be disengageable therefrom.

A rotary electric shaver includes an outer blade whose upper surface functions as annular shaving surfaces having multiple hair inlets formed therein, and an inner blade that has a small blade which rotates while coming into sliding contact with a lower surface of the outer blade. The small blade is formed so that an inner blade base plate is partially erected, and is disposed in at least two rows on a circumference close to an outer periphery and on a circumference close to an inner periphery. There is provided a movable inner blade that has a movable small blade which is vertically movable along a front end surface in a rotation direction of the small blade, with respect to the predetermined small blade.

In an external cutting member (10) which is configured to be used in a hair-cutting unit in combination with a rotatable internal cutting member, a base (11) includes at least one hair-cutting track (21) which is provided with a plurality of hair-entry openings, and an annular base portion (31) located between a central portion (17) of the base (11) and an innermost one of the at least one hair-cutting track (21). The annular base portion (31) is provided with a profiled section which is located between a straight inner section (32) and a straight outer section (33) of the annular base portion (31), which is annular about a central axis (16) of the external cutting member (10), and which is shaped according to a predefined profile, seen in a cross-section of the external cutting member (10) comprising the central axis (16).

A shaving unit includes a cap having an annular shaving track defining an axis. The shaving track is provided with hair entry apertures which have a V-shaped forward edge with a point directed in a cutting direction. Further, a rotary cutter has a plurality of cutter blades, where the rotary cutter is configured to rotate about the axis such that the cutter blades follow the shaving track in the cutting direction to cut hairs protruding through the hair entry apertures. The cutter blades have a V-shaped cutting edge, where a point of the V-shaped cutting edge is directed opposite to the direction of rotation of the rotary cutter.

A shaving system is disclosed comprising a shaving unit (14) and a cleaning device (22), wherein the shaving unit (14) comprises at least one hair-cutting unit having a movable hair-cutting member; the cleaning device (22) comprises a supporting structure for supporting the shaving unit (14), and a receiving space (26) for receiving the shaving unit (14) when the shaving unit (14) is arranged in a cleaning position supported by the supporting structure (24); and the cleaning device (22) comprises a reservoir (32) for containing a cleaning liquid and a fluid pumping unit (38) for transporting the cleaning liquid from the reservoir (32) to the receiving space (26); wherein the shaving unit (14) comprises a driven coupling member (30) which is accessible from an outside of the shaving unit (14) and which is coupled to the movable hair-cutting member such that the movable hair-cutting member is drivable by the driven coupling member (30); the cleaning device (22) comprises a driving coupling member (28) which is accessible from an outside of the cleaning device (22), and an electric actuator (34) coupled to the driving coupling member (28) such that the driving coupling member (28) is drivable by the electric actuator (34); and the driving coupling member (28) and the driven coupling member (30) are arranged such that, in the cleaning position of the shaving unit (14), the driven coupling member (30) is coupled to the driving coupling member (28) such that the movable hair-cutting member is drivable by the driving coupling member (28) via the driven coupling member (30).

A multi-functional small rotary shaving, includes a cutter head cover and a moving cutter assembly. The moving cutter assembly includes moving cutter and support for holding moving cutter, cutter head cover includes cover head and cover body which are integrated up and down, cover head includes cover top and cover wall connected to outer side of cover top, cover top and cover wall enclose to form one cutting cavity for moving cutter to rotate inside, and cover head has multiple hair inlet slots in circumferential direction for communicating inside with outside of cover head; hair inlet slots cross from cover top to cover wall and passes through cover top longitudinally and cover wall transversely at same time, and turning joint between cover top and cover wall has horn-shaped hair guiding openings which correspond to hair inlet slots and which are used for guiding hair into hair inlet slots.

An electric cutter of a hair-like body according to the present invention includes an inner blade that is rotatable in a forward/rearward direction. The inner blade has a plurality of small blades in which a first blade edge is formed on a forward rotation side and a second blade edge is formed on a rearward rotation side. The electric cutter further includes switching means for switching rotation directions of the inner blade to switch between a first mode in which a hair-like body is cut by the first blade edge and a second mode in which the hair-like body is cut by the second blade edge. A rotation speed of the inner blade in the second mode is set to be higher than a rotation speed of the inner blade in the first mode.

A hair-cutting unit (9a) comprises an external cutting member (11a) and an internal cutting member (13a) rotatable relative to the external cutting member about a central axis. The external cutting member comprises hair-entry slots (35) having a slot angle () in a range from 0 to 20 in each radial position of the hair-entry slot. The internal cutting member comprises cutting elements (59a, 59b, 59c) each having a cutting edge (45a, 45b, 45c) having a cutting-edge angle () in a range from 55 to 85. A trailing edge (43) of each hair-entry slot is provided with a hair-retaining structure (47) having an array of hair-abutment surfaces (53) extending transversely relative to the trailing edge and facing the central axis (19).