JP2979257B2 - Electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric razor having a sharp razor blade unit in addition to a razor main blade.

[0002]

2. Description of the Related Art As this type of electric razor, for example,
As shown in Japanese Patent Publication No. 2-48267 and Japanese Patent Publication No. 2-18105, a razor blade unit having a fixed comb blade and a movable comb blade is provided outside the case. Some are provided so as to be rotatable around an axis in a protruding posture and a storage posture falling down to the case side.

[0003]

However, in the above-mentioned prior art, the switching of the attitude of the sharpening blade unit is performed manually, which is troublesome. According to the present invention, in the electric shaver in which the sharpening blade unit is rotatably provided around the axis in the protruding posture and the storage posture as described above, the driving of the rotating mechanism of the sharpening blade unit is electrically driven. By doing so, it is intended to simplify the operation.

[0004]

SUMMARY OF THE INVENTION The present invention provides a razor main blade.
4 and the body case 1 provided with the driving source
A sharp blade unit having a fixed comb blade 6 and a movable comb blade 7
9 protrudes out of the case and the storage position falls down to the case side
It is provided rotatably around the shaft 22 over
In the electric shaver, the razor blade unit 9
The rotation mechanism is a main switch for driving the razor main blade 4 and
Is controlled by an operation switch 37 provided separately.
A forward / reverse rotation type motor 24 separate from the drive source;
The rotation of the blade is transmitted to the razor blade 9 and the razor blade unit
9 is provided with a transmission mechanism 25 for selectively projecting, storing, and rotating by the operation switch 37 . The razor main blade 4 includes a rotary type, a reciprocating type, and a rotary type.
The driving source of the razor main blade 4 includes a motor and an electromagnetic vibrator for AC. The transmission mechanism 25 of the razor blade unit 9 includes gear transmission, friction transmission, wrapping (belt,
Chain) transmission.

[0005]

When the forward / reverse rotation type motor 24 is driven, the blade unit 9 automatically protrudes and retracts via the transmission mechanism 25.

[0006]

According to the present invention, the posture of the protruding / retracting blade unit 9 can be easily switched by electric operation, and the usability is extremely good.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric shaver according to the present invention will be described with reference to the drawings. 1 and 2, a main razor blade 4 including a reciprocating inner blade 2 and an outer blade 3 is provided on an upper portion of a main body case 1 and an inner blade driving mechanism 5 for reciprocating the inner blade 2 right and left. And a sharpening blade unit 9 having a fixed comb blade 6 and a movable comb blade 7. Razor main blade 4
The outer cutter 3 is detachably mounted on the main body case 1 via an outer cutter holder 10, and the inner cutter 2 comes into sliding contact with the inner surface of the outer cutter 3.

The inner blade drive mechanism 5 has an eccentric cam 14 fixed on a shaft 13 of a motor 12 driven by a battery 11 and engages an eccentric pin 15 implanted in the eccentric cam 14 with a vibrator 16. The vibrator 16 vibrates left and right, and the vibrator 1
The inner blade 2 is supported on a drive shaft 17 erected from 6 via an inner blade holder 19, and the inner blade 2 reciprocates on the inner surface of the outer blade 3 in a horizontal direction at a constant stroke. A projection 20 for driving the blade unit is protruded from the side surface of the vibrator 16.

The sharpening blade unit 9 has a fixed comb blade 6 fixed to a holder 21 and a movable comb blade 7 superposed on the surface of the fixed comb blade 6 so as to be reciprocally movable left and right.
The upper ends of the right and left side surfaces of the holder 21 are rotatably supported by a shaft 22 so as to be rotatable. As shown by a solid line in FIG.
By rotating upward about 90 degrees about the center 2, it is possible to switch between a posture protruding outside the case and a storage posture falling down to the case side as shown by a two-dot chain line in FIG. Only when the sharpening blade unit 9 is in the protruding posture, the passive piece 23 protruding from the movable comb blade 7 faces the inside of the case and engages with the projection 20 of the vibrator 16 to move the movable comb. The blade 7 is connected to the inner blade drive mechanism 5 to be in a state where the blade 7 can reciprocate.

The switching between the protruding and retracting postures of the sharp blade unit 9 is performed by transmitting the rotation of a small forward / reverse rotating small motor 24 different from the motor 12 via a transmission mechanism 25 using gears. . The motor 24 is disposed in an upright position below the sharpening blade unit 9 in the main body case 1 so as to be driven by the battery 11, and a worm 27 fixed on a shaft 26 of the motor 24 is attached to the shaft 26. And a worm gear 30 on a driven shaft 29 which is orthogonal to the fan gear, and a gear 31 on the driven shaft 29 is provided with a fan-shaped external gear 32 provided on one side of the holder 21 of the sharpening blade unit 9.
The rotation of the motor 24 causes the sharpening blade unit 9 to rotate around the shaft 22 to protrude, and the reverse rotation causes the sharpening blade unit 9 to rotate in the storage direction. As shown in FIG. 5, the gear 31 on the driven shaft 29 can be meshed with a fan-shaped internal gear 33 on the side of the razor blade unit 9.

As shown in the circuit diagrams of FIGS. 1 and 3, the razor blade unit 9 rotates to the projecting position, and at the same time, the projection 35 protruding from the unit 9 comes into contact with the motor to stop the normal rotation of the motor 24. A switch for restricting the protrusion of the sharpening blade unit 9 and a switch for restricting the rotation of the motor 24 when the sharpening blade unit 9 rotates to the storage position and at the same time the projection 35 comes into contact to stop the reverse rotation of the motor 24. The operation switch 37 of the motor 24 is provided separately from the main switch 39 of the motor 12. Further, a cleaning / display operation switch 40 is provided so that the sharpening blade unit 9 is not driven when the sharpening blade unit 9 is protruded for cleaning or when the sharpening blade unit 9 is displayed in a protruding state. . As shown in the circuit diagram of FIG. 4, the operation switch 40 for cleaning and display is not always necessary. 3 and 4
, 41 is a flip-flop (bistable circuit).

FIG. 6 shows a modification of the transmission mechanism 25, in which the shaft 26 of the motor 24 is disposed in parallel with the shaft 22 of the blade unit 9, and the spur gear 4 on the shaft 26 of the motor 24 is provided.
2 is directly meshed with a fan-shaped external gear 32 on the side of the blade unit 9.

FIG. 7 shows still another modification of the transmission mechanism 25, in which a gear 43 is fixed on the shaft 22 of the razor blade unit 9 and the shaft 26 of the motor 24 is parallel to the shaft 22. The gear 44 on the shaft 26 of the motor 24 and the gear 43 on the shaft 22 of the razor blade unit 9
It is transmitted by 6.

FIG. 8 shows an example in which the transmission mechanism 25 employs friction transmission instead of the gear transmission.
6 is processed into a rough surface, and this is sharply cut into a blade unit 9
Rubber belt 49 attached to the peripheral surface of the fan-shaped friction wheel 47 on the side
To the motor 2 by utilizing the frictional force generated between them.
4 is transmitted to the blade unit 9.

As shown in FIG. 9, a slide base 50 is attached to the main body case 1 so as to be freely slidable up and down, and a sharp blade unit 9 is provided on the slide base 50 so as to protrude around the shaft 22 and to be rotatable. The same can be applied to In this case, the motor 24 and the transmission mechanism 25 are mounted on the slide base 50.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a state in which a sharp blade unit is projected.

FIG. 2 is a perspective view showing a state where a sharp blade unit is projected.

FIG. 3 is a circuit diagram.

FIG. 4 is a circuit diagram of another embodiment.

FIG. 5 is a side view of a transmission mechanism of another embodiment.

FIG. 6 is a perspective view of a transmission mechanism according to still another embodiment.

FIG. 7 is a perspective view of a transmission mechanism according to still another embodiment.

FIG. 8 is a perspective view of a transmission mechanism according to still another embodiment.

FIG. 9 is a longitudinal sectional side view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 4 Razor main blade 6 Fixed comb blade 7 Movable comb blade 9 Cutting blade unit 22 Axis 24 Forward / reverse rotation type motor 25 Transmission mechanism

Claims (1)

(57) [Claims] 1. A posture and a case in which a razor blade unit 9 having a fixed comb blade 6 and a movable comb blade 7 protrudes out of the case with respect to a main body case 1 provided with a razor main blade 4 and a driving source thereof. In the electric razor provided rotatably around the shaft 22 in the storage posture falling to the side, the rotating mechanism of the razor blade unit 9 comprises a razor main blade.
Operation switch provided separately from the main drive switch
A forward / reverse rotation type motor 24 which is controlled by the drive source 37 and which is different from the drive source; and transmits the rotation of the motor 24 to the sharpening blade 9 to switch the sharpening blade unit 9 to the operation switch 37.
And a transmission mechanism 25 for selectively projecting, storing, and rotating the electric shaver.