JP2979255B2 - 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 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. 14744/1990, with respect to a main body case having a razor main blade, a projecting use position in which a razor case provided with a razor blade is shifted upward and a non-use position is shifted downward. In some cases, the razor is mounted so as to be able to move up and down so that it can be sharpened easily in the use position, and does not hinder the use of the razor main blade when it is stored in the non-use position.

[0003]

However, in the above-mentioned prior art, the hand is directly put on the case, and the case is vertically moved up and down by manual operation, so that the operation is troublesome. . In view of the above, the present invention aims to simplify the operation of an electric shaver provided with a slewing case that can be raised and lowered by using a motor or a shape memory alloy as a drive source of the lifting mechanism. The purpose is to:

[0004]

According to the electric razor of the present invention, the main body case 1 provided with the razor main blade 4 is provided with a razor.
The sled case 10 is placed in an upper use position and a lower non-use position.
The case 10
In the electric razor provided with the sharpening blade 9, the raising and lowering mechanism of the sharpening case 10 includes a motor 29 and the motor 2.
9 is transmitted to the case 10 and the case 10
And a power transmission mechanism 30 for raising and lowering the motor. The transmission mechanism 30 includes gear transmission, friction transmission, wrapping (belt, chain) transmission, and the like. As the drive source of the lifting mechanism,
In addition to the motor 29, the switch operation and the shape memory alloy spring 40 as illustrated in FIG. 9, the shape memory alloy spring 40
Means for selectively changing the temperature and deforming
It can also be configured .

[0005]

When the motor 29 is used as a drive source, the drive case automatically moves the case 10 up and down via the transmission mechanism 30. When the shape memory alloy spring 40 is used as a driving source, the shape case 1
0 can be automatically raised and lowered.

[0006]

The motor 29 or the shape memory alloy spring 40
Since the case 10 can be automatically moved up and down as much as possible, the usability is extremely good as compared with a conventional case in which the case 10 is moved up and down manually.

[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 razor main 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 will be equipped. Outer blade 3 of razor main blade 4
Is detachably mounted on the main body case 1 via an outer cutter holder 8, and the inner cutter 2 is in 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. Further, a projection 20 for driving a sharp blade is provided on the side surface of the vibrator 16.

A sharp case 10 is attached to the upper outer surface of the main body case 1 so as to be vertically movable between a use position protruding above the main body case 1 and a non-use position for retracting and storing below. The sharpening case 10 has a sharpening blade 9, and a slide claw 10 a protruding from the back surface of the sharpening case 10 is inserted into a vertically long guide groove 18 provided in the main body case 1 so as to prevent slipping and slide freely. Is engaged.
The sharpening blade 9 is composed of a fixed comb blade 6 fixed to the holder 21 and a movable comb blade 7 superposed on the fixed comb blade slidably in the left-right direction. The part is pivotably supported by a shaft 22,
An attitude of projecting out of the case by turning upward about 90 degrees about the shaft 22 as shown by a two-dot chain line in FIG.
As shown by a solid line in FIG. Only when the sharpening case 10 is raised to the use position and the sharpening blade 9 is in the protruding position, the passive piece 23 protruding from the movable comb blade 7 faces the inside of the case and the vibration is generated. The movable comb blade 7 is engaged with the projection 20 of the child 16, and is connected to the inner blade drive mechanism 5, so that the movable comb blade 7 can reciprocate.

The switching between the storage posture and the protruding posture of the sharpening blade 9 is performed in conjunction with the vertical movement of the sharpening case 10. That is, as shown in FIG. 3, an eccentric hole 24 is provided at a position deviated from the shaft 22 on one side surface of the holder 21, and an operating arm 26 pivotally connected to the eccentric hole 24 via a pin 25. It is assembled in the case 10.
An operating piece 26a is provided at a lower end of the operating arm 26, and the operating piece 26a is engaged with a slit 27 opened in the wall 1a of the main body case 1. When the sharpening case 10 is in the lower non-use position, the operating piece 26a of the operating arm 26 comes into contact with the lower end of the slit 27 to restrict the position as shown in FIG. The blade 9 is in the attitude of being stored in the case. As shown in FIG. 4, when the sharp case 10 is raised, the operating piece 26 a is restricted from coming into contact with the upper end of the slit 27 during the upward movement.
Further, by raising the sharpening case 10 to the use position, the operating arm 26 is relatively pulled down with respect to the sharpening case 10, whereby the sharpening blade 9 moves the shaft 22. It swings up and down to the center and projects from the case 10. When the case 10 is lowered, the operation piece 26a is firstly moved
7, and the lower case 10 is further lowered to the non-use position to relatively move the operating arm 2.
6 is pushed upward, and the sharp blade 9 swings downward and is housed in the sharp case 10.

1 and 2, the raising and lowering operation of the sharpening case 10 is performed by transmitting the rotation of a small forward / reverse rotating small motor 29 different from the motor 12 through a transmission mechanism 30 using gears. It is done automatically. The motor 29 is disposed in a horizontal position below the sharpening blade 9 in the sharpening case 10 so as to be driven by the battery 11, and sharpens a pinion 32 fixed on a shaft 31 of the motor 29. While facing the opening 33 of the case 10, the main body case 1
A rack 34 is provided in the vertical direction on the side, and the sharp case 10 is raised by the forward rotation of the motor 29, and the sharp case 10 is lowered by the reverse rotation.

The operation switch 37 of the motor 29 is provided separately from the main switch 39 of the motor 12. As shown in the circuit diagram of FIG.
The motor 12 for driving the inner blade and the motor 29 for raising and lowering are connected in parallel via switches 39 and 37, respectively. The sharpening case 10 can be freely raised and lowered regardless of the driving of the inner blade 2, and The lint of the sled case 10 can be cleaned.
The switch 37 is a double-throw switch, which is connected to any switch only when pressed, and when released, returns to the neutral OFF position by a biasing means such as a spring. Power is supplied to the motor 29 by connecting a flexible lead 45 to the lower end of the sharpening case 10 as shown in FIG. 2 and connecting the lead 45 to the pocket 46 of the main body case 1 from the outside. There is no disconnection due to the force of Further, instead of the lead wire 45, the main body case 1 and the slewing case 1 are used.
A slidable slip connection fitting may be provided between the surfaces facing the zero.

In the circuit of another embodiment shown in FIG. 6, the raising and lowering mechanism of the case 10 is connected to the motor 12 for driving the inner blade, and the switch 37 is provided only when the inner blade 2 is driven.
Is a slide operation. The switch 37 is 2
Step operation can be performed, an OFF position, a first stage for reverse rotation of the motor 12 for retracting the slewing case 10, and a second stage for forward rotation of the motor 12 for projecting the slewing case 10. Consists of For this reason, even if the switch 37 is advanced from the OFF position to the first stage, the sharp case 10 remains in the retracted storage state, and the motor 12 rotates forward only after proceeding to the second stage, and the sharp case 10 protrudes and becomes usable. After use, the OFF position is established from the second stage through the first stage, so that it is easy to prevent the case 10 from being forgotten to be stored. Reference numeral 37 'denotes an upward and downward movement limit switch of the sharply moving case 10.

The circuit shown in FIG. 7 further uses a switch having a multi-stage contact structure. When the switch is advanced from the OFF position 390 to one side, it becomes a first position 391 for driving the inner cutter 2, and when further advanced, the inner cutter 2 stops. , The second projecting case 10
Position 392 is reached. When the switch is returned to the first position 391 in this protruding state, the sharp blade 9 and the inner blade 2 are driven. On the contrary, when the case 10 is advanced from the OFF position 390 to the other side, it becomes the third position 393 in which the sharp case 10 is retracted and stored. If the inner blade 2 and the sharpening blade 9 can be driven and operated only on one side with the OFF position 390 as a boundary, it becomes easier to use.

In each of the above embodiments, the battery 11 for driving the inner blade is used.
The battery is also used as a driving battery for the squeeze case 10, but instead of this, independent batteries 11 and 11 'are provided as shown in FIG. Can be operated. Of course, in this case,
It is also possible to drive the razor blade 9 with the motor 29 using an independent vibrator having the same structure as the vibrator 16 for the inner blade. Further, by doing so, there is no need for a power connection means such as a cord or a slip connection fitting between the main body case 1 and the slewing case 10.

Contrary to the above embodiment, the motor 29 and the pinion 32 may be provided on the main body case 1 side, and the rack 34 may be provided on the case 10 side. Transmission mechanism 3
As 0, it is possible to replace the above-mentioned gear transmission with friction transmission of a friction wheel, a belt or the like.

FIG. 9 shows a shape memory alloy spring 40 and a shape memory alloy
The temperature of the spring 40 is selectively changed by operating a switch.
Then, an embodiment constituted by means for deforming is shown. The shape memory alloy spring 40 has a coil spring 41 for ascending drive, which memorizes the shape in the stretched state and expands by heating above the transformation point, and a coil spring 42 for descending drive, which is memorized in the contracted state and shrinks by heating. Consists of The springs 41 and 42 for ascending and descending driving are provided in the sharp case 10.
Is disposed between the lower part of the main body case 1 and both ends of each of the coil springs 41 and 42.
Connect via 3.44.

When the case 10 is in the lower non-use position, the switch 43 of the coil spring 41 for driving up is turned on, and a current is caused to flow through the coil spring 41. , The reverse transformation from the martensite phase to the austenite phase occurs. At that time, the coil spring 42 for lowering drive is extended to return to the original stretched state while generating a strong force. Push up to the use position. To return from the use position to the non-use position, the switch 44 of the coil spring 42 for lowering drive is turned on, and a current is caused to flow through the coil spring 42 so that the coil spring 42 self-heats and undergoes reverse transformation. In order to return to the contracted state, the coil spring 41 for ascending drive is contracted, and the case 10 is pulled down to the non-use position.

In the shape memory alloy spring 40, instead of self-heating, a heater coil can be wound around the shape memory alloy spring 40 to indirectly heat it above the transformation point. However, whichever heating method is used, the main body case 1 and the sharp case 10 around the shape memory alloy spring 40 are each made of a heat-resistant material.

[0020] As shown in FIG.
The drive source of the lifting mechanism 0 is formed by replacing one of the coil spring 41 for rising drive or the coil spring 42 for lowering drive made of a shape memory alloy with a bias spring formed of a normal spring material. It may be configured by a combination of a memory alloy spring and a bias spring.

As the shape memory alloy spring 40, instead of using a one-way shape memory alloy spring as in the above embodiment, a reversible shape memory alloy spring that reversibly deforms in response to switching between high temperature and low temperature can be used. . In this case, the heating means of the reversible shape memory alloy spring is self-heating or indirect heating by a heater coil as in the case of the above embodiment, but the cooling means is an electronic cooling element utilizing the Peltier effect. What is necessary is just to cool by bonding to an alloy spring.

[0022] As shown in Fig. 11, a sharpening case 9 may have a sharpening blade 9 always projecting upward, or may have a sharpening blade 9 always projecting sideways as shown in Fig. 12. The same applies. The razor main blade 4 can be similarly applied to a rotary type or a rotary type instead of the above-mentioned vibration type.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view.

FIG. 2 is an exploded perspective view.

FIG. 3 is a vertical sectional side view showing a state when the sharp case is not used.

FIG. 4 is a longitudinal sectional side view showing a state when the sharp case is used.

FIG. 5 is a circuit diagram.

FIG. 6 is a circuit diagram showing another embodiment.

FIG. 7 is a circuit diagram showing still another embodiment.

FIG. 8 is a circuit diagram showing still another embodiment.

FIG. 9 is a longitudinal sectional front view showing another embodiment in a partially broken state.

FIG. 10 is a longitudinal sectional front view showing still another embodiment in a partially broken state.

FIG. 11 is a side view showing still another embodiment.

FIG. 12 is a side view showing still 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 29 Motor 30 Transmission mechanism 40 Shape memory alloy spring

Claims (2)

(57) [Claims] A main body case provided with a razor main blade.
Hand, mounted vertically movably I the Kiwazori case 10 was above the use position and the non-use position beneath Niwa, the electric shaver with its Kiwazori case 10 NiKiwazori blade 9, verge An electric shaver, characterized in that the lifting mechanism of the sled case (10) includes a motor (29) and a transmission mechanism (30) for transmitting the rotation of the motor (29) to the sled case (10) to raise and lower the case (10). 2. A main body case 1 provided with a razor main blade 4.
In contrast, the sharpening case 10 is attached to the upper use position and the lower non-use position so as to be movable up and down, and the sharpening case 10 is provided with the sharpening blade 9. Memory spring 40 as a driving source for the lifting mechanism of the first embodiment , and switch operation of the shape memory alloy spring 40.
Means for selectively changing the temperature depending on the operation and deforming
Electric shaver, characterized in that you have al configuration.