JP2000254367A - Vibrating razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve shaving quality in a vibrational razor using a motor, solenoid, piezoelectric actuator or the like by integrally forming a shaving agent feeder to skin surface. SOLUTION: A vibrational razor 10 includes a piezoelectric actuator 12 and its driving circuit (power source and oscillator) 13 inside a case 11. The base of the piezoelectric actuator 12 is fixed on a fixing part 11A of the case 11, and a blade 15 is attached to the tip of the actuator 12 through a support 14 so as to face outside from an opening 11C formed on a front guide 11B of the case 11. A shaving agent feeder 40 for skin surface on which the blade 15 passes is integrally formed. This shaving agent feeder 40 comprises a bag- form cartridge 41 in which a shaving agent is enclosed and an applicator 42 disposed in front of the shaving direction of the blade 15 in the front guide 11B of the case 11, and exudes the shaving agent onto skin surface by capillarity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration type razor using a motor, a solenoid, a piezoelectric actuator or the like.

[0002]

2. Description of the Related Art Conventionally, there is an electric razor using a motor or a piezoelectric actuator.

[0003]

However, the conventional electric razor, which involves shaving the blade, which is rotated or vibrated by a motor or a piezoelectric actuator, directly and strongly against the skin, hurts the keratin of the skin.

An object of the present invention is to improve the shaving taste of a vibrating razor without damaging the skin keratin.

[0005]

The present invention according to claim 1 is a vibrating razor including a shaving agent supply section for a skin surface.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) (FIGS. 1 to 3) As shown in FIG. 1, a vibrating razor 10 includes a piezoelectric actuator 12 and a drive circuit (power supply and oscillation circuit) inside a case 11 as shown in FIG. 13, a base end of the piezoelectric actuator 12 is fixed to a fixing portion 11A of the case 11, and a blade 15 attached to a front end of the piezoelectric actuator 12 via a support 14 is provided on a front guide 11B of the case 11. It faces the outer surface from the opening 11C. A drive switch 16 for the piezoelectric actuator 12 is provided on the upper surface of the case 11.

In the vibrating razor 10, the blade 15 may be, for example, a razor blade or a clipper blade. Also, blade 1
The attachment of the 5 to the support 14 can be by gluing or a releasable fit.

The piezoelectric actuator 12 is, for example, shown in FIG.
(A) is composed of a bimorph type piezoelectric element as shown in FIG. 1, and piezoelectric bodies 22 and 23 are provided on both sides of a metal diaphragm 21, and the support 14 of the blade 15 is provided at the tip of the diaphragm 21.
And one end of the AC power supply 13A is connected to the diaphragm 2
1 and the other end is connected to each of the two piezoelectric bodies 22 and 23. As the piezoelectric bodies 21 and 22, for example, piezoelectric ceramics such as barium titanate, lead niobate, lead titanate, and lead zirconate titanate are used. When an AC voltage is applied to the piezoelectric bodies 22 and 23, one piezoelectric body 22 expands and the other piezoelectric body 23 contracts and flexes in the direction of arrow a in FIG. 2 in a half cycle of the AC voltage, and reverses in the next half cycle. Then, the piezoelectric body 22 contracts and the other piezoelectric body 23 expands and flexes in the direction of arrow b in FIG. Thereby, the piezoelectric actuator 1
The second diaphragm 21 vibrates up and down in the directions of arrows a and b according to the application of the AC voltage. The AC waveform to be applied may be a sine wave or a rectangular wave, and is preferably a waveform having a large voltage change per time. The vibration frequency of the blade 15
The frequency is preferably 30 Hz or more from the viewpoint of the vibration speed, and is preferably 200 Hz or less from the viewpoint of the amplitude of the blade 15. Good shaving efficiency can be obtained in this vibration frequency range. A more preferred range is 60
~ 180 Hz.

The material characteristics of the piezoelectric actuator 12 and the conditions for setting the angle of the blade 15 with respect to the skin, which are necessary for improving the shaving quality of the vibrating razor 10, will be described below.

(A) Piezoelectric constant of piezoelectric actuator 12 The piezoelectric actuator 12 of the vibrating razor 10 is provided with a piezoelectric constant d = generated strain (m) / applied electric field strength (V) =
Piezoelectric bodies 22 and 23 made of -360 × 10 ^-12 [m / V] lead zirconate titanate were formed by sintering on both sides of a diaphragm 21 made of a stainless steel plate. Diaphragm 2
The length, width, and thickness of 1 are 20 mm, 60 mm, and 0.2 mm, and the sizes of the piezoelectric bodies 22 and 23 are 18 mm, 53 mm, and 0.18 mm.
And In the present invention, the piezoelectric constant d is such that the direction of the electric field (the direction normal to the electrode surface) is the thickness direction of the plate (three-axis direction), and the strain direction is the length direction of the plate (one-axis direction) generally piezoelectric constant in this direction is referred to as d ₃₁ (FIG. 2
(B)).

On the other hand, as Comparative Example 1,
A vibrating razor 10 was prepared which was different only in that the piezoelectric constants of the piezoelectric bodies 22 and 23 of the piezoelectric actuator 12 were set to d = −160 × 10 ⁻¹² [m / V].

As Comparative Example 2, a commercially available light razor was prepared. In Example 1 and Comparative Examples 1 and 2, shaving off unwanted hair was performed and the shaving performance was compared.
I got At this time, for the vibrating razor 10 of Example 1 and Comparative Example 1, a voltage of 170 V / 80 Hz was applied to the piezoelectric body 2.
The blade 15 was vibrated by applying a voltage to the blades 2 and 23.

[0013]

[Table 1]

At this time, the piezoelectric constant of the first embodiment is -180 to -180.
As long as the range was extended to the range of −400 × 10 ⁻¹² [m / V], the same shaving performance as in Example 1 could be confirmed. That is, the piezoelectric constant of the rolling actuator 12 is set to -180 to -400 × 10
It is recognized that the shaving taste can be stably improved by setting the range to ^-12 [m / V].

(B) The contact angle α of the blade 15 with the skin (FIG. 3) When the vibrating razor 10 is used, the front guide 11B of the case 11, which is brought into contact with the skin, is used as a reference surface (surface following the skin).
The angle α formed by the blade 15 on the back side of the reference surface (on the anti-shave advance direction side of the blade 15) is referred to as a contact angle. As a result of changing this α and comparing the shaving performance, Table 2
I got

[0016]

[Table 2]

According to Table 2, by setting the contact angle α of the blade 15 to the skin at 5 to 60 degrees, the unshaved length of the hair can be shortened, and the shaving taste can be further improved.

(C) Vibration direction angle β of blade 15 with respect to skin (FIG. 3) The angle β formed by the direction in which blade 15 vibrates when vibrating razor 10 is used is referred to as a vibration direction angle, and this β is changed. Table 3 was obtained as a result of comparing the shaving performance.

The vibration direction of the blade 15 is perpendicular to the longitudinal center line of the piezoelectric actuator 12. Tip of piezoelectric actuator 12 (part with blade 15)
Strictly vibrates along an arc-shaped trajectory, but the amplitude of this vibration is very small (about 1/100) of the length of the piezoelectric actuator 12 (from the fixed portion to the tip). Was made to vibrate almost linearly.

[0020]

[Table 3]

According to Table 3, by setting the vibration direction angle of the blade 15 with respect to the skin at 15 to 75 degrees, damage to the keratin of the skin can be minimized, the remaining length of the shaved hair can be shortened, and the shaving taste can be reduced. Is further improved.

However, in the case of the vibrating razor 10,
As shown in FIG. 1, a shaving agent supply unit 40 is provided for the skin surface through which the blade 15 passes. The shaving agent supply unit 40 includes, for example, a bag-shaped cartridge 41 in which a shaving agent such as a foam type, a liquid type, and a gel type containing polyethylene glycol, propylene glycol, or polypropylene glycol is enclosed, and a case 11.
And a coating unit 42 disposed in the front guide 11B in the front in the direction in which the blade 15 advances. Coating part 42
Is formed so as to communicate with the opening of the cartridge 41, for example, by gradually pulling out the shaving agent in the cartridge 41 by the capillary force against the skin surface based on its own capillary action, A shaving agent is applied to the surface of the skin through which the skin 15 passes to moisturize the skin hit by the blade 15 in advance. The cartridge 41 is used for replacement.

Therefore, according to the present embodiment, the following operation and effect can be obtained. (Effects Corresponding to Claim 1) The blade 15 is used while supplying a shaving agent to the skin surface where the blade 15 passes in a vibrating state, so that the skin hit by the blade 15 is moistened in advance, and the blade 15 slides on the skin. As a result, the keratin of the skin is not damaged, the blade 15 does not need to be pressed strongly against the skin, and the shaving taste can be improved.

(Function and Effect Corresponding to Claim 2) As the shaving agent supply unit 40, a cartridge 41 in which a shaving agent is sealed, and an application unit 4 for applying the shaving agent in the cartridge 41 to the skin surface by capillary force.
2 was used. Therefore, the configuration of the shaving agent supply section 40 can be simplified.

Second Embodiment (FIGS. 4 and 5) The vibration type razor 10 of the second embodiment is substantially different from the first embodiment in the configuration of the shaving agent supply section 30. The shaving agent supply section 30 includes, for example, a tank 31 in which a foaming type, a liquid type, a gel type, or the like containing polyethylene glycol, propylene glycol, polypropylene glycol, or the like is stored.
And a pump 32 for pumping the shaving agent in the tank 31
And a nozzle-shaped application section 33 (FIG. 4C) for discharging and applying the shaving agent pumped by the pump 32 to the skin surface. The application section 33 is provided with an opening 11C provided in the front guide 11B which is brought into contact with the skin of the case 11.
Thus, the blade 15 is disposed in front of the shave advance direction.

The pump 32 is driven by the vibration of the piezoelectric actuator 12. As shown in FIG. 5, the pump 32 includes a guide rail 3 provided inside the lower surface of the case 11.
4A, and upper and lower slides 35A and 35B slidable on guide rails 34B provided on the lower surface of the piezoelectric actuator 12, respectively.
A pump body 36 is interposed between A and 35B, and the pump body 16 is expanded and contracted by the vibration of the upper slide 35A accompanying the vibration of the piezoelectric actuator 12 to perform a pumping action.
By this pumping action, the suction valve 37A of the suction pipe 37 connected to the tank 31 and the discharge valve 38A of the discharge pipe 38 connected to the coating section 33 are alternately opened and closed, and the shaving agent is fed under pressure. At this time, the pump 32
The knob 39 integrated with the lower slide 35B is attached to the case 1
4, the discharge flow rate is increased and adjusted by moving the pump body 36 to the tip side of the piezoelectric actuator 12 where the amplitude is large using the knob 39 (FIG. 4).
(B)), the discharge flow rate can be reduced and adjusted by moving to the opposite side (FIG. 4 (A)).

Therefore, according to the present embodiment, the following operation and effect can be obtained. (Functions and Effects Corresponding to Claims 3 and 4) The piezoelectric actuator 12 is used as the vibration surface of the blade 15, and a tank 31 containing a shaving agent and a pump 32 are used as the shaving agent supply unit 30, and the pump 32 It was driven by the vibration of the piezoelectric actuator 12. Therefore, by vibrating the blade 15 by the piezoelectric actuator 12, lightly applying the blade 15 to the skin and sliding along the skin, and at the same time, supplying a shaving agent to the skin hitting the blade 15 in advance to provide moisture. By improving the sliding of the blade 15, the keratin of the skin is not further damaged, the blade 15 is not pressed strongly against the skin, and relatively long and fine hair such as wasted limbs of the limbs can be easily shaved. Can be performed and the shaving taste can be stably improved. Further, the vibration of the blade 15 and the supply of the shaving agent can be simultaneously driven by the same drive source (piezoelectric actuator 12), and the vibration of the blade 15 and the configuration of the shaving agent supply unit 30 can be simplified.

(Third Embodiment) (FIG. 6) The vibration type razor 10 of the third embodiment is substantially different from the first embodiment in the configuration of the shaving agent supply section 50. The shaving agent supply section 50 is constituted by a sheet 51 impregnated with a shaving agent.
1 is used in the front guide 11 </ b> B of the case 11 in front of the blade 15 in the shave advance direction. The sheet 51 is used for replacement.

Further, in the present invention, when a piezoelectric actuator is used, the sound is quieter, the mechanism is simpler, lighter, and the hair can be shaved more efficiently than a conventional motor type or solenoid type electric shaver. This has the effect.

[0030]

As described above, according to the present invention, in a vibrating razor, the shaving taste can be improved without damaging the skin keratin.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a vibration type razor according to a first embodiment.

FIG. 2 is a schematic view showing an assembly of a piezoelectric actuator and a blade.

FIG. 3 is a schematic diagram showing an angle setting state of a blade with respect to skin.

FIG. 4 is a schematic view showing a vibrating razor according to a second embodiment.

FIG. 5 is a schematic diagram showing a pump and a slide structure thereof.

FIG. 6 is a schematic diagram showing a vibrating razor according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vibration type razor 12 Piezoelectric actuator 15 Blade 30, 40, 50 Shaving agent supply part 31 Tank 32 Pump 41 Cartridge 42 Coating part

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Katsutoshi Hara 2606 Kabane-cho, Akaba, Kato, Haga-gun, Tochigi Prefecture (72) Inventor Kazuyuki Uehara 2606 Kabane-cho, Akabane-cho, Haga-gun, Tochigi Kao Corporation (72) Inventor Seiki Osawa 2606 Akabane, Kakaicho, Haga-gun, Tochigi Pref.

Claims (4)

[Claims] 1. A vibrating razor comprising a shaving agent supply unit for a skin surface. 2. The vibrating razor according to claim 1, further comprising a cartridge in which a shaving agent is sealed as the shaving agent supply unit, and a mechanism for applying the shaving agent in the cartridge to a skin surface by a capillary force. 3. The vibrating razor according to claim 1, wherein a tank storing a shaving agent and a pump are used as the shaving agent supply unit. 4. The apparatus according to claim 1, wherein said blade is made oscillating by a piezoelectric actuator, and a tank storing a shaving agent and a pump are used as said shaving agent supply unit, and said pump is driven by the vibration of said piezoelectric actuator. Vibrating razor as described.