WO2004020161A1

WO2004020161A1 - Personal electric beauty device

Info

Publication number: WO2004020161A1
Application number: PCT/JP2003/010802
Authority: WO
Inventors: Ryo Motohashi; Minoru Kurosawa; Satoshi Nakayama; Makoto Fujiwara
Original assignee: Matsushita Electric Works, Ltd.
Priority date: 2002-08-27
Filing date: 2003-08-26
Publication date: 2004-03-11
Also published as: AU2003261732A1; JPWO2004020161A1; JP4123232B2

Abstract

A surface acoustic wave linear motor is used as a driver of a small, lightweight personal electric beauty device such as an electric razor, an electric clipper, or an electric toothbrush. The personal electric beauty device comprises a housing, a beauty element held in the housing, and a reciprocator for reciprocating the beauty element. The reciprocator is reciprocatingly driven by a surface acoustic wave linear motor. The surface acoustic wave linear motor is composed of a stator and a slider movable over the surface of the stator and coupled to the reciprocator. A transducer electrode is provided on either the stator or the slider. By applying a high-frequency voltage to the electrode, the slider is reciprocatingly driven over the surface of the stator.

Description

Specification

Electric electric beauty machine

The present invention includes an electric hairdressing and beauty device for personal use, and more specifically, a hairdressing and beauty element such as an electric razor, an electric hair clipper, and an electric toothbrush that performs desired hairdressing and beauty treatment by being reciprocated by a built-in motor. And personal electric hairdressing and beauty equipment. Background art

In general, electric razors, electric clippers, and electric toothbrushes incorporate a motion conversion device that converts the rotational movement of the built-in motor into reciprocating movement, and the inner blade of an electric razor, the movable blade of an electric clipper, and the Such a barber / cosmetic element is connected to this motion conversion device and reciprocated to perform desired barber / cosmetic processing. Such a motion conversion device has a low efficiency in converting motion from rotary motion to reciprocating motion. Therefore, in recent years, from the viewpoint of efficiency, a hairdressing and beauty appliance using an electromagnetically driven linear actuator has been provided. The linear actuator is composed of a stator having a coil and a magnetic movable element, and performs a desired beauty treatment by reciprocally driving the movable element with respect to the stator by electromagnetic force. However, in the electromagnetic actuator type linear actuator, the coil for forming the magnetic field for reciprocatingly moving the mover becomes large, and the entire linear actuator becomes large and heavy. It was an obstacle in reducing the weight.

Disclosure of the invention

The present invention has been made in view of the above points, and an object of the present invention is to provide a personal electric beauty appliance which can be reduced in size and weight. A hairdressing and beauty device according to the present invention is an electric razor, an electric hair clipper, and an electric toothbrush, and a housing gripped by a user's hand, a hairdressing element held by the housing, and reciprocating the hairdressing element. Reciprocator and this reciprocator And a motor for operating the motor. In the case of an electric razor, the inner blade that slides on the outer blade is the hairdressing element, in the case of an electric clipper, the movable blade that slides on the fixed blade is the hairdressing element, and in the case of an electric toothbrush, the toothbrush is the hairdressing element. Make up the beauty element. The motor is a surface acoustic wave linear motor, and includes a stator and a slider movable on the surface of the stator and coupled to the reciprocator. A transducer electrode is formed on one of the stator and the slider, and the slider is reciprocally driven on the surface of the stator by applying an AC voltage to the electrode. By using the surface acoustic wave linear motor in this manner, an efficient, compact and lightweight barber / beauty apparatus can be provided.

In the above motor, an elastic body is provided for bringing the slider into contact with the stator at a predetermined contact pressure, and an appropriate frictional force is applied between the two, so that the slider is efficiently driven back and forth with respect to the stator. . In a preferred embodiment, the motor includes a frame for fixedly supporting the stator, and a shuttle is slidably supported on a linear guide formed on the frame. The shuttle holds the reciprocator and the slider, and includes a shuttle. And the slider are connected by an elastic body, and the slider is urged to the surface of the stator.

A panel can be used as the elastic body. In the case of an electric razor, it is preferable to urge the slider against the stator using a spring that urges the inner blade against the outer blade. . In this case, the panel mounted on the reciprocator is compressed between the inner cutter and the slider, and the inner cutter and the slider can be urged against the outer cutter and the stator, respectively.

In addition, the stator is supported on the base so as to be movable along the direction orthogonal to the shuttle sliding direction, and the surface of the stator is fixed to the slider by the elastic body arranged between the base and the stator. It is also possible to make a biasing contact. In this case, since the elastic body is not moved together with the slide, it can be easily assembled in the frame.

The advantages and other advantages of the invention described above will be apparent from the following description of embodiments with reference to the drawings.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a partially cutaway front view showing an electric shaver according to one embodiment of the present invention. Fig. 2 is a side sectional view of the electric shaver.

FIG. 3 is a perspective view of a surface acoustic wave linear motor used in the electric shaver.

FIG. 4 is a front view showing the surface acoustic wave linear motor to which the reciprocator is fixed.

FIG. 5 is a side view showing the surface acoustic wave linear motor to which the reciprocator is fixed.

FIG. 6 is a side view showing a modification of the above linear motor.

Figure 7 is a front view of another surface acoustic wave linear motor applied to an electric razor.

FIG. 8 is a side view of the above surface acoustic wave linear motor.

FIG. 9 is a partially cutaway front view showing an electric toothbrush according to a second embodiment of the present invention.

FIG. 10 is a side sectional view of the electric toothbrush.

FIG. 11 is a perspective view showing a surface acoustic wave linear motor used for the electric toothbrush.

FIG. 12 is a partially cutaway front view showing an electric toothbrush using another surface acoustic wave linear motor. BEST MODE FOR CARRYING OUT THE INVENTION

FIGS. 1 to 4 show a first embodiment in which the personal electric beauty appliance of the present invention is applied to an electric razor. The razor head 20 is driven by a surface acoustic wave (SAW) linear motor 50 housed therein. Razor is performed by reciprocating the inner blade 22, ie, the hairdressing element. The electric shaver includes a housing 10 that houses a rechargeable battery 15 together with a linear motor 50, and a detachable blade holder 30 at an upper end of the housing 10. The blade holder 30 includes a pair of outer blades 21 and forms a razor head 20 with the inner blade 22 held by a reciprocator 40 protruding from the upper end of the housing. The outer blade 21 is coupled to the blade holder 30 so as to be able to be pressed down, and the outer blade 21 and the inner blade 22 can be pressed down against the force of the panel pressing the inner blade 22 against the outer blade 21. . The blade holder 30 is further provided with a long beard cutter unit between the outer blades 21. The cutter unit includes an outer cutter 31 and an inner cutter 32. The inner cutter 32 is connected to a reciprocator 40, and is driven to reciprocate simultaneously with the inner cutter 22.

As shown in FIG. 3, the surface acoustic wave (SAW) linear motor 50 includes a stator 61 held by a frame 52 fixed to the upper end of the housing 10 and a slider 62 movably supported by the frame 52. And The frame 52 is formed of an insulating synthetic resin and has a base 53 and a linear guide 55 parallel to the base. A shuttle 56 is slidably held on the linear guide 55. The shuttle 56 supports a holder 58 via a coil spring 57, and a slider 62 is fixed to the holder 58.The spring 62 of the coil spring 57 causes the slider 62 to contact the surface of the stator 61 at a predetermined contact pressure. Press on. The coil panel 57 is short and has little bending, but presses the slider 62 against the stator 61 with sufficient panel force. The stator 61 is an elastic body made of 60 X 1 5 X 1 mm approximately rectangular thin substrate formed of LiNbO ₃ (lithium niobate), each end portion in the longitudinal direction, the transducer electrodes 65 of the comb is It is formed by vapor deposition. The slider 62 is a square thin plate of about 4 × 4 × 0.3 mm made of silicon, and is pressed against the surface of the stator 61 by the coil spring 57. As shown in FIGS. 4 and 5, a reciprocator 40 is fixed to the shuttle 56, and the inner blades 22, 32 attached to the reciprocator 40 are reciprocally driven along the longitudinal direction of the linear guide 55 together with the slider 62. Is done.

A control circuit for applying a high-frequency AC voltage to the transducer electrode 65 formed on the stator 61 is formed on the substrate 12 housed in the housing 10. When a high-frequency voltage is applied to each electrode 65, a surface acoustic wave (Rayleigh wave) propagates in one longitudinal direction on the surface of the stator 61, and reverses a slider 62 pressed against the stator 61. Move in the direction. That is, by applying a high-frequency voltage to both electrodes 65 so that surface acoustic waves (Rayleigh waves) in the same direction propagate on the surface of the stator 61, the slider 62 is reciprocally driven, and the shuttle 56, The inner blades 22, 32 are reciprocally driven via the reciprocator 40. Stops 66 abutting the shuttle 56 are formed at both ends in the longitudinal direction of the linear guide 55, and determine the amplitude of the shuttle 56, that is, the amplitude of the reciprocator 40.

As the high frequency voltage, a frequency equal to the resonance frequency of the transducer electrode 65, for example, 3 V to 70 V at 10 MHz is applied, and the slider 62 is pressed against the stator 61 with a contact pressure of about 30 N. .

In the above embodiment, forming a slider 62 which Nag intended force present invention showing an example of forming the transducer electrode 65 is not necessarily limited only to this the stator 61 in LiNbO ₃ as an elastic member (niobium Sanli lithium) Then, a transducer electrode is formed here, and the stator 61 is made of silicon. It may be.

FIG. 6 shows a modification of the above embodiment, in which a slider 62 is pressed against a stator 61 by using a panel 64 that urges an inner blade 22 against an outer blade 21. The reciprocator 40 integrally formed with the shuttle 56 is a cylindrical body projecting up and down of the shuttle 56, and a compression coil panel 64 is housed therein. The compression coil panel urges the inner blade 22 upward with the panel. Then, the slider 62 is biased against the stator 61 to generate an appropriate contact pressure between the slider 62 and the stator 61. The inner blade 22 is vertically movably coupled to the upper end of the reciprocator 40 in such a manner as to receive a spring force upward from the compression coil spring 64. The slider 62 is fixed to the lower surface of the holding table 58. The holding table 58 has two protrusions 59 protruding from the upper surface fitted into the lower end of the reciprocator 40 and coupled to the shuttle 56, and receives the spring force of the compression coil spring 64 to move downward. To generate a contact pressure between the slider 62 and the stator 61. According to this configuration, when the outer cutter 21 is strongly pressed against the skin during shaving, the inner cutter 22 is pushed down together with the outer cutter 21, and the coil panel 64 is further compressed accordingly. The contact pressure with the stator 61 is too high. In this case, the relationship between the contact pressure between the slider 62 and the stator 61 and the driving force of the slider 62 is within the range of the pressing force of the outer blade against the skin during normal use. If the contact pressure between the stator 61 and the slider 61 is increased, the driving force of the slider is set to be large, so that a smooth shaving can be performed.

FIGS. 7 and 8 show another modification.In order to generate a contact pressure between the slider 62 and the stator 61, the spring 64 biases the stator 61 toward the slider 62. ing. The stator 61 is fixed to a float 54 which is movable with respect to a base 53 of a frame 52, and a panel 64 disposed between the base 53 and the float 54 makes contact between the stator 61 and the slider 62. Is gaining pressure. The slider 62 is fixed to the lower surface of the shuttle 56, and reciprocating motion of the slider 62 is directly transmitted to the shuttle 56, and reciprocates the inner blade via the reciprocator 40.

9 to 11 show a second embodiment in which the personal electric beauty appliance of the present invention is applied to an electric toothbrush to reciprocally drive a toothbrush 120 which is a beauty treatment element. The electric toothbrush consists of an elongated cylindrical housing 100 and a toothbrush 120 that can be attached to and detached from the reciprocator 140 that projects from the housing 100. Then, a surface acoustic wave linear motor 50 similar to the above embodiment is built in the housing 100 together with a rechargeable battery 15 and a substrate 112 constituting a control circuit for applying a high-frequency voltage to the motor. The motor 50 is accommodated in the housing with the linear guide 55 aligned with the axial direction of the housing 100, and one end of the reciprocator 140 is fixed to the shuttle 56 so as to be parallel to the linear guide 55. The motor 50 is fixed to the housing 100 by the base 53 of the frame 52, and the slider 62 is urged toward the stator 61 by the spring 57 as shown in FIG.

FIG. 12 shows a modification of the above-described electric toothbrush. As described with reference to FIGS. 7 and 8, a motor 50 for urging the stator 61 with the panel 64 to the slider 62 is used. The reciprocator 40 is supported by a shuttle 56 that directly supports 62.

In the illustrated embodiment, an example is shown in which the barber / beauty appliance of the present invention is applied to an electric razor or an electric toothbrush, but the present invention is not limited to this. The present invention can be applied to a barber / beauty apparatus that achieves a desired barber / beauty treatment. For example, in an electric hair clipper having a fixed blade and a movable blade, the above-described surface acoustic wave linear motor is used to drive a reciprocator that holds the movable blade, which is a hairdressing and beauty element.

Further, in the illustrated embodiment, an example is shown in which a coil spring is used as an elastic body for applying a contact pressure between the slider 62 and the stator 61, but the present invention is not necessarily limited to this. It is possible to use other spring-to-elastic materials that fly.

Claims

The scope of the claims

1. With the housing gripped by the user's hand

A hairdressing element held by the housing;

A reciprocator supported by the housing for reciprocating the barber / cosmetic element to perform a barber / cosmetic process; and a motor housed in the housing to operate the reciprocator.

The motor is a surface acoustic wave linear motor, and the linear motor includes a stator and a slider movable on the surface of the stator and coupled to the reciprocator. The linear motor is provided on one of the stator and the slider. A personal electric beauty appliance, wherein a transducer electrode receives an AC voltage and reciprocates a slider on a surface of a stator.

2. In the personal electric hairdressing and beauty apparatus according to claim 1,

The barber / beauty appliance is an electric razor, and the barber / beauty element is an inner blade that slides on the outer blade of the razor.

3. In the personal electric hairdressing and beauty apparatus according to claim 1,

The barber / beauty appliance is an electric clipper, and the barber / cosmetic element is a movable blade that slides on a fixed blade of the clipper.

4. In the personal electric hairdressing and beauty apparatus according to claim 1,

The barber / beauty appliance is an electric toothbrush, and the barber / cosmetic element is a toothbrush.

5. The personal electric hairdressing and beauty appliance according to any one of claims 2 to 4,

A transducer electrode was provided on the stator.

6. The personal electric beauty appliance according to any one of claims 2 to 4, wherein the slider is provided with a transducer electrode. F. The personal electric hairdressing and beauty device according to any one of claims 2 to 4,

An elastic body is provided for urging the slider toward the stator to apply a contact pressure between the two.

8. In the personal electric hairdressing and beauty apparatus according to claim 2,

An elastic body is provided for urging the slider toward the stator to apply a contact pressure therebetween, and the elastic body is a compression spring interposed between the slider and the inner blade.

9. The personal electric hairdressing and beauty appliance according to any one of claims 2 to 4,

The motor includes a frame for fixedly supporting the stator, a shuttle is slidably supported on a linear guide formed on the frame, and the shuttle holds the reciprocator and the slider.

The shuttle and the slider were connected by an elastic body, and the slider was urged to the surface of the stator.

10.In the personal electric hairdressing and beauty apparatus according to claim 2,

The elastic body mounted on the reciprocator was compressed between the inner blade and the slider, and urged the inner blade and the slider toward the outer blade and the stator, respectively.

11.The personal electric beauty appliance according to any one of claims 2 to 4, The motor includes a frame having a base and a linear guide. The reciprocator is formed on a shuttle slidably supported by the linear guide, and the slider is fixed to the shuttle. Supported on a base so as to be movable along the direction perpendicular to the direction,

The surface of the stator is urged against and comes into contact with the slider by an elastic body disposed between the base and the stator.