JP4280506B2 - Ultrasonic ion toothbrush - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a toothbrush, and more particularly to an ultrasonic ion toothbrush that can easily remove dental plaque soft from teeth by using a combination of cavitation caused by ultrasonic energy and an ionic effect.
[0002]
[Prior art]
Conventionally, as a method for removing dirt on teeth, a method of brushing using a toothbrush in which brush hairs are planted at the tip of a handle is used.
This mechanically polishes the surface with the bristles in direct contact with the teeth.
However, since the sufficient cleaning effect cannot be obtained only by the frictional force of the brush bristles of such a toothbrush, for example, an attempt is made to improve the cleaning effect by using a dentifrice supplementarily.
[0003]
However, this cleaning effect is insufficient to remove the plaque adhering to the tooth surface, so that the plaque remains and is easily calcified to become calculus.
Incidentally, plaque is a deposit of deposits adhered to the tooth surface, and various bacteria such as streptococci and filamentous fungi form and adhere to plaque bacteria.
This plaque adheres to the tooth surface by the electrical cross-linking force of ions and the chain force of bacterial cilia and insoluble glucan of plaque bacteria.
[0004]
Accordingly, various types of toothbrush devices have been developed for removing plaque and tartar from teeth.
One of them uses an ionic action.
For example, the ion toothbrush disclosed in Japanese Patent Application Laid-Open No. 2001-309820 relaxes the cross-linking force between the tooth surface and plaque caused by calcium ions in saliva by passing an electric current between the tooth and the toothbrush, thereby making the plaque more effective. To improve the tooth brushing effect (see Patent Document 1).
[0005]
In this ion toothbrush, since the ion action at the time of brushing the hair is used, the light emitting part provided at the handle end blinks to inform the user that the hair brushing conditions are ready. It is like that.
The brushing of the hair is to brush at a pressure of about 100 g with a brush tip applied at right angles to the tooth surface to be polished.
[0006]
To be sure, the user can maintain the brushing of the hair by gazing at the light emitting part that is initially provided at the end of the handle because of its unusualness. Gaze at the light emitting part provided in the part).
For this reason, in many cases, the toothbrush pressure becomes high, and the tip of the hair opens rather than the tooth, so that plaque cannot be removed.
[0007]
By the way, there is JP 2002-34663 A as another example using the ionic effect, and there is a proposal to use it in the brush hair of a toothbrush by paying attention to the negative ion generation effect of tourmaline. (See Patent Document 2).
Certainly, the generation of negative ions is recognized depending on the temperature in the oral cavity, but it is not yet possible to expect sufficient generation.
[0008]
On the other hand, toothbrushes using ultrasonic waves have been developed. For example, an ultrasonic toothbrush disclosed in Japanese Patent Laid-Open No. 63-109807 is a brush hair in which ultrasonic vibration from a vibrator provided in a handle is implanted in a brush portion by a metal bar having ultrasonic conductivity. (See Patent Document 3).
[0009]
The ultrasonic vibration transmitted to the brush bristles causes cavitation in the saliva and liquefied dentifrice in the oral cavity, destroying bacterial cilia and insoluble glucans of plaque bacteria adhering to the tooth surface, and chaining them. Also remove plaque by unraveling.
Therefore, in addition to the effect of brushing only the hair, it is extremely efficient for generating cavitation on the tooth surface and removing plaque.
[0010]
The piezoelectric ceramic vibrator of this toothbrush includes ultrasonic waves so that the neck portion (that is, a portion having a hollow structure in which the handle body and the brush portion are continuously provided) and the handle portion are threaded through the neck portion. A conductive waveguide metal rod protrudes.
A wave guide metal socket connected to the tip of the wave guide metal rod so that ultrasonic waves can be conducted when the neck portion and the handle portion are screwed together is embedded in the head portion of the neck portion.
[0011]
Furthermore, an ultrasonic conductive waveguide metal plate is embedded in the head body so as to extend to the waveguide metal socket, and the root of the brush is fixed to the waveguide metal plate so that the ultrasonic wave can be conducted. Or it is connected and the upper part protrudes outside from the head body surface.
Because of this structure, ultrasonic vibrations are transmitted from the ultrasonic transducer to the root of the brush through the waveguide metal rod, the waveguide metal socket, and the waveguide metal plate. There is a defect that frictional heat is generated in (that is, a defect that ultrasonic vibration energy is diffused into frictional heat energy), which is not always sufficient when viewed from the transmission efficiency of ultrasonic vibration.
[0012]
In this toothbrush, water, glycerin and other ultrasonically permeable media are interposed as necessary in the connection part and the fixed part where voids can occur in the ultrasonic conduction path, but the transmission efficiency of ultrasonic vibration is does not change.
In addition, since the neck portion and the handle portion are screwed together, when the neck portion is rotated during attachment, wear tends to occur between the waveguide metal rod and the waveguide metal socket.
If the cervical part is replaced many times, the waveguide metal rod of the handle part is worn out, and thereafter, the transmission of ultrasonic vibration to the cervical part becomes worse.
[0013]
[Patent Document 1]
JP 2001-309820 A [Patent Document 2]
JP 2002-34663 A [Patent Document 3]
Japanese Patent Laid-Open No. 63-109807
[Problems to be solved by the invention]
The present invention has been made in order to overcome the above-mentioned problems against the background of such a situation.
That is, an object of the present invention is to provide an ultrasonic ion toothbrush that can accurately remove plaque by both negative ion action and efficient cavitation action by ultrasonic vibration.
Moreover, it is providing the ultrasonic ion toothbrush excellent in the transmission efficiency of ultrasonic vibration.
[0015]
[Means for Solving the Problems]
Thus, as a result of intensive research on the background of such problems, the present inventor has sufficiently relaxed the bridge bonding between the tooth surface and the plaque due to the ionic effect, and is sufficient to remove plaque on the tooth surface. The present inventors have found that the generation of cavitation can activate the release of the cross-linking bond and remove plaque more effectively, and the present invention has been completed based on this finding.
[0016]
That is, the present invention includes (1) an ultrasonic signal generating means, an ultrasonic vibrator that generates an ultrasonic wave by a signal from the ultrasonic signal generating means, and a horn that transmits vibrations from the ultrasonic vibrator. A main body portion, a brush head portion in which brush hairs are planted, and a brush portion including a vibration receiving plate that receives vibration from the horn in a state of being integrally fixed to the brush head portion. An ultrasonic ion toothbrush in which the part and the brush part are detachably attached exists.
[0017]
And (2), a brush part exists in the ultrasonic ion toothbrush attached to the main-body part at two places with the front-end | tip part of a horn, and the head of a main-body part so that attachment or detachment is possible.
[0018]
And (3), the horn has a reduction part, and this reduction part is attached by pressure contact between the rib-like protrusion formed on the brush head part and the vibration receiving plate. It exists in a toothbrush.
[0019]
Further, (4) an ultrasonic ion toothbrush in which a tapered portion having an inclination is formed at the tip of the reduced portion of the horn, and the horn is guided by the tapered portion.
[0020]
(5) The reduced portion of the horn is an ultrasonic ion toothbrush having a semicircular cross section and a notch groove formed in the arc portion.
[0021]
And (6), the brush part is hollow and has a leg part extending downwardly from the brush head part, and the leg part has a pair of tongue pieces at the end part. The pair of tongue pieces resides in an ultrasonic ion toothbrush that is press-fitted and attached to a pair of receiving grooves formed on the head of the main body.
[0022]
And (7), a vibration receiving board exists in the ultrasonic ion toothbrush in which at least one part is exposed outside from a brush head part.
[0023]
And (8) exists in the ultrasonic ion toothbrush in which the bristle is planted on the vibration receiving plate.
[0024]
(9) In the ultrasonic ion toothbrush, the horn and the vibration receiving plate are conductive, and the electrode portion is electrically connected to the power supply of the vibration receiving plate and the ultrasonic signal generating means on the outer surface of the main body.
[0025]
In addition, (10) the ultrasonic ion generating brush is a power source for the ultrasonic signal generating means, which is a rechargeable power source.
[0026]
As long as this invention meets this purpose, it is naturally possible to employ a configuration in which two or more selected from the above 1 to 10 are combined.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The ultrasonic ion toothbrush of the present invention has a function of more effectively removing plaque by loosening the cross-linking bond between the tooth surface and plaque caused by calcium ions in saliva by passing an electric current between the tooth and the toothbrush, That is, it has a function as an ion toothbrush.
The ultrasonic energy generates cavitation sufficient to remove plaque on the surface of the teeth and functions as an ultrasonic toothbrush that removes plaque more effectively. It exhibits a highly synergistic toothbrushing effect.
[0028]
FIG. 1 is an external view showing an ultrasonic ion toothbrush according to an embodiment of the present invention.
Moreover, FIG. 2 is sectional drawing which shows the first half part of an ultrasonic ion toothbrush, (A) is a plane sectional view, (B) is a side sectional view.
This toothbrush includes a main body portion 1 provided with ultrasonic vibration generating means and a horn 3 for transmitting the vibration, a vibration receiving plate 4 for receiving vibration from the horn 3, and a brush head portion 2A in which brush hairs 5 are planted. The brush part 2 provided with.
[0029]
The ultrasonic vibration generating means includes an ultrasonic signal generating means 7 and an ultrasonic vibrator 8 that generates an ultrasonic wave by a signal from the ultrasonic signal generating means 7.
The ultrasonic signal generating means 7 includes a control unit 13 for controlling the whole, an ultrasonic transmitter 14 for generating an ultrasonic signal, a timer unit 15 for controlling an ultrasonic transmission time, and a current for generating ions. An ionic current control unit 20 and a power supply unit 16 are provided (see FIG. 3).
[0030]
The power supply unit 16 includes a rechargeable battery 17, a charging terminal 18, and a charging control unit 19 that controls charging of the rechargeable battery 17 from the charging terminal 18 during charging.
The control unit 13 controls the state of the ultrasonic ion toothbrush, and signals from the power switch 10 (see FIG. 1), the timer unit 15, and the power supply unit 16 provided on the outside of the main body unit 1 are received. Have been entered.
[0031]
As for the power source, the control unit 13 receives a signal from the power switch 10 provided outside the main body unit 1 and turns on / off the power based on the signal.
Further, the power switch 10 is provided with a self-illuminating LED (not shown), which emits light when the power is turned on and turns off when the power is turned off.
Further, when the rechargeable battery has insufficient electromotive force, the LED turns off the light emission and informs that charging is necessary.
[0032]
Conversely, when the control unit 13 detects a signal indicating that the charging from the power supply unit 16 is completed, the LED blinks green to inform the end of the charging.
The rechargeable battery 17 of the power supply unit 16 is charged via the charging terminal 18 when the main unit 1 is mounted on a charging stand (not shown).
The charging control is performed by the charging control unit 19, and this signal is output to the control unit 13 when the charging is completed.
[0033]
Now, the operation of each unit will be described based on the actual use procedure.
First, when the control unit 13 detects a power ON signal from the power switch 10, the control unit 13 outputs an activation signal to the timer unit 15, the ultrasonic transmitter 14, and the ion current control unit 20.
The timer unit 15 detecting this signal starts measurement for a predetermined time (for example, 3 minutes), and outputs an end signal to the control unit 13 after the measurement is completed.
The ultrasonic transducer 8 is applied with a drive current transmitted at an ultrasonic frequency (for example, 2 million hertz) by the ultrasonic transmitter 14 that simultaneously detects the activation signal.
[0034]
Similarly, the ion current control unit 20 that has detected the activation signal includes a positive electrode 11 that is an electrode unit provided on the outer surface of the main body, and a vibration receiving plate 4 (a negative electrode) that is partially exposed from the brush head unit 2A. ), And as a result, ions are generated on the tooth surface.
That is, the vibration receiving plate 4, the horn 3, the ion current control unit 20, the positive electrode 11 provided on the outer surface of the main body, and the power supply unit 16 are electrically connected to each other through a human body (for example, a human hand). Then, ions are generated.
However, since the current at the time of ion generation varies depending on the contact resistance with the tooth surface and the hand, it is controlled by the ion current control unit 20.
[0035]
Although the function as an ion toothbrush will be described later, the operation as an ultrasonic toothbrush will be described in more detail here.
The ultrasonic transducer 8 starts to vibrate at a predetermined ultrasonic frequency by the drive current transmitted from the ultrasonic transmitter 14.
[0036]
As will be described later, this vibration is transmitted to the horn 3 attached integrally with the ultrasonic transducer 8, and then transmitted to the vibration receiving plate 4 integrated with the brush head portion 2A.
Here, the structural features of the ultrasonic ion toothbrush will be described. The horn 3 extends upright from the ultrasonic vibrator 8 and protrudes outward from the head 9 of the main body 1.
[0037]
FIG. 4 shows the horn in a state of protruding from the head portion 9 of the main body 1 with a partial break, (A) is a partially broken plan view, and (B) is a partially broken side view.
The horn 3 is reduced in a certain range from the tip to become a reduced portion 3A (see FIG. 2), and its cross section is formed in a semicircular shape.
In addition, three cutout grooves 3A2 such as a U-groove or a V-groove are formed in the arc-shaped portion of the reduced portion 3A, and it has been experimentally confirmed that the ultrasonic wave transmission efficiency is extremely improved by the groove.
[0038]
By the way, ultrasonic vibration must be efficiently and accurately transmitted from the main body 1 to the brush 2.
Therefore, the brush part 2 is detachably attached to the main body part 1 while being supported at two places, the first support place and the second support place.
The first support location is between the vicinity of the center of the head 9 of the main body 1 and the lower end of the brush 2.
[0039]
FIG. 5 is a view before press-fitting showing the attachment relationship between the brush portion 2 and the main body portion 1 at the first support location, (A) is a plan view, and (B) is a side view.
6A and 6B are views after press-fitting showing the attachment relationship between the brush portion 2 and the main body portion 1 at the first support location, where FIG. 6A is a plan view and FIG. 6B is a side view.
The brush portion 2 is hollow, and includes a brush head portion 2A that is a portion having the brush bristles 5 and a leg portion 2B that extends downwardly from the brush head portion 2A.
[0040]
And this leg part 2B is equipped with a pair of tongue pieces T in the edge part, and this tongue piece T is externally press-fitted into the head 9 of the main body part 1.
The head 9 is formed to extend from the main body 1 so as to narrow toward the end, like an elephant nose, and a pair for receiving a pair of tongues T of the leg 2B near the center outer periphery. The receiving groove G is formed.
[0041]
When the head portion 9 of the main body portion 1 is inserted into the brush portion 2, the tongue piece T of the leg portion 2 </ b> B of the brush portion 2 is fitted into the receiving groove G from the outside and is attached in a press-fitted state.
In addition, since the tongue piece T and the receiving groove G are engaged with each other, loosening such as rotation between the two pieces does not occur at all.
Further, when the head 9 is inserted into the brush portion 2, the tapered tongue T is naturally guided into the receiving groove G of the head 9, so that positioning is easy.
[0042]
On the other hand, the second support location is between the vibration receiving plate 4 that is integrally embedded in the brush head portion 2A of the brush portion 2 and the front portion of the horn 3 that protrudes from the ultrasonic transducer 8. It is.
In addition, the ultrasonic transducer | vibrator 8 is disk shape, and is hold | maintained in several places with the several support piece 91 rising from the head 9 of the main-body part.
In a state where the horn 3 of the main body 1 is inserted into the brush head part 2A of the brush part 2, the horn 3 must be in strong contact with the vibration receiving plate 4 embedded in the brush head part 2A.
[0043]
As the horn 3 is in strong contact with the vibration receiving plate 4 in this way, ultrasonic vibration is efficiently transmitted from the horn 3 to the vibration receiving plate 4.
For this purpose, in the present invention, the rib-like protrusions P are provided on the inner wall of the brush head portion opposite to the position where the vibration receiving plate 4 is embedded.
[0044]
The front end of the horn 3 is press-fitted and supported between the rib-shaped protrusion P and the vibration receiving plate 4.
Since the horn 3 is in contact with the rib-like protrusion P at the arc surface formed in the reduced portion 3A, the contact area between the two is extremely limited.
[0045]
7 and 8 show the relationship between the horn 3 and the vibration receiving plate 4 at the second support location.
FIG. 7 is a view showing a state before the horn 3 is press-fitted between the vibration receiving plate 4 and the rib-like protrusion P, where (A) shows a longitudinal section and (B) shows a BB section thereof.
[0046]
FIG. 8 is a view showing a state after the horn 3 is press-fitted between the vibration receiving plate 4 and the rib-like protrusion P, where (A) shows a longitudinal section and (B) shows a BB section thereof.
Since the tip of the horn 3 is a tapered portion 3A1 having an inclination, this serves as a guide when the horn 3 rides on the rib-like protrusion P.
[0047]
Here, from the viewpoint of transmission of ultrasonic vibration, since the horn 3 is in pressure contact with the rib-shaped protrusion P, ultrasonic vibration can be transmitted, but the brush portion 2 is connected to the main body through the long leg portion 2B. Since it is supported at the part 1 and the second support location, vibration transmission is almost interrupted at the second support location.
[0048]
As described above, the main body portion 1 and the brush portion 2 are supported by two locations, the first support location and the second support location, and are not in contact with other portions.
Moreover, at the second support location, the horn 3 is only slightly in contact with the rib-like protrusion P and the vibration receiving plate 4 at the tip.
[0049]
Incidentally, the base of the horn 3 is fixed to the ultrasonic vibrator 8, and other than that, the horn 3 is not in contact with the wall of the main body 1.
However, in the part where the horn 3 protrudes from the head end of the main body 1, the liquid is sealed by the flexible packing 6 so that the liquid does not flow back into the main body through the gap in the brush head (FIG. 4). reference).
[0050]
For this reason, as far as the horn 3 is concerned, it is supported only at one location of the second support location, and the contact range with other portions is extremely small.
As a result, ultrasonic vibration is transmitted from the horn 3 to the vibration receiving plate 4 embedded in the brush head portion 2A accurately and efficiently, and it is avoided that the vibration energy is diffused and attenuated.
[0051]
The first support location plays a role of integrating the brush part 2 and the main body 1 so as not to be detached, and the second support location is the same role that does not come off, and the ultrasonic vibration is efficiently applied to the vibration receiving plate 4. It plays a role to communicate well.
Further, in the ultrasonic vibration transmission method, since the ultrasonic vibrator 8 and the horn 3 which are vibration sources are integrated by, for example, soldering or the like, the ultrasonic vibration transmission method passes through one junction point from the horn 3 to the vibration receiving plate 4. It will be understood that the transmission efficiency of ultrasonic vibration is improved as compared with the conventional ultrasonic toothbrush as described above.
[0052]
The vibration receiving plate 4 of the brush portion 2 is embedded in the brush head portion 2A (usually formed of plastic) by integral insert molding. Needless to say, the integration of the two is not assured.
[0053]
Since at least a part of the vibration receiving plate 4 is exposed to the outside from the brush head portion 2A, the ultrasonic vibration is accurately transmitted directly to saliva or liquefied dentifrice in the oral cavity to generate cavitation.
At the same time, cavitation is caused, and as a result, the bristle 5 is vibrated finely, and a frictional action due to the fine vibration is generated between the bristle 5 in contact with the tooth and the tooth.
As a result, the plaque adhering to the tooth surface is easily removed due to the weakening of the binding force to the tooth surface due to this cavitation effect and frictional action.
[0054]
Now, the above-mentioned plaque removal operation by the cavitation effect is repeated,
Then, after a predetermined time, an end signal from the timer unit 15 is input to the control unit 13 when a predetermined time has elapsed since the power was turned on.
The ultrasonic transmitter 14 that generates the drive current to the ultrasonic transducer 8 is stopped from generating the drive current by the transmission stop signal from the control unit 13 that has detected the end signal.
As a result, the vibration of the ultrasonic transducer 8 is stopped.
[0055]
Next, an ion generation function as an ion toothbrush will be described.
As shown in FIG. 1, as an ion toothbrush, it is electrically connected through the mouth between the main-body part 1 grasped by hand and the replaceable brush part 2. As shown in FIG.
As described above, the positive electrode 11 that is an electrode portion (for example, a metal plate) that comes into contact with the hand is provided on the portion of the main body 1 that is held by the hand.
In addition, it is preferable to provide the plus electrode 11 in a direction perpendicular to the direction in which the brush hair is implanted, from the viewpoint of whether or not the plus electrode 11 is easily contacted with the hand.
[0056]
The plus electrode 11 serves as one electrode for passing a weak intraoral current, which will be described later, and is connected to a power source via an ion current control unit 20 constituting the ultrasonic signal generating means 7 disposed in the main body 1. Conducted to part 16.
The conductive vibration receiving plate 4 (for example, duralumin) which is a negative electrode is electrically connected to the power supply unit 16 via the conductive horn 3 (for example, duralumin) of the main body 1 and the ion current control unit 20.
[0057]
As described above, a part of the vibration receiving plate 4 is exposed to the outside from the brush head portion 2A in which a large number of brush hairs 5 are implanted.
By contacting saliva or a liquefied dentifrice with the exposed vibration receiving plate 4, the positive electrode of the power source (via the ionic current control unit 20), the positive electrode 11 (see FIG. 1), the hand, the gums (at least teeth) The closed circuit of the negative pole of the vibration receiving plate 4, the horn 3, and the power source (via the ion current control unit 20) is formed, and the mouth current flows as negative ions (see FIG. 9).
[0058]
This intraoral current loosens the cross-linking bond with the tooth surface of the plaque that tends to ionize and makes it easy to leave, but since the cavitation is generated by the ultrasonic vibration described above, the cross-linking bond becomes easier to break, and both actions This produces a synergistic effect.
Therefore, the effect of removing plaque caused by negative ions is more reliably exhibited.
[0059]
Note that, for example, tourmaline is blended in the brush bristles, so that pressure is applied to the bristles 5 through the body of the brush head portion 2A from the ultrasonic vibration of the vibration receiving plate 4, thereby efficiently. Negative ions are generated.
Furthermore, negative ions are also generated when a shock wave caused by cavitation is applied to the bristle 5.
[0060]
The present invention is not limited to the above-described embodiment, and various modifications are possible as long as the purpose is met.
For example, although an ultrasonic ion toothbrush has two actions of ions and ultrasonic waves, it is naturally possible to enhance the feeling of use by applying mechanical vibration to the main body.
[0061]
Further, the ultrasonic signal generating means of the present invention is not limited to the one shown in FIG. 3. For example, the power supply of the power supply unit may be a primary battery, a secondary battery, or an external power supply.
Further, the emission color and the emission method of the LED are not limited to the present embodiment.
In addition, the charging terminal can naturally be one using an induced electromotive force instead of the charging coil.
[0062]
【The invention's effect】
As described above, the ultrasonic ion toothbrush of the present invention ensures plaque by the effect of loosening the cross-linking bond with the tooth surface of the plaque due to negative ions, and the cavitation effect by ultrasonic vibration. Can be removed.
Moreover, the cavitation effect makes it easier to break the cross-linking bond with the tooth surface of the plaque, increasing the ion effect.
[0063]
In addition, the ultrasonic ion toothbrush of the present invention has a good transmission efficiency of ultrasonic vibrations and effectively exhibits a cavitation action.
Due to these synergistic effects, plaque in the mouth is easily and accurately removed.
[Brief description of the drawings]
FIG. 1 is an external view showing an ultrasonic ion toothbrush according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a front half portion of an ultrasonic ion toothbrush, wherein (A) is a plan cross-sectional view and (B) is a side cross-sectional view.
FIG. 3 is a block diagram showing ultrasonic signal generating means.
FIG. 4 is a partially broken plan view of the horn protruding from the head of the main body, (A) is a partially broken plan view, and (B) is a partially broken side view.
FIGS. 5A and 5B are views before press-fitting showing the attachment relationship between the brush portion and the main body at the first support location, where FIG. 5A is a plan view and FIG. 5B is a side view.
FIGS. 6A and 6B are views after press-fitting showing the attachment relationship between the brush portion and the main body at the first support location, where FIG. 6A is a plan view and FIG. 6B is a side view.
FIG. 7 is a view showing a state before a horn is press-fitted between a vibration receiving plate and a rib-like protrusion, wherein (A) shows a longitudinal section and (B) shows a BB section thereof.
FIG. 8 is a view showing a state after a horn is press-fitted between a vibration receiving plate and a rib-like protrusion, wherein (A) shows a longitudinal section and (B) shows a BB section thereof.
FIG. 9 is a diagram for explaining ion action;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Main-body part 2 ... Brush part 2A ... Brush head part 2B ... Leg part 3 ... Horn 3A ... Reduction | restoration part 3A1 ... Tapered part 3A2 ... Notch groove 4 ... Damping plate 5 ... Brush hair 6 ... Flexible packing 7 ... Super Sound wave signal generating means 8 ... ultrasonic transducer 9 ... head 91 ... support piece 10 ... power switch 11 ... positive electrode (electrode part)
DESCRIPTION OF SYMBOLS 13 ... Control part 14 ... Ultrasonic transmitter 15 ... Timer part 16 ... Power supply part 17 ... Rechargeable battery 18 ... Charge terminal 19 ... Charge control part 20 ... Ion current control part G ... Receptacle groove P ... Rib-like protrusion T ... Tongue piece

Claims (10)

An ultrasonic signal generating means, an ultrasonic vibrator for generating ultrasonic waves by a signal from the ultrasonic signal generating means, a main body having a horn for transmitting vibrations from the ultrasonic vibrator, and a bristle A brush portion having a hair transplanted, a brush portion having a vibration receiving plate that receives vibration from the horn in a state of being integrally fixed to the brush head portion, and an ion generating means for generating ions, a main body portion and a brush portion; The ultrasonic ion toothbrush characterized by being attached detachably. The brush portion is hollow, and is supported and detachably attached to the main body portion at two locations of the tip portion of the horn and the head portion of the main body portion. Ultrasonic ion toothbrush. The horn has a reduced portion, and the reduced portion is attached by being pressed between a rib-like protrusion formed on an inner wall portion of the brush head and a vibration receiving plate. The described ultrasonic ion toothbrush. 4. A tapered portion having an inclination is formed at the tip of the reduced portion of the horn, and the horn is easily guided on the rib-like protrusion by the tapered portion. Ultrasonic ion toothbrush. 4. The ultrasonic ion toothbrush according to claim 3, wherein the reduced portion of the horn has a semicircular cross section, and a notch is formed in the arc portion. The brush portion is hollow, and has a leg portion extending downwardly from the brush head portion, and the leg portion includes a pair of tongue pieces at the end portions. 2. The ultrasonic ion toothbrush according to claim 1, wherein the ultrasonic ion toothbrush is attached by being press-fitted from the outside into a pair of receiving grooves formed in the head of the main body. The ultrasonic ion toothbrush according to claim 1, wherein at least a part of the vibration receiving plate is exposed to the outside from the brush head portion. 8. The ultrasonic ion toothbrush according to claim 7, wherein brush hairs are also planted on the vibration receiving plate. The horn and the vibration receiving plate are conductive, and an electrode portion is provided on an outer surface of the main body, and the electrode portion is electrically connected to a power source of the vibration receiving plate and the ultrasonic signal generating means. Ultrasonic ion toothbrush. 2. The ultrasonic ion toothbrush according to claim 1, wherein the power source of the ultrasonic signal generating means is a rechargeable power source.

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