JP2004041684A - Ultrasonic ion toothbrush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic ion toothbrush which can adequately remove plaque by both anionic action and ultrasonic cavitation action and can efficiently transmit ultrasonic vibration. <P>SOLUTION: This toothbrush has a main body part 1 with an ultrasonic signal generating means 7, an ultrasonic vibrator 8 to generate ultrasonic by signals from the ultrasonic signal generating means 7, and a horn 3 to transmit vibration from the ultrasonic vibrator 8, and a brush part 2 with a brush head part 2A implanted with bristles 5, and a vibration receiving plate 4 to receive vibration from the horn 3 while the plate 4 is integrally fixed on the brush head part 2A, and an ion generating means to generate ions. The main part 1 and the brush part 2 are detachably attached. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a toothbrush, and more particularly, to an ultrasonic ion toothbrush capable of easily removing soft plaque from teeth by using cavitation by ultrasonic energy and an ion effect in combination.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a method for removing tooth stains, a method of brushing using a toothbrush in which brush bristles are implanted at the tip of a handle has been used.
This is to mechanically polish the surface with the brush bristles in direct contact with the teeth.
However, a sufficient cleaning effect cannot be obtained only by the frictional force of the brush bristles of the toothbrush. Therefore, for example, an attempt is made to improve the cleaning effect by using a toothpaste in an auxiliary manner.
[0003]
However, this cleaning effect is insufficient to remove plaque adhering to the surface of the tooth, so that the plaque remains and tends to be calcified to tartar.
By the way, plaque is an accumulation of deposits adhered to the tooth surface, and various bacteria such as streptococci and filamentous fungi form and adhere to plaque bacteria. This plaque is attached to the tooth surface by the electric cross-linking force of ions and the chain force of bacterial plaque and insoluble glucan of plaque bacteria.
[0004]
Therefore, various types of toothbrushes for removing plaque and tartar from teeth have been developed.
As one of them, there is one utilizing an ionic action.
For example, the ion toothbrush disclosed in Japanese Patent Application Laid-Open No. 2001-309820 reduces the cross-linking force between the tooth surface and plaque due to calcium ions and the like in saliva by flowing an electric current between the tooth and the toothbrush, thereby making plaque more effective. To improve the brushing effect (see Patent Document 1).
[0005]
In this ion toothbrush, the light emitting portion provided at the end of the handle blinks to notify the user when the conditions for brushing the hair are ready because the ion action at the time of brushing is used. It has become.
In addition, this brushing is to brush the brush at a right angle to the tooth surface to be brushed and to brush at a pressure of about 100 g.
[0006]
Certainly, the user can maintain the tip of the brush by looking at the light emitting portion provided at the end of the handle due to the unusualness, but it is necessary to maintain the tip of the hair while accustomed (ie, to handle the tip of the handle). Gaze at the light emitting unit provided in the unit).
For this reason, in many cases, the toothbrush pressure becomes high, and the bristle tip rather opens to the tooth, and plaque cannot be removed.
[0007]
Incidentally, Japanese Unexamined Patent Application Publication No. 2002-34663 is another example of utilizing the ion effect. There is a proposal that pays attention to the generation effect of tourmaline negative ions, and uses this in the brush bristles of a toothbrush. (See Patent Document 2).
Certainly, generation of negative ions is recognized to a considerable extent depending on the temperature in the oral cavity, but it is not yet expected to generate sufficient ions.
[0008]
For this reason, on the other hand, a toothbrush using ultrasonic waves has been developed. For example, an ultrasonic toothbrush disclosed in Japanese Patent Application Laid-Open No. 63-109807 discloses a brush bristle in which ultrasonic vibrations from a vibrator provided in a handle are implanted in a brush portion by a metal rod having ultrasonic conductivity. (See Patent Document 3).
[0009]
The ultrasonic vibrations transmitted to the brush bristles cause cavitation in saliva and liquefied dentifrice in the oral cavity, destroying the bacterial cilium and insoluble glucan of plaque bacteria attached to the tooth surface, and chaining. You can also remove plaque by solving
Therefore, in addition to the effect of brush tip alone, cavitation is generated on the tooth surface to remove plaque, which is extremely efficient.
[0010]
The piezoelectric ceramic vibrator of this toothbrush has an ultrasonic wave so as to penetrate through the neck when screwing the neck (that is, a portion having a hollow structure connecting the handle and the brush) to the handle. A conductive waveguide metal rod protrudes.
A waveguide metal socket that is connected to the tip of the waveguide metal rod so that ultrasonic waves can be transmitted when the neck and the handle are screwed is embedded in the head of the neck.
[0011]
In addition, an ultrasonic conductive waveguide metal plate is embedded in the head so as to extend to the waveguide metal socket, and the root of the brush is fixed to the waveguide metal plate so that ultrasonic waves can be transmitted. Alternatively, it is connected and its upper part is protruded from the head surface to the outside.
Because of this structure, the ultrasonic vibration is transmitted from the ultrasonic transducer through the waveguide metal rod, the waveguide metal socket, and the waveguide metal plate to the root of the brush. However, there is a drawback that frictional heat is generated at (2) (that is, a drawback that ultrasonic vibration energy is diffused into frictional heat energy), which is not always sufficient from the viewpoint of ultrasonic vibration transmission efficiency.
[0012]
In this toothbrush, water, glycerin and other ultrasonically permeable media are interposed, if necessary, at connection parts and fixed parts where air gaps can occur in the ultrasonic conduction path, but the transmission efficiency of ultrasonic vibration is does not change.
In addition, since the neck and the handle are screwed together, when the neck is rotated during attachment, abrasion is likely to occur between the waveguide metal rod and the waveguide metal socket.
If the cervix is replaced many times, the waveguide metal rods of the stalk are worn out, and the transmission of ultrasonic vibrations to the cervix becomes worse thereafter.
[0013]
[Patent Document 1]
JP 2001-309820 A [Patent Document 2]
Japanese Patent Application Laid-Open No. 2002-34663 [Patent Document 3]
JP-A-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 the actual situation.
That is, an object of the present invention is to provide an ultrasonic ion toothbrush capable of accurately removing plaque by both the negative ion operation and efficient cavitation by ultrasonic vibration.
Another object of the present invention is to provide an ultrasonic ion toothbrush excellent in transmission efficiency of ultrasonic vibration.
[0015]
[Means for Solving the Problems]
Thus, the present inventor has conducted intensive studies on such a background of the problem, and as a result, it has been found that the cross-linking between the tooth surface and the plaque due to the ionic effect is loosened, and that the plaque is sufficiently removed on the tooth surface. The present inventors have found that the occurrence of cross-linkage can be more activated by generating cavitation, and that plaque can be more effectively removed, and the present invention has been completed based on this finding.
[0016]
That is, the present invention provides (1) an ultrasonic signal generating means, an ultrasonic vibrator for generating ultrasonic waves based on a signal from the ultrasonic signal generating means, and a horn for transmitting vibration from the ultrasonic vibrator. A brush unit having a brush head on which brush bristles are implanted, and a vibration receiving plate for receiving vibration from a horn while being integrally fixed to the brush head unit. The part and the brush part are in an ultrasonic ion toothbrush which is detachably mounted.
[0017]
(2) The brush part is an ultrasonic ion toothbrush which is supported and detachably attached to the main body part at two places, that is, the tip of the horn and the head of the main body part.
[0018]
Further, (3) the horn has a reduced portion, and the reduced portion is pressed and attached between a rib-shaped projection formed on the brush head portion and the vibration receiving plate, and is attached by ultrasonic waves. Exist in a toothbrush.
[0019]
Further, (4) a tapered portion having an inclination is formed at the tip of the reduced portion of the horn, and the ultrasonic ionic toothbrush in which the horn is guided by the tapered portion is present.
[0020]
Further, (5), the reduced part of the horn has an ultrasonic ion toothbrush having a semicircular cross section and a cutout groove formed in the arc.
[0021]
Further, (6), the brush portion is hollow, and has a leg portion extending slightly downward from the brush head portion, and the leg portion has a pair of tongue pieces at an end portion. The present invention resides in an ultrasonic ion toothbrush in which the pair of tongues are press-fitted into a pair of receiving grooves formed in the head of the main body.
[0022]
Further, (7) the vibration receiving plate exists in the ultrasonic ion toothbrush at least part of which is exposed to the outside from the brush head.
[0023]
(8) An ultrasonic ion toothbrush in which brush bristles are implanted on a vibration receiving plate.
[0024]
(9) The horn and the vibration receiving plate are electrically conductive, and the electrode portion is provided on the outer surface of the main body in the ultrasonic ion toothbrush which is electrically connected to the vibration receiving plate and the power source of the ultrasonic signal generating means.
[0025]
Also, (10), the power source of the ultrasonic signal generating means is an ultrasonic ion toothbrush which is a rechargeable power source.
[0026]
The present invention can naturally adopt a configuration in which two or more selected from the above 1 to 10 are combined as long as the object is achieved.
[0027]
BEST MODE FOR CARRYING OUT 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 flowing cross current between the tooth and the toothbrush to loosen the cross-linking between the tooth surface and the plaque due to calcium ions or the like in saliva, thereby more effectively removing plaque, That is, it has a function as an ion toothbrush.
And, by the ultrasonic energy, it has a function as an ultrasonic toothbrush that generates cavitation enough to remove plaque on the tooth surface and removes plaque more effectively, and two different actions will be described later. It has a synergistic toothpaste effect.
[0028]
FIG. 1 is an external view showing an ultrasonic ion toothbrush according to an embodiment of the present invention.
FIGS. 2A and 2B are sectional views showing the first half of the ultrasonic ion toothbrush, in which FIG. 2A is a plan sectional view and FIG. 2B is a side sectional view.
The toothbrush has a main body 1 provided with a means for generating ultrasonic vibration and a horn 3 for transmitting the vibration, a vibration receiving plate 4 for receiving vibration from the horn 3, and a brush head 2A on which brush bristles 5 are planted. And a brush unit 2 having the following.
[0029]
The ultrasonic vibration generating means includes an ultrasonic signal generating means 7 and an ultrasonic vibrator 8 for generating an ultrasonic wave based on 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 controlling a current for generating ions. An ion current control unit 20 and a power supply unit 16 are provided (see FIG. 3).
[0030]
The power supply unit 16 includes a chargeable rechargeable battery 17, a charge terminal 18, and a charge control unit 19 that controls charging of the rechargeable battery 17 from the charge terminal 18 during charging.
The control unit 13 controls the state of the ultrasonic ion toothbrush, and receives signals from a power switch 10 (see FIG. 1) provided outside the main body 1, a timer unit 15, and a power supply unit 16. Has been entered.
[0031]
Regarding the power supply, the control unit 13 receives a signal from a power switch 10 provided outside the main unit 1 and turns on / off the power supply based on the signal.
The power switch 10 is provided with a self-illuminating LED (not shown), which emits light when the power is on and turns off when the power is off.
If the rechargeable battery has insufficient electromotive force, the LED turns off and informs that charging is required.
[0032]
Conversely, when detecting the signal indicating that the charging is completed from the power supply unit 16, the control unit 13 blinks the LED in green to notify that the charging is completed.
The rechargeable battery 17 of the power supply 16 is charged via the charging terminal 18 when the main body 1 is mounted on a charging stand (not shown).
This charge is controlled by the charge control unit 19, and outputs this signal to the control unit 13 when the charge is completed.
[0033]
Next, the operation of each unit will be described based on the actual use procedure.
First, upon detecting a power-on signal from the power switch 10, the control unit 13 outputs a start signal to the timer unit 15, the ultrasonic transmitter 14, and the ion current control unit 20.
Upon detecting this signal, the timer unit 15 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.
In addition, a drive current transmitted at an ultrasonic frequency (for example, 2 million Hertz) is applied to the ultrasonic transducer 8 by the ultrasonic transmitter 14 which has simultaneously detected the activation signal.
[0034]
Similarly, the ion current control unit 20 that has detected the activation signal includes the plus electrode 11 that is an electrode unit provided on the outer surface of the main body and the vibration receiving plate 4 (the minus electrode) that is partially exposed to the outside 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 plus electrode 11 provided on the outer surface of the main body, and the power supply unit 16 are electrically connected to each other via a human body (for example, a human hand). It produces ions.
However, the current at the time of ion generation changes depending on the contact resistance between the tooth surface and the hand, and is controlled by the ion current control unit 20.
[0035]
Although the function as the ion toothbrush will be described later, the operation as the ultrasonic toothbrush will be described in more detail here.
The ultrasonic transducer 8 starts oscillating 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 integrally attached to the ultrasonic vibrator 8, and then to the vibration receiving plate 4 integrated with the brush head 2A.
Here, the structural characteristics 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]
FIGS. 4A and 4B are partially cutaway views of the horn protruding from the head 9 of the main body 1, wherein FIG. 4A is a partially cutaway plan view, and FIG. 4B is a partially cutaway side view.
The horn 3 is reduced in a certain range from the tip to become a reduced portion 3A (see FIG. 2), and has a semicircular cross section.
In addition, three notched grooves 3A2 such as a U-shaped groove or a V-shaped groove are formed in the arc-shaped portion of the reduced portion 3A, and it has been confirmed by an experiment that the transmission efficiency of the ultrasonic wave is extremely improved by these grooves.
[0038]
By the way, the ultrasonic vibration must be efficiently and accurately transmitted from the main body 1 to the brush 2.
For this purpose, the brush part 2 is detachably attached to the main body part 1 while being supported at two places, a first support place and a 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]
FIGS. 5A and 5B are views before the press-fitting showing the mounting relationship between the brush part 2 and the main body part 1 at the first support place, where FIG. 5A is a plan view and FIG.
FIGS. 6A and 6B are views after press-fitting showing the mounting relationship between the brush part 2 and the main body part 1 at the first support place, 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 having brush bristles 5, and a leg portion 2B extending slightly downward from the brush head portion 2A.
[0040]
The leg 2 </ b> B has a pair of tongues T at its end, and the tongue T is externally press-fitted into the head 9 of the main body 1.
The head 9 is formed so as to taper and extend forward from the main body 1 like a elephant nose. A pair of tongues T for receiving the pair of tongues T of the leg 2B is provided near the center outer periphery. Receiving groove G is formed.
[0041]
When the head 9 of the main body 1 is inserted into the brush part 2, the tongue piece T of the leg part 2B of the brush part 2 is fitted into the receiving groove G from the outside and is attached in a press-fit state.
In addition, since the tongue piece T and the receiving groove G are meshed with each other, there is no loosening such as rotation between them.
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 integrally embedded and attached to the brush head 2A of the brush portion 2 and the tip of the horn 3 projecting from the ultrasonic vibrator 8. It is.
The ultrasonic vibrator 8 has a disk shape and is held at several places by a plurality of support pieces 91 rising from the head 9 of the main body.
When the horn 3 of the main body 1 is inserted into the brush head 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 2A.
[0043]
Thus, the ultrasonic vibration is efficiently transmitted from the horn 3 to the vibration receiving plate 4 by the horn 3 being in strong contact with the vibration receiving plate 4.
Therefore, in the present invention, the rib-shaped protrusion P is provided on the inner wall of the brush head opposite to the position where the vibration receiving plate 4 is embedded.
[0044]
The horn 3 is in a state where its tip is press-fitted and supported between the rib-shaped projection P and the vibration receiving plate 4.
Since the horn 3 is in contact with the rib-shaped projection P on the arc surface formed in the reduced portion 3A, the contact area between the two is extremely limited.
[0045]
FIGS. 7 and 8 show the relationship between the horn 3 and the vibration receiving plate 4 at the second support location.
FIGS. 7A and 7B are views showing a state before the horn 3 is press-fitted between the vibration receiving plate 4 and the rib-shaped projections P. FIG. 7A shows a longitudinal section, and FIG. 7B shows a BB section.
[0046]
FIGS. 8A and 8B are views showing a state after the horn 3 is press-fitted between the vibration receiving plate 4 and the rib-shaped projections P. FIG. 8A shows a longitudinal section, and FIG. 8B shows a BB section.
Since the tip of the horn 3 is a tapered portion 3A1 having an inclination, it serves as a guide when the horn 3 rides on the rib-shaped projection P.
[0047]
Here, from the viewpoint of transmission of the ultrasonic vibration, since the horn 3 is in pressure contact with the rib-shaped projection P, transmission of the ultrasonic vibration is possible. However, the brush part 2 is connected to the main body via the long leg 2B. Due to the support at the part 1 and at the second support location, the transmission of vibrations is almost interrupted at this second support location.
[0048]
As described above, the main body portion 1 and the brush portion 2 are supported by the two positions of the first support position and the second support position, and do not touch each other.
In addition, at the second support location, the horn 3 only slightly touches the rib-shaped projection P and the vibration receiving plate 4 at the tip.
[0049]
Incidentally, the horn 3 has its base fixed to the ultrasonic vibrator 8, and other than that, it does not contact the wall of the main body 1.
However, the portion where the horn 3 protrudes from the head end of the main body 1 is closed by a 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, regarding the horn 3, the horn 3 is supported at only one location of the second support location, and the range of contact with other portions is extremely small.
As a result, the ultrasonic vibration is accurately and efficiently transmitted from the horn 3 to the vibration receiving plate 4 embedded in the brush head 2A, and the vibration energy is prevented from being diffused and attenuated.
[0051]
The first supporting portion serves to integrate the brush portion 2 and the main body portion 1 so as not to come off. It plays a role of communicating well.
Further, in the ultrasonic vibration transmission method, since the ultrasonic vibrator 8 as the vibration source and the horn 3 are integrated by, for example, soldering or the like, the ultrasonic vibration is transmitted through one joint point from the horn 3 to the vibration receiving plate 4. It can be seen that only the transmission is required, and the transmission efficiency of the ultrasonic vibration is improved as compared with the conventional ultrasonic toothbrush as described above.
[0052]
Now, the vibration receiving plate 4 of the brush portion 2 is embedded in the brush head portion 2A (usually formed of plastic) by insert integral molding. At this time, a projection is formed on a part of the vibration receiving plate 4. It is needless to say that the formation does not ensure the integration of both.
[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 directly transmitted to saliva and liquefied dentifrice directly in the oral cavity to generate cavitation.
Simultaneously, cavitation occurs, and as a result, the brush bristles 5 are finely vibrated, and a frictional action is generated between the brush bristles 5 in contact with the teeth and the teeth due to the minute vibrations.
As a result, the plaque adhering to the tooth surface is easily removed by weakening the bonding force to the tooth surface due to the cavitation effect and the frictional action.
[0054]
The above-mentioned operation of removing plaque by the cavitation effect is repeated. After a certain period of time, the control unit 13 receives an end signal from the timer unit 15 when a predetermined time has elapsed since the power was turned on. .
The ultrasonic transmitter 14 that is generating the drive current for the ultrasonic vibrator 8 stops generating the drive current in response to 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 generating function as an ion toothbrush will be described.
As shown in FIG. 1, an ion toothbrush is one that is conducted through a mouth between a main body portion 1 that is gripped by hand and a replaceable brush portion 2.
As described above, the portion of the main body 1 gripped by the hand is provided with the plus electrode 11 which is an electrode portion (for example, a metal plate) that comes into contact with the hand.
The plus electrode 11 is preferably provided in a direction perpendicular to the direction in which the brush bristles are implanted, from the viewpoint of whether or not the positive electrode 11 easily comes into contact with the hand when grasped.
[0056]
The positive electrode 11 serves as one electrode for passing a weak intraoral current, which will be described later, and is supplied with a power through an ion current control unit 20 which constitutes the ultrasonic signal generating means 7 disposed in the main body 1. It is conducted to the section 16.
The conductive vibration plate 4 (for example, duralumin), which is a negative electrode, is electrically connected to the conductive horn 3 (for example, duralumin) of the main body 1 and the power supply unit 16 via 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 2 </ b> A where a large number of brush bristles 5 are planted.
When the saliva and the liquefied dentifrice come into contact 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, and the gums (at least the teeth) A closed circuit of the negative pole of the vibration receiving plate 4, the horn 3, and the power supply (via the ion current control unit 20) is formed, and the current in the mouth flows as negative ions (see FIG. 9).
[0058]
This intraoral current loosens the bridging bonds with the tooth surface of plaque that has a tendency to ionize and makes it easier to separate.However, since cavitation is generated by the above-described ultrasonic vibration, the bridging bonds are more easily dissociated, and both actions are caused. The synergistic effect of
Therefore, the effect of more reliably removing the plaque due to the negative ions is exhibited.
[0059]
It should be noted that, for example, tourmaline is blended into the brush bristles 5 so that pressure is applied to the brush bristles 5 from the ultrasonic vibration of the vibration receiving plate 4 via the body of the brush head portion 2A, so that the brush bristles 5 are efficiently processed. Negative ions are generated.
Further, negative ions are also generated by the shock wave due to cavitation being applied to the brush bristles 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, an ultrasonic ion toothbrush has two functions of an ion and an ultrasonic wave. However, it is naturally possible to further apply mechanical vibration to the main body to enhance the usability.
[0061]
Further, the ultrasonic signal generating means of the present invention is not limited to the one shown in FIG. 3, and 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 light emission color and the light emission method of the LED are not limited to this embodiment. In addition, it is naturally possible to use an induced electromotive force instead of the charging coil as the charging terminal.
[0062]
【The invention's effect】
As described above, the ultrasonic ion toothbrush of the present invention can reliably remove plaque by the effect of loosening the cross-linking of dental plaque with the tooth surface by negative ions and facilitating separation, and the cavitation effect by ultrasonic vibration. Can be removed.
In addition, due to the cavitation effect, the cross-linking between the dental plaque and the tooth surface is more easily broken, and the ionic effect is enhanced.
[0063]
In addition, the ultrasonic ion toothbrush of the present invention has a high transmission efficiency of ultrasonic vibration, and effectively exhibits cavitation.
By these synergistic actions, 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 the first half of the ultrasonic ion toothbrush, where (A) is a plan cross-sectional view and (B) is a side cross-sectional view.
FIG. 3 is a block diagram showing an ultrasonic signal generating means.
FIG. 4 is a partially cutaway view of the horn protruding from the head of the main body, (A) is a partially cutaway plan view, and (B) is a partially cutaway side view.
FIGS. 5A and 5B are diagrams showing a mounting relationship between a brush portion and a main body portion at a first support place before press-fitting, wherein FIG. 5A is a plan view and FIG. 5B is a side view.
FIGS. 6A and 6B are views after press-fitting showing a mounting relationship between the brush portion and the main body portion at a first support location, wherein FIG. 6A is a plan view and FIG. 6B is a side view.
FIGS. 7A and 7B are diagrams showing a state before the horn is press-fitted between the vibration receiving plate and the rib-shaped protrusions, wherein FIG. 7A shows a longitudinal section and FIG. 7B shows a BB section thereof.
FIGS. 8A and 8B are views showing a state after a horn is press-fitted between the vibration receiving plate and the rib-shaped protrusions, where FIG. 8A shows a longitudinal section and FIG. 8B shows a BB section thereof.
FIG. 9 is a diagram illustrating an ionic action.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Body part 2 ... Brush part 2A ... Brush head part 2B ... Leg part 3 ... Horn 3A ... Reduction part 3A1 ... Tapered part 3A2 ... Notch groove 4 ... Vibration receiving plate 5 ... Brush bristle 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 wave transmitter 15 ... Timer part 16 ... Power supply part 17 ... Rechargeable battery 18 ... Charge terminal 19 ... Charge control part 20 ... Ion current control part G ... Receiving groove P ... Rib projection T ... Tongue piece

Claims (10)

An ultrasonic signal generator, an ultrasonic oscillator that generates an ultrasonic wave based on a signal from the ultrasonic signal generator, a horn that transmits vibration from the ultrasonic oscillator, and a brush bristle. A brush part having a brush head with planted hair, a vibration receiving plate for receiving vibration from a horn while being integrally fixed to the brush head part, and an ion generating means for generating ions, a main body part and a brush part; The ultrasonic ion toothbrush is detachably mounted. 2. The brush part according to claim 1, wherein the brush part is hollow, and is supported and detachably attached to the main body part at two points, that is, at the tip of the horn and at the head of the main body part. Ultrasonic ion toothbrush. 2. The horn according to claim 1, wherein the horn has a reduced portion, and the reduced portion is press-fitted between a rib-like projection formed on an inner wall portion of the brush head and the vibration receiving plate. The ultrasonic ion toothbrush as described. 4. The horn according to claim 3, wherein a tapered portion having an inclination is formed at a tip of the reduced portion of the horn, and the horn is easily guided on the rib-shaped projection by the tapered portion. Ultrasonic ion toothbrush. The ultrasonic ion toothbrush according to claim 3, wherein the reduced portion of the horn has a semicircular cross section, and a cutout groove is formed in the arc. The brush portion is hollow, has legs extending slightly downward from the brush head portion, and the legs have a pair of tongues at the ends. 2. The ultrasonic ion toothbrush according to claim 1, wherein the ultrasonic ion toothbrush is press-fitted from outside to a pair of receiving grooves formed in a 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. 8. The ultrasonic ion toothbrush according to claim 7, wherein bristles are also implanted on the vibration receiving plate. The horn and the vibration receiving plate are conductive, an electrode portion is provided on the outer surface of the main body, and the electrode portion is electrically connected to the power supply 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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