WO2009006760A1

WO2009006760A1 - Ultrasonic toothbrush

Info

Publication number: WO2009006760A1
Application number: PCT/CN2007/002129
Authority: WO
Inventors: Qinghua Shen; Makoto Hayakawa; Hideaki Kikuchi
Original assignee: Qinghua Shen; Makoto Hayakawa; Hideaki Kikuchi
Priority date: 2007-07-11
Filing date: 2007-07-11
Publication date: 2009-01-15

Abstract

An ultrasonic toothbrush includes a toothbrush head (3) with brush bristles (4) and a toothbrush handle (2). The toothbrush head (3) is connected to the toothbrush handle (2), a sealed storage cavity (1) is provided in the toothbrush head (3). A conductor (5) is provided on the toothbrush head (3). The brush bristles (4) are at least partially provided on the outer lateral surface of the conductor (5). An ultrasonic vibrator (11), which is coupled to the inside lateral surface of the conductor (5), is provided in the storage cavity (1). An exposed electrically conductive end (8) is provided on the toothbrush handle (2), with the outer lateral surface of the conductor (5) exposed. The electrically conductive end (8) and the conductor (5) are connected to the output electrodes of the circuit respectively. An ultrasonic vibrator (11) is connected to the circuit.

Description

Ultrasonic toothbrush

The invention relates to a daily product, in particular to an ultrasonic toothbrush.

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Background technique

As a daily necessities for people, toothbrush plays an indispensable role in maintaining people's dental health. With the improvement of people's living standards, ultrasonic toothbrushes have appeared in recent years, and ultrasonic vibrations are transmitted to human teeth, gums and mouth. The dirt toothbrush is loosened and more easily removed. However, the structure of the ultrasonic toothbrush until now is: the front end of the toothbrush handle is a sealed hollow structure, and an ultrasonic wave-resoning vibrator is provided therein, and the toothbrush head is made of a plastic shell structure. The bristles are provided on the upper side, and the front end of the handle is inserted into the sleeve of the brush head to bring the ultrasonic vibrator closer to the bristles.

In the technology, the ultrasonic vibrator does not fully contact the bristle part of the toothbrush head, and the vibration generated by the ultrasonic vibrator is absorbed by the plastic of the toothbrush head. The vibration energy is greatly attenuated when it is transmitted to the oral cavity, and the cleaning effect is not ideal, and the theory cannot be reached at all. The effect on it. Summary of the invention

It is an object of the present invention to provide an ultrasonic toothbrush which is highly desirable for cleaning teeth.

The invention is achieved by the following technical solutions: an ultrasonic toothbrush, a brush head with a bristles attached to the handle of the toothbrush, the inside of the toothbrush head is provided with a sealed accommodating cavity, and the toothbrush head is provided with an exposed a conductive member, the bristles are at least partially disposed on an outer side surface of the conductive member, and an ultrasonic vibrator fixed to the inner side surface of the conductive member is disposed in the accommodating cavity, and an exposed conductive end is disposed on the toothbrush handle, and the conductive member is externally The side is exposed; the conductive end and the conductive member are respectively electrically connected to the output electrode of the circuit, and the ultrasonic vibrator is electrically connected to the circuit.

In the invention, the brush head is disposed on the toothbrush head on the side of the brush, and the bristles can be implanted on the outer side of the conductive member, and the vibration generated by the ultrasonic vibrator is directly transmitted through the conductive member, and the vibration energy is less attenuated, and the tooth is cleaned. The effect is good; at the same time, the outer side of the conductive member can be in contact with the saliva and toothpaste of the oral cavity, and as one of the electrodes, the conductive end serves as the other electrode. When the tooth is brushed, the hand is held on the handle of the toothbrush and is electrically conductive. The end contact, the oral cavity is in contact with the conductive member, and a micro current is formed in the oral cavity to release the bridging structure of the calcium ion. The cleaning effect of the toothbrush is very good; among them, the conductive parts should be made of materials that are conductive, rust-proof and have a certain hardness, such as stainless steel and the like; it should be noted that: the outer side of the conductive parts is exposed It is to guide the outer side of the electrical component not to be wrapped by the plastic material of the toothbrush head, so as to facilitate contact with liquid substances such as saliva and toothpaste in the oral cavity, not to say that the conductive member protrudes from the toothbrush head. Upper surface.

Further improvements of the invention are:

A sealed cavity is disposed in the handle, and the circuit includes a control circuit and a power source disposed in the cavity. The control circuit and the power supply are disposed in the cavity to make full use of the space inside the toothbrush handle to make the structure more compact.

The toothbrush head and the toothbrush handle are of independent structure, and the two are butted by a fastening device. The toothbrush head is provided with two toothbrush head butting electrodes on the toothbrush head, and the toothbrush head is provided with a toothbrush head on the toothbrush handle. The two toothbrush handles are opposite to each other; the toothbrush head butt electrode is electrically connected to the ultrasonic vibrator and the conductive member, and the toothbrush handle butt electrode is electrically connected to the control circuit and the power source. The toothbrush head and the toothbrush handle are of independent structure. When charging, the toothbrush head can be additionally placed to prevent the toothbrush head from being contaminated by dust, the brush head of the toothbrush head is detached, or the toothbrush head is damaged after repeated use, the toothbrush head can be replaced. The cost of replacement is low.

The rear end of the toothbrush head is a bell mouth, and the front end of the toothbrush handle is a tip end. The tip end can be placed in the bell mouth and cooperate with the bell mouth, and the opposite convex portions are respectively arranged on the mating surfaces of the bell mouth and the tip end. And the concave portion; the fastening device is the bell mouth, the tip end and the convex portion and the concave portion thereon. When the buckle is fastened, the tip is inserted into the bell mouth, and the convex portion on the mating surface is inserted into the concave portion to position the toothbrush head and the toothbrush handle; and the bell mouth or the tip portion is provided with a waterproof gasket to waterproof into the cavity to affect the performance of the power supply and the control circuit. . .

The power source includes a rechargeable battery and a non-contact charging charging coil electrically connected to the rechargeable battery. The charging coil is connected to another charging coil connected to the charging power source to generate an inductance in the charging coil, and then the inductor is converted into a current to charge the rechargeable battery, and the non-contact charging method is adopted, so that the toothbrush handle can be better protected. The sealing effect of the cavity.

A vibration motor is provided in the cavity, and the vibration motor is electrically connected to the circuit. When brushing your teeth, enhance the effect of brushing your teeth.

A window is provided on the toothbrush head or the handle of the toothbrush. Correspondingly, an indicator light is provided in the accommodating cavity or the cavity at the position of the window, and the indicator light is electrically connected to the circuit. This indicator light allows you to observe the working condition of the toothbrush. '

A switch is provided on the handle of the toothbrush, the switch being electrically connected to the control circuit. The switch can control the opening and closing of the ultrasonic vibrator or the like of the toothbrush.

The conductive member is provided with at least two bristle holes, and the bristles are implanted on the bristle holes of the conductive member. This structure can ensure that the conductive member is fully exposed, so that the attenuation of the ultrasonic vibrator is small, and the conductive effect of the conductive member is ideal. DRAWINGS

Figure 1 is a front elevational view of the ultrasonic toothbrush of the present invention;

Figure 2 is a side view of Figure 1; Figure 3 is a rear elevational view of Figure 1;

Figure 4 is a longitudinal sectional view of Figure 2;

Figure 5 is an enlarged cross-sectional view of the toothbrush head of Figure 4;

Figure 6 is a front cross-sectional view of Figure 5;

Figure 7 is a circuit schematic diagram of the present invention;

Description of the reference signs:

1, accommodating cavity, 2, toothbrush handle, 3, toothbrush head, 4, bristles, 5, conductive parts, 6, window, 7, switch, 8, conductive end, 9, vibration motor, 10, control circuit, 11, Ultrasonic vibrator, 12, brush pores, 13, power supply, 14, cavity, 15, bell mouth, 16, head end, 17, rechargeable battery, 18, charging coil, 19, main control circuit, 20, timing circuit, 21, Ultrasonic transmitter, 22, oral micro-current control circuit, 2e, toothbrush handle to connector, 3e, toothbrush head to connector, 10e, indication 3⁄4

As shown in FIG. 1 to FIG. 6, an ultrasonic toothbrush, the toothbrush head 3 with the bristles 4 is connected to the toothbrush handle 2, and the inside of the toothbrush head 3 is provided with a sealed accommodating cavity 1 which is provided at the toothbrush head 3± The conductive member 5, the bristles 4 are at least partially disposed on the outer side of the conductive member 5, and the ultrasonic vibrator 11 fixed to the inner side surface of the conductive member 5 is disposed in the accommodating chamber 1, and the toothbrush handle 2 is exposed. The conductive end 8 is exposed on the outer side surface of the conductive member 5; the conductive end 8 and the conductive member 5 are electrically connected to the output electrodes of the circuit, respectively, and the ultrasonic vibrator 11 is electrically connected to the circuit.

The conductive member 5 is in the form of a block having four bristle holes thereon, and the bristles 4 are implanted on the bristle holes 12 of the conductive member 5. The number and size of the brush holes are designed according to the model of the toothbrush, the use of the crowd, and the like. The head 3 and the toothbrush handle 2 are of independent structure, and are made of ABS plastic, and the two are butted by a fastening device (the rear end of the toothbrush head 3 is a bell mouth 15 and the front end of the toothbrush handle 2 is a tip end 16 which can be The bell mouth 15 is disposed in the bell mouth 15 and cooperates with the bell mouth 15. The opposite surfaces of the bell mouth 15 and the tip end 16 are respectively provided with opposite convex portions and concave portions; the fastening device is the bell mouth 15, the tip end 16 and the upper portion thereof. a convex portion, a concave portion), two toothbrush head docking electrodes 3e are disposed on the toothbrush head 3 at the mating position, and two toothbrush handle docking electrodes which are opposite to the toothbrush head butting electrode 3e are disposed on the toothbrush handle 2 at the docking position 2e (toothbrush handle butt electrode 2e, toothbrush head butt electrode 3e is realized by means of quick docking plug and socket); toothbrush head butt electrode 3e is electrically connected with ultrasonic vibrator 11 and conductive member 5, toothbrush handle butt electrode 2e and control circuit 10 , power supply 13 The toothbrush handle 2 is provided with a sealed cavity 14 . The circuit includes a control device 10 and a power source 13 disposed in the cavity 14 . The power source 13 includes a rechargeable battery 17 and a non-contact type electrically connected to the rechargeable battery 17 . a charging coil 18 for charging; a vibration motor 9 is disposed in the cavity 14, and the vibration motor 9 is electrically connected to the circuit; a window 6 is disposed on the toothbrush head 3 or the toothbrush handle 2, and correspondingly, the receiving cavity 1 or the window 14 is provided with an indicator light 10e at the position of the window 6, the indicator light 10e is electrically connected to the circuit; and the switch 7 is provided on the toothbrush handle 2, the switch 7 is electrically connected to the circuit.

As shown in FIG. 7, the control circuit of the present invention comprises a main control circuit 19, a timing circuit 20, an ultrasonic transmitter 21, and an oral micro-current control circuit 22. The timing circuit 20 is used to control the working time of the ultrasonic vibrator 11 each time. The ultrasonic transmitter 21 can be used to output a frequency of 1.2 MHz to vibrate the ultrasonic vibrator 11 at this frequency, and the oral micro-current control circuit 22 can input a voltage to the conductive member 5 and the conductive terminal 8. .

When brushing the teeth, the switch 7 is turned on, and the ultrasonic vibrator generates a vibration frequency of about 1. 2MHZ, which is transmitted to the oral cavity via the conductive member 5, and the attenuation of the ultrasonic vibration is small, and the cleaning effect on the teeth is good; the conductive member 5 serves as the negative electrode to contact the oral cavity, and the toothbrush The conductive end 8 on the handle 3. is contacted with the hand as a positive electrode, and a micro current is formed in the oral cavity. The micro current can relieve the bridging structure of calcium ions. When brushing, the I motor 9 also vibrates at the same time; When the charging coil 18 is close to the charging line of the charging power source, the charging coil 18 generates an inductance and converts it into a current to charge the rechargeable battery 17; after the toothbrush head is used or damaged for a long time, it can be replaced separately. The cost of replacement is low.

Claims

Rights request

An ultrasonic toothbrush, the toothbrush head (3) with bristles (4) attached to the handle (2), characterized in that the inside of the toothbrush head (3) is provided with a sealed receiving cavity (1), A conductive member (5) is disposed on the toothbrush head (3), and the bristles (4) are at least partially disposed on an outer side surface of the conductive member (5), and are disposed in the accommodating cavity (1) with the conductive member (5) The ultrasonic vibrator (11) fixed on the inner side surface is provided with an exposed conductive end (8) on the toothbrush handle (2), and the outer side surface of the conductive member (5) is exposed; the conductive end (8) and the conductive member (5) They are electrically connected to the output electrodes of the circuit, respectively, and the ultrasonic vibrator (11) is electrically connected to the circuit.

2. The ultrasonic toothbrush according to claim 1, wherein said toothbrush handle (2) is provided with a sealed cavity (14), said circuit comprising a control circuit disposed in said cavity (14) 10), power supply (13).

The ultrasonic toothbrush according to claim 2, wherein the toothbrush head (3) and the toothbrush handle (2) are independent structures, and the two are butted by a fastening device, and the toothbrush head (3) Two toothbrush head docking electrodes (3e) are provided at the docking position, and two toothbrush handle docking electrodes (2e) are provided on the toothbrush handle (2) opposite to the toothbrush head butting electrode (3e); the toothbrush head The butt electrode (3e) is electrically connected to the ultrasonic vibrator (11) and the conductive member (5), and the toothbrush handle butt electrode (2e) is electrically connected to the control circuit (10) and the power source (13).

4. The ultrasonic toothbrush according to claim 3, wherein the rear end of the toothbrush head (3) is a bell mouth (15), and the front end of the toothbrush handle (2) is a tip end (16), the tip end (16) It can be placed in the bell mouth (15) and matched with the bell mouth (15), and opposite convex portions and concave portions are respectively arranged on the mating surfaces of the bell mouth (15). and the tip end (16); the fastening device It is the bell mouth (15), the tip end (16) and the convex portion and the concave portion thereon.

The ultrasonic toothbrush according to any one of claims 1 to 4, wherein the power source (13) comprises a rechargeable battery, (17) and a non-contact charging electrically connected to the rechargeable battery (17). Use the charging coil (18).

The ultrasonic toothbrush according to any one of claims 1 to 4, characterized in that a vibration motor (9) is provided in the cavity (14), and the vibration motor (9) is electrically connected to the circuit .

The ultrasonic toothbrush according to any one of claims 1 to 4, characterized in that a window (6) is provided on the toothbrush head (3) or the toothbrush handle (2), corresponding thereto, An indicator light (10e) is disposed in the accommodating cavity (1) or the cavity (14) at the window (6), and the indicator light (10e) is electrically connected to the circuit.

The ultrasonic toothbrush according to any one of claims 1 to 4, characterized in that a switch (7) is provided on the handle (2), and the switch (7) is electrically connected to the circuit.

The ultrasonic toothbrush according to any one of claims 1 to 4, characterized in that the conductive member (5) is provided with at least two bristle holes (12), and the bristles (4) are implanted in the On the bristle hole (12) of the conductive member (5).