JPH0810046A - Electronic toothbrush - Google Patents

Abstract

PURPOSE:To enable a user to affirm energization with ease by electrically connecting a light emitting diode and a sounding means with each other, providing a projection section for the tip end section of a handle section which can be freely mounted/ demounted, providing a groove in which the major section of the projection section is provided, and a slit in which a part of the projection section is accepted, in a bristled section, and also providing a retaining means which prevents the parting of the handle section to the slit. CONSTITUTION:A transmission electric circuit 14 having a light emitting diode and a sounding means is provided to the inside of the recessed section 13 of a handle section 3, and the plus terminal 18 of the transmission electric circuit 14 is connected to a terminal 29 so as to be a plus side. A shaft 35 is inserted in a projection section 34 in front of the handle section so as to be brought into contact with the minus terminal 20 of the transmission electric circuit 14. In order to install a bristled section 2 onto the handle section 3, the front section of the handle section 3 is inserted into the groove 10 of the filling section 2, and let projection section s 36 and 37 at the forward section of the handle section 3 be engaged with both slits 10 and 11 and a dent 12. When electricity is turned on to a plug 7 via the body and mouth of a user with the terminal 29 touched by his hand, a signal is outputted.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to electronic toothbrushes.

[0002]

2. Description of the Related Art A battery is housed inside a handle portion of a toothbrush, one pole of the battery is connected to a bristle portion by a conductor, and a conductor (terminal) for connecting to another pole of the battery is provided on the surface of the handle portion. By fixing the electric conductor (terminal) fixed to the surface of the handle part with your hand and applying the toothbrush bristles to the tooth, an electric current is passed from the hand through the human body to the surface of the tooth. An electronic toothbrush for energizing a conductor is already known as disclosed in JP-A-52-90361.

In a conventional electronic toothbrush, when a handle is gripped with a hand, a current of about 50 to 100 μA is applied so that a (+) current flows in the body. It is charged, and the (+) of the plaque and the (+) of the electric current flowing through the teeth repel each other, and the plaque becomes easier to separate from the teeth.
It is attracted to the (-) hair. However, in the conventional electronic toothbrush, it is unclear whether or not the power is actually supplied at the time of use, and the user uses the electronic toothbrush while feeling anxious about whether or not the power is supplied. However, it was troublesome for the user to confirm that the power was supplied. In addition, the user, for example, whether the child is actually using the third
Persons such as parents could not confirm.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and allows the user to easily confirm the energization and the third party to confirm the usage state. An object is to provide a toothbrush.

[0005]

The present invention solves the above-mentioned problems.
A flocked part in which hair is planted, a handle part detachable from the flocked part, a battery arranged inside a tray forming a part of the handle part, and one electrode of the battery and the flocked part are connected. First to do
It has a conductor and a second conductor which is provided on the surface of the handle and is connected to the other electrode of the battery, and when both conductors are conducted through the liquid component in the mouth, a current of 50 μA minimum is obtained. A flowing electronic toothbrush, the electrical circuit comprising a light emitting diode and a sounding device and energizing the light emitting diode and the sounding device to operate at a current of at least 50 μA, the first conductor of the electronic toothbrush and the battery. The handle part that is detachably attached to the bristle portion has a protrusion having a cross shape in a cross section, and the bristle implant portion is the main part of the protrusion. A groove for receiving and a slit for receiving a part of the protrusion, the slit having a shape for communicating the outside with the groove, and the slit is provided with a retaining means for preventing the handle from the bristle portion. The solution is to provide an electronic toothbrush that does.

[0006]

When the user holds the conductor of the handle, that is, the terminal, with the bristles of the electronic toothbrush in his mouth, the conductor, the body, the brim in the mouth, the plug, the shaft, and the electric circuit in the handle are closed. A circuit is created that emits light and / or sound during a closed circuit. Since such light and sound signals can be confirmed from the outside, a parent outside the washroom can easily recognize that the child is brushing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. The electronic toothbrush 1 includes a flocking portion 2, a handle portion 3, and a battery cassette 4, which are detachably connected to each other. The flocked portion 2 has a brush head 6 having a plurality of holes 5 for flocking a brush (not shown) at a tip thereof, and a plug 7 made of a conductive material is press-fitted and implanted near the head 6. And a central hole 8 extending from the rear end to the rear end, and the bottom of the plug 7 extends to the front end of the central hole 8. In the central hole 8, a plate 9 made of a conductive material is arranged. The plate 9 has a step, and opposing side surfaces elastically contact the upper and lower walls of the central hole 8 to prevent the plate 9 from falling out of the central hole 8. The central hole 8 is a groove 10 in the rear part of the flocked part 2.
To open. The groove 10 has a slit 11 along the longitudinal direction and an indentation 12 orthogonal to the slit 11 on the opposite side wall surface. The end of the plate 9 has a recess 12 extending vertically, and the recess 12 faces the bottom wall of the groove 10. The flocked portion 2 is formed by molding with synthetic resin or apatite ceramic molding.

The handle portion 3 has an upper open type recess 13 at the center thereof.
And a transmission electric circuit 1 to be described later in the recess 13.
4, 1st and 2nd terminal boards 15 and 16 are arranged. The transmitting electric circuit 14 has a light emitting diode and / or a sounding device,
It has positive terminals 17, 18 and negative terminals 19, 20. The vertical piece 21 of the first terminal plate 15 is inserted into the hole 22 of the protrusion in the recess 13. The facing vertical piece 23 of the first terminal plate 15 is brought into contact with the (+) surface of the battery 24, and the terminal plate 15 is connected to the positive terminal 17 of the transmission electric circuit 14. The vertical piece 25 of the second terminal board 16 is inserted into the hole 26 on the side surface of the handle portion 3, the cut-and-raised piece 27 is brought into contact with the (-) surface of the battery 24, and the terminal board 16 is generated. It is connected to the negative terminal 19 of the circuit 14.

A silicon waterproof seal 28 is covered in the upper opening of the recess 13 and the seal 28 is fixed to the handle 3 by a conductor made of a conductive material, that is, a terminal 29. The terminal 29 has a semi-cylindrical shape and is pressed against the side surface of the handle portion 3, the protrusion 30 of the handle portion 3 is press-fitted into the hole 30 ′ of the terminal 29, and the terminal 29 is firmly held by the handle portion 3.

The positive terminal 18 of the transmission electric circuit 14 is connected to the terminal 29 via the swirl spring 37, and the terminal 29 is placed on the positive side. Hole 3 of waterproof seal 28
2 and the hole 33 of the terminal 29 are used to detect the light of the light emitting diode of the transmission electric circuit 14.

A hollow protrusion 34 is provided in front of the handle 3.
A shaft 35 made of stainless steel is inserted into the recess 13 from the protrusion 34. The rear end of the shaft 35 is the transmission electric circuit 1
4 to the minus terminal 20. The handle 3 has a cross-shaped front portion having a cross-shaped cross section, and has a protrusion 36 to be inserted into the slit 11 of the flocked portion 2 and a protrusion 37 to be fitted into the recess 12. To attach the flocked part 2 to the handle part 3, the shaft 35 is inserted into the central hole 8 so that the front part of the handle part 3 is inserted into the groove 10 of the flocked part 2, both slits 10, 11 and The projections 36 and 37 are fitted into the recess 12, and the shaft 35 is brought into contact with the rear piece 12 ′ of the plate 9. As a result, the flocked part 2 is firmly supported by the handle part 3. Removal is the flocked part 2
It is enough to pull out from the handle portion 3 strongly.

The battery cassette 4 has a T-shaped recess 38 in its front portion, and the O-ring 3 is provided in the step portion of the battery cassette 4.
9 is arranged, and a stopper 40 having a protruding shape is provided on the side surface thereof. The rear T-shaped portion 42 of the tray 41 made of a non-conductive material is fitted in the recess 38, and the battery 24 is placed on the tray 41. The front portion 43 of the battery cassette 4 is inserted into the rear opening of the handle portion 3, and the (+) surface of the battery 24 is brought into contact with the vertical piece 23 and the (−) surface is cut and raised to be brought into contact with the piece 27. Stopper 4
0 is fitted in the hole 44 on the side of the terminal 29 to prevent the battery cassette 4 from coming off the handle 3.

Referring to FIG. The transmitting electric circuit 14 is incorporated into a circuit board housed in the recess 13. As shown in FIG. 3, this circuit includes a light emitting diode 45 and a buzzer 46.
When the user's hand touches the terminal 29 and the plug 7 is energized through the body and mouth, the amplifier circuit including the resistors R1 and R2 and the amplifier 47 causes the base of the transistor 48 to reach the base. Applied, transistor 4
8 is turned on, and the light emitting diode 45 and the buzzer 46 in parallel therewith are energized to emit a signal. still,
FIG. 5 shows another modification of the circuit diagram of FIG. 4, in which, instead of the light emitting diode 45 and the buzzer 46, a voicing device including a synthetic sound source circuit 49, an amplifier 50 and a speaker 51 is connected, and the toothbrush 1 is used. In the state, it is also possible to play a voice, music, music, etc. stored in advance from the speaker 51 to make the user have fun, or to let a third person hear the use state by hearing.

[0014]

According to the present invention, the light emitting diode emits light when energized and the sounding device emits sound with a simple structure in which the light emitting diode and the sounding device are provided, so that the energization can be easily confirmed. Therefore, the user can always use the electronic toothbrush without worrying about energization without worry. In addition, the relatives can check whether the child or the like is actually using it, which is also useful for brushing and encouraging. in addition,
The front portion, that is, the protrusion having a cross-shaped cross section of the handle, and the engagement between the groove and the slit of the bristle portion eliminate the play between the handle and the bristle portion,
In addition, the removal of the hair is prevented and the electric connection between the flocked portion side and the handle portion side is ensured.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a handle portion and a battery cassette portion.

FIG. 2 is a perspective view of a flocked portion.

FIG. 3 is a perspective view of a plate.

FIG. 4 is a diagram of an example of an electronic circuit.

FIG. 5 is a circuit diagram of another example.

[Explanation of symbols]

 2 Flocking part 3 Handle part 4 Battery cassette 7 Plug 8 Central hole 9 Plate 13 Recessed part 14 Transmission electric circuit 24 Battery 28 Waterproof seal 29 Terminal 35 Shaft

Claims (1)

[Claims] 1. A flocked part in which hair is planted, a handle part detachable from the flocked part, a battery disposed inside a tray forming a part of the handle part, one electrode of the battery, and A first conductor that connects the flocked portion, and a second conductor that is provided on the surface of the handle and that is connected to the other electrode of the battery,
If both conductors conduct through the liquid component in the mouth, a minimum of 50μ
An electronic toothbrush carrying a current of A, comprising: an electric circuit having a light emitting diode and a sounding device and energizing the light emitting diode and the sounding device to operate at a current of at least 50 μA. The body and the battery are arranged so as to be electrically connected to each other, and the handle part that is detachable from the flocked part has a protrusion having a cross-shaped cross section at its tip,
The flocked part has a groove for receiving the main part of the projection and a slit for receiving a part of the projection, and the slit has a shape for communicating the outside with the groove, and the stem part is prevented from coming off from the flocked part. An electronic toothbrush, characterized in that means are provided in the slit.