JP2003164473A - High-speed vibration toothbrush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the cost of a high-speed vibration type electric toothbrush by using neither an expensive linear motor nor a reversing motor. <P>SOLUTION: High-speed vibration generating means comprises a motor 6 and a weight 6b, or an eccentric member rotated by the motor 6 and vibrates the head 3, or the tip of a brush part 2, at high speed. The motor 6 is driven by a plurality of series-connection batteries. The motor 6 is rotated at 17,000-24,000 r.p.m. to provide the high-speed frequency of the same. A body part 1 has a long cylindrical shape, the batteries 7 stored therein are disposed toward the longitudinal cylindrical bottom part, and the motor 6 is disposed toward a brush attaching/detaching part in the longitudinal tip part, so that the vibration is concentrated to the brush part 2. The spring pressures of a spring 10 and a terminal 11, or contact terminal members of the battery 7, are set high to prevent noise caused by resonance with the high-speed vibration. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a toothbrush,
In particular, it relates to an electric toothbrush using a battery as a power source.

[0002]

2. Description of the Related Art Electric toothbrushes have been put to practical use and are widely used. The structure is roughly classified into one in which a round brush portion is rotated and polished by a motor and the other in which the brush portion is reciprocated by a motor or an electromagnet.

Of the above-mentioned two types, the latter of which reciprocates the brush portion, has a frequency of 2000 to 8 per minute.
For a relatively low frequency of about 000 times, a direct current motor is driven by using one or two dry batteries as a power source to obtain a required frequency, while for a frequency of 20,000 times or more, a linear motor is used. A high-frequency vibration is realized using a reversing motor or an ultrasonic vibration element.

[0004]

However, in the reciprocating motion of such a brush portion, when the frequency of the former is about 2000 to 8000 times per minute, the frequency is low, so old dental plaque and polishing of the teeth are caused. Plaque in difficult places is hard to remove. In addition, the frequency is 8000 to 1000
Around 0 times is an uncomfortable area that gives the user discomfort,
Not suitable for practical use. On the other hand, the latter frequency is 20 per minute.
Since the frequency of 000 times or more is high, it is possible to remove old dental plaque and plaque in difficult-to-brush areas, but high vibration is obtained by using an expensive linear motor, reversing motor, or ultrasonic vibration element. Since the number of vibrations is realized, the cost of parts increases, which causes the product price to rise. It is an object of the present invention to provide an electric toothbrush in such a situation as a high-speed vibration type in which dirt can easily be removed, and at the same time, to provide the user with low cost and low cost.

[0005]

According to the present invention, there is provided a main body having a shape for accommodating a motor and a plurality of batteries for driving the motor and which can be easily grasped by one hand, and an end of the main body. And a brush portion having a toothbrush bristle at its tip, the motor and an eccentric member rotated by the motor constitute a high-speed vibration generating means, and the brush portion is vibrated at a high speed. The frequency at which the brush portion is vibrated at a high speed can be solved by setting a high speed of 17,000 to 24,000 times per minute.

Further, according to the present invention, according to the present invention, the above-mentioned problems can be solved by setting the voltage supplied to the motor to be equal to or higher than or equal to the rated voltage of the motor.

Further, according to the present invention, the above-mentioned problem is solved in the above-mentioned means, in which the main body has a longitudinal cylindrical shape,
The battery to be housed inside is placed near the base of the long tubular shape,
The motor is arranged near the brush attaching / detaching portion at the distal end of the long tubular shape, so that the vibration is concentrated on the brush portion.

Further, according to the present invention, according to the above-mentioned means, the contact terminal member of the battery prevents the resonance by increasing the spring pressure for pressing the battery terminal. Will be resolved.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A high-speed vibrating toothbrush according to the present invention is one in which a weight is attached to a rotating shaft of a motor in an eccentric state, and the vibration is transmitted to a toothbrush at the tip of a main body to vibrate the brush at high speed. Is. The rotation speed of the motor is set to 17,000 to 24,000 times per minute, and the brush part vibrates at high speed with the high speed rotation of the motor, and old plaque of teeth and plaque in places where it is difficult to polish can be efficiently removed. it can.

The frequency range of 8000 to 10000 times per minute is used to avoid an uncomfortable region where the user feels uncomfortable. Then, as the electric toothbrush, a frequency called a sound wave region where a known effect is obtained around 20000 times when the plaque removing ability is dramatically improved is used.

Conventional products called high-speed sound waves use a linear motor, a vibration element, a special motor, or the like 280
The frequency is set to 00 or more. Considering that if the vibration effect is too strong, the human body is adversely affected, and a timer circuit is incorporated with the usage time of about 2 minutes as the rated usage time.

With respect to such a conventional product, 17,000 to 24,000 times claimed by the present invention is the lowest region within which the effect of the "sound wave region" can be obtained, and unnecessary vibration in the excessively strong region is eliminated. Even with the minimum necessary setting, the effect of removing plaque in the "sound area" can be sufficiently obtained.

Since the vibration is not too strong, the adverse effect on the human body is reduced, and the conventionally required timer is unnecessary.

Since the frequency is about twice as high as that of the uncomfortable region of 8000 to 10,000 times, the vibration width becomes small, and the uncomfortable region is not felt uncomfortable.

The conventional product called "high-speed sonic vibrating toothbrush" uses a linear motor, a vibrating element, a special motor or the like, and the vibration source and the brush are directly connected to each other. In the case of a method in which an eccentric weight is attached to the shaft to obtain vibration, the vibration source is not directly connected to the brush, but the vibration is transmitted to the brush tip through the main body case. With such a configuration, when the brush is pressed against the teeth, the effect of transmitting the vibration is deteriorated, so that the effect of reducing the amount of vibration can be obtained, and the above-mentioned "too strong" measure can be taken. As you did, you don't need a timer.

Such a system in which a weight is attached to a normal motor to obtain vibration also has an effect of reducing cost.

High-speed vibration of 17,000 to 24,000 times per minute is realized by setting the voltage supplied to the motor to a voltage above or below the rating obtained from a plurality of batteries connected in series.

By virtue of the fact that the main body portion has a long tubular shape, the battery to be housed inside is disposed near the base portion of the longitudinal tubular portion, and the motor is disposed near the brush attaching / detaching portion of the tip portion of the longitudinal tubular portion, the vibration is generated. Can be concentrated on the brush portion, and tooth brushing can be performed efficiently.

Since the main body vibrates, the internal motor or battery may generate noise or noise. Therefore, the contact terminal member of the battery takes a high spring pressure for pressing the contact terminal to prevent resonance.

The high-speed vibrating toothbrush of the present invention does not use a special motor such as a linear motor or a reversing motor, but uses a general motor, and as described above, is constructed by attaching an eccentric weight to the rotary shaft thereof. Therefore, the rotating shaft of the motor, which is the vibration source, and the toothbrush cannot be directly connected. The vibration is transmitted to the tip of the toothbrush via the main body.
When a strong pressure is applied to the vibrating toothbrush tip, the vibration transmitted through the main body portion is canceled and the vibration amount of the toothbrush portion decreases.

On the other hand, when a linear motor is used, vibration is transmitted from the toothbrush support shaft connected to the vibration source to the toothbrush tip. When the vibration is transmitted by such a toothbrush support shaft, the vibration is not canceled even if pressure is applied to the toothbrush.

Since the high-speed vibrating toothbrush vibrates strongly, some users may find it painful when brushing their teeth. Therefore, there is a merit that "the amount of vibration is reduced when pressed strongly" as in the present invention. This phenomenon is
According to an experiment conducted by the inventor of the present invention, even with an electric toothbrush of the type in which the same weight is used as a vibration source, the conventional frequency is 4000 per minute.
It could not be confirmed with a toothbrush of about 7,000 rotations. Therefore, the frequency of high-speed vibration is 17,000 per minute
It is possible to experience the sensation that the amount of vibration is reduced only when the high-speed vibrating toothbrush of the present invention is strongly pressed 24,000 times, which is a unique effect of the present invention.

[0023]

1 is a sectional view for explaining the structure of an embodiment of a high-speed vibrating toothbrush of the present invention. In the figure, reference numeral 1 denotes a toothbrush, which is a main body having a shape and dimensions that can be easily gripped by a hand, is formed of resin in a tubular shape, and accommodates a battery and a motor, which will be described later, inside. Reference numeral 2 is a brush portion detachably provided at one end of the main body portion 1, and a brush 4 is planted on a head 3 having a small tip. Reference numeral 5 denotes the above-mentioned attachment / detachment portion at the end portion of the main body portion 1 and the end portion of the brush portion 2, both of which can be easily attached / detached and replaced by a method such as a screw or a bayonet, and when attached, surely. It is supposed to be retained. Since such a structure is known, detailed illustration and description thereof will be omitted.

A motor 6 is housed inside the main body 1. In this embodiment, the motor is a DC motor having a rated voltage of 7 volts and a rotation speed of about 30,000 rpm, and a weight 6b is attached to the tip of the rotation shaft 6a. The weight 6b is eccentric with respect to the rotation shaft 6a. Install with. The motor 6 is located inside the main body 1 in the upper direction,
A motor arranging portion (not particularly shown) is provided at a position close to.

Reference numeral 7 is a battery. In this embodiment, a dry battery is used, and four AA type dry batteries are connected in series and used. The battery 7 is arranged in the main body 1 at a position closer to the bottom and closer to the base, with a battery chamber (not shown) provided.

Reference numeral 8 is a push button for turning on the power supply, and 9 is a push button for turning off the power supply, which is interlocked with an electric switch (not shown).

Reference numeral 10 is a spring as an electric contact that contacts the terminal of the battery 7, and is a known spirally wound conductive spring. Further, reference numeral 11 is a terminal as an electric contact in contact with the other electrode of the battery 7, which is a well-known terminal formed of a conductive and elastic metal plate. The spring 10 and the terminal 11 are set so that a spring pressure stronger than usual can be obtained for the reason described later.

Since the electric wiring is a simple one in which a motor, a battery and a switch are connected in series, illustration and description thereof will be omitted.

In the high-speed vibrating toothbrush of the present invention having such a structure, when the push button 8 for turning on the power is pressed, the voltage of the battery 7 is applied to the motor 6, the motor 6 starts rotating, and the rotating shaft 6
The weight 6b is rotated via a. Motor 6 is rated 7
Since it is a volt type, a voltage of about 6 volt is applied and it rotates at a speed below the rated value. In the experiment by the inventor of the present invention, the rotation speed of 17,000 to 24,000 rpm was obtained. When the power is off, the push button 9 for power off is pressed.

Since the weight 6b is attached in an eccentric state with respect to the rotating shaft 6a, the entire main body 1 vibrates via the motor 6 as the motor 6 rotates at high speed.

As described above, the motor is disposed slightly closer to the tip from the center of the main body 1, so that the high-speed vibration generated by the weight 6b is propagated so as to vibrate greatly as the distance from the motor 6 increases. The largest amplitude is obtained at the base of the main body 1, and the tip of the brush 2, that is, the head 3. Therefore, the vicinity of the portion held by the hand also vibrates greatly, and the hand becomes numb, which is uncomfortable. However, since the four batteries 7 are accommodated in the lower portion of the main body 1, the weight is large and vibration is unlikely to occur. Therefore, the vibration is mainly concentrated on the brush portion 2 and vibrates the head 3 and the toothbrush 4 at high speed, and the vibration frequency is the same high speed vibration as the rotation speed of the motor 6.
The high-speed vibration generated from the above is efficiently transmitted to the brush section.

When high-speed vibration is obtained with a normal motor, the strong vibration of the motor causes the main body 1 and the internal battery 6 to resonate and generate high noise and noise. In this embodiment, a cushioning material is wound when the motor 6 is incorporated in the main body 1 as a resonance preventing measure. A cushioning material is also attached to the accommodation space of the battery 7. In order to prevent resonance between the battery 7 and the spring 10 and the terminal 11 of the contact terminal, the spring pressure is set strongly so that the contact pressure becomes strong. It is desirable to implement such as.

Further, when high-speed vibration is obtained with a normal motor, the motor itself generates heat and the grip of the main body 1 feels warm. Therefore, in this embodiment, as a heat countermeasure, the motor 6 and the main body are A space for heat dissipation is provided without being in close contact with the inner circumference of the portion 1. Further, the motor 6 is provided with a rib from the inner wall of the main body 1 so as to make point contact. When the motor 6 is incorporated in the main body 1, a cushioning material is wound. It is desirable to implement such as.

In the above embodiment, the required high-speed rotation is obtained by applying a voltage below the rating to the motor rated at 7V, but conversely, by applying a voltage higher than the rated voltage, the required speed is increased. It may be possible to obtain a high speed rotation.
Further, in the above embodiment, the battery is configured to use the AA type dry cell, but other types of batteries, for example, the AA type,
There is no problem even if the size is different, such as a AAA type battery, or a rechargeable battery.

[0035]

As described above, according to the present invention, a weight is attached in a state of being eccentric to the rotary shaft of the motor, and the vibration is transmitted to the toothbrush at the tip of the main body to vibrate the brush at high speed. The number of revolutions of is 17,000 per minute
Since the speed is set to 24,000 times and the brush portion vibrates at a high speed as the motor rotates at a high speed, there is an effect that old plaque on teeth and plaque on difficult-to-polish areas can be efficiently removed.

The frequency range of about 8000 to 10000 times per minute is used as an uncomfortable region where the user feels uncomfortable.
In the range in which the effect of the "sound wave region" can be obtained, the lowest region, 17,000 to 24,000 times, was used, so even though it was the minimum setting that eliminated unnecessary vibration in the too strong region, The effect of removing plaque can be obtained.

Since the vibration is not too strong, the adverse effect on the human body is reduced, and the timer required in the past is unnecessary.

Since the frequency is about twice as high as the uncomfortable region of 8000 to 10,000 times, the vibration width becomes small, and the uncomfortable region does not feel uncomfortable.

A general motor is used,
By adjusting the voltage to be supplied above or below the rated value, high-speed vibration of 17,000 to 24,000 times per minute can be obtained.
Since expensive linear motors and reversing motors are not used, it is possible to reduce costs and provide products to users at low cost.

The main body has a long cylindrical shape, the battery to be housed inside is arranged near the base of the long cylindrical shape, and the motor is arranged near the brush attaching / detaching part of the end of the long cylindrical shape. Can be concentrated on the brush portion, and tooth brushing can be performed efficiently.

Since the noise due to the resonance of the battery due to the vibration of the main body is suppressed by increasing the spring pressure of the contact terminal member of the battery, a low noise device can be obtained despite the driving at high speed vibration. It is effective.

The vibration of the high-speed vibrating toothbrush of the present invention is transmitted to the toothbrush tip through the main body. When a strong pressure is applied to the vibrating toothbrush tip, the vibration transmitted through the main body portion is canceled and the vibration amount of the toothbrush portion decreases. Since the high-speed vibrating toothbrush has strong vibration, some users may feel pain when brushing the tooth, but the high-speed vibrating toothbrush of the present invention reduces the amount of vibration when pressed strongly, so tooth brushing can be done without feeling pain. There is an effect that can be done. According to an experiment conducted by the inventor of the present invention, this phenomenon occurs even with an electric toothbrush of the type in which the same weight is used as a vibration source in a conventional toothbrush having a frequency of about 4000 to 7000 revolutions per minute.
It cannot be confirmed, and the frequency of high-speed vibration is 17 per minute.
In the high-speed vibrating tooth brush of the present invention of 000 to 24,000 times,
It is possible to experience the sensation that the amount of vibration decreases when it is pressed strongly against the teeth, which can be said to be an effect unique to the present invention.

[Brief description of drawings]

FIG. 1 is a sectional view illustrating a structure of an embodiment of a high-speed vibrating toothbrush of the present invention.

[Explanation of symbols] 1 body 2 brush section 3 heads 4 brushes 5 connection 6 motor 6b weight 7 batteries 10 springs 11 terminals

Claims (4)

[Claims] 1. A main body that accommodates a motor and a plurality of batteries that drive the motor and has a shape that can be easily gripped with one hand, and a rod-like member that is detachably attached to an end of the main body and has a toothbrush bristle at the tip. A high-speed vibration generating means is constituted by the motor and an eccentric member rotated by the motor, and the brush part is vibrated at high speed.
The frequency of high-speed vibration of the brush is 17,000 per minute
A high-speed vibrating toothbrush characterized by a high speed of 24,000 times. 2. The high-speed vibrating toothbrush according to claim 1, wherein the high-speed vibration is obtained by setting the voltage supplied to the motor to be equal to or higher than or equal to the rated voltage of the motor. 3. The main body is in the shape of a long cylinder, the battery to be housed inside is arranged near the base of the long cylinder, and the motor is arranged near the brush attaching / detaching part of the tip of the long cylinder. The high-speed vibrating toothbrush according to claim 1 or 2, wherein the vibration is concentrated on the brush portion by means of. 4. The high-speed vibrating toothbrush according to claim 1, wherein the contact terminal member in contact with the terminal of the battery has a large spring pressure for pressing the battery terminal to prevent resonance. .