JPS6045362A - Electric toothbrush - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric toothbrush that treats and prevents dental diseases such as alveolar pyorrhea by applying electricity.

There is an electric therapy device used by dentists to treat alveolar pyorrhea, which the patient holds in their hand and applies the tip to the affected area.The principle of this device is the same as that of the toothbrush of the present invention, and electricity is passed to the affected area. Its therapeutic effects have already been recognized.

However, since this treatment needs to be continued over a long period of time, it is difficult for the average person to go to the hospital, and important teeth often have to be extracted.

In the past, a toothbrush that applied the principle of this treatment device was commercially available.

This toothbrush has a dry battery housed inside its handle, a current-carrying element in contact with one electrode exposed in the grip part, and a front electrical path exposed from the other electrode to the brush part at the tip. During use, the energized body in the grip may come into contact with your hand,
A circuit is formed between the front electrical circuit exposed in the brush part and the human body through moisture during the day, which sterilizes the teeth, gums, and oral cavity, and promotes blood circulation to the gums, etc., and has the effect of giving vitality. It was something.

However, with this conventional toothbrush, the toothbrush remains wet after use, and when it is placed in the toothbrush holder, the tip of the toothbrush is always facing upwards, so the water contained in the brush drips onto the handle, causing the grip to become wet. Since the current-carrying body of the battery gets wet, this moisture forms a circuit connecting the exposed part of the front electrical circuit and the current-carrying body, and the battery is consumed until the water completely dries, which shortens the life of the battery. Electric toothbrushes, which were uneconomical and effective, were unpopular, and production was finally discontinued, dooming them to disappear from the market.

The inventor himself was suffering from alveolar pyorrhea and was pleased to find that it was effective after using this electric toothbrush. I had been using these batteries for a long time, but I was very disappointed that their production had been discontinued, so I researched various ways to make dry batteries last longer, and as a result, I completed the present invention.

The configuration of the invented product will be explained below.

A DC power source such as a dry cell battery is removably housed in the handle of the toothbrush, and the current-carrying body in contact with one electrode (assumed to be the negative pole) of the DC power source is exposed in the grip of the handle, and the other electrode (assumed to be the negative pole) is exposed in the handle. A switch device that can be opened and closed inside the handle is installed in the middle of the front electric circuit exposed to the brush portion at the tip, and a switch device that can be opened and closed inside the handle is installed in a part of the handle that avoids the current-carrying body in order to open and close the switch device. A press-fitting part is provided that is depressed by grip force, and the switch device, which is normally cut off, is repeatedly turned on and off depending on the size of the depression in the press-fit part due to changes in grip force during use.

A description will be given below based on the attached drawings illustrating embodiments.

(1) is a handle, and a DC power source (2) (dry battery) is housed inside the rear end of the handle so that it can be taken in and out using a cap (3) at the rear end of the handle (1).

(4) is a current-carrying body which is in contact with the (C) pole of the DC power source (2) and is exposed on a part of the outer periphery of the cap (3).

(5) is the front electric circuit, which is the second electric circuit built into the handle (1).
The tip-side front electrical path (see details in the figure) from the switch device (6) to the exposed portion (8) exposed by the brush portion (7) at the tip.
5a) and the switch device (6) to the DC power supply (2) (
g) a power supply side front electrical circuit (5b) connected to the pole;

(9) is a press-fitting part, which closes the opening of the space θQ provided in the part of the handle (1) that avoids the current-carrying body (4), and bulges outward with a thin and elastic material that is dented by grip force. The tip side front electric circuit (5a) is provided inside this press-fitting part (9).
) is attached with a cylindrical switch movable body (6a) whose contact point α is exposed on the inner surface of the cylindrical hole, while a cylindrical switch fixed body (6b) protrudes into the space α1 inside the cylindrical hole (1). teeth,
It is inserted into the cylindrical hole of the switch movable body (6a), and a DC power supply (
Parallel contacts 0→ of several stages are provided to which the power supply side front electric circuit (5b) in contact with the (G) pole of 2) is connected, and this parallel contact OJ is connected to the aforementioned tip side front electric circuit (5a). ), and when not in use, a spring θυ fitted around the outer periphery of the switch movable body (6a) pushes the press-fit part (9) outward and bulges out. When the press-fit part (9) bulges out as shown in Figure 2,
The front electric circuit (5b) on the tip side is disconnected by this switch device (6), and when the press-fitting part (9) is dented by grip force during use, the switch movable body (6a) presses the spring (1]). When the contact (6) is pushed down, it comes into contact with or separates from one of the parallel contacts (2) and connects to the front electric circuit (5).
) are constructed so that they can pass or break.

With the configuration described above, the present invention has the front electric circuit (5) disconnected when not in use, but when in use, by gripping the handle (1), the press-fitting part (9) is pressed and does not become dented. ), the front electric circuit is turned on and off depending on the strength of the grip, and when the switch device (6) is turned on, the electric current is transferred from the hand touching the current-carrying body (4) to the arm and through saliva and moisture during the day. As a result, an electric circuit is formed from the exposed part (7) of the distal front electric circuit (5a) to the power source, and since the grip force on the handle changes constantly during tooth brushing, the switch device (6 ), this electrical circuit will repeatedly turn on and off.

Therefore, electricity is repeatedly connected and disconnected to the teeth and gums, and at the moment electricity is connected, a large current flows and can give strong stimulation to the teeth and gums, so it is necessary to repeatedly turn on and off in this way. According to
The treatment effect for dental problems such as pyorrhea is greater than the conventional method of continuously applying electricity, and the prevention and treatment of dental diseases can be done naturally every time you brush your teeth. can be kept healthy.

When the toothbrush is not in use, even if the toothbrush is wet, the front electric circuit (5) is cut off internally, so no electric circuit is formed and the DC power source (2) is not consumed.

Assuming that the DC power supply (2) uses a dry cell battery that has a lifespan of 24 hours, conventional batteries could only be used for 2 to 3 days due to water discharge, but according to this proposal, it can be used for 24 x 60 minutes - 14 hours.
If it lasts for 40 minutes and the average time for brushing your teeth is 3 minutes, then 1440 ÷ 3 = 480, that is, one dry cell battery costs 480
If you brush your teeth once a day, you can use it for about 1 year and 4 months, and if you use it twice a day, you can use it for about 7 months, so the battery consumption is extremely small.

Furthermore, since this product uses low DC voltage, you won't feel any pain during actual use, so you won't know if the dry cell battery is exhausted or not.

Therefore, it is convenient to use a voltage detection case a→ shown in FIG. 3 which serves both as a voltage detector and a case.

This voltage detection case 0 → is the brush part (7) of the electric toothbrush.
When the current carrying body (4) and the exposed part (7) at the tip of the brush part come into contact with each other, there is a contact part a (l), and between them there is a voltage detection path (to is configured, so when you press the press-fit part (9), the front electric circuit (
5) is connected and the DC power source (2) is functioning, the pilot lamp will light up, making it easy to know whether the DC power source (2) is functioning.

Further, although the brush portion at the tip is not shown, if it is constructed so that it can be replaced in a cassette type, it can be easily replaced when worn out, which is economical.

As stated above, this invention eliminates the drawbacks of conventional electric toothbrushes, completely prevents unnecessary consumption of power, is economical for long-term use, and is Electricity flows intermittently through changes in grip strength, which further intensifies the stimulation and strengthens the sterilizing power.The therapeutic and preventive effects are comparable to those of dentists, and can be obtained naturally through daily routine actions. , it is possible to provide an extremely excellent electric toothbrush that has a wonderful effect on protecting dental health, which is a problem for all humankind, and brings great good news to many people with poor teeth.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, FIG. 2 is an enlarged detailed view of the switch device portion of FIG. 1, and FIG. 3 is a cutaway plan view showing the voltage detection case. 1...Handle 2...DC power supply 3...Cap 4
... Current-carrying body 5 ... Front electric circuit 6 ... Switch device 7 ... Brush part 8 ... Exposed part 9 ... Press-fitting part Patent applicant: Tabe Imoto) 1 Fig. 1 Fig. 2

Claims (1)

[Claims] A toothbrush is used by storing a DC power supply inside the handle, exposing the current-carrying body that contacts one electrode of the DC power supply to the grip of the handle, and exposing the front electrical circuit that contacts the other electrode to the brush part at the tip. In an electric toothbrush in which a circuit is formed between the hand and the oral cavity, a switch device that can be opened and closed inside the handle is incorporated in the middle of the front electric circuit, and in order to open and close the switch device, the above-mentioned energization of the handle is installed. A recessed part that is recessed by the grip force is provided in a part that avoids the body, and the switch device, which is normally disconnected, is repeatedly turned on and off depending on the size of the recess in the press-fitted part due to changes in grip force during use. electric toothbrush.