JPH05192415A - Electronic power tooth brush - Google Patents

Abstract

PURPOSE:To facilitate the diffusion to the general public of an electronic power tooth brush which has higher effects for the removal of bacterial plaque and for the permeation of fluorine into tooth and the like by a high potential difference at a low cost with a smaller size in the simplest manner. CONSTITUTION:A battery hole 11 is formed at a base end of a handle 1 extending axially and a small-diameter cylindrical battery 4 is housed into the battery hole. A terminal 3 connected to one electrode of the battery is mounted partially on the outer circumference of the handle. An electroconductive axis 5 connected to the other electrode of the battery is buried being extended in the direction of an axis line of the handle to be terminated near bristles 2. The terminated part of the electroconductive axis is made to communicate near a bristle planted surface through a liquid path 8.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to electronic power toothbrushes.

[0002]

2. Description of the Related Art Conventionally, there has been a type of electronic power toothbrush in which the battery can be replaced with a metal pipe or the like in the handle portion. And structural complexity,
The cost was high and the size was considerably larger than that of an ordinary toothbrush. For example, as such a conventional example, Japanese Patent Publication No. 48-2
7390, Japanese Examined Patent Publication No. 48-15912, Shokai No. 50-58
973, Japanese Patent Publication No. 45-23984, and No. 55-116.
525, S. 54-91969, S. 53-646.
54, Actual Development Sho 59-8626, Actual Development Sho 55-16384
6, actual exploitation 49-32494, actual exploitation 48-2066
9, Japanese Examined Japanese Patent Publication No. 52-90361, Japanese Utility Model Publication No. 48-2067
0, Japanese Utility Model Publication No. 47-28168 and the like.

[0003]

SUMMARY OF THE INVENTION The present invention solves the drawbacks of the above-mentioned prior art, such as structural complexity, high cost, large size, and low potential difference, and is the simplest, low cost, small size, and high potential difference tooth. It is intended to facilitate the popularization of electronic power toothbrushes, which are highly effective in removing dust and permeating fluorine into teeth.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a battery hole having an axially extending shape is formed at the base end of a handle, and a battery having a small diameter column is housed in the battery hole. The connected terminal is attached to a part of the outer circumference of the handle, and the conductive shaft connected to the other electrode of the battery extends in the axial direction of the handle and terminates in the vicinity of the brush bristles. Is communicated with the vicinity of the brush-implanted surface via a liquid path.

[0005]

When the tooth is brushed with the electronic power toothbrush of the present invention, an electrical closed circuit is formed when saliva is stored in the fluid passage adjacent to the brush-implanted portion, and the hand holding the handle is connected to the terminal (+).
An electric current flows and the tooth becomes (+) charged through the body. Since the plaque attached to the tooth is (+), it repels the tooth (+) and is attracted to the brush bristle (-) side together with the brushing effect. When using a dentifrice containing fluorine,
It enhances the penetration effect of fluorine into teeth.

[0006]

1 to 3 show an embodiment of the present invention, the overall shape of which is substantially the same as the ordinary toothbrush and has the same dimensions. In the figure, 1 is a handle, 2 is a brush bristle, and the toothbrush body including the handle 1 is formed of a synthetic resin material. A battery hole 11 is formed from the base end side of the handle 1 along the axial direction, and the small-diameter cylindrical battery 4 is inserted into the battery hole 11 from the base end side. In this embodiment, the battery 4 is a 3V pin-type lithium battery, and in particular, two batteries are connected in series and inserted to provide a 6V power source. The + pole of this battery 4 is connected to the terminal 3 via the spring 6. The terminal 3 has a substantially U-shape corresponding to the rectangular cross section of the handle 1, and is made of, for example, a stainless material. When the terminal 3 is mounted from the base end of the handle 1, an O-ring 7 is interposed between the terminal 3 and the base end of the handle 1 to improve the sealing performance of the battery 4. More specifically, the distal ends of the terminals 3 have elastic forces biased inward toward each other. When the terminals 3 are assembled from the base end of the handle 1 and pushed in the distal direction, they are formed at the distal ends of the terminals 3. The bent portion is fitted into the support groove 12 of the handle 1 with a moderation, and the terminal mounting is completed. At this time, the O-ring 7 is slightly pressed and deformed by the inner surface of the terminal 3 to seal the battery 4 in a watertight manner.

Reference numeral 5 denotes a conductive shaft, which is embedded in the handle 1 on the head side so as to extend in the axial direction. The base end of the conductive shaft 5 is a protruding end 10 protruding into the battery hole 11 and is connected to one pole of the battery 4. On the other hand, the tip of the conductive shaft 5 ends near the brush bristles. The tip of the conductive shaft 5 communicates with the brush-implanted surface side via a pool 8 forming a liquid path. Reference numeral 9 is a groove for making it easier for saliva to flow from the bristles into the pool 8, but it is not essential. Reference numeral 13 is a small hole formed on the side opposite to the pool 8 and reference numeral 15 is a drainage flange, which prevents charged saliva and the like near the pool 8 from being short-circuited with the terminal 3 as much as possible.

The conductive shaft 5 is integrally insert-molded when the handle 1 is molded. That is, since the base end side of the conductive shaft 5 projects and the end part 10 projects into the battery hole 11, it is inserted into and supported by the slide shaft upper end part hole of the mold for the battery hole 11 at the time of molding, and the tip end side is the pool. 8 and a die pin for forming the small hole 13, whereby the conductive shaft 5 is insert-molded integrally with the handle 1 extremely easily and accurately.

In the electronic power toothbrush thus constructed, when the handle 1 is held in the hand and the brush bristles 2 are put in the mouth to brush the teeth, the saliva in the mouth wets the brush bristles 2 and the saliva is pooled. The saliva in the brush bristles 2 and the saliva in the pool become integrated. When the hand touches the terminal 3, a closed circuit of the terminal → hand → body → teeth → brush hair → pool → conductive shaft → battery → terminal is formed,
By the action of the known electronic toothbrush, plaque is efficiently removed from the tooth, and when a dentifrice containing fluorine is used, fluorine efficiently penetrates into the tooth, which contributes to the prevention of dental diseases.

In this embodiment, even if two pin-type lithium batteries are used in series, the thickness of the handle 1 does not increase, the handling is no different from that of an ordinary toothbrush, and it is easy for children to use. can do. Also, 3V
Since two batteries are used, a potential difference of 6V can be provided, and it is possible to overcome the resistance when electricity passes through the body and to exert a sufficient effect of the electronic toothbrush. Further, the terminal 3 has a U-shaped cross section and is mounted so as to be housed in flat grooves 14 formed on both surfaces of the handle 1 as shown in FIG. It is possible to make it thin or small so that it is almost the same as the size of the handle.

In this embodiment, two pin type batteries are connected in series. However, one battery may be connected or three or more batteries may be connected in series. It is necessary to increase the size, and the handleability is extremely good.

[0012]

As described above, according to the present invention,
With the shape and size of an ordinary toothbrush and the extremely simple structure, it is possible to achieve the effect of removing plaque by the electronic toothbrush, and it has an excellent effect of greatly contributing to the prevention of tooth diseases.

[0013]

[Brief description of drawings]

FIG. 1 is a sectional view of an electric power toothbrush according to the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a side view of the same embodiment.

4 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Handle 2 Brush hair 3 Terminal 4 Battery 5 Conductive shaft 8 Pool

Claims (1)

[Claims] 1. A battery hole having an axially extending shape is formed at a base end of a handle, and a battery having a small diameter column is housed in the battery hole, and a terminal connected to one electrode of the battery is a part of the handle. A conductive shaft mounted on the outer periphery and connected to the other electrode of the battery is embedded and extended in the axial direction of the handle and terminates near the brush bristles,
An electronic power toothbrush in which the end portion of the conductive shaft communicates with the vicinity of the brush-implanted surface via a liquid path.