JP2002172023A - Tooth brush and method for manufacture the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tooth brush at low cost, which has high cleaning effect against plaque deposited on teeth, in gaps between teeth and on borders of teeth and gums, and coloring materials deposited on teeth, and high massaging effect on gums, and, further, soft feeling touching on gums to give a user com fortable using feeling. SOLUTION: When a bristle material is planted in planting holes on the tip end of the handle of the tooth brush, bristles are planted shifted at least 1-7 mm without bending the center of the bristle material into a V-shape. The tooth brush comprising long and short bristles manufactured like this is worked by a file so that tip ends of the long bristles are tapered and simultaneously tip ends of the short bristles are made round, or the middle layer in contact with the skin for the cloths 1, 2, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush used for brushing teeth.

[0002]

2. Description of the Related Art In general, when a toothbrush is manufactured, bristles cut to a certain length before the hair is implanted in a hair implantation hole (reference numeral 3 in FIG. 1) of a handle of the toothbrush are called a bristle material. When the bristle material is implanted, the center of the bristle material is folded into a V-shape (FIG. 4), and a bristle hole is formed by sandwiching a flat line (reference numeral 2 in FIG. 4) made of a metal plate. (Reference numeral 3 in FIG. 1 and reference numeral 3 in FIG. 4). The bristle material is prevented from falling out of the flocking hole by fitting the flat wire into the flocking hole.

[0003] Assuming that the implanted bristles are defined as bristles after the bristles are implanted, the ends of the bristles are trimmed and then finished with a file with a rounded tip. This is the usual method of manufacturing a toothbrush.

[0004] During brushing, it is possible to effectively remove dental plaque and tooth coloring, effectively remove plaque in tooth gaps, effectively remove plaque in periodontal pockets, and effectively massage gums. ,
Furthermore, in order to obtain a toothbrush with excellent usability, various proposals have been made such as the shape of the handle, the material, the shape of the flocking hole, the size of the flocking hole, and the arrangement of the flocking holes.

[0005] In particular, various shapes of the tip of the toothbrush brustle material have been proposed. For example, there are "ball tip" (FIG. 5), "pointed shape" (FIG. 6), "branched" (FIG. 7), and "branched by sea island" (FIG. 8).

In addition, a single toothbrush can be used to simultaneously remove plaque from the teeth, remove coloring of teeth, remove plaque in the gap between teeth, remove plaque in periodontal pockets, and massage gums in the mouth. The above-mentioned bristle material is combined and planted.

However, these bristles must be subjected to special processing, chemical treatment, and the like, and the price of the bristles is very high, making it difficult to provide consumers with inexpensive toothbrushes.

[0008] In order to implant bristle materials of a plurality of shapes on a single toothbrush, many processing steps must be performed, and it is also difficult to provide an inexpensive toothbrush to consumers.

[0009]

When brushing teeth, plaque removal of teeth, removal of coloration of teeth, removal of plaque in tooth-to-tooth space, removal of plaque in periodontal pocket, removal of gums at the same time when brushing teeth If you can provide an inexpensive toothbrush that combines effective bristle bristle in one toothbrush so that massage can be performed, it can contribute to improvement of oral hygiene and provide a toothbrush with good usability. .

[0010]

Means for Solving the Problems When a plurality of bristles are implanted in an implanted hole at the tip of a toothbrush handle, the central portion of the bristle material is generally bent into a V-shape to implant the bristle (FIG. 4). However, in the present invention, a normal inexpensive bristle material is used, and instead of bending the center of the bristle material into a V-shape, the bristles are shifted by at least 1 mm to 7 mm (FIG. 2).

The toothbrush made of the long bristle and the short bristle thus formed is subjected to a desired bristle finish using a file. In this bristle processing, the long bristles are subjected to a pointed taper processing (reference numeral 1-a in FIG. 2), and the short bristles are subjected to processing different from the round tip processing (reference number 1-b in FIG. 2), thereby reducing the number of processing steps. I do.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 4, a general toothbrush uses a V-shaped
It is bent into a letter shape, inserted into the flocking hole 3 with the flat wire 2 as a metal plate interposed, and is planted. The horizontal length of the flat wire is formed slightly longer than the diameter of the flocking hole, and the bristle material is held by fitting the flat wire into the flocking hole. Further, the bristle bent and implanted in the V-shape is cut and cut, and the cut end is rounded with a file or the like to finish it into a toothbrush.

Thus, in the toothbrush of this embodiment,
When bending the bristle material planted in the flocking hole into a V shape, instead of bending at the center of the bristle material,
Folding is performed by shifting at least about 1 mm to about 7 mm (Fig. 2). In this manner, a toothbrush composed of a long bristle (symbol 1-a in FIG. 2) and a short bristle (symbol 1-b in FIG. 2) formed by shifting and bending the bristle material is used to form a long bristle using a file or the like. Is pointed taper processing (Fig. 2
1-a), and the short bristles are simultaneously rounded (reference 1-b in FIG. 2). Since these different tips are processed simultaneously, the number of processing steps is small, and an inexpensive toothbrush can be manufactured.

As the material of the bristle material of the present invention, nylon, polybutylene terephthalate, polypropylene and the like can be used.

When the bristle material is not bent in a V-shape from the center but is shifted and bent, the tip shape changes due to the difference in length between the long bristle and the short bristle as shown in FIG. More specifically, when the difference between the lengths of the long bristle and the short bristle is small, the tip shapes are similar, and both are close to rounded. If the difference between the lengths of the long bristle and the short bristle is large, the long bristle becomes sharper and shorter, and the short bristle does not reach the file and the rounded tip may not be formed.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the toothbrush of the present invention, the difference between the lengths of the long bristle and the short bristle is 1 mm, 2 mm, 3 mm,
FIG. 3 shows the shapes of long bristle and short bristle obtained by sanding eight types of mm, 5 mm, 6 mm, 7 mm and, for comparison, a difference of 0 mm with a file. These eight types of toothbrushes were used by a total of 10 people, 5 in their 20s, 5 in their 30s, plaque removal performance, gum massage performance, gum feel, and
Table 1 shows the results of evaluation of the bristle durability.

[0017]

[Table 1]

The relationship between the tip shape of the toothbrush and the evaluation results of plaque removal performance, gum massage performance, gum feel, and bristle durability will be described in detail. Since the toothbrush B has a small difference in length between the long bristle and the short bristle, each of the bristle tips has the same shape when sanded with a file, and the tip of the long bristle does not become sharp. Poor removal of plaque between teeth and plaque in teeth and gum pockets. However, the effect of removing plaque on the tooth surface and the effect of massaging and feeling the gums are good. This is the same reason that the toothbrush A in which the difference between the target long bristle and the short bristle is zero has a rounded tip at both long and short bristles. Toothbrush C and D
However, the plaque removal performance is good because the tip of the long bristle is sharpened to the extent that it does not stimulate the gums. With this shape, the plaque removing effect of the gap between the teeth and the plaque removing effect of the pockets of the teeth and the gums are sufficiently exhibited. In addition, since the tip of the short bristle is sufficiently rounded, it is needless to say that the gum massage effect is good. Toothbrush E with a difference of 4 mm between long bristle and short bristle
The same evaluation results as those of the toothbrushes C and D are obtained. The reason is that the tip shape of the long bristle is sharp enough not to irritate the gums, the effect of removing plaque in the gap between the teeth and the teeth, the effect of removing plaque in the pockets of the gums, and the short bristle This is because the tip shape is moderately rounded, and the gum massage effect and the gum feel are good. But,
For toothbrushes F, G, and H with a difference between long bristle and short bristle of 5 mm, 6 mm, and 7 mm, when the tip is processed with a file, the difference in length between the long and short bristles is large, and the tip shape of the long bristle is super sharp. And may irritate the gums. Also, there is a possibility that the tip of the short bristle is not sufficiently rounded. Accordingly, the evaluation results of the toothbrushes F, G, and H were inferior to those of the toothbrushes C, D, and E in terms of usability. The results showed that there was no difference in bristle durability.

Therefore, the long bristle and the short bristle are filed using a file with a difference of 1 mm to 7 mm using a file. 1-b) and the processing of different tips at the same time, the plaque removal performance, gum massaging performance, gum feel,
And the bristle durability, that is, the most effective in oral hygiene, the difference between long bristle and short bristle is 2 to 4 m
m is desirable.

[0020]

EFFECTS OF THE INVENTION During tooth brushing, plaque of teeth, removal of coloring of teeth,
It is possible to effectively remove plaque in tooth gaps, remove plaque in periodontal pockets, effectively massage gums, and provide an inexpensive toothbrush at low cost.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a toothbrush flocked portion.

FIG. 2 is an enlarged view of a toothbrush flocking hole. The bristle material is implanted according to the present invention.

FIG. 3 is a diagram showing the state of the bristle tips of long and short bristle according to the present invention.

FIG. 4 is an enlarged view of a toothbrush flocking hole. A state in which bristle material is normally planted.

FIG. 5 is an enlarged view showing a bristle having a spherical hair tip.

FIG. 6 is an enlarged view showing a bristle having a sharp hair tip.

FIG. 7 is an enlarged view showing a bristle with a branched hair tip.

FIG. 8 is an enlarged view showing a bristle whose bristles are branched in a sea-island shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bristle 1-a Long bristle according to the present invention 1-b Short bristle according to the present invention 2 Flat wire 3 Flocked hole

Claims (2)

[Claims] 1. A toothbrush having a brush handle and a large number of bristles planted on one side of the brush, wherein the bristles are one flocked hole, the length of which is longer than a certain length, and The bristles of the long bristle have a pointed taper shape.
A toothbrush with a short bristle tip with a rounded tip. 2. A flocked hole at the tip of the toothbrush handle,
When bristle material is implanted, a long bristle made by bending and bristling by shifting the bristle material by at least 7 mm from 7 mm to a V-shape and a short bristle using a file, the long bristle is tapered to a pointed tip, A method of manufacturing a toothbrush in which a bristle is simultaneously processed differently from a rounded tip, and the pointed taper shape, which is most desirable for oral hygiene at the time of tooth brushing, and a rounded shape, in which the difference between long and short bristles is 2 mm to 4 mm. 3. A toothbrush wherein the material of the bristle is formed of nylon, polyethylene terephthalate, polypropylene or the like.