JP2002065360A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush which enables a user to clean an interdental part, a gum line, and surfaces of teeth, does not hurt gums, and makes a soft contact with teeth. SOLUTION: A toothbrush has bundles of filaments which are folded U-shaped and are embedded in holes for bristles on a brush head. The filament has an end divided into more than two and the other end tapered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush in which a bristle bundle of a filament is bent into a U-shape and implanted. More specifically, the one end of the filament is divided into two or more, and the other end is tapered. The present invention relates to a toothbrush made of a processed filament.

[0002]

2. Description of the Related Art Conventionally, one end of a filament has a tapered shape and the other end has a non-tapered shape.
Alternatively, a toothbrush having a spherical portion formed at the tip is known. In this type of toothbrush, for example,
Japanese Patent Publication No. -10495 discloses a toothbrush in which a tapered filament and a non-tapered filament are bent and implanted in a U-shape. In addition, Japanese Patent Application Laid-Open
Japanese Patent No. 2874412 describes a toothbrush in which one end of a filament is tapered and the other end is spherical. Compared with the toothbrush described in Japanese Utility Model Publication No. 61-10495, this toothbrush does not damage the gum because the non-tapered end has a spherical shape having a massage effect on the gum.

[0003]

Problems to be Solved by the Invention
The toothbrush described in Japanese Patent No. 495 is good for cleaning the interdental part and the cervical part, but the non-tapered part damages the gums and the contact area with the tooth is smaller than that of the toothbrush 100% cut. There was a problem that the cleaning effect on the tooth surface was reduced due to the decrease. Further, the toothbrush described in Japanese Patent Application Laid-Open No. 7-2874412 has a room for improvement such that the contact area with the teeth is smaller and the cleaning effect on the tooth surface is lower than the toothbrush combining the tapered and non-tapered shapes. It was something with Based on the above viewpoints, the present invention is to provide a soft-touch toothbrush that does not damage the gums and cleans the interdental region, the boundary between the teeth and the gums, and the surface of the teeth.

[0004]

According to the present invention, there is provided a toothbrush in which a bundle of filaments is bent and implanted in a U-shape in a flocking hole of a brush head, wherein the filament has one or more tips at one end. The gist of the present invention is characterized in that the toothbrush is divided and the other end is tapered.

[0005]

The toothbrush according to the present invention can simultaneously perform brushing according to the shape of both ends of the filament during use. In addition, the filament is divided into two or more ends at one end, and the other end is formed in a tapered shape, so that the tip divided into two or more cleans the tooth surface without damaging the gingiva, The tapered tip simultaneously performs the function of removing plaque accumulated in the periodontal pocket.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. <Embodiment 1> FIGS. 1 and 2 show Embodiment 1 of the present invention. FIG. 1 shows an embodiment of the filament 1. The filament 1 has one end 1a obtained by dividing one end of a synthetic resin fiber into two or more, and the other end 1b formed into a tapered shape. As the material of the synthetic resin used for the filament 1, polyamide (6,6-nylon,
6-nylon, 12-nylon, 6,10-nylon,
6,12-nylon), polyester (polyethylene terephthalate, polybutylene terephthalate, etc.), acrylic (polyacryl, polyacrylonitrile, acrylonitrile-styrene copolymer, acrylonitrile-
Butadiene-styrene copolymer). The length and thickness of the filament vary depending on the object to be used (whether the toothbrush is for an adult or for a child), but is generally 9.0 mm to 13.0 mm, and the thickness is 1.2 mm. It is preferable that the thickness is about 2.4 mm.

[0007] As a method of forming the filament 1, first, if it is appropriately cut to a length, and if the tip portion is tapered, it is melted by a chemical treatment to form a tapered portion, and the tip portion is reduced to two or more. If splitting, the fibers are beaten and split to form split fibers. However, the molding method is not limited to this, and other known techniques can also be adopted. In addition, the dimension of the tapered portion is 1.0 mm to 7.0 m.
m is preferable. The dimension of the division is 0.1 mm
It is preferably about 2.0 mm, and the dividing part is preferably divided into 2 to 20 pieces.

Next, FIG. 2 shows the installation of the filament 1 on the brush head 2. The brush head 2
A thermoplastic resin such as polypropylene, acrylic resin, or polyester is formed by a method such as injection molding. A grip portion (not shown) of the toothbrush is integrally provided on a side surface of the brush head 2. A plurality of flocked holes 3 are formed in advance in the brush head 2. This flocking hole 3
Then, the bent portion of the filament bundle 4 is driven into the plant with a locking piece such as a wire. At this time, as shown in FIG. 3, the filament bundle 4 is divided into two or more parts from the center of the filament so that the end of the tapered filament is longer than the other two parts. It can also be bent and planted in a U-shape. By doing so, the tip of the tapered portion easily enters the periodontal pocket, and plaque can be more effectively removed. Also,
A function such as a tooth surface cleaning effect can be obtained at the same time without damaging the gingiva due to the two or more divided tips.

Second Embodiment FIG. 4 shows a second embodiment of the present invention. In the second embodiment, the filament bundle 4 in the first embodiment is used.
Was performed in the same manner as in Example 1 except that the filament bundle 14 was implanted so that the tapered end 11b was located outside the longitudinal direction of the brush head and the divided end 11a was located inside. Things. In the toothbrush according to the second embodiment, since the tapered end portion 11b is on the outside, the tip of the tapered portion is easily inserted into the periodontal pocket, and plaque can be more effectively removed.

Third Embodiment FIG. 5 shows a third embodiment of the present invention. In Example 3, the filament 1 in Example 1 was used.
This is the same as the first embodiment except that the filament 21 has four communication holes 21a inside. The filament 21 of the third embodiment is the same as the filament 1 of the first embodiment.
Since there is a portion having a smaller thickness as compared with the above, the portion having the smaller thickness is broken when hit during processing, and the filament is divided evenly.

[0011]

According to the toothbrush according to the present invention having the above-described structure, the plaque accumulated in the periodontal pocket can be removed in the tapered shape, and the gingiva can be reduced in the shape divided into two or more. It is an extremely effective one that can simultaneously obtain an excellent effect of cleaning the tooth surface without damaging it.

[Brief description of the drawings]

FIG. 1 is a partially broken front view of a filament used in a toothbrush of the present invention.

FIG. 2 is a cross-sectional view of Embodiment 1 of the present invention.

FIG. 3 is a front view showing an example of a case where a filament is implanted.

FIG. 4 is a cross-sectional view of Embodiment 2 of the present invention.

FIG. 5 is a cross-sectional view of a filament used in Example 3.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filament 1a End part divided into two or more 1b Tapered end part 2 Brush head 3 Flocking hole 4 Filament bundle

Claims (3)

[Claims] 1. A toothbrush in which a bristle bundle of a filament is implanted in a flocking hole of a brush head by bending the bundle into a U-shape, wherein the filament has one end divided into two or more ends. A toothbrush having an end tapered. 2. The toothbrush according to claim 1, wherein the tapered end of the filament is implanted so as to project from two or more divided ends of the other end. 3. The toothbrush according to claim 1, wherein the filament has one or more communication holes in a longitudinal direction.