JPH0576416A - Tooth-brush - Google Patents

Abstract

PURPOSE:To present a tooth-brush for enabling the tips of nylon bristles to be easily moved into adjacent contact surfaces (between teeth), without pressing a brush section strongly to the lines of the teeth. CONSTITUTION:On the base seat 3 of a brush section 2, a plurality of cylindrical recessed sections set orthogonally to the longitudinal axial direction of a shank are formed at equal intervals, and in the recessed sections, column-shaped rotary bodies 5 are respectively contained. On the peripheral surfaces of the rotary bodies 5, along the axial direction, projected strip sections 5a are formed, and they are set in a state that they are positioned at the opening sections of the recessed sections. At the opening sections of the recessed sections, contact surfaces to be positioned on both the sides are formed. At both the ends of the upper surfaces of the projected strip sections 5a, nylon bristles 6 are arranged to be vertically erected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush, and more particularly to a toothbrush structure suitable for brushing adjacent surfaces (between teeth).

[0002]

2. Description of the Related Art A conventional toothbrush, as shown in FIG.
It is composed of a flat rod-shaped handle portion 14 and a brush portion 16 in which nylon bristles 15 are vertically planted in several rows on a plane of an end portion of the handle portion 14.

[0003]

As a place where tooth decay is likely to occur, especially the adjacent surface (between the teeth 18 and 17) 17
(See FIG. 8). Currently adjacent surface 17
The so-called "push-and-shake polishing" is becoming the main method of brushing. That is, as shown in FIG. 8, first, the brush portion 16 of the toothbrush is applied to the tooth row, and the bristle tips of the nylon bristles 15 are inserted into the adjacent surface 17. When the bristle tips of the nylon bristles 15 are inserted into the adjacent surface 17, the brush portions 16 are swung laterally so that the bristle tips of the nylon bristles 15 do not come off from the adjacent surface 17 (arrow a,
B). Then, the tips of any nylon bristles 15 have an adjacent surface 1
Moves as if it moves into or out of 7 When the brush part 16 is shaken about 20 to 30 times at one place, the plaque on the adjacent surface 17 drops due to the action of the tips of the nylon bristles 15. By the way, in the above-mentioned conventional toothbrush, since the nylon bristles 15 are directly vertically planted on the flat surface of the end of the handle portion 14, in order to insert the bristle tips of the nylon bristles 15 into the adjacent surface 17, The brush part 16 must be pressed firmly against the dentition. However, when the brush portion 16 is strongly pressed against the dentition in this manner, the gingiva may be damaged by the tips of the nylon bristles 15, and that portion may become purulent. The present invention has been made in view of such a current situation, and provides a toothbrush that can easily insert the tips of nylon bristles into an adjacent surface without pressing the brush portion strongly against the dentition. It is intended.

[0004]

Therefore, according to the present invention, in a toothbrush comprising a rod-shaped handle and a brush provided at an end of the handle, the base of the brush is provided with a long handle. A plurality of columnar rotating bodies that are rotatable only within a certain range in the axial direction are provided at equal intervals, and hair is planted on both ends of the outer periphery of the rotating body. In addition, a plurality of spherical rotary bodies that can freely rotate only within a certain range are provided on the base of the brush portion at equal intervals, and the bristles are planted on the rotary bodies.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a toothbrush according to the present invention, FIG. 2 is an enlarged perspective view of a brush portion in FIG. 1, and FIG.
4 is a perspective view showing another embodiment of the toothbrush according to the present invention, FIG. 5 is a sectional view taken along line II-II of FIG. 4, and FIG.
Fig. 7 is an operation explanatory view of the nylon bristles shown in Fig. 7, Fig. 7 is a perspective view showing a conventional technique, and Fig. 8 is an explanatory view showing a brushing method of an adjacent surface.

As shown in FIGS. 1 to 3, the toothbrush A
Is composed of a flat rod-shaped handle portion 1 and a brush portion 2 provided at an end portion of the handle portion 1. The brush part 2
A plurality of cylindrical recesses 4 are formed on the pedestal 3 orthogonally to the long axis direction of the handle portion 1 at equal intervals, and a cylindrical rotating body 5 is provided in each of the recesses 4. It is housed. Here, on the peripheral surface of the rotating body 5, the ridges 5 are formed along the axial direction thereof.
a is formed, and the ridge portion 5 a is positioned at the opening of the recess 4. Further, contact surfaces 4a, 4a are formed on both sides of the opening of the recess 4 so that the protrusion 5a is brought into contact with the contact surfaces 4a, 4a. As a result, the rotating body 5 can rotate only within a certain range in the major axis direction of the handle 1. Nylon bristles 6 are vertically planted on both ends of the upper surface of the ridge portion 5a. By configuring the brush part 2 as described above, the nylon bristles 6 and 6 planted in the adjacent rotating bodies 5 and 5 are tilted by the rotation of the rotating bodies 5 and 5 so that their bristle tips come into contact with each other. Is possible (dashed line in FIG. 3).

Next, the operation of this embodiment will be described. When the brush portion 2 of the toothbrush A is applied to the dentition, the tips of the nylon bristles 6 try to slide on the surfaces of the teeth 18 (FIG. 8), whereby a rotational force acts on the rotating body 5 via the nylon bristles 6. To do. The rotation of the rotating body 5 causes the nylon bristles 6 to tilt (indicated by the one-dot chain line in FIG. 3), and the tips of the nylon bristles 6 smoothly enter the adjacent surface 17 (between the teeth 18 and 18) ( (State of FIG. 8). In this way, the tips of the nylon bristles 6 can be attached to the adjacent surface 17 by simply applying the brush portion 2 to the dentition.
Since it can be made to enter, the tip of the nylon hair 6 does not damage the gums, and as a result,
There is no risk of gingival suppuration. When the bristle tips of the nylon bristles 6 are inserted into the adjacent surface 17 as described above, the brush portion 2 is swung laterally so that the bristle tips of the nylon bristles 6 do not come off from the adjacent surface 17. Then, the tips of any of the nylon bristles 6 move in such a manner as to flex while moving into the abutting surface 17 while moving. When the brush part 2 is shaken about 20 to 30 times at one place, the nylon bristles 6
The tips of the hair drop the plaque on the adjacent surface 17.

In the above embodiment, the nylon bristles have the handle 1.
Although it is configured to incline only in the major axis direction of, the further effect can be obtained by the following configuration. That is, as shown in FIGS. 4 to 6, a plurality of spherical recesses 10 are formed on the upper surface of the pedestal 9 of the brush portion 8 at equal intervals, and each of the recesses 10 has a spherical shape. The rotating body 11 is housed. Here, the rotating body 1
A ridge 11a is formed on the outer surface of the ridge 1 in the radial direction thereof, and the ridge 11a is positioned at the opening of the recess 10. Further, a contact surface 10a is formed along the inner circumference of the opening of the recess 10 so that the ridge 11a abuts on the contact surface 10a. As a result, the rotating body 11 can freely rotate only within a certain range. The ridge 1
Nylon bristles 12 are planted in 1a. By configuring the brush portion 8 as described above, each nylon bristles 1
2 can tilt freely within a certain range (Fig. 5,
As a result, it is possible to gather the hair tips of the four adjacent nylon hairs 12 at the same time, so that the number of nylon hairs 12 entering each adjacent surface 17 increases and the brushing effect is improved.

[0009]

According to the present invention, since the toothbrush is constructed as described above, the tips of the nylon bristles are brought into contact with the adjacent surface (between the teeth) by simply applying the brush portion to the tooth row. Since it can be inserted, the gingiva is not damaged by the tips of the nylon hairs 6 and, as a result, there is no fear that the gingiva may become suppurated.

[Brief description of drawings]

FIG. 1 is a perspective view of a toothbrush according to the present invention.

FIG. 2 is an enlarged perspective view of a brush unit in FIG.

3 is a cross-sectional view taken along the line I-I of FIG.

FIG. 4 is a perspective view showing another embodiment of the toothbrush according to the present invention.

5 is a sectional view taken along line II-II of FIG.

6 is an operation explanatory view of the nylon bristles shown in FIG. 4. FIG.

FIG. 7 is a perspective view showing a conventional technique.

FIG. 8 is an explanatory diagram showing a brushing method for adjacent surfaces.

[Explanation of symbols]

 A toothbrush 1 handle part 2 brush part 3 pedestal 4 recess 4a abutting surface 5 rotating body 5a convex ridge 6 nylon bristles 8 brush part 9 pedestal 10 recess 10a abutting surface 11 rotating body 11a convex ridge 12 nylon bristles

Claims (2)

[Claims] 1. A toothbrush comprising a rod-shaped handle portion and a brush portion provided at an end portion of the handle portion, the toothbrush being rotatable on a base of the brush portion only within a certain range in a longitudinal direction of the handle portion. A toothbrush characterized in that a plurality of columnar rotating bodies are provided at equal intervals, and bristles are planted on both ends of the outer periphery of the rotating body. 2. A toothbrush comprising a rod-shaped handle portion and a brush portion provided at an end portion of the handle portion, wherein a plurality of spherical rotations freely rotatable on a base of the brush portion only within a certain range. A toothbrush characterized in that bodies are provided at equal intervals, and bristles are planted on the rotating body.