JP2003093157A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush which can effectively brush a fine part such as a gap between teeth, a border between a tooth and a gum, etc. SOLUTION: This toothbrush 10 has a plurality of bristle bundles 12a, 12b planted in a bristle planting base 14. Three outer bristle bundles 12a with a radius r at the root parts are respectively planted each placed at corners of an equilateral triangle in a circular area S equipped on the bristle planting base 14 and an interval L between peripheries 13 of each pair of neighboring outer bristle bundles 12a of three outer bristle bundles 12a is set 0.3-0.6 mm. Three circular exclusive areas S' with a radius R of [r+(L/2)] making the center of each outer bristle bundle 12a the axis and drawn, and circles drawn circumscribing the three area S' are made the circular area S to make the rate of the total section area of the three bristle bundles 12a against the area of the circular area S 0.10-0.28.

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 plurality of bristles, which are formed by bundling a plurality of bristles, are planted on a bristling table.

[0002]

PRIOR ART AND PROBLEMS TO BE SOLVED BY THE INVENTION Between teeth,
As a toothbrush with improved masticatory surfaces of molars, boundaries between teeth and gums, and recesses such as corners formed between teeth and gums, for example, Japanese Utility Model Laid-Open No. 63-166042 discloses a flocking table. Occupancy A of the total brush bundle area in the flocking area
(%) (= Area of one brush bundle x number of hairs / area of flocked area x
100 (%) is 10 to 18%, and the ratio of the total cross-sectional area of bristles to the cross-sectional area of one brush bundle is 30.
A toothbrush made up to ~ 70% is described.

However, even if the brush bundle is planted on the flocking table so that the occupancy A of the total brush bundle area is within the predetermined range, thick brush bundles may be sparsely planted and thin brush bundles may be densely packed. Since the brushing efficiency and the feeling of brushing are different from those when the hair is transplanted, in order to effectively brush the fine parts such as the space between the teeth and the boundary between the teeth and the toothbrush,
It is necessary to plant the bristles in association with each other so that the thickness, arrangement interval, and bristling density of the bristles have a predetermined relationship.

According to the present invention, the brush bundle is planted by defining the relationship among the thickness of the brush bundle, the arrangement interval, and the planting density, so that the fine portion such as the boundary between the teeth or the boundary between the teeth and the gum can be effectively treated. It is an object of the present invention to provide a toothbrush that can be brushed to other parts and has a soft tooth contact and an excellent feeling of brushing.

[0005]

According to the present invention, in a toothbrush in which a plurality of bristles formed by bundling a plurality of bristles are flocked on a flocking table, a toothbrush is provided in a circular region S provided on at least a part of the flocking table. In the root part, three or four brush bundles having a radius of r are arranged such that they are located at the corners of an equilateral triangle or a square, and the bristles are respectively planted.
The distance L between the peripheral edges of each pair of adjacent brush bundles of four or four brush bundles is 0.3 to 0.6 mm, and the center of each brush bundle is the axis [r + (L / 2) ] The radius R is three or four circular exclusive regions S ′ are drawn respectively, and the circles circumscribing these are drawn as the circular regions S, and the three or four circular regions S with respect to the area of the circular regions S are drawn. The above object is achieved by providing a toothbrush in which the ratio of the total cross-sectional area at the root of the brush bundle is 0.10 to 0.28.

The circular region S in the above description can be appropriately provided at a position suitable for brushing the boundary between the teeth or between the teeth and the gum, such as the tip or side of the flocking table. Within the circular region S, it is sufficient that the three or four brush bundles planted on the flocking table satisfy the above conditions. The circular regions S can be provided at one or a plurality of positions on the flocking table, and in the adjacent circular regions S, the circular regions S may partially overlap each other. The circular area S is
It is preferable that a plurality of flocking tables are provided so that the area occupied by the circular region S occupies 10% or more of the flocking table. When the area occupied by the circular area S occupies 10% or more of the flocking table, it is possible to obtain an excellent brushing feeling with a soft tooth contact. Further, all of the brush bundles to be transplanted on the hair transplantation table are arranged in the circular region S 3
It is particularly preferable to implant hair in a bundle of four or four brushes.

The radius r of the brush bundle at the root portion is the radius of the shape of the peripheral edge of the brush bundle, which is an imaginary shape in which the outermost peripheral portion of the outermost bristle is connected in the circumferential direction so as to form a smooth ring shape. And is generally the same as the radius of the flock hole in which the bristles are flocked. Also, the radius r of the brush bundle is
When the shape of the peripheral edge of the brush bundle is not circular, it means the cross-sectional secondary radius of the peripheral edge shape. Further, the interval L between the peripheral edges of the pair of brush bundles means the interval of the portions where the peripheral edges of the pair of brush bundles are closest to each other.

The circular exclusion area S'is a circular area drawn around the center (axis) of the brush bundle so that adjacent circular exclusion areas S'do not overlap each other. The cross-sectional area at the root of the brush bundle is the area of the peripheral edge shape at the root of the brush bundle.

Further, according to the toothbrush of the present invention, three or four brush bundles having a radius r at the root portion, which is planted on at least a part of the flocking table, are located at the corners of an equilateral triangle or a square. And the distance L between the peripheral edges of each pair of adjacent brush bundles is 0.3 to 0.6 mm, and the center of each brush bundle is the axis [r +
(L / 2)] as a radius R, three or four circular exclusive areas S ′ are drawn, and a circle circumscribing these is drawn as a circular area S.
The ratio of the total cross-sectional area at the roots of the three or four brush bundles to the area of the circular region S is 0.10.
Since it is set to ~ 0.28, in the portion where such three or four brush bundles are combined, the brush bundles having a relatively small radius are evenly distributed and the hairs are planted at appropriate intervals. As a result, it is possible to effectively clean a fine portion such as a boundary between the teeth and a boundary between the teeth and the gum, and it is also possible to obtain an excellent cleaning feeling with a soft tooth contact.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIGS. 1 (a) and 1 (b), a toothbrush 10 according to a first preferred embodiment of the present invention connects a gripping portion (not shown), a hair transplant base 14, and these. A plurality of brush bundles (tufts) 12a, 12b formed by bundling a plurality of bristles 11a, 11b are planted on a bristling table 14 of the toothbrush body, which is composed of a neck portion 15.

Further, according to the toothbrush 10 of the present embodiment, as shown in FIG. 2, the radius at the root portion is provided in each of the plurality of circular regions S provided along the outer portion of the bristle implanting base 14. 3 outer brush bundles 12a of r are arranged and positioned so as to be positioned at the corners of an equilateral triangle, and each pair of adjacent outer brush bundles of these 3 outer brush bundles 12a. The distance L between the peripheral edges 13 of 12a is 0.3.
˜0.6 mm, and draw three circular exclusive areas S ′ having a radius R of [r + (L / 2)] with the center of each outer brush bundle 12a as an axis, and circumscribe them. The circle drawn is defined as the circular area S, and the ratio A of the total cross-sectional area at the roots of the three outer brush bundles 12a to the area of the circular area S is 0.10 to 0.28.

The toothbrush body is made of polypropylene,
It is made of a synthetic resin such as ABS resin, and a plurality of small-diameter circular outer flocked holes 16a are formed in the outer part of the flocked table 14 on the surface of the flocked table 14, and the inner part has a diameter of 1.6 to A large diameter circular flock hole with a diameter of about 2.2 mm 1
A plurality of 6b are formed. Further, the outer brush bundle 12a is planted in the circular outer tuft hole 16a, and the inner brush bundle 12b is planted in the circular inner tuft hole 16b by, for example, fusion splicing.

The bristle 1 which constitutes the outer brush bundle 12a
1a is a filament material made of synthetic resin such as nylon and has a cylindrical shape having a circular cross section with a diameter of, for example, about 0.1 to 0.3 mm. The outer brush bundle 12a is formed by bundling. The outer brush bundle 12a has, for example, 8.0 to 12.
The hair is planted on the hair transplantation table 14 with a hair length of about 0 mm.

The bristles 1 forming the inner brush bundle 12b
1b is a filament material also made of synthetic resin such as nylon, and has a cylindrical shape having a circular cross section with a diameter of, for example, about 0.1 to 0.3 mm. Inner brush bundle 12 by bundling 100 bundles
b is formed. The inner brush bundle 12b is also, for example, 8.
The hair is planted on the hair transplantation table 14 with a hair length of about 0 to 12.0 mm.

According to the present embodiment, a plurality of circular areas S are provided along the outer side portion of the hair transplant table 14, and each circular area S has three outer brush bundles as shown in FIG. 12
a is arranged so as to be located at the corner of the equilateral triangle, and the hairs are respectively transplanted. Here, the radius r at the root of the outer brush bundle 12a matches the shape of the circular outer bristles 16a, and the circular peripheral edge 13 at the root of the outer brush bundle 12a.
Means the radius of.

According to the present embodiment, as shown in FIG. 3, in each circular area S, four outer brush bundles 12a having a radius of r at the root are located at the corners of a square. It is also possible to arrange hair transplants in each of the above and transplant hair.

According to the toothbrush 10 of this embodiment, three or four outer brush bundles 12a each having a radius r at the root portion of the bristles 14 on the outer portion of the bristle stand 14 are equilateral triangles or square corners. Are arranged so as to be located in a section, and the interval L between the peripheral edges 13 of each pair of adjacent outer brush bundles 12a is 0.3 to 0.6 mm, and the center of each outer brush bundle 12a. [R + (L
/ 2)] has a radius R of three or four circular exclusive regions S ′, and a circle circumscribing these is defined as a circular region S, and three or four circular exclusion regions S with respect to the area of the circular region S are drawn. Since the ratio A of the total cross-sectional area at the root portion of the outer brush bundle 12a is set to 0.10 to 0.28, in the portion where such three or four outer brush bundles 12a are combined, an appropriate space is provided. And each outer brush bundle 1 with a relatively small radius r
2a is evenly distributed and flocked, which makes it possible to effectively clean fine parts such as the boundary between the teeth and the boundary between the teeth and the gum, and the softness of contact with the teeth is excellent. It is possible to obtain a feeling of brushing.

Further, according to the toothbrush 10 of the present embodiment, a plurality of circular regions S are provided along the outer portion of the flocking table 14 with some of them overlapping with each other. The area occupied by S is 50% of the flocking table
Since it occupies the above area, it is possible to efficiently brush the boundary between the teeth and the gums with normal brushing without being aware of it, and it is possible to massage the gums effectively. Become.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, as shown in FIG. 4, all of the bristles bundled on the bristles may be three or four bristles arranged in the circular region S, and as shown in FIG. The circular area S in which the brush bundle of the book is arranged can be provided only at one place. The bristles do not necessarily have to be flocked by the fusing and flocking method, but may be flocked by other methods such as the flat-line flocking method.

[0020]

EFFECTS OF THE INVENTION According to the toothbrush of the present invention, by setting the relationship between the thickness of brush bristles, the arrangement interval, and the bristling density, and flocking the bunch of bristles, the boundary between the teeth or the boundary between the teeth and the gum can be obtained. The fine parts of can be effectively cleaned.

[Brief description of drawings]

FIG. 1 is a side view and (b) is a plan view showing essential parts of a toothbrush according to an embodiment of the present invention.

FIG. 2 is a plan view illustrating a circular area S in which three brush bundles are arranged.

FIG. 3 is a plan view illustrating a circular area S in which a bundle of four brushes is arranged.

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

FIG. 5 is a plan view showing a main part of a toothbrush according to yet another embodiment of the present invention.

[Explanation of symbols]

10 Toothbrushes 11a, 11b Bristle 12a Outer brush bundle 12b Inner brush bundle 13 Outer brush bundle periphery 14 Brush stand 15 Neck 16a Outer circular brush hole 16b Inner circular brush hole A Ratio of the total cross-sectional area of the brush bundle to the area of the circular region L Interval r between peripheral edges of a pair of brush bundles Radius R at the root of the outer brush bundle R Radius S of circular exclusion area S Circular area S ′ Circular exclusion area

Claims (3)

[Claims] 1. A toothbrush in which a plurality of bristles formed by bundling a plurality of bristles are flocked on a flocking table. In a circular region S provided in at least a part of the flocking table, a radius at a root portion is r. 3 or 4 brush bundles are arranged so as to be positioned at the corners of an equilateral triangle or a square, and are each bristled, and a pair of adjacent brush bundles of the 3 or 4 brush bundles. The distance L between the edges is 0.3
.About.0.6 mm, and draw three or four circular exclusion areas S ′ each having a radius R of [r + (L / 2)] with the center of each brush bundle as an axis, and circumscribe them. The circle drawn is defined as the circular area S, and the ratio of the total cross-sectional area at the roots of the three or four brush bundles to the area of the circular area S is 0.10 to 0.10.
A toothbrush that is 0.28. 2. A plurality of the circular areas S in which the three or four bristles are arranged are provided on the hair transplantation table, and an area occupied by the plurality of circular areas S is 10% or more of the hair transplantation table. The toothbrush according to claim 1, occupying an area. 3. The toothbrush according to claim 2, wherein all the bristles bundled on the bristles are three or four bristles arranged in the circular region S.