JP2003019030A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush which improves the accessibility of bristles to spacings, such as interdental areas, etc., by narrowing the width in the minor axis direction of tips which is a brushing direction and enables a user to carry out stable brushing by securely supporting brushing force at the roots. SOLUTION: The toothbrush 10 formed by flocking a plurality of the tufts 12 constituted by bundling the bristles 11 to a bristle head 14 has the tufts 12 of which the tips 17 have a transversely long and flat sectional shape having the major axis and minor axis of an ellipse, etc., and in which the width in the major axis direction X of the tips 17 is longer than the width of the same direction X' as the major axis direction X at the roots 16 and the width in the minor axis direction Y of the tips 17 is shorter than the width of the same direction Y' as the minor axis direction Y at the roots 16. The respective tufts 12 are arranged parallel by directing the major axis direction X to the same direction and are flocked with both ends of the minor axis direction Y at the tips 17 existing on the side inner than a perpendicular Z risen perpendicularly from both ends of the same direction Y' as the minor axis direction Y at the roots 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush having a tuft having a plurality of tufts formed by bristles bundling.

[0002]

2. Description of the Related Art Toothbrushes are prepared by bundling bristles into tufts by implanting flat wires into a plurality of flocking holes provided in a flocking table or fusing with heat. It is formed by mounting and fixing. According to the conventional tufts, the cross-sectional shape of the tip portion is almost the same as the cross-sectional shape of the root portion, so the width of the tip portion in the cleaning direction is narrowed to a gap such as an interdental portion. In order to improve the reachability of the bristles, the width of the root portion becomes narrow, and it becomes impossible to firmly support the cleaning force, so that stable cleaning cannot be performed.

According to the present invention, the width of the tip portion, which is the cleaning direction, in the minor axis direction is narrowed to improve the reachability of the bristle to the interdental portion and the like, and the cleaning force is strengthened at the root portion. An object of the present invention is to provide a toothbrush that can be stably supported and supported for stable cleaning.

[0004]

SUMMARY OF THE INVENTION The present invention is a toothbrush in which a plurality of tufts formed by bristling bristles are planted on a flocking table, and the tip of the toothbrush is rectangular, elliptical, oval, substantially rectangular, or substantially rhombic. While having a horizontally long flat cross-sectional shape having a long axis and a short axis, the width of the tip in the long axis direction is longer than the width of the root in the same direction as the long axis, and the width of the tip in the short axis direction is The above object is achieved by providing a toothbrush having a tuft whose width is shorter than the width of the root portion in the same direction as the minor axis direction.

According to the toothbrush of the present invention, the tip portion has a horizontally long flat cross-sectional shape having a major axis and a minor axis, such as a rectangle, an ellipse, an ellipse, a substantially rectangle, and a rhombus, and the major axis of the tip portion. The width in the direction is longer than the width in the same direction as the long axis direction in the root part, and the width in the short axis direction of the tip part is provided with a tuft shorter than the width in the same direction as the short axis direction in the root part, If the tufts are arranged so that the long axis direction at the tip end is perpendicular to the cleaning direction, the width along the short axis direction, which is the cleaning direction, becomes narrower and the density in the cleaning direction becomes smaller. Since it becomes sparse, the reachability of the bristle to the interdental part and the like is improved. Further, the width of the tip portion in the same direction as the short axis direction is longer than the width of the tip portion in the short axis direction, so that the density of the bristle in the cleaning direction in the root portion can be kept dense. , It is possible to perform a stable cleaning by firmly supporting the cleaning force by the root portion. Further, the width of the tip portion in the major axis direction is longer than the width of the root portion in the same direction as the major axis direction, and the width of the tip portion in the minor axis direction is greater than the width of the root portion in the same direction as the minor axis direction. Short tufts, if both ends in the short axis direction at the tip end are planted so that they are located inside the perpendicular line that is vertically raised from both ends in the same direction as the short axis direction at the root part,
The tufts slide into the interdental portions both when pushing and when pulling in the brushing direction, and it becomes possible to clean the mesial and distal surfaces of the interdental portions evenly.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to its preferred embodiments. As shown in FIGS. 1 and 2, the toothbrush 10 of the present embodiment has a plurality of toothbrushes 14 formed on a toothbrush main body 14 including a gripping portion (not shown), a hair transplant base 14 and a neck 15 connecting them. A plurality of tufts 12 configured by bristling bristles 11 are flocked into individual flocked holes 13.

Further, according to the toothbrush 10 of this embodiment, each tuft 12 has a tip 17 having a long axis and a short axis perpendicular thereto, as shown in FIGS. 3 (a) to 3 (c). In addition to having a substantially oblong horizontal cross-sectional shape, the width of the tip portion 17 in the major axis direction X is longer than the width of the root portion 16 in the same direction X ′ as the major axis direction X, and the length of the tip portion 17 is short. The width of the tuft 12 in the axial direction Y is shorter than the width of the root portion 16 in the same direction Y ′ as the minor axis direction Y. Further, according to the present embodiment, in each of the plurality of tufts 12, the width of the tip portion 17 in the long axis direction X is longer than the width of the root portion 16 in the same direction X ′ as the long axis direction X, and the tip portion 17 is formed. The width of the root portion 16 in the short axis direction Y is smaller than the width of the root portion 16 in the same direction Y ′ as the short axis direction Y. Also each tuft 1
2 are arranged in parallel so that the major axis directions X of the respective tip portions 17 are directed in the same direction, and the major axis directions X at the tip portions 17 are substantially perpendicular to the main cleaning direction S by the toothbrush 10. Are arranged as follows.

Further, according to the toothbrush 10 of the present embodiment, both ends of the tip portion 17 of the tuft 12 in the minor axis direction Y rise vertically from both ends of the root portion 16 in the same direction Y'as the minor axis direction Y. Each tuft 12 is flocked so as to be located inside the vertical line Z.

The toothbrush body is made of polypropylene,
It is made of a synthetic resin such as ABS resin, and on the flat surface of the flocking table 14, a large number of flocking holes 13 are formed longitudinally and laterally at predetermined intervals. Each flocked hole 13 has a width in the cleaning direction S of about 1 to 5 mm, and a width in the direction perpendicular to the cleaning direction S is 0.
It has a substantially oval shape with a size of about 3 to 2 mm, and has a flocking table 1
4 are distributed substantially evenly on the surface. Each hole 13
The tufts 12 are planted in the inside by a known method such as heat fusion.

The bristles 11 forming each tuft 12
Is made of synthetic resin such as nylon, for example, 0.1 to 0.
The tuft 12 is formed by bundling, for example, ten or more filament materials having a thickness of 3 mm.

According to this embodiment, the tip portion 17 of each tuft 12 has a flat cross section with a substantially oval shape, and the tip portion 17 has a flat cross section.
The width in the major axis direction X of the root portion 16 is longer than the width in the same direction X ′ as the major axis direction X of the root portion 16,
Has the same width Y ′ as the minor axis direction Y in the root portion 16
The tuft 12 is shorter than the width. The root portion 16 is provided with the tufts 12 in the tufting holes 13 so that the tufts 12 have a substantially oval flat cross-sectional shape similar to that of the tufting holes 13. On the other hand, the tip portion 17 has a major axis of about 1 to 5 mm and a minor axis of about 0.3 to about 3 mm at a height position H = 8 to 14 mm away from the root portion 16 or the surface of the flocking table 14.
It has a substantially oval flat cross-section with a size of about 2 mm.

The bristle 11 located on the outer peripheral portion of each tuft 12 has a root portion 16 as shown in FIG. 3 (a).
From 0.7 to 7 when viewed from above from the tip to the tip 17.
mm (see L1), minimum 0.5-5 mm (L2
Due to the shift of the position, the region between the surface of the flocking table 14 and the height H is inclined at a considerable inclination angle θ from the vertical direction (FIG. 3 (b),
(C)).

Further, according to this embodiment, the toothbrush 1
The main cleaning direction S by 0 is the longitudinal direction of the flocking table 14, whereby the tip portion 17 of each tuft 12 is formed.
The major axis direction X in is arranged so as to be perpendicular to the cleaning direction S. The width of the tip portion 17 in the cleaning direction S is a substantially uniform narrow width of about 0.3 to 2 mm, which corresponds to the length of the tip portion 17 in the short axis direction Y.

According to the toothbrush 10 of the present embodiment, the reachability of the bristle 11 to the interdental portion and the like can be improved, and the brushing force is firmly supported for stable brushing. It can be carried out. That is, in the toothbrush 10 of the present embodiment, the distal end portion 17 has a substantially oval flat cross-sectional shape, and the width of the distal end portion 17 in the major axis direction X is the same as the major axis direction X in the root portion 16 in the direction X ′. And a width of the tip portion 17 in the minor axis direction Y is shorter than a width of the root portion 16 in the same direction Y ′ as the minor axis direction Y. Since the major axis direction X in 17 is arranged so as to be perpendicular to the cleaning direction S, the width of the tip portion 17 along the minor axis direction Y, which is the cleaning direction S, becomes substantially uniform. The relevant cleaning direction S
Becomes less dense, which improves the reachability of the bristles 11 to gaps such as interdental portions. Further, the width of the tip portion 17 in the root portion 16 in the same direction Y ′ as the minor axis direction Y is longer than the width of the tip portion 17, and the density in the root portion 16 in the cleaning direction S becomes denser. Further, it is possible to firmly support the cleaning force by the root portion 16 and perform stable cleaning with the toothbrush 10.

In the tuft 12, the width of the tip portion 17 in the major axis direction X is longer than the width of the root portion 16 in the same direction X'as the major axis direction X, and the width of the tip portion 17 in the minor axis direction Y is large. Since the width is shorter than the width of the root portion 16 in the same direction Y ′ as the minor axis direction Y, the bristles 11 located on the outer peripheral portion are inclined at a considerable inclination angle θ, thereby increasing the contact stress. The effect and the effect of improving reachability can be sufficiently obtained.

Further, according to the toothbrush 10 of the present embodiment, both ends of the tip portion 17 of the tuft 12 in the minor axis direction Y are vertically raised from both ends of the root portion 16 in the same direction Y'as the minor axis direction Y. Since the tufts 12 are implanted so as to be located inside the vertical line Z, the tufts 12 slide into the interdental parts both when pushing in the cleaning direction S and when pulling, and the mesial part of the interdental parts Both the surface and the centrifugal surface can be cleaned evenly.

The present invention is not limited to the above embodiment, but various modifications can be made. For example, the flat cross-sectional shape of the tip does not necessarily have to be a substantially oval shape,
Other horizontally long flat cross-sectional shapes having a long axis and a short axis, such as a rectangle, an ellipse, a substantially rectangle, and a rhombus may be used. Also,
It is not always necessary that the flat cross-sectional shape of the tip portion and the flat cross-sectional shape of the root portion have the same shape. Further, all tufts to be planted on the flocking table are such that the width of the tip portion in the long axis direction is longer than the width of the root portion in the same direction as the long axis direction, and the width of the tip portion in the short axis direction is the root portion. The tuft does not necessarily have to be shorter than the width in the same direction as the minor axis direction, and the same effect can be obtained even if a part of the tuft has such a configuration. Furthermore, it is not always necessary to arrange all tufts in parallel with the major axis direction facing the same direction, but by arranging them in different directions, the same effect can be obtained even if the cleaning direction is changed. You can also Further, even if the end of the tuft tip in the short axis direction is planted so that it is located outside the perpendicular line that is vertically raised from both ends of the root portion in the same direction as the short axis direction, By devising such as inclining the surface, the tufts slip into the interdental part when pushing and pulling in the cleaning direction, so that the mesial and distal surfaces of the interdental part can be cleaned evenly. It is possible to

[0018]

According to the toothbrush of the present invention, the width of the tip portion, which is the cleaning direction, in the minor axis direction is narrowed to improve the reachability of the bristle to the gap such as the interdental portion, and the root portion. Stable brushing can be performed by firmly supporting the brushing force with.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a toothbrush according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a main part of a toothbrush according to an embodiment of the present invention.

FIG. 3A is a top view for explaining the shape of a tuft.
(B) is a side view of (a) viewed from below, (c) is (a)
It is the side view which looked at from the right side.

[Explanation of symbols]

10 toothbrush 11 Bristle 12 tufts 13 hair transplant holes 14 hair transplanter 15 neck 16 root 17 Tip X Longitudinal direction of the tip X'the same direction as the major axis direction of the tip part at the root part Y Minor axis direction of the tip Y'same direction as the minor axis direction of the tip part at the root part S cleaning direction Z A vertical line that has been erected vertically from both ends at the root

Claims (4)

[Claims] 1. A toothbrush formed by implanting a plurality of tufts formed by bristling bristles on a flocking table, wherein the tip portion has a long axis and a short axis such as a rectangle, an ellipse, an ellipse, a substantially rectangle, and a rhombus. In addition to having a horizontally long flat cross section,
A tuft in which the width of the tip portion in the major axis direction is longer than the width of the root portion in the same direction as the major axis direction, and the width of the tip portion in the minor axis direction is shorter than the width of the root portion in the same direction as the minor axis direction. Toothbrush with. 2. All of the tufts to be planted on the flocking table, wherein the width in the long axis direction of the tip portion is longer than the width of the root portion in the same direction as the long axis direction, and the short axis direction of the tip portion. The toothbrush according to claim 1, wherein the width of the tuft is a tuft shorter than the width of the root portion in the same direction as the minor axis direction. 3. The width of the tip portion in the major axis direction is longer than the width of the root portion in the same direction as the major axis direction, and the width of the tip portion in the minor axis direction is in the same direction as the minor axis direction in the root portion. 3. The toothbrush according to claim 1 or 2, wherein tufts shorter than the width of each of the tufts are arranged parallel to each other with their long axis directions oriented in the same direction. 4. The width of the tip portion in the major axis direction is longer than the width of the root portion in the same direction as the major axis direction, and the width of the tip portion in the minor axis direction is in the same direction as the minor axis direction in the root portion. 2. The tufts having a width shorter than the width of No. 1 are flocked so that both ends of the tip portion in the short axis direction are located inside a perpendicular line that is vertically raised from both ends of the root portion in the same direction as the short axis direction. The toothbrush according to any one of to 3.