JP2000296024A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a uniform cleaning effect at the time of brushing by properly planting a group of half-folded filaments. SOLUTION: In the case of setting a long edge along the handle of the block head 1 of a toothbrush to be a column and a shorter edge to be a row, filaments are so planted that each of the half-folded filaments of both outermost columns has at least one tip of both of the half-folded ends tapered and projected compared with the other end and the tapered tip side is positioned on the outermost side. Concerning filaments except for both of the outer most sides, at least one tip of both of the half-folded ends is tapered and projected compared with the other end. At the other end, a filament tip is given curved surface work or provided with a ball larger than the diameter of the filament.

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 an improved brush structure.

[0002]

The applicant has already disclosed a toothbrush in which the configuration of the bristles of the brush is such that half is tapered and half is spherical or cut off. (Japanese Patent Application Laid-Open No. 7-284412). This toothbrush has a function in which a tapered brush enters a periodontal pocket and sufficiently scrapes plaque, and a spherical tip has a function of massaging a gum. Alternatively, at the same time that the tapered tip is restricted so that the taper does not enter deeply into the periodontal pocket, it has the function of cleaning the surface of the tooth as conventionally used.

When a brush is implanted on a brush stand, a large number of filaments are filled in a cartridge, a group for implanting the brush is picked out from the cartridge, and an intermediate portion is bent in half to form a flat wire. Together with a brush table. Therefore, when one is tapered and the other is a sphere or a filament that has been cut off, the cartridge must be filled in a uniform end face shape. In such a case, the mode of the flocking is fixed, and the flocking state is as shown in FIG. That is, all the filaments folded in half always have a taper appearing in the same direction, and a sphere or a cut-off appears in the opposite direction. In other words, if the brush stand of FIG. 4 has a cross section,
A tapered brush appears on the outermost side on one side, while a spherical or cut-off brush appears on the other side.

When brushing is performed using a toothbrush, the tip of the tapered bristles hits the teeth or gums in one direction with respect to the short side direction of the brush base, but the other end in brushing in the opposite direction. It will be cut off or hit by a ball. However, in the brushing in the vertical direction, although it is preferable that the hair tips act evenly on the teeth and gums, there is a problem that the hitting of the filament is reversed according to the brushing direction in the above-mentioned conventional flocking. Was.

An object of the present invention is to solve such a conventional problem, and it is possible to obtain a uniform brushing effect at the time of brushing by appropriately flocking a half-folded filament group. It is intended to disclose a toothbrush that can be made.

[0006]

In order to achieve the above object, in the present invention, a plurality of filaments are folded in half to form a group, and the group is formed into a plurality of rows to form a toothbrush which is planted on a brush base. When the long side along the handle of the brush stand is a column, and the short side is a row, each of the groups on both outer sides of the column has at least one end of the half-folded end tapered, and the other end is tapered. Also protruded. Furthermore, the hair was implanted so that the tapered tip side was positioned at the outermost side. With this configuration, tapered hair tips always appear at both outer hair tips along the long side of the brush stand. This makes it possible to perform uniform cleaning during brushing in the short side direction.

In order to further increase the cleaning effect of the tapered brush, at least one end of the half-folded end of the group other than both outer sides is tapered to protrude beyond the other end. Was used. Furthermore, in order to obtain the effect of brushing the gums, a means for forming a curved surface on the tip of the other end or providing a sphere larger than the filament diameter is used. In addition, the group in which the filament was half-folded was configured to have three or four rows. When three or four rows are used, handling and brushing as a toothbrush are optimally performed.

[0008]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a portion of a toothbrush of the present invention related to a brush stand, wherein 1 is a brush stand, 2 is a throat connected to a handle (not shown), and 3 is a brush set on the brush stand 1. In the present embodiment, brushes 4 are arranged in groups of four by folding the filament in half, and are arranged in four columns and seven rows. Further, a group of three columns and one row is arranged on the tip side of the brush base 1, A group of two columns and one row is arranged on the base end side of the table 1. In addition, regarding the brush stand 1, the side a is a long side, and the side b is a short side. Next, FIG. 2 is a schematic view showing the brush stand 1 as viewed from directly above, in which flocked holes 5 for flocking a group of filaments 4 are arranged in 4 columns and 7 rows, and 3 One column,
Flocked holes 5 in two columns and one row are arranged on the base end side. Then, a group of filaments that are half-folded are implanted into each of the flocked holes 5... 5. In this embodiment, as shown in FIG. In the first and fourth outermost rows of the rows, the group 6 of filaments shown in FIG. That is, a group 6 of filaments is formed by half-folding a plurality of filaments into one group, and one end is formed as a tapered tapered shape 7 to protrude from the other end 8. Then, the hair is implanted so that the tapered tip 7 is arranged outside at least in the first and fourth rows. By doing so, the tapered tip 7 appears uniformly on the outermost side along the long side a of the brush base 1, so that a uniform effect in brushing can be expected.

In the second and third rows, both ends of the filament group 4 may be both cut off, or both ends may be tapered. Alternatively, in the case where only one end is to be the tapered tip 7,
It does not matter where the tapered tip 7 appears,
In order to achieve more uniform brushing, it is preferable that the brush stand 1 be arranged so as to be line-symmetrical at the center. Also,
Regarding the three rows and one row on the brush base tip side and the two rows and one row on the base end side in the embodiment, the direction of the flocking is not particularly limited.

[0010] By the way, in order to implant the group of filaments 4 on the brush base 1, as described in the disclosure of the prior art, generally, a flat wire is positioned at the center of the group of filaments and folded in half. A flocking machine that achieves the process of driving into a brush stand is employed. In this case, if the process of grasping a group of filaments and half-folding them on a flat line consists of only a single process, even if the group of filaments is implanted on the brush base, It is not possible to reverse the flocking of the outermost group along the long side a as in the embodiment. Therefore, in order to reverse the flocking of each group as a step, a step of rotating the filament by 180 degrees is inserted between the step of grasping a group of filaments and the step immediately before flocking.

On the other hand, as described above, the filament is
If the mechanism for rotating 0 degrees is complicated, it is possible to provide two flocking machines in parallel, and to make the directions of both ends of the bundle of filaments provided in each flocking machine opposite. In this case, the flocking machine operates according to the direction of the flocking.

In this embodiment, the bristles on the brush stand 1 are basically arranged in four rows. However, even if three rows are used, there is no difference. Specifically, one out of three columns
The direction of the flocking in the third and third rows is reversed, and the direction of the center row does not matter. Alternatively, both ends of the central row may be tapered, or both ends may be cut off.

[0013]

According to the present invention, in the construction of the toothbrush, when the long side along the handle of the brush stand is defined as a column and the short side is defined as a row, both outer groups of the column are filaments which are folded in half. At least one end of both ends is tapered so that it protrudes from the other end, and the hair is planted so that the tapered tip side is located at the outermost side, so that the outer periphery along the long side becomes a brush having a tapered tip. In brushing, a uniform cleaning effect can be exerted regardless of the short side direction.

In the case of a group other than both outer sides, if a configuration is adopted in which at least one end of each of the half-folded ends is tapered to protrude from the other end, the tapered end is also formed in the row of the central portion. Function effectively, and a favorable brushing effect can be exhibited. Furthermore, in the configuration in which the filament tip on the other end side is curved, it is possible to suppress damage to the gums and the like, and in the configuration in which a ball having a diameter larger than the filament diameter is provided at the tip, this portion fits into the periodontal pocket. Therefore, only the tapered tip can be fitted into the periodontal pocket to exhibit a favorable brushing effect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a brush base portion of a toothbrush of the present invention.

FIG. 2 is a schematic view of a state where only a brush stand is viewed from directly above;

FIG. 3 is a cross-sectional view showing a flocking state of a filament.

FIG. 4 is a diagram showing one unit of a filament.

FIG. 5 is a sectional view showing a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 brush stand 2 throat 3 brush 4 group of filaments 5 flocking hole 6 group of filaments 7 tapered tip 8 other end

Claims (6)

[Claims] 1. A toothbrush in which a plurality of filaments are folded in half to form a group, and the group is arranged in a plurality of rows in a toothbrush on a brush base, and long sides along a handle of the brush base are arranged in rows.
When the short side is a row, the groups on both outer sides of the column are:
A toothbrush characterized in that at least one end of each of the half-folded ends is tapered so as to protrude from the other end, and the hair is implanted so that the tapered front end is positioned at the outermost side. 2. The toothbrush according to claim 1, wherein at least one end of each of the half-folded ends is tapered to protrude beyond the other end. 3. The toothbrush according to claim 1, wherein the other end of the toothbrush has a curved tip. 4. The toothbrush according to claim 1, wherein a sphere having a diameter larger than the filament diameter is provided at the other end. 5. The toothbrush according to claim 1, wherein the group is composed of three rows. 6. The toothbrush according to claim 1, wherein the group is constituted by four rows.