JP3240426U - toothbrush - Google Patents

Abstract

An object of the present invention is to provide a toothbrush that can easily achieve a sufficient cleaning effect with only one toothbrush without using a plurality of toothbrushes having bristles with different cleaning effects. The toothbrush includes a head portion 3, a handle portion, and a plurality of bristles 5 implanted in the head portion, wherein the bristles include a plurality of first bristles with sharp tips and a A toothbrush comprising both a plurality of second bristles that are flat surfaces, wherein the first bristles are taller than the second bristles. [Selection drawing] Fig. 6

Description

The present invention relates to toothbrushes.

Conventional general toothbrushes include a variety of toothbrushes according to purposes, such as a special toothbrush for cleaning between teeth and a toothbrush for cleaning the surface of teeth.

JP 2017-93624 A

To provide a toothbrush capable of easily exhibiting a sufficient cleaning effect with only one toothbrush without using a plurality of toothbrushes having bristles with different cleaning effects.

In order to solve the above problems, a toothbrush according to a first aspect of the present invention comprises a head portion, a handle portion, and a plurality of bristles implanted in the head portion, wherein the bristles are: It has both a plurality of first bristles with pointed tips and a plurality of second bristles with flat tips, wherein the first bristles are taller than the second bristles. It is characterized by

According to the toothbrush of the second embodiment, according to the configuration of the toothbrush of the first embodiment, the first bristle material and the second bristle material each have a substantially square cross section in a direction orthogonal to the respective center lines. , wherein the apexes of the cross section are spirally connected in the direction of the center line.

A toothbrush according to a third embodiment is the toothbrush according to the second embodiment, wherein the head portion has a recess for implanting the bristles, and the first bristles and the second bristles are connected to each other. A single bristle material is formed, and the bristles are planted in the recess after being folded in two with a flat wire therebetween.

A toothbrush according to a fourth embodiment is the toothbrush according to the third embodiment, wherein the flat line extends in a direction intersecting the bristles on a surface that contacts the bristles when the bristles are implanted in the recess. It is characterized by having grooves.

A fifth embodiment is the toothbrush according to any one of the first to fourth embodiments, wherein the head portion is made of PET resin.

Even if a plurality of toothbrushes having bristles with different cleaning effects are not used, only one toothbrush can easily exhibit a sufficient cleaning effect.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows schematic structure of the toothbrush of this invention. FIG. 2 is an enlarged plan view of the head portion of FIG. 1; 1 is a side view of bristles used in the toothbrush of the present invention; FIG. FIG. 2 is an enlarged side view showing a hair-implanted state of the head portion of FIG. 1; 3 is an enlarged cross-sectional view taken along line AA of FIG. 2, showing the state of the head portion of FIG. 1 before flocking; FIG. 3 is an enlarged cross-sectional view taken along the line AA in FIG. 2, showing the state of flocking of the head portion in FIG. 1; FIG. 1 is a perspective view of a flat line used for flocking the toothbrush of the present invention; FIG. 3 is a top view showing a plurality of bristles in the tufts of the head of FIG. 2; FIG.

First, the structure of the toothbrush which concerns on this embodiment is demonstrated. FIG. 1 is a plan view showing a schematic configuration of a toothbrush. FIG. 2 is a plan view of the head portion, 4 indicates a tufting hole, and 8 indicates a group of tufts. FIG. 3 is a side view of the bristle material used for the toothbrush. 6 is a flat surface of the bristles, and 7(X) is a sectional view connecting the bristles XX. FIG. 4 is a side view showing the tufted state of the head portion, wherein 6A indicates the tapered end of the bristle material, 6 indicates the flat surface of the bristle material, and 10 indicates the tufted surface.

An embodiment will be described below with reference to the accompanying drawings. The toothbrush 1, as shown in the schematic plan view of FIG. 1, comprises a handle 2 to be gripped by hand and a head 3 having a plurality of bristles 5 implanted therein. The handle portion 2 and the head portion 3 are integrally formed of PET resin, and the head portion has a flocked surface 10 on which a plurality of hair materials are flocked.

As shown in the plan view of FIG. 2, the head portion 3 is formed with tufting holes 4, which are a plurality of concave portions for bristle tufting. The tufting holes 4 are arranged in 7 vertical rows and 3 horizontal rows, totaling 21, and are circular holes each having a diameter of 1.6 mm and a depth of 4 mm.

The bristles are made of PBT resin and have a length of 28 mm, and have a substantially quadrangular pyramid shape as shown in the side view of FIG. The bristle material 5 has a tapered end 6A with a sharp tip on one side and a flat surface 6 on the other side. The flat surface 6 is a square with one side of 0.17 mm, and the cross section taken along the line XX in FIG. It has a helical structure in which the tip is rotated 17 times around the center line N from the flat surface. The dimensions and number of twists are examples. As a result, the vertex of the cross section forms a sharp angle on the surface of the bristles, and dirt on the tooth surface is efficiently scraped off by the bristles having a non-twisted structure.

The flat wire 9 is made of brass and has a substantially rectangular parallelepiped shape, and has planes a1 and a2, and planes b1 and b2 facing each other. As shown in FIG. 7, the cross section of the flat line is rectangular, and a1 and a2, b1 and b2, and c1 and c2 of the flat line 9 are parallel to each other. The c1 and c2 planes have recessed grooves which extend parallel to the a1 and a2 planes. As shown in FIG. 6, the flat line is installed toward the bottom of the hole of the tufting hole 4, and the length of the flat line (distance between b1 and b2) is slightly larger than the diameter of the tufting hole 4, It is in contact with the inner periphery of the pore 4. Therefore, friction is generated between the head portion 3 made of PET resin, and the structure is such that it is difficult to come off. In addition, since the head part made of PET resin has the property of being hard to break due to its material, a large number of bristles can be incorporated.

Next, a method of flocking the bristles will be described. The bristles 5 implanted in the head portion 3 are bent in the middle as shown in the cross-sectional view of the bristles 5 in FIG. The hair is planted in the pressing and planting holes 4 . As shown in FIG. 5, the bending position is shifted from the central position of the entire length of the bristles 5 toward the flat surface 6 side. As a result, a difference in height is generated between the two bristle tips by pressing in with the flat line 9 . The height difference Δh shown in FIG. 6 is 3 mm. The height refers to the dimension from the flocked surface to the tip of the hair. The sharp end of the bent portion forms the first bristle member, and the other bent end portion having the flat surface forms the second bristle member. In the drawing, one bristle material is shown to avoid complication of the drawing, but in reality, a plurality of bristle materials are planted at the same time as shown in FIG. 6A is the tapered end of the bristles and 6 indicates the flat side of the bristles. As a result, when the sharp tips of the first bristles having a plurality of height differences of 3 mm reach the gaps between teeth and the gaps between teeth and gums, the second bristles are flattened on the surface of the teeth at the same time. The tip touches, making it possible to clean more efficiently.

The flat wire 9 is driven in parallel with the tufting holes 4, which are recesses in the head portion, together with a plurality of bristles 5, so that the grooves on the surface of the flat wire and the bristles are positioned in the direction in which they intersect. It has a structure that makes it difficult to pull out from the tufting holes 4. - 特許庁

The bristles embedded in the tufting holes 4 are implanted by the above-mentioned flat line 9 which is slightly larger in diameter than the tufting holes 4 in the head, and have a structure that is hard to come off due to frictional resistance with the head. is formed.

The bristles 5 are planted as shown in the side view of the head portion in FIG. 4, and a plurality of the bristles are bundled and planted in the tufting holes 4 of the head portion made of PET resin which is hard to break. there is

As shown in the cross-sectional view of the flocking state in FIG. 6, the bristle material 5 is folded in two along the flat line, and flocked with a height difference in the flocking hole 4 in the head portion by setting the flocking machine. . Moreover, as shown in the top view of the recessed tufting hole in FIG.

In this embodiment, the handle portion 2 and the head portion 3 are integrally formed. In this case, at least the first member should be made of PET resin.

In the present embodiment, as shown in FIG. 2, the head portion 3 has a flat plate shape obtained by gently cutting off the four corners of a rectangle in plan view, and is curved in a tapered shape toward the tip (upper end in FIG. 2). . The head portion 3 has a flocked surface 10 on its surface. A plurality of bottomed cylindrical tufting holes 4 are formed in the tufting surface 10 . Each tufting hole 4 is tufted with a tuft consisting of a plurality of bristle materials, and these tufts as a whole constitute a tuft group 8 in the area indicated by the dashed line in FIG.

REFERENCE SIGNS LIST 1 toothbrush body 2 handle 3 head 4 tufting hole 5 bristle material 6 bristle flat surface 6A bristle tapered end 7 (X) bristle intermediate section 8 tuft group 9 flat line 10 bristle planting surface

Claims (5)

A toothbrush comprising a head portion, a handle portion, and a plurality of bristles implanted in the head portion, wherein the bristles include a plurality of first bristles with sharp tips and a flat surface at the tip. A toothbrush comprising both a plurality of second bristles, wherein said first bristles are taller than said second bristles. The first bristle material and the second bristle material each have a substantially square cross-section perpendicular to the center line, and the apexes of the cross section are spirally connected in the direction of the center line. The toothbrush according to claim 1. The head portion has a recess for planting the bristle material, and the first bristle material and the second bristle material are connected to each other to form a single bristle material, sandwiching a flat wire. 3. The toothbrush according to claim 2, wherein the toothbrush is folded in half and bristles are planted in the recess. 4. The flat line according to claim 3, wherein the flat line has a groove extending in a direction intersecting with the bristle material on a surface that contacts the bristle material when the bristle material is planted in the recess. Toothbrush. The toothbrush according to any one of claims 1 to 4, wherein at least the head portion is made of PET resin.

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