JP2001178540A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush capable of massaging gums and the like effectively and preventing an elastic stick from being damaged easily caused by repetitive use for brushing. SOLUTION: This toothbrush has a bristle bundle 3, which is planted to a planting bed 2, and multiple elastic sticks 1, which are planted into a planting hole 21 for stick on the planting bed 2 individually. In the planting hole 21 for stick, the periphery of opening 21a of planting hole 21 for stick on the surface 22 of planting bed 2 is opened and expanded.

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 plurality of elastic sticks individually planted in a flocking hole of a flocking table, and more particularly to a toothbrush capable of massaging gums and the like more effectively. The present invention relates to a toothbrush in which an elastic stick is hardly damaged by repeated use.

[0002]

2. Description of the Related Art Conventionally, there has been a toothbrush provided with a plurality of elastic sticks individually implanted in a flocking hole for a stick of a flocking table together with a plurality of bristles. Here, the elastic stick is a rod-shaped member formed of an elastic material such as rubber. When brushing is performed using such a conventional toothbrush, the teeth are brushed by the bristles, and at the same time, an appropriate stimulus is given to the gums and the like by the elastic stick, so that a massage effect can be obtained. A toothbrush is desired. Further, in the above-described conventional toothbrush, the elastic stick is easily broken by repeated use of brushing.

Accordingly, it is an object of the present invention to provide a toothbrush which can massage gums and the like more effectively, and in which an elastic stick is not easily broken by repeated use of brushing.

[0004]

Means for Solving the Problems The present inventors have made various studies to achieve the above object, and as a result, by expanding the opening periphery of the flocking hole for the stick of the toothbrush having the elastic stick, the gums and the like can be obtained. It has been found that the massage can be more effectively massaged and the elastic stick is hardly broken. The present invention has been made based on the above findings, and has a bristle implanted in a flocking table, and a toothbrush having a plurality of elastic sticks individually implanted in the stick flocking holes of the flocking table. The flocking hole for a stick achieves the above object by providing a toothbrush in which an opening periphery of the flocking hole for a stick on the surface of the flocking table is widened.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a toothbrush of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 to 3, the toothbrush of the present embodiment (first embodiment) has a plurality of bristle bundles 3 planted on a flocking table 2. It has a plurality of elastic sticks 1 individually planted in the flocking holes 21 for sticks. The flocking table 2 is connected to a grip (not shown) via a neck 4.

As shown in FIGS. 1 to 3, three elastic sticks 1 are arranged at predetermined intervals along both longitudinal edges of the flocking table 2, respectively. As shown in FIGS. 1 and 2, the bristle bundle 3 is configured by bundling dozens of bristles 31 each.
The bristles are planted in bristle bundle flocking holes 24 provided in the flocking table 2. As shown in FIGS. 1 and 2, the elastic sticks 1 are alternately arranged with the bristle bundles 3 on both longitudinal edges of the flocking table 2.

As shown in FIG. 1, the heights of the six elastic sticks 1 are substantially uniform, and the heights of the 25 bundles of bristle bundles 3 are also substantially uniform. 0.5 to 2.0 mm from the tip of 3
It is protruding.

The elastic stick 1 is a rod-shaped member formed of an elastic material such as silicone rubber. Examples of the elastic material include silicone rubber, rubber such as styrene-butadiene rubber or ethylene-propylene rubber, or synthetic resin. . Examples of the material of the bristle 31 include natural hair and artificial hair made of nylon or polypropylene terephthalate.

The toothbrush of the present embodiment will be further described. As shown in FIG. 3, the elastic stick 1 has a locking portion 11 at the lower end thereof.
Are connected at the locking portion 11 in a set of three. As shown in FIG. 2, the cross section of the elastic stick 1 is a substantially triangular shape with rounded corners, and one of the corners faces the center of the flocking table 2 in plan view. The axial end of the elastic stick 1 is rounded, and the cross section gradually decreases toward the distal end. The flocking hole 21 for the stick penetrates the flocking table 2, and the elastic stick 1 is moved from the back surface 23 side of the flocking table 2 to the flocking hole 2 for the stick.
1 and is locked by a locking portion 11.

The above-described configuration of the toothbrush of this embodiment is the same as the configuration of this type of conventional toothbrush.
Thus, in the toothbrush of the present embodiment, as shown in FIGS.
The opening peripheral edge 21a of the flocking hole 21 for the stick on the surface 22 of the stick is expanded and has a trumpet shape.

The opening peripheral edge 21a will be further described.
As shown in FIG. 5, the opening peripheral edge 21a has a line P obtained by extending a vertical line representing the inner peripheral surface 21b of the stick flocking hole 21 upward in a central longitudinal section of the stick flocking hole 21; A virtual corner 25 formed by intersecting a horizontal line representing the surface 22 of the flocking table 2 with the line Q extending in the direction of the stick flocking hole 21 is cut out and expanded.
It has a convex curved surface. Therefore, the opening periphery 21a is
In the center longitudinal section of the flocking hole 21 for sticks, an arc shape is formed.

When the form of expansion of the opening peripheral edge 21a is numerically represented, as shown in FIG. 5, the corner 25 and the corner 25 at the opening peripheral 21a of the flocking hole 21 for a stick are provided.
Distance d1 from the nearest vertex 21d (almost the center) to
Is preferably 0.01 to 0.5 mm, more preferably 0.03 to 0.2 mm. The distance d2 from the corner 25 to the inner peripheral surface 21b before the cut of the flocking hole 21 for stick is preferably 0.03 to 1.0 mm, more preferably 0.1 to 0.5 mm. In addition, the corner 25
Is preferably 0.03-1.0 mm, more preferably 0.1-0.5 mm.
mm.

The cross-sectional area of the flocking hole 21 for a stick is preferably 1.0 to 3.0 mm ² ,
Are closely embedded in the flocking holes 21 for sticks.

In the toothbrush according to the first embodiment, the opening peripheral edge 21a of the flocking hole 21 for stick is formed in an arc shape in the central longitudinal section of the flocking hole 21 for stick. Can be variously shaped opening edges.

For example, like the toothbrush of the second embodiment shown in FIG.
May be formed by chamfering, or, as in the toothbrush of the third embodiment shown in FIG. 7, formed by chamfering the opening periphery 21a of the flocked hole 21 for a stick from two flat surfaces. May be.

According to the toothbrushes of the first to third embodiments having the above-described structure, the elastic stick can be compared with a conventional toothbrush of this type in which the opening peripheral edge 21a of the flocking hole 21 for a stick is not expanded. 1. Mobility (flexibility) is high,
It is possible to massage the gums and the like, particularly the margins and nipples thereof, more effectively. Further, the elastic bristle 1 is hardly damaged by repeated use of brushing.

Specific examples of the shape of the peripheral edge of the opening of the flocking hole for sticks include the toothbrushes of the following fourth embodiment in addition to the toothbrushes of the first to third embodiments. In the toothbrush according to the fourth embodiment shown in FIGS. 8 and 9, the opening peripheral edge 21 of the flocking hole 21 for a stick is located on the side of the flocking hole 21 for a stick and the surface 22 of the flocking table 2 in the central longitudinal section of the flocking hole 21 for a stick. It is formed in an arc shape protruding to the side.

In the toothbrush of the fourth embodiment, the peripheral edge of the opening on the inner peripheral surface 21b of the flocking hole 21 for stick protrudes toward the flocking hole 21 for stick.
In addition, since the peripheral edge of the opening on the surface 22 of the flocking table 2 protrudes toward the surface 22 of the flocking table 2, a protruding portion 26 is formed on the peripheral portion of the opening.
And a line P parallel to the vertical axis of the stick flocking hole 21 passing through the apex 21c of the projecting portion 26 on the stick flocking hole 21 side in the central longitudinal section of the stick flocking hole 21. A virtual corner 25 formed by crossing a horizontal line parallel to a horizontal line representing the surface 22 of the flocking table 2 and a line Q passing through the upper vertex 22a of the projecting portion 26 is cut out and expanded. I have.

In the toothbrush of the fourth embodiment, the first
According to the toothbrush of the embodiment, the opening peripheral edge 21a has a convex curved surface, and has a circular arc shape in the central longitudinal section of the flocking hole 21 for a stick. When the expansion form of the opening peripheral edge 21a is represented by a numerical value,
The corner portion 25 and a vertex 21d (approximately the center portion) closest to the corner portion 25 of the opening peripheral edge 21a of the projecting portion 26
Is preferably 0.01 to 0.5 mm,
More preferably, it is 0.03 to 0.2 mm. Flocked hole 21 for a stick in the projecting portion 26 from the corner portion 25
The distance d12 to the side vertex 21c is preferably 0.0
It is 3 to 1.0 mm, more preferably 0.1 to 0.5 mm. The distance d13 from the corner 25 to the upper vertex 22a of the protruding portion 26 is preferably 0.1 mm.
03-1.0 mm, more preferably 0.1-0.5 mm
It is.

Inner peripheral surface 21b of flocking hole 21 for stick
And the distance d14 from the protrusion 26 to the vertex 21c on the stick flocking hole 21 side is preferably 0.01 to
It is 0.2 mm, more preferably 0.02 to 0.1 mm. Further, the distance d15 between the surface 22 of the flocking table 2 and the upper vertex 22a of the protruding portion 26 is preferably set to 0.
03-1.0 mm, more preferably 0.1-0.5 mm
It is.

In the toothbrush of the fourth embodiment,
The protruding portions 26 protruding from the flocking hole 21 for the stick and the surface 22 of the flocking table 2 are formed. However, in the toothbrush of the present invention, the protruding portions may protrude on either side.

The same effect as that of the toothbrushes of the first to third embodiments can be obtained in the toothbrush having the protruding portions like the toothbrush of the fourth embodiment. Further, a toothbrush having a protruding portion, such as the toothbrush of the fourth embodiment, may have the same form as the toothbrushes of the second and third embodiments.

Although the preferred embodiment of the toothbrush of the present invention has been described above, the toothbrush of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. is there. In the toothbrush of the present invention, the opening periphery of the flocking hole for a stick only needs to be widened, and the opening periphery may have a shape different from those of the first to fourth embodiments. It is preferable that the peripheral edge of the opening of the flocking hole for a stick is widened over the entire circumference, but it is not necessary to partially widen it.

With respect to the configuration of the toothbrush of the present invention, the shape, number, material, arrangement and the like of the elastic sticks can be appropriately changed in the same manner as the conventional toothbrush.

[0026]

According to the toothbrush of the present invention, the gums and the like can be massaged more effectively, and the elastic stick is hardly damaged by repeated use of brushing.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a tip portion of a toothbrush according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a tip portion of the toothbrush according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing an elastic stick in the toothbrush according to the first embodiment of the present invention.

FIG. 4 is a longitudinal sectional view (AA sectional view in FIG. 2) showing a tip portion of the toothbrush according to the first embodiment of the present invention.

FIG. 5 is a partially enlarged view of FIG. 4, with an elastic stick omitted.

FIG. 6 is a longitudinal sectional view showing a tip portion of a toothbrush according to a second embodiment of the present invention.

FIG. 7 is a longitudinal sectional view showing a tip portion of a toothbrush according to a third embodiment of the present invention.

FIG. 8 is a longitudinal sectional view showing a tip portion of a toothbrush according to a fourth embodiment of the present invention.

FIG. 9 is a partially enlarged view of FIG. 8, with an elastic stick omitted.

[Explanation of symbols]

 Reference Signs List 1 elastic stick 11 locking portion 2 flocking table 21 stick flocking hole 21a opening periphery 21b inner peripheral surface 21c, 21d, 22a apex 22 front surface 23 back surface 24 bristle bundle flocking hole 25 corner portion 26 protrusion 3 bristle bundle 31 bristle 4 neck

Claims (5)

[Claims] 1. A bristle planted on a flocking table,
A toothbrush having a plurality of elastic sticks individually planted in the stick flocking holes of the flocking table, wherein the stick flocking holes have an opening periphery of the stick flocking holes on the surface of the flocking table. Toothbrush that is expanding. 2. A line obtained by extending a vertical line representing an inner peripheral surface of the flocking hole for stick upward in a central longitudinal section of the flocking hole for stick, and a horizontal line representing a surface of the flocking table. The toothbrush according to claim 1, wherein a virtual corner portion formed by intersecting a line extending in the direction of the flocking hole for a stick is formed by cutting out. 3. The toothbrush according to claim 2, wherein the periphery of the opening has a convex curved surface. 4. An opening peripheral portion on the inner peripheral surface of the stick flocking hole protrudes toward the stick flocking hole side, or an opening peripheral portion on the surface of the flocking table is located on the surface side of the flocking table. By projecting, a protrusion is formed at the periphery of the opening, and the periphery of the opening of the protrusion is located at the vertex of the protrusion at the side of the flocking hole for the stick in the central longitudinal section of the flocking hole for the stick. A virtual corner formed by crossing a line parallel to the vertical axis of the flocking hole for the stick and a line parallel to the horizontal line representing the surface of the flocking table passing through the upper vertex of the protrusion. The part is notched and is expanded.
A toothbrush according to claim 1. 5. The toothbrush according to claim 4, wherein the periphery of the opening has a convex curved surface.