JP2002233421A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush with a novel feel which is capable of improving a cleaning effect and the actual feel of brush cleaning. SOLUTION: Respective bristles 15 of the toothbrush 10 formed by planting tufts 16 bundled with a plurality of the bristles 15 into tuft holes 14 of a block head 12 consist of hermetically sealed bodies of a hollow cylindrical form closed at both ends. The tufts 16 are planted into the tuft holes 14 in a state of two- folding the bristles 15 at their centers, by which the respective bristles 15 are erected on the block head 12 in a state of increasing the internal pressure of the hollow parts 18 to a balloon form. The respective bristles 15 are 0.1 to 1.0 mm in their external diameter and are preferably 5 to 80% in the ratio at which the hollow parts occupy the sectional areas of the fibers. The atmospheric pressure difference between the inside and outside of the flocked hollow parts is preferably 10 to 1,000 hPa.

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 bristle bundle formed by bundling a plurality of bristles in a flocking hole of a flocking table.

[0002]

2. Description of the Related Art Generally, a toothbrush is composed of a flocking table, a grip portion, and a neck for connecting them, and a plurality of flocking holes formed in the surface of the flocking table. It is formed by implanting a bristle bundle of bristles by, for example, driving a flat wire.

The bristle implanted in the flocking table is a filament material made of a synthetic resin such as nylon, and has a spherical or tapered tip in order to improve the cleaning effect and the feeling of brushing. Although various shapes have been proposed, development of a new-feel toothbrush with improved cleaning effect and brush feeling is desired.

[0004] It is an object of the present invention to provide a new-feel toothbrush capable of improving the cleaning effect and the feeling of actual cleaning.

[0005]

SUMMARY OF THE INVENTION The present invention provides a toothbrush in which a bristle bundle of a plurality of bristles is planted in a flocking hole of a flocking table, wherein the bristle is a closed hollow cylindrical seal. For example, by bristling each bristle in the center in a state where the bristle bundle is folded in the center, the bristle is placed in the flocking table in a state in which the internal pressure of the hollow portion is increased in a balloon shape by, for example, implanting the bristle bundle in the flocking hole. The above object has been achieved by providing an upright toothbrush.

Here, when the condition of the toothbrush at the time of brushing the teeth is observed with a high-speed video or the like, dirt such as plaque adhered to the teeth is caused by bristle constituting the bristle bundle, and the action of whip-lashing the dirt. Turns out to have been removed. According to the present invention, the hollow cylindrical bristles are
Since the standing portion is erected on the flocking table in a balloon-like state with the internal pressure of the hollow portion increased, it is rich in elasticity suitable for knocking down dirt. Accordingly, dirt can be effectively removed by the bristles, and the real feeling of the brushing can be improved with a new feeling due to the elasticity of the bristles.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to preferred embodiments. As shown in FIG. 1, the toothbrush 10 of the present embodiment is a toothbrush body 1 of a toothbrush body including a grip portion 11, a hair implantation table 12, and a neck 13 connecting these.
A plurality of bristles 15 are bundled into a plurality of bristles 14 formed in the bristles 2 to form a bristles 16.

The grip 11, the flocking table 12, and the neck 13
Is made of, for example, a synthetic resin such as polypropylene or ABS resin, and a large number of flocked holes 14 are formed on the flat surface of the flocked portion 12 at predetermined intervals vertically and horizontally. In the flocked hole 14, the hair bundle 1 is folded in two at the central portion, and the flat wire 17 is sandwiched and driven into the folded portion.
6 are each planted.

According to this embodiment, the bristle 15 constituting each hair bundle 16 is a filament material made of a synthetic resin such as nylon as shown in FIGS. 2 (a) and 2 (b). It consists of a closed hollow cylindrical seal,
The outer diameter d is 0.1 to 1.0 mm, and the ratio of the hollow portion 18 to the fiber cross-sectional area is 5 to 80%. The bristles 15 are planted in the flocking holes 14 via the flat wires 17 in a state of being folded in two at the center (see FIG. 1),
As shown in FIG. 3, the folded portion 19 is crushed and the air inside is pushed out to the sealed hollow portions 18 on both sides,
As a result, the hollow portion 1 is slightly inflated into a balloon shape.
8 is placed upright on the flocking table 12 in a state where the pressure difference between the inside and outside is raised to 10 to 1000 hPa.

The outer diameter of the bristles 15 is 0.1 to
1.0 mm, preferably 0.15 to 0.25
mm is particularly preferable. If the outer diameter is less than 0.1 mm, the stiffness of the bristle tip is weakened and the cleaning effect is reduced. If the outer diameter is more than 1.0 mm, the stiffness of the bristle tip is too strong and the bristle is easily bent. However, there is a disadvantage that the effect of cleaning a gap in an oral cavity such as between teeth is reduced. The ratio of the hollow portion 18 of the bristle 15 to the fiber cross-sectional area is preferably 5 to 80%, and particularly preferably 10 to 40%. If the proportion of the fiber cross-sectional area is less than 5%, the thickness of the hollow cylindrical bristle becomes too thick, the elasticity becomes poor, and the effect of removing dirt decreases. If it is larger than 80%, there is a disadvantage that the thickness of the hollow cylindrical bristle becomes too thin and the hollow cylindrical structure is easily damaged. Further, when the bristle 15 is implanted in a state of being folded in two, the pressure difference between the inside and the outside of the hollow portion 18 is 10 to
It is preferably 1000 hPa, and 30 to 3
It is particularly preferable that the pressure is 00 hPa. When the pressure difference between the inside and outside is smaller than 10 hPa, the elasticity of the hollow cylindrical bristles is poor, and there is a disadvantage that the effect of removing dirt is reduced. When the pressure difference between inside and outside is larger than 1000 hPa, the hollow cylindrical structure is damaged, There is a disadvantage that durability is reduced due to fatigue of the bristle material.

Further, in order to form the bristle 15 into a hollow cylindrical sealed body whose both ends are closed, a cylindrical filament material having a hollow center portion in cross section is formed by bristle 15
After cutting to a desired length according to the planting height of the above, a method of obtaining the hollow cylindrical bristle 15 by adopting a method of, for example, applying edging by heating to both ends to close and seal both ends. be able to.

According to the toothbrush 10 of the present embodiment, the toothbrush can be brushed with a new feel, and the cleaning effect and the real feeling of brushing can be improved.

That is, according to the toothbrush 10 of the present embodiment, as shown in FIG. 4, the internal pressure of the hollow portion 18 of the bristle 15 of the bristle bundle 16 implanted in the flocking table 12 is increased in a balloon shape. It stands upright on the flocking table 12 and has a flexible elasticity called "whip effect" that is suitable for whiplashing and removing dirt, thereby efficiently removing dirt such as plaque. In addition, the unique elasticity of each of the bristles 11 provides a new feeling when brushing the teeth and also improves the feeling of brushing.

Further, according to the present embodiment, since the resilient end of the bristle comes into proper contact with the gums, the gums can be massaged without damaging the gums even if the brushes are slightly brushed.

Note that the present invention is not limited to the above-described embodiment, and various changes can be made. For example, the cross-section of a bristle need not be circular, but may be elliptical,
In addition to polygons and the like, irregular cross sections having irregularities may be used. Regarding the relationship between the outer layer of the bristle and the cross-sectional shape of the hollow portion, the outer layer and the hollow portion do not have to have the same shape. The relationship between the outer layer of the bristle and the axis of the hollow portion does not necessarily have to be concentric,
It may be eccentric. Also, the method of planting the bristles does not necessarily need to be a method of planting using a flat wire with the bristles folded at the center, and other planting methods can be adopted, and other than the planting method In the way
The bristles may be erected on the flocking table with the internal pressure of the hollow portion raised like a balloon.

[0016]

According to the toothbrush of the present invention, it is possible to brush a tooth with a comfortable new feeling while improving the cleaning effect and the feeling of actual brushing.

[Brief description of the drawings]

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

FIG. 2A is a perspective view illustrating a bristle used for a toothbrush according to an embodiment of the present invention, and FIG.
FIG. 3 is a perspective view of a state in which the bristle of FIG.

FIG. 3 is a conceptual diagram illustrating a state in which each bristle is implanted in a flocking hole.

FIG. 4 is a conceptual diagram illustrating a state in which a hair bundle composed of a large number of bristles is implanted in a hair implantation hole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Toothbrush 11 Gripping part 12 Flooding table 13 Neck 14 Flooding hole 15 Bristle 16 Hair bundle 17 Flat wire 18 Hollow part 19 Folding part

Claims (4)

[Claims] 1. A toothbrush having a bristle bundle in which a plurality of bristles are bundled in a flocking hole of a flocking table, wherein the bristle is formed of a closed hollow cylindrical sealing body and has a balloon-like hollow portion. A toothbrush that stands on a flocking table with its internal pressure increased. 2. The bristle stands on a flocking table in a state in which the internal pressure of the hollow portion is increased in a balloon-like manner by implanting the bristle bundle in the flocking hole in a state where each bristle is folded in half at the center. The toothbrush according to claim 1, wherein the toothbrush is provided. 3. The bristle has an outer diameter of 0.1 to 3.
3. The toothbrush according to claim 1, wherein the toothbrush is 1.0 mm, and a ratio of the hollow portion to the fiber cross-sectional area is 5 to 80%. 4. The toothbrush according to claim 1, wherein a pressure difference between the inside and outside of the hollow portion when the bristle is implanted is 10 to 1000 hPa.