JPWO2020044417A1 - Manufacturing method of children's toothbrush and children's toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush for children and a method for manufacturing a toothbrush for children, which can sufficiently eliminate a point where children hurt while brushing their teeth. A child's toothbrush 1 is a child's toothbrush 1 including a toothbrush head 4 in which a plurality of brush bristles 31 are planted, and the bristles of the brush bristles 31 are formed to be relatively shorter than those for an adult. The diameter of the brush bristles 31 is smaller than that for adults, and the tip of the brush bristles 31 is rounded. Specifically, in the child toothbrush 1, the hair length of the brush bristles 31 is within the range of 5.5 to 6.5 mm, the diameter of the brush bristles 31 is 0.1 mm or less, and the brush bristles 31 are present. The tip of the brush is rounded. [Selection diagram] Fig. 1

Description

The present invention relates to a child's toothbrush and a method for manufacturing a child's toothbrush.

A typical adult toothbrush fiber (brush bristles) has a diameter of 0.18 to 0.22 mm, whereas a child toothbrush fiber (brush bristles) has a diameter of 0.12 to 0.15 mm. Is the mainstream.
This is because thick fibers are hard and easily damage the gums of children, and they often hurt children when they polish them. On the other hand, if the diameter of the fiber is reduced to the extent that the child does not hurt at all, there arises a problem that the cleaning ability as a toothbrush, which is the original purpose, is insufficient.
For this reason, conventional toothbrushes for children have been devised in various ways, such as changing the structure of the toothbrush handle and changing the brush part from fiber to elastomer.

However, the cleaning effect on the tooth surface and between the teeth is insufficient, the massage effect on the gums is low, and the cost is high, which does not meet the social demands. In this way, many children's toothbrushes are limited to making the fiber diameter small enough to ensure cleanability, and the point that children hurt has not been completely eliminated.

Further, Patent Document 1 proposes a toothbrush that gradually changes the fiber diameter of a toothbrush from the tip to remove plaque in the gap (gingival groove) between teeth and teeth and plaque between teeth. ing. Patent Document 1 proposes a tapered toothbrush in which a tapered surface is formed at the tip of a synthetic resin fiber by a chemical treatment and the tip of a columnar fiber is thinned.

JP-A-2010-233781

As mentioned above, many children's toothbrushes are limited to reducing the fiber diameter to the extent that they are easy to clean, and the point that children hurt while brushing their teeth has not been completely eliminated. The current situation.

In order to solve this problem, a tapered surface is formed at the tip of the synthetic resin fiber of the toothbrush for children by a chemical treatment as described in Patent Document 1, and the tip of the columnar fiber is thinned. It is conceivable to apply the tapering process to children's toothbrushes.

However, there is a technical problem that when the taper treatment for thinning the tip of the fiber is performed, the tip of the fiber is sharpened as a result, and the point that children hurt while brushing their teeth cannot be sufficiently eliminated.

The present invention is to provide a child's toothbrush and a method for manufacturing a child's toothbrush, which can sufficiently eliminate the pain points that children have while brushing their teeth.

The children's toothbrush according to the first aspect of the present invention is a children's toothbrush including a toothbrush head in which a plurality of brush bristles are implanted, and the bristles of the brush bristles are formed to be relatively shorter than those for adults. The diameter of the brush bristles is smaller than that for adults, and the tip of the brush bristles is rounded.
Preferably, the plant children's toothbrush according to claim 1 uses synthetic resin fibers as a plurality of brush bristles.

The child toothbrush of the invention according to claim 2 is a child toothbrush including a toothbrush head in which a plurality of brush bristles are implanted, and the bristles of the brush bristles are within the range of 5.5 to 6.5 mm. Yes, the diameter of the brush bristles is 0.1 mm or less, and the tip portion of the brush bristles is rounded.

The method for manufacturing a child's toothbrush according to claim 3 is the method for manufacturing a child's toothbrush according to any one of claims 1 or 2, wherein the plurality of brush bristles are planted on the toothbrush head. After the first step and the first step, the second step of trimming the hair lengths of the plurality of brush bristles, and after the second step, the tips of the plurality of brush bristles are removed. The present invention includes a third step of rounding the tips of the plurality of brush bristles by pressing the brush against the rotating grindstone.

The method for manufacturing a child's toothbrush and a child's toothbrush according to the present invention has made it possible to sufficiently eliminate the pain that children have while brushing their teeth.

It is a perspective view of the child toothbrush which concerns on 1st Embodiment of this invention. It is a side view and the front view of the child toothbrush which concerns on 1st Embodiment of this invention. It is an enlarged view which shows the tip part of the brush bristles of the child toothbrush which concerns on 1st Embodiment of this invention in an enlarged manner. It is explanatory drawing explaining the size of the child toothbrush which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the manufacturing method of the child toothbrush which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the tooth brushing by the child toothbrush which concerns on 1st Embodiment of this invention.

<First Embodiment>
FIG. 1 is a perspective view of a child toothbrush according to the first embodiment of the present invention.
In FIG. 1, the child toothbrush 1 is composed of a base 2 and a brush 3.

In the substrate 2, the handle 21, the inclined portion 22, and the flocked base portion 23 are formed in this order from the base end side. A brush 3 is provided on the flocked base portion 23, which is the tip end portion of the substrate 2.
Although the inclined portion 22 is shown in FIG. 2, a straight portion without the inclined portion 22 is more appropriate.

The flocked base portion 23 and the brush 3 form a child toothbrush head 4. The brush 3 is formed by planting a plurality of brush bristles 31 at a plurality of locations of the flocking base portion 23. Synthetic resin fibers are used for the brush bristles 31. As the material of the synthetic resin fiber of the brush bristles 31, a polyamide resin such as 6,6-nylon, 6-nylon, 12-nylon, 6,10-nylon, and 6,12-nylon, and a polyolefin such as polyethylene and polypropylene. Polyester-based resins such as polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate are used.

2A is a side view of the child toothbrush 1 of FIG. 1, FIG. 2B is a front view of the child toothbrush 1 of FIG. 1, and FIG. 3 is an enlarged view of the tip of the brush bristles of the child toothbrush 1. FIG. 4 is an explanatory view illustrating the size of the child toothbrush 1 of FIG.

In FIGS. 2A and 2B, the substrate 2 is integrally formed of a resin such as a polypropylene resin, a polyacetal resin, or a polyoxymethylene resin. Further, the child toothbrush 1 is formed with a total length (L) in the range of L = 110.0 to 180.5 mm (see FIG. 4).

In FIG. 2A, the child toothbrush head 4 has a thickness (A) of A = 4.70 mm on the tip side of the flocking base portion 23 (see FIG. 4), and the base end side (handle side) of the flocking base portion 23. ) Is formed with a thickness (B) of B = 5.00 mm (see FIG. 4).
The thickness (B) on the base end side (handle side) is appropriately between B = 6.00 mm and 4.00 mm.
The thinner the B, the easier it is to get into the child's mouth, but if it is too thin, the part to be transplanted will not be sufficiently removed, so this degree is appropriate.
That is, the child toothbrush head 4, which has a thickness (B) on the base end side (handle side) thinner than that of an ordinary toothbrush, is also formed as small as possible.
Specifically, it is formed in a size that keeps the distance from the root of the flocked portion as small as possible. Specifically, it is appropriate that the size of the margin from the root of the flocked portion to the head direction and the left-right direction is between 0.30 and 1.50 mm.

The flocked surface of the brush bristles 31 of the child toothbrush head 4 has a length (C) shown in FIG. 2 (a) of C = 14.50 mm and a width (D) shown in FIG. 2 (b) of D = 8. It is formed at 28 mm (see FIG. 4).

The brush bristles 31 of the children's toothbrush head 4 have a bristles length (E) of E = 5.5 to 6.5 mm, which is a length protruding from the surface of the flocking base portion 23 shown in FIG. 2 (a). It is formed in the range of (see FIG. 4).
Since the length of the hair is short as described above, it is possible to penetrate deep into the mouth of a toddler or the like with a small mouth (who does not open the mouth wide), and it is possible to prevent unpolished hair.
For this purpose, it is better to have the hair as short as possible, but if it is left as it is, the hair may become stiff and the infant may hurt. Therefore, the following measures have been taken.
At present, E = 5.5 to 6.5 mm is the optimum value among various constraints. However, even if E = 3.0 mm to 8.0 mm, there is a certain effect.

As shown in FIG. 3, the brush bristles 31 are formed under the condition that the diameter (φ) is φ ≦ 0.10 mm (see FIG. 4).
Since the diameter is reduced in this way, the elasticity of the hair itself can be increased. If it is made thinner, the elasticity can be increased and the length of E can be shortened.
However, when it becomes thin, the brush bristles 31 stick to the gums and the like, which in turn causes pain.
The tip of the brush bristles 31 is rounded to relieve the pain.
However, there is a certain limit to rounding, and at present, φ is considered to be in the range of 0.07 mm to 0.15 mm.
At present, the optimum value is considered to be in the range of φ = 0.09 mm to 0.11 mm.
However, if a softer material can be used for the brush bristles 31, it may change.
In addition, because the diameter is reduced, it is possible to plant hair densely.
As a result, multiple hairs hit the gums at the same time, and it is possible to suppress pain.
Specifically, 140 brushes, which are planted by folding 70 brushes in half, are the number of brush bristles 31 per bundle of brushes. This is more than twice the normal amount. That is, in the case of a normal toothbrush, the number of toothbrushes per bundle is about 25.
Here, the dense flocking of the present invention means that the number of flocked hairs per bundle is 50 or more. A more appropriate value is 60 or more, and an optimum value is 75 or more.
In the example of FIG. 2, two of these bundles are arranged side by side on the leading side, and five rows of three rows are arranged next. Therefore, in the example of FIG. 2, 17 bundles exist.
It is more preferable that the flocked base portion 23 portion of the flocked portion can be made thinner than the inclined portion 22 in order to make the flocked portion thinner.

FIG. 5 is an explanatory diagram showing a method for manufacturing a child toothbrush 1 according to the first embodiment of the present invention.
When manufacturing a child toothbrush 1, brush bristles 31 are planted at a plurality of locations on the flocked surface of the flocked base portion 23 of the base 2. Next, a plurality of brush bristles 31 are cut with a bristles length of 7.0 mm.

After that, as shown in FIG. 5, the tips of the plurality of brush bristles 31 are manually pressed against the rotating grindstone 61 of the grinder 6 dedicated to toothbrush processing for a predetermined time by hand. By changing the direction of the handle 21 up, down, left and right, the tips of the plurality of brush bristles 31 are rounded.

FIG. 6 is an explanatory diagram showing tooth brushing with the child toothbrush 1 according to the first embodiment of the present invention.
As shown in FIG. 6, in the present embodiment, when the child's toothbrush 1 is used for brushing a child's tooth, the brush bristles 31 are in a state where the plurality of brush bristles 31 of the child's toothbrush head 4 are applied to the teeth 71 of the child 7. The tip of the child 7 came into contact with the toothpaste 72 of the child 7 with an appropriate pressure, and the tips of a plurality of brush bristles were rounded, so that the point that the child 6 hurts while brushing his teeth can be sufficiently eliminated. ..
Although the toothbrush is inserted from the back tooth side in FIG. 6, in reality, it is brushed from the front tooth side.

Hereinafter, the configuration and operation of such an embodiment will be summarized. The child toothbrush 1 is a child toothbrush 1 including a toothbrush head 4 in which a plurality of brush bristles 31 are planted, and the brush bristles 31 of the brush bristles 31. The bristles are formed to be relatively short compared to those for adults, the diameter of the brush bristles 31 is formed to be smaller than that for adults, and the tip portion of the brush bristles 31 is rounded.

Further, in the child toothbrush 1, the bristles of the brush bristles 31 are in the range of 5.5 to 6.5 mm, the diameter of the brush bristles 31 is 0.1 mm or less, and the tip portion of the brush bristles 31 is formed. Is rounded and formed.

The method for manufacturing the children's toothbrush 1 is a first step of implanting the plurality of brush bristles 31 on the toothbrush head 4, and a first step of trimming the bristles of the plurality of brush bristles 31 after the first step. The second step and the third step of rounding the tips of the plurality of brush bristles 31 by pressing the tips of the plurality of brush bristles 31 against the rotating grindstone 61 after the second step. To be equipped. By such a manufacturing process, the in-service toothbrush 1 can be efficiently manufactured.

The structure, manufacturing system, material, connection of each member, chemical substance, etc. of the present invention can be variously changed without changing the gist of the present invention.

As the material, synthetic resin, metal, plastic, FRP, wood, animal hair and the like can be freely selected.

For example, it is possible to combine two or more members into one, and conversely, it is also possible to configure one member from two or more other members and connect them.

Moreover, the above-mentioned first embodiment is merely the best or close form at present.
Further, the manufacturing order and the like can be appropriately changed as long as they have a predetermined effect.

<Definition, etc.>
As the brush hair 3 in the present invention, various applications such as animal hair and plant fiber can be applied in addition to synthetic resin fibers.

1 ... Children's toothbrush 2 ... Base 3 ... Brush 4 ... Children's toothbrush head 5 ... Hand 6 ... Grinder 7 ... Children 21 ... Handle 22 ... Inclined part 23 ... Flocking base part 31 ... Brush bristles 61 ... Whetstone 71 ... Teeth 72 ... gum

Claims (3)

A children's toothbrush having a toothbrush head in which a plurality of brush bristles are implanted, wherein the bristles of the brush bristles are formed to be relatively shorter than those of an adult, and the diameter of the brush bristles is formed to be smaller than that of an adult. A toothbrush for children, characterized in that the tip of the brush bristles is rounded and formed. A children's toothbrush having a toothbrush head in which a plurality of brush bristles are implanted, wherein the bristles have a bristles in the range of 5.5 to 6.5 mm and the diameter of the brush bristles is 0.1 mm or less. A toothbrush for children, characterized in that the tip of the brush bristles is rounded. The method for manufacturing a children's toothbrush according to any one of claims 1 or 2, wherein the first step of implanting the plurality of brush bristles on the toothbrush head, and after the first step, said After the second step of trimming the bristles of the plurality of brush bristles and the second step, the tips of the plurality of brush bristles are pressed against the rotating grindstone to obtain the tips of the plurality of brush bristles. A method for manufacturing a child's toothbrush, which comprises a third step of rounding a portion.

Images