JP2021122346A - toothbrush - Google Patents

Abstract

To provide a toothbrush capable of providing more convenience to a user when using the toothbrush.SOLUTION: A toothbrush 1 includes: a long-sized neck 11 having elasticity at a degree to return to the original shape when not bitten; a head 12 provided at the end of the neck 11, having a larger width in a long direction than the neck 11, and having elasticity at a degree to be dented when bitten with teeth and to return to the original shape when not bitten; and a brush 13 dented when bitten with teeth, and provided both on the surface and on the rear face of the head.SELECTED DRAWING: Figure 1

Description

The present invention relates to a toothbrush.

Conventionally, a toothbrush having elastic hairs on the front side and the back side of the head and having the head inclined with respect to the handle is known (see Patent Document 1).

JP-A-2017-221602

By the way, the technique described in Patent Document 1 always requires the user to use his / her hand when using the toothbrush, and does not provide more convenience to the user.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a toothbrush that can provide more convenience to a user when using the toothbrush.

In order to solve the above problems, the toothbrush according to one aspect of the present invention is provided at the elongated neck and the end of the neck, and the width in the elongated direction is larger than that of the neck to provide elasticity. It includes a head to be held and brushes provided on both the front surface and the back surface of the head.

In the above toothbrush, the head may have elasticity enough to be dented when bitten by teeth and to return to the original shape when not bitten.

In the above toothbrush, the width of the widest part of the neck may be less than 1 cm.

In the above toothbrush, the neck may have elasticity enough to be dented when bitten by teeth and to return to the original shape when not bitten.

In the above toothbrush, the head may be a horizontally long rectangle when the long direction of the toothbrush is vertical.

In the above toothbrush, the thickness of the neck and the head may be the same.

In the above toothbrush, the head may be made of platinum silicon.

In the above toothbrush, the neck may be made of platinum silicone.

In the above toothbrush, the brush may be made of platinum silicon.

In the above toothbrush, the head has a plurality of holes penetrating perpendicularly in the thickness direction, and the brush may have a plurality of hair bundles of the brush fixed to the plurality of holes.

In the above toothbrush, each of the plurality of holes has a central portion narrower than the end portion, and the brush has a fixing portion at the central portion of each of the bristles of the brush, which matches the diameter of the central portion of the holes. Each may be fitted into the central portion of the plurality of holes and fixed to the head.

In the above toothbrush, each of the plurality of holes has a central portion narrower than the end portion, the brush has a knot at the central portion of each of the bristles of the brush, and each of the knots is fitted into the central portion of the plurality of holes. It may be fixed to the head.

In the above toothbrush, each of the plurality of holes has a central portion narrower than the end portion, and the brush is composed of a plurality of bristles having an intersection in which two bent bristles intersect each other at the bent portion. Each of the intersections of the plurality of hair bundles may be fitted into the central portions of the plurality of holes and fixed to the head.

In the above toothbrush, each of the plurality of holes has a central portion narrower than the end portion, and the brush may have a fixing member at the central portion of each of the bristles of the brush, which matches the diameter of the central portion of the holes. good.

In the above toothbrush, the brush has a knot at the center of each of the bristles of the brush, and a fixing member may be provided at the knot.

In the above toothbrush, the brush has an intersection in which each of the bristles of the brush is divided into two, and the central portion of each of the two divided bristles is intersected in a V shape. May be provided with a fixing member.

In the above toothbrush, the neck has an annular portion at the end opposite to the head, the annular portion has an opening, and the toothbrush has a member that passes through the opening and the largest portion is 3 cm or more. You may.

In the above toothbrush, the toothbrush may have a length of 7 to 12 cm in the long direction.

As described above, according to the present invention, since the toothbrush is provided with the brush on both the front surface and the back surface of the head, the user can bite the toothbrush and bite the brush without using a hand. You can move your jaw to grind your teeth in the state, and you can move it in your mouth using your tongue or the like. In addition, since the toothbrush has elasticity in the head, it is difficult to damage the mouth when chewing the toothbrush and holding it in the mouth, and the user can chew the toothbrush without hesitation and chew it. It can be held in the mouth as it is, and each operation can be performed more easily. Therefore, when using the toothbrush, it is possible to use the toothbrush without having the user use a hand, and it is possible to provide more convenience to the user.

It is a perspective view of the toothbrush which concerns on one Embodiment of this invention. It is a side view of the toothbrush which concerns on one Embodiment of this invention. It is a top view of the toothbrush which concerns on one Embodiment of this invention. It is a perspective view of the toothbrush when the annular member is provided which concerns on one Embodiment of this invention. (A) and (b) are schematic views on the method of fixing a toothbrush brush according to an embodiment of the present invention. (A) to (c) are schematic views on the method of fixing a toothbrush brush according to an embodiment of the present invention. It is a figure which shows an example of the use mode of the toothbrush which concerns on one Embodiment of this invention.

Hereinafter, the toothbrush according to one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a toothbrush 1 according to an embodiment of the present invention. FIG. 2 is a side view of the toothbrush 1 according to the embodiment of the present invention. FIG. 3 is a plan view of the toothbrush 1 according to the embodiment of the present invention. As shown in FIGS. 1 to 3, the toothbrush 1 includes a neck 11, a head 12, and a brush 13, and the neck 11 and the head 12 are connected to each other, and the front surface and the back surface of the head 12 are connected. Brushes 13 are provided on both sides. The toothbrush 1 may further include an annular portion 111 at an end of the neck 11 opposite to the head 12. 1 to 3 show an example in which the annular portion 111 is provided, but the annular portion 111 is not an indispensable configuration. The toothbrush 1 can be used by the user simply holding it in the mouth without using a hand, or can be used by the user holding the neck 11 with a hand or a finger.

As shown in FIG. 3, the toothbrush 1 has a length D in the elongated direction of 7 to 12 cm, preferably 10.5 cm. As shown in FIG. 2, the thickness t of the toothbrush 1 is preferably the same in the neck 11 and the head 12 within an error range, but may be different. As shown in FIG. 2, the thickness t of the toothbrush 1 can be 0.26 to 0.6 cm, preferably 0.4 cm.

The cervical portion 11 has an elongated shape, for example, a cube, a rectangular parallelepiped, a triangular prism, a triangular prism, a quadrangular prism, a quadrangular pyramid, a cylinder, a cone, etc. Neck 11, as shown in FIG. 3, may be uniform width W _1. A conventional toothbrush generally has a handle portion having a width wider than the neck in the longitudinal direction of the toothbrush, following the head and neck, but the present invention does not have a handle portion.

As shown in FIG. 3, the neck portion 11 has a width W ₁ of preferably less than 1 cm, more preferably 0.5 cm. When the width W _{1 of the} neck 11 is not uniform, it is preferably less than 1 cm, more preferably 0.5 cm in the widest part. The length of the neck portion 11 in the longitudinal direction is preferably 5 to 10 cm, more preferably 8 cm. The neck portion 11 may have elasticity enough to be dented when bitten by teeth and to return to the original shape when not bitten.

The neck portion 11 is made of a resin, for example, a saturated polyester resin, platinum silicon, or the like, but the neck portion 11 is not limited thereto. The neck 11 is preferably made of platinum silicone.

The neck portion 11 can further include an annular portion 111 having an opening 112 at an end opposite to the head portion 12, which will be described later. The annular portion 111 may be separable or integral with the neck 11. Annular portion 111, as shown in FIG. 3, it is possible to increase the width _{W 2} relative to the longitudinal direction of the toothbrush 1 than the neck 11, the width _{W 2} of the annular portion 111 is preferably 1cm or more, More preferably, it is 1 cm. As shown in FIG. 3, the opening 112 has a length d in the elongated direction of 2 cm or less, preferably 1 cm or less. As shown in FIG. 4, the toothbrush 1 may include a member 113 that passes through the opening 112 at the opening 112.

The member 113 may pass through the opening 112, and may be, for example, a string-shaped member, a thread-shaped member, a flexible annular member, a solid annular member, or the like. The member 113 is preferably a flexible annular member or a solid annular member having stylistic properties. The member 113 preferably has a size that can prevent the user from swallowing the toothbrush 1.

The annular member has a size that prevents the user from swallowing the toothbrush 1, for example, having a major axis of 3 to 5 cm. The annular member can preferably be a circle. When the annular member is, for example, a circle, the outer diameter is preferably 3 to 5 cm. The annular member is preferably circular, with an outer diameter of 3.2 cm, an inner diameter of 2.8 cm, and a side width of 0.2 cm. The member 113 is preferably made of a material having excellent durability. , Member 113 may be made of, for example, plastic or platinum silicon. The member 113 is removable.

The head portion 12 is an elastic member provided at the end of the neck portion 11 and having a width of the toothbrush 1 in the elongated direction larger than that of the neck portion 11. The head portion 12 includes all shapes, for example, a quadrangle, a rectangle, a square, a triangle, a circle, an ellipse, a rhombus, a fan shape, a drop shape, a heart shape, a star shape, and the like, and the shape when viewed in a plane is preferably a quadrangle. Of the above, more preferably, it is a rectangular plane that is horizontally long when the long direction of the toothbrush 1 is vertical. For the head 12, for example, the aspect ratio of the toothbrush 1 in the longitudinal direction may be 1: 1 to 2: 3, preferably 5: 6. For example, the head 12 can be 2.5 cm in length and 3.0 cm in width. The head 12 can have elasticity enough to be dented when bitten by teeth and to return to the original shape when not bitten. The head 12 may be separable or integral with the neck 11.

The head 12 is made of a resin, for example, a saturated polyester resin, platinum silicon, or the like, but the head 12 is not limited thereto. The head 12 is preferably made of platinum silicon.

The materials of the neck 11 and the head 12 may be the same or different.

The brush 13 is a plurality of hair bundles provided on the front surface and the back surface of the head 12. The brush 13 has a brush 131 on the front surface of the head 12 and a brush 132 on the back surface of the head 12. The lengths of the brush 131 and the brush 132 are preferably the same within an error range, but may be different. As shown in FIG. 2, the length l _{1 of the} portion extending from the head 12 of the brush 131 is preferably 1 cm or less. Further, as shown in FIG. 2, the length l _{2 of the} portion extending from the head 12 of the brush 132 is also preferably 1 cm or less.

The material of the brush 13 is a chemically synthesized filament, natural hair (animal hair), etc., for example, nylon, saturated polyester resin, polyptylene, polypropylene, silicone rubber, pig hair, horsehair, padger (anaguma hair), etc. be. The materials of the brush 131 and the brush 132 are preferably the same, but may be different.

The shape of the brush 13 is, for example, a multi-tuft type, a tuft type, a straight type, a concave type, a convex type, a rolling type, or a tuftent type, and is preferably a multi-tuft type or a straight type. It is preferable that the brush 131 and the brush 132 have substantially the same shape.

It is preferable that the thickness of the bristles of the brush 13 is substantially the same in the brush 131 and the brush 132. The shape of the tip of the brush 13 is, for example, a horizontal type, an oblique type, a circular type, a spherical type, a pointed type, or the like, and is preferably a circular type or a spherical type.

The method of arranging the brush 13 on the head 12 is, for example, multi-stretching, dense planting, multi-hair bundle planting, or sparse hair bundle planting. As shown in FIG. 3, the brush 13 is preferably provided in 9 rows and 12 columns.

When the head 12 is made of a saturated polyester resin, the brush 13 is preferably provided about 0.1 cm or more inward from the edge of the head 12, but is not limited thereto. When the head 12 is made of platinum silicon, the brush 13 is preferably provided about 0.25 cm or more inward from the edge of the head 12, but is not limited to this.

As shown in FIGS. 5 and 6, the brush 13 may be provided with a plurality of holes 121 in the head 12 that vertically penetrate the head 12 in the thickness direction so as to pass through the holes 121. That is, the brush 13 may be provided so as to penetrate the head 12.

The brush 13 may be provided on the head 12 by being fixed to the holes 121 provided on the head 12.

The hole 121 of the head 12 has a central portion narrower than the end portion, and the brush 13 has a portion of the diameter of the hair bundle of the brush 13 substantially equal to the diameter of the central portion of the hole 121 of the head 12. It may be fixed to the head 12 by matching. At this time, the central portion of the hole 121 does not necessarily have to be the center, and the central portion of the hole 121 may be closer to either the front surface side or the back surface side of the head portion 12.

As shown in FIG. 5, the hole 121 of the head portion 12 has a central portion narrower than the end portion, and the brush 13 has the diameter and substance of the central portion of the hole 121 in the central portion of each of the hair bundles of the brush 13. There may be fixed portions 1301 that coincide with each other, and each of the fixing portions 1301 may be fitted into the central portion of the plurality of holes 121 and fixed to the head portion 12. At this time, the central portion of the hole 121 does not necessarily have to be the center, and the central portion of the hole 121 may be closer to either the front surface side or the back surface side of the head portion 12.

For example, as shown in FIG. 5A, the brush 13 connects the central portions of the hair bundles of the brush 13 with the tied central portions as the fixing portions 1301, and each of the fixing portions 1301 is the head 12. It may be fixed to the head 12 by fitting it into the central portion of the plurality of holes 121 of the brush 13, and as shown in FIG. 5 (b), in the plurality of hair bundles of the brush 13, the two bent hair bundles are formed. The intersections intersected with each other at the bent portions may be used as the fixing portions 1301, and each of the fixing portions 1301 may be fixed to the head 12 by fitting into the central portions of the plurality of holes 121 of the head 12.

As shown in FIG. 6, the brush 13 may have a fixing member 1302 at the center of each of the hair bundles of the brush 13. The fixing member 1302 fixes the hair bundle of the brush 13 and fixes the hair bundle of the brush 13 to the head 12. For example, the fixing member 1302 has a width of the widest portion of the fixing member 1302 substantially matching the diameter of the central portion of the hole 121 of the head portion 12.

The hole 121 of the head 12 has a central portion narrower than the end portion, and the brush 13 has a fixing member 1302 in which the diameter of the central portion of the hole 121 substantially matches the central portion of each of the hair bundles of the brush 13. Each of the fixing members 1302 may be fitted into the central portion of the plurality of holes 121 and fixed to the head 12.

The fixing member 1302 is preferably a flat wire (bundle) or a substitute thereof. The flat wire (bundle) can be used by forming a metal piece (brass or brass) into a ring with a thickness of about 0.24 mm. In fixing the hair bundle of the brush 13, instead of the flat wire (bundle metal), a resin, for example, a saturated polyester resin or a fixing member 1302 made of platinum silicon may be used.

For example, as shown in FIG. 6A, the brush 13 is provided with a flat line (bundle) or a substitute thereof at the center of each of the hair bundles of the brush 13, and the flat line (bundle) or a substitute thereof is provided. Each of the hairs may be fixed to the head 12 by fitting each of the hair bundles 121 into the central portions of the plurality of holes 121 of the head 12, and as shown in FIG. 6B, the central portions of the hair bundles of the brush 13 may be fitted. A flat wire (bundle) or a substitute thereof is provided in the central portion tied and tied, and each of the flat wire (bundle) or the substitute thereof is fitted into the central portion of the plurality of holes 121 of the head 12. It may be fixed to the head 12, and as shown in FIG. 6 (c), the hair bundle of the brush 13 is divided into two, and the central portion of each of the two divided hair bundles intersects in a V shape. A flat wire (bundle) or a substitute thereof is provided in each of the crossed central portions, and each of the flat wire (bundle) or the substitute thereof is fitted into the central portion of the plurality of holes 121 of the head 12. And may be fixed to the head 12.

As shown in FIG. 7, the toothbrush 1 may be used by biting with teeth without using hands. The toothbrush 1 may be used by moving the jaw so as to grind the teeth while biting the brush 13 without using a hand. The toothbrush 1 may be used by moving it in the mouth using a tongue or the like without using a hand.

With the above configuration, the toothbrush 1 can bite the brush 13 without spilling the toothbrush 1 from the mouth, move the jaw so as to grind the teeth while biting the brush 13, and the mouth. It is possible to move it using a tongue or the like inside. As a result, the toothbrush 1 enables the user to brush his teeth without using his hands, and enables the user to brush his teeth simply by putting the toothbrush in his mouth and chewing. This makes it easier to brush your teeth longer than usual and brush your teeth more often than usual, making your teeth stronger, easier to remove food debris between your teeth, removing plaque, and jaws. It is possible to make the toothbrush durable and provide a higher convenience to the user when using the toothbrush. Further, since the toothbrush 1 enables the user to brush the teeth without using his / her hands, it is possible for the user to perform different tasks while brushing the teeth, and it is possible to provide the user with higher convenience. ..

The toothbrush 1 is provided on the elongated neck and the end of the neck, and the width in the elongated direction is larger than that of the neck, and the toothbrush 1 has elasticity and both the front surface and the back surface of the head. It is provided with a brush provided in. Since the toothbrush 1 is provided with the brush 13 on both the front surface and the back surface of the head, the user can bite the toothbrush 1 and grind the tooth with the brush 13 bitten without using a hand. You can move your jaw and move it in your mouth using a tongue or the like. Further, since the head 12 of the toothbrush 1 has elasticity, it is difficult for the user to bite the toothbrush 1 when chewing the toothbrush 1 and when holding the toothbrush 1 in the mouth. It can be held in the mouth while being bitten, and each operation can be performed more easily. This allows the toothbrush 1 to allow the user to brush their teeth without using their hands, and the user simply puts the toothbrush 1 in his mouth and chews to strengthen his teeth and easily remove plaque between his teeth. It can be removed, plaque removed, and the jaws toughened, providing greater convenience to the user when using the toothbrush. Further, since the toothbrush 1 enables the user to brush the teeth without using his / her hands, it is possible for the user to perform different tasks while brushing the teeth, and it is possible to provide the user with higher convenience. ..

The toothbrush 1 may have elasticity such that the head 12 is dented when bitten by teeth and returns to the original shape when not bitten. As a result, the inside of the mouth is not easily damaged when the toothbrush 1 is chewed and held in the mouth, so that the user can chew the toothbrush 1 without hesitation and hold the toothbrush 1 in the mouth while being chewed. Even if the toothbrush 1 is not used, the movement in the mouth such as clenching the toothbrush 1 and holding the toothbrush 1 in the mouth while being chewed becomes easier, and the user is provided with higher convenience when using the toothbrush.

The toothbrush 1 may have no handle and the neck 11 may be less than 1 cm wide, whereby the toothbrush 1 is only the portion of the conventional toothbrush that holds in the mouth and does not require the use of hands. It is possible to make it easier to hold the toothbrush 1 without spilling the toothbrush 1 from the mouth, and to provide a higher convenience to the user when using the toothbrush.

The toothbrush 1 may have a horizontally long rectangle when the head 12 is vertically oriented in the elongated direction of the toothbrush 1. This makes it easier to hold the brush 13 and also makes it easier to balance the toothbrush 1 when the brush 13 is held, so that the user can spill the toothbrush 1 from his mouth without using his hands. Without having to bite the brush 13, the jaw can be moved to bite the brush 13 and to grind the teeth while the brush 13 is bitten. This allows the toothbrush 1 to allow the user to brush their teeth without using their hands, and the user simply puts the toothbrush in his mouth and chews to strengthen the teeth and easily remove the plaque between the teeth. It can remove plaque and make the jaws stronger. Further, since the toothbrush 1 enables the user to brush the teeth without using his / her hands, it is possible for the user to perform different tasks while brushing the teeth, and it is possible to provide the user with higher convenience. ..

The toothbrush 1 may have substantially the same thickness t of the neck 11 and the head 12. This makes it easier for the user to bite the toothbrush 1 and hold it in the mouth while being bitten without using a hand, which can provide a higher convenience to the user when using the toothbrush. can.

The toothbrush 1 may consist of one or more or all of the neck, head, and brush made of platinum silicone. This makes it possible to provide a hygienic toothbrush 1 having antibacterial properties. Further, this makes it possible to provide a safer toothbrush 1 that is less likely to damage the teeth and gums even if the toothbrush 1 is strongly chewed. This makes it possible to apply color to the toothbrush 1.

The toothbrush 1 may have a plurality of holes 121 that penetrate the head 12 perpendicularly to the thickness direction of the head 12, and the brush 13 may be fixed to the plurality of hair bundles of the brush 13 in the plurality of holes 121, respectively. You may do it. As a result, when the brush 13 is provided on both the front surface and the back surface of the head 12, it is not necessary to fix the brush 13 to each of the front surface side and the back surface side of the head 12, and the thickness of the head 12 is increased by that amount. Since it is possible to make the toothbrush smaller, it becomes easier to bite the toothbrush 1 and hold it in the mouth while being bitten, and it is possible to provide a higher convenience to the user when using the toothbrush.

The toothbrush 1 may have the central portion of each of the plurality of holes 121 narrower than the end portion, and the fixed portion 1301 at the central portion of each of the bristles of the brush 13 substantially matches the diameter of the central portion of the hole 121. Each of the fixing portions 1301 may be fitted into the central portion of the plurality of holes 121 and fixed to the head portion 12. As a result, when the brush 13 is provided on both the front surface and the back surface of the head 12, it is not necessary to fix the brush 13 to each of the front surface side and the back surface side of the head 12, and the thickness of the head 12 is increased by that amount. Since it is possible to make the toothbrush smaller, it becomes easier to bite the toothbrush 1 and hold it in the mouth while being bitten, and it is possible to provide a higher convenience to the user when using the toothbrush.

The toothbrush 1 may have the central portion of each of the plurality of holes 121 narrower than the end portion, and the fixing member 1302 at the central portion of each of the bristles of the brush 13 substantially matches the diameter of the central portion of the hole 121. May have. The fixing member 1302 allows each of the bristles of the brush 13 to be fixed to the plurality of holes 121, whereby when the brush 13 is provided on both the front surface and the back surface of the head 12, the front surface side of the head 12 and the front surface side of the head 12 and the back surface of the head 12 are provided. Since it is not necessary to fix the brush 13 to each of the back surfaces and the thickness of the head 12 can be reduced by that amount, it is easier to bite the toothbrush 1 and hold it in the mouth while being bitten. Therefore, it is possible to provide a higher convenience to the user when using the toothbrush.

The toothbrush 1 may have an annular portion 111 at the end of the neck 11 opposite to the head 12 and an opening 112 at the annular portion 111, with the largest portion of the toothbrush 1 being 3 cm or more. The member 113 may have a member 113 passing through the opening 112. By having the member 113 passing through the opening 112 whose largest portion is 3 cm or more, the toothbrush 1 can prevent accidental ingestion when the user uses the toothbrush 1 without using his / her hands, and by any chance accidental ingestion can be prevented. Even if it is about to happen, the member 113 can easily take it out. Thereby, the toothbrush 1 can provide a higher convenience to the user.

The toothbrush 1 may have a length D in the long direction of 7 to 12 cm. By setting the length D in the long direction to 12 cm or less, the toothbrush 1 is shorter than the conventional toothbrush, is less likely to get in the way even when it is held in the mouth, and the weight of the short length is also lightened. You can reduce fatigue even while holding it in your mouth. Further, by setting the length D of the toothbrush 1 in the long direction to 7 cm or more, it is possible to prevent accidental ingestion when the user uses the toothbrush 1 without using his / her hands. As a result, it becomes easier to hold the toothbrush 1 without spilling the toothbrush 1 from the mouth without using a hand, and the toothbrush 1 can provide a higher convenience to the user.

The toothbrush 1 may have the same length, material, shape, and hair thickness of the brush 131 on the front surface of the head 12 and the brush 132 on the back surface of the head 12. As a result, when brushing the teeth with the brush 13 in addition, it is possible to make it difficult for the upper and lower teeth to be brushed, and it is possible to provide a higher convenience to the user.

1 Toothbrush 11 Neck 111 Circular part 112 Opening 113 Member 12 Head 121 Hole 13 Brush 131 Front surface brush 132 Back surface brush 1301 Fixing part 1302 Fixing member

Claims (18)

The long neck and
An elastic head provided at the end of the neck and having a width in the elongated direction larger than that of the neck.
A toothbrush comprising a brush provided on both the front and back surfaces of the head. The toothbrush according to claim 1, wherein the head is dented when chewed with teeth and has elasticity to return to the original shape when not chewed. The toothbrush according to claim 1 or 2, wherein the width of the widest portion of the neck is less than 1 cm. The toothbrush according to any one of claims 1 to 3, wherein the neck is dented when chewed with teeth and has elasticity to return to the original shape when not chewed. The toothbrush according to any one of claims 1 to 4, wherein the head is a horizontally long rectangle when the long direction of the toothbrush is vertical. The toothbrush according to any one of claims 1 to 5, wherein the thickness of the neck and the thickness of the head are the same. The toothbrush according to any one of claims 1 to 6, wherein the head is made of platinum silicon. The toothbrush according to any one of claims 1 to 7, wherein the neck is made of platinum silicon. The toothbrush according to any one of claims 1 to 8, wherein the brush is made of platinum silicon. The head has a plurality of holes that penetrate perpendicularly in the thickness direction, and the brush has a plurality of hair bundles of the brush fixed to the plurality of holes, respectively, according to any one of claims 1 to 9. Toothbrush described in. Each of the plurality of holes has a central portion narrower than the end portion, and the brush has a fixing portion in the central portion of each of the bristles of the brush, which matches the diameter of the central portion of the hole. The toothbrush according to claim 10, wherein each of the toothbrushes is fitted into the central portion of the plurality of holes and fixed to the head. Each of the plurality of holes has a central portion narrower than the end portion, the brush has a knot at the central portion of each of the hair bundles of the brush, and each of the knots is located at the central portion of the plurality of holes. The toothbrush according to claim 10 or 11, which is fitted and fixed to the head. Each of the plurality of holes has a central portion narrower than the end portion, and the brush is composed of a plurality of hair bundles having an intersection in which two bent hair bundles intersect each other at the bent portion. 10. The toothbrush according to claim 10 or 11, wherein each of the intersections of the plurality of hair bundles is fitted into the central portion of the plurality of holes and fixed to the head. Claim each of the plurality of holes has a central portion narrower than an end portion, and the brush has a fixing member at the central portion of each of the bristles of the brush, which matches the diameter of the central portion of the holes. 10. The toothbrush according to 10. The toothbrush according to claim 14, wherein the brush has a knot at the center of each of the bristles of the brush, and the fixing member is provided at the knot. The brush has an intersection in which each of the hair bundles of the brush is divided into two, and the central portion of each of the two divided hair bundles is intersected in a V shape. The toothbrush according to claim 14, wherein the fixing member is provided on the toothbrush. The neck is provided with an annular portion at an end opposite to the head, the annular portion has an opening, and the toothbrush is a member that passes through the opening and has a largest portion of 3 cm or more. The toothbrush according to any one of claims 1 to 16. The toothbrush according to any one of claims 1 to 17, wherein the toothbrush 1 has a length of 7 to 12 cm in the elongated direction.

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