Ultra-fine filament dense type toothbrush in units of thousands or tens of thousands of filaments

Abstract

To provide a toothbrush having a structure for improving the aesthetics of teeth further. 【Solution means】 The toothbrush of the present invention has a brush part in which ultrafine filaments are bundled on one surface of the head, and a handle part connected to the head. The ultrafine filaments of the brush part are densely bundled and arranged so that there is no gap between the ultrafine filaments, and the diameter of each ultrafine filament is characterized by being 0.2 mm or less and 0.02 mm or more.

Description

Technical Field

[0001] The present invention relates to an ultra-fine filament dense type toothbrush in units of thousands or ten thousands of filaments, which can provide white teeth to users through toothbrushing and also suppress bad breath through tongue brushing.

Background Art

[0002] In order to create a healthy and beautiful impression, toothbrushes are sold for maintaining clean teeth and removing pigments and dental plaque deposited on tooth surfaces. As toothbrushes for improving such tooth aesthetics, there are those with a structure in which a tooth surface polishing bag is put on the brush part of the toothbrush (see, for example, Patent Document 1), and tooth surface cleaning tools equipped with a melamine resin foam processed into a shape that enters the oral cavity (see, for example, Patent Document 2). Also known is a toothbrush (see, for example, Patent Document 3) that can uniformly and evenly press against teeth and gums and has a fiber group unit in which a plurality of extremely thin fibers that kill periodontal bacteria are uniformly planted to form a group.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a toothbrush having a structure in which a tooth surface polishing bag is put on a brush part of a method of polishing a tooth surface, when the polishing bag is formed of a soft material, the bag may be relatively easily torn, making it difficult to adjust the strength of brushing. In a tooth surface cleaning tool provided with a melamine resin foam, there is a concern about the harm to environmental hormones caused by the melamine resin, and there may be a problem especially when used in the oral cavity. Further, in a toothbrush having a fiber group unit in which a plurality of extremely thin fibers are uniformly planted to form a group, there are platinum nanoparticles having a bactericidal action in the middle of the fibers, and it does not directly improve the aesthetics such as white teeth.

[0005] Therefore, in view of the above technical problems, the present invention aims to provide an ultra-fine filament dense type toothbrush of a thousand-bristle or ten-thousand-bristle unit having a structure for further improving the aesthetics of teeth.

Means for Solving the Problems

[0006] In view of the above technical problems, the ultra-fine filament dense type toothbrush of a thousand-bristle or ten-thousand-bristle unit of the present invention has a brush part in which ultra-fine filaments are bundled on one surface of the head, and a handle part connected to the head. The ultra-fine filaments of the brush part are densely bundled and arranged so that there is no gap between the ultra-fine filaments, and the diameter of each ultra-fine filament is 0.2 mm or less and 0.02 mm or more.

[0007] In the toothbrush of the present invention, since the ultra-fine filaments of the brush part are densely bundled and arranged without gaps, each ultra-fine filament can gently and continuously contact the teeth and gums to rub the tooth surface of the user, etc. Therefore, it is possible to remove the pigment and dental plaque deposited on the tooth surface. In order to obtain such characteristics, the diameter of each ultra-fine filament is preferably 0.2 mm or less and 0.02 mm or more, more preferably 0.15 mm or less and 0.04 mm or more, and even more preferably 0.11 mm or less and 0.07 mm or more. Such ultra-fine filaments can be configured to be bundled and arranged in the range of, for example, 1,000 filaments to 80,000 filaments, more preferably in the range of 2,000 filaments to 50,000 filaments, and even more preferably in the range of 3,000 filaments to 30,000 filaments. Since the ultra-fine filaments of the brush part are densely arranged without gaps between the ultra-fine filaments, when the brush part contacts the teeth and gums, an elastic deformation obtained by bending hundreds to thousands of very soft ultra-fine filaments at the same time occurs, so that the brush part can gently and continuously contact the teeth and gums to rub the tooth surface of the user, etc. In addition, in this specification, since the ultra-fine filaments can be grasped as bristles, the number is described in the unit of bristles.

[0008] In the toothbrush according to a preferred embodiment of the present invention, on the back side of the surface on which the ultra-fine filaments of the head are formed, a concavo-convex part composed of a plurality of minute concavo-convexities is formed. This concavo-convex part is made of a resin piece with a hardness that can be elastically deformed and functions as a tongue brush by rubbing the surface of the tongue. A toothbrush having a concavo-convex part on the back surface of the head, for example, the head has an insertion hole through which the bundled ultra-fine filaments of the brush part are inserted, and the densely held ultra-fine filaments are attached from the back surface side through the insertion hole, and the end of the ultra-fine filament in the insertion hole can be sealed by the concavo-convex part.

[0009] In the toothbrush according to another preferred embodiment of the present invention, each of the ultra-thin filaments can have a shape with a tapered tip, or the ultra-thin filaments bundled in the brush portion can be configured to adhere to or contain metal catalyst particles having an antibacterial function. In this specification, the ultra-thin fiber yarn and the ultra-thin filament are terms that can be used interchangeably with the same meaning.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0011] Hereinafter, with reference to the drawings, a toothbrush according to a preferred embodiment of the present invention will be described. FIGS. 1 to 3 show the toothbrush 10 of the present embodiment.

[0012] As shown in FIGS. 1 to 3, the toothbrush 10 includes a rod-shaped handle portion 12 that serves as a grip, a thin flat head portion 14 connected to the tip of the handle portion 12, and a brush portion 16 provided on the surface that is one surface of the head portion 14. The brush portion 16 is configured by bundling ultra-thin filaments 24 densely.

[0013] The handle portion 12 is made of a polyolefin resin such as relatively hard polypropylene, for example, and a through hole 18 used when hanging the toothbrush 10 is provided at the end on the side opposite to the head portion 14. When holding the toothbrush 10, the toothbrush 10 is operated with a thumb or the like, and a groove portion 20 for maintaining the contact of the thumb at that time is also formed. The portion of the handle portion 12 that communicates with the head portion 14 from the vicinity of the groove portion 20 is made thinner, and its end is connected to the head portion 14.

[0014] The head 14 is also a part formed integrally with the handle 12 by resin. Through the insertion hole 22 formed in the head 14, the ultra-fine filaments 24 that are densely held without gaps between each ultra-fine filament using a clamp member or the like are attached from the back side through the insertion hole 22 of the head 14, and a brush part 16 that bundles the ultra-fine filaments 24 so as to be dense is provided. As a method of providing the brush part 16, the ultra-fine filaments 24 can be inserted into the insertion hole 22 formed in the head 14 while maintaining the state of being densely bundled using a clamp member or the like, but the ultra-fine filaments 24 in a state of being densely bundled without interruption are formed on the support member, and the support member as a whole may be inserted into the insertion hole 22 formed in the head 14 and embedded.

[0015] The ultra-fine filaments 24 constituting the brush part 16 are fiber yarns made of a polyolefin resin such as polypropylene resin, for example. Each one is extremely thin compared to hair or the like, and it is desirable that the diameter is 0.2 mm or less and 0.02 mm or more, more preferably 0.15 mm or less and 0.04 mm or more, and even more preferably 0.11 mm or less and 0.07 mm or more. Such ultra-fine filaments are densely arranged so that there are no gaps between each ultra-fine filament, and can be configured to be bundled in the range of, for example, 1,000 filaments to 80,000 filaments and arranged on the head 14 of one toothbrush 10. More preferably, it is bundled and arranged in the range of 2,000 filaments to 50,000 filaments, and even more preferably in the range of 3,000 filaments to 30,000 filaments. The ultra-fine filaments 24 constituting the brush part 16 do not exhibit elasticity by themselves due to their thinness, but by bundling and adhering the ultra-fine filaments 24, the brush part 16 as a whole exhibits elasticity, and the cleaning in the oral cavity can be promoted while having an appropriate elasticity when pressed against teeth and gums.

[0016] The ultra-thin filaments 24 are each formed with a tapered tip at the tip side of the brush portion 16. Therefore, on the surface at the very tip side of the brush portion 16, it presents a softer touch and contacts the teeth and gums. Also, the ultra-thin filaments 24 bundled in the brush portion 16 can be made to adhere to or contain metal catalyst particles having antibacterial and anti-odor functions. For example, by mixing platinum nanoparticles or silver ion nanoparticles to produce a resin filament and using this as the ultra-thin filament 24 of the brush portion 16, it is also possible to reduce bacteria and the like sandwiched between the ultra-thin filaments 24.

[0017] The brush portion 16 is bundled in a form where the ultra-thin filaments 24 are densely packed without interruption, and its height is configured to be about 0.5 to 2.0 cm, preferably about 0.7 to 1.5 cm, from the upper surface of the head 14 in this embodiment. Also, the length of the brush portion 16 in the longitudinal direction is in the range of 0.5 cm to 3.0 cm, the length of the brush portion 16 in the width direction is in the range of 0.4 cm to 2.5 cm, and typically the shape projected onto the plane of the brush portion 16 is rectangular, but it may also be fan-shaped, circular, or the like. Also, the size of the brush portion 16 can be made even smaller for children's or pet toothbrushes, with dimensions in the range of 0.3 cm to 2.0 cm in the longitudinal direction and about 0.3 cm to 1.5 cm in the width direction.

[0018] On the back side of the brush part 16 formed by bundling the ultra-fine filaments 24 densely, as shown in FIGS. 2 and 4, concavo-convex parts 26 are formed. The concavo-convex parts 26 are formed of a polyolefin resin such as polypropylene that is slightly softer than the resin constituting the handle part 12 and the head part 14, and can be molded by filling the resin from the back side of the head part 14 into the insertion hole 22 in a molten state and performing die pressing. At this time, at the same time, the ultra-fine filaments 24 are also fixed by the resin forming the concavo-convex parts 26 in the insertion hole 22. The concavo-convex parts 26 are arranged in a matrix such that small protrusions 28 spread over, for example, the entire back surface of the head part 14. The interval between the protrusions 28 is about 0.7 mm to 1.5 mm, and one protrusion 28 is, for example, hemispherical with a diameter of about 0.3 mm to 0.8 mm. The concavo-convex parts 26 are configured to show slight elasticity, for example, by blending with an elastomer, and are particularly effective for tongue brushing due to their softness and elasticity. For example, a fluid such as the sticky surface of the tongue can also be entangled by rubbing against the concavo-convex parts 26 formed by arranging the protrusions 28, and bad breath can also be suppressed.

[0019] The toothbrush 10 of the present embodiment can brush teeth using toothpaste like a normal toothbrush, but it is also possible to brush teeth just by wetting the brush part 16 with water. By wetting the brush part 16 with water and brushing to massage the teeth and gums, a sufficient toothbrushing effect can be obtained just by rinsing with water after brushing, and the effect of scraping off dental plaque is also obtained.

[0020] The toothbrush 10 of the present embodiment having the above-described configuration has a brush part 16 in which ultra-fine filaments 24 are densely bundled. Therefore, soft brush tips can be brought into contact with each of the teeth, the back of the teeth, the gums, and the tongue, and each part in the oral cavity can be efficiently cleaned. Further, the toothbrush 10 of the present embodiment can also perform tongue brushing by rubbing the surface of the tongue with the concavo-convex parts 26, and bad breath can also be suppressed.

Explanation of Reference Numerals

[0021] 10 Toothbrush 12 Handle part 14 Head part 16 Brush part 18 Through-hole 20 Groove portion 22 Insertion hole 24 Ultra-fine filament 26 Concavo-convex portion 28 Protrusion

Claims

1. The brush has a brush portion having ultra-fine filaments bound to one surface of the head, and a handle portion connected to the head. The toothbrush is characterized in that the ultra-fine filaments of the brush part are densely bundled together so that there are no gaps between each ultra-fine filament, and the diameter of each ultra-fine filament is 0.2 mm or less and 0.02 mm or more.

2. 2. The toothbrush according to claim 1, wherein the ultra-fine filaments are arranged in a bundle in a range of 1,000 to 80,000 bristles.

3. 2. The toothbrush according to claim 1, wherein an uneven portion consisting of a plurality of minute projections and recesses is formed on the reverse side of the surface of the head on which the ultrafine filaments are formed.

4. 4. The toothbrush according to claim 3, wherein the head portion has an insertion hole through which the bundled ultra-fine filaments of the brush portion are inserted, the ultra-fine filaments held in a dense manner are attached from the back side through the insertion hole, and the ends of the ultra-fine filaments within the insertion hole are sealed by the uneven portion.

5. 2. The toothbrush of claim 1, wherein each of said ultra-fine filaments has a tapered shape.

6. 2. The toothbrush according to claim 1, wherein the ultra-fine filaments bound in the brush portion are attached with or contain metal catalyst particles having antibacterial properties.

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