JP3234342U - toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothbrush which is excellent in usability because it is not necessary to bother to change the handle portion when polishing the entire upper surface, lower surface and side surface of a tooth, and also saves a brush and reduces a manufacturing cost. A toothbrush has a head 2 provided with a brush 5 and a handle portion 4 that can be gripped, and the length of the brush 5 in the central portion 7 of the row direction K provided on the head 2 is on the left side. It is shorter than the length of the brush 5 of the portion 8 and the right portion 9, and the recess 6 is formed in the central portion 7 of the row direction K of the brush 5, and the brush 5 of the short central portion 7 forming the recess 6 is the tooth. The brush 5 on the left side portion 8 and the right side portion 9 is in contact with the side surface of the tooth while being in contact with the upper surface or the lower surface, and the tooth can be freely brushed so as to sandwich the tooth from the upper surface or the lower surface. [Selection diagram] Fig. 1

Description

The present invention relates to a technical field of a toothbrush that can be used smoothly without having to change hands each time when polishing the entire upper and lower surfaces and side surfaces of a tooth, and also reduces the manufacturing cost.

Conventionally, as a toothbrush, for example, in Patent Document 1 below, in a hand toothbrush in which a plurality of brush bundles are arranged in the longitudinal direction of the flocked portion, the brush tip line in the longitudinal direction connecting the tip center and the rear end center of the flocked portion is the highest. The point is set to a position 0.6 to 0.75 times the length of the flocked part in the longitudinal direction from the tip, the tip is 0.4 to 0.6 times the brush length at the highest point, and the rear end is the tip brush length higher than the tip. A toothbrush formed so as to have an asymmetric arc shape of 1.4 to 1.6 times is described (see the amended claim 1 of the same document 1).

Utility Model Registration No. 3217413

It is described in the same document that the toothbrush described in Patent Document 1 can be applied to various shapes of teeth including dents and spaces between teeth and has a high plaque removing effect (see paragraphs [0004] and [0010]). ). The central portion of the brush in the row direction, particularly the rear portion, is formed in a curved shape higher than the side surface portion, and when brushing the upper surface or the lower surface of the tooth, the curved shape of the brush of the toothbrush is customary. The tip surface of the above is brought into contact with each other.
However, when brushing the side of the tooth, it is naturally necessary to change the toothbrush at an angle of about 90 degrees, and it is necessary to change the angle of the toothbrush and brush it, which is a troublesome toothbrushing work. It is said that how to overcome the problem should be solved.

Therefore, the problem to be solved by the present invention is that when polishing the entire upper surface, lower surface and side surface of the tooth, it is not necessary to change the handle portion, and the tooth can be used smoothly, and the brush is saved to reduce the manufacturing cost. The purpose is to provide a toothbrush that has also been designed.

As a means for solving the above problems, the toothbrush devised according to claim 1 is a toothbrush having a head 2 provided with a brush 1 and a handle portion 4 that can be grasped.
The length H1 of the brush 5 in the central portion 7 of the row direction K provided on the head portion 2 is shorter than the length H2 of the brush 5 in the left side portion 8 and the right side portion 9, and the central portion of the brush 5 in the row direction K. A recess 6 is formed in the recess 6, and the brush 5 of the short central portion 7 forming the recess 6 is brought into contact with the upper surface 12 or the lower surface of the tooth 1, and the brush 5 of the left side portion 8 and the right side portion 9 is a tooth. It is characterized in that the tooth 1 is abutted against the side surface 13 of the 1 and is freely brushed so as to sandwich the tooth 1 from the upper surface 12 or the lower surface.

In the invention according to claim 2, the length H1 of the brush 5 in the central portion 7 of the row direction K provided on the head portion 2 is approximately 1 / of the length H2 of the brush 5 in the left side portion 8 and the right side portion 9. The toothbrush according to claim 1, wherein the toothbrush is formed in about two pieces.

According to the third aspect of the present invention, the brush 5 in the central portion 7 of the row direction K provided on the head 2 is partially formed shorter than the brush 5 on the left side portion 8 and the right side portion 9. The toothbrush according to claim 1, which is a feature.

The invention according to claim 4 is characterized in that the recess 6 is formed without forming all the brushes 5 in the central portion 7 of the row direction K provided on the head 2. The toothbrush described.

The invention according to claim 5 is characterized in that the handle portion 4 that can be grasped has an electric structure, and the brush 5 of the head portion 2 is configured to be finely movable. The toothbrush according to any one of the items to 4.

In the toothbrush according to claim 1 of the present invention, the length of the brush in the central portion in the row direction provided on the head is shorter than the length of the brushes in the left and right portions, and the toothbrush is located in the central portion in the row direction of the brushes. Since the recesses are formed, when brushing the entire upper surface, lower surface and side surface of the tooth, the short central brush forming the recess is brought into contact with the upper surface and lower surface of the tooth, and the brushes on both the left and right sides are formed. The entire tooth can be brushed evenly so that it is in contact with the side surface of the tooth and the tooth is sandwiched from the upper or lower surface. It contributes to the reduction of manufacturing cost by saving the brush.

In the toothbrush according to claim 2, the length of the brush in the central portion in the row direction provided on the head is formed to be about ½ of the length of the brush on the left side and the right side, so that the tooth is placed on the upper surface. And the recesses that are sandwiched from the lower surface are easily formed, which simplifies the manufacture of toothbrushes and reduces costs.

The toothbrush according to claim 3 has a brush in the center of the row direction provided on the head, which is partially shorter than the brushes on both the left and right sides. It is also convenient for responding to design changes.

The toothbrush according to claim 4 has a recess formed in the central portion of the head in the row direction without forming all the brushes, which contributes to further facilitation of manufacturing and cost reduction of the toothbrush. ..

The toothbrush according to claim 5 has an electric structure for a handle that can be gripped and a brush on the head that can be finely moved. Therefore, the toothbrush has excellent flexibility in brushing teeth efficiently. ing.

It is a perspective view which showed the essential brush of the toothbrush of this invention.

It is a front view which showed the toothbrush from the tip direction.

It is explanatory drawing which showed the use state of the toothbrush from the side view.

It is explanatory drawing which showed the use state of the toothbrush from above.

It is a perspective view which showed the brush of a different toothbrush.

A preferred embodiment of the toothbrush of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 4, the toothbrush has a head 2 provided with a brush 1, a neck 3 following the head 2, and a handle portion 4 that can be grasped following the neck 3. Consists of.
As shown in FIG. 2, the length H1 in the height direction of the brush 5 in the central portion 7 of the central portion 7 in the row direction K (longitudinal direction, see FIG. 1) provided in the head portion 2 is that of the left side portion 8 and the right side portion 9. The length H2 in the height direction of the brush 5 is shorter than the length H2 in the height direction, and a recess 6 is formed in the central portion 7 of the brush 5 in the row direction K.
As shown in FIGS. 1 and 2, the length H1 (height) of the brush 5 in the central portion 7 is approximately 1 / of the length H2 (height) of the brush 5 in the left side portion 8 and the right portion 9. The embodiment formed in about 2 is preferable. That is, when H2 is about 10 mm, H1 is preferably about 5 mm. However, as a desired length (not shown), for example, an embodiment in which the lengths of the brushes 5 on the left and right side portions 8 and 9 are formed to be approximately 1/3 or 1/4 can be adopted.

In a more extreme case, as shown in FIG. 5, it is also possible to form the recess 6 without forming all the brushes 5 in the K direction of the central portion 7.
Further, as shown in FIG. 5, the brush 5 in the central portion 7 is composed of two rows, and the brush 5 in one row thereof is completely eliminated, or the left and right side portions as shown in FIGS. 1 and 2. Various variations of the embodiments can be adopted, such as forming the lengths of the brushes 5 of 8 and 9 shorter than the length H2.
Alternatively, although not shown, the brush 5 at the central portion 7 can be partially formed shorter than the brush 5 at the left side portion 8 and the right side portion 9. For example, when viewed from the side surface as shown in FIG. 3, the brush 5 in the central portion 7 is curved to form the recess 6.

Therefore, as shown in FIGS. 3 and 4, the brush 5 of the short central portion 7 forming the recess 6 is brought into contact with the upper surface 12 of the teeth 1 of the lower jaw, and the left side portion 8 and the right side portion 9 are contacted. The brush 5 is brought into contact with the side surface 13 of the tooth 1 so that the tooth 1 is sandwiched from the upper surface 12 to smoothly and cleanly remove plaque and brush the tooth.

Specifically, when brushing the upper surface 12 of the lower jaw tooth 1, the handle portion 4 is grasped so that the brush 5 of the toothbrush faces downward, and the concave portion 6 of the brush 5 in the central portion 7 is cut into the front teeth 10 (central incisors). Start brushing from the teeth (consisting of the teeth, lateral incisors and canines) (see Fig. 3), and then continue to the back teeth 11 (first and second central incisors, first and second central incisors, second and third). The toothbrush can be moved toward (consisting of the canines) to smoothly brush the upper surface 12, the lower surface and the side surface 13 of all the teeth 1 (see FIG. 4). In FIG. 4, the brushes 5 on the left and right side portions 8 and 9 are shown by virtual lines, and the brush 5 on the central portion 7 is omitted from the illustration for convenience.
This is carried out in the case of brushing the lower surface of the upper jaw tooth 1 (not shown) in the same manner as in the case of brushing the upper surface 12 of the lower jaw tooth 1.

Although the embodiment has been described with reference to the drawings, the present invention is not limited to the illustrated example. It is mentioned just in case that the range of design changes and application variations normally performed by those skilled in the art is included within the range that does not deviate from the technical idea such as freely configuring.

H1 Central brush length H2 Left and right brush length K Row direction 1 Tooth 10 Front tooth 11 Molar 12 Top 13 Side 2 Head 3 Neck 4 Handle 5 Brush 6 Recess 7 Central 8 Left 9 Right side

Claims (5)

In a toothbrush with a head with a brush and a handle that can be gripped
The length of the brush at the center in the row direction provided on the head is shorter than the length of the brushes on the left and right sides, and a recess is formed in the center of the brush in the row direction. The short central brush is in contact with the upper or lower surface of the tooth, and the left and right brushes are in contact with the side surface of the tooth, allowing the tooth to be brushed freely so as to sandwich the tooth from the upper surface or lower surface. A toothbrush characterized by being constructed. The first aspect of the present invention, wherein the length of the brush at the center in the row direction provided on the head is formed to be about ½ of the length of the brushes on the left side and the right side. Toothbrush. The toothbrush according to claim 1, wherein the brush at the center in the row direction provided on the head is partially formed shorter than the brushes on the left side and the right side. The toothbrush according to claim 1, wherein the brush in the central portion in the row direction provided on the head is not completely formed but the recess is formed. The toothbrush according to any one of claims 1 to 4, wherein the handle portion that can be gripped has an electric structure, and the brush on the head portion is configured to be finely movable.

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