JPH0591435U - Arc type toothbrush - Google Patents

Abstract

(57) [Summary] [Purpose] The curved part of the dentition (first half of the dentition) can be polished more efficiently, comfortably and safely. [Structure] A portion of the toothbrush in which the brush is in contact with the teeth is concave and convex. Also, for convenience of use, both concave and convex brushes are attached to one shaft. In addition, the concavo-convex brush is combined with a conventional linear brush and attached to a single shaft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improved product of a conventional toothbrush having an arc-shaped brush surface. More specifically, the present invention relates to a toothbrush which is manufactured by processing the brush surface into a concave shape and a convex shape, and these arc-shaped brushes are formed on one shaft stalk. Toothbrushes attached, or these arcuate brushes and conventional linear brushes-to toothbrushes attached to the stem of a book.

[0002]

[Prior Art]

 Conventionally sold toothbrushes have a straight brush surface and are therefore suitable for polishing the meshing parts of the upper and lower teeth and the back teeth, but the so-called rolling method is used to change the incisor teeth to the old and new teeth. When brushing the outside of the first half, the center part of the brush rubs the gums and teeth relatively strongly, while both ends have low friction, and when brushing the inside, both ends of the brush hit hard, resulting in tooth brushing. In addition to being inefficient, it has the drawback of sometimes injuring the gums and causing bleeding.

[0003]

[Problems to be solved by the device]

 The present invention was devised to improve the above-mentioned drawbacks, and its purpose is to make tooth brushing more efficient, comfortable and safe.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the toothbrush of the present invention has a concave and convex brush surface so that the toothbrush is processed and manufactured so as to be in intimate contact with the inside and outside of the dentition curve.

[0005]

[Action]

 The concave brush is gently curved as shown in Fig. 1 so that the brush surface is easily attached to the outside of the curved portion of the dentition.

Further, the convex brush is gently curved as shown in FIG. 2 so that the brush surface is easily attached to the inside of the curved portion of the dentition.

For the convenience of use, both concave and convex brushes can be attached to a single shaft as shown in FIG.

Furthermore, as shown in FIG. 4, it is also possible to attach either one of the concave and convex type brushes or both types of brushes together with a conventional type brush to one shaft.

[0009]

[Effect of the device]

 Since the present invention has been devised as described above, it has the effects described on the next page.

By using the concave toothbrush of claim 1, the outer side of the front half of the dentition can be more efficiently and refreshingly polished.

By using the convex toothbrush according to claim 2, the inside of the front half of the dentition can be polished more efficiently, refreshingly and safely.

By using the concave-convex toothbrush of the third aspect, it is possible to polish the inner and outer sides of the front half of the dentition more efficiently, refreshingly and safely with one toothbrush.

With the use of the toothbrush according to claim 4, it is possible to brush all the upper and lower teeth more efficiently, refreshingly and safely with one toothbrush.

[Brief description of drawings]

FIG. 1 is a view of a relevant portion of a toothbrush in which a concave brush is attached to a shaft.

FIG. 2 is a view of a corresponding portion of a toothbrush in which a convex brush is attached to a shaft.

FIG. 3 is an example view of a corresponding portion in which both concave and convex brushes are attached to one shaft.

FIG. 4 is an example view in which a concavo-convex type brush and a conventional type brush are attached to one shaft handle.

Claims (4)

[Scope of utility model registration request] 1. A toothbrush in which the surface of the brush that contacts the teeth is concave. 2. A toothbrush having a convex surface on a surface in contact with teeth of the brush. 3. A toothbrush in which both concave and convex brushes are attached to one handle shaft. 4. A toothbrush in which a concavo-convex type and a conventional type brush are attached to one shaft.