JPH0344003Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a toothbrush, and more particularly, to a toothbrush whose bristle bed can be easily replaced.

[Conventional technology and problems]

It is said that after using a toothbrush for about two weeks, the brittle begins to deform, and if it is used for a month, its ability to remove plaque deteriorates significantly. Therefore, it is recommended that you replace your toothbrush with a new one every month.

However, even with toothbrushes that have been used for a long period of time, although the brittle may be deformed, there are often no problems with the grip (handle). Therefore, it is sufficient to replace only the part of the bristle bed in which the brittle is implanted, and from this point of view, various toothbrushes have been proposed that allow the part of the bristle bed to be replaced. In such toothbrushes, it is considered most important to increase the strength of the joint between the bristle bed and the gripping part, and from this point of view, toothbrushes using metal for the joint have been proposed.
More specifically, as disclosed in Japanese Utility Model Application Publication No. 54-98367, a groove is provided around the tufting table, a piano wire is applied to this groove to hold the tufting table, and the ends of the piano wire are There is a toothbrush that is designed to be inserted into the grip. It is possible to replace the bristle bed with this toothbrush, but when replacing it, you must pull out one end of the piano wire from the grip and push the piano wire holding the bristle bed out to the left and right. However, there is a drawback that the replacement work is extremely complicated.

[Means for solving problems]

As a result of intensive research to solve the above-mentioned drawbacks of conventional toothbrushes, the inventors of the present invention discovered a toothbrush whose bristle bed can be replaced extremely easily and completed the present invention.

That is, the present invention provides a toothbrush with a replaceable bristle bed part, in which a curved notch is provided around the bristle bed, and the protrusion height of the curved notch on the bristle surface side is opposite to the bristle surface. To provide a toothbrush characterized in that a small protrusion is provided near the surface of the curved cut which is higher than the height of the side protrusion and opposite to the flocked surface of the curved cut.

〔Example〕

As mentioned above, in the toothbrush of the present invention, it is extremely easy to replace the bristle bed. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1a is a perspective view of only the bristle bed portion showing an embodiment of the toothbrush of the present invention, and FIG. 1b is a sectional view taken along line A-A' of a. Note that b is drawn with the addition of a case in which an elastic rod 6 is applied around the tufting table 1.

In the toothbrush of this embodiment, a curved notch 2 is provided around the tufting base 1, and the height of the protrusion 8 of the curved notch 2 on the side of the tufted surface 3 is higher than that of the protrusion on the side opposite to the tufted surface. A small protrusion 5 is provided near the surface 4 which is higher than the height of the tension 9 and which is opposite to the flocked surface 3.

A rod 6 made of elastic metal or elastic plastic is applied to the curved cut 2.

When actually using the toothbrush, refer to B in Figure 1b.
Although force is applied from this direction, the small protrusions 5 can prevent the rod 6 from coming off the tufting table. This small protrusion is provided on the entire curved portion or a portion thereof.

On the other hand, when replacing the bristle transplanting table 1, the work is easier if the rod is not fitted into the sharp concave groove. Since the toothbrush of the present invention has a curved portion formed around the bristle bed, the curved portion and the rod can slide without applying strong force to the rod, making it easy to replace the toothbrush. In addition, during actual replacement work, it is possible to replace the rod more easily by applying force to push the rod outward a little.

Incidentally, FIG. 2 shows a plan view of the toothbrush of the present invention including the grip portion (handle) 7.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the toothbrush of the present invention, in which a is a perspective view of only the bristle bed portion, and b is a sectional view taken along line A-A' of a. FIG. 2 is a plan view of the toothbrush of the present invention, including the gripping portion (handle). 1: flocking table, 2: curved notch, 3: flocking surface, 4: surface opposite to flocking surface, 5: small protrusion, 6: elastic rod, 7: gripping part, 8: protrusion on the flocking surface side ,
9: Protrusion on the opposite side from the flocked surface.

Claims (1)

[Scope of utility model registration request] In a toothbrush with a replaceable bristle bed part, a curved notch is provided around the bristle bed, and the height of the protrusion of this curved notch on the side of the bristle grafting side is equal to the height of the bulge on the opposite side from the bristle grafting side. A toothbrush characterized in that a small protrusion is provided near the surface of the curved cut that is higher than the height and is opposite to the flocked surface.