| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toothbrush capable of giving gentle contact feeling to gums while ensuring strength of a head part. <P>SOLUTION: In the toothbrush 1 in which a plurality of bristle bundles 30 to 40 formed by bundling a plurality of brushes are implanted on a brush-implantation surface 20 of the head part 2; a bristle group 10 in which tip ends of the plurality of bristle bundles 30 to 40 are mutually gathered is formed; and a part or the whole of bristle bundles 30 to 40 forming the bristle group 10 are implanted while being inclined toward the brush-implantation surface 20, the outline of the tip ends of the bristle group 10 has a not less than 5 mm maximum length in a width direction of the head part 2, and a not less than 5 mm maximum length in a length direction of the head part 2; and the bristle bundle diameter of the bristle bundles 30 to 40 forming the bristle group 10 is not less than 2 mm. <P>COPYRIGHT: (C)2013,JPO&INPIT |
