Title:
歯ブラシ
Document Type and Number:
Japanese Patent JP6906313
Kind Code:
B2
Abstract:
The present invention provides a toothbrush that has a flat-plate implanted head section in which warpage, resin whitening and cracks are prevented, ensures sufficient implanted bristle strength, and is easy to handle in the mouth. This toothbrush is provided with a head section (10) having a plurality of bristle implanting holes (13) on the bristle implanted surface (12), and bundles of a plurality of bristles are folded into two parts and implanted in the bristle implanting holes (13) using flat plates (15). The thickness of the head section (10) is 2.0-4.0 mm, the bristle implanting hole density of the bristle implanting holes (13) is 25 holes/cm2 or more, and the toothbrush satisfies the relationship: 0.37 mm ≤ (X - d)/2 ≤ 0.55 mm, wherein X is the inner diameter of the bristle implanting holes, d is the thickness of the flat plates, and X is 0.9-1.3 mm.
Inventors:
Saya Nozawa
Naofumi Kanamaru
Naofumi Kanamaru
Application Number:
JP2017005804A
Publication Date:
July 21, 2021
Filing Date:
January 17, 2017
Export Citation:
Assignee:
LION Corporation
International Classes:
A46B5/00; A46B3/16; A46B9/04
Domestic Patent References:
| JP4796847B2 | ||||
| JP2001309818A | ||||
| JP2011024839A | ||||
| JP2016193073A |
Attorney, Agent or Firm:
Field Saki Satoshi
Yuichiro Kawagoe
Hiroyuki Kato
Masatake Shiga
Tadashi Takahashi
Suzuki Mitsuyoshi
Yuichiro Kawagoe
Hiroyuki Kato
Masatake Shiga
Tadashi Takahashi
Suzuki Mitsuyoshi