Title:
TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2020/095867
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a toothbrush with which flexing of a neck portion can be suppressed by the overall brush main body, even if a head portion is made thinner and the neck portion is made narrower, and with which excellent gripping properties of a handle portion and good operability in the oral cavity can be achieved simultaneously. A toothbrush (1) is provided with a brush main body (2) including a handle portion (3), a neck portion (4) which extends from a distal end of the handle portion (3), and a head portion (5) provided at the distal end of the neck portion (4), wherein a plurality of bristle bundles are implanted into a bristle implanting surface (5a) of the head portion (5), and wherein: the brush main body (2) has a shape in which the thickness of the neck portion (4) increases continuously from the head portion (5) toward the handle portion (3); a thickness D1 of the head portion (5) is 2 to 4 mm; a minimum thickness D2 of the neck portion (4) is 3 to 4.5 mm; and a maximum thickness D3 of the handle portion (3) is 13 to 16 mm.
Inventors:
NISHINO MASATSUGU (JP)
Application Number:
PCT/JP2019/043181
Publication Date:
May 14, 2020
Filing Date:
November 05, 2019
Export Citation:
Assignee:
LION CORP (JP)
International Classes:
A46B5/00; A61C17/22; A46B5/02
Foreign References:
| JP2005199035A | 2005-07-28 | |||
| JP2018114362A | 2018-07-26 |
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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