Title:
歯ブラシ
Document Type and Number:
Japanese Patent JP6983568
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a toothbrush that has high graspability of the handle part without increasing cost. A handle part (30) has: a first expanded part (41), the length of which in the width direction is at a maximum at a first position (P1) in the length-axis direction; a first constricted part (43), the length of which is at a minimum at a second position (P2) closer to the rear-end side than the first expanded part; a second expanded part (42), the length of which is at a maximum at a third position (P3) closer to the rear-end side than the first constricted part; and a second constricted part (44), the length of which is at a minimum at a fourth position (P4) closer to the rear-end side than the second expanded part. When the minimum length of the first constricted part is defined as PW2 and the maximum length of the second expanded part is defined as PW3, PW3 is 15-20 mm and PW3/PW2 is 1.3-1.5. When the thickness at the first position is defined as PT1 and the thickness at the third position is defined as PT 3, PT 3 is 15-20 mm, and PT3/PT1 is 1.7-2.5.
Inventors:
Saya Nozawa
Umiyuki Kobayashi
Kitahara Shoji
Umiyuki Kobayashi
Kitahara Shoji
Application Number:
JP2017147972A
Publication Date:
December 17, 2021
Filing Date:
July 31, 2017
Export Citation:
Assignee:
LION Corporation
International Classes:
A46B5/02
Domestic Patent References:
| JP6170802B2 | ||||
| JP2000189250A | ||||
| JP5468832B2 | ||||
| JP201554209A |
Attorney, Agent or Firm:
Field Saki Satoshi
Yuichiro Kawagoe
Hiroyuki Kato
Yuichiro Kawagoe
Hiroyuki Kato
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