Title:
ELECTRIC TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2023/272767
Kind Code:
A1
Abstract:
An electric toothbrush, comprising a housing (1), a brush head (2), a first spiral bevel gear (3), a second spiral bevel gear (4), and a drive motor (5). The brush head (2) is connected to the second spiral bevel gear (4); the first spiral bevel gear (3) is transmittingly connected to the second spiral bevel gear (4); the first spiral bevel gear (3) is disposed above the drive motor (5) and the first spiral bevel gear (3) is transmittingly connected to the drive motor (5); the central axis of the first spiral bevel gear (3) is perpendicular to the central axis of the second spiral bevel gear (4); the drive motor (5) has a stepped shaft (6) connected to the first spiral bevel gear (3). The first spiral bevel gear (3) and the second spiral bevel gear (4) are used to drive the brush head (2) to rotate, so that the drive is stable, and transmission efficiency is high. The stepped shaft (6) is used as the spindle of the drive motor (5), so that the transmission efficiency can be improved, and the transmission is more stable. Since the coupling in the prior art is removed, the noise generated during transmission can be reduced and the disorderly shaking of the brush head (2) during rotation can be reduced, thereby improving user experience and prolonging the service life.
Inventors:
CAI LIWEI (CN)
CHEN QILIN (CN)
CHEN QILIN (CN)
Application Number:
PCT/CN2021/104978
Publication Date:
January 05, 2023
Filing Date:
July 07, 2021
Export Citation:
Assignee:
CHAOZHOU LEJIU PLASTIC LTD COMPANY (CN)
International Classes:
A61C17/26
Foreign References:
| CN101564326A | 2009-10-28 | |||
| CN106685135A | 2017-05-17 | |||
| CN105877861A | 2016-08-24 | |||
| CN108915919A | 2018-11-30 | |||
| CN110138136A | 2019-08-16 | |||
| US20180021118A1 | 2018-01-25 |
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