Title:
THREE-BRUSH LINKAGE TYPE TOOTHBRUSH HEAD
Document Type and Number:
WIPO Patent Application WO/2022/105487
Kind Code:
A1
Abstract:
A three-brush linkage type toothbrush head, comprising brush heads, a protective cover (4), and a transmission apparatus. The brush heads are cylindrical, bristles are provided on the cylindrical surfaces of the brush heads, and rotating shafts are provided at the two ends of the brush heads; the three brush heads are respectively a top brush (1), a left brush (2), and a right brush (3), the axes of the brush heads are parallel to one another, and the three brush heads are arranged in the shape of a Chinese character "品"; the protective cover (4) is a U-shaped curved surface, and the two ends of the protective cover (4) are provided with three pairs of shaft sleeves which respectively correspond to the rotating shafts of the three brush heads; the left brush (2) and the right brush (3) are arranged at an opening of the protective cover (4), and the top brush (1) is arranged at the bottom of the protective cover (4); a connector (5) is provided at the end portion of the rotating shaft at the bottom of the top brush (1), and the transmission apparatus is arranged among the three brush heads. The arrangement mode of the bristles meets the ergonomic requirements of tooth parts, and does not damage gums; the junctions of the gums and teeth are uniformly stressed, without forming a brushing injury groove; the three surfaces of the teeth are cleaned simultaneously, and the force of each bristle contacting the teeth is stable, so that the contact is comfortable, and the cleaning efficiency is high.
Inventors:
ZHANG LIN (CN)
Application Number:
PCT/CN2021/123755
Publication Date:
May 27, 2022
Filing Date:
October 14, 2021
Export Citation:
Assignee:
ZHANG LIN (CN)
International Classes:
A61C17/34; A46B5/00
Domestic Patent References:
| WO2012086955A1 | 2012-06-28 |
Foreign References:
| US20180021118A1 | 2018-01-25 | |||
| CN112425888A | 2021-03-02 | |||
| CN1443517A | 2003-09-24 | |||
| CN2458997Y | 2001-11-14 |
Attorney, Agent or Firm:
NANJING SHEN YUN INTELLECTUAL PROPERTY AGENCY OFFICE (GENERAL PARTNERSHIP) (CN)
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