Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DRIVING DEVICE FOR HIGH-SPEED RECIPROCATING ROTATION OF ELECTRIC TOOTH CLEANING INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2017/185331
Kind Code:
A1
Abstract:
A driving device for high-speed reciprocating rotation of an electric tooth cleaning instrument, comprising a driving coil (A2), a rotation shaft assembly, driving permanent magnets (A4, A5), an energy storage means, a front end cover (A6), and a rear end cover (A10). The rotation shaft assembly comprises a rotation shaft (A7) and a magnetic conductor (A3) fixedly connected to the rotation shaft (A7). The magnetic conductor (A3) surrounds the rotation shaft (A7); a portion, on one side of the rotation shaft (A7), of the magnetic conductor (A3) is provided with a single-side rotation shaft magnetic conductor protrusion (A31); the rotation shaft magnetic conductor protrusion (A31) penetrates into or penetrates through a hollow part of the driving coil (A2) and is provided with an electrode yoke end distant from the rotation shaft (A7) direction; the driving permanent magnets (A4, A5) are respectively distributed at positions close to two sides of the electrode yoke end of the rotation shaft magnetic conductor protrusion (A31); magnetic gaps (D1) are formed between the driving permanent magnets (A4, A5) and the electrode yoke end of the rotation shaft magnetic conductor protrusion (A31); in the moving process of the rotation shaft magnetic conductor protrusion (A31), the sizes of the magnetic gaps (D1) are kept to range from 0.1 mm to 2 mm. By means of the driving device the electric tooth cleaning instrument is miniaturized. The driving device can be applied in children's tooth cleaning instruments.

Inventors:
YIN, Xianchun (Rm 602C, No.2 Bldg. Qingningge Tianxinqingyun Garden, Baogang Road, Luohu Distric, Shenzhen Guangdong 0, 518000, CN)
DAI, Xiaoguo (No. 489 Jinbai Road, Jinshan Industrial Zone, Shanghai 6, 201506, CN)
XU, Zhenwu (No. 489 Jinbai Road, Jinshan Industrial Zone, Shanghai 6, 201506, CN)
Application Number:
CN2016/080681
Publication Date:
November 02, 2017
Filing Date:
April 29, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHANGHAI SHIFT ELECTRICS CO., LTD. (No. 489 Jinbai Road, Jinshan Industrial Zone, Shanghai 6, 201506, CN)
YIN, Xianchun (Rm 602C, No.2 Bldg. Qingningge Tianxinqingyun Garden, Baogang Road, Luohu Distric, Shenzhen Guangdong 0, 518000, CN)
International Classes:
A61C17/34; A61C17/26; H02K33/16
Foreign References:
CN105997288A2016-10-12
CN205729551U2016-11-30
CN1875537A2006-12-06
CN1830403A2006-09-13
CN1886885A2006-12-27
US3538359A1970-11-03
US1866565A1932-07-12
CN104600948A2015-05-06
Attorney, Agent or Firm:
P. C. & ASSOCIATES (Room 902, Scitech TowerNo.22 Jian Guo Men Wai Avenue, Chao Yang District, Beijing 4, 100004, CN)
Download PDF: