Title:
SURFACE PROCESSING DEVICE, AND DRIVING APPARATUS AND GEAR SPEED-CHANGE TRANSMISSION APPARATUS THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/151562
Kind Code:
A1
Abstract:
A surface processing device, comprising: a gearbox housing cover (200); a gearbox housing (210) having a driving input port (211); a gear set (220) provided in the gearbox housing (210); and an output shaft (230) connected to the gear set (220) and configured to drive a cleaning rotating disc of the surface processing device to rotate, wherein the output shaft (230) comprises a first suction channel (231) which is formed by a first opening (232) located at a lower end of the output shaft (230), a second opening (233) located at an upper end of the output shaft (230), and an inner wall of the output shaft (230); a third opening (212) is provided on a position where the gearbox housing (210) corresponds to the second opening (233), so as to introduce a suction force from the third opening (212) to the first suction channel (231) outside the gearbox housing (210). The device avoids the technical problems of poor suction effect caused by the rotation of the cleaning rotating disc with respect to a lower housing of the surface processing device and the poor rotation of the cleaning rotating disc caused by dust. Further disclosed are a driving apparatus and a gear speed-change transmission apparatus.
Inventors:
SONG HONGCHAO (CN)
ZHAO SHAN (CN)
ZHAO SHAN (CN)
Application Number:
PCT/CN2020/072435
Publication Date:
July 30, 2020
Filing Date:
January 16, 2020
Export Citation:
Assignee:
BEIJING HUTT INTELLIGENT TECH CO LTD (CN)
International Classes:
A47L1/02
Foreign References:
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| CN209638370U | 2019-11-15 | |||
| CN209678401U | 2019-11-26 | |||
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| CN209808242U | 2019-12-20 | |||
| CN102920393A | 2013-02-13 | |||
| CN107224242A | 2017-10-03 | |||
| CN108185896A | 2018-06-22 | |||
| CN103505143A | 2014-01-15 | |||
| US20170215682A1 | 2017-08-03 | |||
| EP2789281A1 | 2014-10-15 | |||
| KR101314626B1 | 2013-10-07 |
Attorney, Agent or Firm:
BEIJING HUIZE INTELLECTUAL PROPERTY LAW LLC (CN)
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