Title:
POWER ASSEMBLY, ARM ASSEMBLY, ARM CONNECTOR, AND UNMANNED AERIAL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/139650
Kind Code:
A1
Abstract:
A power assembly (10), comprising: a propeller (13) comprising a propeller hub (131) and a propeller blade (136), the propeller blade (136) and the propeller hub (131) being rotatably connected; a propeller driving device (11) fixedly connected to the propeller hub (131) and used to drive the propeller hub (131) to rotate, the direction of rotation of the propeller hub (131) being perpendicular to the direction of rotation of the propeller blade (136) relative to the propeller hub (131); an elastic member (16, 16a) connected between the propeller hub (131) and the propeller blade (136), and comprising a first connection end (161) and a second connection end (163) opposite to each other, the first connection end (161) being connected to the propeller blade (136), the second connection end (163) being connected to the propeller hub (131), and the elastic member (16, 16a) being capable of keeping the propeller blade (136) in an unfolded state; and a propeller blade tray (15) disposed at a connection location between the propeller driving device (11) and the propeller (13), the propeller blade tray (15) being capable of moving back and forth in the axial direction thereof, so as to restrain an elastic force of the elastic member (16, 16a) to fold the propeller blade (136), and/or to release an elastic force of the elastic member (16, 16a) to unfold the propeller blade (136). In the present disclosure, the back-and-forth movement of the propeller blade tray (15) in the axial direction thereof enables the propeller to be unfolded when in use and folded when not in use, thereby facilitating storage and placement of the power assembly, and accordingly facilitating storage and placement of an unmanned aerial vehicle having the power assembly. The present disclosure further relates to an arm assembly, an arm connector, and an unmanned aerial vehicle.
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Inventors:
DONG GUOSHUAI (CN)
ZHU LULU (CN)
ZHENG WEIFENG (CN)
LU ZHIHONG (CN)
ZHU LULU (CN)
ZHENG WEIFENG (CN)
LU ZHIHONG (CN)
Application Number:
PCT/CN2021/070322
Publication Date:
July 15, 2021
Filing Date:
January 05, 2021
Export Citation:
Assignee:
POWERVISION TECH SUZHOU LTD (CN)
International Classes:
B64C11/28
Foreign References:
| CN207536120U | 2018-06-26 | |||
| CN207773467U | 2018-08-28 | |||
| CN208498787U | 2019-02-15 | |||
| US20190359317A1 | 2019-11-28 | |||
| US20180155056A1 | 2018-06-07 | |||
| US10392104B1 | 2019-08-27 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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