Title:
ELECTRIC FIN AND WATERCRAFT
Document Type and Number:
WIPO Patent Application WO/2021/018091
Kind Code:
A1
Abstract:
The present invention relates to an electric fin and a watercraft. The electric fin comprises a shell extending in a first direction and provided with a water inlet cavity; and a driving member and a propeller arranged in sequence in the first direction, wherein at least part of the driving member is located in the water inlet cavity, the driving member is used for driving the propeller to rotate, and the propeller is located in the water inlet cavity; the propeller is provided with a propeller shaft and a plurality of blades, the propeller shaft extends in the first direction, and the plurality of blades are arranged on the propeller shaft in a circumferential direction; and in the first direction, the driving member is provided with a first end portion, the propeller shaft is provided with a second end portion, the second end portion of the propeller shaft and the first end portion of the driving member are in clearance fit in the first direction, the outer contour shape of the cross section of the second end portion is the same as the outer contour shape of the cross section of the first end portion, and projections of the second end portion and the first end portion in the first direction coincide. The electric fin of the present invention has sufficient power.
Inventors:
WANG ZHIYUE (CN)
Application Number:
PCT/CN2020/104880
Publication Date:
February 04, 2021
Filing Date:
July 27, 2020
Export Citation:
Assignee:
ORIENTAL RECREATIONAL PRODUCTS SHANGHAI CO LTD (CN)
International Classes:
B63B32/10; B63B34/10; B63H5/14
Foreign References:
| CN210912790U | 2020-07-03 | |||
| CN210681072U | 2020-06-05 | |||
| CN210653566U | 2020-06-02 | |||
| CN210653565U | 2020-06-02 | |||
| CN106143824A | 2016-11-23 | |||
| CN106143824A | 2016-11-23 | |||
| US3885516A | 1975-05-27 | |||
| DE3735409A1 | 1989-05-03 | |||
| SE342596B | 1972-02-14 | |||
| US9981728B2 | 2018-05-29 | |||
| US10266239B2 | 2019-04-23 | |||
| CN208069989U | 2018-11-09 | |||
| CN103786853A | 2014-05-14 | |||
| CN109421911A | 2019-03-05 |
Attorney, Agent or Firm:
WATSON & BAND INTELLECTUAL PROPERTY AGENT LTD. (CN)
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