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Title:
UNDERWATER PROPULSION DEVICE FOR WATERBORNE VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/147386
Kind Code:
A1
Abstract:
Provided is an underwater propulsion device for a waterborne vehicle with which a load on a motor is reduced. An underwater propulsion device 20 of a waterborne vehicle 1 having a waterborne floating portion 2 on which a user rides is provided with: a hollow main body portion 21 which is coupled to the waterborne floating portion 2 by means of a support strut 3, extends in a propulsion direction, and the inside of which is partitioned into a bow-side first chamber 27 and a stern-side second chamber 28; a motor 22 accommodated in the first chamber 27; a propeller 23 accommodated in the second chamber 28; and a motive power transmission shaft 24 which extends in the propulsion direction and connects the motor 22 to the propeller 23. The first chamber 27 has a waterproof construction, and the second chamber 28 includes a water inlet port 29 formed in the circumferential direction of the motive power transmission shaft 24 on the bow side of the propeller 23, and a jet flow port 30 formed at the stern side end. The propeller 23 is formed such that the outer diameter thereof is smaller than the diameter of the first chamber 27.

Inventors:
AOKI Hideaki (1-32, Chayamachi, Kita-ku, Osaka-sh, Osaka 11, 〒5808311, JP)
OUCHIDA Takeshi (1-32, Chayamachi, Kita-ku, Osaka-sh, Osaka 11, 〒5808311, JP)
Application Number:
JP2018/004461
Publication Date:
August 16, 2018
Filing Date:
February 08, 2018
Export Citation:
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Assignee:
YANMAR CO., LTD. (1-32, ChayamachiKita-ku,Osaka-sh, Osaka 11, 〒5308311, JP)
International Classes:
B63H11/08; B63B35/73
Foreign References:
US9359044B22016-06-07
JPH08239090A1996-09-17
JP2007276609A2007-10-25
JP2016523769A2016-08-12
JPH06159055A1994-06-07
US9359044B22016-06-07
US20160185430A12016-06-30
Attorney, Agent or Firm:
WATANABE Satoshi (2F Parkside-yotsuya, 18-20 San-eicho, Shinjuku-k, Tokyo 08, 〒1600008, JP)
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