Title:
UNDERWATER PROPULSION DEVICE
Document Type and Number:
Japanese Patent JP2020111332
Kind Code:
A
Abstract:
To provide an underwater propulsion device capable of improving cooling efficiency in a motor and a motor driving circuit with a simple configuration.SOLUTION: An underwater propulsion device 20 of waterborne vehicles 1 with an on-water floating part 2 that a user boards is connected to the on-water floating part 2 via a prop 3 and extends in a propulsion direction, and comprises a hollow main body part 21 the inside of which is partitioned into a first chamber 27 of a bow side and a second chamber 28 of a stern side, a motor 22 housed in the first chamber 27, a propeller 23 housed in the second chamber 28, and a power transmission shaft 24 extending in the propulsion direction and connecting the propeller 23 with the motor 22. The underwater propulsion device further comprises a cooling channel for cooling the first chamber 27.SELECTED DRAWING: Figure 7
Inventors:
AOKI HIDEAKI
OUCHIDA TAKASHI
OUCHIDA TAKASHI
Application Number:
JP2020079599A
Publication Date:
July 27, 2020
Filing Date:
April 28, 2020
Export Citation:
Assignee:
YANMAR POWER TECHNOLOGY CO LTD
International Classes:
B63H20/28; B63H11/08; B63H20/00
Domestic Patent References:
| JPH08239090A | 1996-09-17 | |||
| JP2007276609A | 2007-10-25 |
Foreign References:
| US5574246A | 1996-11-12 | |||
| US9359044B2 | 2016-06-07 |
Attorney, Agent or Firm:
Satoshi Watanabe