Title:
MARINE PROPULSION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2012/035913
Kind Code:
A1
Abstract:
Provided is a marine propulsion apparatus in which an increase in the size of gear shapes and an increase in propulsion resistance can be minimized and a propulsion apparatus having greater output can be obtained. An azimuth propulsion device (1A) is configured so that driving force is transmitted to a vertical drive shaft (9) through an inboard bevel gear unit (6) from an inboard horizontal drive shaft (8) linked to a motor (5), and the driving force is further transmitted from the vertical drive shaft (9) to an in-pod horizontal drive shaft (10) through an in-pod bevel gear unit (7) to drive a propeller (3), wherein the vertical drive shaft (9) comprises a hollow outer drive shaft (9a) provided with bevel gears (6b, 7b) at the upper and lower ends of the shaft, and an inner drive shaft (9b) provided with bevel gears (6c, 7c) at the upper and lower ends of the shaft and disposed inside the outer drive shaft (9a). Meshed engagement is established between the bevel gears (6b, 6c) and the bevel gear (6a) of the inboard horizontal drive shaft (8), as well as between the bevel gears (7b, 7c) and the bevel gear (7a) of the in-pod horizontal drive shaft (10), forming two driving force transmission systems.
Inventors:
KAGIMOTO YOSHIMI (JP)
AKIYAMA YO (JP)
AKIYAMA YO (JP)
Application Number:
PCT/JP2011/068152
Publication Date:
March 22, 2012
Filing Date:
August 09, 2011
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
KAGIMOTO YOSHIMI (JP)
AKIYAMA YO (JP)
KAGIMOTO YOSHIMI (JP)
AKIYAMA YO (JP)
International Classes:
B63H5/125; B63H5/10; B63H23/04; F16H1/14; F16H1/22
Foreign References:
| JP2011025885A | 2011-02-10 | |||
| JPH0924896A | 1997-01-28 | |||
| JPH0516881A | 1993-01-26 | |||
| JP2004136782A | 2004-05-13 |
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
Takaharu Fujita (JP)
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Claims: