PROPULSION DEVICE FOR SHIP

• US 20190016432A1
• Filed: 12/21/2016
• Published: 01/17/2019
• Est. Priority Date: 12/22/2015
• Status: Active Grant

• Current Assignee: Yanmar Power Technology Co., Ltd.
• Original Assignee: Yanmar Company Limited (Yanmar Holdings Co., Ltd.)
• Inventors: HASHIMOTO, Yuji
• Granted Patent: US 10,457,372 B2
• Time in Patent Office: Days
• CPC Class Codes: B63B 2035/009 Wind propelled vessels comprising arrangements, installations or devices specially adapted therefor, other than wind propulsion arrangements, installations, or devices, such as sails, running rigging, or the like, and other than sailboards or the like or related equipment
• CPC Class Codes: B63H 2005/075 using non-azimuthing podded propulsor units, i.e. podded units without means for rotation about a vertical axis, e.g. rigidly connected to the hull
• CPC Class Codes: B63H 23/08 with provision for reversing drive
• CPC Class Codes: B63H 23/20 with separate forward and astern propulsion power units, e.g. turbines
• CPC Class Codes: B63H 23/30 characterised by use of clutches
• CPC Class Codes: F16D 41/00 Freewheels or freewheel clutches cycle brakes controlled by back-pedalling B62L5/00 ; one-way linear clutches F16B7/16
• CPC Class Codes: F16D 41/04 combined with a clutch for locking the driving and driven members F16D41/02, F16D41/24 take precedence
• CPC Class Codes: F16H 3/14 Gearings for reversal only

Abstract

A propulsion device for a ship capable of preventing idling of a propeller without any limitation on the type of clutch. The propulsion device includes: a forward and reverse switching clutch (17) for transmitting the driving power from an input shaft (11) to a forward gear (13A) or a reverse gear (13B); a forward one-way clutch (18A), disposed between the input shaft (11) and the forward gear (13A), for connecting the forward gear (13A) and the input shaft (11) when the forward gear (13A) is rotated at a higher speed than that of the input shaft (11); and a reverse one-way clutch (18B), disposed between the input shaft (11) and the reverse gear (13B), for connecting the reverse gear (13B) and the input shaft (11) when the reverse gear (13B) is rotated at a higher speed than that of the input shaft (11).

Claims

1. A propulsion device for a ship, comprising:

an input shaft connected to a driving source;

a forward gear provided on the input shaft;

a reverse gear provided on the input shaft;

an output gear engaged with the forward gear and the reverse gear;

an output shaft configured to receive driving power transmitted from the output gear;

a forward and reverse switching clutch configured to transmit driving power from the input shaft to the forward gear or the reverse gear;

a forward one-way clutch disposed between the input shaft and the forward gear, the forward one-way clutch connecting the forward gear and the input shaft to each other in a case where the forward gear is rotated at a higher speed than a speed at which the input shaft is rotated; and

a reverse one-way clutch disposed between the input shaft and the reverse gear, the reverse one-way clutch connecting the reverse gear and the input shaft to each other in a case where the reverse gear is rotated at a higher speed than a speed at which the input shaft is rotated.