Transmission of outboard motor

摘要

A transmission is structured to include a drive shaft, a counter shaft, a gear train bridged between each of a drive shaft input shaft and output shaft and the counter shaft, and a dog clutch mechanism selectively switching a high shift speed and a low shift speed in a transmission chamber. In a lower part of a lower bearing of the counter shaft in a bottom part of the transmission chamber, a lower reserve part of lubrication oil is provided, and a lubrication oil pump sending lubrication oil to respective parts of the transmission from the lower reserve part is provided.

主权项

1. A transmission of an outboard motor in which a crank shaft extending in a vertical direction of an engine mounted on an upper side is coupled to a drive shaft, a gear transmission capable of switching between at least two different speeds, the gear transmission being interposed between a drive shaft input shaft coupled to the crank shaft and a drive shaft output shaft driving a propeller, which are separated into an upper part and a lower part of the drive shaft, wherein:
the transmission is housed in a transmission chamber formed in a drive shaft housing and comprises the drive shaft, a counter shaft disposed in parallel with the drive shaft, a gear train bridged between each of the drive shaft input shaft and output shaft and the counter shaft, and a dog clutch mechanism selectively switching between the at least two different speeds; and the transmission comprises, in a lower part of a lower bearing of the counter shaft in a bottom part of the transmission chamber, a lower reserve part of lubrication oil reserving lubrication oil flowed down via this lower bearing, and a lubrication oil pump sending lubrication oil to respective parts of the transmission from this lower reserve part of lubrication oil.