Vehicle transmission and vehicle having the same
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorTomomi Suzuki
Life of this patent
Estimating the term…
Abstract
A vehicle transmission, including: a drive shaft configured to receive a shifted torque; a middle shaft arranged in parallel to the drive shaft; a first bearing that rotatably supports the drive shaft; a second bearing that rotatably supports the middle shaft; a first middle gear attached to a portion of the drive shaft that is on a further distal side of the drive shaft than is the first bearing; and a second middle gear attached to a portion of the middle shaft that is on a further distal side of the middle shaft than is the second bearing, the second middle gear being connected to the first middle gear.
Claims7
A vehicle transmission, comprising:
- a drive shaft configured to receive a shifted torque;
- a middle shaft arranged in parallel to the drive shaft;
- a first bearing that rotatably supports the drive shaft;
- a second bearing that rotatably supports the middle shaft;
- a first middle gear attached to a portion of the drive shaft that is on a further distal side of the drive shaft than the first bearing;
- a second middle gear attached to a portion of the middle shaft that is on a further distal side of the middle shaft than the second bearing, the second middle gear being connected to the first middle gear;
- a transmission case supporting the first bearing and the second bearing, wherein:
- the transmission case includes:
- a tubular portion extending from another portion of the middle shaft that is on the further distal side of the middle shaft than the first bearing and the second bearing, the tubular portion being on an outer side of the first middle gear and the second middle gear in a radial direction of the middle shaft, and
- a partition wall that partitions an inside of the tubular portion into a gear chamber and an oil passageway, the oil passageway being on the outer side of the gear chamber in the radial direction, with the partition wall located therebetween and separating the oil passageway from the first middle gear and the second middle gear in the radial direction along the tubular portion;
- the first middle gear and the second middle gear are housed in the gear chamber;
- the transmission has therein:
- a first space that is a space on the further distal side of the middle shaft than the first middle gear and the second middle gear, and
- a second space that is a space on a further center side of the middle shaft than the first middle gear and the second middle gear;
- and
- the oil passageway connects the first space and the second space.
Dependencies are inferred from the claim text.