Lubrication device in transmission unit for automotive vehicles
This patent describes a transmission unit for automotive vehicles, which consists of: a casing arranged to store an amount of lubricating oil in a bottom portion thereof and having a pair of carrier portions at the opposite sides thereof; a differential gear unit arranged within the casing and having a pair of side-journals rotatably supported by a pair of axially spaced side-bearings carried on the respective carrier portions of the casing; a ring gear integral with the differential gear unit and in mesh with an output gear on an output shaft of the transmission unit to drive the differential gear unit; a pair of wheel axles extending outwardly through the respective side-journals from the differential gear unit and surrounded by a pair of annular seal members carried on the respective carrier portions; a pair of annular shim plates interposed between each of the carrier portions and each of the side-bearings to position the respective side-journals in place; and passage means for leading lubricating oil picked up by the ring gear into a pair of annular side-spaces formed around each of the wheel axles between the respective side-bearings and the respective seal members; wherein each of the annular shim plates is formed the inner peripheral portion thereof with circumferentially spaced radial projections and recesses which are arranged in such a manner that a portion of the lubricating oil flowing along each outside peripheral portion of the annular shim plate is guided radially inwardly by the radial projections of the respective shim plates to flow onto each of the wheel axles for lubrication of the side-journals.
- Assignee:
- Toyota Jidosha Kabushiki Kaisha, Aichi
- Patent Number(s):
- US 4586395
- OSTI ID:
- 5543253
- Country of Publication:
- United States
- Language:
- English
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Support structure of differential gear unit
Related Subjects
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
ANNULAR SPACE
BEARINGS
CONFIGURATION
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
GEARS
JOURNAL BEARINGS
LUBRICANTS
LUBRICATING OILS
LUBRICATION
MACHINE PARTS
MECHANICAL TRANSMISSIONS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SEALS
SPACE
STORAGE
VALVES
VEHICLES