US 6,892,595 B2Granted

Transmission of a working vehicle

OwnerToru Inoue, Toshiyuki Hasegawainventors

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Abstract

A compact transmission includes a reliable wet brake, which is disposed in a brake chamber formed on an outer surface of a sidewall of a housing of the transmission. Engine power is transmitted through a continuously variable transmission to an input shaft of the transmission. An intermediate shaft is drivingly connected to the input shaft through a reversing mechanism for changing the traveling direction of the vehicle. An axle is drivingly connected to the intermediate shaft through a deceleration gear train. The intermediate shaft is provided thereon with the reversing mechanism and a pinion of the deceleration gear train, and projects through the brake chamber so as to be provided thereon with the wet brake. Fluid in the housing is splashed by a gear of the deceleration gear train so as to flow into the brake chamber, and is returned into the housing.

Claims10

Dependent claims

A transmission of a working vehicle having a prime mover and a continuously variable transmission, comprising:

a housing, whose interior serves as a fluid sump;
an input shaft supported by the housing so as to receive power of the prime mover through the continuously variable transmission;
a reversing mechanism for changing the traveling direction of the vehicle;
an intermediate shaft drivingly connected to the input shaft through the reversing mechanism;
an axle supported by the housing;
a deceleration gear train drivingly connecting the intermediate shaft to the axle, the deceleration gear train including a pinion, wherein the reversing mechanism is disposed on one end portion of the intermediate shaft, and the pinion of the deceleration gear train is disposed on the other end portion,
a brake chamber formed on an outer surface of a sidewall of the housing oppositely to the pinion with respect to the sidewall, and
a wet brake constructed on an end portion of the intermediate shaft in the brake chamber, wherein the end portion of the intermediate shaft projects through the sidewall of the housing into the brake chamber, and wherein the fluid in the fluid sump is splashed by a gear of the deceleration gear train so as to flow into the brake chamber through the sidewall of the housing, and is returned from the brake chamber to the fluid sump.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/321,592Filed 18 Dec 2002
Priority: JP 2001-38663419 Dec 2001
Published: US 2003/0114263 A119 Jun 2003
Granted: 17 May 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F16H 37/021
Comprising essentially only toothed or friction gearings: toothed gearing combined with continuously variable friction gearing
B60T 1/062
Acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels: acting on transmission parts
F16D 65/18
Arranged in or on the brake: adapted for drawing members together , e.g. for disc brakes
F16D 65/186
Adapted for drawing members together , e.g. for disc brakes: with full-face force-applying member, e.g. annular