US 6,637,294 B2Granted

Transmission for vehicle

AssigneeKanzaki Kokyukoki Mfg. Co., Ltd.

InventorShusuke Nemoto

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Abstract

The present invention provides a transmission for vehicle with an HST interposed in a drive power transmission path that includes: a housing; a center section having a plate-like shape with a first surface and a second surface opposite to the first surface with respect to a drive power transmission direction, and the center section being disposed within the housing; an input shaft extending through the center section; an output shaft disposed parallel with the input shaft and away from the same in a plate surface direction of the center section; a hydraulic pump body supported on the first surface of the center section and operatively connected to the input shaft; a hydraulic motor body supported on the second surface of the center section and being adapted to drive the output shaft upon receiving operational fluid discharged from the hydraulic pump body; a bearing plate fixed within the housing, facing either one of the first and second surfaces of the center section for supporting the input shaft; and an auxiliary pump disposed on the bearing plate and being adapted to be driven through the input shaft.

Claims6

Dependent claims

A transmission for a vehicle with a hydrostatic transmission and a power shift device interposed in tandem in a drive power transmission path comprising:

a housing;
first and second plate-like members disposed within said housing in such a manner as to be positioned away from each other along a drive power transmission direction, while respectively having each-other facing surfaces, through which said first and second plate-like members face each other;
an input shaft extending through said first plate-like member;
an output shaft disposed parallel with the input shaft and away from the same in a plate surface direction of the first plate-like member;
a hydraulic pump body supported on a surface opposite to the each-other facing surface of the first plate-like member, and operatively connected to the input shaft;
a hydraulic motor body supported on the each-other facing surface of the first plate-like member, and being adapted to drive the output shaft upon receiving operational fluid discharged from the hydraulic pump body;
an auxiliary pump disposed on the second plate-like member and being adapted to be driven through the shaft;
and
wherein the second plate-like member supports thereon a clutch shaft of the power shift device, and has a hydraulic fluid passage for supplying therethrough pressurized hydraulic fluid discharged from said auxiliary pump to a hydraulic clutch on said clutch shaft.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/949,812Filed 12 Sep 2001
Priority: JP 2000-28247718 Sep 2000
Published: US 2002/0033093 A121 Mar 2002
Granted: 28 Oct 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16H 47/02
Combinations of mechanical gearing with fluid clutches or fluid gearing: the fluid gearing being of the volumetric type
B60K 17/28
Arrangement or mounting of transmissions in vehicles: characterised by arrangement, location, or type of power take-off
B60K 17/105
Of fluid gearing: units comprising at least a part of the gearing and a torque-transmitting axle, e.g. transaxles
Y10T 74/19037
Plural power paths to and/or from gearing: one path includes fluid drive