Transaxle

Patent metadata

Field	Value
Publication number	US-9551383-B2
Application number	US-201514735795-A
Country	US
Kind code	B2
Filing date	Jun 10, 2015
Priority date	Jun 13, 2014
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

A transaxle includes an input shaft, a brake, an output shaft, a mechanical transmission, a transaxle casing, and a spacing system. The brake is provided on the input shaft. The brake includes layered friction elements. The transmission transmits power from the input shaft to the output shaft. The transaxle casing includes a housing defining both a brake chamber and a transmission chamber. The brake chamber incorporates the brake. The transmission chamber incorporates the transmission. The spacing system is configured so as to provide the transaxle casing with a partition wall between the brake chamber and the transmission chamber, so as to hold a bearing in the partition wall to journal the input shaft, and so as to provide a spacer for the layered friction elements of the brake, the spacer defining a space in the axial direction of the input shaft in correspondence to a thickness of the layered friction elements in the axial direction of the input shaft.

First claim

What is claimed is:

1. A transaxle, comprising:
an input shaft;
a brake provided on the input shaft, the brake including layered friction elements;
an output shaft;
a mechanical transmission configured to transmit power from the input shaft to the output shaft;
a transaxle casing including a housing, the housing defining both a brake chamber and a transmission chamber, the brake chamber incorporating the brake, and the transmission chamber incorporating the transmission; and
a spacing system configured such that the transaxle casing is provided with a partition wall between the brake chamber and the transmission chamber so as to hold a bearing in the partition wall to journal the input shaft, and so as to provide a spacer for the layered friction elements of the brake, the spacer defining a space in the axial direction of the input shaft corresponding to a thickness of the layered friction elements in the axial direction of the input shaft,
wherein the housing is formed with the partition wall having an inner peripheral portion defining a hole through which the input shaft is passed between the brake chamber and the transmission chamber, such that the inner peripheral portion of the partition wall holds the bearing disposed in the hole, and
wherein the spacing system includes a member serving as the spacer, the member separated from the housing and disposed in the brake chamber between the partition wall and the layered friction elements.

2. The transaxle according to claim 1 ,
wherein the spacing system includes a bearing holder separated from the transaxle casing,
wherein the bearing holder includes a cylindrical portion that holds the bearing, and

wherein the bearing holder includes a spacer portion disposed in the brake chamber so as to serve as the spacer.

Assignees

• Kanzaki Kokyukoki Mfg Co Ltd

Inventors

• Fukuda Toshiyuki
• Tsukamoto Michio

Classifications

• Y10T74/2186

  Gear casings · CPC title

• B60K17/35 Primary

  including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches · CPC title

• B60K17/34

  for driving both front and rear wheels, e.g. four wheel drive vehicles · CPC title

• F16D13/58 Primary

  Details {(tools for assembling or disassembling clutches B25B27/0064)} · CPC title