Transaxle

Patent metadata

Field	Value
Publication number	US-10464418-B2
Application number	US-201815897638-A
Country	US
Kind code	B2
Filing date	Feb 15, 2018
Priority date	Feb 17, 2017
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A transaxle may include an input shaft including a first shaft and a second shaft; and a torque limiter including an input unit and connected to the other end of the first shaft so as to be relatively non-rotatable, a driven unit connected to a second end of the second shaft so as to be relatively non-rotatable, and a region transmitting a torque between the input unit and the driven unit while limiting the torque to a predetermined value or less. By connecting the input unit and the driven unit of the torque limiter with a one-way clutch, the second shaft is rotatable relative to the first shaft when a rotation direction of the first shaft is a first direction, and the second shaft is non-rotatable relative to the first shaft when the rotation direction is a second direction opposite to the first direction.

First claim

What is claimed is:

1. A transaxle comprising:
an axle housing;
a pair of output shafts rotatably supported by the axle housing;
an input shaft comprising:
a first shaft rotatably supported by the axle housing, a first end of the first shaft protruding from the axle housing, and
a second shaft rotatably supported by the axle housing at a second end of the first shaft on an axis line identical to that of the first shaft, a first end of the second shaft, which is an end opposite to the first shaft, being connected to the output shafts; and

a torque limiter comprising:
an input unit inserted in a middle position of the input shaft in the axle housing, and connected to the second end of the first shaft so as to be relatively non-rotatable,

a driven unit connected to a second end of the second shaft so as to be relatively non-rotatable, and
a region transmitting a torque between the input unit and the driven unit while limiting the torque to a predetermined value or less,

wherein, by connecting the input unit and the driven unit with a one-way clutch, the second shaft is rotatable relative to the first shaft when a rotation direction of the first shaft is a first direction, and the second shaft is non-rotatable relative to the first shaft when the rotation direction is a second direction opposite to the first direction.

2. The transaxle according to claim 1 , wherein, in the axle housing, a clutch that switches between connection and disconnection of the first shaft and the torque limiter is interposed between the first shaft and the torque limiter.

3. A transaxle for a vehicle comprising:
an axle housing;
a pair of output shafts rotatably supported by the axle housing;
an input shaft comprising:
a first shaft rotatably supported by the axle housing, a first end of the first shaft protruding from the axle housing, and
a second shaft rotatably supported by the axle housing at a second end of the first shaft on an axis line identical to that of the first shaft, a first end of the second shaft, which is an end opposite to the first shaft, being connected to the output shafts; and

a torque limiter and a one-way clutch connected in parallel between the first shaft and the second shaft,
wherein,
the one-way clutch is set to disengage when the vehicle moves forward and is set to engage when the vehicle moves backward, and the torque limiter functions when the vehicle moves forward and does not function when the vehicle moves backward.

Assignees

• Kanzaki Kokyukoki Mfg Co Ltd

Inventors

• Tsukamoto Michio

Classifications

• B60K2023/085

  automatically actuated · CPC title

• F16D43/2024

  the axially moving part being coaxial with the rotation, e.g. a gear with face teeth · CPC title

• B60K17/35

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

• B60K17/16

  of differential gearing · CPC title

• F16H57/037 Primary

  Gearboxes for accommodating differential gearings (rotating cases for differential gearings F16H48/40) · CPC title