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US 12,311,757 B2Granted
Power transmission mechanism
AssigneeKubota Corporation
InventorsKazuto Okazaki, Sumio Yagyu
Life of this patent
Estimating the term…
Abstract
A power transmission mechanism includes an engine including a crankshaft, a flywheel connected to the crankshaft, an electric motor including a rotor to rotate together with a rotary shaft, a damper connected to the rotary shaft and the flywheel, and a driven machine to receive power from the engine and/or the electric motor. The damper is located between the engine and the electric motor in an axial direction of the rotary shaft.
Claims10
A power transmission mechanism comprising:
- an engine including a crankshaft;
- a flywheel connected to the crankshaft;
- an electric motor including a rotor to rotate together with a rotary shaft;
- a damper connected to the rotary shaft and the flywheel;
- a driven machine to receive power from the engine and/or the electric motor;
- a flywheel housing which houses the flywheel;
- a motor case which is connected to the flywheel housing;
- and
- a transmission case which is connected to the motor case and which houses a transmission;
- wherein
- the damper is located between the engine and the electric motor in an axial direction of the rotary shaft;
- the driven machine includes the transmission to transmit power from the engine and/or the electric motor to one or more wheels;
- the electric motor is housed such that the electric motor extends from an interior of the motor case to an interior of the transmission case;
- and
- the rotary shaft defines and functions as an input shaft of the transmission and extends from an interior of the flywheel housing through the interior of the motor case to the interior of the transmission case.
12 more elements
A power transmission mechanism comprising:
- an engine including a crankshaft;
- a flywheel connected to the crankshaft;
- an electric motor including a rotor to rotate together with a rotary shaft;
- a damper connected to the rotary shaft and the flywheel;
- and
- a driven machine to receive power from the engine and/or the electric motor;
- wherein
- an end surface of the flywheel that faces the damper is recessed toward an opposite end surface of the flywheel to have a recessed portion;
- the damper includes an inner section attached to the rotary shaft and an outer section attached to the flywheel, and is located between the engine and the electric motor in an axial direction of the rotary shaft such that the damper is located in the recessed portion;
- the recessed portion includes a first recessed portion and a second recessed portion, the end surface of the flywheel is recessed to define a cylinder including the first recessed portion, and an end surface of the first recessed portion is recessed to define a cylinder including the second recessed portion;
- the outer section is located in the first recessed portion;
- and
- the inner section is located in the second recessed portion.
10 more elements
A power transmission mechanism comprising:
- an engine including a crankshaft;
- a flywheel connected to the crankshaft;
- an electric motor including a rotor to rotate together with a rotary shaft;
- a damper connected to the rotary shaft and the flywheel;
- a driven machine to receive power from the engine and/or the electric motor;
- a rotation detector to detect a phase of rotation of the rotor;
- a bearing which rotatably supports the rotary shaft;
- and
- a support cylinder which supports an outer circumferential surface of the bearing;
- wherein
- the damper is located between the engine and the electric motor in an axial direction of the rotary shaft;
- the engine is located on one of opposite sides of the damper in the axial direction;
- the electric motor and the rotation detector are located on the other of the opposite sides of the damper in the axial direction;
- and
- the rotation detector is located in an interior space of the support cylinder.
12 more elements
Dependencies are inferred from the claim text.