Power transmission device and automobile including the same
AssigneeHyundai Mobis Co., Ltd.
InventorKyung Won Han
Life of this patent
Estimating the term…
Abstract
A power transmission device including: a motor to drive a rotary shaft; a first reducer connected to the rotary shaft to reduce rotational angular velocity of the rotary shaft; a second reducer connected to the rotary shaft to reduce rotational angular velocity of the rotary shaft; a first clutch disposed between the rotary shaft and the first reducer to connect and disconnect the rotary shaft and the first reducer; a second clutch disposed between the rotary shaft and the second reducer to connect and disconnect the rotary shaft and the second reducer; and a third clutch disposed outside the second reducer to connect and disconnect the second reducer and an external component.
Claims17
A power transmission device comprising:
- a motor configured to drive a rotary shaft;
- a first reducer connected to the rotary shaft and configured to reduce rotational angular velocity of the rotary shaft at a first reduction ratio;
- a second reducer connected to the rotary shaft and configured to reduce rotational angular velocity of the rotary shaft at a second reduction ratio different from the first reduction ratio;
- a first clutch disposed between the rotary shaft and the first reducer and configured to connect and disconnect the rotary shaft and the first reducer;
- a second clutch disposed between the rotary shaft and the second reducer and configured to connect and disconnect the rotary shaft and the second reducer;
- a third clutch disposed outside the second reducer and configured to connect and disconnect the second reducer and an external component;
- a fourth clutch configured to connect and disconnect the second reducer and the external component,
- wherein a path of power transmission of torque of the rotary shaft when the second reducer and the external component are disconnected by the fourth clutch is different from a path of power transmission of torque of the rotary shaft when the second reducer and the external component are engaged by the fourth clutch;
- and
- a carrier connected to the first reducer and the second reducer, wherein the third clutch and the fourth clutch are configured to provide a parking state when engaged and to prevent power from being transmitted to the carrier while in motion when disconnected.
An automobile comprising:
- a left wheel disposed on a left side of the automobile and a right wheel disposed on a right side of the automobile;
- and
- a power transmission device configured to provide torque to the left wheel and the right wheel, wherein the power transmission device comprises:
- a motor configured to drive a rotary shaft;
- a first reducer connected to the rotary shaft and configured to reduce rotational angular velocity of the rotary shaft at a first reduction ratio;
- a second reducer connected to the rotary shaft and configured to reduce rotational angular velocity of the rotary shaft at a second reduction ratio different from the first reduction ratio;
- a first clutch disposed between the rotary shaft and the first reducer and configured to connect and disconnect the rotary shaft and the first reducer;
- a second clutch disposed between the rotary shaft and the second reducer and configured to connect and disconnect the rotary shaft and the second reducer;
- a third clutch disposed outside the second reducer and configured to connect and disconnect the second reducer and an external component;
- and
- a fourth clutch configured to connect and disconnect the second reducer and the external component,
- wherein a path of power transmission of torque of the rotary shaft when the second reducer and the external component are disconnected by the fourth clutch is different from a path of power transmission of torque of the rotary shaft when the second reducer and the external component are engaged by the fourth clutch;
- and
- wherein the third clutch and the fourth clutch are configured to provide a parking state when engaged and to prevent power from being transmitted to a carrier while in motion when disconnected.
Dependencies are inferred from the claim text.