| 摘要 |
A power switching device includes a power transmission unit and a driving unit. The transmission unit includes a differential, an axle aligned with the differential, and a coupler sleeved movably on one of the differential and the axle. The driving unit includes a controller, a first transmission mechanism driven by the controller, and a second transmission mechanism driven by the first transmission mechanism. The controller is a solenoid or an electric actuator, and is operable to activate the second transmission mechanism. The coupler can be moved by the second transmission mechanism to interconnect the differential and the axle, so as to allow for co-rotation of the axle with the differential. |
| 主权项 |
1. A vehicle power switching device comprising:
a power transmission unit including an input shaft adapted to be driven by a vehicle power to rotate, an output shaft aligned with and spaced apart from said input shaft, a first coupler sleeved movably on one of said input shaft and said output shaft, a differential driven by said differential, an axle aligned with said differential, and a second coupler sleeved movably on one of said differential and said axle and movable to interconnect said differential and said axle; and a driving unit including a controller being one of a solenoid and an electric actuator, a first transmission mechanism driven by said controller, and a second transmission mechanism driven by said first transmission mechanism, said controller being operable to activate said first transmission mechanism to thereby move said first coupler among a two-wheel drive position, a four-wheel drive position, and a differential locking position such that, when said first coupler is at the two-wheel drive position, said first coupler is sleeved on only the one of said input shaft and said output shaft, so that said input shaft is disconnected from said output shaft; when said first coupler is at the four-wheel drive position, said first coupler is sleeved on said input shaft and said output shaft to allow for co-rotation of said input shaft and said output shaft, and said differential is disconnected from said axle; and when said first coupler is moved from the four-wheel drive position to the differential locking position, said second transmission mechanism is driven by said first transmission mechanism to move said second coupler to interconnect said differential and said axle, so as to allow for co-rotation of said axle with said differential. |
