POWER TRANSMISSION DEVICE
FIG3 is a skeleton diagram of a power transmission device according to a third embodiment 
A third embodiment will be described with reference to FIG3. In the first embodiment, the case where the first input shaft 11 and the second input shaft 12 are relatively rotatably coupled to each other via the pilot bearing (not illustrated) has been described. On the contrary, in the third embodiment, the case where a second clutch 51 disconnecting or connecting the first input shaft 11 and the second input shaft 12 will be described. It should be noted that the same portions as the portions described in the first embodiment are indicated by the same reference numerals, and the description thereafter is omitted. FIG3 is a skeleton diagram of a power transmission device 50 according to the third embodiment. As illustrated in FIG3, in the power transmission device 50, the second clutch 51 is disposed between the first input shaft 11 and the second input shaft 12 disposed on the same axis. The second clutch 51 disconnects or connects the first input shaft 11 and the second input shaft 12. The second clutch 51 adopts any clutch, such as the engaging clutch and a friction clutch. Of course, synchromesh can be incorporated into the second clutch 51.
diagram
17
differential gear
14
output shaft
12
second input shaft
23
second gear
35
sixth gear
22
first gear
18
wheels
21
first speed reduction mechanism
31
16
second motor
33
fourth gear
34
fifth gear
50
power transmission device
15
first motor
3
andFig.
32
third gear
['1. A power transmission device comprising: a first input shaft and a second input shaft coupled to a first motor and a second motor, respectively, and disposed on the same axis; a first speed reduction mechanism transmitting the rotation of the first input shaft to an output shaft via an intermediate shaft; a second speed reduction mechanism transmitting the rotation of the second input shaft to the output shaft via the intermediate shaft at a speed reduction ratio different from the speed reduction ratio of the first speed reduction mechanism; and a first clutch disconnecting or connecting the transmission of the power of the first speed reduction mechanism.']