| 摘要 |
Provided is a power device capable of reducing loss in a fluid path switching mechanism and capable of improving fastness. When a second member (33e) is at a first position relative to a first member (33d), first communication ports (pp) that communicate with a fluid pressure supply source (14) and second and third communication ports (pm1, pm2) that communicate to first and second pressure chambers (13b, 13c) in a hydraulic motor (13), respectively, change to a communicating state and the second and third communication ports (pm1, pm2) and fourth communication ports (pr) that are connected to a reservoir section (31) change to a disconnected state. When the second member is at a second position, the first and second communication ports change to a connected state therebetween, the first and third communication ports change to a disconnected state therebetween, the second and fourth communication ports change to a disconnected state therebetween, and the third and fourth communication ports change to a connected state therebetween; when the second member is in a third position, the first and second communication ports change to a disconnected state therebetween, the first and third communication ports change to a connected state therebetween, the second and fourth communication ports change to a connected state therebetween, and the third and fourth communication ports change to a disconnected state therebetween. The first to fourth communication ports comprise a plurality of communication port group sets having said communication ports as one set. |
