| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress a motion loss at HST-mode transmission while being transmitted to a traveling device by HMT-mode transmission and HST-mode transmission. <P>SOLUTION: This speed change transmission device comprises a transmission switch clutch mechanism 70 which can freely change a synthetic transmission state that the HMT-mode transmission at which a synthetic drive force generated by the planetary transmission part 40 is transmitted to an output rotating body 24 appears, to a single transmission state that a planetary transmission part 40 is interlocked to a motor shaft 33a while disconnecting the interlock of the planetary transmission part 40 to an input shaft 22, and the motor shaft 33a is interlocked to the output rotating body 24 so as to integrally rotate a sun gear 42 constituting the planetary transmission part 40, a planetary gear 43 and a ring gear 44 together with the motor shaft 33a so as to make the HST mode at which an output of the hydraulic continuously variable transmission 30 is singly transmitted to the output rotating body 24 appear, and while the HST transmission appears. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
