| 摘要 |
PURPOSE:To easily perform a speed change control eliminating even the necessity for forming a transmission into a large size or increasing its cost, by additionally providing a necessary number of one-way clutches corresponding to speed change shifts and one mechanical clutch and performing all the speed change controls through the one-way clutch. CONSTITUTION:The n-th-m-th speed shift gears 18, 16 in the side of an input shaft 10 can be connected with and disconnected from the input shaft 10 by their respective hydraulic clutches C2, C3, and the n-th-m-th speed shift gears 26, 24 in the side of an output shaft 11 are connected in series successively with one-way clutches OWC2, OWC3. And the n-th speed shift gear 26 of the output shaft 11 can be connected with and disconnected from the output shaft 11 through a reversing hydraulic clutch C4, while the m-th speed shift one-way clutch OWC3 can be connected with and disconnected from the output shaft 11through a mechanical clutch DC2. Accordingly, all the speed change controls can be performed interposing the one-way clutch to exist by additionally providing a necessary number of one-way clutches OWC2, OWC3 and one mechanical clutch DC2, and the speed change control can be easily performed with no necessity for forming a transmission into a large size and increasing its cost.
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