| 摘要 |
A forward-reverse rotation device for a continuously variable transmission is provided to reduce the manufacturing cost of a forward-reverse rotation device for a continuously variable transmission. A forward-reverse rotation device 2 for a continuously variable transmission is equipped with a planetary gear set 5, a reverse brake 7, and a forward clutch 6. The planetary gear set 5 has a sun gear 11 provided on an input shaft 8, a ring gear 14, double planetary gears 12, and a carrier 13 that axially supports the double planetary gears 12 and serves to output power to output shaft 9. The brake 7 is for allowing and prohibiting the rotation of the ring gear 14. The clutch 6 is a mechanism for coupling and releasing the input shaft 8 to and from the carrier 13. The sun gear 11 and splines 17 are formed integrally on an external circumferential surface of the input shaft 8. The clutch 6 has a clutch drum 18 that has internal splines 18e that are press-formed integrally into the clutch drum and mesh with the splines 17.
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