Planetary gear device for vehicle, having clutch drum provided with retainer ring

This application is based on Japanese Patent Application No. 2002-175109, the contents of which are incorporated hereinto by reference. A vehicle planetary gear device including a sun gear, a carrier, a ring gear, a clutch drum, clutch plates axially slidably fitted in the drum, a backing plate fixe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kakamu, Michitaka, Yasue, Hideki
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:This application is based on Japanese Patent Application No. 2002-175109, the contents of which are incorporated hereinto by reference. A vehicle planetary gear device including a sun gear, a carrier, a ring gear, a clutch drum, clutch plates axially slidably fitted in the drum, a backing plate fixedly disposed in the drum on one side of a series of clutch plates, and a piston axially movable fitted in the drum and disposed on the other side of the series of clutch plates, and wherein the ring gear is fixedly fitted in the drum with its engaging teeth held in engagement with engaging grooves of the drum, and at least one retainer ring is fixed on the drum and disposed in contact with the teeth of one-piece member consisting of the ring gear and the backing plate, whereby axial movements of the backing plate and the ring gear relative to the drum are prevented by the at least one retainer ring.