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US 10,208,836 B2Granted
Multi-stage transmission
AssigneeAisin Aw Co., Ltd.
InventorsMasanori Murakami, Naoya Jinnai, Takuya Nakajima
Life of this patent
Estimating the term…
Abstract
A brake of an automatic transmission holds a second ring gear of a second planetary gear stationary, and includes: friction plates and separator plates; and a drum member as a brake hub that is continuously coupled to the second ring gear and is rotatably supported by an inner tubular portion of a center support between the friction plates, for example, and the second planetary gear. The drum member and the second ring gear are coupled together via a spline.
Claims19
A multi-stage transmission comprising:
- a second planetary gear set that includes a sun gear, a planetary carrier, and a ring gear;
- and
- a second brake that configured to connect the ring gear to a case to hold the ring gear stationary and releases this connection, and configured to change speed of power transmitted from a motor of a vehicle to an input member to transmit the power to an output member, wherein
- the case has an annular support portion extending radially inward from an inner peripheral surface thereof,
- the second brake includes a plurality of friction engagement plates and a brake hub continuously coupled to the ring gear, the brake hub rotatably supported by the support portion via a bearing, the bearing being located axially between the friction engagement plates and the second planetary gear set, and
- the brake hub and the ring gear are coupled together via a spline.
3 more elements
Dependencies are inferred from the claim text.