A planetary gear has a sun gear having external teeth on an outer peripheral side, a plurality of pinion gears engaged with the sun gear, a carrier supporting the plurality of pinion gears, a circular oil catch plate on an end of the carrier, and a rotation member having a ring gear, on an outer peripheral side of the carrier and the oil catch plate. An engaging element engaged with the rotation member is disposed on an outer periphery of the planetary gear. The oil catch plate includes an open close valve which opens a passage at at least a predetermined rotation number. Lubrication oil supplied to the planetary gear is guided to the engaging element through the passage when the open/close valve is opened. This enables adjusting of the lubrication amount in accordance with a variation occurring in a ratio of a lubrication amount to each part.

Claims

5 · 1 independent · depth 3

5 granted claims

›1.independentA lubrication structure for a driving force transmission device, comprising:na planetary gear having a plurality of rotation elements disposed in a pr…+4

›2.↳ 1The lubrication structure for a driving force transmission device according to claim 1, wherein the open/close means is an open/close valve closing th…d2+1

›3.↳ 1The lubrication structure for a driving force transmission device according to claim 1, wherein the lubrication oil guiding member is formed in a circ…d2+1

Classifications

3 codes

IPC · International Patent Classification

Section F — Mechanical engineering; lighting; heating; weapons

F16D13/52
F16H57/04
F16D13/74

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Pendency

2.9 y

1,056 days filing → grant

Office actions

none on record

Responses

no RCE

Examiner

Dirk Wright

art unit 3659 · TC 3600

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Citations: 13 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20150292613 A1	15 Oct 2015

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