US 5,094,331 AGranted

Wet-type multiplate clutch

AssigneesHonda Giken Kogyo Kabushiki Kaisha, Kabushiki Kaisha F.C.C.

InventorsKatsumi Fujimoto, Hisanori Esaki, Kunihiko Azuma, Yusuke Oishi, Yasutada Suzuki

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Abstract

A wet-type multiplate clutch for selectively transmitting drive forces from an engine to a road wheel has a plurality of clutch discs adapted to be coupled to the engine and each having a frictional surface, and a plurality of clutch plates adapted to be coupled to the road wheel, of clutch discs and the clutch plates being alternately interleaved and arranged so that the clutch discs and the clutch plates can be pressed against and separated from each other. Each of the clutch discs having a ring-shaped frictional member or a plurality of frictional members on the frictional surface, and radial oil passages for allowing oil to pass therethrough and oil grooves for retaining oil therein.

Claims7

Dependent claims

A wet-type multiplate clutch for selectively transmitting drive forces from an engine to a road wheel, comprising:

a plurality of clutch discs adapted to be coupled to the engine and each having a frictional surface;
a plurality of clutch plates adapted to be coupled to the road wheel, said clutch discs and said clutch plates being alternately interleaved and arranged so that the clutch discs and the clutch plates can be pressed against and separated from each other;
and
each of said clutch discs having a ring-shaped frictional member on said frictional surface, said frictional member defining a plurality of discrete frictional surfaces spaced at predetermined intervals with oil passages being defined between each adjacent frictional surface, said discrete frictional surfaces having respective oil grooves defined therein with a boundary surface extending substantially perpendicularly to the bottom of said oil grooves, said oil grooves opening radially centrally of the clutch disc, and being of a rectangular parallelepiped configuration such that when said clutch discs and said clutch plates are pressed against each other, each of said oil grooves defines a respective volume within said rectangular parallelpiped configuration for retaining oil therein while said clutch is rotated.

1 more element

A wet-type multiplate clutch for selectively transmitting drive forces from an engine to a road wheel, comprising:

a plurality of clutch discs adapted to be coupled to the engine and each having a frictional surface;
a plurality of clutch plates adapted to be coupled to the road wheel, said clutch discs and said clutch plates being alternately interleaved and arranged so that the clutch discs and the clutch plates can be pressed against and separated from each other;
and
each of said clutch discs having a ring-shaped frictional member on said frictional surface, said frictional member defining a plurality of discrete frictional surfaces spaced at predetermined intervals with oil passages being defined between each adjacent frictional surface, said discrete frictional surfaces having respective oil grooves defined therein with a boundary surface extending substantially perpendicularly to the bottom of said oil grooves, said oil grooves opening radially centrally of the clutch disc, and being of a predetermined configuration such that when said clutch discs and said clutch plates are pressed against each other, each of said oil grooves defines a respective volume for retaining oil therein while said clutch is rotated and wherein said volume defined by each of said oil grooves is a cavity bounded on all sides thereof except a side opening radially centrally of the clutch disc.

1 more element

Dependencies are inferred from the claim text.