Pulley device for continuously variable transmission
AssigneesNissan Moter Co, Ltd., Aichi Machine Industry Co., Ltd.
InventorsMasahiko Yamada, Toshio Yamaguchi, Kiyofumi Tanaka
Life of this patent
Estimating the term…
Abstract
A pulley device for a continuously variable transmission includes a shaft having first and second ends, the second end being formed with two axially separated ring grooves. A C-shaped ring is engaged with one of the two ring grooves disposed near to a movable conical plate. A ring-shaped retainer is arranged to restrain radial movement of the C-shaped ring. A snap ring is engaged with the other of the two ring grooves to restrain an axial position of the retainer.
Claims12
A pulley device for a continuously variable transmission, comprising:
- a casing;
- a shaft rotatably supported to said casing, said shaft having first and second ends, said second end being formed with at least one groove, said at least one groove including a ring groove formed on an outer periphery of said second end of said shaft;
- a first conical plate fixed to said first end of said shaft;
- a second conical plate axially movably engaged with said second end of said shaft, said second conical plate cooperating with said first conical plate to form a V-shaped groove;
- a hydraulic pressure cylinder chamber engaged with said shaft and adjacent to said second conical plate, said hydraulic pressure cylinder chamber receiving hydraulic pressure to axially move said second conical plate;
- a ring engaged with said ring groove of said shaft, said ring restraining axial movement of said chamber;
- a retainer arranged adjacent to said ring, said retainer restraining radial movement of said ring;
- and
- a bearing engaged with said second end of said shaft and having outer and inner races, said bearing being disposed more distant from said second conical plate than said retainer, said bearing abutting on said retainer to restrain axial movement thereof.
A pulley device for a continuously variable transmission, comprising:
- a casing;
- a shaft rotatably supported to said casing, said shaft having first and second ends, said second end having a ring groove formed on an outer periphery thereof;
- a first conical plate fixed to said first end of said shaft;
- a second conical plate axially movably engaged with said second end of said shaft, said second conical plate cooperating with said first conical plate to form a V-shaped groove;
- a hydraulic pressure cylinder chamber engaged with said shaft and adjacent to said second conical plate, said hydraulic pressure cylinder chamber receiving hydraulic pressure to axially move said second conical plate;
- a ring engaged with said ring groove of said shaft, said ring restraining axial movement of said chamber;
- and
- a retainer arranged adjacent to said ring, said retainer restraining radial movement of said ring.
A pulley device for a continuously variable transmission, comprising:
- a casing formed with a recess;
- a shaft rotatably supported to said casing, said shaft having first and second ends, said second end having a ring groove formed on an outer periphery thereof;
- a first conical plate fixed to said first end of said shaft;
- a second conical plate axially movably engaged with said second end of said shaft, said second conical plate cooperating with said first conical plate to form a V-shaped groove;
- a hydraulic pressure cylinder chamber engaged with said shaft and adjacent to said second conical plate, said hydraulic pressure cylinder chamber receiving hydraulic pressure to axially move said second conical plate;
- a ring engaged with said ring groove of said shaft, said ring restraining axial movement of said chamber;
- a retainer arranged adjacent to said ring, said retainer restraining radial movement of said ring;
- and
- a bearing engaged with said second end of said shaft and having outer and inner races, said bearing being disposed more distant from said second conical plate than said retainer,
- said outer race having a diameter substantially equal to a diameter of said recess of said casing.
Dependencies are inferred from the claim text.