Main shaft gear mechanism in a transmission for a vehicle
AssigneeNtn Corporation
InventorsTakashi Tsujimoto, Mamoru Mizutani
Life of this patent
Estimating the term…
Abstract
A bearing unit A comprises a main shaft gear 1 integrally having a tooth section 1a always meshed with a sub shaft gear 6 at the outer circumference, a pair of inner rings 2 fitted in the outer circumference of the main shaft 5, double-row tapered rollers 3 disposed between the raceway surface of the main shaft gear 1 and that of the inner ring 2, and a pair of cages 4 for respectively retaining each row of tapered rollers 3. The pockets 4a of the cage 4 are unequally pitched, wherein the tapered rollers 3 housed in the pockets 4a are unequally disposed at the circumference.
Claims10
A main shaft gear mechanism in a transmission for a vehicle comprising:
- a sub shaft adapted to be interlocked with an engine side input shaft for a vehicle;
- a sub shaft gear attached to said sub shaft;
- a main shaft adapted to be interlocked with a drive wheel side output shaft;
- a main shaft gear integrally having a tooth section always meshed with said sub shaft gear and having a double row raceway surface at the inner circumference thereto;
- a pair of bearing inner rings being fitted in the outer circumference of said main shaft and respectively having a raceway surface on the outer circumference thereof;
- double-row tapered rollers being disposed between the double-row raceway surface of said main shaft gear and the raceway surface of said pair of bearing inner rings and being retained by a cage at an appointed interval of the circumference;
- an unbalancing means for causing an assembly consisting of each row of rollers and said cage to be weight-unbalanced;
- a clutch gear connected to said main shaft gear;
- and
- a synchronization mechanism for transmitting or interrupting engine torque between said main shaft gear and said main shaft via said clutch gear.
A main shaft gear mechanism in a transmission for a vehicle comprising:
- a main shaft gear having a tooth section always meshed with a sub shaft gear of a transmission for a vehicle at the outer circumference and having a double-row raceway surface at the inner circumference;
- a pair of bearing inner rings being fitted in the outer circumference of said main shaft and respectively having a raceway surface on the outer circumference thereof;
- double-row tapered rollers being disposed between the double-row raceway surface of said main shaft gear and the raceway surface of said pair of bearing inner rings and being retained by a cage at an appointed interval of the circumference;
- and
- an unbalancing means for causing an assembly consisting of each row of rollers and said cage to be weight-unbalanced.
Dependencies are inferred from the claim text.