TH47187B - Engine units and straddle vehicles - Google Patents

Abstract

DC60 problems to be solved. To prevent the expansion of the unit size And to prevent abrasion and degradation of the inserted bearing Between the rotating shaft supported in the overhang and the rotating body, the V-Belt Continuous Variable Transmission (CVT) solution that makes up the engine unit has a shaft. The second belt wheel 62, which rotates by the clutch body 78 of the centrifugal clutch 41, the second belt wheel shaft 62 is supported in a protrusion through the bearing 75 and 76.The engine unit has a gear 80 which rotates. With a clutch hub 77 between the second belt axle 62 and gear 80, bearings 81 (81a and 81b) are inserted, formed by a cage-type needle bearing and a roller bearing form of a bearing. Needle Problems that will be solved To prevent the expansion of the unit size And to prevent abrasion and degradation of the inserted bearing Between the rotating shaft supported in the overhang and the rotating body, the V-Belt Continuous Variable Transmission (CVT) solution that makes up the engine unit has a shaft. The second belt wheel 62, which rotates by the clutch body 78 of the centrifugal clutch 41, the second belt wheel 62 is supported in the overhang through the 75 and 76 bearings.The engine unit has a gear 80 which also rotates. Clutch hub 77 Between the second belt axle 62 and gear 80 there is a bearing 81 (81a and 81b) that is formed with a cage-type needle bearing and a roller bearing form a bearing. needle

Claims (15)

1. The engine unit consists of a rotating shaft rotated by the provided driving force, a first bearing into which the rotating shaft is inserted, a rotating body into which the first bearing is inserted, and a second bearing into which the rotating shaft is inserted, with the shaft supported in a manner that extends through the second bearing, and the first bearing being a needle bearing. 2. The engine unit under claim 1 is subsequently comprised of a clutch with a clutch body and clutch hub, where the rotating body is a gear that rotates with the clutch hub. 3. The engine unit under claim 1 is subsequently composed of a group of needle bearings as the primary bearing, where the groups of needle bearings are positioned adjacent to each other in the axial direction. 4. The engine unit under claim 1 is of the type in which the first bearing is positioned between two adjacent second bearings in the axial direction. 5. The engine unit under claim 1 is of the cage and roller needle bearing type. 6. The engine unit under claim 1 is subsequently fitted with a continuously variable transmission (V-belt) system, where the rotating shaft is the belt pulley shaft of the V-belt continuously variable transmission system. 7. The engine unit according to claim 1 is of the type in which the second bearing consists of an inner ring on which the rotating shaft is inserted and an outer ring which is positioned radially outside the inner ring and rotates relative to the inner ring, and the rotating body and the outer ring are separated by a certain distance in the axial direction. 8. The engine unit under claim 7 consists of a gap-generating device located between the body of the turning ring and the second bearing, where the body of the turning ring and the outer ring of the second bearing are separated by a defined distance through this gap-generating device. 9. The engine unit under claim 8 is of the type where the gap-creating element is a washer. 10. The engine unit under claim 8 is of the type where the gap-generating element is a locking ring. 11. The engine unit under claim 7 is of the type in which the inner ring extends from the outer ring to the body of the rotating part, and the body of the rotating part and the inner ring are in contact so that the body of the rotating part and the outer ring are separated by a defined distance. 12. The engine unit under claim 7 is of the type in which the rotating body is moved so that the rotating body does not come into contact with the outer ring when the rotating body and inner ring are in contact. 13. The engine unit under claim 7 is subsequently comprised of a clutch with a clutch body and clutch hub, and a continuously variable transmission (V-belt) where the rotating body is the gearbox rotating on the clutch hub, and the rotating shaft is the belt pulley of the continuously variable transmission (V-belt). 14. The engine unit according to claim 7 is subsequently incorporated with a lubrication supply mechanism for supplying at least the rotating body and second bearing to which lubrication is supplied. 15. A straddling vehicle consisting of an engine unit as described in any of Claims 1 through 14.