| 摘要 |
PROBLEM TO BE SOLVED: To provide a shaft driver not affected by axial vibration of a crank shaft, capable of keeping tooth bearing unchanged and easily and accurately adjusting tooth bearing between a pair of bevel gears in the crankshaft side in a state separated from the crankshaft. SOLUTION: In this shaft driver, either end of a driveshaft 5 is axially slidably connected to a base end side extended part of a boss in a bevel gear 6, 16 via a spline, one end of the driveshaft can be inserted into a boss part across the spline on the base end side extended part of one bevel gear to make the driveshaft separable from the spline on the base end side extended part of the other bevel gear, a gear case 15 is attached to a housing 45 for supporting the crankshaft 3 so that the gear case 15 can be freely attached and detached, and a bevel gear 34 is supported by the gear case 15 so that the bevel gear 34 can freely rotates toward a crankshaft end via a bearing. A spline provided on an inner circumference of the boss in the bevel gear 34 is geared with a spline provided on an outer circumference of the crankshaft end, and the crankshaft is connected to the bevel gear 34 so that the crankshaft can slide in an axial direction.
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