| 摘要 |
PURPOSE:To improve the stability in running on unleveled road by constituting the titled power transmission in such a way that a front wheel steered by a bar handle is driven through a differential gear provided with a viscous coupling, thereby automatically and rapidly switching the differential action to the differential lock according to the road condition. CONSTITUTION:In the power transmission where the power of an engine is inputted to the differential gear 40 in a gear case 20 through a propeller shaft 19 and transmitted to right and left wheels, a viscous coupling 50 is interposed between the differential case 28 of the differential gear 40 and a side gear 25 secured to a left wheel driving shaft 24. The viscous coupling 50 comprises a hub 51 connected with a spline to the periphery surface of a boss of the side gear 25, inner plate 52 supported by the hub 51, outer plate 53 supported by the inner periphery surface of the side of the differential case 28 and silicone oil with high viscosity filled between the plates 52, 53. Therefore, it is possible to automatically switch the differential action to differential lock in the differential gear 40 according to the road condition.
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