| 摘要 |
PURPOSE:To prevent the generation of 4-wheel drive erroneously when 2-wheel drive is required by the use of a frywheel hub, by regulating the operation of a 2-4 wheel drive switching clutch to 4-wheel drive, when the hub is in free state. CONSTITUTION:Front and rear wheels 10 are equipped with a selection driving wheel 11 for the switching between drive and non-drive and a direct driving wheel 12 to which a driving force is directly transmitted. The output of a transmission mechanism 14 connected to an engine 13 is directly transmitted to the direct driving wheel 12, and an output is transmitted into the switching driving wheel 11 through a clutch 15 for selecting 2-4 wheel drive and a hub 16 operated in lock and free state. A detecting means 17 for detecting the free state of the hub 16 is installed, and a regulating means 18 for regulating the operation to the 4-wheel drive of a control means 19 for switching-controlling the clutch 15 when the detection signal of the detection means 17 indicates that the hub is in free state is installed. |
