TWO-WHEEL AND FOUR-WHEEL DRIVING CHANGE-OVER DEVICE FOR VEHICLE

摘要

The present invention aims at providing a two-wheel and four-wheel driving change-over device for a vehicle in which its configuration is simple, assembling can be carried out without changing the existing constitution as less as possible and occurrence of irregular sound is less. The present invention is comprised of a change-over unit 31 for performing intermittently a power transmission at a power transmission mechanism, wherein this change--over unit is constituted of a driving shaft 32 connected to a driving side; a driven shaft 33 fitted to this driving shaft with an annular clearance being left thereat; a plurality of engaging or disengaging members 34 installed at a clearance between the driving shaft and driven shaft, engaged with or disengaged from these opposing surfaces to perform a connecting operation and a disconnecting operation between the driving shaft and driven shaft; a change-over mechanism 35 for selectively positioning the engaging or disengaging members between a position where said driving shaft and driven shaft are connected and a position where said driving shaft and driven shaft are disconnected; and a casing 36 enclosing these components.