Transfer device of vehicle

A transfer device of a vehicle, comprising:

• a main-drive-wheel output shaft coupled to an output shaft of a transmission and extending to one side in a front-and-rear direction of the vehicle;
• an auxiliary-drive-wheel output shaft disposed in parallel with the main-drive-wheel output shaft;
• and
• a powertrain mechanism configured to transmit a driving force extracted from the main-drive-wheel output shaft to the auxiliary-drive-wheel output shaft,
• wherein the auxiliary-drive-wheel output shaft is connected to a propeller shaft extending to the other side in the vehicle front-and-rear direction and having a universal joint at an end part thereof on the auxiliary-drive-wheel output shaft side,
• wherein an end part of the auxiliary-drive-wheel output shaft on the propeller shaft side is formed in a hollow shape and includes a fitting part configured to be spline-engaged with a joint part provided to a component member of the universal joint of the propeller shaft,
• wherein the spline-engagement between the fitting part of the auxiliary-drive-wheel output shaft and the joint part of the propeller shaft is a non-press fitting,
• wherein the joint part is provided, at an end part thereof on the one side, with a centering part extending to the one side and having an outer diameter smaller than an outer diameter of the joint part,
• wherein the centering part is provided, at an end part thereof on the one side, with a bolt hole extending to the other side,
• wherein the auxiliary-drive-wheel output shaft is provided, on the one side of the fitting part, with a flange part extending to radially inward of the auxiliary-drive-wheel output shaft and having a centering hole corresponding to the centering part,
• wherein a spacer is disposed on the one side of the flange part,
• wherein a bolt member is disposed on the one side of the spacer to be inserted into the spacer from the one side toward the bolt hole of the centering part and attached to the bolt hole,
• wherein the centering part is inserted into the centering hole so that the joint part is centered on the auxiliary-drive-wheel output shaft, and
• wherein the flange part is sandwiched between the spacer and the joint part, and the bolt member is attached to the bolt hole so that the propeller shaft is assembled to the auxiliary-drive-wheel output shaft.