| 摘要 |
A transfer includes a main body, a subassembly and a connecting-disconnecting mechanism. The main body includes a ring gear, a case and a third bearing. The subassembly includes an input shaft, a sleeve, a moving mechanism, a first bearing and a second bearing. The connecting-disconnecting mechanism selectively connects/disconnects the ring gear to/from the input shaft. The input shaft is arranged concentric with the ring gear and inside the ring gear. The input shaft includes a first end portion and a second end portion. The input shaft is supported at the first end portion and the second end portion by the case in a manner rotatable around the rotational axis via the first bearing and the second bearing. |
| 主权项 |
1. A transfer of a vehicle, the vehicle including a driving source, a power transmitting member, main driving wheels and auxiliary driving wheels, the transfer outputting some of the driving force to be transmitted from a driving source to the main driving wheels to the auxiliary driving wheels via the power transmitting member when the vehicle is switched from a two-wheel-drive state to a four-wheel-drive state, the transfer comprising:
a main body including a ring gear, a case and a third bearing,
the ring gear including a cylindrical portion and ring gear-side engaging-disengaging teeth, the ring gear-side engaging-disengaging teeth being integrally provided on an inner diameter side of the cylindrical portion, andthe case supporting the ring gear via the third bearing in a manner enabling the ring gear to rotate around a rotational axis; a subassembly including an input shaft, a sleeve, a moving mechanism, a first bearing and a second bearing
the input shaft, the sleeve, and the moving mechanism being integrally assembled,the input shaft being arranged concentric with the ring gear and inside the ring gear, the input shaft being supported at a first end portion of the input shaft and a second end portion of the input shaft by the case in a manner rotatable around the rotational axis via the first bearing and the second bearing; and a connecting-disconnecting mechanism configured to selectively connect and disconnect the ring gear to and from the input shaft, the connecting-disconnecting mechanism including the sleeve,
the sleeve being configured to move in the rotational axis direction on the input shaft, the sleeve being configured not to rotate relative to the input shaft, the sleeve including sleeve-side engaging-disengaging teeth on an outer diameter side of the sleeve, the connecting-disconnecting mechanism being configured to selectively output some of the driving force to the auxiliary driving wheels depending on whether the ring gear-side engaging-disengaging teeth and the sleeve-side engaging-disengaging teeth are in mesh or not in mesh, the case having an opening, in an end portion in the rotational axis direction of the case, for inserting the subassembly into the main body and assembling the subassembly to the main body, an outer diameter dimension of components of the subassembly or an outer diameter dimension of a part of the components of the subassembly being less than an inner diameter dimension of the ring gear-side engaging-disengaging teeth, the components or the part of the components pass through the ring gear-side engaging-disengaging teeth in the rotational axis direction when the subassembly is inserted into and assembled to the main body. |
