Independent wheel drive device and vehicle

An independent wheel drive device comprising:

• a planetary gear device that has an input shaft arranged on one side and an output shaft disposed on another side and reduces a rotation speed of the input shaft to transmit a rotation to the output shaft;
• a wheel fitted in an outer circumference of an output shaft outer cylinder that includes a radial direction outermost circumference of the planetary gear device in a relative rotation preventing manner;
• a support frame fixedly supporting the input shaft side end in the axial direction of a bearing inner cylinder on the input shaft side of the planetary gear device and to support a vehicle body via a suspension system;
• a drive motor fixed to the support frame on the side opposite to the bearing inner cylinder of the support frame and to rotate the input shaft;
• a fixation ring interposed between the bearing inner cylinder and the support frame, the fixation ring fixing the bearing inner cylinder to the support frame, and abutting the drive motor forming a surface defining the position of the drive motor, wherein the rotation shaft of the drive motor is inserted in the fixation ring;
• and
• a seal member between the planetary carrier and the bearing inner cylinder on the side of the planetary gear device opposite to the support frame.

An independent wheel drive device comprising:

• a planetary gear device comprising:
• an internal gear,
• a planetary gear engaging with the internal gear,
• a sun gear positioned at the center of the internal gear and engaging with the planetary gear,
• a planetary carrier rotatably supporting the planetary gear in a state in which the planetary gear engages with the internal gear and the sun gear,
• a bearing inner cylinder containing the internal gear on an inner circumferential side of the bearing inner cylinder,
• a bearing coaxially fitting onto the outer circumference of the bearing inner cylinder,
• an output shaft outer cylinder coaxially fitting on the outer circumference of the bearing, and
• an output shaft end plate to transmit a rotation of the planetary carrier to the output shaft outer cylinder,
• wherein the sun gear is an input shaft and the output shaft outer cylinder is an output shaft;
• a wheel fitted onto the outer circumference of the output shaft outer cylinder so as to prevent relative rotation;
• a support frame fixedly supporting an axial direction end portion of the bearing inner cylinder on an axial direction side of the planetary gear device, and to support a vehicle body via a suspension system;
• a drive motor fixed to the support frame coaxially with the planetary gear device, the rotation shaft of the drive motor coupled to the sun gear, on the side of the support frame opposite to the bearing inner cylinder, and
• a seal member between the planetary carrier and the bearing inner cylinder on the side of the planetary gear device opposite to the support frame.