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Details
Inventors: Yamaguchi, Kozo; Miyaishi, Yoshinori;
Assignee: Kabushikikaisha Equos Research (JP)
Primary Examiner: Camby; Richard M.
Assistant Examiner:
Attorney, Agent or Firm:

A structure for regulating the rotational direction of the output shaft of a hybrid vehicle is disclosed. The structure comprises a torque generating means for driving a drive wheel; a gear assembly unit including a first to a third element, the first element being adapted to receive a rotation from the torque generating means and the second element being adapted to transmit the rotation to an output shaft connected to the drive wheel; a case to house the gear assembly unit therein; and a rotation regulation means including a first coupler and a one-way clutch, the coupler and the one-way clutch being connected to the third element of the gear assembly unit, either of the coupler and the one-way clutch being disposed between the third element and the case, the other being disposed between the third element and a different one of the elements, so that the output shaft is only allowed to rotate in one direction when the coupler is coupled.

DETAILED DESCRIPTION One feature of the invention to attain the above object resides in a structure, which comprises a torque generating means for driving a drive wheel; a gear assembly unit including a first to a third element, the first element being adapted to receive a rotation from the torque generating means and the second element being adapted to transmit the rotation to an output shaft connected to the drive wheel; a case to house the gear assembly unit therein; and a rotation regulation means including a first coupler and a one-way clutch, the coupler and the one-way clutch being connected to the third element of the gear assembly unit, either of the coupler and the one-way clutch being disposed between the third element and the case, the other being disposed between the third element and a different one of the elements, so that the output shaft is only allowed to rotate in one direction when the coupler is coupled.
The gear assembly unit is preferably a planetary gear unit consisting of a sun gear, a carrier and a ring gear.
The first to third elements of the planetary gear unit are a carrier, a ring gear and a sun gear, respectively, the first coupler being disposed between the sun gear and the case, the one-way clutch being disposed between the sun gear and the carrier.
Otherwise, the first to third elements of the planetary gear unit are a ring gear, a carrier and a sun gear, respectively, the one-way clutch being disposed between the sun gear and the case, the first coupler being disposed between the sun gear and the carrier.
Incidentally, the first coupler is preferably disposed between the sun gear and the case.
Furthermore, the first to third elements of the planetary gear unit could be a sun gear, a carrier and a ring gear, respectively, the one-way clutch being disposed between the ring gear and the case, the first coupler being disposed between the ring gear and the carrier.
In this state, the second coupler is disposed between the ring gear and the case.
The first to third elements of the planetary gear unit could be a carrier, a sun gear and a ring gear, respectively, the one-way clutch being disposed between the ring gear and the carrier, and the first coupler being disposed between the ring gear and the case



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