Provided is a toroidal continuously variable transmission that can achieve suitable oil feed both for lubrication at contact interfaces between a power roller and discs and for cooling of the power roller; and a drive mechanism-integrated electricity generation apparatus for an aircraft, the electricity generation apparatus including the toroidal continuously variable transmission. The toroidal continuously variable transmission includes at least one lubrication outlet that discharges an oil toward at least one contact interface between an input or output disc and the power roller; and at least one cooling outlet that discharges the oil toward the power roller. The cooling outlet and the lubrication outlet are arranged such that a distance between the cooling outlet and a point at which the oil discharged from the cooling outlet contacts the power roller is smaller than a distance between the lubrication outlet and the contact interface.

A cooling arrangement to cool the rollers of a toroidal CVT is described herein. The cooling arrangement includes nozzles so configured and sized as to project cooling fluid onto the edge and onto the opposite top and bottom surfaces of the roller.

A toroidal continuously variable transmission including a power roller; a support supporting the power roller rotatably; a thrust bearing receiving a load of the power roller in a direction along a rotating axis; and an oil passage supplying lubricating oil to the thrust bearing. A surface of the power roller opposing the support includes a first bearing grooved and the support opposing the power roller includes a second bearing groove. A virtual axis of a discharge port in the oil passage reaches a bearing groove that is one of the first bearing groove and the second bearing groove. Viewed from a direction perpendicular to the rotation axis, a portion of a retainer located at a radially inner side of a retaining hole of the retainer and a portion located at a radially inner side of the bearing groove are located at sides opposite to each other across the virtual axis.

A continuously variable transmission (CVT) provided with an integrated gerotor pump that also acts as a rotation blocker is described herein. In one illustrated embodiment, the gerotor pump is used to pump lubrication and cooling fluid through a radiator and into the hollow shaft of the CVT.

A toroidal continuously variable transmission comprises an input disc and an output disc which are disposed to face each other; a power roller which is tiltably disposed between the input disc and the output disc and transmits a rotational driving force of the input disc to the output disc in a transmission ratio corresponding to a tilt motion angle of the power roller; a trunnion including a base on which the power roller is rotatably mounted, and a pair of side walls provided on both sides of the power roller in an axial direction of a tilt motion shaft of the power roller in such a manner that the pair of side walls extend upward from the base and face a peripheral surface of the power roller, and a beam mounted on the pair of side walls, the beam extending in the axial direction of the tilt motion shaft, on a side opposite to the base when viewed from a position of the power roller, wherein the beam includes a pair of contact portions, each of the contact portions being configured to contact an end surface of a tip end side of each of the pair of side walls, and a pair of restricting portions configured to contact side surfaces of the pair of side walls, respectively, the side surfaces facing each other, to restrict a movement of the pair of side walls in a direction in which the pair of side walls approach each other.

Construction of a toroidal continuously-variable transmission is achieved that simplifies the manufacture of parts, management of parts and assembly work, is able to easily reduce costs, stabilizes speed change operations, and is processed easily. An outer ring 16b of a thrust rolling bearing is supported so as to be able to pivotally displace by engaging a concave section 24 that is provided on the outside surface of the outer ring 16b with a cylindrical convex surface 22 of a support beam 23a of a trunnion 7b. Displacement of the outer ring 16b in the axial direction of the support beam 23a is limited by engaging a concave groove 27 that is formed around the inside surface of the concave section 24 in the circumferential direction around the support beam 23a with a protrusion 28 that is formed around the outer-circumferential surface of the support beam 23a.

A toroidal continuously variable transmission. A power roller (40) of the transmission includes a power roller inner ring (50) sandwiched between both disks (1, 2), a power roller outer ring (60) provided in a trunnion (35) and rotatably supporting the power roller inner ring (50), and an inner ring hole (52) provided in the power roller inner ring (50) to extend in an axial direction of the power roller inner ring (50), in which an end surface hole (58) communicating with an inner ring hole (52) is provided in an inner end surface (54) of the power roller inner ring (50), and the end surface hole (58) is closed by a closing member (80) separate from the power roller inner ring (50).