Abstract: Provided is a pressing device for toroidal continuously variable transmission capable of reducing hysteresis that occurs between torque and pressing force. An intermediate sliding member 27 is provided in at least one location of a portion between an end surface on the outside in the radial direction of the retainer 13 of the roller 14 arranged on the outermost side in the radial direction and an inside surface of the pocket 25 on the outside in the radial direction, and a portion between an end surface on the outside in the radial direction of the retainer 13 of one roller 14 of adjoining rollers 14 in the radial direction and an end surface on the inside in the radial direction of the retainer 13 of another roller 14. As a result, the contact area of a sliding contact portion 32 is made smaller than in a case where an intermediate sliding member 27 is not provided.

Abstract: A toroidal-type stepless transmission includes: at least a pair of an input disc and an output disc; a power roller tiltably provided between the pair of the input disc and the output disc, the power roller being configured to transmit a driving force from the input disc to the output disc; and disc shrouds covering the input disc and the output disc, respectively. Each of the disc shrouds has an outer peripheral portion formed with an oil discharge groove configured to discharge an oil within each disc shroud to the outside, the oil discharge groove penetrating from an inner surface of the disc shroud to an outer surface of the disc shroud and extending in a circumferential direction of the disc shroud.

Abstract: A toroidal continuously variable transmission includes a first disc and a second disc disposed so that the first disc and the second disc are rotatable around a common rotational axis line, the first disc and the second disc facing each other; a power roller which is tiltably disposed between the first disc and the second disc; a pressing device of a loading cam type, the pressing device including a cam plate which is rotatable around the rotational axis line, and a roller unit including at least one roller sandwiched between a cam surface of the second disc and a cam surface of the cam plate; and a cam plate support supporting a back surface of the cam plate, the back surface being opposite to the cam surface of the cam plate, at a radial position conforming to a radial position of at least a portion of the roller unit.

Abstract: A toroidal continuously variable transmission includes a preload spring disposed between a rotary assembly including a first disc and a pressing device, and a driving force transmission shaft, and a thrust bearing disposed between a first member and the preload spring, the first member being one of the rotary assembly and the driving force transmission shaft. In a direction of an axis line, a gap is formed between a second member and the thrust bearing, the second member being the other of the rotary assembly and the driving force transmission shaft. A dimension of the gap in the direction of the axis line is less than a deformation amount of the preload spring in the direction of the axis line, at an elastic limit.

Abstract: The purpose of the invention is to achieve a structure that can be easily made smaller while maintaining transmission efficiency and durability. An inner disk 8b is supported around a sleeve 5a so as to be able to rotate relative to a rotational shalt 2b and the sleeve 5a by way of a pair of ball bearings 33 having a lace-to-face type contact angle. A pair of conical disc springs 36 are held between the inner face of an outer ring 35 of each of the pair of ball bearings 33 and an inner diameter side step face 30 on each of a pair of disk elements 7a, and a preload in the axial direction is applied to the pair of ball bearings 33 by elastically pressing the outer ring 35 to the outside.

Abstract: In a continuously variable transmission including: a first transmission unit including a first input disc and a first output disc disposed coaxially and a power roller tiltably interposed between these discs; and a second transmission unit disposed coaxially with the first transmission unit, including a second input disc and a second output disc disposed coaxially and a second power roller tiltably interposed between these discs, and disposed such that a back surface of the second input disc is opposed to a back surface of the first input disc, a tubular back surface cylinder wall is provided on each of the back surfaces of the first input disc and the second input disc so as to project therefrom.

Abstract: A toroidal continuously variable transmission including input and output discs disposed to face each other so that a rotational axis of the input disc and a rotational axis of the output disc conform, each of the discs having a concave contact surface; a power roller sandwiched between the contact surfaces of discs so that the power roller is tiltable, the power roller transmitting a rotational driving force of the input disc to the output disc with a transmission ratio corresponding to a tilt motion angle; and a pressing device which presses one of the discs toward the other. When viewed from a direction of a tilt motion axis lof the power roller, the contact surface of at least one of discs has a region with a curvature that is larger than a curvature of a tilt motion trajectory of a contact surface of the power roller.

Abstract: An electric power generating device for an aircraft, which is driven by an output of an aircraft engine, comprises an input shaft to which a driving force of the engine is transmitted; a transmission arranged with the input shaft; an electric power generator arranged with the input shaft and the transmission and driven by an output of the transmission; a driving force transmission mechanism disposed on a first end side of the input shaft in an axial direction thereof, the driving force transmission mechanism being configured to transmit the output from the transmission to the electric power generator; and a casing including a mounting section on the first end side of the input shaft in the axial direction, wherein the transmission includes an input section provided on a second end side of the input shaft in the axial direction, the input section being configured to receive as an input a rotational driving force from the input shaft, and an output section provided on the first end side of the input shaft in th

Abstract: A hydraulic circuit for controlling a continuously variable transmission includes: a lubrication line provided with a lubrication pump, and configured to supply oil from an oil tank to a lubrication target by using the lubrication pump; a high pressure line provided with a high pressure pump, branching from the lubrication line, and configured to supply, by using the high pressure pump, high-pressure oil to a hydraulic control section that controls oil pressure of the oil to be supplied to the continuously variable transmission; and a cooling return line branching from the high pressure line, and configured to return the oil to a downstream side of the lubrication pump in the lubrication line, a portion of the cooling return line forming a cooling path to cool a generator connected to the continuously variable transmission.

Abstract: A rubber composition includes, as essential components, an EDPM polymer, a carbon black, an electrical insulating amorphous or spindle-shaped filler, a softener, and a sulfur-based vulcanizing agent as essential components, and also includes, as an optical component, an electrical insulating plate-shaped filler. An obtained vulcanized product is satisfied with the following Equations (1) and (2): volume resistivity ?1.0×106 ?·cm??(1) (M30<100° C.>/M30<23° C.>?1)×100??15%??(2) where M30<23° C.> is a tensile stress at elongation of 30% as measured by a tensile test at 23° C., and M30<100° C.> is a tensile stress at elongation of 30% as measured by a tensile test at 100° C.

Abstract: 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 surfac

Abstract: In a continuously variable transmission including: a first transmission unit including a first input disc and a first output disc disposed coaxially and a power roller tiltably interposed between these discs; and a second transmission unit disposed coaxially with the first transmission unit, including a second input disc and a second output disc disposed coaxially and a second power roller tiltably interposed between these discs, and disposed such that a back surface of the second input disc is opposed to a back surface of the first input disc, a tubular back surface cylinder wall is provided on each of the back surfaces of the first input disc and the second input disc so as to project therefrom.

Abstract: In a toroidal continuously variable transmission including at least one transmission unit including: an input disc and an output disc disposed coaxially; and a power roller tiltably interposed between the input disc and the output disc and configured to transmit a driving force from the input disc to the output disc, an integrally rotating member disposed so as to be spaced apart in an axial direction from at least one disc of the input disc and the output disc of each transmission unit and configured to rotate together with the at least one disc, and an annular interposed member provided between the at least one disc and the integrally rotating member and configured to rotate together with the at least one disc, are provided, and the interposed member is formed with a balance adjustment portion capable of adjusting weight balance in a circumferential direction.

Abstract: In a continuously variable transmission including: a first transmission unit including a first input disc and a first output disc; and a second transmission unit disposed such that a back surface of a second input disc is opposed to a back surface of the first input disc, an input gear shroud covering an input gear disposed between the back surfaces of the first and second input discs, a first input disc side surface shroud integrally provided to a first input disc support supporting the first input disc on a housing of the continuously variable transmission, and a second input disc side surface shroud integrally provided to a second input disc support supporting the second input disc on the housing of the continuously variable transmission, are provided.

Abstract: A hydraulic circuit for controlling a continuously variable transmission includes: a lubrication line provided with a lubrication pump, and configured to supply oil from an oil tank to a lubrication target by using the lubrication pump; a high pressure line provided with a high pressure pump, branching from the lubrication line, and configured to supply, by using the high pressure pump, high-pressure oil to a hydraulic control section that controls oil pressure of the oil to be supplied to the continuously variable transmission; and a cooling return line branching from the high pressure line, and configured to return the oil to a downstream side of the lubrication pump in the lubrication line, a portion of the cooling return line forming a cooling path to cool a generator connected to the continuously variable transmission.

Abstract: A toroidal-type stepless transmission includes: at least a pair of an input disc and an output disc; a power roller tiltably provided between the pair of the input disc and the output disc, the power roller being configured to transmit a driving force from the input disc to the output disc; and disc shrouds covering the input disc and the output disc, respectively. Each of the disc shrouds has an outer peripheral portion formed with an oil discharge groove configured to discharge an oil within each disc shroud to the outside, the oil discharge groove penetrating from an inner surface of the disc shroud to an outer surface of the disc shroud and extending in a circumferential direction of the disc shroud.

Abstract: A planetary gear device includes: a sun gear having external teeth; a plurality of planet gears having external teeth and meshed with the sun gear; a ring gear having internal teeth and meshed with the planet gears; and a baffle unit disposed between the planet gears adjacent to each other and configured to collect lubricant oil into a collection chamber. The baffle unit includes: a discharge outlet to discharge a portion of the lubricant oil collected in the collection chamber in an axial direction; and a ring gear oil supply hole to discharge another portion of the lubricant oil in a radially outward direction and supplied to the ring gear, and a weir member separable from the baffle unit and configured to cover a portion of the discharge outlet to reserve the lubricant oil to be discharged through the ring gear oil supply hole.

Abstract: A planetary gear device includes: a sun gear having external teeth; a plurality of planet gears having external teeth and meshed with the sun gear; a ring gear having internal teeth and meshed with the planet gears; and a baffle unit disposed between the planet gears adjacent to each other and configured to collect lubricant oil into a collection chamber. The baffle unit includes: a discharge outlet to discharge a portion of the lubricant oil collected in the collection chamber in an axial direction; and a ring gear oil supply hole to discharge another portion of the lubricant oil in a radially outward direction and supplied to the ring gear, and a weir member separable from the baffle unit and configured to cover a portion of the discharge outlet to reserve the lubricant oil to be discharged through the ring gear oil supply hole.

Abstract: A gear train lubricating device configured to supply lubricating oil OL to a gear included in a gear train is provided. The gear train lubricating device includes: a shroud covering, among components constituting the gear, at least teeth of the gear; and a lubricating oil supply port through which the lubricating oil OL is supplied to a meshing position of the gear. The shroud has an outlet port formed therein, through which the supplied lubricating oil OL is discharged. The outlet port is formed in a portion of the shroud that is positioned radially outward from the gear, such that the outlet port is disposed at an angular position that is 90°±15° forward from the meshing position in a rotation direction R1 of the gear.

Abstract: To provide a polymer alloy formed of a non-polar rubber and a polar rubber, and a rubber product, which are improved in ozone resistance (weather resistance) while having oil resistance and can achieve high mechanical strength (in particular, tensile strength), and a production method thereof. A rubber product in which an organic peroxide or other cross-linking agent is used to cross-link a polymer alloy comprising: a modified rubber in which EPDM, NR, or another non-polar rubber having a non-conjugated double bond is modified with 2-methoxy-1-naphthonitrile oxide, 2,6-dimethoxybenzonitrile oxide, or another nitrile oxide of an aromatic nitrile oxide derivative; and nitrile rubber, acrylic rubber, or another polar rubber.