Toyota Jidosha Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Means Industries, Inc.

Hiroyuki Ogawa

Akira Murakami

Daisuke Tomomatsu

Takahiro Shiina

Yuki Aratsu

Hiroyuki Shibata

Yuki Kurosaki

Mitsuaki Tomita

Akira Hibino

Hiroyuki Shioiri

Shotaro Kato

Kenji Itagaki

Koichi Kato

Yoshiharu Harada

Joshua D Hand

Takao Watanabe

Eiji Tsuchiya

Shu Asami

Tatsuya Miyano

Kenji Arai

Tomoyuki Toyama

Atsushi Yuki

A selectable one-way clutch includes: a pocket plate including pockets provided along a circumferential direction on one surface; a notch plate that is rotatable with respect to the pocket plate, the notch plate including notches provided along a circumferential direction on a surface facing the one surface; struts that are plate-shaped and housed in the respective pockets; and a selector plate disposed between the pocket plate and the notch plate, and configured to switch, by rotating coaxially with the pocket plate, between: a state in which the struts have risen toward the notch plate; and a state in which the struts are housed in the respective pockets. The notch plate includes flat portions between the notches that are adjacent in the circumferential direction, and each flat portion includes a first recess at a position where the corresponding strut having risen toward the notch plate is brought into contact.

Selectable one-way clutch

A control device for a selectable one-way clutch includes a pocket plate; a notch plate rotating relative to the pocket plate; a selector plate between the pocket plate and the notch plate rotating coaxially with the notch plate to change between a state allowing engagement members to pass through respective openings and to stand up from a side close to the pocket plate toward a side close to the notch plate and a state allowing the housing recesses to house the engagement members; and a motion detection unit detecting a motion of the selector plate. Further, when an unintended motion of the selector plate is detected, the pocket plate and the notch plate to rotate differentially at a rotation speed equal to or less than a predetermined absolute value, and the selectable one-way clutch to fall into a state of ratchet or into a state of overrun.

Control device for selectable one-way clutch

An engaging device includes: inner and outer rings as two rotating elements; and an engaging piece, between the rings, projecting in a radial direction. Further, the engaging piece is attached to one of the rotating elements and another rotating element serves as an engaged member and movable in an axial direction, the engaging piece includes a first inclined portion in a tip end of a surface facing the another rotating element, the another rotating element includes a tapered portion, in a portion coming into contact with the first inclined portion, and in accordance with a position of the another rotating element, a state is switched between a one-way clutch state and a free state.

Engaging device

A stepless transmission includes: a transmission shaft; first to fourth power transmission elements; a plurality of rolling bodies clamped by the first and second power transmission elements disposed in confrontation with each other, and tiltably held by the fourth power transmission element; an axial force generator configured to generate axial force in an axial direction for pressing at least one of the first and second power transmission elements against the rolling bodies; and a transmission device configured to change a gear ratio between an input and output by tilting the rolling bodies. Young's moduli of a contact section and an additional contact section, in contact with the rolling body, of one of the first and second power transmission elements are larger than those of other one of the first and second power transmission elements.

Stepless transmission

A continuously variable transmission includes: first to third power transmission components; a rolling component; a support shaft for the rolling component; a first guide member that includes a first guide portion for guiding a first protrusion portion of the inserted support shaft; a gear shift member that includes a gear change portion; a first actuator which tilts each rolling component by moving each second protrusion portion along the gear change portion with rotation of the gear shift member at a time an input-output gear ratio is changed; a second guide member that includes a second guide portion for guiding a second protrusion portion of the inserted support shaft; and a second actuator which prohibits rotation of the second guide member during reverse rotation of the first and second power transmission components and allows rotation of the second guide member during normal rotation of the first and second power transmission components.

Continuously variable transmission

A continuously variable transmission includes: a transmission shaft; first to fourth power transmission elements that have a first rotation center axis coaxial with the transmission shaft; a plurality of rolling members that has a second rotation center axis; a transmission device configured to change a gear ratio between an input side and an output side by tilting each of the rolling members; a rotary shaft that is coupled with one of the first and second power transmission elements, and is provided with a cylindrical section; an annular member that is coupled with the rotary shaft, and configured to form an annular oil reservoir formed of lubricating oil; and a scraping up section configured to scrape up the lubricating oil by rotating in the circumferential direction.

A continuously variable transmission includes a shaft, first and second rotary members, a sun roller, a carrier, planetary balls, a gear shifter for changing a gear ratio between input and output by tilting each of the planetary balls, a casing for accommodating these elements, and a lubricating oil supply opening for supplying lubricating oil into the casing. The casing includes a discharge opening for discharging the lubricating oil to the outside of the casing. The discharge opening is provided in a wall of the casing in an axial direction of the shaft and radially outside the lubricating oil supply opening. As seen in the axial direction, the discharge opening is formed either at a position that crosses a contact section between the planetary ball and each of the first and second rotary members or an auxiliary contact section, or radially outside the contact section or the auxiliary contact section.

A power transmission device includes first and second rings arranged opposite each other, having a common rotation center axis, and rotatable relative to each other; a plurality of planetary balls having rotation center axes parallel to the rotation center axis, and radially arranged between the first and second rings and around the rotation center axis; a transmission control unit configured to change a rotation ratio between the first and second rings by changing the respective contact points of the first and second rings and each of the planetary balls through tilting motion of each of the planetary balls; and a rotation restricting unit disposed between the planetary balls adjacent to each other.

Power transmission device

Provided with first and second rotational members, a sun roller, a plurality of planetary balls sandwiched between the first and second rotational members, a support shaft of each of the planetary balls, a shaft, a carrier, an iris plate and a worm gear for tilting each of the planetary balls, and an input shaft and an output shaft individually fixed to the first and second rotational members, respectively, in which a movable amount of the sun roller relative to the carrier in an axis line direction is set to be smaller than the movable amount of the second rotational member relative to the carrier in the axis line direction when the input shaft is arranged so as to be relatively rotatable on an outer peripheral surface of the output shaft.

A continuously variable transmission includes plural planetary balls, a carrier, a sun roller, an input shaft, an output shaft, and thrust bearings sandwiched between respective holding surfaces of the input shaft and the output shaft, wherein the holding surface at a time of rest is formed such that a space between the holding surface and a race on one side of the thrust bearing becomes wider on an outside in a radial direction than on an inside in the radial direction, and the holding surface at the time of rest is formed such that a space between the holding surface and a race on the other side of the thrust bearing becomes wider on the outside in the radial direction than on the inside in the radial direction.

During an inertial energy storage operation, electric power conversion at an inverter is controlled such that a direct current electric power from an electric power storage device is converted into an alternating current by the inverter so as to be supplied to stator windings, such that torque in the direction of engine rotation is applied to an output side rotor from a stator to rotatively drive the output side rotor in a state where power transmission from the output side rotor to a drive axle is stopped. During a cranking operation after the inertial energy storage operation, the electric power conversion at an inverter is controlled to permit application of the alternating current to rotor windings, such that a torque in the direction of engine rotation is applied to an input side rotor from the output side rotor, thereby rotatively driving an input side rotor to crank the engine.

In a drive control device of a hybrid vehicle including a power dividing mechanism which has a sun roller, a carrier, and a first disc with which a rotating shaft of a first motor/generator, an output shaft of an engine, and a rotating shaft of a second motor/generator which also functions as an output shaft directed toward drive wheel sides are coupled, respectively and by which differential rotating operations between the sun roller, the carrier, and the first disc are controlled using an alignment chart on which rotation speeds of the sun roller, the carrier, and the first disc are disposed in the sequence of the sun roller, the carrier, the first disc and shown by straight lines.

Drive control device of hybrid vehicle

A continuously variable transmission includes a continuously variable transmission mechanism that includes an input disk, an output disk, and planetary balls sandwiched between them and that steplessly changes a transmission ratio between the input disk and the output disk by tilting the planetary balls, wherein cooling performance of a cooling device for the continuously variable transmission mechanism is enhanced as the transmission ratio becomes larger than 1 or smaller than 1.

A continuously variable transmission having a continuously variable transmission mechanism including an input member, an output member, and a rotary member sandwiched therebetween, transmitting torque between the input member and the output member by means of frictional forces generated by pushing the input member and the output member against the rotary member, and continuously varying a transmission gear ratio between the input member and the output member, an axial force generating portion which rotates in one direction to generate a first axial force for pushing one of the input member and the output member toward the other and rotates in the other direction to generate a second axial force opposite to the first force, and an opposite axial force transmitting portion for transmitting the second force to the other of the input member and the output member when the axial force generating portion generates the second force.

In an engine start control device of a hybrid vehicle including a power dividing mechanism which has a sun roller, a carrier, and a first disc with which a rotating shaft of a first motor/generator, an output shaft of an engine, and an output shaft of a second motor/generator are coupled, respectively and by which differential rotating operations between the sun roller, the carrier, and the first disc are controlled using an alignment chart on which rotation speeds of the sun roller, the carrier, and the first disc are disposed in the sequence of the sun roller, the carrier, the first disc and shown by straight lines.

Growing community of inventors

Susono, Japan

Hiroyuki Ogawa