Nsk Corporation

Other

Satoshi Dairokuno

Taikou Nawamoto

Kenichi Sugiyama

Yukiyoshi Okazaki

Hiroyuki Itoh

Hirohisa Tanaka

Hiroyuki Hasegawa

Takashi Baba

Hideo Okano

Shinya Yoshimoto

A rod body () is formed of magnetostrictive material and includes one end portion () fixed, and a piston () is fixed to the other end portion () of the rod body (). The piston () is slidably disposed within a cylinder () in which there is formed a pump chamber (). A suction port () for sucking lubricating oil into the pump chamber () is formed in the cylinder (), while a suction valve () for preventing the lubricating oil from flowing out from the suction port () is disposed in the suction port (). In the cylinder (), there is disposed a nozzle () which communicates with the pump chamber () and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve (). There is disposed a coil () outside the rod body () and, to the coil (), there is connected a control device () for controlling the supply of a current to be supplied to the coil ().

Lubricating device

A high-speed fluidic device has a friction roller type speed-increasing mechanism, an electric motor, and a high-speed fluidic machine, wherein: the friction roller type speed-increasing mechanism includes a housing, a low-speed side member having an outer ring provided at one end portion thereof, a high-speed side shaft rotatably supported by the housing so as to be eccentric to the low-speed side member and the outer ring, at least one guide roller rotatably supported between the outer ring and the high-speed side shaft, and at least one movable roller rotatably supported between the outer ring and the high-speed side shaft; the electric motor drives the friction roller type speed-increasing mechanism; and the high-speed fluidic machine is connected to the high-speed side shaft so as to be driven by the high-speed side shaft.

High-speed fluidic device

A speed increasing gear used in a supercharger has a center roller connected to an output shaft, an outer wheel arranged eccentric to the center roller, and a plurality of intermediate rollers arranged within an annular space in which a width of the center roller with respect to a diametrical direction is uneven with respect to a circumferential direction of the center roller. The annular space is provided between the center roller and the outer wheel, and a pivot of at least one intermediate roller is movably arranged in a circumferential direction and a radial direction of the center roller.

Supercharger

A rod body ( ) is formed of magnetostrictive material and includes one end portion ( ) fixed, and a piston ( ) is fixed to the other end portion ( ) of the rod body ( ). The piston ( ) is slidably disposed within a cylinder ( ) in which there is formed a pump chamber ( ). A suction port ( ) for sucking lubricating oil into the pump chamber ( ) is formed in the cylinder ( ), while a suction valve ( ) for preventing the lubricating oil from flowing out from the suction port ( ) is disposed in the suction port ( ). In the cylinder ( ), there is disposed a nozzle ( ) which communicates with the pump chamber ( ) and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve ( ). There is disposed a coil ( ) outside the rod body ( ) and, to the coil ( ), there is connected a control device ( ) for controlling the supply of a current to be supplied to the coil ( ).

Spindle apparatus

A rod body is formed of magnetostrictive material and includes one end portion fixed, and a piston is fixed to the other end portion of the rod body . The piston is slidably disposed within a cylinder in which there is formed a pump chamber . A suction port for sucking lubricating oil into the pump chamber is formed in the cylinder , while a suction valve for preventing the lubricating oil from flowing out from the suction port is disposed in the suction port . In the cylinder , there is disposed a nozzle which communicates with the pump chamber and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve . There is disposed a coil outside the rod body and, to the coil , there is connected a control device for controlling the supply of a current to be supplied to the coil

A damper device for rotary motion is disclosed which is small in size, has an excellent durability and can optionally change damping characteristics from the outside. Rotation of an input shaft is transmitted to a cylinder tube through a rotation transmitting device of loading cam type, thereby rotating an output shaft engaged with the cylinder tube through splines. When the rotational speed and torque of power to be transmitted is fluctuated, the cylinder tube is displaced against the resiliency of a conical plate spring and the volume of a pressure chamber is reduced. A viscous liquid in the pressure chamber is then discharged to the outside through a throttle hole. A relative displacement between the input and output shafts absorbs vibrations in terms of energy corresponding to the product of the mass and changes in the angular speed of members which are displaced in synch with the input shaft.

Growing community of inventors

Kanagawa, Japan

Satoshi Dairokuno