Abstract: A bearing replacement method for a rotating machine of the present invention includes the steps of: when at least one bearing of a rotating machine is to be replaced with a new one, mounting at an end portion of the rotating machine a plurality of bendable arms for removing a first bearing covering part, a power supply unit outer frame, and a slipring, respectively; removing with the arms the first bearing covering part, the power supply unit outer frame, and the slipring, respectively; and thereafter replacing the at least one bearing with a new one.

Abstract: A synchronous generator 1 including a rotor having a field winding placed in the slots thereof and a stator having an armature winding placed in the slots thereof, wherein the value of the number of slots per two poles in stator minus the number of slots per two poles in rotor is equal to or greater than +9, or equal to or smaller than ?9.

Abstract: An electric rotation machine for windmill power generation equipped with a stator slot structure having distributed windings and a rotor pole structure having permanent magnets, wherein the number of slots per pole per phase (Nspp) is undividable by 3 times P (where P is the number of poles), and pole width rate Pw obtained by dividing pole piece width Tp by pole pitch Tr at the outermost diameters of the adjoining poles of the rotor is satisfied any of Pw?0.6, 0.67?Pw?0.71, and 0.78?Pw. The distortion factors of induced voltages in a permanent magnet type electrical rotation machine, particularly for windmill power generation, can be reduced.

Abstract: A synchronous generator 1 including a rotor having a field winding placed in the slots thereof and a stator having an armature winding placed in the slots thereof, wherein the value of the number of slots per two poles in stator minus the number of slots per two poles in rotor is equal to or greater than +9, or equal to or smaller than ?9.

Abstract: A permanent magnet type electric rotating machine comprises a stator having a distributed winding and a permanent magnet rotor, wherein the permanent magnet rotor is provided with a wind passage in an axial direction thereof.

Abstract: An electric rotation machine for windmill power generation equipped with a stator slot structure having distributed windings and a rotor pole structure having permanent magnets, wherein the number of slots per pole per phase (Nspp) is undividable by 3 times P (where P is the number of poles), and pole width rate Pw obtained by dividing pole piece width Tp by pole pitch Tr at the outermost diameters of the adjoining poles of the rotor is satisfied any of Pw?0.6, 0.67?Pw?0.71, and 0.78?Pw. The distortion factors of induced voltages in a permanent magnet type electrical rotation machine, particularly for windmill power generation, can be reduced.

Abstract: A guide passage is provided between a driving-side rotator and a driven-side rotator to supply lubricating fluid into an interior of the first rotator. A planetary gear is received in the driving-side rotator and is meshed with a gear portion of the driving-side rotator to make a planetary motion and thereby to change a relative phase between the driving-side rotator and the driven-side rotator. The guide passage guides the lubricating fluid toward a location on a radially outer side of the gear portion and the planetary gear and has a contaminant capturing space to accumulate contaminants contained in the lubricating fluid.

Abstract: An electric rotation machine for windmill power generation equipped with a stator slot structure having distributed windings and a rotor pole structure having permanent magnets, wherein the number of slots per pole per phase (Nspp) is undividable by 3 times P (where P is the number of poles), and pole width rate Pw obtained by dividing pole piece width Tp by pole pitch Tr at the outermost diameters of the adjoining poles of the rotor is satisfied any of Pw?0.6, 0.67?Pw?0.71, and 0.78?Pw. The distortion factors of induced voltages in a permanent magnet type electrical rotation machine, particularly for windmill power generation, can be reduced.

Abstract: A valve timing controller includes a first rotating element and a second rotating element. The controller further includes a link mechanism part including arm members for coupling the first and second rotating elements. The controller also includes a gear part including a first gear and a second gear to convert outside rotating torque to control torque for motion of the arm members due to coupling of and relative motion of the first and second gears. Additionally, the controller includes a separation member disposed between the gear part and the link mechanism part for separating a thrust gap of the gear part and a thrust gap of the link mechanism part.

Abstract: A valve timing adjusting device includes: a first rotary body which rotates in synchronization with one of a crankshaft and a camshaft and into which lubricating fluid is supplied; a second rotary body which rotates in synchronization with the other; a torque producing unit for producing control torque; and a phase change unit including a planetary gear mechanism in which a planetary gear is engaged with a sun gear in such a way as to be able to perform a planetary motion. The phase change unit changes a relative rotational phase between the first rotary body and the second rotary body by utilizing the control torque transmitted from the torque producing unit to the planetary gear mechanism and has a space at an interface where the first rotary body is brought into sliding contact with the planetary gear.

Abstract: A valve timing controller includes a first rotating element and a second rotating element. The controller further includes a link mechanism part including arm members for coupling the first and second rotating elements. The controller also includes a gear part including a first gear and a second gear to convert outside rotating torque to control torque for motion of the arm members due to coupling of and relative motion of the first and second gears. Additionally, the controller includes a separation member disposed between the gear part and the link mechanism part for separating a thrust gap of the gear part and a thrust gap of the link mechanism part.

Abstract: A valve timing adjusting device includes: a first rotary body which rotates in synchronization with one of a crankshaft and a camshaft and into which lubricating fluid is supplied; a second rotary body which rotates in synchronization with the other; a torque producing unit for producing control torque; and a phase change unit including a planetary gear mechanism in which a planetary gear is engaged with a sun gear in such a way as to be able to perform a planetary motion. The phase change unit changes a relative rotational phase between the first rotary body and the second rotary body by utilizing the control torque transmitted from the torque producing unit to the planetary gear mechanism and has a space at an interface where the first rotary body is brought into sliding contact with the planetary gear.

Abstract: An electric rotation machine for windmill power generation equipped with a stator slot structure having distributed windings and a rotor pole structure having permanent magnets, wherein the number of slots per pole per phase (Nspp) is undividable by 3 times P (where P is the number of poles), and pole width rate Pw obtained by dividing pole piece width Tp by pole pitch Tr at the outermost diameters of the adjoining poles of the rotor is satisfied any of Pw?0.6, 0.67?Pw?0.71, and 0.78?Pw. The distortion factors of induced voltages in a permanent magnet type electrical rotation machine, particularly for windmill power generation, can be reduced.

Abstract: A permanent magnet type electric rotating machine comprises a stator having a distributed winding and a permanent magnet rotor, wherein the permanent magnet rotor is provided with a wind passage in an axial direction thereof.

Abstract: In order to provide a rotating electric machine which reduces vibration, noise and temperature rise and eases assembling work thereof through an improvement of a frame structure and a securing method between a stator iron core and the frame. In a rotating electric machine comprising a stator iron core 6 having a stator winding, a frame 1 having intermediate plates 2 for securing the stator iron core 6 to the frame 1, a rotor iron core 5 having a rotor winding, the intermediate plates (brackets) 2 which rotatably support the rotor at both sides in the frame axial direction under the condition of accommodating the stator iron core 6 and the rotor iron core 5 in the frame 1, cooling fans 4 for ventilation through rotation together with a rotor shaft 3, and a shaft portion extending from the brackets for directly coupling to a load, wherein, the securing between the frame 1 and the stator iron core 6 is performed by a welding structure at a welding portion 9.

Abstract: In order to provide a rotating electric machine which reduces vibration, noise and temperature rise and eases assembling work thereof through an improvement of a frame structure and a securing method between a stator iron core and the frame. In a rotating electric machine comprising a stator iron core 6 having a stator winding, a frame 1 having intermediate plates 2 for securing the stator iron core 6 to the frame 1, a rotor iron core 5 having a rotor winding, the intermediate plates (brackets) 2 which rotatably support the rotor at both sides in the frame axial direction under the condition of accommodating the stator iron core 6 and the rotor iron core 5 in the frame 1, cooling fans 4 for ventilation through rotation together with a rotor shaft 3, and a shaft portion extending from the brackets for directly coupling to a load, wherein, the securing between the frame 1 and the stator iron core 6 is performed by a welding structure at a welding portion 9.

Abstract: A torsion coil spring is installed in a circle groove of a chain sprocket. Both ends of the coil spring are bent in a radially outward direction. The first bent end is fit to a fixed pin protruding from the chain sprocket, and the second bent end is fit to a pin protruding from a vane rotor. The coil spring urges the vane rotor such that the vane rotor advances with respect to the chain sprocket. That is, the coil spring urges the vane rotor such that a camshaft advances with respect to an engine crankshaft.

Abstract: A torsion coil spring is installed in a circle groove 61 of a chain sprocket. Both ends of the coil spring are radially outwardly bent. The first bent end is fit to a fixed pin protruding from the chain sprocket, and the second bent end is fit to a pin protruding from a vane rotor. The coil spring urges the vane rotor such that the vane rotor advances with respect to the chain sprocket. That is, the coil spring urges the vane rotor such that a camshaft advances with respect to an engine crankshaft.

Abstract: For enhancing engine startability and reducing discharge of unburned fuel from an engine, a camshaft is rotated toward the most advance side when an exhaust valve is opened. In one aspect, the camshaft is urged toward the advance side with respect to a timing pulley by the urging force of a spring. A stopper is received displaceably in a diametrical direction in a receiving hole and is fitted in a stopper hole when the camshaft is at the most advance position. In another aspect, at engine starting where operating fluid is not supplied to a release fluid chamber, a clutch piston is coupled to a front plate by a spring, and gear teeth of the front plate and the clutch piston are engaged with each other.

Abstract: A vibration isolator designed to improve mounting facility is disposed between a vibration source and a base on which the vibration source is supported. The vibration isolator has an elastic member provided between the vibration source and the base to elastically support the vibration source, a main chamber in which a fluid is enclosed and the volume of which is changed according to a deformation of the elastic member, a sub chamber defined by an elastic membrane and communicating with the main chamber through an orifice, a moving member provided in a fluid chamber formed by the main and sub chambers, and an actuator for driving the moving member. The actuator is fixed to the elastic membrane in a fluid sealing manner, and drives the moving member from the outside of the fluid chamber formed by the main and sub chambers through attachment members connected to the moving member.