Abstract: A rotor of a rotary electric machine includes a magnet that is a ring member arranged coaxially with a rotor core and assembled to an axial end part of the rotor core. The magnet is used for sensing a rotational angle of the rotor. The rotor core includes only one pair of core-side positioning portions which are arranged to be point-symmetric about a rotational axis. The magnet includes only one pair of magnet-side positioning portions which are arranged to be point-symmetric about the rotational axis. The magnet-side positioning portions are engaged with the core-side positioning portions, respectively, to position the magnet relative to the rotor core in a first direction, a second direction and a circumferential direction, and the magnet-side positioning portions are used as both a magnetization reference and an assembly reference.

Abstract: A rotor of a rotary electric machine includes a magnet that is a ring member arranged coaxially with a rotor core and assembled to an axial end part of the rotor core. The magnet is used for sensing a rotational angle of the rotor. The rotor core includes only one pair of core-side positioning portions which are arranged to be point-symmetric about a rotational axis. The magnet includes only one pair of magnet-side positioning portions which are arranged to be point-symmetric about the rotational axis. The magnet-side positioning portions are engaged with the core-side positioning portions, respectively, to position the magnet relative to the rotor core in a first direction, a second direction and a circumferential direction, and the magnet-side positioning portions are used as both a magnetization reference and an assembly reference.

Abstract: An oil pressure regulation valve includes a spool supported in a sleeve to be slidable in an axial direction, a solenoid actuator disposed to generate an electromagnetic force for driving the spool to one axial end side, and a biasing portion configured to bias the spool to the other axial end side. The sleeve is provided with an input chamber to which an oil pressure input port is open, and an output chamber to which an oil pressure output port is open. The spool includes a land portion that is exposed to the output chamber to be biased to the one axial end side by using oil pressure in the output chamber, and the spool is movable to the one axial end side when the land portion is biased to the one axial end side by using the oil pressure in the output chamber.

Abstract: An oil pressure regulation valve includes a spool supported in a sleeve to be slidable in an axial direction, a solenoid actuator disposed to generate an electromagnetic force for driving the spool to one axial end side, and a biasing portion configured to bias the spool to the other axial end side. The sleeve is provided with an input chamber to which an oil pressure input port is open, and an output chamber to which an oil pressure output port is open. The spool includes a land portion that is exposed to the output chamber to be biased to the one axial end side by using oil pressure in the output chamber, and the spool is movable to the one axial end side when the land portion is biased to the one axial end side by using the oil pressure in the output chamber.

Abstract: A linear solenoid includes a biasing portion to bias a ring core onto a bottom of a cup-shape yoke in an axis direction. The ring core has an attachment portion to which the biasing portion is attached, and the attachment portion is located only on an outer circumference side of the ring core. The biasing portion shortens a dimension of the ring core in the axis direction only on the outer circumference side, and the biasing portion is located between the attachment portion of the ring core and a coil accommodation resin to accommodate a coil in the axis direction.

Abstract: A solenoid spool valve includes a sleeve, a spool, and a feed-back chamber. The sleeve has an input port and an output port. The input port receives fluid, and the output port is communicated with a control target chamber. The spool is received within the sleeve displaceably along a longitudinal axis of the sleeve to control a communication state of the input port and the output port. The feed-back chamber is communicated with the output port. The feed-back chamber applies pressure of output fluid to the spool in a valve closing direction for closing the solenoid spool valve. The sleeve has a feed-back passage opening at a passage between the output port and the control target chamber. The feed-back passage provides communication between the output port and the feed-back chamber.

Abstract: A solenoid spool valve includes a sleeve and a spool. The spool is received within the sleeve displaceably along a longitudinal axis to control a communication state of an input port, an output port, and a drain port of the sleeve. The sleeve includes an inner sleeve and an outer sleeve. The outer sleeve is fluid-tightly fitted with an outer peripheral surface of the inner sleeve. A feed-back chamber is defined at one axial end of the spool along the longitudinal axis, the feed-back chamber being communicated with the output port such that pressure of fluid in the output port is applied, as feed-back pressure, to the one axial end of the spool.

Abstract: A linear solenoid includes a biasing portion to bias a ring core onto a bottom of a cup-shape yoke in an axis direction. The ring core has an attachment portion to which the biasing portion is attached, and the attachment portion is located only on an outer circumference side of the ring core. The biasing portion shortens a dimension of the ring core in the axis direction only on the outer circumference side, and the biasing portion is located between the attachment portion of the ring core and a coil accommodation resin to accommodate a coil in the axis direction.