Abstract: An operation terminal is held by and detachable from a holder on an MFP. The operation terminal includes a touch panel with a display region for an operation screen for the MFP. The touch panel senses an external object touching the display region. A vibrator unit applies vibration to the display region. In response to the touch panel sensing the object, a response controller unit instructs the vibrator unit to apply to the display region vibration responsive to the object. The response controller unit checks whether the operation terminal is held by or detached from the holder at the time the touch panel senses the object, and when the operation terminal is held by the holder, sets the responsive vibration to a level lower than when the operation terminal is detached from the holder.

Abstract: An electric-power control device including a substrate of an annular shape in which a through hole is formed and a connector is arranged in a peripheral part, the electric-power control device driving an electric motor. On the substrate, a power semiconductor module is mounted on a first region on one side relative to a straight line connecting the center of the through hole to the center of the connector, and a microcomputer is mounted on a second region on the other side. Furthermore, a first ground pattern part that is formed extending from the power semiconductor module toward the connector in the first region and a second ground pattern part that is formed extending from the microcomputer toward the connector in the second region are provided on the substrate.

Abstract: The stator includes a stator core having a first tooth and a second tooth adjacent to each other, a coil having a first winding portion wound around the first tooth and a second winding portion wound around the second tooth, a resin chip disposed in in a gap between the first winding portion and the second winding portion, and a molding resin covering the stator core, the coil, and the resin chip.

Abstract: A consequent-pole-type rotor including a rotor core and a permanent magnet 1 disposed inside the rotor core, includes a first rotor core having a first region into which the permanent magnet is inserted and a second rotor core that has a second region communicating with the first region and is stacked on the first rotor core, wherein a second width is larger than a first width, where the first width is a width of the first region in a radial direction of the rotor core and the second width is a width of the second region in the radial direction of the rotor core.

Abstract: A permanent-magnet electric motor includes: a rotor; and a rotational-position detection sensor configured to detect a rotational position of the rotor. The rotor includes: a rotating shaft; an annular ferrite magnet disposed on an outer circumferential surface of the rotating shaft; and a rare-earth magnet disposed on an outer circumferential surface of the ferrite magnet, and a length from a center of the ferrite magnet in an axial direction of the ferrite magnet to an end face of the ferrite magnet on a side of the rotational-position detection sensor in the axial direction of the ferrite magnet is longer than a length from a center of the rare-earth magnet in an axial direction of the rare-earth magnet to an end face of the rare-earth magnet on a side of the rotational-position detection sensor in the axial direction of the rare-earth magnet.

Abstract: A stator to which a power supply lead wire for supplying electric power is connected, includes a stator core, a winding wound around the stator core, a winding terminal connected to the winding, a circuit board connecting the power supply lead wire and the winding terminal to each other and having a surface facing the stator core, a power supply terminal provided on the surface and connected to the power supply lead wire, and a wiring pattern provided on the surface and connecting the winding terminal and the power supply terminal to each other.

Abstract: In a pump, a resin magnet included in a rotor portion has a plurality of groove portions in an outer peripheral portion thereof, the groove portions extending in an axial direction.

Abstract: An image forming apparatus including: a fixer that fixes a toner image formed on a recording medium by pressing and heating the recording medium nipped in a nip portion formed by causing two rotating bodies to pressedly abut on each other, and conveying the recording medium by rotating the rotating bodies; a motor that drives the rotating bodies by transmitting a torque to at least one of the rotating bodies; a torque detector that detects the torque transmitted to the rotating body by the motor; a temperature detector that detects temperature of the rotating body; a speed detector that detects a conveyance speed for conveying the recording medium by the fixer; and a controller that corrects the detected torque based on at least any one of the detected temperature and the detected conveyance speed and predicts a life of the fixer based on the corrected torque.

Abstract: An image forming device includes: a fixing device that includes a fixing rotary member and thermally fixes a toner image onto a recording sheet by the fixing rotary member; a temperature sensor that senses a temperature of the fixing rotary member as a fixing temperature; a driving unit that drives the fixing rotary member to rotate; a torque sensor that senses a torque value of the driving unit in a torque sensing period in which at least one of the fixing temperature and a driving speed falls within a predetermined range, the driving speed being a speed of the driving unit for driving the fixing rotary member to rotate; and a prediction unit that predicts an operating life of the fixing device based on the sensed torque value.

Abstract: An electric motor includes a stator, a rotor provided to be rotatable with respect to the stator, and a driving circuit board including a power IC applying a driving voltage to the stator, a Hall IC detecting a rotation position of the rotor, and a control IC adjusting a phase of the driving voltage in accordance with a magnetic-pole-position signal from the Hall IC and rotation speed information calculated on the basis of the magnetic-pole-position signal. The Hall IC is provided at a position at which an advance angle is larger than zero when a rotation speed of the rotor is zero.

Abstract: An electric-power control device including a substrate of an annular shape in which a through hole is formed and a connector is arranged in a peripheral part, the electric-power control device driving an electric motor. On the substrate, a power semiconductor module is mounted on a first region on one side relative to a straight line connecting the center of the through hole to the center of the connector, and a microcomputer is mounted on a second region on the other side. Furthermore, a first ground pattern part that is formed extending from the power semiconductor module toward the connector in the first region and a second ground pattern part that is formed extending from the microcomputer toward the connecter in the second region are provided on the substrate.

Abstract: A consequent-pole-type rotor includes a first rotor core having a first insertion hole, and a second rotor core having a second insertion hole, the second rotor core being stacked on the first rotor core such that the first insertion hole and the second insertion hole together form a space accommodating a permanent magnet. The first insertion hole has an opening at a first circumferential position of the first rotor core, and the second insertion hole is occluded at least at a second circumferential position of the second rotor core. The second circumferential position corresponds to the first circumferential position.

Abstract: A rotor of an electric motor configured by combining a resin magnet section molded of thermoplastic resin containing ferrite and a rotation shaft includes a magnetic section for position detection integrally formed of the thermoplastic resin on an end face on one side of the resin magnet section, the thermoplastic resin being injected from an inner diameter side of the resin magnet section to the end face. Because the position of the rotor can be detected by the magnetic section without using a magnet for position detection, cost reduction can be achieved while the accuracy of detecting the position of the rotor is ensured.

Abstract: A motor includes a stator, and includes a first substrate and a second substrate mounted on the stator. The stator has a stator core in a ring shape and a first coil of a first phase and a second coil of a second phase wound around the stator core. The first substrate includes a first power supply wiring to supply electric power to the first coil. The second substrate has a second power supply wiring to supply electric power to the second coil.

Abstract: A rotor includes a yoke that is formed annularly and a resin magnet integrated with the yoke. The yoke includes a first inner circumferential surface, a second inner circumferential surface, and a third inner circumferential surface. The second inner circumferential surface is adjacent to the first inner circumferential surface, and has a radius larger than a radius of the first inner circumferential surface. The third inner circumferential surface is adjacent to the second inner circumferential surface, and has a radius larger than both of the radius of the first inner circumferential surface and the radius of the second inner circumferential surface.

Abstract: A stator for an electric motor includes a substrate, sensor leads and power leads connected to the substrate, and a lead wiring part that retains the substrate and routes the sensor leads and the power leads. The substrate has a Hall IC that is a position detection circuit for a rotor mounted thereon, and a hole for inserting a terminal provided in a board-in connector formed therein. The substrate is retained only by the lead wiring part, and the sensor leads and the power leads are retained by the lead wiring part.

Abstract: A motor includes a rotor having a shaft, a stator provided so as to surround the rotor, a first bearing and a second bearing rotatably supporting the shaft and disposed at a distance from each other in an axial direction of the shaft, a molded resin part covering the stator and having a bearing support part supporting the first bearing, a bracket attached to the molded resin part, supporting the second bearing, and having conductivity, and a conductive member provided in contact with both of the bearing support and the bracket.

Abstract: The rotor of the electric motor includes a rotor magnet. The rotor magnet includes a yoke, and a resin magnet part formed of a resin material containing rare-earth magnetic powder, which is disposed outside the yoke. Multiple pedestals and multiple connecting portions are formed on an end surface of the yoke. The connecting portion joins together the adjacent pedestals. The connecting portions are disposed in a middle position of the end surface in the radial direction. The connecting portions each have a height less than the height of the pedestals. The present invention gains advantage in that the amount of rare-earth magnetic powder used in the rotor magnet can be reduced.

Abstract: An electric motor includes an annular stator and a consequent-pole-type rotor including an annular rotor core disposed on the inner side of the stator and a plurality of permanent magnets disposed inside the rotor core and arrayed in a circumferential direction of the rotor core, in which the stator is covered with an unsaturated polyester resin.

Abstract: A permanent-magnet synchronous motor includes: an annular stator core; a cylindrical rotor disposed inside the stator core, and having a first end face in an axial direction of the stator core and a second end face in the axial direction; a disk-shaped sensor magnet having a plurality of magnetic poles disposed circumferentially, and having a third end face and a fourth end face; and a magnetic sensor disposed so as to be opposed to the fourth end face in the axial direction, and detecting a rotating position of the sensor magnet. When a first thickness means the axial thickness at the center of each of the magnetic poles and a second thickness means the axial thickness of an inter-magnetic-pole portion between adjacent magnetic poles of the magnetic poles, the second thickness is greater than the first thickness.