摘要:
A recording paper separating device for use in a copying machine, the device including a transfer charger for transferring a toner image from a photosensitive member onto a recording paper by discharge effected by a charging wire accommodated in a shield casing, a bias-loaded recording paper discharger, a transfer-power source, and a control for keeping a current supplied from the power source to the charging wire constant except for the current flowing through the recording paper discharger.
摘要:
A tape drive device in which a cavity is formed in a reel hub provided for supplying or taking up a tape-shaped information recording and reproducing medium such as a magnetic tape or a film. A motor including a rotor unit and a stator unit is partly or wholly received within the cavity of the reel hub, and the rotating force generated by the rotor part of the motor is transmitted directly or through a reduction gearing to the reel hub to cause rotation of the reel hub.
摘要:
An electric motor comprises a rotor constructed by a disk-shaped multi-pole magnet secured to a rotary shaft and rotatably supported, and a stator constructed by a pair of star-shaped flat drive coils arranged adjacent and opposing to the disk-shaped multi-pole magnet. Sinusoidal wave currents, the phase angles of which differ by 90.degree. from each other, are supplied to the pair of drive coils to drive the magnet. A speed detection coil having a plurality of power generating strands is arranged in a field of the magnet and a field of the drive coils to produce a signal having a frequency corresponding to a rotational speed of the magnet. A cancellation coil is also arranged in the field of the drive coils to produce a voltage which varies with the change of the drive coils, which voltage is added to an output signal from the speed detection coil to cancel out a signal developed across the speed detection coil by the change of the drive field so that a speed detection signal of a high S/N ratio is derived to enable the control of the rotation of the electric motor.
摘要:
Provided is a rotating electrical machine, including: temperature information acquisition means for acquiring information on a temperature of a brush; rotation information acquisition means for acquiring information on a rotation angle of a rotation shaft; and a wear amount calculation section for acquiring the temperature of the brush based on temperature information including output information of the temperature information acquisition means, and for calculating a total wear amount of the brush by integrating a product of a value corresponding to the temperature of the brush, the value being a wear amount function defined as a wear amount per unit sliding distance of the brush with the temperature of the brush used as a variable, and a value including an rotational speed of a rotor, with respect to time from immediately after start of use of the brush to a current time.
摘要:
A rotary electric machine including a brush used to supply a field current to a field winding of a rotor, a brush holder holding the brush, a power circuit portion connected to a heat sink having fins, and a case covering the power circuit portion and the brush holder. An air passage is provided between the brush holder and the fins of the heat sink, and an opening is provided to the case so as to cover component members of the brush holder in a shape conforming to an outer peripheral portion of the brush holder, from which cooling air is allowed to pass through the air passage.
摘要:
A rotating electrical machine includes: a case; a rotor; a stator; a control portion including a field circuit portion used to supply a current to a control circuit and the field winding; a power circuit portion controlling a stator current; a heat sink installed so as to cool the control portion and the power circuit portion; a first waterproof portion providing waterproofing to signal terminals of the power circuit portion and the field circuit portion; a second waterproof portion provided with through-holes from which a part of the control portion and the power circuit portion is exposed and providing waterproofing between the control portion as well as the power circuit portion and the heat sink; and insulation portions installed in the through-holes of the second waterproof portion and isolating the control portion and the power circuit portion from the heat sink.
摘要:
In a controller-integrated electric rotating machine configured to assemble a front side semi-manufactured assembly E formed from an electric rotating machine main body 1 and a front bracket 4 with the rear side semi-manufactured assembly D to which a rear bracket 5, a control unit assembly A, a power unit assembly B, and a brush unit assembly C are integrated, a series of brush restricting pin insertion holes 24 are disposed from a rear side end surface of the control unit assembly through the brush, and therefore assembling workability is improved without failures in assembling work which occur due to breaking away of a brush from a brush holder to the rotary shaft side.
摘要:
A turning direction indicator device includes an actuator that rotates by an operation of the operating lever, a cam body that shifts in a rearward direction approaching a cancel cam. The cam body is rotatable about a rotation axis, and shifts in the rearward direction when the actuator rotates. The cam body includes a rear wall surface opposite to the cancel cam. The rear wall surface has two end parts symmetrical to each other with respect to the longitudinal axis. A spring elastically contacts the end parts to urge the cam body in the rearward direction. The spring also urges the cam body in a rotating direction about the rotation axis when the longitudinal axis of the cam body rotates. The turning direction indicator device suppresses a hitting noise produced by the cam body and a release element with such a simple structure, and operates reliably.
摘要:
In a paper feeder, an air hole that allows air to pass through is formed on a paper transport belt, a fan for breathing and exhausting air and an exhaust duct having an opening for exhausting air. Air is exhausted from the fan through the exhaust duct, the fan and an air intake duct for breathing air are connected to each other, and air is breathed from the air hole through the air intake duct towards the fan. This paper feeder includes: an air state detection unit for detecting at least one of an air pressure and an air flow rate in the air intake duct; an opening and closing unit provided to the air intake duct for opening and closing the opening; and a control unit for opening and closing the opening based on a result of detection by the air state detection unit.
摘要:
A dynamoelectric machine main body that includes: a housing that is constituted by a rear bracket and a front bracket; a rotor; a stator; and a fan, and a power supply unit that is mounted integrally onto the dynamoelectric machine main body are included, the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the power supply unit is disposed between the fan and a bottom portion of the rear bracket, and the rear bracket has: air discharge ports that are formed on portions that are positioned radially outside the fan; and air suction ports that have openings nearer to a bottom portion than the power supply unit, and includes a partitioning member for configuring a ventilation channel that extends from the air suction ports to the air discharge ports that is disposed between the power supply unit and the fan.