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JP5931273B2 |
A phase control circuit for a brushless motor includes a signal output unit that outputs M signals, whose phases differ from each other, in response to a change in the magnetic field resulting from the rotation of magnets placed in a rot...
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JP5931903B2 |
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JP5931399B2 |
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JP2016103929A |
To enable suppression of increasing in size of an inner rotor type motor by a method of positioning a stator in an axial center direction.Convex portions 206 are formed on the inner peripheral surfaces of housings 12, 13, a concave porti...
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JP5925330B2 |
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JP5921214B2 |
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JP2016093089A |
To increase horsepower, according to the present invention, by dividing a motor shaft vertically into four, providing magnets at four shifting positions which shift by 90 degrees each, combining a repulsive closed magnetic circuit electr...
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JP5920290B2 |
A motor includes a stator and a rotor that is arranged opposite to the stator through a predetermined air gap. The stator is such that a plurality of coils are wound around respective slots for each of a plurality of phases. In the stato...
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JP2016073135A |
To provide a motor device capable of accurately calculating a rotation angle of a rotor without using an encoder.The motor device includes: a stator around which a plurality of coils are wound; the rotor having different polarities in a ...
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JP5912430B2 |
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JP5911756B2 |
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JP5908200B2 |
A brushless direct current (BLDC) motor has a 3-phase winding 20 and six stator teeth 14, 15 with alternate stator teeth 14 being wound and the remaining stator teeth 15 being left unwound. The winding 20 has three legs, one for each pha...
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JP5907699B2 |
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JP5899648B2 |
A drive unit, which can be included in an image forming apparatus with peripherals disposed thereto and use a control method therefore, includes an inner rotor brushless DC motor, a driver, a rotation detector, and a controller. The driv...
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JP5899649B2 |
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JP2016046987A |
To provide an inexpensive, highly reliable motor angle detection device capable of forming a current closing circuit including a motor and securely removing an oxide film of a connector.A motor angle detection circuit comprises: a resolv...
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JP5889534B2 |
A brushless DC motor includes a plurality of permanent magnet segments arranged on an outer circumferential surface of a yoke member. Each of the permanent magnet segments includes a thinnest portion positioned in a circumferential cente...
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JP2016036212A |
To provide an air blower capable of absorbing vibration while avoiding an increase in the mass of the air blower.Since a rotor 182 of a position detector is connected to a motor rotor 141 via an elastic body 183, vibration of an air blow...
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JP5865174B2 |
To provide a brushless motor which allows for high output without increasing the number of permanent magnets.Outside magnet magnetic poles 21 and outside cores 22 are formed alternately in the outside rotor 8 on the outside of a stator 7...
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JP5863246B2 |
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JP5861660B2 |
A motor includes a stator core fitted to a cylindrical portion of a case, a rotor core being rotatable in the stator core, soft magnetic poles radially extending from the rotor core, and magnet poles disposed between the soft magnetic po...
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JP5858220B2 |
To arrange magnets in a circumferential direction and obtain a strong magnetic force.A rotation part 3A of a motor 1A has a shaft 31A, a rotor holder 32A, a magnet holder made of resin, and a plurality of magnets 34A. The magnet holder h...
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JP5850262B2 |
A rotating electric machine has a semiconductor magnetic sensor and a cylindrical housing with a cylinder part, which is made of a soft magnetic material, positioned closer to the semiconductor magnetic sensor relative to a back yoke of ...
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JP5850259B2 |
A housing and a rotary shaft of a motor are formed of non-magnetic material. A soft magnetic member is provided between a first axial end surface of a fixed core and a bearing. The soft magnetic member is provided on the fixed core side ...
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JP2016019362A |
To detect the position of a rotor with improved accuracy by using a Hall element.A magnet 1 included in a rotor part 2 has a projection 1a projecting from a stator core 3 of a stator part 5 in an axial direction of a shaft 10. A Hall ele...
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JP2016012988A |
To provide a rotary body driving device excellent in assemblability and rotation controllability, capable of being assembled by accurately aligning rotation reference positions of a rotary body to be a load and a rotor, whose cost is red...
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JP2016012995A |
To provide a brushless motor provided with a motor housing made compact including an attachment of an ECU, the motor being lightweight and easy to manufacturing, and to provide an electric power steering device and a vehicle mounting the...
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JP2016005414A |
To provide a motor of a structure provided with a recess part at a bottom surface of a yoke, capable of fastening a rotational position sensor to the motor while having concentricity by a simple method, a power steering device including ...
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JP5840676B2 |
A hydrostatic actuator and an arrangement for attaching it to a receiving component are provided. The hydrostatic actuator has a master cylinder containing a housing and a piston movable axially within the housing which acts on a pressur...
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JP2015220971A |
To provide a brushless motor with improved reliability capable of preventing drive failures of the brushless motor by improving the accurate position accuracy of a Hall sensor IC.A brushless motor 1 is formed with two projections 32j and...
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JP2015220793A |
To provide a motor capable of easily positioning a sensor stator in a peripheral direction while suppressing a deviation between a bearing and an axis of the sensor stator.The motor includes: a first frame end 13 having a sensor holding ...
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JP5827904B2 |
To provide a motor that can accurately detect magnetism generated from a rotor magnet.A motor 10 includes: an outer rotor 22 having a first magnet part 62 subjected to polar anisotropic orientation and arranged outside a teeth 42, and a ...
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JP5827656B2 |
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JP5819690B2 |
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JP5820686B2 |
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JP2015204638A |
To increase the number of magnet layers without restricting a gate diameter in an IPM type brushless motor with which the magnet layers are formed by molding a bond magnet while filling the inside of a rotor therewith.A brushless motor 1...
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JP5806073B2 |
A brushless motor includes a rotor and a stator. The rotor is provided with a rotor core including a plurality of magnet poles and a plurality of core poles. A void is formed at a boundary between each core pole and an adjacent magnet po...
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JP2015198519A |
To provide a brushless motor that can detect the rotation angle of a rotor with a small number of components.A rotation angle detection part 14 includes light reflection parts (light reflection surfaces 15a to 15c) that are provided on a...
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JP5799910B2 |
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JP5797608B2 |
To enhance operability by making a DC brushless motor compact in size in a machine length direction, thereby making an electric power tool compact in a machine length, in the electric power tool such as an impact driver employing the DC ...
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JP5797960B2 |
A method for driving a brushless motor including a first coil and a second coil for two phases but does not include a coil for one of three phases. A three-phase inverter circuit is connected to the first coil and the second coil. Curren...
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JP5776925B2 |
A rotation angle calculation unit calculates a zero-crossing time point when a zero-crossing is detected for an output signal V1 or an output signal V2. The rotation angle calculation unit calculates a time interval (zero-crossing interv...
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JP5775853B2 |
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JP5749535B2 |
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JP5748698B2 |
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JP5742025B2 |
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JP5743947B2 |
To provide a rotor configured to improve the accuracy of position information of the rotor by suppressing dispersion of position detection of the rotor due to dispersion of attachment position of a magnetic detection element, thereby sup...
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JP5740566B2 |
A motor of the present invention is provided with a storage portion, and information stored in the storage portion can be output to the outside.
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JP5738059B2 |
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JP5729727B2 |
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