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JP2010226784A |
To provide a low-cost, high-quality magnet assembly for motors having an integrally formed resin permanent magnet with a multiple-stage configuration, and to provide a rotor and a motor using the magnet assembly.The magnet assembly 1 for...
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JP2010226829A |
To provide a stepping motor which can reduce power consumption, a method of manufacturing thereof, an electronic apparatus, and a clock.A permalloy material to serve as a magnetic material is stored in a furnace. Next, steam-containing h...
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JP2010226924A |
To provide an air core stepping motor having a pivotally supporting structure having advantages such as small hysteresis (axial loss), freely settable dimension, ease of thinning or correct calculation of the coaxiality between a rotor a...
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JP2010226828A |
To provide a stepping motor which can reduce power consumption, an electronic apparatus, and a clock.The stepping motor 10 is composed of a rotor 11, a stator 12 which includes a hollow part for accommodating the rotor 11, and a yoke 13 ...
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JP4553776B2 |
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JP4551672B2 |
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JP2010206955A |
To provide an HB-type stepping motor that avoids a drop in torque to thereby improve the efficiency of the motor.The HB-type stepping motor includes a rotor 1 in which magnetic poles 3 are formed so that magnetic poles adjoining each oth...
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JP4542578B2 |
A stator structure of a motor includes a magnetically conducting element, a circuit board, a bus line and a housing. The magnetically conducting element has at least one coil. The circuit board is positioned adjacent to the magnetically ...
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JP4543793B2 |
A rotor, which is rotatable about a rotor shaft, comprises N poles and S poles alternately disposed in the circumferential direction, and rotor-side neutral poles disposed adjacent to the N poles and the S poles along the axial direction...
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JP2010530729A |
A stepping motor includes: a rotating shaft; a rotor fixed to the rotating shaft; a terminal unit disposed at a side of the rotor, and having an external power supply applied thereto; a coil coupled to the terminal unit; and an outer yok...
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JP2010200475A |
To provide a stepping motor that is driven by low power consumption, achieves high torque, and reduces variations in characteristics.The stepping motor has a rotor with a two-pole magnetized permanent magnet and a rotation axis, an excit...
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JP4538984B2 |
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JP4541939B2 |
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JP4533904B2 |
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JP4531463B2 |
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JP4531724B2 |
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JP4533024B2 |
A driving apparatus includes a magnet that is magnetized to at least two poles in a circumferential direction and fixed to a rotor axis formed with a soft magnetic material, and first and second coils arranged in the same direction as th...
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JP4526290B2 |
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JP4523783B2 |
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JP4510548B2 |
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JP2010158138A |
To provide a stepping motor with a lead screw supporting a rotor containing a rotating shaft forming the lead screw by a pair of radial bearings while having high reliability. The stepping motor with the lead screw includes: the rotor 7 ...
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JP4505050B2 |
A step motor is composed of a rotor, first and second stators, and a magnetic member. The rotor is rotatably supported and comprised of a magnet having magnetic poles magnetized in four angular sections. The first stator has a pair of co...
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JP4499868B2 |
A stepping motor is provided, which includes: exciting coils (1a1,1a2); a rotor provided with a plurality of N/S poles so as to rotate following a change of an excitation state of the exciting coils; and a detecting coil (1c) provided se...
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JP4498275B2 |
A step motor includes a rotor having four magnetic poles, a first magnetic pole magnetically excited by a first coil, a second magnetic pole magnetically excited by a second coil, and a third magnetic pole magnetically excited by the fir...
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JP4498068B2 |
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JP2010148189A |
To provide a member of a stepping motor reducible in thickness in a front direction, and also reducible in the number of part items. The member of the stepping motor is constituted in such a manner that: two flat surfaces are formed so a...
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JP4485723B2 |
A method for setting an electric motor, which includes, during a non-powering sequence of at least one of the motor phases, measuring on a predetermined time window, the induced voltage (Ti) in the non-powered phase and in comparing its ...
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JP4485840B2 |
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JP4490063B2 |
To provide an electric valve capable of restricting the generation of discharge between a can and a stator due to a noise, reducing influence of the noise on peripheral circuits, and surely electrifying between the stator and the valve m...
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JP4481725B2 |
To provide a small lens-driving device which drives a lens along an optical axis, and to provide an image pickup unit. The lens-driving device is provided with a stator which has a cylindrical shape and forms a magnetic field within the ...
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JP2010130886A |
To provide a stepping motor that can gain a large torque without increasing an outside dimension. A stepping motor 100 has multiple stator sets 20 arranged in the motor axis line L direction and keeps the angle positions of pole teeth 21...
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JP4475445B2 |
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JP4479856B2 |
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JP4470524B2 |
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JP4460942B2 |
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JP2010098942A |
To provide an electric motor apparatus capable of high output torque and rotation in a predetermined direction.The apparatus includes: a rotor 135 having a permanent magnet with two magnetic poles while having an interval of about 180 de...
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JP4458988B2 |
A magnet rotor in which rotation prevention and positional displacement (rattling, and misalignment of axes) between a magnet and a rotor body can be restricted, a movable magnet type-instrument with the magnet rotor, and a stepping moto...
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JP4455407B2 |
A stepping motor includes a magnet (1) having a magnetized portion, first (2) and second (4) coils, a first yoke (7) having a first-magnetic-pole portion, a second yoke (9) having a second-magnetic-pole portion, and a rotating yoke (8) h...
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JP4452154B2 |
A motor includes a rotor part having a rotor shaft and a rotor magnet, a stator part oppositely disposed to the rotor magnet via a gap space, a bearing rotatably supporting the rotor shaft, a spring member abutting with one end of the ro...
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JP4455128B2 |
Provided are a motor and an optical apparatus each including: a rotatable rotor having a cylindrical magnet; a first coil; a first outer magnetic pole portion which is disposed at a center portion of the first coil and which is opposed t...
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JP4455095B2 |
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JP2010088198A |
To downsize a coil bobbin and enhance the assembling properties of a stepping motor by preventing connection failure to the terminal of the coil.Flange parts (6, 8) are provided to the end face of a bobbin body (a winding core part 4), a...
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JP4446513B2 |
To provide a motor-driven flow control valve easily assembled with few assembly mandays, easily handled and considerably reduced in assembly cost. This motor-driven flow control valve 10' is provided with a valve body 11 having a valve e...
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JP2010074880A |
To provide a stepping motor high in strength against bearing retainer coming-off and having a bearing retainer structure that enables cost reduction.The motor body 1 of the stepping motor integrally has a hat-shaped bearing retainer 20 o...
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JP4443665B2 |
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JP4442032B2 |
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JP2010051063A |
To provide a stepping motor wherein only resolution of the amount of rectilinear propagation is enhanced and both size reduction and durability enhancement can be thereby achieved.The stepping motor includes a speed reduction mechanism c...
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JP4423294B2 |
The multiphase step motor is capable of reducing vibrations of a rotor and torque ripples in spite of switching current flowing through stator coils. Stator units are divided into 2n (n is an integer one or more) per one phase and coaxia...
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JP4423411B1 |
To weaken an attractive force due to a magnetic force of a cylindrical magnet which is a rotor with respect to a magnetic pole in a non-excited state, thereby reducing a braking action and a cocking phenomenon as much as possible. An ann...
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JP2010044825A |
To provide an optical information recording and reproducing apparatus which records and/or reproduces information to/from both a hologram disk and a conventional optical disk, improves usability, and reduces size and cost.The optical inf...
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