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JP5117785B2 |
To provide a structure of motor with a built-in rotor that can prevent dirt in the outside from entering into the interior of motor or dropping on an image sensor attached in the interior of motor, can keep cleanliness of the image senso...
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JP2013009560A |
To provide a hybrid stepping motor which can obtain high torque by effectively using the stacking thickness of a fixed magnetic pole, while having a structure causing no increase in cost, and which can also carry out control at a finer s...
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JP5116280B2 |
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JP5110809B2 |
An electric motor has a rotor having an end portion and a recessed portion formed at the end portion. A rotational shaft is mounted to the rotor. A stator covers an outer peripheral portion of the rotor and forms a magnetic field that ge...
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JP5101935B2 |
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JP2012249504A |
To provide a motor which inhibits the increase of magnetic resistance even when openings are provided at a motor case forming a magnetic path.A stator 5 of a motor includes: a motor case 70 made of a magnetic material; and stator cores 6...
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JP2012249468A |
To provide a hybrid type stepping motor capable of improving torque by effectively using the product thickness of a stator magnetic pole, and downsizing a motor.A stator is equipped with a magnetic pole unit 421 disposed so as to separat...
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JP5096705B2 |
A claw teeth type electric rotary machine comprises a stator including an annular core with claws formed from a powder core and an annular coil installed inside the annular core, and a rotor rotatably positioned inside the stator. An inn...
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JP2012237343A |
To stably and accurately keep control of valve opening of a stepping motor driven type control valve.A control valve 1 includes a valve operating member 136 which drives a valve element in a direction of opening/closing a valve portion b...
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JP2012239319A |
To allow loose dimensional control of components and reduce manufacturing costs in a rotor where a rotor core, a magnet, and a sleeve are fixed to one another, and the sleeve and a rotating shaft are fixed to each other, by means of pres...
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JP2012235667A |
To provide a motor capable of reducing noise.A motor 1 comprises: a rotor 4 including a rotary shaft 2 and a magnet 3 for drive fixed to the rotary shaft 2; a stator 6 including a coil 15 for drive disposed on an outer peripheral side of...
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JP5086116B2 |
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JP5084475B2 |
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JP2012231587A |
To provide a stepping motor which realizes the cost reduction without deteriorating the vibration proof performance of the stepping motor.In a motor vibration proof mechanism, first assembly surface parts 6a, assembled so as to overlap a...
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JP5079797B2 |
A bi-stable magnetic switch assembly is provided that comprises a stator and a rotor, which is configured for rotation with respect to the stator between a first latched position and a second latched position. The stator and the rotor co...
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JP5064962B2 |
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JP2012205317A |
To provide a motor in which beating noise is suppressed without displacement of a shaft toward a bearing member or urging of the shaft in a shaft direction, and an increase in size is suppressed.A motor comprises: motor cases 7 and 8; ex...
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JP5049567B2 |
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JP5034069B2 |
In a stepping motor including two stators and a rotor having two magnets, three dimensional relations, specifically a relation of Lm/Ls, another relation of d/2Lm, and still another relation d/D, are optimally determined while satisfying...
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JP5032746B2 |
A clutch having a multiple pole electromagnetic actuator is useful in motor vehicle powertrain components such as transaxles, transfer cases, transmissions, differentials and the like. The electromagnetic actuator includes a stationary c...
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JP5034521B2 |
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JP5034070B2 |
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JP2012178924A |
To provide a stepping motor and an EGR valve enabling weight reduction by reducing sizes and the number of components.A stepping motor 30 includes: a cylindrical magnet rotor 40 magnetized in polar anisotropy; a first stator 42 arranged ...
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JP5020649B2 |
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JP5021053B2 |
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JP5018529B2 |
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JP5015621B2 |
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JP5010903B2 |
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JP2012161141A |
To provide a claw-pole type stepping motor capable of obtaining reliable contact between an outer yoke and an inner yoke.An inner yoke 21 includes a toric protrusion 70 having an outer peripheral surface 71. The dimension of the outer pe...
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JP5008462B2 |
A hybrid type stepper motor preferably includes a two-phase eight-main-pole stator and a rotor defined by two rotor units each having a pair of rotor magnetic poles with a permanent magnet interposed therebetween. Each rotor magnetic pol...
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JP2012157148A |
To provide a motor which easily improves assembling accuracy in a structure where a bearing is provided at only one side.A stepping motor has a shaft 3 serving as a rotation shaft of a rotor and a bearing 10 pivotally supporting the shaf...
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JP5002381B2 |
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JP4999369B2 |
A multiphase claw-pole type electric rotary machine has two or more phases-stator units. The stator units are arranged phase by phase in an axial direction of the electric rotary machine. Each phase stator unit comprises a pair of comple...
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JP5001060B2 |
To surely hold a rotor of an electromagnetic actuator at a rest position. The electromagnetic actuator includes: a rotor 110 which turns between the rest position and a maximum rotation position; a first yoke 120 which can generate a mag...
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JP4996021B2 |
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JP4982796B2 |
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JP4971009B2 |
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JP4960506B2 |
Disclosed is a step actuator apparatus. The step actuator includes a step actuator including a housing, a stator installed in the housing, a rotor rotating by a reaction with the stator and a screw member coupled to the rotor and moving ...
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JP4964411B2 |
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JP2012120395A |
To provide a motor and an electric pump therewith which suppress radial movement of stator pole portions.A U phase stator 71, a V phase stator 72 and a W phase stator 73 of a motor section 3 are arranged radially outward of a rotor 60 an...
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JP2012115082A |
To provide a stepping motor including a vibration prevention mechanism which suppresses vibrations in transient response of motor rotations without interfering with other components of a system using the stepping motor.A stepping motor 1...
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JP4943750B2 |
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JP4941986B2 |
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JP2012090513A |
To provide a spherical surface stepping motor that can certainly make a rotor statically determinate and has an excellent T-θ characteristic.In considering rotation around a prescribed axis, a rotor magnetic pole and a stator magnetic p...
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JP4925730B2 |
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JP4923646B2 |
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JP4920950B2 |
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JP4914060B2 |
A flywheel electric generator comprises a star-up motor, a flywheel rotary shaft rotated by the motor, a flywheel rotating by coupling with the rotary shaft, a plurality of permanent magnets disposed at substantially equal spaces of cent...
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JP4910089B2 |
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JP4908811B2 |
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