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JP4657635B2 |
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JP4656913B2 |
A two-phase or three-phase claw-pole type rotary machine comprises two or three coaxially arranged single phase rotary machine elements. Each of the rotary machine elements has a magnet rotor, a claw-pole type stator, and an annular stat...
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JP2011055691A |
To provide a motor for obtaining a sufficient number of rotations and torque even when a motor current is supplied to a plurality of stators equipped on a common rotating shaft with a smaller number of drive circuits.In the stepping moto...
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JP2011052270A |
To provide a nonmagnetic austenitic stainless steel exhibiting excellent oxidation resistance while securing its non-magnetic properties.The nonmagnetic austenitic stainless steel is composed of an alloy having a composition containing, ...
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JP2011055614A |
To provide a stepping motor rotor in which another member does not exist on the outer circumferences of a rotor shaft having reduced bearing friction with a tenon having a diameter smaller than a commonly used value and a rotor magnet.Th...
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JP2011055615A |
To provide a rotor for a stepping motor, having a new structure which is used to fix a rotor magnet or a rotor pinion with a rotor shaft and effective when the rotor is miniaturized.In the rotor for a stepping motor which comprised a rot...
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JP2011055598A |
To provide a stepping motor that suppresses temperature rise of a magnetic sensor even when a magnetic encoder is attached on a motor.The magnetic encoder 8 is formed for a rotating shaft 31 of a stepping motor 100. In forming the encode...
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JP4652440B2 |
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JP4646607B2 |
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JP4648732B2 |
A stepping motor comprising a circular stator core having a plurality of pole teeth at an inner circumferential edge and an air core coil fitted to the periphery of the pole teeth. An insulating film is formed on the surface of the air c...
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JP4646758B2 |
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JP4641595B2 |
A claw-pole permanent-magnet stepping motor includes a pair of cases containing two or more inductors in symmetrical arrangement with multiple claw poles. The case unit has an oval shape having thin flat side walls or thin stepped side w...
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JP4641882B2 |
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JP2011041453A |
To provide a PM stepping motor wherein a bearing can be made precisely coaxial to an outer yoke.The PM stepping motor is provided with a resin-made bearing 20 and a B-phase outer yoke 11B having a coil storing space S between a plurality...
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JP4629100B2 |
A stepping motor has stators arranged at both end sides in the direction of a shaft of a rotor magnet, each of the stators includes inner and outer yokes having pole teeth opposed to the outer peripheral surface of the rotor magnet, at l...
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JP4628064B2 |
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JP4628001B2 |
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JP4620575B2 |
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JP4619081B2 |
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JP4620590B2 |
An electromagnetic actuator has a rotor and a stator around which coils are wound to face portions of an outer surface of the rotor. The stator is C-shaped, the rotor is arranged so that a rotation axis thereof is existent in a space sur...
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JP4614865B2 |
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JP2011010434A |
To obtain a claw-pole type motor capable of improving the protection and insulation functions of conductors, and to provide a pump including the claw-pole type motor.A pair of edges 82, 83 is separated by a cutout section 81 of a protect...
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JP4610964B2 |
A small motor including a rotor, a stator, a bearing member which supports the rotor shaft in the radial and thrust direction and a bearing holding member which holds the bearing member. The bearing holding member is formed in a thin pla...
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JP2011004590A |
To provide a rotor support structure of a slim step motor for supporting a rotary shaft by only one bearing.The slim step motor includes a rotor comprising a magnet support provided on the peripheral face of a rotary shaft and a magnet p...
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JP2010288385A |
To provide a PM stepping motor that easily positions motor mounting plates when attaching the motor mounting plates, and prevents environmental pollution.The PM stepping motor comprises: two sets of stators including an internal yoke inc...
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JP4600886B2 |
A motor includes ( 1 ) a rotor including a permanent magnet fixed to a rotor shaft, ( 2 ) a stator including a rotor insertion hole and an inner periphery, where the inner periphery of the stator is oppositely disposed to the permanent m...
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JP4597015B2 |
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JP4596762B2 |
A stepping motor includes: a magnet; a coil arranged concentrically with the magnet and to be opposed to a magnet, a predetermined clearance being provided between the magnet and the coil; and a magnetic member that surrounds the coil an...
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JP2010279100A |
To provide a claw-pole motor wherein saturation due to the concentration of magnetic flux on an extension of a peripheral cylinder.In the claw-pole motor, a projection U62B is formed in an extension U61N obtained by extending the side fa...
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JP4592519B2 |
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JP4592518B2 |
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JP2010268655A |
To provide a compact stepping motor that increases a coil winding region and increasing the number of coil turns to increase a motor torque.The stepping motor 1 has inner and outer stator yoke cores 4, 5 having a plurality of pole teeth ...
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JP4584228B2 |
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JP2010258192A |
To provide motor winding, which can be made small in coil external diameter and which can solve the problems of insulation defects.A coil bobbin includes: a bobbin body having a coil wound around an outer periphery of a core portion in a...
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JP4574391B2 |
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JP4575489B2 |
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JP4574224B2 |
A linear motor not requiring a yoke structure is provided. A first unit forming a stator is constructed of two permanent magnet rods. The permanent magnet rods each have a magnetically permeable shaft and a permanent magnet row having a ...
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JP4574760B2 |
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JP4575490B2 |
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JP4573626B2 |
A motor includes a bearing receiving the shaft end of a rotor. a bearing holder provided with a through hole into which the bearing is inserted, a spring member which is disposed on one end side of the bearing holder and provided with a ...
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JPWO2009022366A1 |
An object of the present invention is to provide a stepping motor member capable of adhering a case and a bearing member by using a mold resin even for a member in which the polar tooth yoke member and the case are integrated. In the ste...
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JP2010252482A |
To provide a motor with a bearing holder to be easily soldered to a stator member.The bearing holder 14 is a press-formed product, including a bottom plate 14a having a through-hole H and soldered on an outer yoke 7ba overlappingly, side...
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JP4571058B2 |
A claw-pole motor includes a rotor having permanent magnets; and a stator having stator rings assigned to three phases, which are coaxially stacked along the same axis. Winding attachment portions are formed between adjacent stator rings...
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JP4568049B2 |
A motor includes a stator section with a two-phase structure having first and second stator assemblies disposed in an axial direction, and a plurality of pole teeth arranged at an electrical angle of 90 degrees along inner circumferences...
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JP2010239836A |
To provide a motor which suppresses noises during motor driving without increasing an urging force to a slide bearing.The motor has a rotor 10 rotating by magnetic connection to a stator 20, the slide bearing 40 supporting the shaft end ...
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JP4567161B2 |
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JP2010233445A |
To provide a sealing structure of a stepping motor, which is provided between a cover and the extension of an injection object to prevent water entry in a high humidity environment.A case is provided on the outer periphery of a motor, th...
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JP2010233286A |
To provide a stepping motor which is equipped with a bearing pressing structure that can stabilize a pivot bearing even if any force not in vertical direction acts on the pivot bearing by the rotational runout of a rotor even in a small ...
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JP2010226922A |
To provide a stepping motor having an advantage of obtaining higher output, and a lens device using this motor.The lens device 1 includes a fixed cylinder 12, a mirror cylinder 10 having a driving cylinder provided so as to be relatively...
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JP2010226923A |
To provide an air core stepping motor having high resolution required, capable of precisely adjusting a phase difference in reverse electromotive voltage of the motor for each phase.A rotor 10 of the air core stepping motor comprises cyl...
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