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JP2012065505A |
To provide an electric motor capable of achieving difficult out-of-step.The electric motor includes: a rotor 20 which has a gear shape and is magnetized around a rotating shaft in the radial direction; a core 150 which is disposed to fac...
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JP4901257B2 |
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JP4890939B2 |
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JP4891631B2 |
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JP4884875B2 |
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JP2012039709A |
To provide a motor, pump with motor as drive source, and pump-driven apparatus using the same, capable of achieving noise reduction and low vibration.The motor 1 includes a plurality of stators 3, 4 having stator cores 31, 41 and winding...
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JP4882102B2 |
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JP4874474B2 |
It is a stepping motor enabled to prevent generation of detent torque therein and arbitrarily set the detent torque. This stepping motor has a rotor constructed by rotatably supporting a shaft, to which a multi-polarized permanent magnet...
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JP4874541B2 |
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JP4878226B2 |
A drive apparatus having a shortened axial dimension. First and second magnets are each formed into a semi-cylindrical shape and each provided with a magnetized pattern portion. A rotor yoke includes a shaft portion and a magnetic pole p...
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JP4869912B2 |
A coil bobbin includes: a body portion around which a coil is wound and having a cylindrical shape; a pair of flange portions formed at both ends of the body portion respectively; and terminal portions which are formed in the pair of fla...
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JP2012023897A |
To provide a motor that reduces more noise and improves rotation performance more than conventional motors.A motor 1 includes: a rotating shaft 2; a driving magnet 3 fixed to the rotating shaft 2; a plurality of pole teeth 16b arranged s...
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JP4865644B2 |
An actuator includes: a coil for excitation; a rotor rotatably supported; a stator effecting a magnetic force on the rotor for rotation, the stator having first and second leg portions arranged side by side; and first and second coil fra...
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JP4868442B2 |
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JP4868201B2 |
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JP4854305B2 |
A driving apparatus that can be made compact, without increasing the number of component parts and decreasing diameters of a rotating shaft and bearings. When a first unit assembled from a first stator and a first bobbin is coupled to a ...
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JP4849516B2 |
A light amount adjusting device mounted with a driving device which can have a reduced size in the direction of thickness. In this controller, a magnet (1) is formed into a hollow circular disk shape and has at least one disk surface mag...
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JP4852334B2 |
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JP4852113B2 |
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JP2012005161A |
To provide a cup-type stator yoke of a claw pole-type stepping motor, in which length of a pole tooth can freely be set by constituting the stator yoke by split yokes, concentricity of an outer periphery and an inner periphery in the com...
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JP2012005211A |
To provide an inexpensive rotary electric machine having a new bearing holding member to support a bearing.A rotary electric machine includes a stator in which a winding is applied to a plurality of main poles of a stator core and a roto...
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JP4839200B2 |
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JP4831682B2 |
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JP2011244595A |
To provide a pre-load spring preventing an end of the pre-load spring from being engaged with an insertion hole of a washer in a pre-load spring structure of a motor.The motor includes a motor body 10 where a rotary shaft 11 protrudes, a...
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JP4828043B2 |
The stator assembly of a PM stepping motor having a two-phase structure in which two stators arranged along the circumferential direction in such a manner that respective pole teeth are intermeshed together are combined back to back so a...
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JP4827648B2 |
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JP4815299B2 |
A motor may include a rotor having a rotor shaft and a magnet, at least a stator core disposed around the rotor and provided with a plurality of pole teeth, and at least a coil mounted on the stator core. The stator core includes a termi...
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JP4814574B2 |
[PROBLEMS] To provide a motor not requiring a complex control circuit, produced in a simple structure at low cost, having a long lifetime, and downsized and thinned. [MEANS FOR SOLVING PROBLEMS] Either a rotor (1) or a stator (3) has per...
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JP3171632U |
To provide a drive device for a camera, which is miniaturized and improved in manufacturing cost by being integrally formed with an adhesive body containing magnetic powder as a magnet of a rotating member. A drive device for the camera ...
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JP2011223776A |
To provide an instrument unit which can be further miniaturized and can further increase torque.A stator 5A includes: main stators 5C and 5E which define a rotor hole 5D and a coil hole 5F; and a sub stator 5G which is mountable to the m...
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JP2011217582A |
To provide a PM stepping motor with an output gear having a structure in which the length of the motor in the axial direction is shortened through use of a single bearing.A PM stepping motor 10 with an output gear is equipped with: an at...
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JP2011217567A |
To reduce the overall cost of a plurality of motors, each including a control circuit, and also to reduce the size and weight thereof.A plurality of motors that can be driven by a direct current as a unidirectional current are driven by ...
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JP4794555B2 |
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JP4796779B2 |
A stepping motor includes: a stator including a coil that is wound so as to form a hollow space; a rotor including a magnet to be disposed in the hollow space of the coil, the rotor being rotationally driven by changing magnetic poles of...
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JP4797580B2 |
A pulse motor includes: a first iron core having a plurality of iron core teeth; a second iron core having a plurality of iron core teeth, the second iron core being arranged to oppose to the first iron core through an air gap; and commu...
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JP2011200545A |
To provide a laundry apparatus for changing the output characteristic of a motor in response to various rotation loads, and also obtaining a larger torque.A washing machine used also as dehydrator includes a transmission mechanism for pe...
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JP4785432B2 |
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JP2011193576A |
To provide a motor to be reduced in size in a direction substantially orthogonal to a magnetic pole surface, a pump to be driven by the motor, and a pump drive apparatus with the pump mounted thereon.The motor 1 includes a rotor 3 includ...
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JP2011193575A |
To provide a motor for improving motor efficiency by reducing vibration, a pump driven by the motor, and a pump drive apparatus with the pump mounted thereon.The motor 1 includes an inner circumferential stator 4 positioned at the inner ...
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JP2011188626A |
To provide a motor which hardly allows a biasing member to come off, and has superior vibration resistance and impact resistance.The motor 1 includes: a rotor 20 having a rotating shaft 22 and a permanent magnet 24 fixed on a peripheral ...
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JP4773053B2 |
A hybrid synchronous electric machine driven by a traverse magnetic flux has a rotor and a stator, its rotor armature (11) has a heavy-weight copper ring (12) in the proximity of a motor active component, and a lateral insulation gap (22...
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JP4763065B2 |
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JP4759321B2 |
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JP4761991B2 |
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JP4755924B2 |
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JP4757887B2 |
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JP4748649B2 |
A low-cost and high-output driving device compact in size and reduced in axial length. In a stepping motor as the driving device, a stator has a plate part, and first and second outer magnetic pole parts axially extend from the plate par...
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JP4748662B2 |
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JP4748631B2 |
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JP4748660B2 |
A drive apparatus which is small in size, short in axial length, low in cost, and high in output. A stepping motor as the driving apparatus includes a first coil, a second coil, a magnet, and a rotor comprised of a core and a rotary shaf...
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