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JP4163904B2 |
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JP2008236909A |
To provide a stepping motor with which leakage magnetic fluxes generated among a plurality of magnetic pole teeth are reduced, and the torque efficiency of a rotor can be improved.The stepping motor 1 is provided with the cylindrical rot...
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JP2008236931A |
To provide a claw-pole type outer stator that can increase or downsize winding space.The outer stator is provided with a molded yoke 1, which has yokes 1aa-1bb formed by insert molding having pole teeth cut and made to stand from outer f...
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JP2008237011A |
To provide a claw pole device capable of enhancing reliability at starting and capable of securing stability of operation at rotating in one direction.The claw pole device is equipped with first and second claw pole plates, each of which...
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JP2008228442A |
To provide a hybrid stepping motor wherein iron loss and cogging torque are reduced and output torque is enhanced.The stepping motor includes a stator and a rotor. The stator includes: a stator core having salient poles and small teeth a...
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JP4154115B2 |
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JP4149799B2 |
To provide a miniaturized drive unit for rotation which suppresses the torsion of a rotating shaft and can be assembled easily. The drive unit 15 for rotation is provided with a stepping motor 22, a first gear case 16 and a second gear c...
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JP4150069B2 |
PCT No. PCT/FR96/01904 Sec. 371 Date Oct. 2, 1997 Sec. 102(e) Date Oct. 2, 1997 PCT Filed Nov. 29, 1996 PCT Pub. No. WO97/23943 PCT Pub. Date Jul. 3, 1997A two-phase motor formed by a stator part excited by electric coils and a magnetize...
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JP4150992B2 |
For driving an actuator which is optimum for and practical in use as a three-dimensionally positioning apparatus for a monitoring camera, a disco-lighting, an antenna, a multi-axis (multi-articular) robot, etc., an inner rotor type rotar...
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JP3144685U |
A stator structure comprising at least one first magnetic conductive plate and at least one second magnetic conductive plate, each magnetic conductive plate having a plurality of radial arms and pole tooth provided on ends of the radial ...
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JP2008211906A |
To provide a compact stepping motor with, high torque and low detent torque at low cost.This stepping motor includes: a rotor part 6 composed of a multi-polarized permanent magnet; a stator yoke part 9 having a plurality of interdigital ...
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JP4147491B2 |
To provide a magnet rotor improved in magnetic characteristics, a movable magnet type instrument using the magnet rotor, and a stepping motor using the magnet rotor, while suppressing the lowering of a magnetic force by taking account sh...
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JP4145501B2 |
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JP4145083B2 |
A motor (1) has a hollow-cylindrical shaped rotary shaft (14) provided with a hollow (17) therein and is mounted on a PCB (35) having an LED (37) as light source. Light emitted from the LED (37) passes through the hollow (17) from one en...
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JP4143432B2 |
A stepping motor includes a ring-shaped stator core having a plurality of pole teeth erected from an inner circumferential edge portion, a coil winding wound around the pole teeth and a terminal pin part to which a terminal end of the co...
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JP2008199835A |
To reduce vibrations and noise, by decreasing detent torque and to make it easy to process the terminal end of the winding of air-cored coils, in a stepping motor, electronic equipment using the same, and to provide manufacturing method ...
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JP2008199820A |
To provide coil device wherein the thickness of an insulating layer can be made smaller than the thickness of an insulating resin layer and an insulating layer can be formed without use of a coating process.The coil device is formed by: ...
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JP4141296B2 |
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JP2008193798A |
To provide a stepping motor which is improved in balance between magnetic fields in each phase, thereby stably and uniformly rotates a rotor, and can achieve low vibration and silence.The stepping motor 1 includes the rotor 10 and a stat...
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JP4136592B2 |
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JP2008187878A |
To provide a coil bobbin for a small electric actuator that can be set to a winding device surely, even if it is formed to be a near hollow cylinder to house a rotor inside it.A coil bobbin 511 has the shape of near hollow cylinder for h...
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JP2008187848A |
To provide a stepping motor that prevents outflow of a lubricant that is filled into a gap between a through-hole of a rotor and a support shaft, to the outside of the through-hole so as to suppress the generation of abnormal noise from ...
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JP4131360B2 |
A spring or springs are provided between driving-side members that operate together with an output shaft of a stepping motor, and driven-side members that operate together with a jaw member. Thereby, when the jaw members performs opening...
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JP4133409B2 |
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JP2008182796A |
To provide a stepping motor excellent in starting performance.The stepping motor is equipped with a stator 1, a rotor 2, a bracket 3 (bottom plate), and a cover 4. The stator 1 has: a first annular stator yoke 6 which has a plurality of ...
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JP4129309B2 |
The polyphase gearing motor has a magnetic rotor (2) having 4 or 5 sets of North/South poles. The stator has two sets of electrical coils (20,21) spaced round the rotor at a spacing of 120 degrees. There is a magnetic transition section ...
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JP2008178178A |
To provide a PM-type stepping motor which is smoother in rotation and is low-vibration.The stator of the PM-type stepping motor is made so that the space between pole teeth 23 and 24 and a rotor magnet 111 may change smoothly in such a w...
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JP2008178246A |
To provide a high-torque stepping motor without scaling up, and to provide a manufacturing method thereof.The stepping motor 1 has: A-phase, B-phase and C-phase stators 14A-14C attached on a stator shaft 11; stator portion magnetic shiel...
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JP4125371B2 |
PCT No. PCT/FR96/01904 Sec. 371 Date Oct. 2, 1997 Sec. 102(e) Date Oct. 2, 1997 PCT Filed Nov. 29, 1996 PCT Pub. No. WO97/23943 PCT Pub. Date Jul. 3, 1997A two-phase motor formed by a stator part excited by electric coils and a magnetize...
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JP4128894B2 |
PURPOSE: A valve body driving device is provided to execute exactly an opening and closing mode without enlarging the device by widening a region assigned for one mode by allotting five modes to a forward driving region and three modes t...
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JP4124704B2 |
To provide a rotation driving device capable of smoothly controlling the lighting direction of a vehicular lamp, and to provide its control method. When the steering angle of a steering wheel is detected at the time T0, a control device ...
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JP4122152B2 |
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JP4119342B2 |
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JP4119293B2 |
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JP4119294B2 |
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JP2008160921A |
To provide a stepping motor in which magnetoresistance of each phase is equalized.The stepping motor comprises a mold yoke 7 where the pole teeth K1 of a yoke 7aa and the pole teeth K2 of a yoke 7ab are coupled while being meshed through...
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JP4113687B2 |
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JP4113186B2 |
A stepping motor valve is provided for a refrigerator. The stepping motor valve includes a catching part and a valve body provided at an outer rim portion and a central portion of a bottom surface of a rotator of a stepping motor, respec...
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JP4113339B2 |
Disclosed is a three-phase toroidal coil type electric rotating machine including a rotor that comprises a cylindrical permanent magnet having M pairs of N-poles and S-poles that are alternatively arranged around a rotor axis, and a stat...
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JP2008151644A |
To provide a step motor which facilitates setting of a holding torque value, and design for minimizing a watch, and a step motor which facilitates design of shaft holes of gear trains and holes for lock pins, and is equipped with holding...
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JP2008154375A |
To reduce leakage flux between an axial end face of a rotor magnet and a stator yoke to enhance the motor torque of the stepping motor.A high flux density portion is formed in the rotor magnet 3 so that the portion extends from the outer...
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JP2008148494A |
To provide a magnet rotor capable of preventing degradation or burning of a whirl-stop part to avoid degradation in joint rigidity between a rotor body and a plastic magnet, and to provide an exhaust gas circulating apparatus using the m...
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JP3142776U |
A guiding structure includes a base and a guiding unit. The base has an opening, and an inner wall of the base, facing the opening, is formed with at least one first guiding element and at least one first restricting element disposed adj...
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JP2008148436A |
To provide a stepping motor which facilitates the connection work between a coil and a terminal pin.A housing 25 used in a stepping motor 1 has an end plate 30a which extends in a direction orthogonal to the axis L of rotation and to whi...
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JP4105878B2 |
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JP2008141836A |
To obtain a stepping motor in which a lager coil volume can be secured without changing the overall size, and excellent assemblability of a yoke to an air core coil is attained while eliminating the need for insulation treatment of the y...
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JP2008141931A |
To obtain a stepping motor in which a larger coil volume can be secured without changing the overall size, and excellent assemblability of an air core coil to a yoke is attained while eliminating the need for insulation treatment of the ...
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JP2008136319A |
To provide a motor in which disconnection and an insulating defect are less apt to occur in a hollow core coil and which has ample assembly workability, and to provide a manufacturing method of the motor.The hollow core coil 20 is fixed ...
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JP4098397B2 |
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JP4099643B2 |
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