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JP2000240474A |
To prevent runaway of an engine due to circuit trouble by regulating the driving range of a throttle valve driven by a first driving means consisting of an electrode actuator to a prescribed low opening range by a second driving means fo...
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JP2000232742A |
To provide a torque motor which can be assembled easily and has a smooth flat torque characteristic. Outer peripheral circular arcs 42b and 43b of permanent magnets 42 and 43 are made off-centered from a rotor core 41 by a distance (d) a...
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JP3075580B2 |
A fluorine-containing cation exchange membrane for electrolysis, which comprises a first layer of a fluorine-containing polymer having cation exchange groups and reinforced with a porous base material and a second layer of a fluorine-con...
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JP2000224830A |
To provide a rotor magnet structure which ensures detent torque sufficiently and has characteristic of wide range of rotating operation angle, in a single phase structure actuator. An armature 9 is constituted of stator yokes 2, 4 and a ...
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JP2000184627A |
To increase the wiring density of a stator coil and improve the ease of wiring work by disposing a plurality of phase separation members, consisting of non-magnetic material uniformly so as to be spaced from each other on the peripheral ...
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JP2000179730A |
To regulate a flow rate in low costs and with high accuracy.In a device formed in such a constitution that a valve is rotationally driven by a torque corresponding to an output current value of an actuator driving circuit on the basis of...
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JP2000161086A |
To make a motor-driven throttle assembly compact and lightweight, to improve responsiveness and to dispense with calibration after installation.A throttle valve assembly 110 is provided with a throttle shaft 18 with a part extended outwa...
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JP2000152590A |
To manufacture a high performance rotary electromagnetic actuator having a finite stroke at low cost by coupling a fixed part comprising a stator magnetic circuit having 2N poles (N is an integer) and an exciting coil with a movable part...
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JP2000152533A |
To provide a torque motor having a flat torque characteristic. A rotor 41 comprises a rotor core 42 and magnet group 44 and 45 provided on the outer periphery of opposite side of the radial direction of a rotor core 42. Recesses 43 axial...
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JP2000152697A |
To provide a torque motor for obtaining smooth torque characteristics, without generating torque ripples. If a current is attempted to be controlled to develop a nearly constant torque within the specific rotary angle range of a rotors a...
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JP2000152587A |
To provide a torque motor with flat torque characteristics. Magnet groups 43 and 44 are respectively composed of a plurality of flat plate magnets 43a and 44a which have identical dimensions and are bonded to the outer circumference of a...
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JP2000139067A |
To provide a torque motor capable of decreasing the length of a conductor to the cross section of the core member of a coil part. A torque motor 20 is provided with a rotor 30, a stator core 40, and a coil. The cross section of the iron ...
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JP3041675B2 |
To provide an oscillatory motor in which the rotational angle of the rotor can be detected accurately. A rotor 1 is a two pole magnet in the radial direction and comprises a semitubular magnet. Drive coils 5a, 5b are wound uniformly arou...
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JP2000116095A |
To provide throttle equipment which can cause a vehicle to run at a specified speed for evacuation, when the vehicle has failures.A coil section of a torque motor is made by winding a primary coil 52 and a sub-coil 53 around an iron core...
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JP2000504496A |
(57) It is an electric actuator (11) equipped with the 1st actuator object (13) of a summary, and the 2nd actuator object (17) which can rotate to the above-mentioned 1st actuator object (13) around a rotational axis line (19). One actua...
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JP2000092808A |
To provide a torque motor which can surely stop at a prescribed rotational angle when the motor is not energized. The edges of the magnetic poles of a second stator 60 are formed at positions where the edges are shifted from the edges of...
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JP2000074944A |
To provide a movement in a structure where coil winding for a coil can be easily wound around a coil bobbin uniformly without any slack and damage, the entire part can be made compact, and assembly can be made easily. A pair of inner bob...
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JP2000078822A |
To provide a torque motor which has flat torque property. For the teeth parts42 and 43 of a stator core 40, ramps 45 and 44 are made at the stator core 40 so that the length may be gradually increasing in axial direction of the rotor fro...
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JP2000069734A |
To provide a method of detecting a coating film and an ion implantation device used for the method. A DC torque motor 10 has a stator 24 which is attached to a base 12 in a cantilever manner and a cup-shape rotor 56 coupled with the stat...
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JP2000060176A |
To generate flat state in the torque characteristic of a brushless motor. When the number of poles (number of slots) of a stator is 6 and a number of poles (number of permanent magnets) of a rotor is 8 in a three-phase brushless motor, t...
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JP2000041372A |
To improve the responsiveness of a DC torque motor by giving such angle-torque characteristics that the positive peak torque of the motor is distributed unevenly on the smaller angle side in the operating angle range of the motor, and th...
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JP2000032731A |
To provide a torque motor and a fluid pressure controller, capable of attaining size reduction, sufficient torque characteristics, and easy assembly. This torque motor 12 includes a yoke 24 having lower yokes 18, 20 and an upper yoke 22,...
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JP2000014063A |
To provide a torque motor which can surely fix and protect the permanent magnet of a rotor with a simple structure. This torque motor is provided with a cover 35 made of a metal of magnetic material such as iron, around a rotor. The cove...
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JP2000014062A |
To provide a torque motor which can fix and protect the permanent magnet of a rotor with simple structure. This torque motor is provided with a cylindrical cover 35 such that it covers the permanent magnets consisting of permanent magnet...
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JPH11356029A |
To make it possible to detect the present position of a driven member with accuracy, by calculating the position of the moving member from a magnetic flux density detected by a magnetic flux density detecting means and a magnitude of cur...
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JPH11341774A |
To provide a minimum mass of electric torque motor which is capable of giving adequate torque for application to the throttling of an engine, and the manufacture cost of which is reduced. A torque motor 10 has a rotor 15, which has a plu...
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JPH11341873A |
To provide a method for amplifying an output torque by an electric torque motor of a system, such as vehicle electronic throttle control system or the like. When a throttle plate T of an electronic throttle system and its periphery are f...
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JPH11313472A |
To provide a torque motor which prevents the detachment of a permanent magnet, without increasing the number of item parts. A rotor 40 is provided with a rotor core 41 and permanent magnets 47a, 48a arranged on the rotor core 41, The rot...
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JPH11299208A |
To provide a torque motor with a flat torque characteristic. Of the permanent magnets 43a and 44a, arranged on the outer periphery of a rotor core 42, the three magnets 43a and 44a in the first half of rotating section in which the opene...
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JPH11299209A |
To reduce the number of parts used in a torque motor and to surely stop the rotor of the motor at an intermediate position, when the conduction to the coil section of the motor is turned off. A rotor 41 is constituted of a rotor core 42 ...
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JPH11285221A |
To provide a torque motor which is capable of staining smooth torque characteristics without generating torque ripples. One of the poles of a rotor 41 is formed by a group of magnets 43, 46, which consists of a plurality of flat plate ma...
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JPH11266575A |
To provide a torque motor for preventing a permanent magnet from dropping as well as for reducing its manufacturing cost. A rotor 30 has a rotor core 31 and two permanent magnet groups fixed to an outer periphery of the core 31 with an a...
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JPH11252848A |
To improve reliability of a positioner by disposing walls covering the outside of an armature which passes through a coil case or a coil case cover, at the coil case and coil case cover, respectively. In this torque motor, partition wall...
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JPH11252888A |
To prevent the stress of a horseshoe-shaped magnet from being exerted on laminated yokes, by forming projected bodies on a coil case and a coil case cover, bring the projected bodies into contact with the bent portion inside the magnet, ...
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JPH11206093A |
To increase a torque developed in the later period of rotation. A stator core 45 is formed of tooth parts 46 and 47 which surrounds the outer circumference of a rotor 41 and used as a pair of poles, and an arm unit 51. If an angle betwee...
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JPH11206092A |
To widen an angle range in which a torque is developed, while not generating torque ripples. A rotor 41 consists of a core 42 and permanent magnet groups 43 and 44 which consist of 6 flat plate permanent magnets 43a and 44a respectively ...
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JPH11146625A |
To provide a torque motor which does not allow torque ripples to be produced and is capable of generating stable torque. A plurality of plate magnets 43a, 44a of the same dimensions are placed on the circumference of a rotor core 42 in s...
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JPH11146624A |
To provide a motor which makes torque on the rotor roughly constant within the rotating range of the rotor. The rotor 30 is contained in a stator 40 so as to rotate freely, and consists of a rotor core 32, permanent magnets 33, 34 fixed ...
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JPH11505998A |
(57) Summary book invention relates to the electromagnetism actuator to which between four stable positions in case there is no current, and these stable positions by the action of current is moved quickly. An actuator consists of the th...
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JPH11504100A |
(-- 57) summary -- the drive motor and fluid pressure stage which were packed completely, use and Place a drive motor on a fluid pressure stage, and engaging of clutch is carried out to the valve in a fluid pressure stage, The manufactur...
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JP2880280B2 |
An angular single-phased electromagnetic actuator including a stator structure constituted of a first magnetic stator part and a second magnetic stator part connected exclusively by a non-magnetic spacer. A movable member including a thi...
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JP11053749A |
To manufacture an objective lens driving device capable of preventing the spreading of self welding wire even in the case of a dividing coil using the self welding wire having a heat welding layer set to a low melting temperature. In thi...
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JP11055907A |
To contrive weight and cost reduction by reducing the volume of a magnet. For this electromagnetic driver, all of the moving member are magnetized in the same direction in the case that the moving material 1 includes one or more magnetiz...
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JPH118963A |
To impart high stability for the operating position of a rotor by providing a stator with means for urging the rotor electrically and controlling electromagnetic torque and magnetostatic torque according to different functions, depending...
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JPH10288054A |
To provide a throttle valve control device capable of manufacture easily and at low cost. Each of magnetic poles 46 and 47 is formed with a group of magnets each of which comprises four flat plate-shaped permanent magnets 46a and 47a, an...
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JP2814146B2 |
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JP2792970B2 |
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JPH10508408A |
(57) Summary book invention relates to the actuator which has a coil means to cooperate with a permanent magnetism object (1) and this magnetic body. This magnetic body can revolve around the axis of rotation (7), for example between two...
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JPH10185932A |
To provide an oscillatory motor in which the rotational angle of the rotor can be detected accurately. A rotor 1 is a two pole magnet in the radial direction and comprises a semitubular magnet. Drive coils 5a, 5b are wound uniformly arou...
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JPH10178769A |
To enable a U-shaped stator having a small diameter and a light weight to generate a very high overload torque in a short period by constituting the stator in such a way that the first section of the stator forms the yoke of the stator a...
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