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JP6587753B2 |
A torque motor has a mechanical reference member, an armature, and a field assembly. The field assembly includes field pole pieces defining a pole opening, and the armature is mounted to the mechanical reference member for rotation about...
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JP5098105B2 |
A pivot bearing device, particularly for a rotating circular table of a machine tool is provided, and includes a first device part, which is to be connected to an element that is to be rotatably mounted, particularly to the circular tabl...
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JP4516075B2 |
A magnetic bi-stable latch with an upper stator and a lower stator, a rotor between the upper stator and lower stator and adapted for rotation between a first latched position and a second latched position. Each of the stators is a magne...
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JP2009283946A |
To provide an improved torque motor to facilitate construction by a MEMS technique.The torque motor includes a base, four polepieces extending away from the base, the polepieces being separated from one another and being arranged at the ...
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JP4361930B2 |
A torque motor ( 20 ) has a base ( 21 ), four polepieces ( 22 A, 22 B, 22 C, 22 D) extending away from the base, the polepieces being separated from one another and being arranged at the corners of an imaginary polygon ( 27 ), each polep...
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JP4235486B2 |
A feature of the present invention resides in that when a value of a ratio of a central angle of an outer magnetic pole portion to a central angle of each magnetized pole of a magnet portion is referred to as Y, and a value of a ratio of...
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JP4233701B2 |
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JP4183761B2 |
PCT No. PCT/IB98/01361 Sec. 371 Date Jun. 28, 1999 Sec. 102(e) Date Jun. 28, 1999 PCT Filed Aug. 31, 1998 PCT Pub. No. WO99/13557 PCT Pub. Date Mar. 18, 1999An electromotive actuating device having a movable member and a stationary membe...
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JP4164297B2 |
A driving apparatus includes a rotatable rotor with a ring shape, a first magnetic pole portion, a second magnetic pole portion, and a coil for magnetically exciting the first magnetic pole portion and the second magnetic pole portion. T...
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JP4077630B2 |
An electromagnetic actuator for driving the shutter of a camera includes a rotor (10) magnetized with the N and S poles, and first magnetic pole parts (21, 31) and second magnetic pole parts (22, 32) that are disposed to face the outer c...
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JP4012170B2 |
An actuator maintains high efficiency, can react to an increase in pole, has a high part fit, and can be manufactured at low cost while it is thinned. The actuator includes a magnet which is formed in a ring shape, in which at least one ...
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JP3996414B2 |
An actuator apparatus, comprising a rotating shaft supported in a freely rotating condition, a rotor magnet consisting of a permanent magnet which is polarized at two poles and is fastened to the rotating shaft; means for defining a firs...
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JP3950756B2 |
To enable a state of a non-driving member interlocked with a rotation of a magnet to be set as three states by setting the rotating state of the magnet to the three states by switching a coil energizing control to a non-energizing, posit...
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JPWO2005057051A1 |
Provided are an electric actuator (10) and a control device thereof, which can quickly and smoothly switch the transmission torque, reduce the device cost, and make the device compact. A motor (40) that outputs rotational torque, a torqu...
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JP3887343B2 |
To provide a rotary actuator which can be displaced to an arbitrary rotary angle position in response to the amplitude and the energizing direction of an exciting current with a simple structure. The rotary actuator includes a stator hav...
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JP3887342B2 |
To realize displacing of a proportional rotary torquer to an arbitrary rotary angle position in response to the amplitude and the energizing direction of an exciting current with a simple structure. Salient poles 3a, 3b formed in a rotor...
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JP3865403B2 |
A throttle valve in a gas conduit (3), such as for example an intake of an internal-combustion engine, is pivotable from an idling position into operating positions by means of a valve shaft (5), the valve shaft (5) carrying an actuator ...
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JP3793965B2 |
To provide a stator core of a torque motor capable of improving assembling workability at manufacturing without causing reduction in generated torque. The stator core 11 of the torque motor comprises an arm 14 to which a coil 4 is insert...
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JP2006149193A |
To constitute an electric motor which can hold an actuator at its position, even in a state with a current does not flowing.In the electric motor, having a magnet system which has at least one permanent magnet and a rotor or the electric...
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JP2006074884A |
To provide a torque motor reduced in the length of a magnetic path from a coil part to a rotor, and thereby reduced in weight by the amount of the reduction of the length.The torque motor 10 comprises at least: the rotor 12 with a perman...
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JP3740381B2 |
To enable continuously drive force control of a movable member mounted to a member to be driven to be subjected by a control coil provided in a fixing member for reducing the weight of the movable member, and at the same time, to elimina...
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JP3725475B2 |
A novel low cost limited angle torque DC brushless servomotor is disclosed. The motor itself is a modified standard low cost DC brush motor which is modified by removing the brush assembly and substituting in its place an appropriately c...
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JP3684118B2 |
To simplify the control and to increase the stroke by respectively providing stators and a moving element with uneven parts vertically to the displacement direction, and engaging the uneven parts of the stators with the uneven part of th...
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JP3665710B2 |
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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JP3641075B2 |
To provide a rotary actuator in which a maximum rotational angle exceeding 180° can be attained and a rotor can produce an uniform torque while suppressing fluctuation during variation of the rotational angle. The rotary actuator compri...
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JP3635209B2 |
To provide a rotor magnet structure which has a single-phase claw pole structure, can secure detent torque and dynamic torque sufficiently, has characteristics with a wide rotation movement angle range, has stable characteristics and is ...
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JP3636437B2 |
To provide a limited angular displacement motor where a shaft has proper angle centering characteristics, without the assistance of independent magnetically centering mechanism. At a second axial direction position (24) of a stator (18),...
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JP3636435B2 |
To provide a torque motor which is easy to assemble and disassemble. This torque motor is provided with a base 12 supporting an armature 22 and having a plurality of through holes 14, 16, 18, 20, a lower pole piece 38 constituted of divi...
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JP2005020939A |
To provide a torque motor which can improve a size reduction and a weight reduction by constituting a rotor and a stator so that a necessary operating angle range may be satisfied in the torque motor having an operating angle range of le...
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JP3579272B2 |
To provide a toroidal core type actuator having a stator unit which is increased in winding density, is improved in methods of the terminal handling after winding, the positioning of the stator after winding, and the fixing of the same, ...
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JP2004257321A |
To provide an integrated circuit integral type actuator which can set the temperature of an integrated circuit to lower than an allowable temperature by suppressing the temperature rise of the integrated circuit.The integrated circuit in...
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JP2004207393A |
To provide a rotary solenoid that can be stabilized in performance.This rotary solenoid 10 is provided with a pair of first and second yokes 21 and 22 disposed to face to a rotor 24 in which a pair of magnetic poles are formed of permane...
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JP2004179422A |
To provide a rotary solenoid for reducing the rotational energy of a rotor with a simple structure so as to enhance the reliability and decrease the cost.The rotary solenoid 10 is provided with a rotary shaft 18, a permanent magnet 20 fi...
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JP2004517767A |
The present invention includes a device relating to a seat belt 1 adapted to a vehicle, having two belt fastening points 2a, 2b with respect to the vehicle chassis 3a, and a belt portion 2e with respect to the occupant's shoulder and / o...
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JP2004172353A |
To provide a rotary solenoid capable of obtaining a high torque and low power consumption by increasing a rotary angle.A stator 10 has a pair of opposing poles 11 extending inwardly in opposite directions. Exciting coils 12, 12 are wound...
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JP3524553B2 |
A method of manufacturing a direct drive servovalve including the steps of providing a completely packaged drive motor and a hydraulic stage positioning the drive motor upon the hydraulic stage and in engagement with a valve contained wi...
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JPWO2002043227A1 |
The electromagnetic actuator applied to the shutter device for a camera includes a rotatable disk-shaped rotor (10) magnetized to a different polarity and having an output unit (10b), and a third rotor (10) facing the outer peripheral su...
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JP3478479B2 |
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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JP3445173B2 |
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 o...
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JP2003522968A |
A galvanometer unit comprises a limited-rotation motor with a load element such as a mirror attached to a shaft extending from the motor. In a servo loop that controls the angular position of the mirror, a position-sensor attached to the...
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JP3431804B2 |
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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JP2003520553A |
A high precision torque motor, including a partial rotation drive suitable for use in a galvanometer scanner, where the rotor is supported within the stator and housing assembly on all ceramic ball bearings, including inner and outer rac...
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JP3415275B2 |
PURPOSE: To suppress increase of manufacturing cost while reducing the size by securing coils serving as a stator to the housing such that the coils face permanent magnets on the inside of a ring rotor, conducting each coil selectively t...
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JP3394776B2 |
PCT No. PCT/US93/01824 Sec. 371 Date Aug. 18, 1995 Sec. 102(e) Date Aug. 18, 1995 PCT Filed Feb. 26, 1993 PCT Pub. No. WO94/19914 PCT Pub. Date Sep. 1, 1994Apparatus (21) is described for reproducing low frequency sound in response to an...
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JP3394922B2 |
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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JP2607810Y2 |
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JP2002272053A |
To provide a rotary electric actuator to be attached to the surface of a support for industrial application, which has a built-in electronic apparatus being isolated from vibration by vibration isolator.The rotary actuator includes a sta...
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JP2002266919A |
To provide a shock absorber that is for a shaft.The shock absorber 10 includes a collar 32 having an opening 36 for receiving the shaft 18, and the opening of the collar and the shaft define a clearance in between. An axially offset pin ...
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JP2002139349A |
To make a body having mass reach target position/target angle in a shortest time.Subtraction for a current target angle held in a target angle register 72 and the next target angle ahead held in a register 74 is performed by a subtractor...
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JP2002514037A |
A low speed moving magnet motor (1) has a moving magnet (10) and a stationary coil (20) for carrying an electric current and disposed in relation to the moving magnet (10) such that a magnetic field generated when a current flows through...
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