Abstract: At least a rotor fixing portion and a bearing fitting portion are combined to form a hollow rotary shaft. The rotor of a rotary motor portion is fixed on the rotor fixing portion. A thrust radial bearing is fitted on the outer periphery of the bearing fitting portion and a screw nut is fitted to the bearing fitting portion. The rotor fixing portion and the bearing fitting portion are coupled with screw member(s) which are inserted into the hollow rotary shaft from one axial end of the hollow rotary shaft and axially extend inside the bearing fitting portion and the rotor fixing portion. A flange portion of the screw nut is fixed on an abutment portion of the bearing fitting portion in abutment with an end surface of an inner race of the thrust radial bearing that is located on the one axial end side.

Abstract: An electromechanical actuator includes a first system and a second system. The first system includes a first motor and a first movable element capable of being moved back and forth in an axial direction of a rod. The second system includes a second motor and a second movable element capable of being moved back and forth in the axial direction of the rod. The electromechanical actuator is capable of adjusting a stroke length which is a distance between the first driving section set to or in the proximity of an end portion of the first movable element and the second driving section set to or in the proximity of an end portion of the second movable element. The first movable element and second movable element are configured for back and forth movement in the axial direction of the common rod.

Abstract: An integrated actuator drive unit (ADU) assembly for an electric motor actuator is disclosed. The integrated ADU assembly may comprise at least one of an integrally formed ring gear, an integrally formed thrust bearing and integrally formed load cell. The integrated ADU assembly may comprise a portion of an electromechanical actuator. The electromechanical actuator may be utilized for aircraft braking systems.

Abstract: In order to achieve improvement in speed and torque of a rotating electric machine according to an inexpensive, simple, and highly reliable method, Provided is a rotating electric machine including: a stator; a rotor that is rotatably arranged with an intermediation of an air gap in a rotating shaft direction with respect to the stator; and a primary-side mechanism that rotates concentrically with a shaft center of the rotor. The primary-side mechanism includes: a fixed position rotating pulley that is arranged so as to be immovable in the rotating shaft direction; and a variable position rotating pulley that is arranged so as to be movable in the rotating shaft direction with respect to the fixed position rotating pulley. The variable position rotating pulley rotates and moves in an axial direction integrally with the rotor.

Abstract: An electromechanical actuator is provided whose structure is simplified and made small, and with which an output portion can be driven even if a jammed state occurs in a screw mechanism. An electromechanical actuator is configured that includes an electric motor having a first rotor portion and a second rotor portion capable of relative rotation with respect to each other, and a jam relief mechanism having a first conversion portion having a first screw mechanism capable of converting rotational force of the first rotor portion into thrust force and moving an output portion back and forth, a sliding support mechanism which can transmit the rotational force of the first rotor portion to the first conversion portion, and a second conversion portion having a second screw mechanism which moves the output portion back and forth together with the first conversion portion.

Abstract: A variable display device includes a display panel; a joint plate installed at a rear surface of the display panel and including a plurality of plates each configured to be rotated by a hinge; and a driving system installed at a rear surface of the joint plate and rotating the plurality of plates with respect to a normal direction to the joint plate, wherein the display panel is variably driven in a flat mode having a flat surface or a curved mode having a curved surface by the joint plate and the driving system.

Abstract: The base of an actuator housing 10 is arranged to face the side of a turbine housing, and a motor 16 is fixed to a motor support post that is protrusively provided toward the top of the actuator housing 10 such that the motor 16 is kept at a distance from the turbine housing.

Abstract: The invention relates to a drive device for a hatch of a motor vehicle, wherein the drive device comprises two drive sections that are linearly moveable relative to each other between a retracted position and an extended position, wherein the drive sections are spring biased against each other into the extended position by a spring arrangement, wherein an end stop is provided to limit the drive motion between the drive sections to the extended position. It is proposed that the end stop comprises a damping arrangement with a deformation zone, wherein during a drive motion into the end stop, depending on the speed of the drive motion, the damping arrangement damps the drive motion mainly based on plastic deformation of the deformation zone.

Abstract: In some aspects, the present disclosure provides a magnetic rack comprising a lateral movement structure and/or a longitudinal movement structure. In particular embodiments, the lateral movement structure and/or longitudinal movement structure move one or more magnets to or away from a reaction tube, in order to control the magnetic forces exerted on microbeads in the reaction tube. The microbeads are attracted onto the reaction tube wall, thereby facilitating separation of the microbeads from a solution in the tube. In particular embodiments, the magnetic rack is used to extract or purify nucleic acid from a sample.

Abstract: An actuator, a stator, a motor, a rotational-to-linear motion conversion mechanism, and a linear actuator are provided. The motor, the actuator, and the linear actuator at least include a screw shaft and a nut. The screw shaft is a rod-like member, and at least a part of the surface of the screw shaft has a thread. The nut is screwed onto the thread on the screw shaft, and moves the screw shaft in a linear motion direction that is a direction in parallel with a rotational center. The stator, the motor, the actuator, and the linear actuator can at least convert a rotational motion into a linear motion.

Abstract: During an inertial energy storage operation, electric power conversion at an inverter is controlled such that a direct current electric power from an electric power storage device is converted into an alternating current by the inverter so as to be supplied to stator windings, such that torque in the direction of engine rotation is applied to an output side rotor from a stator to rotatively drive the output side rotor in a state where power transmission from the output side rotor to a drive axle is stopped. During a cranking operation after the inertial energy storage operation, the electric power conversion at an inverter is controlled to permit application of the alternating current to rotor windings, such that a torque in the direction of engine rotation is applied to an input side rotor from the output side rotor, thereby rotatively driving an input side rotor to crank the engine.

Abstract: A downhole tool for positioning in a wellbore comprises a tool main body, an electric motor disposed within the tool main body, the motor comprising a rotor rotatably attached to a stator, and a linear actuator assembly disposed within the motor for transforming a rotary output of the motor into a linear displacement.

Abstract: An electromechanical actuator device (17) and method for use under water in petroleum activity, in which, via a transmission element (30, 34, 36), an electric motor (18), including a stator (20) and a rotor (22), is arranged to move an actuation element (36) between at least a first position and a second position, and in which the rotor (22) of the electric motor (18) surrounds and is connected to an actuator nut (30) which is in threaded engagement with the actuation element (36).

Abstract: A linear actuator is provided which includes a motor and a screw as an output shaft and in which the rotational movement of the motor is converted into the linear movement of the screw, wherein at least one retainer to hold a plurality of balls is disposed at the inner periphery of a hollow rotor of the motor, a ball screw is formed at the outer periphery of the screw, the balls are engaged with the ball screw such that the screw is set coaxial to the rotor, and wherein the screw provided with the ball screw is moved linearly by means of the rotation of the balls disposed circumferentially at the inner periphery of the rotor.

Abstract: An electro-mechanical linear actuator unit comprising an actuator housing that accommodates at least two electric drives, each of which, when actuated by a control device, sets an associated drive of a respective spindle drive into rotation for adjusting linear movement of the associated spindle drive in order to produce relative linear adjustment of a control rod. The two electric drives are located in the actuator housing in such manner that relative adjustment can be produced by simultaneous actuation of the two electric drives, as the sum of the adjustment movements of the associated spindle drives, or by actuating a single electric drive, as the adjustment movement of the associated spindle drive. A respective brake is provided, in an area of each of the two electric drives, which can be selectively actuated by the control device to then prevent the adjustment movement of the respective associated spindle drive.

Abstract: Hobby servo motor linear actuator systems are provided. In certain circumstances, a linear actuator system includes a lead screw attachment mechanism and a lead nut. The lead screw attachment mechanism is configured to be rotatably connected to an output shaft of a hobby servo motor assembly. The lead nut is configured to move linearly along the lead screw attachment mechanism as it is rotated. The system is optionally either open-looped or closed-loop. The lead screw attachment mechanism has an outer surface that can include multiple different types of threads such as, but not limited to, gear teeth and screw threads. The hobby servo motor assembly may include one hobby servo motor or multiple hobby servo motors that work together.

Abstract: An electric linear drive, in particular for adjusting moveably mounted parts of furniture used for sitting or lying down, includes a drive motor, a threaded spindle, a speed reduction gear arranged between the drive motor and the threaded spindle, a spindle nut placed on the threaded spindle, which can be selectively locked in the direction of rotation and, depending on the direction of rotation of the threaded spindle, moved in the axial direction of the threaded spindle. The linear drive has a lifting element for adjusting the moveable furniture parts, the lifting element being driven by axial movement of the spindle nut. Simple design, easy assembly and operation, and robust mounting of the driving parts are achieved.

Abstract: A linear actuator with an electric drive device includes a stator and a rotor, wherein the stator is arranged in a fixed location in a drive housing and the rotor is mounted for rotary motion relative to the stator and with a transmission arrangement which is arranged coaxial with an axis of rotation of the drive device to convert the rotary movement of the rotor into a linear movement, wherein a threaded spindle of the transmission arrangement is non-rotatably connected to the rotor and positively coupled to a spindle nut slidably accommodated in the drive housing and connected to a torque tube, wherein bearing means for a rotatable mounting of the rotor are provided in opposite end regions of the drive housing.

Abstract: A rotational-linear motion converter includes a cylindrical magnet rotor, a linear rail, a teeth row, and a magnet row. The magnet rotor includes a magnet row magnetized in a radial direction of the magnet rotor. The rail includes a plurality of projecting portions and recessed portions. The teeth row includes teeth and allows a magnetic flux flowing from the magnet row of the magnet rotor to pass between the magnet rotor and the rail. The magnet row includes magnets and is magnetized in an extending direction of the rail in order to align the magnetic flux flowing from the magnet row of the magnet rotor toward the projecting portions and the recessed portions of the rail. In the magnet row magnetized in the extending direction of the rail, the same polarity faces of adjacent magnets oppose each other in the extending direction of the rail.

Abstract: The invention relates to an electric motor/gear mechanism unit including a housing, an iron-free rotor winding rotatably arranged in the interior of the housing, a collector connected to the rotor winding, a rotor shaft extending through the collector, and a gear mechanism which is connected to the rotor shaft and which has an output shaft. The present invention is so conceived that the gear mechanism is produced from a non-magnetic material and arranged in the interior of the rotor winding.

Abstract: A linear actuator is provided that includes a housing having an input member supported for rotation therein. An output member travels linearly along the input member when the input member is rotated relative to the output member. A guide rail extends along an inner surface of the housing. The output member engages the guide rail to prevent rotation of the output member.

Abstract: An actuating device for a heating element valve has a drive motor with a motor shaft, an actuator, and a rotation-linear conversion drive. The conversion drive is coupled on the drive side to the motor shaft and on the output side to the actuator and converts a rotational movement of the motor shaft into a linear movement of the actuator. The rotation-linear conversion drive further has a cam disc on the output side which is provided on its outer circumferential periphery with a plurality of step segments each having a substantially constant distance from the axis of the cam disc. The step segments are connected via connecting segments with a variable axle spacing.

Abstract: An object of the present invention is to maintain a predetermined positional relationship between an outer pin holder and a housing in a speed reducer section B, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, and to eliminate rattling noise caused by a housing and the outer pin holder. An elastic member is disposed on one or both axial end surfaces of the outer pin holder, between the outer pin holder and the housing. As a result, even if there is an axial load exerted on the outer pin holder, the outer pin holder is always held at a predetermined position by restoring force from the elastic member(s), in a proper positional relationship with the housing.

Abstract: A drive train is used at least including an input shaft and an output shaft. A clutch member is rotatable by a clutch shaft about an axis of rotation. The clutch shaft is supported for lateral movement along the axis of rotation to move the clutch member to cooperate with the drive train at a first lateral position to cause the output shaft to turn and to move the clutch member to a second lateral position to disengage the output shaft from rotation of the input shaft. A permanent magnet is supported by one end of the clutch shaft and arranged for receiving an external magnetic biasing force along the axis of rotation to selectively move the clutch member between the first and second lateral positions. A traveling shaft can be used to support a selected gear for movement by the permanent magnet to implement transmission and reversing configurations.

Abstract: An oscillator typically includes several rotatable drive magnets and pivotable oscillating arms having respective follower magnets so that the drive magnets drive movement of the follower magnets to pivot the arms back and forth in an oscillating manner. A generating magnet or electrically conductive member may be mounted on each oscillating arm for producing an electric current in the electrically conductive member. Repelling magnets may be mounted on the oscillating arms with respective repelling magnets positioned to repel the first repelling magnet to limit pivotal travel of the oscillating arm.

Abstract: This motor/generator produces rotational torque and/or electrical energy employing a flexible magnetically permeable circular band as a rotor that in operation is in physical contact with the stator, arching and curving forward in response to advancing magnetic fields along the stator surface. The stator may be comprised of either a typical three-phase winding, or a series of magnetic actuators arranged in a toroid for which the rotor band acts as a continuous armature. The rotor rotates as follows: an actuator to the left or right of an active actuator is activated to pull a rotor arch down to the stator surface; as this occurs, the previously active actuator is turned off and that part of the rotor springs away; the rotor moves clockwise or counterclockwise as the arches of the rotor are advanced forward or backward, respectively. Differential rotor movement provides speed reduction and torque enhancement without gears.

Abstract: A linear actuator has a stator with two stator coils and pole plates forming stator poles. A rotor is rotatably mounted to interact with the stator poles. The rotor has a hollow cup shaped permanent magnet fitted to a screw shaft. An output shaft, which is co-axial with the rotor, is driven by the rotor through a screw connection. The rotor is supported by a single rotary bearing located within the magnet, axially between axial ends of the permanent magnet.

Abstract: A screw motor includes a stator, a rotor that is rotatably received in the stator and includes a rotor core, and a screw shaft that is coupled to the rotor core to contact the rotor core.

Abstract: A rotor of a motor capable of simplifying a manufacturing process and improving precision. The rotor includes a screw type of ball spindle, and a nut spindle that surrounds the ball spindle, is screwed onto the ball spindle, and has magnets attached to an outer circumferential surface thereof.

Abstract: A kinetic energy converter for converting linear motion into electrical energy has an outer body and an inner cylindrical body. The outer body and the inner body define a common central axis wherein the outer body is movable along the central axis with respect to the inner cylindrical body. A stator winding of a plurality of turns of at least one electrically conductive wire is disposed about an inner periphery of the inner body. A rotor having a central shaft and a plurality of magnets radially extending therefrom is rotatably disposed within the inner body and rotatable about the central axis. A helical blade extends from one end of the outer body to the rotor and is interengaged with the rotor wherein axial translation of the blade rotates the rotor about the central axis.

Abstract: An assembly is presented that can be used in an electric fireplace for providing rotational motion. The assembly can be used to drive an auxiliary axle with extensions to simulate a flickering flame. The assembly may include a direct current (DC) motor to create an initial rotational motion about an input axle at an input rate. The DC motor may be driven by a variable electric voltage that is variable. The assembly also includes a transmission to convert the rotational motion from the input axle at the input rate to an output axle at an output rate. The transmission uses pulleys, belts, and optionally gears to convert the rotational motion from the input rate to the output rate.

Abstract: A linear actuator comprises a reversible electric motor (2) which, via a transmission, is capable of driving a spindle (4) having a spindle nut (5) secured against rotation and comprises a power supply and a controller. The actuator moreover comprises a memory unit for collecting at least one set of data from the operation, indicating how long and how hard the actuator has worked. It is hereby possible to obtain an overview of the mechanical state of the actuator and thereby prevent unfortunate occurrences and accidents as a consequence of wear-out of the actuator.

Abstract: A linear motor includes a stator module, a rotor module and an extension rod. The stator module includes a first stator unit and a second stator unit. The first stator unit includes an upper end cap including an upper holder member and an upper bobbin integrally extended from the upper holder member. The second stator unit includes a bottom end cap and a second winding. The bottom end cap includes a bottom holder member and a bottom bobbin connected to the bottom holder member and abutted against the upper bobbin. The rotor module is rotatably mounted in the stator module. The extension rod is linearly movably mounted in the stator module. The upper bobbin is integrally extended from the upper holder member. The fabrication of the linear motor is simple, ensuring a high level of precision.

Abstract: Hobby servo motor linear actuator systems are provided. In certain circumstances, a linear actuator system includes a lead screw attachment mechanism and a lead nut. The lead screw attachment mechanism is configured to be rotatably connected to an output shaft of a hobby servo motor assembly. The lead nut is configured to move linearly along the lead screw attachment mechanism as it is rotated. The system is optionally either open-looped or closed-loop. The lead screw attachment mechanism has an outer surface that can include multiple different types of threads such as, but not limited to, gear teeth and screw threads. The hobby servo motor assembly may include one hobby servo motor or multiple hobby servo motors that work together.

Abstract: A threaded rod reciprocation outer rotor direct drive mechanism is provided. A threaded rod is coaxially screwed in a threaded bush. The threaded bush directly serves as the rotor of the outer rotor torque motor. Accordingly, the blind spot of the conventional technique is overcome to reduce the number of the components and minify the total volume and simplify the assembling and processing procedure.

Abstract: A device for finish-machining of the optically effective surfaces of, in particular, spectacle lenses has a spindle shaft, which has a tool mount section and which is mounted in a spindle housing to be rotatable about a workpiece rotational axis (A). An electric rotary drive has a rotor and a stator by which the spindle shaft operatively connected with the rotor is drivable to rotate about the tool rotational axis. An adjusting device axially displaces the tool mount section with respect to the spindle housing in the direction of the tool rotational axis (linear movement Z). The rotor and the stator are arranged coaxially with the spindle shaft, wherein at least the rotor together with the spindle shaft is axially displaceable with respect to the spindle housing in the direction of the tool rotational axis by the adjusting device.

Abstract: A linear actuator having an output shaft with a long moving distance is provided. A linear actuator includes a rotary shaft, a motor portion having a rotor and a stator, a ball screw mechanism including a ball screw nut fixed to a first end of the rotary shaft and a ball screw, a casing assembly including a first end bracket and a second end bracket, an electromagnetic brake device including a rotary brake disc, a stationary brake disc, and an electromagnetic coil, and a brake cover for covering the electromagnetic brake device. The electromagnetic brake device has a hollow structure allowing a second end of the rotary shaft to pass therethrough.

Abstract: Provided is a linear and rotary actuator capable of bearing moment and load from a movable body and downsizing its radial dimension. A spline shaft is held in housings to be movable linearly in the axial direction and rotatable about the axis. The spline shaft is connected to a mover shaft of a linear motor. The spline shaft is surrounded with a hollow rotor of a rotary motor. The rotor is connected to a spline nut which transmits rotation of the rotor to the spline shaft by rotating together with the rotor and allows linear movement of the spline shaft. The rotor of the rotary motor is rotated by a stator of the rotary motor. The spline nut, the stator of the rotary motor and a stator of the linear motor are arranged in this order from an end of the spline shaft and mover shaft along the axial direction.

Abstract: A contactless generator includes a generating module and a magnetic module. The generating module includes an energy converter and a rotator. The rotator has a surface and mechanical energy when rotating and is rotatable relative to the energy converter. The magnetic module is mounted on the surface of the rotator, aligned with the energy converter, and produces a intrinsic magnetic field. The intrinsic magnetic field is subjected to a contactless active force from an external contactless moving metallic object and drives the rotator to rotate. The energy converter converts mechanical energy of the rotator when rotating into electricity by a converting means.

Abstract: A permanent magnet is rotated about an axis extending between opposing north and south poles. The magnetic field of the rotated permanent magnet interacts with magnetic fields of permanent magnets carried by a shuttle for repelling and attracting the fixed permanent magnets, and providing a linear reciprocating movement of the shuttle responsive to the favorable rotary motion of the rotated permanent magnet where the force of the linear motion is captured by an energy storage device.

Abstract: A toothbrush drive includes a first drive component for generating a magnetic field and a second drive component driven in both a translational and rotational manner under the influence of the magnetic field. A transmission element is deflected out of a predetermined position for transmission of both translational and rotary movement of the second drive component. The deflection of the transmission element varies along its longitudinal axis. A transmission element can be deflected out of a predefined position for transmission of a translatory movement and a rotational movement of the second drive component to the brush element along a longitudinal axis of the transmission element. The deflection of the transmission element out of the predefined position is varied along the longitudinal axis of the transmission element.

Abstract: A dynamically induced magnetic hysteresis apparatus is described which allows efficient adjustable power coupling without direct mechanical attachment or linking. Adjustment of spatial and penetration gaps are adjusted to vary the ratio of rotation.

Abstract: There is provided an actuator including a motor and a case adapted to house the motor. In the actuator, an output shaft of the motor is supported by a structured configured such that an elastic member is disposed between the case and at least one end of the output shaft, wherein the elastic member is in contact with a portion of the case in an engaging manner whereby the elastic member is prevented from shifting relative to the case in the rotation direction of the output shaft, and also wherein the elastic member is in contact with a portion of the motor in an engaging manner whereby a body of the motor is prevented from shifting relative to the elastic member in the rotation direction of the output shaft.

Abstract: A motor is disclosed, the motor including a housing, a stator mounted on the housing, and including a stator core having a plurality of teeth, an insulator and a coil, a rotor core rotatatively disposed at a center of the stator and centrally having a space unit, and a magnet module mounted on a surface of the rotor core, wherein the magnet module includes a plurality of magnets each having a predetermined size, and a guide plate having an embossed unit accommodated by the plurality of magnets and attached to an inner surface of the magnet.

Abstract: An electromechanical device for driving and/or braking a shaft (1) includes an electric motor having a rotor (2) that is rotationally fixed to the shaft (1), and a stator (4) supported in a housing (3) around the shaft (1) with a rotational degree of freedom in the peripheral direction in the direction of brake actuation. The stator (4) is operatively connected to the brake pad (7) by a device (5) that converts rotational movement of the stator (4) into axial movement of at least one brake pad (7) that is supported in an axially movable fashion such that, when the electric motor is operated as a generator, the stator (4) is rotated relative to the housing (3) by torque arising between the rotor (2) and the stator (4), such that the brake pad (7) is pressed by the device (5) against the brake disc (8).

Abstract: A device includes a first magnet, a second magnet, and a coil. The first magnet is constrained to move in substantially-linear motion. The second magnet is mounted to move in rotational motion. The first and second magnets are positioned so the substantially-linear motion of the first magnet causes rotation of the second magnet. The coil is adjacent the second magnet, and rotation of the second magnet induces a current in the coil.

Abstract: The invention relates to a linear actuator for adjusting furniture components relative to each other, where the linear actuator displays a screw jack with a guide section and a sliding element guided on the guide section, as well as a drive with an electric motor for driving the screw jack, and an electrical connection displaying a connecting cable for controlling the electric motor and/or supplying it with power.

Abstract: A spindle motor includes a stationary portion and a rotating portion including a seal defining portion. The stationary portion includes a shaft portion, an annular member fixed to an upper portion of the shaft portion in, for example, a tight-fitting condition, and a cap member. A radially inner end portion of the cap member is fixed to each of the shaft portion and the annular member preferably through, for example, an adhesive. An upper seal portion, in which a surface of a lubricating oil is arranged, is defined in an upper seal gap defined between an outer circumferential surface of the annular member and an inner circumferential surface of the seal defining portion. The cap member is arranged to cover an upper side of the upper seal portion.

Abstract: There is provided a mechanism for converting rotary motion into linear motion in which high positioning accuracy can be obtained in mutual conversion between rotary motion and linear motion. The mechanism includes a plurality of rollers having a roller annular groove member and a pair of thrust bearings, a thrust bearing portion that is convex shaped and is held between the pair of thrust bearings on an outer surface of an end of the roller shaft, a step surface that is disposed on an inner surface of the roller annular groove member and facing to the thrust bearing portion putting one of the pair of thrust bearing in between, a thrust facing member that is in mesh with an inner surface of the roller annular groove member and is facing to the thrust bearing portion putting the other one of the pair of thrust bearing in between.

Abstract: An alignment stage including: a base plate; one or more X direction thrust generation guide mechanisms for generating thrust and performing guidance in the direction of a straight line X; a pair of lower plates disposed above the X direction thrust generation guide mechanisms; a pair of upper plates provided corresponding to the lower plates, respectively; a pair of rotatable bearings disposed between the lower plates and the upper plates; one or more Y direction thrust generation guide mechanisms for generating thrust and performing guidance in the direction of a straight line Y perpendicular to the straight line X; and a table plate disposed above the Y direction thrust generation guide mechanisms. With this configuration, it is possible for the alignment stage to be compact and easy to assemble.