Abstract: In the field of electrical linear motors, it is known to make more than one laminate core (20) having teeth (22), wherein grooves (24) are designed between the teeth (22). Until now, coils assigned to the laminate core are arranged on each laminate core. The invention is based on this background. Instead, each coil (18) is arranged with a first section in a groove (24) of a first laminate core (20a) and with a second section in a groove (24) of a second laminate core (20b). The coils are consequently wound in an entirely different direction and now lie in a plane perpendicular to the direction of movement of the secondary part of the electrical linear motor.

Abstract: A cooling device of a linear motor to cool a primary side of the linear motor including an iron core and a coil accommodated in slots of the iron core, including an elongate cover covering coil end portions exposed from both side faces of the iron core in a longitudinal direction, an air channel serving as blower for forcing a current of cooling air inside the cover, and a partition plate dividing the inside of the cover into upper and lower spaces. It is configured in such a manner that the upper space divided by the partition plate is used as a ventilation portion through which a current of cooling air is forced and the lower space is used as a cooling portion in which the coil end portions are accommodated and cooled. A slit is formed almost along a full length of the partition plate on a side closer to the iron core for bringing the ventilation portion and the cooling portion into communication with each other, and a vent is provided in a lower portion of the cooling portion.

Abstract: An acceleration generator 20 includes: a moving member (21, 25) that performs a periodic translational motion along a particular straight line; a first operating part (24) that applies a first force that varies in magnitude depending on the relative position thereof with respect to the moving member to the moving member in a direction parallel to the particular straight line; and a second operating part (27) that applies a second force that varies in magnitude depending on the relative position thereof with respect to the moving member to the moving member in a direction parallel to the particular straight line. The moving member performs a translational motion in which the acceleration thereof in the positive direction and the acceleration thereof in the negative direction are asymmetric in one period.

Abstract: Especially for use in the semiconductor industry, a displacement device (701) is disclosed comprising a first part comprising a carrier (714) on which a system of magnets (710) is arranged according to a pattern of row and columns extending parallel to the X-direction and the Y-direction, respectively. The magnets in each row and column are arranged according to a Halbach array, i.e. the magnetic orientation of successive magnets in each row and each column rotates 90° counter-clockwise. The second part comprises an electric coil system (712) with two types of electric coils, one type having an angular offset of +45°, and the other type having an offset of ?45° with respect to the X-direction. The first part (714, 710) is movable over a range of centimeters or more with respect to the stationary second part (712). For high precision positioning of the first part, an interferometer system (731, 730) is provided.

Abstract: Increasing in size of a reaction force cancel system is suppressed. The reaction force cancel system is provided in a stage device including: a surface plate having a plurality of plate surfaces with different heights from each other, and installed on a floor via a vibration-isolating spring; and stages disposed on the plate surfaces respectively, and moving on the plate surfaces, and cancels reaction forces generated on the surface plate upon movements of the stages. In addition, the reaction force cancel system includes a first and a second reaction force canceling actuator that apply counter-thrusts to the surface plate, and a control section that controls the magnitudes of the counter-thrusts. In the reaction force cancel system, the heights of action points of counter-thrusts in the surface plate are different from each other, and the control section controls the counter-thrusts so as to counterbalance the reaction forces as resultant forces and resultant moments.

Abstract: An electromagnetic force driving actuator and a circuit breaker using the same is disclosed. The actuator comprises a casing that forms two paths having a certain length in longitudinal direction, and forms a middle wall by the two paths; a main magnetic field generation element that is allocated on the both face wall of the two paths of the casing; and a moving element that, as the middle wall is located in the center, a coil, which is bound in the orthogonal direction to longitudinal direction of the paths, is in a body that its left and right sides passes through the paths and its front and back side are exposed to outside, when forward direction or reverse direction current is provided in the coil, moves forward and backward along the longitudinal direction of the paths.

Abstract: A voice coil motor type focusing actuator, which includes a fixed unit, the fixed unit comprises a bracket which is formed by plastic injection molding to wrap a metal part, and a plurality of magnets mounted in the bracket at a plurality of sides. A movable unit, the movable unit comprises a lens holder movably mounted inside the bracket and a coil mounted on a plurality of sides of the lens holder corresponding to the magnets. And a resilient holding unit connected between the fixed unit and the movable unit to hold down the movable unit on the fixed unit.

Abstract: The aim of the invention is to simplify and to secure the mounting and adjusting of sensors on built-in motors. As a result, a direct drive built-in motor is equipped with a first motor component (2) which comprises at least one motor mounting element (21) for securing the first motor component (2) to a first machine part (4), and a second motor component which cooperates with the first motor component (2) for carrying out an opposite-sided movement. Also, a sensor device (5, 6) can be secured to the first motor component (2). Said sensor device comprises at least one sensor mounting bore (61) which is arranged in a predetermined manner through the motor mounting part and can be connected to the first machine part Also, the position and/or orientation of the sensor device (5, 6) are predetermined in a mounted state on the first machine part (2).

Abstract: An acceleration generator 20 includes: a moving member (21, 25) that performs a periodic translational motion along a particular straight line; a first operating part (24) that applies a first force that varies in magnitude depending on the relative position thereof with respect to the moving member to the moving member in a direction parallel to the particular straight line; and a second operating part (27) that applies a second force that varies in magnitude depending on the relative position thereof with respect to the moving member to the moving member in a direction parallel to the particular straight line. The moving member performs a translational motion in which the acceleration thereof in the positive direction and the acceleration thereof in the negative direction are asymmetric in one period.

Abstract: In a linear motor, the stators and sliders are arranged to fill a predetermined relationship. In one configuration, two stators each include a plurality of stator blocks arranged in a moving direction of sliders so that projecting poles are maintained at predetermined intervals. Boundary surfaces are formed in adjacent stator blocks so as to be displaced relative to one another between the two opposite blocks by a distance Ld in the moving direction of the sliders. When a distance between end surface of the slider blocks is defined as L and the overall length of one stator block is defined as L0, the components are arranged such that Ld>L/3 and (L0?Ld)>L/3.

Abstract: The invention relates to a synchronous linear motor comprising a mobile primary part (3) and a fixed secondary part (1, 2). The primary part (3) comprises conductive coils (4) and permanent magnets, and the secondary part (1, 2) has a ferrous structure comprising teeth (6, 7) which are oriented towards the primary part (3). The secondary part (1, 2) comprises at least one active region (2) which is characterized in that all of the teeth (7) of an active region (2) also comprise conductive coils (5).

Abstract: An impact driver for driving elongate objects into a body has, a chassis, a ram supported by the chassis in a manner allowing rectilinear movement of the ram relative to the chassis between two limits, and a linear induction motor. The linear induction motor has a stator mounted to the chassis and positioned to operatively interact with a linear induction motor reaction member being of a conductive metal material. The reaction member is carried by the ram in a manner to allow the ram to oscillate between the two limits by the stator of the linear induction motor. A first limit being a retracted position and a second limit being an impact position to which the ram is accelerated from the retracted condition by the stator and at which the ram imparts an impact force on the elongate object in the elongate direction thereof.

Abstract: By reviewing a material of a forcer housing and an assembly structure of a coil member with respect to the forcer housing, a thrust force is increased, an optimum shape can be easily given to the forcer housing depending on a purpose of use, and a linear motor can be manufactured at low cost. The linear motor includes a magnet rod composed of a large number of magnetic poles arranged with predetermined pitches along an axial direction and a forcer having a through-hole into which the magnet rod is loosely inserted and reciprocatable relatively to the magnet rod according to an applied electric signal. The forcer is composed of a forcer housing in which the through-hole is defined and a coil member which is arranged on an inner peripheral surface of the through-hole of the forcer housing and to which the electric signal is applied. The forcer housing is formed by mold forming with an insulating nonmetal inorganic material.

Abstract: A linear motor includes a primary part arranged as a guideway stator and at least one secondary part that is movable with respect to the primary part, the at least one secondary part having device(s) for controlling the generation of a magnetic field, causing its motion, in the primary part. It is possible to avoid costly control devices for the application of current to the stator.

Abstract: A camera module includes a lens unit, a magnet, a stator and an elastic element. The stator includes an upper coil seat with an upper coil wound therearound and a lower coil seat with a lower coil wound therearound. The upper and the lower coils establish an induced magnetic field when electric currents are applied thereto. The induced magnetic field interacts with the magnet to generate a magnetic force driving the lens unit into a telescopic movement. The elastic element includes a plurality of ribs. Each rib includes a fixed end connected with the stator and an opposite movable end. The moveable end moves together with the lens unit with respect to the fixed end to cause the ribs to deform and generate an elastic force. The lens unit stops at a focal position when the magnetic force and the elastic force come to a balance.

Abstract: A magnetic circuit is made by magnetically attracting a permanent magnet segment of a partially circular arc in cross section to an outer peripheral surface of a center rod, causing the magnet segment in a magnetically attracted state to face a yoke member, using a nonmagnetic supporter to regulate the magnet segment in position, extracting the center rod from the magnet segment in a position-regulated state, and magnetically attracting and fixing the magnet segment to the yoke member.

Abstract: A recoilless voice coil actuator and method having flexures connected to both the magnet and the voice coil allowing independent movement of both the magnet and the voice coil in the direction of actuation. The stiffness or resistance to movement of the flexures is selected so that the natural frequencies of the magnet and the voice coil along the direction of actuation are substantially the same.

Abstract: A linear motor with an integrated guidance comprising a base plate comprising at least two side walls, and a travel plate guideably connected to the base plate in a linearly movable manner, wherein the travel plate comprises at least two rails and is connected to a plurality of rollers, wherein the plurality of rollers travel on the at least two rails.

Abstract: A radiator for a linear or curved mobile motor for removing the thermal distortion of a mover and a transporting member of a linear or curved mobile motor, and a high-accuracy, high-reliability linear or curved mobile motor using it. The linear or curved mobile motor includes a field pole having a plurality of permanent magnets with different magnetic poles arranged alternately along a field yoke, and an armature arranged opposite to the field pole via a magnetic gap and formed by winding a single or a plurality of coils around a core. The field pole is used as a stator and the armature being used as a mover that is relatively moved along the longitudinal direction of the stator.

Abstract: An electromagnetic transmission device. A guide bar connects to a fixed base and includes magnetic-permeable material and a first central height plane. A coil connects to the fixed base. A support base movably fits on the guide bar. An annular magnetic member connects to the support base and is surrounded by the coil. A magnetization direction of the annular magnetic member is perpendicular to a moving direction of the support base and annular magnetic member. The annular magnetic member includes a second central height plane. The coil interacts with the annular magnetic member to generate a first force. When moving to separate the second central height plane from the first central height plane, the annular magnetic member interacts with the guide bar to generate a second force, driving the support base and annular magnetic member to move along a direction perpendicular to the magnetization direction of the annular magnetic member.

Abstract: A system and method for a multiple degrees of freedom motor includes an output shaft. A stator is provided having at least a first lamination stack. Each lamination stack has an interior curved surface. The lamination stacks are disposed adjacent the output shaft. A rotor is fixed to the output shaft and movably supported adjacent the stator with an air gap disposed between the rotor and the stator. The rotor includes at least one magnet disposed thereon. The magnet is movable along the interior curved surface of the lamination stacks in directions defining at least a first degree of freedom. The rotor is biased toward a base position along at least one degree of freedom.

Abstract: A vibration actuator having a simple small-sized structure capable of obtaining vibration enough to sense without use of suspension or the like is provided. Amplitude of a moving part is restrained by a magnetic gap formed by cup-shaped yokes which are formed to interpose a magnet, and the moving part is vibrated without collision of the moving part with an inner wall of a fixed part. Therefore, magnetic force exerted between the moving part and the fixed part is allowed to function as a suspension. Therefore, it is possible to solve a problem, that is, reduction in the amplitude caused from the suspension. In addition, an air damper structure that air in upper and lower space of the moving part is used as a damper is provided, so that it is possible to obtain a wide frequency band.

Abstract: An electromotive machine (200) comprises a stator (210), comprising a plurality of primary windings (215; 500; 520; 540), and a rotor (220). The primary windings (215; 500; 520; 540) are concentrated windings. The rotor (220) comprises secondary windings (230; 300; 400).

Abstract: A linear motor comprising a mover part including; an armature module having an I shaped magnetic iron core and an armature winding of one kind wound on the periphery of the I shaped magnetic iron core through an insulating material. A non-magnetic material holder on which a plurality of armature modules are arranged in a stroke direction is provided. A base upper plate and a base lower plate are provided for attaching the non-magnetic material holder in upper and lower parts respectively. A stator part includes a plurality of field permanent magnets opposed to the I shaped magnetic iron cores through magnetic spaces and field yokes for supporting the field permanent magnets. The non-magnetic material holder has at both end parts thereof through holes for inserting bolts corresponding to the forms and the arranging pitches of the I shaped magnetic iron cores.

Abstract: To provide a less expensive and high-efficient free-piston Stirling cycle machine with an outer diameter of entire machine being relatively small. In a Stirling cycle cooler as a free-piston Stirling cycle machine including a cylinder 7, a piston 18 which is reciprocable inside said cylinder 7 and an electromagnetic driving mechanism 19 for reciprocating said piston 18, said electromagnetic driving mechanism 19 is comprised of a mover 20 and a stator 35, said piston 18 and said mover 20 formed by disposing a permanent magnets 24 outside an inner yoke 23 made of magnetic flux conducting material are disposed in an axial alignment, and said stator 35 and said cylinder 7 are disposed in an axial alignment.

Abstract: In a linear motor (1), the detent force is reduced by the height of the iron poles (522) being selected differently in the two outer regions of the coil set, preferably by a gradual reduction of the height of the iron poles (522) towards the ends of the stator (2). In combination with a slight inclination of the magnets, the detent forces are further minimized, with negligible losses of the propulsive force. The exact dimensioning of the iron poles (522) is dependent inter alia on the dimensioning of the coils (51) and other characteristics of the linear motor (1) as a whole, and can be found and optimized by simulations. Here, an optimum is sought between as great a reduction as possible of the detent force amplitude and as high a propulsive force as possible.

Abstract: A voice coil motor. At least one guide bar is connected to a fixed base. A coil is connected to the fixed base. A support base is movably fit on the guide bar. An annular magnetic member is connected to the support base and surrounded by the coil. A magnetization direction of the annular magnetic member parallels a moving direction of the support base and annular magnetic member. The annular magnetic member includes a first magnetic pole and a second magnetic pole. The first magnetic pole is disposed in the coil and separated from the bottom thereof. The second magnetic pole is disposed outside the coil. The coil interacts with the annular magnetic member to generate a first force, driving the support base and annular magnetic member to move along the magnetization direction of the annular magnetic member.

Abstract: A linear voice coil motor having a radially magnetized magnet structure. The voice coil motor includes an outer yoke an inner yoke magnetically coupled with and extending inside of the outer yoke. An air gap defined between the outer yoke and the inner yoke. A voice coil assembly is mounted so as to enable movement between the voice coil assembly and at least one of the yokes. In one embodiment the magnet structure is an isotropic magnet structure. In one embodiment the magnet structure is formed by a plurality of ring magnets. In one embodiment the magnet structure is formed by a plurality of isotropic ring magnets.

Abstract: A printed circuit board (PCB) coil linear actuator is disclosed. The actuator includes a coil assembly and a magnet assembly. The coil assembly includes a plurality of PCB coils electrically connected in series. The PCB coils arranged in a row and adjacent PCB coils are separated by a gap. Each PCB coil includes a low aspect ratio, multi-layer coil member disposed on a board member. The actuator assembly includes a plurality of magnet units arranged in a row, wherein adjacent magnet units are separated by a gap. When the actuator is assembled, the PCB coils arranged in alternating sequence with the magnet units. The PCB coil linear actuator is intended to replace traditional slotted bobbin voice coil actuators (VCAs) and is particularly useful in fast steering mirror (FSM) applications. The PCB coil linear actuator provides many advantages over a VCA of an equivalent motor constant, including improved performance, lower weight and a lower profile.

Abstract: A sensorless method and apparatus for detecting piston collisions in a free piston linear compressor motor. The waveform of the back EMF induced in the motor stator windings is analysed for slope discontinuities and other aberrations in a time window centred on the back EMF zero-crossings. Waveform slope artefacts are indicative of piston collisions and cause the motor power to be decremented in response.

Abstract: In some embodiments, a moving magnet type linear slider capable of eliminating a magnet suction force caused by a linear motor to minimize the linear guide friction is provided. The field of the linear motor includes magnet track having a horizontally arranged generally U-shaped magnetic yoke and plural pairs of field permanent magnets arranged on inner opposed surfaces of the magnetic yoke with polarities arranged alternately in a longitudinal direction of the magnetic yoke, each pair of the filed permanent magnets being arranged with opposite polarities faced with each other. The armature of the linear motor includes an armature holder mounted on the side portion of the fixed base in a vertically extended manner, and a planar coreless armature holder horizontally held by the armature holder. The stroke direction length Lmg of the magnet track is set to be longer than the stroke direction length La of the armature.

Abstract: A driving device includes an electromagnetic actuator indicating a first coil and a second coil which detects a change in magnetic flux generated by the first coil, and an electromagnetic actuator controller which feedback-controls the electromagnetic actuator. The electromagnetic actuator controller includes a modulator which gives a modulated signal, which is generated based on a target value in the feedback control, to the first coil, and a demodulator which demodulates an output signal from the second coil, and in which the target value is a target thrust of the electromagnetic actuator. The electromagnetic actuator controller includes a scale converter which performs a square-root arithmetic operation for the target value to feedback-control the electromagnetic actuator based on an output signal from the scale converter and a signal demodulated by the demodulator.

Abstract: A recoilless voice coil actuator and method having flexures connected to both the magnet and the voice coil allowing independent movement of both the magnet and the voice coil in the direction of actuation. The stiffness or resistance to movement of the flexures is selected so that the natural frequencies of the magnet and the voice coil along the direction of actuation are substantially the same.

Abstract: A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.

Abstract: Methods and systems are provided for driving one or more force coils. A system for driving force coils is provided including a PWM drive coupled to a first coil and a linear drive coupled to a second coil. The PWM drive efficiently drives the first coil to apply a first force. The linear drive drives the second coil to apply a second force that is substantially noise-free. The first force is greater than the second force.

Abstract: An origin microadjustment mechanism for a linear motor is assembled on a stator of the linear motor and comprises a load bearing member fixed to a sensing member and two positioning seats. The load bearing member is movably passed through the positioning seats, and the positioning seats are fixed to the stator, so as to adjust the position of the sensing member relative to the stator.

Abstract: In a linear actuator (1), on the inside of a rectangular tubular movable element (3), a linear guide (14) that supports the movable element (3) so as to be linearly movable is positioned at a center of the movable element (3), and a position detecting mechanism (20) and load attaching member (13) that sandwich the linear guide are disposed linearly in a vertical direction. This arrangement enables a center of gravity of the movable element (3) to be matched with a center of the linear guide (14). A magnetic circuit is in a bilaterally symmetrical relationship with regard to the center of the movable element (3). Therefore, a center of a thrust force that acts upon the movable element (3) is matched with the center of the movable element (3). The center of the thrust force that acts upon the movable element (3), the center of gravity of the movable element (3), and the center of the linear guide (14) are positioned at the center of the movable element (3).

Abstract: A linear motor having a more preferable braking function is realized with a low cost. A linear motor has a slider and a stator. A driving winding is wound around the slider. A plurality of permanent magnets forming magnetic poles which invert at a predetermined period are provided on a surface of the slider opposing the stator. Teeth are formed on the stator with a predetermined spacing therebetween. The stator extends to a region outside of an effective movable range, and a braking winding is wound around the teeth in the extended portion. When the slider moves into a region outside of the effective movable range, an induced voltage is generated in the braking winding and a current flows. A thrust in a direction opposite to the movement direction of the slider is generated by the current.

Abstract: A circuit device is disclosed which is used to increase useable motor voltage in a long stator drive. Further, suitable methods for operating a magnetically levitated vehicle provided with the circuit device are also disclosed. In one embodiment of the present invention, the stator section of the long stator drive is connected to the energy supply line on two connection points by way of a first and a second switch. A third switch is located between both connection points arranged on the energy supply line. Both of the stator section connections are connected to the ground potential by way of a fourth and a fifth switch. In one embodiment, in order to accelerate the magnetically levitated vehicle, the first and the second switches are closed and all other switches are opened. The stator section is cross-flown in a direct manner by current in the energy supply line.

Abstract: The invention relates to a synchronous linear motor comprising a mobile primary part (3) and a fixed secondary part (1, 2). The primary part (3) comprises conductive coils (4) and permanent magnets, and the secondary part (1, 2) has a ferrous structure comprising teeth (6, 7) which are oriented towards the primary part (3). The secondary part (1, 2) comprises at least one active region (2) which is characterized in that all of the teeth (7) of an active region (2) also comprise conductive coils (5).

Abstract: An elevator door mover device (40) includes a threaded ferromagnetic shaft (42). Magnetic movers (48) associated with doors (26) generate magnetic fields that cause the doors to move responsive to rotation of the shaft (42). In one example, a controller (46) controls a speed of a motor (44) that drives the shaft (42). The controller (46) in some examples also selectively controls the strength of the magnetic fields of the movers, which provides more customizable door performance.

Abstract: A linear drive apparatus comprising: a guide having an internal body; a slider moved along the guide, a driving mechanism for generating a driving force by magnetic interaction of the slider with the guide so as to linearly drive the slider; and a magnetic measurement unit having a magnetic scale and a detector which are opposed to each other and change a relative position relative to each other in order to obtain the relative position of the slider relative to the guide, wherein an opposing direction of the magnetic scale and the detector is the direction of the outer circumference of the guide, and the detector detects a signal from the magnetic scale in accordance with the relative position of the slider, whereby the relative position of the slider is obtained.

Abstract: To accurately tune the vibration frequency of a suspension during assembly. Secured positions 3e where a magnetic circuit part 2 is secured to a suspension 3 are provided near to each other. From among the secured positions 3e, secured positions 3e suitable for the characteristics of a suspension 3 to be mounted and the weight of a magnetic circuit part 2 are selected and secured to each other. Thus, the distance between the securing position and the central position of vibration of a suspension 3 and a housing 1 can be changed to tune the frequency to the desired value.

Abstract: A driving device includes a drive source, a driving unit, and a driven member. The drive source is configured and arranged to generate a driving force. The driving unit is coupled to the drive source to move with a reciprocating motion between first and second directions by the driving force. The driven member is arranged to frictionally engage with the driving unit to move in the first direction in response to the reciprocating motion of the driving unit. The driving unit is further arranged to convert a portion of the driving force into a pressing force that acts on the driven member in a direction substantially perpendicular to the first and second directions with a first conversion ratio when the driving unit moves in the first direction and with a second conversion ratio smaller than the first conversion ratio when the driving unit moves in the second direction.

Abstract: According to one example a linear translation stage is provided. The linear stage includes a first portion (e.g., a base portion) and a second portion (e.g., a stage portion) configured for relative translation with respect to each other. One of the first portion or the second portion has a coil associated therewith and the other of the first portion or the second portion has a magnetic source associated therewith. The magnetic source may include one or more magnets to produce a magnetic field that generally encompasses the coil such that current through the coil causes a force on the coil, thereby causing translation of the first portion relative to the second portion.

Abstract: An electrically powered launcher is disclosed that can accelerate small payloads to orbital velocities. The invention uses a novel geometry to overcome limitations of other design, and allows full exploitation of existing superconducting materials.

Abstract: A small electric appliance with a drive mechanism for generating an oscillatory motion of at least one working unit of the small electric appliance. The drive mechanism has a first drive component, a second drive component, and a coil for producing a magnetic field that extends from the first drive component and acts on the second drive component that is movably arranged in the small electric appliance, in such a way that the second drive component is set in an oscillatory motion. The first drive component is movably arranged in the small electric appliance in order to execute an oscillatory motion in phase opposition to the second drive component, and the drive mechanism is fastened to the small electric appliance by means of at least one first spring element.

Abstract: A mover for a linear motor comprises a body. The body includes at least more than one engaging elements, at least more than one connecting element, at least more than one engaging portion and at least more than one connecting portion. With the engaging elements, connecting elements, engaging portions and connecting portions of the body, multiple movers can be connected with each other and perform the actuating action by cooperating with the stator, thus not only increasing the push force by achieving a continuous electric current multiplication of the linear motor, but also reducing the development cost of the mover, and achieving the high availability that the quantity of the movers can be increased or decreased according to the requirements of the client.

Abstract: A linear motor comprise a pipe shaped member, and a stator stored in the pipe shaped member, the stator including plural magnets arranged in series so that adjacent poles of the plural magnets having the same magnetic pole are opposed each other, and a moving member capable of moving, the moving member being arranged to be opposed to an outer surface of the pipe shaped member, wherein the moving member includes an electro-magnetic coil and a coil holding member for holding at least a part of the outer surface of the electro-magnetic coil.

Abstract: The present invention relates to a linear motor guide apparatus, which comprises a linear motor stator and rotor; an up-projecting partitions, an LM (linear motor) rail and an LM (linear motor) block installed in a main base; and a main cover installed elastically in the longitudinal direction, so that the installation of the apparatus is convenient, and the whole apparatus can be reciprocally moved a certain distance stably.