Abstract: A charging device has a first printed circuit board (PCB) having a top metal layer and a bottom metal layer, where a first plurality of charging cells is provided on the top metal layer of the first PCB and a second plurality of charging cells is provided on the bottom metal layer of the first PCB. The charging device may have a second PCB having a top metal layer and a bottom metal layer, where a third plurality of charging cells is provided on the top metal layer of the second PCB and a fourth plurality of charging cells is provided on the bottom metal layer of the second PCB. An adhesive layer may join the first and second PCBs. One or more interconnects may be provided between the bottom metal layer of the first PCB and the top metal layer of the second PCB.

Abstract: An actuator comprises a coil, a first cooling plate and a second cooling plate. The cooling plates are configured to cool the coil. The first and second cooling plates are arranged at opposite sides of the coil to be in thermal contact with the coil. The coil comprises a first coil part and a second coil part, the first coil part facing the first cooling plate and the second coil part facing the second cooling plate, the first and second coil parts being separated by a spacing there between. The first cooling plate, the first coil part, the spacing, the second coil part and the second cooling plate form a stacked structure whereby the coil parts are arranged between the cooling plates and the spacing is arranged between the coil parts. The actuator further comprises a filling element arranged in the spacing. The filling element to push the first coil part towards the first cooling plate and to push the second coil part towards the second cooling plate.

Abstract: A device and a plurality of methods for transporting are disclosed. One method includes moving a plurality of transport movement devices (14) along a guide track (22) by use of a linear motor system. A long stator (16) of the linear motor system has, along a portion of the guide track (22), a predetermined functional region. The method includes portion-wise varying of a magnetic field generation of the long stator (16) within the predetermined functional region (46) for successive transport movement devices of the plurality of transport movement devices (14). It is thus possible to achieve various advantages, such as for example prolonging the motor service life, preventing emergency shut-offs, increased performance of the long stator linear motor and/or allowing smaller dimensioning of the long stator (16).

Abstract: A system is provided that includes a print head, a conveyance system, an encoding sensor, and at least one processor. The print head defines a print zone, and is configured to print on objects within the print zone. The conveyance system passes through the print zone, and is configured to translate a pallet through the print zone. The encoding sensor is disposed proximate to the conveyance system, and is configured to be oriented toward the pallet and to acquire positional information regarding the pallet. The at least one processor is operably coupled to the print head and the encoding sensor, and is configured to: receive the positional information from the encoding sensor; determine timing information corresponding to when a substrate disposed on the pallet will be in the print zone; and control the print head to print on the substrate when the substrate is in the print zone.

Abstract: A combined electric motor and motor drive are provided. The electric motor and motor drive are attached together to form a co-packaged unit. In the co-packaged electric motor and motor drive, both the motor drive and the electric motor generate heat. A thermoelectric cooler is provided that may transfer heat away from the motor drive. The thermoelectric cooler may also insulate the motor drive from the heat generated by the motor.

Abstract: An electric linear motor includes a support structure, a stator assembly secured to the support structure, and an armature assembly secured to the support structure for guided movement relative to the stator assembly. The armature assembly includes a plurality of magnetic devices and a core support supporting each of the magnetic devices in spaced apart relation to the stator assembly. The core support has a plurality of fluid cooling passageways formed therein.

Abstract: A system for wirelessly transmitting power between a track and independent movers in a motion control system includes a pick-up coil provided proximate to the magnets on the movers. The fundamental component of the voltage applied to the drive coils interacts primarily with the magnetic field generated by the permanent magnets on the movers and not with the pick-up coil. Consequently, the pick-up coil does not interfere with desired operation of the movers but rather, interacts primarily with the harmonic components and has current and voltages induced within the pick-up coil as a result of the harmonic components. The energy captured by the pick-up coil reduces the amplitude of eddy currents on the mover. After harvesting the harmonic content, the pick-up coil may be connected to another circuit on the mover and serve as a supply voltage for the other circuit.

Abstract: A method and system for motion control of movers in an independent cart system is disclosed. In one implementation, the independent cart system includes a plurality of track segments, each section having a respective controller. One of the controllers receives a motion command for a plurality of carts, respectively. The controller generates a force command for each of the plurality of carts and transmits the respective commands to the track segments commutating the plurality of carts.

Abstract: A tray conveyor with trays driven by a linear synchronous motor. The trays are supported on a pair of guide rails in a conveyor frame. The trays include a permanent-magnet array whose magnetic field interacts with a traveling electromagnetic wave produced by a linear-motor stator extending along the conveyor between the guide rails to propel the tray in a conveying direction.

Abstract: A secondary part of an ironless linear motor includes a spacer and two yoke plates, which are arranged in parallel to each other and carry magnets having an alternating polarity. The yoke plates are maintained at a defined distance by the spacer. The spacer has at least two uninterrupted bore holes. Sleeves having a first screw head and an internal thread are inserted through one of the yoke plates and through a respective uninterrupted bore hole, the first screw heads securing the yoke plate in place on the spacer. A screw, having a second screw head, is screwed through the other yoke plate into each sleeve so that the second screw heads secure the other yoke plate in place on the spacer.

Abstract: A method for manufacturing a curvilinear track section including: forming a curvilinear track portion; cutting out a first slot grouping from an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a first predetermined angle; cutting out a second slot grouping from the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and inserting motor units into the first and second slot groupings. A curvilinear track section having: a curvilinear track portion; a first slot grouping formed in an exterior edge of the curvilinear track portion, wherein the first slot grouping is at a predetermined angle relative to the exterior edge; a second slot grouping formed in the exterior edge of the curvilinear track portion, wherein the second slot grouping is at a second predetermined angle; and motor units inserted into the first and second slot groupings.

Abstract: A control device, linear drive, production- or packaging machine, computer program product and method for controlling movement of at least one rotor in the linear drive, wherein a user or a machine station specifies the movement pattern to the control device to specify the movement, where the specified movement pattern is associated with virtual axes, particularly via the computer program product, the movement pattern is advantageously automatically associated with virtual axes subsequently associated with real axes, a control unit, i.e., a converter, controls movement of the rotor on the segment of the linear drive and the control unit supplies at least one segment with electrical voltage or current, where the segments as part of the linear drive therefore move the rotors in accordance with the specifications of the movement pattern, where such an association occurs automatically, and the user is relieved of this task during specification of the movement pattern.

Abstract: Provided herein is a power converter component to power a drive unit of an electric vehicle drive system. The power converter component includes an inverter module formed having three half-bridge modules arranged in a triplet configuration for electric vehicle drive systems. Positive inputs, negative inputs, and output terminals of the different half-bridge inverter modules are aligned with each other. The inverter module includes a positive bus-bar coupled with the positive inputs and a negative bus-bar coupled with the negative inputs of the half-bridge inverter modules. The positive bus-bar is positioned adjacent to and parallel with the negative bus-bar. The inverter module can be coupled with a drive train unit of the electric vehicle and provide three phase voltages to the drive train unit. Each of the half bridge modules can generate a single phase voltage and three half-bridge modules arranged in a triplet configuration can provide three phase voltages.

Abstract: Provided herein is a power converter component to power a drive unit of an electric vehicle drive system. The power converter component includes an inverter module formed having three half-bridge modules arranged in a triplet configuration for electric vehicle drive systems. Positive inputs, negative inputs, and output terminals of the different half-bridge inverter modules are aligned with each other. The inverter module includes a positive bus-bar coupled with the positive inputs and a negative bus-bar coupled with the negative inputs of the half-bridge inverter modules. The positive bus-bar is positioned adjacent to and parallel with the negative bus-bar. The inverter module can be coupled with a drive train unit of the electric vehicle and provide three phase voltages to the drive train unit. Each of the half bridge modules can generate a single phase voltage and three half-bridge modules arranged in a triplet configuration can provide three phase voltages.

Abstract: A moving-magnet transfer platform includes a mover part, a driving part and a stator part. The mover part includes a moving table and a magnet assembly. The stator part includes plural coils, plural switch elements, a current sensor, an electric angle detector, plural magnetic field sensors and a signal processor. The plural switch elements are connected between the driving part and the corresponding coils. When the magnet assembly is moved to a position of the corresponding coil, a magnetic field change is detected by the corresponding magnetic field sensor. The signal processor is used for controlling operations of the plural switch elements. When the magnet assembly is moved to the position of the corresponding coil, the corresponding switch element is turned on under control of the signal processor, so that the moving table is moved with the magnet assembly.

Abstract: A laboratory sample distribution system is presented. The system comprises carriers to carry sample containers. Each carrier comprises a magnetically active device. The system comprises a transport plane to support the carriers and electro-magnetic actuators stationary arranged below the transport plane. The actuators move the carriers on top of the transport plane by applying a magnetic force to the carriers. The system comprises a control device to control the movement of the carriers on top of the transport plane by driving the actuators such that the carriers move along corresponding transport paths simultaneously and independently from one another and a sensor to measure supply currents and/or supply voltages. The actuators are supplied with electrical energy based on the supply currents and/or the supply voltages. The system comprises a monitoring device coupled to the sensor. The monitoring device monitors the actuators temperature based on the measured supply currents and/or supply voltages.

Abstract: A magnet assembly for a linear motor, the magnet assembly including one or more permanent magnets, a mounting plate having a mounting portion that is configured for arranging and mounting the one or more permanent magnets along a direction of elongation of the mounting plate, and at least one elongate member that extends at least partially through the mounting plate between a first end and second end thereof, the at least one elongate member extending at least partially through the or each magnet for fixing the or each magnet with respect to the mounting plate.

Abstract: A linear electric actuator for steering systems includes: a casing, an electric motor, housed in the casing, which is provided with a stator and a hollow rotor internally concentric to the stator, a holder nut internally fixed to the rotor, and a stem having a thread coupled to the holder nut. The stem includes a first portion provided with a surface treatment, which projects outside the casing, and a second portion without said surface treatment, which is contained inside the casing and in which the thread is obtained.

Abstract: A magnet assembly for a linear motor includes a cover member having weak magnetic properties, which covers one or more magnet plates, and a fixing mechanism for positioning the end parts 14c of the cover member directly above permanent magnets and detachably fixing the cover member to the magnet plate. The cover member has a first surface part covering a surface of the magnet plate which faces an armature and second surface parts continuous from the first surface part and covering side parts of the magnet plate. Furthermore, the fixing mechanism is provided on the second surface parts. Through the use of this magnet assembly for a linear motor, it is possible to minimize a rise of the cover member from the magnet plate without deteriorating workability at the time of installation or replacement of the cover member.

Abstract: A conveying apparatus includes a circulation track and a plurality of travelers movable along the circulation track under a control of a controller for conveying articles. If no preceding article-conveying traveler exists on the front side of one of the travelers planned for receiving and conveying the article detected by a detection section, the planned traveler serves as a no-article conveying traveler, and the other traveler located adjacent the planned traveler serves as an article conveying traveler.

Abstract: A power converter for a linear drive system having improved control of the switching devices to reduce the effects of localized heating within the power converter is disclosed. The linear drive system controls multiple movers along a track. Multiple coils are positioned adjacent to each other along the length of the track. Each coil is connected to a switching device within the power converter to energize and de-energize the coils. Pairs of adjacent switching devices are connected to coils that have at least additional coil located between the adjacent switching devices. Thus, adjacent switching modules do not conduct the same level of current and those switching modules that are required to conduct elevated levels of current are spaced apart from each other within the power converter. Consequently, the heat generated as a result of the elevated current and increased switching is similarly spread out within the power converter.

Abstract: The invention relates to a conveying arrangement comprising at least one mover (20) which has at least one magnet (19), preferably a permanent magnet, and cooperates with a drive surface (13) so that the mover (20) can be slidably and/or rotatably moved with respect to the drive surface (13) in at least two degrees of freedom, at least one protective device (40) being provided and arranged between the drive surface (13) and the mover (20).

Abstract: A cooling structure for a first electromagnetic coil includes the first electromagnetic coil having a space extending in the direction of a predetermined axis Z; a cooling member attached to an end surface, with respect to the direction of the predetermined axis Z, of the first electromagnetic coil and having a flow path for fluid internally formed; and an inlet pipe and an outlet pipe connected, within the space, to an inlet and outlet, respectively, of the flow path of the cooling member and extending through the space to a region outside the electromagnetic coil.

Abstract: A linear actuator that is configured to be extended/contracted by relatively displacing a first tube and a second tube in an axial direction, includes a rod that is provided inside the first tube, a plurality of permanent magnets that are held in the rod so as to be arranged in the axial direction; a stopper that is provided on a tip-end portion of the rod, a coil that is provided inside the second tube so as to face the permanent magnets, and a stopper receiving portion that is provided on the second tube so as to face the stopper, wherein the relative displacement between the first tube and the second tube in the extension direction is restricted by bringing an extension-direction-side end surface of the stopper into contact with the stopper receiving portion at a fully extended position.

Abstract: A linear conveyor is provided with a linear motor stator including electromagnets and operable to individually undergo electric current supply control with respect to each zone; a conveyor carriage provided with a linear motor rotor and a unique information storing device; motor control devices configured to perform electric current supply control for the electromagnets with respect to each zone; and a reading device configured to read position correction data of the conveyor carriage stored in the unique information storing device. Each of the motor control devices is configured to correct a target stop position of the conveyor carriage, with use of the position correction data read by the reading device for performing electric current supply control based on the corrected target stop position.

Abstract: Provided herein is a linear motor in which a back yoke can readily be mounted onto a linear motor body. The linear motor body is surrounded or wrapped by the back yoke that works to form part of a magnetic circuit of the linear motor body. The back yoke assembly includes first and second divided assemblies. The first and second divided assemblies have the same dimension and shape, and are each formed by press working a silicon steel plate or a magnetic plate made of SPCC material.

Abstract: An inner diameter of a third stator core is greater than an inner diameter of a second stator core. When a first stator core, the second stator core, and the third stator core are placed in an inner periphery of a coil, a jig is inserted from an inner-periphery opening of a first end side of the third stator core into the third stator core to directly position the first stator core, the second stator core, and the third stator core in a radial direction. Therefore, a side force generated by an axis deviation between the first stator core, the second stator core, and the third stator core can be reduced.

Abstract: A linear motor for optical systems, for example, endoscopes, is described. The motor has a stator with a magnetic guiding member and a coil. The armature of the motor includes two permanent magnets which are of opposite polarity. A pole piece made of soft-magnetic material is provided between the permanent magnets. By applying current to the coil, the armature can be displaced from a rest position in the longitudinal direction.

Abstract: A voice coil motor includes a stationary member, a moveable member, an upper resilient plate, and a lower resilient plate. The stationary member includes a receiving room and a magnetic unit. The magnetic unit consists of two magnets adhering to two sidewalls of the stationary member. The moveable member is received in the first receiving room and spaced from the stationary member. The moveable member includes a frame and coils wrapped around the frame. The coils face the magnets. The magnets and the coils cooperatively drive the moveable member to move upward from an initial position. The upper resilient plate and the lower resilient plate connect the stationary member with the moveable member. The two resilient plates provide a restoring force to drive the moveable member to return to the initial position.

Abstract: A linear motor for vacuum environment includes a core and a housing. The core includes a plurality of cooling plates and a plurality of electrical coils sandwiched between the plurality of cooling plates. The core further includes a plurality of thermally conductive epoxy layers positioned between the plurality of electrical coils and the plurality of cooling plates, and a plurality of shims located between the plurality of electrical coils and the plurality of cooling plates to determine a distance between the plurality of electrical coils and the plurality of cooling plates. The core is assembled and tested independently and before being assembled in the housing. The housing encloses the core and includes a body, a plurality of feed throughs, and a lid.

Abstract: A multi-shaft linear motor formed by a plurality of single-shaft linear motors is disclosed. Each of the single-shaft linear motors is provided with a magnetic body and an armature. Each of the single-shaft linear motors includes a base plate. The base plate has a base surface defining the moving direction, wherein the stator is fixed onto the base surface along the moving direction, and the mover is attached onto the base surface in a movable manner reciprocating along the moving direction and in opposed relation to the stator. The single-shaft linear motors are stacked in a stacking direction perpendicular to the base surface in such a way that the single-shaft linear motors are individually detachable as a unit, the base plate thereof contains the stator and the mover.

Abstract: A linear motor comprises an exciter that includes a plurality of permanent magnets in a shaft, an armature that surrounds the exciter and includes a plurality of coils, and a frame that houses the armature, wherein the armature houses the plurality of coils in a magnetic tube which has a linear opening.

Abstract: A stator for a linear motor includes a yoke portion made of a soft magnetic material. The yoke portion includes an attachment portion to which a fastener for fixing the yoke portion to an installation target is attached. The yoke portion extends rectilinearly. The yoke portion further includes a plurality of salient poles protruding from the yoke portion. The salient poles are arranged at a specified interval along an extension direction of the yoke portion.

Abstract: A positioning system for positioning a positioning unit along a longitudinal axis includes: a linear guide arrangement for enabling a linearly guided motion parallel to the axis; a motor includes a moving motor member operatively connected to the linear guide arrangement and an elongated stationary motor member extending parallel to the axis; and a force transmission arrangement operatively connecting the moving motor member to the positioning unit, wherein the force transmission arrangement is arranged to provide a semi-rigid engagement between the positioning unit and the moving motor member, wherein the positioning unit and the moving motor member, respectively, are operatively connected to the linear guide arrangement by at least two guide engaging carriages, and wherein the positioning unit is attached to the guide engaging carriages by rigid or resilient positioning unit holders.

Abstract: An interior magnet linear induction motor includes an armature and a line of inductor teeth. The armature includes coils arranged between a plurality of teeth, and the line of inductor teeth is arranged so as to face the armature and includes a plurality of tooth portions arranged at a constant pitch in a linear stroke direction. An end portion of each of the plurality of teeth has a shape such that magnetoresistance of the tooth increases toward the root side. At least one permanent magnet is arranged at an end portion of each of the plurality of teeth and adjacent permanent magnets that are arranged at different teeth are magnetized such that opposite magnetic poles face each other.

Abstract: A method of constructing a linear drive motor assembly is disclosed. In accordance with the method, a support plate and a platen with a plurality of teeth are provided. A honeycomb core comprising a commercially available, off-the-shelf honeycomb material is provided. The honeycomb core has a plurality of cells arranged in a planar array where the plurality of cells is defined by walls extending in planes substantially perpendicular to the planar array. The support plate is directly secured to one side of the planar array. The platen is secured directly to the other side of the planar array. A forcer having a motor stack is magnetically coupleable to the platen to form a linear drive motor.

Abstract: An apparatus for positioning a workpiece carrier with respect to a workstation can include a workpiece carrier movable relative to the workstation and having an encoder strip, at least one encoder reader located at the workstation for generating a signal in response to interaction with at least one encoder strip, and a drive engaging the workpiece carrier for moving the carrier relative to the workstation, the drive responsive to the signal from the encoder reader. A closed loop feedback control system can be provided for receiving the signal from the encoder reader, and for generating an output signal in response to the signal from the encoder reader in accordance with a program stored in memory.

Abstract: A linear actuator includes a coil portion and a shaft portion. The coil portion includes a plurality of coils respectively applied with AC currents having different phases from one another. The shaft portion passes through an inside of the plurality of coils. The shaft portion includes: a plurality of permanent magnets and a plurality of intermediate members. The plurality of permanent magnets is arranged along a central axis C such that opposite magnetization directions face to each other in a direction of the central axis C. Each of the plurality of intermediate members is arranged between adjacent two of the plurality of permanent magnets. A saturation magnetic flux density of each of the plurality of intermediate members is higher than a saturation magnetic flux density of each of the plurality of permanent magnets.

Abstract: An optical device may include a movable body holding a lens, a fixed body movably holding the movable body, a drive magnet and a drive coil for relatively moving the movable body with respect to the fixed body, and a metal member fixed to the drive magnet. The drive magnet is fixed to one of the movable body and the fixed body and the drive coil is fixed to the other of the movable body and the fixed body. A nickel plating layer containing at least nickel is formed on a surface of the drive magnet and a surface of the metal member, and the drive magnet and the metal member are joined to each other by a joining layer which is made of tin-based metal containing at least tin and is disposed between the drive magnet and the metal member.

Abstract: An automation system is provided. The automation system includes a rail assembly comprising a first stop block at a first end and a second stop block at a second end. The automation system further includes a magnet assembly mounted on the rail assembly between the first and second stop blocks and a slide assembly configured to move back and forth over the rail assembly between the first block and the second block. The automation system further includes a linear motor coupled to the slide assembly and magnetically coupled to the rail assembly, the linear motor configured to generate a magnetic field that interacts with the magnetic assembly to provide a linear force that moves the slide assembly on the rail assembly.

Abstract: In a lens driving device, magnetic attraction plates that are magnetic bodies are disposed on a fixed frame at both ends of a movement region of a movable unit. Therefore, when the movable unit moves in the fixed frame to one side or to the other side in the fixed frame and reaches a position at either end of the fixed frame, magnets on the movable unit are magnetically attracted to the magnetic attraction plates on the fixed frame continuously. As a result, the movable unit can be retained at the position even when the coil becomes de-energized.

Abstract: The invention relates to a linear drive for a machine tool having a housing, having a carriage, which is mounted so it is axially movable in the housing via two bearings, and has a central axis and a length, and having at least one first motor, having a first motor element and a second motor element, wherein said first motor element is disposed on said carriage and said second motor element is disposed on said housing, wherein said first motor element is implemented on said carriage as a primary part and said second motor element is implemented on said housing as a secondary part. Furthermore, the invention relates to a method for moving a carriage for a lathe tool of a highly-dynamic machine tool employing a crossed roller bearing for mounting the carriage, wherein all roller bodies of said crossed roller bearing are always operationally linked to a carriage-side bearing surface, and said carriage is driven at an oscillation frequency of at least 50 Hz, in particular between 60 Hz and 200 Hz.

Abstract: Coil arrays are disclosed for a planar or linear motor. An exemplary coil array includes multiple coil modules. Each coil module includes at least one coil set, respective electrical circuitry to and from the coil set, at least one respective hydraulic cooling device for the coil set, and respective hydraulic conduitry to and from the cooling device. The coil modules are interchangeably mountable relative to each other in the array such that mounting the coil module to the array produces accompanying hydraulic and electrical connections between the array and coil module, and removing the coil module from the array severs the connections.

Abstract: A method and system for facilitating focusing of a miniature camera are disclosed. One or more lenses can be attached to a MEMS stage. The MEMS stage can be moved by a Lorentz actuator. The MEMS stage can be configured to limit movement of the lens(es) to a single degree of freedom to inhibit misalignment thereof with respect to an imaging sensor. The stage can be biased to a predefined position thereof, e.g., for focus at infinity. A metal cover can inhibit electromagnetic interference and can limit movement of the lens(es).

Abstract: Provided is a linear motor capable of simplifying assembling of a coil unit and stabilizing a coil pitch and the overall length of the coil unit. The linear motor has a rod 1 having magnets 3, a plurality of coils 4 arranged in the axial direction of the rod 1, a housing 2 covering the coils 4, and a coil holder 5 holding the coils 4 in the housing 2. The coil holder 5 includes a holder main body 5a elongating in the coil arrangement direction and a plurality of spacer portions 5b made of resin and each interposed between each adjacent two of the coils 4 to insulate the coils 4 from each other, the spacer portions 5b being formed integrally with the holder main body 5a.

Abstract: A linear and curvilinear motor system includes: linear and curvilinear guiding devices movably guiding and respectively supporting right and left of a slider, each having a guide rail configured by linear tracks and a circular arc track and slider blocks; a motor unit having a stator with a stator linear section and a stator circular arc section and a mover with a linear section and provided for the slider and away from the stator with a gap interposed therebetween; and an encoder head and a hole sensor detecting positions of the linear tracks and the circular arc track. When a magnetic pole pitch of the linear section of the stator is a distance ?m and a magnetic pole pitch of the circular arc section of the stator is an angle ?m, a radius r of the circular arc track at the position detection point is defined as r=?m/?m.

Abstract: This invention relates to a positioning system for positioning a positioning unit along a longitudinal axis. The positioning system comprises a linear guide arrangement for enabling a linearly guided motion parallel to said axis, wherein the positioning unit is operatively connected to said guide arrangement. Furthermore, the positioning system comprises a motor, wherein the motor comprises a moving motor member operatively connected to said linear guide arrangement and an elongated stationary motor member extending parallel to said axis. The moving motor member is adapted to move along the stationary motor member for providing motion parallel to said axis. Moreover, the positioning system further comprises a force transmission arrangement which operatively connects said moving motor member to the positioning unit. The force transmission arrangement is arranged to provide an engagement between said positioning unit and said moving motor.

Abstract: The present invention relates to a linear motor provided with a magnetic body and an armature and adapted to produce a force causing the magnetic body and the armature to be relatively displaced in a given moving direction by interaction of magnetic fluxes generated between the magnetic body and the armature during an operation of supplying electric power to the armature.

Abstract: The present invention relates to a linear motor provided with a magnetic body and an armature. The liner motor is adapted to produce a force causing the magnet body and the armature to be relatively displaced along a given linear moving direction by interaction of magnetic fluxes generated between the magnetic body and the armature during an operation of supplying electric power to the armature. In a typical aspect, the linear motor of the present invention comprises a movable section attached to a base plate adapted to set the moving direction on a base surface thereof, in such a movable manner as to relatively reciprocate along the moving direction with respect to the base plate. A mover is provided on the movable section and formed as one of the magnetic body and the armature.

Abstract: A voice coil motor assembly includes a housing, a voice coil motor, a cover, and a transparent board. The voice coil motor is received in the housing. The cover is secured to the voice coil motor and resists the top surface of the housing. The cover includes a top surface defining an aperture. A limiting element protrudes from the top surface of the cover. The transparent board is adhered to the top surface of the cover and covers the aperture. The movement of the transparent board is limited by the limiting element.