Class / Patent application number | Description | Number of patent applications / Date published |
310120160 | Voice coil type | 65 |
20090184589 | ACOUSTIC EXCITER AND SPEAKER USING IT - An acoustic exciter comprises a suspension made of an elastic material, which is coupled to the opening part of a frame, and a vibrator to which a voice coil disposed in the magnetic gap of a magnetic circuit connected to the suspension is coupled. An elastic body is so disposed between the frame and the vibrator as to be pressed against the frame and the vibrator. Thereby, the exciting efficiency of the vibrator can be increased, and the performance and tone quality of the acoustic exciter can be improved. | 07-23-2009 |
20090289508 | Permanent magnet member for coil motor and Voice Coil Motor - The permanent magnet member | 11-26-2009 |
20100019584 | VOICE COIL ACTUATOR - Provided herein is a voice-coil motor that includes a magnetic field having at least two displaced regions of higher intensity separated by a region of lesser intensity and a counter-coil disposed within the region of lesser intensity. | 01-28-2010 |
20100033030 | ACCELERATION GENERATOR AND PSEUDO FORCE SENSE GENERATOR - An acceleration generator | 02-11-2010 |
20100033031 | Voice coil motor for optical device - A voice coil motor. A first coil is connected to a fixed base and includes a first winding portion and a second winding portion connected to and opposite the first winding portion. A second coil is connected to the fixed base and includes a third winding portion and a fourth winding portion connected to and opposite the third winding portion. A first magnetic member is connected to a support base and includes a first magnetic pole and a second magnetic pole. The first and second magnetic poles oppose the first and third winding portions, respectively. A second magnetic member is connected to the first magnetic member and includes a third magnetic pole and a fourth magnetic pole. The third magnetic pole opposes the second winding portion and abuts the first magnetic pole. The fourth magnetic pole opposes the fourth winding portion and abuts the second magnetic pole. | 02-11-2010 |
20100117460 | VOICE COIL MOTOR WITH GUIDING POSTS AND STOPPING BARS - An exemplary voice coil motor includes a hollow stationary magnetic field generator, a movable magnetic field generator, two elastic members, a hollow case and a base. The movable magnetic field generator is received in the stationary magnetic field generator. The two elastic members are adjacent to two ends of the stationary magnetic field generator. The case and the base serve as a package for all of the above elements. The case has a top sheet. The movable magnetic field generator has guiding posts slidably received in the top sheet, and stopping bars. The stopping bars of the movable magnetic field generator are capable of limiting the movement of the movable magnetic field generator toward the top sheet by abutting the top sheet. | 05-13-2010 |
20100237718 | VOICE COIL MOTOR WITH SURFACE COIL - A voice coil motor with a surface coil includes a set of magnetic sensing elements, a lens carrier physically connected to the set of magnetic sensing elements, a pedestal, and a set of printed circuit boards fixed onto the pedestal. A patterned metal layer is fabricated on the set of printed circuit boards to form the surface coil, a Hall sensor is installed on one of the printed circuit boards and transmits signals (e.g., operation voltages and feedback sensing signals) via traces fabricated on the set of printed circuit boards, so as to achieve simultaneous fabrication of the surface coil and traces, thereby saving space which is conventionally occupied by copper coils. The Hall sensor can sense a variation in a magnetic field resulting from the motion of the set of magnetic sensing elements to determine a motion status of the lens carrier. | 09-23-2010 |
20100270870 | VOICE COIL MOTOR WITH ROTATION STOPPING MEANS - A voice coil motor includes a stationary magnetic field generator a moveable magnetic field generator, and an elastic assembly. The stationary magnetic field generator includes a supporting frame and permanent magnetic elements mounted to peripheral sides of the supporting frame. The supporting frame has a first receiving space defined therein and includes first stopping portions formed in the first receiving space. The moveable magnetic field generator is moveably received in the first receiving space, and includes a core member and a coil wrapped around the core member. The core member includes second stopping portions. The second stopping portions are configured for engaging with the at least one first stopping portion to prevent the moveable magnetic field generator from rotating about a central axis of the core member. The elastic assembly elastically connects the moveable magnetic field generator and the stationary magnetic field generator. | 10-28-2010 |
20100277008 | SHELL FOR HOUSING VOICE COIL MOTOR AND VOICE COIL MOTOR MODULE - A shell for housing a voice coil motor (VCM) includes a casing and a cover. The casing defines a rectangular opening and two opening respectively in two opposite edges of the rectangular opening. The casing extends a pair of stripping strips into each opening and towards each other. The cover correspondingly defines two grooves. The cover covers the rectangular opening and each pair of gripping strip is bent into a corresponding groove to grip the cover. | 11-04-2010 |
20100301683 | MAGNETNIC CIRCUIT SYSTEM - A magnetic circuit system includes a T-shaped yoke, a magnet, and a top plate. The top plate has a centre hole, an internal end around the centre hole thereof, and two projecting elements provided separately on upper surface and lower surface of the internal end, which improves non-linear distortion of a transducer using the magnetic circuit system. | 12-02-2010 |
20100314953 | DIRECT CURRENT MOTOR INCORPORATING THERMAL CONTROL - A direct current motor comprises a magnet assembly having a pair of magnets for generating a magnetic field and a coil assembly located between the pair of magnets, the coil assembly and the magnet assembly being movable relative to each other. The coil assembly further comprises a first coil section and a second coil section which are electrically connected to each other. A current generator is electrically connected to the coil assembly and is operative to provide first, second and third currents that are out of phase with respect to one another. The first current is electrically connected directly to the first coil section and the second current is electrically connected directly to the second coil section whereas the third current is electrically connected to the first and second coil sections at a position connecting the first and second coil sections. | 12-16-2010 |
20110012439 | VOICE COIL MOTOR ASSEMBLY - 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. | 01-20-2011 |
20110031822 | VOICE COIL MOTOR FOR DRIVING LENS - Voice coil motor includes a housing shell, a fixing member, a movable member and elastic members. The fixing member includes a bracket and a number of first magnetic members retained on the bracket. The movable member includes a retainer and a number of second magnetic members mounted thereon. One of the first or the second magnetic member includes a first permanent magnet and a second permanent magnet abutting against the first permanent magnet, with each of the first and second permanent magnets including an N polarity side and an S polarity side. A pair of the first and second permanent magnets facing the same other one of the first and second magnetic members with only the N polarity side of the first permanent magnet and only the S polarity side of the second permanent magnet facing the same the other one of the first and second magnetic member. | 02-10-2011 |
20110037326 | VOICE COIL MOTOR FOR DRIVING LENS GROUP - A voice coil motor includes a base, a shell, first and second magnetic members, a lens retainer, a coil of wire mounted on the retainer, first and second elastic members. The base includes a bottom and posts extending upwards from the bottom. The shell includes a top and sidewalls cooperatively defining a receiving space therein. The shell is mounted on the base with the posts being received in the receiving space. The first magnetic members are positioned on the bottom of the base, the second magnetic members are positioned on the top of the shell, and each two adjacent of the posts have one of the first magnetic members and one of the second magnetic members located therebetween. The first resilient member and a second resilient member each include fixing portions fixed to the posts, and a spring portion connected to retainer between the first and second magnetic members. | 02-17-2011 |
20110037327 | LINEAR ELECTROMAGNETIC MACHINES - A linear electromagnetic machine is described which comprises first and second substantially cylindrical parts arranged to move relative to each other along a common axis of motion. The first cylindrical part produces a spatially periodic radial magnetic field across an air gap, the magnetic field having a regular alternating polarity along or parallel to the axis of motion. The second cylindrical part comprises a plurality of laminar electrical conductors wrapped into cylindrical form and placed in the air gap to intercept the magnetic field, each of the laminar electrical conductors compromising a regular pattern of electrically conductive paths, the electrically conductive paths of the plurality of laminar electrical conductors being interdigitated together within the air gap. The use of a plurality of laminar electrical conductors having respective electrically conductive paths which are interdigitated (nested) within the air gap provides for a very thin planar structure which enables the air gap to be made small, thereby improving the efficiency of the electromagnetic machine. In more general terms, improvements relating to the design of low-cost cylindrical or elliptical linear electromagnetic machines are described, in which a conventional assembly of wire coils is replaced by a small number of interdigitated metal laminations. | 02-17-2011 |
20110043055 | PLATE SPRING AND VOICE COIL MOTOR - A plate spring includes holding section, first attached section, second attached section, first spring section connected between the holding section and the second attached section, and a second spring section connected between the first fixed portion and the second fixed portion. The holding section has a first edge, second edge opposite to the first edge, and a third edge. The first attached section is positioned adjacent to an intersection of the third edge and the second edge. The second attached section is positioned adjacent to an intersection of the third edge and the first edge. The first spring section has a wavy configuration and extends from an end of the first edge to the second attached section. The second spring section also has a wavy configuration and extends from an end of the second to the first attached section. The present disclosure also provides a voice coil motor. | 02-24-2011 |
20110062800 | Linear motor - This invention provides a linear motor at least including an electrically controlled actuator and an elastic member. The electrically controlled actuator at least comprises a fixed element, a movable element, and an electrical unit, and at least provides an axial displacement. The elastic member at least comprises a fixed portion, a movable portion, an elastic portion, and a pair of power supply terminals. The fixed portion of the elastic member is connected to the fixed element of the actuator. The movable portion of the elastic member is connected to the movable element of the actuator. Various portions of the elastic member have different thicknesses depending on desired stiffness of each portion, such that the elastic member can be thinned to facilitate miniaturization of the linear motor. The needs to have an elastic member with desired stiffness and to provide good electrical contact are both met by the present linear motor. | 03-17-2011 |
20110163616 | VOICE COIL MOTOR - Disclosed is a voice coil motor, including a base having an opening, a stator is disposed on the base and including a magnet, a mover including a conductive coil opposing with the magnet, and a cylindrical bobbin in which a conductive coil is installed, a case fixed on the base and covering the stator, and a spacer intervened between the stator and the case and constituted with at least two spacers, each formed with different materials to absorb pressures and shocks transmitted to the stator from external. | 07-07-2011 |
20110204731 | VOICE COIL MOTOR - A voice coil motor (VCM) is disclosed. The VCM includes a base formed with an opening; a movable body including a bobbin arranged on the base and formed with a hollow hole and a coil arranged along a periphery of the bobbin; a stator including a frame-shaped magnet arranged on the base, the magnet being discrete from the coil and wrapping a periphery of the coil; and a case covering an upper surface and an outer surface of the magnet, the case being coupled to the base. | 08-25-2011 |
20110241450 | VOICE COIL MOTOR - A voice coil motor includes a stationary frame defining a first receiving space, a cover, and a base defining a second receiving space. The stationary frame includes a top surface and an opposite bottom surface. The top surface defines at least two first recesses. A first blocking portion is formed between each first recess and the first receiving space. At least two first protruding portions extend from the bottom surface. The cover is mounted to the top surface and includes a first surface facing the top surface. At least two second protruding portions extend from the first surface corresponding to the first recesses. The base supports the bottom surface and includes a second surface facing the bottom surface. The second surface defines at least two second recesses corresponding to the first protruding portions. A second blocking portion is formed between each second recess and the second receiving space. | 10-06-2011 |
20110291495 | VOICE COIL MOTOR - A voice coil motor is disclosed, the motor including: a mover including a bobbin including a first bobbin having a lens secured therein and a plurality of second bobbins intermittently protruded from an upper surface of the first bobbin, and a coil block secured to a periphery of the first bobbin; a stator including a magnet facing the coil block and a yoke securing the magnet; a case including a bottom case formed with the bobbin and an upper case coupled to the bottom case and having a portion that is correspondingly opened to the bobbin; and an elastic member elastically supporting the bobbin, wherein any one of the yoke and the upper case is formed with a rotation prevention unit extended to the plurality of second bobbins in order to prevent the bobbin from rotating. | 12-01-2011 |
20120013202 | VOICE COIL MOTOR - Disclosed is a voice coil motor, the motor including a mover having a bobbin equipped with a lens and a coil block secured to an outer circumference of the bobbin; a stator having a magnet that is disposed in such a way as to face the coil block; elastic members coupled to a lower end of the bobbin and connected to both ends of the coil block; a base supporting the elastic members and the stator; and a cover can covering the mover, the stator and the base, with an opening being formed in the cover can to expose the lens therethrough, wherein each of the elastic members includes a terminal portion that extends between the cover can and a side surface of the base, the terminal portion including a short-circuit prevention portion so as to prevent a short-circuit between the terminal portion and the cover can. | 01-19-2012 |
20120025633 | Voice Coil Motor - A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a lens-accommodating, both ends opened cylindrical bobbin and a coil block including a coil wound on a periphery of the bobbin; a stator including a cylindrical yoke formed with a lens-exposing opening, a plurality of magnets disposed inside the yoke and opposite to the coil block, and a magnet fixing member disposed inside the yoke to fix the plurality of magnets; and an elastic member elastically supporting the bobbin. | 02-02-2012 |
20120091827 | VOICE COIL MOTOR WITH ROLLERS - A voice coil motor includes a mount, a movable unit and a number of rollers. The mount includes a through hole, a number of recesses opposing the through hole, and a number of magnetic blocks mounted in the through hole. The movable unit includes a barrel and a coil of wire surrounding the barrel. The movable unit is movably received in the through hole of the frame and surrounded by the magnetic blocks. The rollers are rotatably received in the respective recesses and come in contact with the barrel. The rollers hold the movable unit in position when no magnetic force needed to be applied on the movable unit. | 04-19-2012 |
20120146432 | Voice Coil Motor - Disclosed is a voice coil motor, the motor including a rotor having a cylindrical bobbin that has a support block protruding from an upper end of an outer circumference thereof and a coil block that is coupled to the outer circumference of the bobbin in a direction from a lower surface to an upper surface of the bobbin and is supported by the support block, a stator having a magnet facing the coil block and a yoke holding the magnet, elastic members coupled to upper and lower surfaces of the bobbin, respectively, a base supporting the stator and the elastic members, and a foreign substance inflow-prevention portion formed on an upper surface of the base in such a way as to protrude around an opening formed in a central portion of the base in a shape of a closed loop. | 06-14-2012 |
20120161549 | SYSTEM FOR ASSEMBLING A SPEAKER MOTOR - A retaining member of a speaker motor may be formed using a mold. The mold may receive a plurality of speaker motor components. The mold may be configured to receive the speaker motor components in a desired arrangement. The mold may receive an injected material. The injected material may fill unoccupied space in the mold. The injected material may be cooled to form a retaining member to retain the speaker components in the desired arrangement subsequent to removal of the speaker motor components from the mold. | 06-28-2012 |
20120161550 | PERMANENT MAGNET MEMBER FOR VOICE COIL MOTOR AND VOICE COIL MOTOR - A magnetic head is controlled more stably when retracted from above a magnetic disk. When a permanent magnet member | 06-28-2012 |
20120200176 | Multifunctional Voice Coil Motor - A multifunctional voice coil motor is disclosed, the motor including a rotor including a bobbin and a plurality of magnets arranged at a periphery of the bobbin, a stator including a housing wrapping each magnet and a plurality of coil blocks each arranged at a position corresponding to that of each magnet, a base coupled to the housing, and an elastic member elastically supporting the rotor. | 08-09-2012 |
20120256498 | Voice Coil Motor - A VCM is disclosed, the VCM including a base formed with an opening; a bobbin arranged on an upper surface of the base and mounted with a lens therein; a plurality of magnets secured on the base to face a periphery of the bobbin; a coil block encompassing each magnet and the bobbin, and secured to a part of the bobbin exposed between the magnets; and a cover can encompassing the magnets and the coil block. | 10-11-2012 |
20120306293 | VOICE COIL MOTOR - A voice coil motor (VCM) includes a fixed assembly and a movable assembly. The fixed assembly includes a fixed bracket and a coil group. The fixed bracket is substantially tri-columnar in shape and includes three sidewalls supporting the coil group thereon, and defines a first receiving cavity between the three sidewalls. The coil group is arranged on the three sidewalls. The movable assembly includes a movable barrel movably received in the first receiving cavity, and a magnet group. The movable barrel is also substantially tri-columnar in shape and includes three external surfaces. The magnet group is arranged on the three external surfaces of the movable barrel and spatially opposite to the coil group. | 12-06-2012 |
20120306294 | VOICE COIL MOTOR - A voice coil motor includes a lens retainer, a wire, and an elastic electrode member. The lens retainer includes an end portion. The wire wraps around the lens retainer and includes a first end and a second end. The elastic electrode member is metal and is mounted to the end portion. The elastic member includes a first elastic metal sheet and a second elastic metal sheet. The first elastic metal sheet includes a first electrode. The second elastic plate is physically separated from the first elastic sheet and includes a second electrode. The first end and the second end are respectively soldered to the first electrode and the second electrode. | 12-06-2012 |
20120326532 | ELECTRODYNAMIC-TRANSDUCER MAGNETIC MOTOR - The disclosure relates to an electrodynamic-transducer magnetic motor device ( | 12-27-2012 |
20130002051 | VOICE COIL MOTOR HOUSING AND VOICE COIL MOTOR USING SAME - A voice coil motor housing includes a top wall having an opening and four sidewalls extending from the top wall. The four sidewalls and the top wall cooperatively form a rectangular chamber opened at one end. Each of the sidewalls includes a top portion and a bottom portion. The top portions of the four sidewalls are connected to one another and forming a substantially gapless seam between each two adjacent sidewalls at the top portions. At least one slot is defined in the bottom portions of the sidewalls, the at least one slot is perpendicular to the top wall, and the slot is arranged adjacent to the corresponding gapless seam. At least one snap is arranged on the sidewalls at the corresponding bottom portion thereof, and the at least one snap protrudes inwardly of the chamber. | 01-03-2013 |
20130026858 | VOICE COIL MOTOR AND LENS MODULE - A voice coil motor (VCM) includes a case, a lower plate, a lens holder, a coil, a magnet assembly, and an elastic sheet. The case includes an upper plate and sidewalls extending from edges of the upper plate. Each sidewall includes an inner surface. The lower plate is positioned at one end of the sidewalls and opposite to the upper plate. The lens holder is received in the case. The coil is circled around the lens holder. The magnet assembly consists of a first magnet and a second magnet, the first magnet and the second magnet are plate shaped and respectively positioned on the inner surfaces of opposite two of the sidewalls. The elastic sheet is connected between the lower plate and the lens holder. | 01-31-2013 |
20130033124 | VOICE COIL MOTOR - A voice coil motor includes a housing, a movable barrel, at least two magnetic elements, and a coil received in the housing. The housing defines an accommodating room, and includes a top panel, at least two peripheral panels perpendicular to the top panel, and at least two fixing plates extending in the accommodating room. The at least two magnetic elements are surrounding the movable barrel. Each magnetic element has a first magnetic pole aligned with a corresponding fixing plate and a second magnetic pole fixed on the housing. The coil is sleeved on the movable barrel and is between the fixing plates and the first magnetic poles. | 02-07-2013 |
20130119785 | VOICE COIL MOTOR - A VCM is disclosed, the VCM including a rotor including a bobbin arranged at an upper surface of a base formed with an opening, and a driving coil wound on the bobbin, a stator including a driving magnet opposite to the driving coil, and a yoke secured by the driving magnet at an inner surface of a lateral plate, and a tilting unit including a tilt magnet arranged at an outer surface of the lateral plate, a housing fixing the tilt magnet, and a tilt coil unit opposite to the tilt magnet. | 05-16-2013 |
20130127266 | Electromagnetic Vibrator and Producing Method Thereof - An electromagnetic vibrator includes an electromagnetic provider and a vibration unit, wherein the vibration unit includes a diaphragm unit and an induction coil unit affixing on an inner side of the diaphragm unit, so that when the vibration unit is mounted to the electromagnetic provider, the induction coil is inducted to the electromagnetic to generate an electromagnetic field, so as to axially vibrate the induction coil to vibrate the vibration unit. | 05-23-2013 |
20130154396 | VOICE COIL MOTOR - A voice coil motor (VCM) includes a shell, a frame, an elastic member, a moving unit, and a plurality of magnetic members. The shell includes a top plate and sidewall extending from the top plate. The frame is received in the shell and mounted to the top plate. The elastic member is mounted to the frame. The moving unit is received in the shell and includes a lens retainer and coils wrapped around the lens retainer. The frame and the elastic member are arranged on an end surface of the lens retainer. Each of the magnetic members is directly mounted to the sidewall and positioned between the sidewall and the moving unit. | 06-20-2013 |
20130162058 | VOICE COIL MOTOR HAVING SLOPED SURFACES - An exemplary voice coil motor includes a base, a stationary magnetic field generator, a moveable magnetic field generator, and a case. The base includes a first surface defining a number of cavities. The stationary magnetic field generator is mounted on the first surface, and includes a supporting frame defining a first receiving space. The moveable magnetic field generator is moveably received in the first receiving space, and includes a core member. The core includes a lower surface. A number of flanges extend downwards from the lower surface, and received in a respective one of the cavities. Each of the flanges includes an end surface that is away from the lower surface. The end surface defines two symmetrical sloped surfaces respectively extending slantingly downward from the middle of the end surface to two opposite sides of the flange. The case receives the stationary magnetic field generator, the moveable magnetic field generator. | 06-27-2013 |
20130162059 | ACTUATOR HAVING TWO-STAGE ZOOM FUNCTION - An actuator includes a bracket, permanent magnetic elements, a fixing barrel, and a movable unit. The actuator forms a central axis. The bracket includes a front frame and a rear frame connected with the front frame. Both the front frame and the rear frame include a supporting plate. Each supporting plate defines a through hole coaxial with the central axis. The permanent magnetic elements are positioned on supporting plates of the front and rear frames and surround through holes of the front and rear frames. The movable unit includes a hollow core member and a coil group wrapping around the core member. A height of the core member is smaller than that of the fixing barrel. The core member is movably received in the fixing barrel. The fixing barrel is housed in the bracket, and is sandwiched between the permanent magnetic elements. | 06-27-2013 |
20130175885 | VOICE COIL MOTOR CAPABLE OF INCREASING FOCUSING ACCURACY - A voice coil motor (VCM) includes a moving unit and a fixing unit, and the moving unit is movably received in the fixing unit. The moving unit includes a moving barrel, a first coil assembly, and a second coil assembly. The moving barrel includes a first outer surface. The first coil assembly is sleeved on the first outer surface. The second coil assembly includes four coils positioned at corners of the first outer surface. The fixing unit includes a fixing frame, a first magnet assembly, and a second magnet assembly. The first coil assembly is opposite to the first magnet assembly, and the second coil assembly is opposite to the second magnet assembly. | 07-11-2013 |
20130221765 | VOICE COIL MOTOR WITH CONNECTIVE STABILITY - A voice coil motor (VCM) includes a moving unit, a fixing unit, an elastic plate, and a conducting pole. The moving unit includes a moving barrel and a coil assembly around the moving barrel. The coil assembly includes a connecting portion. The moving barrel defines a blind hole on an upper surface thereof, one end of a conducting pole being received in the blind hole. The fixing unit defines a through hole receiving the moving unit. The elastic plate is connected between the moving barrel and the fixing unit. The conducting pole provides a stable electrical connection between the elastic plate and the connecting portion notwithstanding movements of the moving barrel. | 08-29-2013 |
20130221766 | VOICE COIL MOTOR - A voice coil motor includes a case, a stationary module, and a movable module. The stationary module is retained within the case, and includes a housing and a number of magnets. The housing and the plurality of magnets are integrally formed. The movable module is movably retained within the case, and includes a barrel and a coil coupled to the barrel. When electric current is applied to the coil, the coil generates a magnetic field and the magnetic field repels the magnets, thereby driving the movable module to move. | 08-29-2013 |
20130241318 | VOICE COIL MOTOR - 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. | 09-19-2013 |
20130249323 | ELECTRODYNAMIC ACTUATOR - An electrodynamic actuator ( | 09-26-2013 |
20130264892 | LENS DRIVING MOTOR AND ELASTIC MEMBER OF THE SAME - Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (−) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient. | 10-10-2013 |
20140049122 | ELECTRODYNAMIC ACTUATOR AND ELECTRODYNAMIC EXCITATION DEVICE - A linear actuator, comprising: a base; a fixed part support mechanism attached to the base; a fixed part elastically supported by the fixed part support mechanism; and a movable part driven to reciprocate in a predetermined drive direction with respect to the fixed part, wherein the fixed part support mechanism comprises: a movable block attached to the fixed part; a linear guide that couples the movable block with the base to be slidable in the predetermined drive direction; and an elastic member that is disposed between the base and the movable block and prevents transmission of a high frequency component of vibration in the predetermined drive direction. | 02-20-2014 |
20140077628 | VIBRATION GENERATOR - A vibration generator includes a tubular magnetic case, an end cover holding a first bearing metal, a second bearing metal held in a burring portion of the bottom plate of the case, a non-magnetic movable thrust shaft that is inserted in an axially movable manner spinning the first and second bearing metal, and first to third toroidal coils connected and fixed at the inner circumference of the case. The vibration generator further includes a first annular pole piece fixed to the movable thrust shaft, a first and a second tubular permanent magnet of axial magnetization, a second annular pole piece and third annular pole piece, first and second wight body fixed at both ends of the movable thrust shaft outside the case, a first coil spring between the end cover and the first wight body, and a second coil spring between the bottom plate and the second wight body. | 03-20-2014 |
20140097707 | VOICE COIL MOTOR - The present invention provides a voice coil motor comprising a carrier, upper and lower spring plates, magnets, a base and a conductor. The carrier comprises a main body and a coil surrounding said main body. The upper spring plate is provided on the top of the main body and the lower spring plate is provided on the bottom of the main body. The lower spring plate comprises a lower securing portion and a lower actuating portion; the lower actuating portion is adjacent to the bottom of the base. The magnets are arranged outside of the coil; the conductor between the lower spring plate and the base comprises an attachment plate and two conductive legs. The attachment plate is attached to the lower securing portion and the two conductive legs are integrally formed with the attachment plate such that assembly of the voice coil motor is greatly facilitated. | 04-10-2014 |
20140103747 | VOICE COIL MOTOR, COIL BLOCK FOR VOICE COIL MOTOR, METHOD OF MANUFACTURING THE COIL BLOCK, AND VOICE COIL MOTOR HAVING THE COIL BLOCK - A VCM (voice coil motor) is disclosed, the VCM comprising: a bobbin formed with a support unit protruded from a periphery of a body at a bottom portion of the body, and a recess unit partially removed at the support unit; and a coil block supported by the support unit and including a plurality of coil layers wound at a periphery of the bobbin, wherein first and second distal ends of the coil block pass through the recess unit. | 04-17-2014 |
20140159511 | LINEAR VIBRATION MOTOR - Disclosed herein is a linear vibration motor including: a stator part having an internal space formed therein and including a main magnet mounted therein; a vibrator part including a coil disposed to face the main magnet and accommodated in the internal space of the stator part; and an elastic member connecting to the stator part and the vibrator part to each other, wherein the vibrator part further includes an auxiliary magnet disposed to face the main magnet. | 06-12-2014 |
20140252887 | SYNTHETIC JET ACTUATOR MOTOR EQUIPPED WITH MEANS FOR MAGNETIC FLUX PROFILING - A synthetic jet actuator is provided which includes a voice coil, a yoke consisting of a back iron ( | 09-11-2014 |
20140306555 | VOICE COIL MOTOR ASSEMBLY - A voice coil motor assembly includes a coil support, a coil wound on the coil support, and two opposing lower elastic plates disposed on an upper part of the coil support. The outer edge of an upper flange of the coil support has at least two opposing protrusions which are arranged radially. The coil has a head end and a tail end which are respectively wound on the two protrusions. The two lower elastic plates are respectively connected with the coil wound on the two protrusions by welding. To prevent the head end from slanting, the lower elastic plates are mounted on the coil support through the operation of an automation apparatus to be soldered with the coil wound on the protrusions. The connection of the coil and the lower elastic plates is firm, without the problem of disconnection, to ensure the quality of the product of the voice coil motor assembly. | 10-16-2014 |
20140375147 | ACTUATOR - An actuator may include a drive coil, a drive magnet part, a coil holding body and a magnet holding body. The coil holding body may include a tube part around which the drive coil is wound, and the drive magnet part may include two drive magnet pieces whose opposed faces are magnetized in the same magnetic pole. The coil holding body may be linearly and relatively movable to the magnet holding body. The magnet holding body may include an opening part formed in one of the two end face parts structuring the magnet holding body. The coil holding body may include a protruded part which is protruded to an outer side through the opening part, the protruded part may formed so as to extend over the tube part, and a flat part in a flat face shape may be formed in the protruded part. | 12-25-2014 |
20150028696 | Electromechanical Actuator to Reduce Heating Effects - The application describes an electromechanical actuator for generating a mechanical force to be transferred to an apparatus. The electromechanical actuator comprises an electromagnetic coil, a connecting member, and a magnet. The connecting member is mechanically coupled between the electromagnetic coil and the apparatus and is configured to transfer the mechanical force from the electromagnetic coil to the apparatus. The magnet is disposed between the electromagnetic coil and the apparatus and includes a channel in which the electromagnetic coil is disposed, the channel having a channel opening that faces away from the apparatus, the magnet further having a central hole through which the connecting member extends. | 01-29-2015 |
20150061415 | Voice Coil Motor - Disclosed is a voice coil motor, the motor including a rotor having a cylindrical bobbin that has a support block protruding from an upper end of an outer circumference thereof and a coil block that is coupled to the outer circumference of the bobbin in a direction from a lower surface to an upper surface of the bobbin and is supported by the support block, a stator having a magnet facing the coil block and a yoke holding the magnet, elastic members coupled to upper and lower surfaces of the bobbin, respectively, a base supporting the stator and the elastic members, and a foreign substance inflow-prevention portion formed on an upper surface of the base in such a way as to protrude around an opening formed in a central portion of the base in a shape of a closed loop. | 03-05-2015 |
20150069860 | Electrodynamic Actuator - An electrodynamic actuator, in particular for a microvalve or a micropump, includes a magnet arrangement for generating a magnetic field and a control element movable relative to the magnet arrangement. The control element includes an energizable air-core coil ( | 03-12-2015 |
20150364980 | VOICE COIL MOTOR - A voice coil motor includes a base, a first resilient member, a movable member, a wire coil, a second resilient member, a housing, and a group of magnets. The base includes a through hole, a circular groove surrounding the through hole and guide poles extending away from the base. The first resilient member includes a number of guide holes arranged at a peripheral. The movable member includes a receiving through hole for receiving a lens module, a top end and a bottom end, the moveable frame is fixed with the first resilient member and suspended above the circular groove. The wire coil surrounds the movable member. The second resilient member locates on the top end of the moveable frame. The housing receives the base. Each magnets is fixed to the second resilient member, the magnets and the wire coil cooperatively generate a magnetic force for driving the movable member. | 12-17-2015 |
20160043622 | VOICE COIL MOTOR, COIL BLOCK FOR VOICE COIL MOTOR, METHOD OF MANUFACTURING THE COIL BLOCK, AND VOICE COIL MOTOR HAVING THE COIL BLOCK - A VCM (voice coil motor) is disclosed, the VCM comprising: a bobbin formed with a support unit protruded from a periphery of a body at a bottom portion of the body, and a recess unit partially removed at the support unit; and a coil block supported by the support unit and including a plurality of coil layers wound at a periphery of the bobbin, wherein first and second distal ends of the coil block pass through the recess unit. | 02-11-2016 |
20160093428 | PERIODIC MAGNETIC FIELD GENERATOR AND ACTUATOR EQUIPPED WITH SAME - The periodic magnetic field generator includes a flat-shaped first yoke, and a plurality of main permanent magnets, an auxiliary permanent magnet, and a side permanent magnet on the first yoke. The plurality of main permanent magnets are magnetized in a first direction of generating magnetic fields, the direction being perpendicular to the first yoke, and disposed such that orientations of the magnetization become opposite alternately in the first direction. The auxiliary permanent magnet is magnetized in a second direction perpendicular to side faces of the plurality of main permanent magnets, and placed between the side faces of the main permanent magnets. The side permanent magnet is magnetized in a third direction perpendicular to the first direction, and disposed so as to cover end faces of the main permanent magnets and the auxiliary permanent magnet, the end faces being perpendicular to the side faces of the main permanent magnets. | 03-31-2016 |
20160118873 | VOICE COIL MOTOR - The present disclosure relates to a voice coil motor. The voice coil motor includes a base, an adjustment member, a first elastic member, a lens holder, a coil, at least one magnet, and a second elastic member. The base defines a through hole. The adjustment member is arranged in the through hole and is able to move along a central axis of the through hole relative to the base. The first elastic member is fixed on the base. The lens holder is fixed on the first elastic member. The coil is arranged surrounding an outer surface of the lens holder. The at least one magnet is arranged at an outer side of the coil. The second elastic member including an inner ring, the lens holder is fixed on the inner ring opposite to the first elastic member. | 04-28-2016 |
20160380524 | FLAT VOICE COIL MOTOR - A flat voice coil motor, including a coil unit and two primary magnetic pole units exerting an Ampere force on the coil unit. The coil unit includes a small, weak magnet, and the force exerted by the two primary magnetic pole units on the small, weak magnet is a vertically upward resultant force. By arranging the small, weak magnet in the coil unit, magnetic repulsion or attraction forces between the small, weak magnet and the primary magnetic pole units always ensure a vertically upward force on the coil unit, thereby achieving gravity compensation. In addition, this arrangement is achieved simply by replacing an internal portion of the coil unit with the small, weak magnet, which neither has influence on the Ampere force acting on a coil in the coil unit nor adversely leads to motor overheating caused by a structural addition. | 12-29-2016 |
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