Abstract: A back yoke of a vibration motor has a rectangular top surface portion, a long side protrusion portion that protrudes downward from a long side portion of the top surface portion, and a short side protrusion portion that protrudes downward from a short side portion of the top surface portion. The short side protrusion portion has a protrusion amount smaller than that of the long side protrusion portion. A portion of a lead wire extending from the short side of a coil is disposed below the short side protrusion portion.

Abstract: The present disclosure provides a vibration motor. The vibration motor includes a housing with side walls; a vibration unit accommodated in the housing; a driving device; and an elastic member elastically supporting the vibration unit in the housing. The vibration unit includes a first surface and a second surface connecting the first surface. The elastic member includes a first fixed section, extension sections extending from two sides of the first fixed section and surrounding the second surface and a second fixed section connecting to the extension section and fixed on the side wall away from one side of the first fixed section. The elastic member includes a first elastic member and a second elastic member opposite to the first elastic member. The first elastic member and the second elastic member are respectively fixed on two first surfaces of the vibration unit.

Abstract: An electronic device is configured to provide haptic feedback to a user based on an input action associated with an input device. The electronic device includes a haptic engine operably connected to a processing device. The haptic engine includes an electromagnetic actuator that detects an input action associated with the input device. The electromagnetic actuator also produces a haptic output in response to the detection of the input action.

Abstract: According to an embodiment of the present disclosure, provided are a vibration output device and a portable electronic apparatus outputting vibration.

Abstract: An electromechanical transducer includes: a structural portion configured such that two pairs of magnets magnetized in opposite directions, a yoke configured to guide magnetic fluxes from the magnets, and a coil configured to receive a supplied electric signal are located integrally; an armature having an inner portion penetrating an internal space of the structural portion and outer portions protruding from the inner portion toward both sides in a first direction, forming, together with the structural portion, a magnetic circuit through regions of the inner portion facing the two pairs of magnets, and configured to displace in a second direction perpendicular to the first direction by magnetic force of the magnetic circuit; and a pair of elastic members each located on both sides of the armature in the second direction, and configured to provide, to the armature, restoring force according to relative displacement of the armature corresponding to the structural portion.

Abstract: The present invention discloses a vibration motor and a portable device. The motor comprises: a housing, comprising an upper cover and a lower housing connected to each other, an FPCB being inserted in the lower housing, a cavity being arranged inside the housing, and a coil and a vibration system being accommodated in the cavity, wherein the vibration system comprises a vibrator and an elastic support, a magnetic gap is arranged in the vibrator, a first end of the elastic support is connected to the vibrator, and a second end of the elastic support is connected to the housing; and a first end of the coil is fixed at the lower housing, a second end of the coil is inserted in the magnetic gap, and the coil is in signal connection with an external circuit through the FPCB.

Abstract: The present invention discloses a linear vibration motor. The linear vibration motor comprises: a stator assembly including a shell, a coil and a central support, wherein the shell is provided with a cavity therein and includes a shell wall in parallel to a direction of vibration, and the coil and the central support are located in the cavity, the coil being configured on the shell wall and the central support being configured in the intermediate portion of the shell wall to connect a resilient element; a vibrator assembly including a permanent magnet and a counterweight portion, the permanent magnet and the counterweight portion being connected together; and resilient elements, through which the vibrator assembly is suspended within the cavity, wherein the resilient elements comprise a first end and a second end arranged opposite to each other in the direction of vibration, the first end being connected to the central support and the second end being connected to the vibrator assembly.

Abstract: A linear vibration motor comprises a vibrator and a stator disposed parallel to the vibrator, the vibrator comprising a weight block and a vibration block embedded in the weight block, and the stator comprises stator coils and a magnetic conductive cores disposed in the stator coil, wherein the vibration block comprises at least two magnetic members arranged in a row and magnetic reinforcement members disposed between adjacent magnetic members, and the magnetic members and the magnetic reinforcement members are permanent magnets; adjacent ends of each two adjacent magnetic members have the same polarity; and the magnetization direction of the magnetic reinforcement member is perpendicular to that of the magnetic member. The linear vibration motor can increase the magnetic lines of force passing through the stator coil, thereby intensifying the vibration effect of the product.

Abstract: A linear vibration motor includes a vibration block having permanent magnets and magnetic conductive yokes between adjacent permanent magnets; and a stator having stator coils arranged corresponding to the vibration block and magnetic conductive cores in the stator coils, a magnetic conductive brush being fixed on the magnetic conductive cores and a brush head of the brush being in elastic contact with the magnetic conductive yokes; or, a magnetic conductive brush being fixed on the magnetic conductive yokes and the brush head of the brush being in elastic contact with the magnetic conductive cores. The magnetic field lines generated by the vibration block can be concentrated to be conducted to the stator coils, thereby maximizing the effective magnetic field of the vibration block to improve the acting force between the vibrator and the and obtain an intensified vibration effect.

Abstract: The present application provides a linear vibration motor, including a base, a vibrating unit and an elastic member. The elastic member includes a first elastic member and a second elastic member, the base includes two side plates facing toward each other along the vibrating direction of the vibrating unit, the first elastic member includes a first fixing arm fixed at the vibrating unit, two first elastic arms extending from the first fixing arm and two first connecting arms bending and extending from ends of two first elastic arms; the second elastic member includes a second fixing arm fixed at the vibrating unit, two second elastic arms bending and extending from two ends of the second fixing arm and two second connecting arms extending from the two second elastic arms; and the two first connecting arms and two second connecting arms are fixed at the two side plates, respectively.

Abstract: The present disclosure provides a linear vibration motor, including: a base, a vibrating unit and an elastic member. The elastic member comprises a first elastic member and a second elastic member. The first elastic member comprises a first fixing arm, two first elastic arms respectively extending from the first fixing arm, two first connecting arms respectively extending from the two first elastic arms, and two first avoiding holes penetrating through the first fixing arm; the second elastic member comprises a second fixing arm, two second elastic arms respectively extending from the second fixing arm, and two second connecting arms respectively extending from the two second elastic arms, the first avoiding holes are respectively arranged directly facing the two second connecting arms. Comparing with the prior art, the linear vibration motor of the present disclosure can be conveniently assembled, and has good vibration property and high reliability.

Abstract: A linear vibration motor, including: a base, a vibrating unit, an elastic member, a first stopper and a second stopper. The elastic member includes two elastic members mutually spaced and arranged by stacking. Each elastic member includes a fixing arm fixed on the vibrating unit, two elastic arms bending and extending from the fixing arm, and two connecting arms respectively bending and extending from ends of the elastic arms, the connecting arms are respectively fixed on the base; the first stopper is fixed at a side of the fixing arm away from the vibrating unit; the second stopper is fixed on a side of the connecting arm close to the vibrating unit; the first stopper and the second stopper are mutually spaced and an orthographic projection of the first stopper along the vibrating direction at least partially falls into the second stopper.

Abstract: A first elastic member includes a first fastening portion, a second fastening portion, and a first coupling portion. A second elastic member includes a third fastening portion, a fourth fastening portion, and a second coupling portion. The first fastening portion, the second fastening portion, the third fastening portion, and the fourth fastening portion extend in a lateral direction. The first fastening portion and the second fastening portion face each other in a longitudinal direction, perpendicular to the lateral direction. The third fastening portion and the fourth fastening portion face each other in the longitudinal direction. The first coupling portion and the second coupling portion include plane portions extending in the longitudinal direction when a vibrating body has zero displacement. The first fastening portion to the fourth fastening portion extend in the lateral direction without being bent from coupled portions between themselves to a first curve to a fourth curve.

Abstract: An electronic device may have an electrical component with a moving portion. The moving portion of the electrical component may include a moving mass and may include coils or other circuitry coupled to the moving mass. The moving mass may be supported within a support structure such as a housing structure. Springs may be coupled between walls in the housing structure and end portions of the moving mass. The coils or other circuitry on the moving mass may be coupled to flexible printed circuit cables. The flexible printed circuit cables may be coupled to the coils at the ends of the moving mass adjacent to the springs. The flexible printed circuit cables may have localized stiffeners that help prevent damage to metal traces in the cables during cable bending. The cables may have U-shapes or other suitable shapes.

Abstract: A vibration actuator having a stationary element; a movable element that is supported elastically so as to enable vibration on the stationary element; and a driving source for causing reciprocating vibration of the movable element in relation to the stationary element, wherein: the movable element comprises an opposed face that opposes an opposing face of the stationary element; a magnetic fluid that has viscosity is filled into a gap between the opposing face and the opposed face and is attracted magnetically to at least either the opposing face or the opposed face; and on the other of the opposing face or the opposed face, a holding region for retaining the magnetic fluid is provided, and a lipophobic surface, for repelling the magnetic fluid is provided so as to surround the holding region.

Abstract: A vibration motor includes a stationary portion including a casing and a coil; a vibrator including a magnet, and supported to be capable of vibrating in one direction with respect to the stationary portion; and an elastic member arranged between the stationary portion and the vibrator. The magnet is arranged on an upper side of the coil in a vertical direction perpendicular to the one direction. The elastic member includes a fixing portion fixed to a side surface of the vibrator, and a top plate portion joined to the fixing portion, and fixed to an upper surface of the vibrator. The top plate portion is arranged opposite to the magnet in the vertical direction.

Abstract: This disclosure provides systems, methods and apparatus for mitigating electromagnetic radiation emissions. In one aspect, a power transfer device of a wireless electric vehicle charging (WEVC) system is provided. The power transfer device includes a ferrite material and at least one electrically conductive coil. The ferrite material and the at least one coil are configured to wirelessly transfer energy either from or to a second power transfer device of the WEVC system. The power transfer device further includes at least one shield comprising a plurality of electrically conducting regions and one or more electrically insulating regions. The plurality of electrically conducting regions and one or more electrically insulating regions are configured to mitigate electromagnetic radiation emissions from the WEVC system that do not contribute to the wireless power transfer between the at least one electrically conductive coil and the second power transfer device.

Abstract: A vibration motor includes a stationary portion including a base and an annular coil; a vibrator including a magnet, and supported to be capable of vibrating in one direction with respect to the stationary portion; and an elastic member arranged between the stationary portion and the vibrator. The base includes a columnar portion arranged to project upward in a vertical direction perpendicular to the one direction. An outside surface of the columnar portion is arranged opposite to an inside surface of the coil.

Abstract: This abstract replaces all prior versions of abstract in the application. The linear vibration motor comprises a movable element that is equipped with a magnet portion and a weight portion; a frame that contains the movable element; a coil that is secured to the frame and that drives the magnet portion along an axial direction; an elastic member that is disposed within the frame and that applies, to the movable element, an elastic force that repels the driving force that is applied by the magnet portion; and a guide shaft 8 that is borne on the frame and that guides reciprocating motion of the movable element along the axial direction, wherein: the elastic member rotationally biases the movable element in one direction around the guide shaft 8, and the frame comprises a slide bearing portion (a slide plate) for bearing slidably a portion of the rotationally biased movable element.

Abstract: A vibration motor includes a stationary portion including a casing and a coil; a vibrator supported to be capable of vibrating in one direction with respect to the stationary portion; and an elastic member arranged between the stationary portion and the vibrator. The vibrator includes a magnet arranged on an upper side of the coil in a vertical direction perpendicular to the one direction, and a weight arranged to hold the magnet. The weight includes a first weight portion in the shape of a plate, and at least one second weight portion arranged to extend downward from a lower surface of the first weight portion. The at least one second weight portion and the coil are arranged opposite to each other in the one direction.

Abstract: A vibration motor includes a stationary portion including a casing and a coil; a vibrator including a magnet, and at least one elastic member. The magnet is arranged on an upper side of the coil. The stationary portion includes at least one projecting portion arranged to project in the vertical direction. A portion of the at least one projecting portion is arranged opposite to a portion of the vibrator in the one direction. The at least one elastic member includes a plate spring portion arranged to support at least one of both ends of the vibrator with respect to the one direction. The plate spring portion includes a decreased width portion and an increased width portion, the decreased width portion being above or below a corresponding one of the at least one projecting portion when viewed from one side in the one direction.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing, a substrate engaging with the housing, a vibration unit received in the housing, an elastic member suspending the vibration unit, and a coil assembly interacting with the vibration unit. The vibration unit further includes a slot for receiving a fixing part of the elastic member, and the slot includes a first part having a first width and a second part having a second width greater than the first width, and the first part is relatively closer to a distal end of the second fixing part.

Abstract: A haptic actuator may include a housing, coils carried within the housing, and a field member moveable within the housing between the coils and including at least one permanent magnet. A controller may be coupled to the coils and configured to sense a respective back electromotive force (EMF) value of each of the coils and determine a position of the field member in dimensions based upon the back EMF values and motor constant values.

Abstract: The present disclosure relates to a vibration motor, comprising a housing, a vibrator, an elastic member, a first block and a second block; the elastic member comprises first elastic member and second elastic member facing toward each other and each comprises a first fixing portion, two extending portions and two second fixing portions, the first fixing portion is fixed on the first surface, the two extending portion extend from the first fixing portion along two opposite directions and surrounds the second surface, the two second fixing portions are fixed on the side wall away from the first fixing portion; the first block is on a side of the first fixing portion corresponding to the side wall, the second block is on the side wall, faces towards the first block and is spaced from the first block. The second block is adjacent to the second fixing portion and is between the two second fixing portions.

Abstract: The present application provides a linear vibration motor, including a base, a vibrating unit and an elastic member. The elastic member includes a first elastic member and a second elastic member, the first elastic member includes a first fixing arm, two first elastic arms and two first connecting arms; the two first elastic arms bend and extend from two ends of the first fixing arm, respectively; the two first connecting arms bend and extend from the two first elastic arms, respectively; each of the first elastic member and the second elastic member is arranged in central symmetry with respect to a central axis which goes through a geometric center of the vibrating unit and perpendicular to the vibrating direction. As compared with relevant art, the linear vibration motor of the present application has advantages of simple and high-efficient assembling, good vibrating performance and high reliability.

Abstract: A vibration motor is disclosed. The vibration motor includes a vibration part including a weight and a magnet accommodated in the weight; a fixation part including a housing having an accommodation space, a circuit board fixed in the housing, and a coil opposed to the magnet and connected with the circuit board electrically, the housing including an upper cover, a lower cover opposite to the upper cover, and an outer frame forming the accommodation space with the upper and lower covers; an elastic connector having for elastically suspending the vibration part in the accommodation space of the housing; and an anti-drop protective structure arranged on the outer frame and applied to protection of the elastic connector from collision with the housing when the vibration motor drops.

Abstract: A vibrator includes a frame, a swing unit, and an elastic member. The swing unit is disposed within the frame and holds a magnet. The elastic member connects the swing unit and the frame. The swing unit is movable with respect to the frame while deforming the elastic member. The frame, the swing unit, and the elastic member are integrally molded with each other.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing, a substrate engaging with the housing, a vibration unit received in the housing, an elastic member suspending the vibration unit, and a coil assembly interacting with the vibration unit. The coil assembly includes a coil located between the first magnet assembly and the second magnet assembly, and a coil support carrying the coil. The coil support includes a lower part mounted on the substrate, an upper part for carrying the coil, and a middle part spacing the upper part from the lower part.

Abstract: The present invention is capable of increasing the thinness of a linear vibration motor equipped with a fixed shaft. The linear vibration motor is equipped with: a frame; one fixed shaft extending in one axial direction and affixed to the frame; a drive unit for driving a magnet in the one axial direction, and equipped with a coil affixed to the frame and the magnet, which is positioned so as to be parallel to the fixed shaft; a needle which is slidably supported in the one direction by the fixed shaft, and is equipped with the magnet and a spindle part connected to the magnet; and an elastic member for imparting an elastic force to the needle in opposition to the driving force of the drive unit, and positioned so as not to be coaxial with the fixed shaft.

Abstract: In a magnetic drive linear actuator, a load attachment portion is fixed to the lower side portion of the rectangular tubular coil frame of a mover, and a light-emitting portion of a position detection portion for detecting the movement position of the mover is fixed to the upper side portion of the coil frame. The load attachment portion and the upper side portion of the coil frame are mutually coupled through beam portions bridged there between. This makes it possible to prevent or suppress the behaviors of the load attachment portion and light-emitting portion from being shifted to each other during high-acceleration driving of the mover, thereby improving the responsiveness and positioning accuracy of the linear actuator.

Abstract: A linear vibration motor is disclosed, which comprises a housing having a receiving space; a vibrator unit received in the receiving space; an elastic members having one end connecting to the vibrator unit and another end connecting to the housing for suspending the vibrator unit in the receiving space; a first damping member arranged between the housing and one side of the elastic member; and a second damping member arranged between the vibrator unit and the other side of the elastic member.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing, a substrate engaging with the housing, a vibration unit received in the housing, an elastic member suspending the vibration unit, and a coil assembly interacting with the vibration unit. The elastic member includes a second fixing part having a first segment with a first width, a second segment having a second width smaller than the first width for forming a step, and the vibration unit includes a latch corresponding to and engaging with the step for positioning the elastic member.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing, a substrate engaging with the housing, a vibration unit received in the housing, an elastic member suspending the vibration unit, and a coil assembly interacting with the vibration unit. The vibration unit further includes a slot for receiving a fixing part of the elastic member, and the slot includes a volume recessed toward a direction far away from the fixing part.

Abstract: A vibration motor includes a fixation part having a housing forming an accommodation space and at least one coil fixed in the accommodation space, a vibration part including a magnet and a weight for accommodating the magnet, an elastic connecting part for suspending the vibration part in the accommodation space; a damping element accommodated in the weight; a limiting column penetrating the damping element and extending along a direction from the magnet to the coil, two ends of the limiting column being fixed to the housing.

Abstract: A vibration motor is provided in the present disclosure. The vibration motor includes a housing, a magnet module received in the housing and fixedly connected with the housing, the magnet module comprising a main magnet unit as well as a first vice magnet unit and a second vice magnet unit symmetrically disposed on two sides of the main magnet unit, and the main magnet unit being spaced from the first vice magnet unit and the second vice magnet unit to form magnetic gaps, a vibration module, comprising a coil inserted into the magnetic gaps and masses for clamping the coil, and an elastic support, configured for connecting the coil and the masses to suspend the vibration module in the housing. A stop module for limiting the amplitude of the masses is disposed between the masses and the first vice magnet unit and between the masses and the second vice magnet unit.

Abstract: A linear vibration motor is provided in the present disclosure the linear vibration motor includes a cabinet having a receiving space, a first magnet received in the accommodation space and fixed in the cabinet; a magnetic core fixed in the cabinet, opposite to the first magnet, with a coil winded on the magnetic core, a vibrating part received in the receiving space, suspended between the first magnet and the magnetic core; and a supporting part for suspending the vibrating part, and the vibrating part includes a third magnet repulsing the first magnet, the coil having a changing current to magnetize the magnetic core to repulse with the third magnet.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing, a substrate engaging with the housing, a vibration unit received in the housing, an elastic member suspending the vibration unit, and a coil assembly interacting with the vibration unit. The vibration unit includes an avoidance corresponding to the coil assembly for preventing the vibration unit interfering with the coil assembly.

Abstract: A vibrating motor is provided in the present disclosure. The vibrating motor includes a shell, a vibrating module, a magnet module, a coil module and an elastic assembly. The shell provides a receiving cavity for receiving the vibrating module. The vibrating module includes a first vibrating member and a second vibrating member, and the magnet module receives in the vibrating module. The coil module is disposed under the magnet module; the elastic assembly includes a pair of a first elastic parts and a second elastic part. The first elastic parts suspend the vibrating module in the shell; and the second elastic part connects the first vibrating member with the second vibrating member. The magnet module is received in at least one of the first vibrating member and the second vibrating member.

Abstract: A linear vibration motor includes a housing; an elastic connecting part connected with the housing; a vibrator supported by the elastic connecting part and suspended in the housing; a first permanent magnet positioned by an internal wall of the housing; and a second permanent magnet assembled with the vibrator and facing the first permanent magnet. The first permanent magnet and the second permanent magnet are separated from each other. The first permanent magnet and the second permanent magnet are such configured that the same polarities of the first and second permanent face to each other for producing a repulsive force between the vibrator and the housing.

Abstract: An electromagnetic actuator for a medical instrument including: a stator; and a movable element, at least partly composed of a paramagnetic and/or a ferromagnetic material, and which can be reversibly moved from a first to a second position by the application of a switchable magnetic field, wherein the stator and the movable element have annular distal and proximal pole shoes corresponding to each other, wherein the distal pole shoes and/or the proximal pole shoes of the stator and the movable element are aligned with each other in an overlapping manner in the first and/or the second position, and the distal pole shoes and/or the proximal pole shoes of the stator and the movable element have a structure in the circumferential direction on the surfaces of pole shoes facing each other, with the structures corresponding to each other.

Abstract: A vibration motor includes a fixed member, a vibration unit, and an elastic member. The vibration unit includes a first weight, a second weight, and a magnet sandwiched by the first and second weights. The motor further includes a first positioning guiding member including a first weight guiding rail, a first base guiding rail, a first movement rail formed by the first weight guiding rail and the first base guiding rail, and a plurality of magnetic bodies disposed at two sides of the first movement rail; a second positioning guiding member including a second weight guiding rail, a second base guiding rail, a pair of second movement rails formed by the second weight guiding rail and the second base guiding rail, and a magnetic body disposed between the second movement rails.

Abstract: A vibration motor, comprising a base portion which expands perpendicular to a vertical center axis, a magnet portion which is securely mounted on an upper side of the base portion in a vertical direction, a vibrator portion which is disposed around the magnet portion and vibrates vertically, a cover portion which is fixed to the base portion and covers upper and side portions of the magnet portion and the vibrator portion, an elastic member which is disposed between an upper inner surface of the cover portion and a top portion of the vibrator portion, and a circuit board which is flexible and coupled to a top surface of the base portion and a bottom portion of the vibrator portion, wherein the vibrator portion includes a coil portion which faces the magnet portion in a circumferential direction, and a mass portion which is fixed to the coil portion, the base portion includes a base protrusion which protrudes from the cover portion to a radially outer side, and the circuit board includes a lower terminal porti

Abstract: A downhole sensor package for detecting one or more thermophysical properties of a downhole fluid, comprising a sensor housing having a fluid input port and a fluid output port; an inner flow tube located within and axially defined with the sensor package housing; an outer flow annulus defined between the inner flow tube and the sensor housing, wherein the inner flow tube is in fluid communication with the outer flow annulus; and a vibration source and a vibration detector engaging the inner flow tube; and methods for using the same are disclosed.

Abstract: A linear vibrating motor is provided in the present disclosure. The linear vibrating motor includes a shell, a vibrating unit, a coil module and an elastic module. The shell provides a receiving cavity, the vibrating unit is received in the receiving cavity and includes a magnet module; the coil module surrounds the magnet module for driving the vibrating unit to vibrate; the elastic module includes a pair of elastic members for suspending the vibrating unit. Each of the elastic members comprises an elastic part for providing an elastic force to the vibrating unit in a vibrating direction thereof, and an elastic deforming capability of the elastic part in the vibration direction is greater than that in other directions.

Abstract: A vibrating motor is provided in the present disclosure. The vibrating motor includes a shell providing a receiving cavity, a vibrating unit received in the receiving cavity, a pair of elastic members for elastically suspending two opposite ends of the vibrating unit to the shell, and a linking module. The linking module includes a pair of linking units rotably engaged with the two opposite ends of the vibrating unit respectively. Each of the linking units includes a linking rod and a guiding pin fixed to the shell. An end of the linking rod is engaged with the guiding pin, and the other end of the linking pod is engaged with a corresponding end of the vibrating unit.

Abstract: A method for generating a vibration by a device by using an adjective is provided. The method includes setting at least one fundamental frequency and at least one overlap ratio corresponding to a certain adjective and a degree value of the certain adjective, receiving at least one user input for inputting an adjective and a degree value of the input adjective, and generating at least one vibration corresponding to the input adjective and the degree value of the input adjective based on the setting. The generated at least one vibration has a fundamental frequency and an overlap ratio corresponding to the input adjective and the degree value of the input adjective.

Abstract: A micro vibration motor, includes: a housing having an accumulating space, an elastic support, a vibrator suspended in the accommodation space by the elastic support, and including an upper vibrator in which a magnet is accommodated and a lower vibrator which is parallel to the upper vibrator, the lower vibrator being provided with coils for driving the magnet to vibrate; and a FPC for providing electric signals. The upper vibrator and the lower vibrator are supported by the elastic support including a fixation part connecting with the housing and an annular elastic arm extending from two ends of the fixation part; and the vibrator is surrounded by at least one part of the annular elastic arm and one end of the annular elastic arm is connected to the vibrator.

Abstract: 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.

Abstract: Disclosed is a linear vibration generating device including: a stator including a bracket on which a coil is seated, and a case made of a magnetic material which is engaged to the bracket to form an inner space; a vibrator including a permanent magnet for generating a vibration force in cooperation with the coil, and a weight enclosing a circumference of the permanent magnet; a resilient member which is positioned between the vibrator and the stator to resiliently support vertical oscillation of the vibrator; and a plate which is positioned between the resilient member and the vibrator.

Abstract: Disclosed is a linear vibration generating device including: a stator including a bracket on which a coil is seated, and a case made of a magnetic material which is engaged to the bracket to form an inner space; a vibrator including a permanent magnet for generating a vibration force in cooperation with the coil, and a weight enclosing a circumference of the permanent magnet; a resilient member which is positioned between the vibrator and the stator to resiliently support vertical oscillation of the vibrator; and a plate which is positioned between the resilient member and the vibrator