Abstract: In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, and a vibration generating device. The vibration generating device is fixed to the contact member or the housing. A gap is formed between a surface of the vibration generating device facing the housing and a surface of the housing facing the vibration generating device.

Abstract: A muzzle-mounted chronograph for measuring velocities of projectiles launched from firearms. The chronograph includes a sensor module and a controller. The sensor module includes a first and second coils and a device for applying a stable magnetic field to the first and second coils. The controller determines a velocity of a projectile passing by the first and second coils based on detected variations in magnetic fields at the first and second coils.

Abstract: An oscillatory linear actuator includes an electromagnetic core block including an electromagnet (electromagnetic part), and a magnetic block that holds permanent magnets so that the permanent magnets face the electromagnet with a predetermined space in between. The electromagnetic core block integrally includes a core, a coil bobbin, and a base, the core and the coil bobbin forming the electromagnet, and the base holding the core and the coil bobbin. The magnetic block includes the permanent magnets and a frame that holds the permanent magnets so as to allow the permanent magnets to oscillate freely and holds the electromagnetic core block. The frame has a guide portion that guides the electromagnetic core block to adjust a positional relation of the permanent magnets and the electromagnet, and the base is fixed to the frame inside the guide portion.

Abstract: The invention provides the submersible pumping apparatus comprising, united in a single housing, a filtration system for the inlet of a wellbore fluid, a gravity gas separation system, a head for attachment to a tubing, a double action pump, a linear driven electric motor, a hydro-protector, and a telemetry system. The linear electric motor comprises a fixed part, a stator with a dielectric liquid which surrounds the stator, and a movable part being a slider, comprising several sections spaced-apart from the central axis of a stator housing along a diameter, and is configured to reciprocate along a longitudinal axis. The double action pump comprises two plungers; movable parts of the pump, plungers, are mechanically connected with the slider sections; fixed parts of the pump, cylinders, are arranged as follows: one cylinder is in the central part of the motor stator, and the second cylinder is in the inner part of the hydro-protector.

Abstract: A linear vibrator having a flexible printed circuit board including a copper film pattern processed in a meander line pattern and, more particularly, a linear vibrator for solving a frequency interference problem between an electromagnetic structure and antenna disposed within a mobile device using a flexible printed circuit board (FPCB) including a copper film pattern processed in a meander line pattern in the linear vibrator. The linear vibrator can avoid resonant frequency interference through the copper film pattern having a frequency region out of the resonant frequency region of an antenna within a mobile device by processing the copper film pattern unique to an FPCB used in a linear vibrator.

Abstract: A linear vibration motor has a movable element including a magnet and a weight, and an elastic member are inserted into a frame. The frame supports the movable element so the movable element can freely slide axially; a coil fixed to the frame and drives the magnet axially; and an elastic member applying, to the movable element, an elastic force against the driving force of the magnet. The frame has a bottom surface plate with a bottom surface affixing the coil; an upper surface plate has an upper surface opposing the bottom surface; and a front surface plate facing the axially and supports the elastic member. The bottom surface plate has partial side surface portions that are respectively bent from both side edges of the bottom surface portion and in which an opening is formed in a central part of the partial side surface portions in the axial direction.

Abstract: A linear vibration motor comprises: a movable element that comprises a magnet portion, a weight portion, and a yoke; a frame for enclosing the movable element; a coil, secured to the frame, for applying a driving force to the magnet portion so as to cause the movable element to undergo reciprocating vibration along the axial direction; and an elastic member for applying, to the movable element, an elastic force that repels the driving force that is applied to the magnet portion, wherein: a magnetic material portion (a magnetic material piece) that extend along the direction of vibration of the movable element is provided on an inner surface of the frame, and the yoke has a raised portion near the magnetic material portion (the magnetic material piece).

Abstract: An oscillatory actuator has: a fixed body that has a planar part and a flat coil disposed on the planar part; and a movable body that has a magnet facing the coil and oscillates in a reciprocating manner in one direction relative to the fixed body above the planar part via cooperation between the coil and the magnet. The fixed body has a pair of linear bearings that are respectively disposed along both side surfaces extending in said one direction of the movable body and are equipped with balls capable of rolling and coming into contact with the respective side surfaces. The movable body is supported via the balls of the linear bearings so as to be able to oscillate in said one direction.

Abstract: A sound generator system of a vehicle is provided. The system includes a housing with an interior space formed therein and a cover that encloses the housing. An exciter is inserted into the interior space and includes yokes and a magnetic. A coil is positioned adjacent to the exciter and vibrates the exciter when current is applied. A main shaft has a first end connected to the housing a second end penetrating the cover, exposed to an outside, and penetrated and installed in the exciter and the vibration generated by the exciter if finally output. An elastic portion is installed adjacent to the exciter and delivers the vibration to the main shaft to remove removing a horizontal directional driving force of the exciter and prevent the exciter from contacting other components and enhances a vertical directional driving force of the exciter.

Abstract: An oscillator typically includes a rotatable drive shaft, at least two pivot members which rotate with the drive shaft, at least one oscillating member which is pivotable back and forth in an oscillating manner and at least one rod mounted on the at least one oscillating member which is movable in response to rotational and pivotal movement of the at least two pivot members so as to cause the oscillating member to pivot back and forth in an oscillating manner. At least one rotatable drive wheel may drive rotatable movement of the drive shaft. A drive mechanism may be used to drive rotation of the at least one drive wheel. At least one generating magnet may be mounted on the oscillating member and movable adjacent an electrically conductive coil for producing an electric current therein.

Abstract: A force sense generator includes a rotatable circular plate having a rotation axis at a center of gravity; a motor that drives the circular plate to be rotated; a cam formed at a surface of the circular plate so as to surround the rotation axis; an anchor that is reciprocated along a linear trajectory that is perpendicular to the rotation axis of the circular plate; and a follower provided at the anchor and is moved along the cam, the cam being configured to include a first angle range and a second angle range such that the anchor is moved in opposite directions at different accelerations when the follower moves within the first angle range and when the follower moves within the second angle range, respectively, while the circular plate is rotated in one direction.

Abstract: Disclosed is a linear vibration motor comprising a movable element that is equipped with a magnet and weights; a coil for applying a driving force on the magnet through the application of an electric current; a frame, wherein the coil is secured; a shaft, borne on or secured by the frame, for supporting the movable element so as to be able to vibrate along the axial direction; and coil springs, disposed between the movable element and the frame, for elastically supporting the vibration of the movable element along the axial direction, on both sides of the movable element in the direction of vibration, wherein the directions of winding of the coil springs are set so as to prevent rotational vibration, around the shaft, of the movable element that is vibrating reciprocatingly along the axial direction.

Abstract: A vibration motor includes a housing; a stator; an vibrator accommodated in the housing; an elastic piece suspending the vibrator in the housing; a protrusion protruding along the center axis from the hole wall of the accommodation hole and formed at a position on the mass block corresponding to and fit with the bending structure; at least two magnets fixed on one side of the first side walls far from the hole wall of the accommodation hole. The vibrator includes a mass block with an accommodation hole, a center axis passing through a geometrical center thereof along a vibration direction of the vibrator; and a yoke disposed along a hole wall of the accommodation hole. The yoke includes a first side wall, a second side wall, and bending structures.

Abstract: A vibration motor is provided in the present disclosure. The vibration motor includes a shell providing an accommodating space, and a vibrating system elastically suspended and accommodated in the accommodating space. The vibrating system includes a magnet assembly and a coil assembly arranged opposite to each other. The coil assembly includes a coil unit with a lead wire, and a first circuit board connected to the lead wire. The vibrating system further includes a second circuit board fixed to the shell, and a twist line unit connected between the first circuit board and the second circuit board.

Abstract: A linear vibrating motor is provided in the present disclosure. The linear vibrating motor includes a housing, a vibrator, a stator and an elastic part. The vibrator and the stator are received in the housing, the elastic part suspends the vibrator. The stator includes a coil and a coil support supporting the coil. The coil support includes a supporting plate, a pair of supporting arms and a pair of supporting legs. The supporting plate supports the coil, the pair of supporting arms extends from ends of the supporting plate respectively, and the pair of supporting legs extends from ends of the supporting arms respectively and is opposite to the supporting plate. The vibrator comprises a groove to receive the supporting plate, and the vibrator is partially positioned between the pair of supporting arms.

Abstract: A horizontal linear vibration motor for securing the straightness of a coil spring and preventing a driving unit, such as a mass body, from axially rotating around the axis of a shaft within a housing due to the rotational property of the coil spring by providing a coil and a magnet for generating a force that enables the reciprocating motion of the driving unit including the mass body and an anti-rotation member provided in the driving unit to slide and come into contact with the housing.

Abstract: A haptic actuator may include a housing having opposing ends and opposing sides extending therebetween. The haptic actuator may also include at least one coil carried by the housing and a field member having opposing ends and opposing sides extending therebetween. The haptic actuator may also include a respective flexure coupling each end of the field member to an adjacent end of the housing so that the field member is reciprocally movable within the housing responsive to the at least one coil over an operating range and while maintaining a respective sidewall clearance between each side of the field member and an adjacent side of the housing. At least one sidewall clearance restricting feature may be configured to restrict the sidewall clearance when the field member moves beyond the operating range when subject to mechanical shock.

Abstract: An electromagnetic converter that converts kinetic energy to electric energy, or converts electric energy to kinetic energy, includes a core configured to have a coil disposed; a magnet configured to be magnetically coupled with the core; a yoke configured to have the magnet disposed; a fixing portion configured to have the core and the yoke placed; and an elastic member configured to support the yoke, and to elastically deform so as to displace the magnet with respect to the core. Both ends of the elastic member are fixed to the fixing portion. The magnet and the yoke can rotate around an axis in an extending direction of the elastic member.

Abstract: According to one example, an ophthalmic surgical probe for treating an eye of a patient includes a body arranged for grasping by a surgeon and a cutting element extending distally from the body. The cutting element includes a sleeve member and an inner member disposed within the sleeve member, the inner member being movable axially with respect to the sleeve member. The probe also includes an actuating element configured to reciprocally move the inner member relative to the sleeve member. The actuating element includes a first coil secured within the body, a first magnet operatively secured to the inner member, and a second magnet that is not secured to the inner member, the second magnet being positioned and arranged to move in an opposite direction of the first magnet upon application of a voltage to the first coil.

Abstract: A voice coil motor (VCM) is disclosed, the VCM including: a stator including a magnet generating a first electromagnetic field; a mover including a bobbin formed with a hollow hole through which light passes and a coil formed on a periphery of the bobbin that generates a second electromagnetic field responsive to the first electromagnetic field; a base fixed at the stator and formed with an opening through which the light passes; and at least one elastic member elastically supporting the bobbin and forming a gap between the bobbin and the base when the coil is not applied with a current.

Abstract: A vibration motor includes a base portion arranged to extend perpendicularly to a central axis extending in a vertical direction; a magnet portion fixed above the base portion, and arranged to point in the vertical direction; a vibrating portion including a coil portion arranged radially opposite to the magnet portion, and arranged around the magnet portion to vibrate in the vertical direction; a cover portion arranged to cover upper and lateral sides of the magnet portion and the vibrating portion, and fixed to the base portion; an elastic member arranged around the magnet portion between an inner surface of an upper portion of the cover portion and an upper portion of the vibrating portion, and arranged to extend radially inward in a downward direction from the inner surface of the upper portion of the cover portion; at least one adhesive layer fixed to an upper surface of the vibrating portion, and arranged in a circumferential direction below the elastic member; and at least one viscous body in a paste, a

Abstract: A power generation device of the present invention includes: a first magnet member; a second magnet member having its N-pole reversely disposed to an N-pole of the first magnet member; a center yoke capable of horizontally shifting and disposed between the first magnet member and the second magnet member; a coil disposed at the outer circumference of the center yoke; and a drive member horizontally shifting while holding the first magnet member and the second magnet member. The drive member and the center yoke horizontally shift in a first direction. After the horizontal shift of the center yoke in the first direction stops, the drive member further horizontally shifts in the first direction, and the center yoke horizontally shifts in a second direction opposite to the first direction.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing having a receiving space; a vibration unit accommodated in the receiving space, the vibration unit including a main weight, a main pole plate, and a main magnet carried by the main pole plate, the main weight comprising a first weight, and a second weight opposed to and apart from the first weight; and a plurality of elastic members suspending the vibration unit in the receiving space. The main magnet is sandwiched between the first and second weights, and two ends of the main pole plate are respectively connected to the first weight and the second weight.

Abstract: The present invention relates to a haptic actuator, and the vibrating body includes a first magnet and a second magnet that are disposed on one end of the coil member in the vertical direction to be spaced apart from each other; a third magnet and a second magnet that are disposed on the other end of the coil member in the vertical direction to be spaced apart from each other; a first magnetic body that is mounted on one end of the first magnet and the third magnet in the horizontal direction; a second magnetic body that is mounted on the other end of the second magnet and the fourth magnet in the horizontal direction; and the first weight and the second weight that is mounted the first magnetic body and the second magnetic body respectively, the polarities of the first magnet and the second magnet having a north pole in the direction facing each other and a south pole in the opposite direction thereof, and the polarities of the third magnet and the forth magnet having a north pole in the direction facing eac

Abstract: A vibration generating device has a vibration generating member that causes vibration in a vibration direction, a vibration transmitting member, and a base body. The vibration generating member has a first yoke and a second yoke spaced in the vibration direction so as to face each other, a coil that generates magnetism, and a support body that supports the first yoke. A first gap is formed between the first vibration-side opposite surface of the first yoke and the second vibration-side opposite surface of the second yoke; these surfaces face each other in the vibration direction. A second gap is formed between the first orthogonal-side opposite surface of the first yoke and the second orthogonal-side opposite surface of the second yoke; these surfaces face each other in an orthogonal direction orthogonal to the vibration direction. The first gap is narrower than the second gap.

Abstract: A linear vibrator includes a stator having a housing including a receiving space; a moveable unit received in the receiving space; an elastic member having one end connecting to the moveable unit and another end connecting to the stator for suspending the moveable unit in the receiving space; and a cushion arranged between the moveable unit and the housing, the cushion comprising a plurality of parts having different stiffness.

Abstract: The present disclosure is related to a vibration motor. The vibration motor includes a housing, a vibrator, a stator and an elastic part. One of the vibrator and the stator includes a coil, and the other includes a magnet opposite to the coil. The elastic part includes a first fixation part, a second fixation part and a connecting part. A weight includes a first side and a second side and a gap part formed by denting towards the direction far from a first side wall from the first side. The weight further includes a welding part protruding from the center of the gap part and extends to the edge of the gap part. The durability of the elastic part is accordingly increased, and the reliability of the product is thus improved.

Abstract: According to embodiments of the disclosure, a downhole tool for taking acoustic measurements in a wellbore is provided. The tool may have an acoustic dipole transmitter with a piston made from a soft magnetic material, mounted on a centering spring between the first coil and the second coil, which moves the piston bi-directionally along a longitudinal axis when energized. The tool may also have a feedback winding on at least one of the first or second coils. The tool may also have a circuit for energizing the first and second coils which includes an input for receiving a signal responsive to the position of the piston relative to the coils and a processor for determining an output waveform used to generate an acoustic signal.

Abstract: A linear vibration motor is disclosed. The linear vibration motor, includes a housing provided with an accommodation space; a vibrator accommodated in the accommodation space; and an electromagnet accommodated in the accommodation space. The vibrator includes a weight having a through-hole and a plurality of permanent magnets engaging with an inner wall of the through-hole. A number of elastic connecting parts are accommodated in the accommodation space, one end of the elastic connecting part connected with the housing and the other end connected with the weight for suspending the vibrator in the accommodation space. The electromagnet includes an iron core and a coil around the iron core for producing magnet fields interacting with the permanent magnets further for producing attracting and repelling force to drive the vibrator to vibrate.

Abstract: A vibration motor includes a housing having a receiving space and a vibration unit. The vibration unit includes a main weight, a main pole plate, and a main magnet carried by the main pole plate. The main weight includes a first weight, and a second weight opposed to the first weight, the main magnet being sandwiched between the first and second weights, and two ends of the main pole plate respectively connected to the first weight and the second weight. The vibration unit further includes an auxiliary weight, an auxiliary pole plate, and an auxiliary magnet carried by the auxiliary pole plate. One of the main weight and the auxiliary weight forms a recess, and another forms a flange extending along a vibration direction corresponding to the recesses for engaging the main weight and the auxiliary weight.

Abstract: Provided is a linear compressor. The linear compressor includes a cylinder defining a compression space for a refrigerant, a piston reciprocated in an axis direction within the cylinder, and a linear motor providing power to the piston. The linear motor includes an inner stator disposed outside the cylinder, the inner stator including a center core and a side core disposed on at least one side of the center core, an outer stator disposed to be spaced outward from the inner stator in a radius direction, and a magnet movably disposed in an airgap defined between the inner stator and the outer stator. The side core includes a core body and a lead-out guide device coupled to the core body to expose or lead out a power line to the outside of the side core.

Abstract: A bistable electromagnetic actuator including: a tube; a stator arranged outside of the tube; and a rotor mounted in the tube so as to be displaceable along the longitudinal axis, the rotor at least partially comprises one or more of a paramagnetic and a ferromagnetic material and can be reversibly displaced between a first position and a second position by applying an electromagnetic field; wherein the stator comprises two ring permanent magnets, a coil for producing the electromagnetic field, and a back-iron element having two stator pole shoes; and the two ring permanent magnets comprise hard magnetic particles that are embedded in a plastic matrix.

Abstract: Provided is a linear actuator which is simple in structure, inexpensive to manufacture, in addition, has small magnetic leakage, and can provide a large inertial force without increasing the number of parts and weight.

Abstract: An actuator configured to provide haptic feedback to a user. The actuator is located on a plate and is configured to apply various excitations to the plate to generate a mechanical wave propagating in the controlled direction. The excitations can be a translational motion of the actuator (or a portion of the actuator) in two or three perpendicular axes. Alternatively, the excitations can be a non-translational motion (e.g., rotation about an axis) of the actuator (or a portion of the actuator). By generating the mechanical wave traveling in the controlled direction, loss of energy due to scattering of the mechanical wave can be obviated.

Abstract: Provided is a broadband and large displacement angular vibrator, comprising an outer housing, a vibration table, a main spindle, a moving coil assembly, a magnetic circuit assembly, a holding brake assembly, a motor and closed loop control assembly thereof, an electric viscoelastic feedback control assembly, an air bearing, and an angular displacement sensor; the moving coil comprises a moving coil substrate and a coil; the moving coil substrate is fixed to the main spindle; the magnetic circuit assembly comprises a magnetic ring, a central magnetic pole, and magnets; the magnetic ring, central magnetic pole, magnets, and air gap form a closed magnetic circuit; the central magnetic pole is located inside the magnetic ring, the magnets are located between the magnetic ring and the central magnetic pole, and the magnets are attached to the central magnetic pole; the outer housing has the holding brake assembly; the holding brake assembly comprises a brake lining, an oil distribution sleeve, and an oil reservoir

Abstract: This invention relates to energy harvesting of electrical energy by the change in a magnetic circuitous permeability path for magnetic lines of force that move through a coil of wire to induce, by Faraday's Law of Electromotive Induction, an electromotive force at the coil winding terminals of an associated coil. An abrupt, substantially instant change generated by a magnet's axial or angular mechanical and magnetic contact or dislocation through instant movement of the magnet by magnetic unlike pole spring back attractive force action with a high permeability stationary hollow or solid magnetic metal core centered in a coil bobbin with a wire wound wire coil providing efficient electrical generation therefrom.

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 motor further includes a number of dampers located between the vibration unit and the elastic members for being constantly pressed and released.

Abstract: An electric linear actuator includes a fixed block, an output movable block, a counter movable block, a projecting side coupling member, a retracting side coupling member, a block coupling member, and an output functional member. The output movable block and the counter movable block are configured to be reciprocated in the movable direction in opposite phases by electromagnetic force acting between the fixed block and the output and counter movable blocks. The projecting side coupling member is coupled to the output movable block and the counter movable block. The retracting side coupling member is coupled to the output movable block and the counter movable block. The projecting side coupling member and the retracting side coupling member have different shapes.

Abstract: A wireless power receiver includes a coil to receive the power; and a magnet to generate an intensity of a magnetic flux density sensed by a sensor of the wireless power transmitter. The coil has an empty central region. The magnet is disposed in the empty central region of the coil. The magnet includes an electric steel sheet.

Abstract: Variations of the devices and methods disclosed herein pertain to an extended travel spiral flexure bearing having spiral arms, each of the spiral arms including an attachment point at the inner end thereof and at the outer end thereof. Variations of the bearing may also include a bearing clamp to be attached to the spiral flexure bearing at the attachment points, the bearing including an outer bearing portion to be disposed on the outer periphery of the flexure bearing and an inner bearing portion to be disposed at the center of the flexure bearing. Variations also pertain to a micro check valve assembly that includes a valve base, a valve cover, and a flexure that are all bonded together. The valve being closed when the valve door rests on the valve seat and open when the valve door is lifted from the valve seat.

Abstract: A vibration motor includes a fixed member, a vibration unit, and an elastic member. The fixed member includes a housing having a receiving space and a coil received in the receiving space and assembled with the housing. 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 positioning guiding member including a first weight guiding rail formed on the first weight, a base guiding rail formed on the bottom wall of the base, a movement rail formed cooperatively formed by the first weight guiding rail and the base guiding rail, and a plurality of rolling members received in the movement rail for restricting the vibration unit to move along the movement rail.

Abstract: A reciprocating compressor is provided that may include a shell including a vibration absorbing member formed to be wound around an outer circumferential surface or an inner circumferential surface or stacked thereon, so that compressor vibration may be attenuated by frictional contact between the shell and the vibration absorbing member or between layers of the vibration absorbing member. Also a noise insulating layer may be formed between the shell and the vibration absorbing member or between the layers of the vibration absorbing member, so that a magnitude of noise may be reduced as vibration noise passes through the noise insulating layer, whereby vibration noise of the compressor, such as noise of a high frequency band, may be further attenuated by fine vibration.

Abstract: An electromagnetic transducer is disclosed in the present invention. The electromagnetic transducer includes a frame comprising a receiving space, an upper surface and a lower surface opposite to the upper surface; a suspension including a suspending ring facing the receiving space and at least one pair of elastic arms with projections thereof disposed in an outline of the frame, wherein each of the elastic arms includes a fixing portion mounted on the lower surface and an vibration portion connected with the fixing portion, spaced from the lower surface and providing an vibration approaching and away from the lower surface; a magnetic circuit unit surrounded by the suspending ring for being elastically supported by the suspending ring in the receiving space; and an vibration unit assembled with the frame and facing the magnetic circuit unit.

Abstract: 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.

Abstract: The embodiments of the disclosure provide a mobile terminal, which includes a power generation unit, a power storage unit and a control system. The power generation unit includes a toroidal inductance coil which can move back and forth inside and outside a region of magnetic field generated by a permanent magnet and incise magnetic force lines of the permanent magnet, such that a current is generated in the toroidal inductance coil. The power storage unit is connected with the toroidal inductance coil of the power generation unit and a power supply circuit of the mobile terminal, respectively, and the power storage unit is used for storing power generated by the power generation unit. The control system is connected with the power storage unit. When electricity of a battery of the mobile terminal is less than a predetermined amount and the battery is not in a charged state, the control system causes the power storage unit to supply power to the mobile terminal.

Abstract: An actuator includes a fixed section that includes a spindle and a coil fixed to the spindle, a first movable section that includes a first magnet magnetized in an inside-outside direction and disposed to cover the outer peripheral surface of one end in an axial direction of the fixed section, that is mounted on the spindle in an elastically-maintained state, and that is movable in the axial direction, and a second movable section that includes a second magnet magnetized in the inside-outside direction and disposed to cover the outer peripheral surface of the other end in the axial direction of the fixed section, that is mounted on the spindle in an elastically-maintained state, and that is movable in the axial direction. When current flows in the coil, the first movable section and the second movable section move in the opposite directions.

Abstract: A power generation switch comprising: a case; a core, a coil being wound around the core; a magnet magnetically connected with the core; a yoke in which the magnet is disposed; an elastic element that supports the yoke and elastically deforms so as to deviate a position of the magnet from the core; a switch element that is operated to be moved; and a yoke driving mechanism that moves the yoke so that upon an engagement of the switch element and the yoke being released, the yoke moves between a first position and a second position due to elastic force of the elastic element, wherein first magnetic flux is generated by the core and the magnet when the yoke is at the first position and second magnetic flux different from the first magnetic flux is generated by the core and the magnet when the yoke is at the second position.

Abstract: A linear oscillation system comprising a housing, a stationary assembly, a moveable assembly and a suspension system is disclosed. The suspension system is mechanically coupled between the moveable assembly and the housing. The suspension system comprises a plurality of planar elastic members and plurality of longitudinal elastic members disposed between the plurality of planar elastic members. A first end of each of the plurality of planar elastic members is mechanically coupled to at least one of the plurality of planar elastic members. A second end of each of the plurality of longitudinal elastic members is mechanically coupled to the housing.

Abstract: Pulse controlled linear actuator comprising a working cylinder (9) for receiving a medium introduced through a valve system by a compressor/pump, a piston, the shank (13) of which represents the output of the actuator. It also comprises a central solenoid (1) and alternately moved iron cores (3). The central solenoid (1) and the iron cores (3) are arranged between upper and lower solenoids (2). The iron cores (3) have two separate medium spaces (14, 15). The first medium space (14) leads into the portion of the working cylinder (9) above the piston (10) and under the piston (10). The second medium space (15) is separated from the space between the iron cores (3) by the iron cores (3) and leads into the portion of the working cylinder (9) above the piston (10) and under the piston (10). The valves (4, 8) are counter-phase or phase pulse controlled.

Abstract: A linear compressor is provided. The linear compressor may include a shell having a refrigerant inlet, a cylinder provided within the shell, a piston that reciprocates within the cylinder to compress a refrigerant, a motor assembly that provides a drive force to the piston, a support provided for the magnet assembly, to support an end of a permanent magnet, and a frame engaged with the cylinder to support the motor assembly, and that includes a contact to absorb impact when the piston collides against the support.