A haptic device with coupled resonance at tunable frequencies includes an actuator, a first structure coupled to the actuator, a second structure coupled to the first structure and separate from the actuator, and at least one local mass coupled to the first or second structure; the first and second structure having resonance such that application by the actuator of a resonance frequency to the first structure causes the first and second structures to resonate in phase and displace the local mass. A method of forming a haptic device includes coupling an actuator to a first structure, coupling the first structure to a second structure, locating a mass on at least one of the first or second structures, and configuring the actuator to, upon activation, excite the first structure at a resonance frequency of the haptic device such that the first and second structures resonate in phase and displace the mass.

A haptic device with coupled resonance at tunable frequencies includes an actuator, a first structure coupled to the actuator, a second structure coupled to the first structure and separate from the actuator, and at least one local mass coupled to the first or second structure; the first and second structure having resonance such that application by the actuator of a resonance frequency to the first structure causes the first and second structures to resonate in phase and displace the local mass. A method of forming a haptic device includes coupling an actuator to a first structure, coupling the first structure to a second structure, locating a mass on at least one of the first or second structures, and configuring the actuator to, upon activation, excite the first structure at a resonance frequency of the haptic device such that the first and second structures resonate in phase and displace the mass.

A vibration generator including a coil, a plunger including a first shaft and a second shaft, and a frame. The first shaft is received in the coil such as to be movable in a first direction. The second shaft extends in a second direction orthogonal to the first direction, is disposed on the other side in the first direction relative to the coil with a gap therebetween. The first and second shafts are partly made of a magnetic material so as to be magnetically attractable to the coil and thereby movable to one side in the first direction. The frame is fixed to the first and second shafts at positions on the one and other sides, respectively, in the first direction relative to the coil, and elastically deformable at least partly as a result of movement of the first and second shafts.

A vibration generator including a coil, a plunger including a first shaft and a second shaft, and a frame. The first shaft is received in the coil such as to be movable in a first direction. The second shaft extends in a second direction orthogonal to the first direction, is disposed on the other side in the first direction relative to the coil with a gap therebetween. The first and second shafts are partly made of a magnetic material so as to be magnetically attractable to the coil and thereby movable to one side in the first direction. The frame is fixed to the first and second shafts at positions on the one and other sides, respectively, in the first direction relative to the coil, and elastically deformable at least partly as a result of movement of the first and second shafts.

A linear vibration generating device. The linear vibration generating device includes a vibrator including an annular magnet and a weight surrounding the magnet; a stator including a coil disposed at a center of the magnet and a yoke surrounding the coil;

an elastic member disposed between the vibrator and the stator to elastically support the vibrator; and an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height. The anti-tilting unit is a non-magnetic body with a cylindrical shape having an outer diameter equal to or greater than a diameter of an outermost portion of the yoke and smaller than an inner diameter of the magnet.

A linear vibration generating device. The linear vibration generating device includes a vibrator including an annular magnet and a weight surrounding the magnet; a stator including a coil disposed at a center of the magnet and a yoke surrounding the coil;

an elastic member disposed between the vibrator and the stator to elastically support the vibrator; and an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height. The anti-tilting unit is a non-magnetic body with a cylindrical shape having an outer diameter equal to or greater than a diameter of an outermost portion of the yoke and smaller than an inner diameter of the magnet.

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 inhibit a short-circuit between the terminal portion and the cover can.

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 inhibit a short-circuit between the terminal portion and the cover can.

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 inhibit a short-circuit between the terminal portion and the cover can.

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 inhibit a short-circuit between the terminal portion and the cover can.