摘要:
A motor includes a rotating member including a first magnet, and a fixed member supporting the rotating member and including a second magnet configuring a magnetic bearing part together with the first magnet. A gap between the first and second magnets is larger than at least one of a contact prevention gap between the rotating member and the fixed member and a clearance between a shaft and a sleeve supporting the shaft.
摘要:
A vibration actuator module is disclosed. In accordance with an embodiment of the present invention, the vibration actuator module includes a vibrated body, a vibrating plate, which is coupled to the vibrated body and has a smaller elastic modulus than the vibrated body, and a driver, which is coupled to the vibrating plate.
摘要:
There is provided a motor including: a rotating member including a first magnet; and a fixed member supporting the rotating member and including a second magnet configuring a magnetic bearing part together with the first magnet, wherein a gap between the first and second magnets is larger than at least one of a contact prevention gap between the rotating member and the fixed member and a clearance between a shaft and a sleeve supporting the shaft.
摘要:
Disclosed herein are a bearing assembly and a spindle motor including the same. The bearing assembly includes: a shaft having a first magnet formed on an outer circumferential surface thereof; and a sleeve having a second magnet formed on an inner circumferential surface thereof, and spaced apart from the first magnet to face the first magnet, the sleeve supporting the shaft, wherein a spaced gap between the first magnet and the second magnet is filled with oil. According to the present invention, power consumption due to driving of the spindle motor can be reduced by using the bearing assembly included in the magnetic bearing.
摘要:
A vibration motor is disclosed. In accordance with an embodiment of the present invention, the vibration motor includes a base, a vibrator, which reciprocates in the base, a protruding part, which is formed on at least one of the base and the vibrator, and an elastic body, which is interposed between the base and the vibrator and has a through-part formed therein and in which the protruding part is inserted into the through-part and the elastic body is coupled to the base or the vibrator by caulking or bending the protruding part which is protruded through the through-part. Thus, the vibration motor can have a uniform resonant frequency characteristic since a spring is coupled by way of caulking or bending.
摘要:
There is provided an actuator module, a haptic feedback device, and an electronic device having the same. The haptic feedback device includes a haptic device receiving a user contact applied thereto, and an actuator module generating vibrations according to the user contact applied to the haptic device.
摘要:
There is provided a lightweight, slim and compact haptic feedback device due to an actuator module constituted of a piezoelectric element and a vibration plate, and an electronic device having the same. The haptic feedback device includes a haptic device receiving contact pressure applied thereto, and an actuator module being in contact with a lower surface of the haptic device and excited according to variations in contact pressure with the haptic device to thereby generate vibrations.
摘要:
Disclosed herein is a piezoelectric actuator module. The piezoelectric actuator module includes a flat plate, two or more elastic members, and a piezoelectric element. The elastic members are provided on each of opposite ends of the plate in a longitudinal direction thereof and protrude perpendicularly from the plate in such a way that a first end of each of the elastic members is coupled to an electronic device. The piezoelectric element is provided on a first surface of the plate and transmits vibrating force to the electronic device. The piezoelectric actuator module includes a plate having on opposite ends thereof two or more elastic members, thus being capable of controlling vibrating force by changing the length of the plate and the number of the elastic members, in addition to reliably supporting piezoelectric elements provided on the plate.
摘要:
A linear vibrator is disclosed. The linear vibrator in accordance with an embodiment of the present invention includes a base, a coil unit, which is coupled to the base, a magnet assembly, which forms a closed circuit of a magnetic force perpendicular to an electric current flowing through the coil unit and in which the magnet assembly relatively moves with respect to the coil unit, and an elastic member, which elastically supports the magnet assembly. Thus, a linear vibrator with an increased driving force can be provided by preventing the leakage of magnetic flux.
摘要:
The present invention provides a horizontal linear vibrator which can increase vibration strength while at the same time guaranteeing a sufficiently long lifetime and satisfactory responsivity. The horizontal linear vibrator includes a casing, a bracket, a vibration unit and springs. The bracket and the casing form the internal space therein. A coil is provided above the bracket such that the center axis thereof is oriented in a horizontal direction. The vibration unit is disposed through the coil and comprises a magnetic field generating unit and a weight. The magnetic field generating unit includes a magnet assembly and a yoke. The magnet assembly has magnets which are provided on opposite sides of a magnetic body core such that the similar magnetic poles of the magnets face each other. The weight is mounted to the magnetic field generating unit. The springs are coupled to the casing or the bracket and elastically support the vibration unit.