| 摘要 |
A slim type blushless vibration motor is provided to simplify the arranging structure of a control circuit and a substrate by using one hall IC, and to prevent the lack of torque generated in a single phase method by using three coils. A slim type blushless vibration motor includes a motor housing, a rotation axis(40), a rotor yoke(30), and a hall IC. The motor housing is composed of a lower case(10), and an upper case(20) which is coupled with the lower case(10) and forms a receiving space inside. The rotation axis(40) is installed at a center of the motor housing. The rotor yoke(30) is coupled with the rotation axis(40) through a bearing to rotate, and has a ring-shaped magnet magnetized with four poles at a bottom, and a weight which gives eccentricity by being installed at an outer circumference of the magnet. The hall IC is installed at an upper surface of the lower case(10), and detects the location of three serially connected coils(C1,C2,C3) and the magnetic poles of the magnet to generate a magnetic field at the magnet of the rotor yoke(30).
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