Miniature vibration motor structure
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorsAlex Horng, Ching-Shen Hong, Tso-Kuo Yin
Life of this patent
Estimating the term…
Abstract
A miniature vibration motor structure includes an upper plate and a lower plate each having a seat hole for receiving each of two ends of a shaft column in a non-tight fit manner. The shaft column passes through the shaft hole of the bearing of the rotor in a loose fit manner. The annular permanent magnet is integrally formed on an outer periphery of the bearing. Thus, when the rotor is rotated, the center of gravity and the center of rotation of the rotor are not at the same central line. The stator seat wound with a coil has poles which may be induced with the permanent magnet of the rotor, so as to drive the rotor to rotate.
Claims7
A miniature vibration motor structure, comprising:
- a housing, including an upper plate and a lower plate each having a seat hole for receiving each of two ends of a shaft column in a non-tight fit manner;
- a rotor, including a bearing, and an annular permanent magnet integrally formed on an outer periphery of the bearing, the bearing having a center defining a shaft hole for passage of the shaft column, a center of gravity and a center of rotation of the rotor are not in concert with each other;
- a stator seat, wound with a coil, and having a power inlet for supplying an electric power into the stator seat, the stator seat having poles which may be induced with the permanent magnet of the rotor.
A miniature vibration motor structure, comprising:
- a fixing plate, having a shaft connecting hole, and a plurality of positioning holes, the shaft connecting hole of the fixing plate allowing non-tight combination of one end of the shaft column, a housing provided with a plurality of locking blocks locked in the positioning holes of the fixing plate, the housing having a shaft connecting hole allowing non-tight combination of the other end of the shaft column;
- a rotor, including a bearing, and an annular permanent magnet integrally formed on an outer periphery of the bearing, the bearing having a center defining a shaft hole for passage of the shaft column, a center of gravity and a center of rotation of the rotor are not in concert with each other;
- a stator seat, wound with a coil, and having a power inlet for supplying an electric power into the stator seat, the stator seat having poles which may be induced with the permanent magnet of the rotor.
Dependencies are inferred from the claim text.