| 摘要 |
PURPOSE: A vibration motor is provided to make an accessory body comprising of a weight counter with a half-cylinder body, have a very small size, so as to increase an eccentric capacity to obtain an effect of a big vibration. CONSTITUTION: A brush base(200) is inserted in one end of a case(100). A housing(300) is inserted in another end of the case(100), and has a penetrated hole in a center. A commutator(400) is located in the case(100) adjacent to the brush base(200), and selectively connected with a brush(220) of the brush base(200) to be applied with a current from an exterior. One end of a shaft(500) is located in an inner circle of the brush base(200) by being inserted in a guide hole of the housing(300). Another end of the shaft(500) is exposed to a case exterior. A magnet(M) is located in an outer circle of the housing(300). A coil(C) is installed for being separated from the magnet(M) by a determined distance, and is applied with a current through the communicator(400). Inner/outer oilless bearings(600) are installed in an inner and outer of the case(100), and support a slide of the shaft(500). A half cylinder body(710) is located in the outer of the case(100), and has a determined size. An accessory body(720) is located in a flat side of the half cylinder body(710) as a small size, and forms a guide hole which an end of the shaft is inserted in a boarding part with the half cylinder body(710).
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