Vibration motor for obtaining a starting torque with a small cur

Details Vibration motor for obtaining a starting torque with a small cur Vibration motor for obtaining a starting torque with a small cur

1997-12-16

1999-06-01

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

74 87, H02K 706, F16H 3310

Patent

active

059090740

ABSTRACT:
The present invention is provided with a motor having a rotary shaft. A weight is fixed to a motor through guide pins formed to the rotary shaft. Each of springs has one end connected to the rotary shaft and the other end connected to the weight. The guide pins guide the vertical movement of the weight with respect to the rotary shaft. Holes are formed in the weight and the guide pins are pierced therethrough. A hook is formed to a tip of each guide pin to prevent the weight from coming off the guide pins when the weight is rotated. With the above-described arrangement, in the vibration motor according to the present invention, the eccentric quantity of the weight with respect to the rotary shaft becomes small by the springs when the rotation of the weight is started. The starting torque of the motor can be, therefore, small. With the start of the rotation of the weight, the eccentric quantity of the weight with respect to the rotary shaft becomes large against the tension of the springs by the centrifugal force of the rotation, and the vibration motor can obtain a sufficient quantity of vibration.

REFERENCES:
patent: 3911416 (1975-10-01), Feder

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