| 摘要 |
PROBLEM TO BE SOLVED: To prevent decrease of driving torque due to biased abrasion that occurs to the friction surface of a vibrating motor. SOLUTION: This device is provided with a heater 409 that heats a vibrating motor 401 and a fan 400 that cools the motor 401. A controller (419 in Fig. 9) changes the temperature of the motor 401 cyclically using the heater 409 and fan 400. This structure can prevent the occurrence of one-sided abrasion. |
