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    • 50. 发明专利
    • Motor driving device of camera
    • 摄像机电机驱动装置
    • JPS5723922A
    • 1982-02-08
    • JP9758580
    • 1980-07-18
    • Nippon Kogaku Kk
    • YONEDA OSAMU
    • G03B1/54G03B17/00G03B17/42
    • G03B17/425
    • PURPOSE:To reduce the rotations of a motor by limiting a voltage applied to the motor when a temperature is below a prescribed value, by using the detection signal of a temperature detecting means provided in a camera. CONSTITUTION:A camera 10 is connected to a motor driving device 11, which includes a torque detection part 6, a motor drive controlling circuit 12, a motor braking circuit 14, a voltage limiter circuit 13 having a temperature detection part, etc. The torque detection part 6 detects the winding torque of a film increasing and then closes an SW4. Further, the rotations of the shaft of a motor M1 are transmitted to the winding mechanism of the camera 10 by a coupler 3 through a gear train, etc. At low temperature, the limiter circuit 13 is put in operation to prevent a voltage higher than a certain voltage from being applied to the motor 1 which is rotating.
    • 目的:通过使用设在摄像机中的温度检测装置的检测信号,通过限制在温度低于规定值的电机施加的电压来减小电动机的旋转。 构成:摄像机10连接到电动机驱动装置11,电动机驱动装置11包括转矩检测部6,电动机驱动控制电路12,电动机制动电路14,具有温度检测部的电压限制电路13等。转矩 检测部件6检测膜的卷绕扭矩增加,然后关闭SW4。 此外,马达M1的轴的旋转通过齿轮系等通过联轴器3传递到相机10的卷绕机构。在低温下,限制器电路13被运行以防止高于 施加到正在旋转的电动机1的一定电压。