Clutch device for magnetic recording/reproducing apparatus

A clutch device for a recording/reproducing apparatus, comprising:

• a central shaft installed on a main chassis;
• a drive pulley having a cylindrical pulley holder portion, extending therefrom, said drive pulley connected to said central shaft for rotation therewith;
• driving means operatively connected to the drive pulley for rotating the drive pulley;
• an gear in order to transmit the power received from the drive pulley 64 to an idler gear;
• a cylindrical holder unit ascendable/descendible along the central shaft;
• a clutch spring placed between the cylindrical pulley holder portion and the cylindrical holder unit for selectively transmitting a power with a certain torque form the drive pulley to the gear in accordance with the rotational direction of the drive pulley;
• wherein the clutch spring includes an at least one contacting portion producing friction by contacting to an surface of the cylindrical pulley holder portion or the cylindrical holder unit and a connecting portion generating an elastic force;
• a first transmitting path for directly transmitting the rotation of the drive pulley to the idler gear;
• and
• a second transmitting path for transmitting the rotation of the drive pulley to the idler gear through the clutch spring with an certain slip output torque.

A clutch device fir a recording/reproducing apparatus, comprising:

• a central shaft installed on a main chassis;
• a drive pulley having a cylindrical pulley holder portion, extending therefrom, said drive pulley connected to said central shaft for rotation therewith;
• driving means operatively connected to the drive pulley for rotating the drive pulley;
• an gear in order to transmit the power received from the drive pulley 64 to an idler gear;
• a cylindrical holder unit ascendable/descendible along the central shaft;
• a clutch spring placed between the cylindrical pulley holder portion and the cylindrical holder unit for selectively transmitting a power with a certain torque form the drive pulley to the gear in accordance with the rotational direction of the drive pulley;
• wherein the clutch spring includes an at least one contacting portion producing friction by contacting to an surface of the cylindrical pulley holder portion or the cylindrical holder unit and a connecting portion generating an elastic force;
• a first transmitting path for directly transmitting the rotation of the drive pulley to the idler gear;
• a second transmitting path for transmitting the rotation of the drive pulley to the idler gear through the clutch spring with an regular slip output torque;
• and
• a third transmitting path for transmitting the rotation of the drive pulley to the idler gear through the clutch spring with an specific slip output torque.