| 摘要 |
The present invention relates to an electromagnetic coupling device. The electromagnetic coupling device includes: a rotation shaft; a rotation yoke which is attached to the rotation shaft and has an electromagnet coil which generates a magnetic force when power is supplied; a moving couple ring which is a rotating unit installed to the rotation shaft, has a first engaging member on a side, is combined with the rotation yoke if it moves to the rotation yoke due to the magnetic force of the electromagnet coil, and is separated from the rotation yoke if it moves to the opposite direction of the rotation yoke when the magnetic force of the electromagnet coil is removed; a fixing couple ring which has a second engaging member which engages with the first engaging member of the moving coupling ring; and a pulley which is attached to the fixing couple ring. The torque of the rotation shaft is transmitted to the pulley which is a rotating unit, by quickly combining the moving couple ring with the rotation yoke by the magnetic force. |
