| 摘要 |
An electrically driven roll-up device is disclosed. The electrically driven roll-up device comprises: a channel frame comprising a pair of side plates and a bottom plate connecting a gap between the side plates from a bottom side; a first side cap to cover one end of the channel frame; a second side cap to cover the other end of the channel frame, wherein a screw is connected to an inner surface thereof; a motor arranged lengthwise in an axial direction in the channel frame while being connected to the first side cap; a rotational force transfer tube which accommodates the motor therein in the axial direction, and is driven by the motor to be rotated; a winding roll restrained in the rotational force transfer tube in a rotational direction, arranged to be slid in the axial direction, and provided with a female screw unit screw-mounted on the screw; and a plurality lifting strings fixed and wound on the winding roll on a plurality of positions, and connected to a member to be rolled up through a plurality of openings formed on the bottom plate of the channel frame. The winding roll rotates and moves in the axial direction at the same time by rotation of the rotational force transfer tube according to drive of the motor to unwind and lower the lifting strings or wind and raise the lifting strings. |
