Raising device for raising a sheet-like object having raising threads, the raising device comprising: - a support fitting providing support to a tubular motor and to an axial spindle; - a winding tube connectable to said raising threads for winding the raising threads, and being arranged concentrically with said tubular motor at a first end of the winding tube; - the tubular motor serving as an electromechanical drive means for the raising operation and being coupled to said concentric winding tube, - - the axial spindle at a second end of the winding tube; - whereby the motor carries a first coupling means that takes care of the transmission of the rotation generated by the drive means to the winding tube; - whereby the winding tube is rotatably coupled around its longitudinal axis to the axial spindle that is fastened to the support fitting and that has an external screw thread; - and wherein the raising device further comprises a rotatable second coupling means fastened to a central axial opening that is provided with an internal screw thread that is complementary to said external screw thread of the axial spindle, and wherein the pitch of the screw threads (10, 12) is at least equal to the thickness of each raising thread of the sheet-like object; - and wherein the raising device further comprises a hollow, substantially cylindrical coupling element, rotably coupled to a first end of the winding tube; and wherein the winding tube is also axially movable with regard to this cylindrical coupling element, characterised in that - a major portion of the motor is located inside said winding tube; - the winding tube is rotatably coupled close to its second end to the axial spindle; and - the second coupling means are fastened in said second end to said central axial opening. - a support fitting providing support to a tubular motor and to an axial spindle; - a winding tube connectable to said raising threads for winding the raising threads, and being arranged concentrically with said tubular motor at a first end of the winding tube; - the tubular motor serving as an electromechanical drive means for the raising operation and being coupled to said concentric winding tube, - - the axial spindle at a second end of the winding tube; - whereby the motor carries a first coupling means that takes care of the transmission of the rotation generated by the drive means to the winding tube; - whereby the winding tube is rotatably coupled around its longitudinal axis to the axial spindle that is fastened to the support fitting and that has an external screw thread; - and wherein the raising device further comprises a rotatable second coupling means fastened to a central axial opening that is provided with an internal screw thread that is complementary to said external screw thread of the axial spindle, and wherein the pitch of the screw threads (10, 12) is at least equal to the thickness of each raising thread of the sheet-like object; - and wherein the raising device further comprises a hollow, substantially cylindrical coupling element, rotably coupled to a first end of the winding tube; and wherein the winding tube is also axially movable with regard to this cylindrical coupling element, characterised in that - a major portion of the motor is located inside said winding tube; - the winding tube is rotatably coupled close to its second end to the axial spindle; and - the second coupling means are fastened in said second end to said central axial opening. - a major portion of the motor is located inside said winding tube; - the winding tube is rotatably coupled close to its second end to the axial spindle; and - the second coupling means are fastened in said second end to said central axial opening.