| 摘要 |
<p>A tube motor comprising an electric motor (7) which is placed in a tube (11) and the electric motor (7) is coupled to screw transmission comprising two screws with different pitches and a guide rod (2), whose driven screw (1) and the guide rod (2) are arranged in-line on the common axis and manufactured as single piece, placed in rotatable, axially immovable driven nut (6) and in an immovable guide profile (5) while an electric motor (7), a driving screw (3), a driving nut (4), the guide rod (2) and a guide profile (5) are placed in a tube (11) and the electric motor (7) and the guide profile (5) are fixed to the tube (11) and to the end of the tube (11) is rotatably coupled axially immovable driven nut (6) and to the driven nut (6) is coaxially fixed an output tube (13) and in the ouptut tube (13) is placed the driven screw (1). The pitch of the driven screw (1) is high enough that the screw transmission is self-locking with respect to an external torque. The driven screw (1) and guide rod (2) can be manufactured in single piece so that the twisted part of the guide rod (2) having at least triangular cross section or at least two grooves forms at the same time the driven screw (1).</p> |
