Door drive
AssigneeInventio AG
InventorAndreas Sukale
Life of this patent
Estimating the term…
Abstract
A friction wheel door drive for a sliding door for lifts consisting of at least one rectilinearly or curvilinearly moved door leaf (1), which is suspended of guide rollers (3) and is guided at a guide (2) is presented. At least one of the guide rollers (3) is formed as a motor roller (3') moving the door leaf and in the form of an outside rotor motor. The motor may be either a direct current motor with permanent magnets in the outside rotor and electronic commutation or a polyphase induction motor with a laminated outside rotor having a short-circuited winding and a laminated inner stator with a polyphase alternating current winding. Force transmission between the motor roller (3') and a running roller (3") may be provided by a transmission (18), between motor roller (3') and running roller (3") is possible.
Claims9
A friction wheel door drive in combination with a sliding door having at least one door leaf which is moved along a path and which is suspended by means of guide rollers and guided at a guide, characterized in that at least one of the guide rollers is constructed as a motor roller which entrains the door leaf, the motor roller having an internal motor with an outside rotor comprising a roller body and an inner stator having an axle connected to one of said at least one door leaves.
Dependencies are inferred from the claim text.