Cable drive garage door opener
AssigneeMarantec Antriebs-und Steuerungstechnik GmbH & Co. KG
InventorMichael Hörmann
Life of this patent
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Abstract
A drive for doors, in particular garage doors, having door runners which are in each case arranged laterally and which are guided in fixed position rails, and having a drive unit having at least a motor and a driving gear. The drive unit has two rope pulleys arranged to oppositely rotate, with the two free ends of a respective rope being wound on each rope pulley. The rope ends cooperate with the door runners such that the door can be opened or closed via the rotational movement of the rope pulleys.
Claims19
A drive comprising door runners (18) laterally arranged at edges of a door (10) and guided in respective stationary running rails (16), and a drive unit (24) comprising at least a motor (26) and a driving gear (32), wherein
- two counter-rotating drive shafts extend out of the drive unit (24), with a rope pulley (28, 30) respectively arranged upon each said drive shaft,
- a rope (38) having two free ends (40, 42) is respectively wound upon each said pulley (28, 30),
- the ropes (38) cooperate with the door runners (18) for opening and closing of the door (10) such that rotational movement of the pulleys (28, 30) is transmitted to the door runners (18),
- the free ends (40, 42) of each said rope (38) are each fixed to a respective stationary point (44, 46), said stationary points (44, 46) of each said rope being positioned at opposite longitudinal ends of a respective one of said running rails (16), and
- rope deflectors (48) are positioned and cooperate with the door runners (18) to guide the ropes between a respective one of the rope pulleys (28, 30) and a respective pair of said fixed points (44, 46).
Dependencies are inferred from the claim text.