Drive for closure elements
AssigneeMarantec Antriebs-und Steuerungstechnik GmbH & Co. KG
InventorMichael Hörmann
Life of this patent
Estimating the term…
Abstract
A drive for closure elements is provided, in particular in the area of garage and industrial doors, but also for example in the form of roller shutters, with a reference value generator arranged in the motor or in the gearing of the drive for determining the actual position of the closure element. When a reference point position is reached, the reference value generator emits a signal or causes a signal modification, on the basis of which the actual-value generator can be calibrated. The reference value generator has two reference discs rotating in different speeds, which, in predetermined angular positions to one another, define the reference point positions which can be scanned by at least one scanning device.
Claims24
A drive for closure elements, comprising
- a reference value generator arranged in or on gearing (14, 12, 10) of the drive for determining the actual position of the closure element,
- the reference value generator having two reference discs (18, 20) offset with respect to one another and thereby rotating at different angular speeds, which, in predetermined angular positions to one another, define the reference point positions which can be scanned by at least one scanning device (22),
- said reference discs (18, 20) overlapping at least once during respective rotation,
- each said reference disc (18, 20) comprising at least one signal mark (26, 28), and
- said signal marks (26, 28) overlapping at least once during rotation of said respective reference discs (18, 20), such that said overlapping is detected by said scanning device (22).
Dependencies are inferred from the claim text.