Title:
ELECTROMOTIVE FURNITURE DRIVE FOR A PIECE OF FURNITURE, METHOD FOR MONITORING A PULSE-WIDTH RATIO OF AN ELECTROMOTIVE FURNITURE DRIVE, AND A CORRESPONDING PIECE OF FURNITURE
Document Type and Number:
WIPO Patent Application WO/2013/127940
Kind Code:
A3
Abstract:
The invention relates to an electromotive furniture drive (100) for adjusting a moveable part (4, 5) of a piece of furniture (1) by means of an output element, comprising a) at least one adjusting drive (7, 8) with respectively at least one electric motor, a speed reducing mechanism which is coupled thereto and which ensures that the output element is drivenly coupled and can be linearly displaced and/or rotatably moved, and when said output element reaches a predetermined position, said output element actuates an end switch and/or reference switch and/or switching means, b) at least one control device (9) and c) at least one control unit (10), said control device (9) comprising a positioning device for the output element provided with a control block with a counter and a recording device for evaluating impulses of a counter EMK of the at least one electric motor. Said control device (9) comprises a digital potentiometer which emits as an output value, an electric value which is proportionate to the position of said output element. The control device comprises, in a further embodiment, a monitoring device. The invention also relates to a method for monitoring a pulse width ratio of an electromotive furniture drive and a piece of furniture (1).
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Inventors:
HILLE ARMIN (DE)
Application Number:
PCT/EP2013/054072
Publication Date:
April 10, 2014
Filing Date:
February 28, 2013
Export Citation:
Assignee:
DEWERTOKIN GMBH (DE)
International Classes:
A47C31/00
Foreign References:
| EP1524759A2 | 2005-04-20 | |||
| DE2736276B1 | 1978-11-09 | |||
| US20090139029A1 | 2009-06-04 | |||
| JP2003325590A | 2003-11-18 |
Attorney, Agent or Firm:
KLEINE, Hubertus et al. (Bielefeld, DE)
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