MOTOR-DRIVEN SUPPORT DEVICE FOR THE UPHOLSTERY OF A PIECE OF FURNITURE USED TO SIT OR LIE DOWN, ESPECIALLY A MATTRESS FOR A BED

摘要

The motorised support device has a drive motor (24) mounted outside of the first longitudinal beam (20). A recess is formed in a side wall of the first beam opposite the other longitudinal beam (22) so that the drive motor is in driving connection through the recess with parts of the drive means mounted inside the first beam. The first gear element is a worm of a worm gearing whose worm wheel is mounted inside the first beam and forms the second gearing element.