| 摘要 |
The adjustable support (2) of a seat or a bed mattress, and the like, is operated by a motor. The assembly has at least two sections (4,6) to support a flat mattress, with a swing joint between them. The drive is an electromotor at the first section (4), with the drive output within it between the outer levels of the section. At least one longitudinal member (42,44) is hollow at the first section (4), to contain the electromotor. |
