Arrangement for vertically raising and lowering a

专利名称：Arrangement for vertically raising and

lowering a unit suspended from a support

发明人：Rönn, Per Gunnar,Svedberg, Leif申请号：EP93850003.0申请日：19930108公开号：EP0551248B1公开日：19961009

摘要：The invention relates to an arrangement for vertically raising and lowering aunit, e.g. a plate, a monitor or the like, suspended at the top, comprising an upper

attachment (2) and a lower attachment (3), said lower attachment beig able to be fixed ona desired ce from the attachment fixed at the top. The arrangement comprisingfurthermore several groups of interconnected rodlike elements (50) provided withapertures for pivot means, whereof two outer apertures (at 6) are spaced a

predetermined distance from each other and at least one intermediate aperture (at 51) issymmetrically disposed between said outer apertures, said groups of rodlike elementsforming one of at least three interconnected lazy tongs linkages, whose crossingelements are pivotally connected with each other at each crossing point, said at leastthree lazy tongs linkages being interconnected by means of a connector (5) pivotallysecured at each of opposite outer joints, so that said at least three united lazy tongslinkages form together a retractable (4), and said member being connected at either endwith said attachments (2, 3) by means of a device assuming the lateral movementsoccuring when the unit is retracted or extended, said device comprising shafts (21)provided at the ends of the retractable member at each outer joint, said shafts each

being slidably mounted in a bore (20) in members secured to the lower and to the upperattachment, respectively.

申请人：GUNNAR ROENN AB

地址：SE

国籍：SE

代理机构：Lettström, Richard Wilhelm

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