Bogie for moving a chair along a stairlift rail, and stairlift provided therewith

Abstract

The invention relates to a bogie (1) and for moving a chair (120) along a stairlift rail (180), and to an assembly comprising such a bogie. The bogie comprises: a frame (2); a differential mechanism (10) comprising a first connector block (70; 570) and a second connector block (80; 580) which are rotatable relative to each other around a first common axis (A) and opposite to each other in accordance with a bar differential mechanism or in accordance with a gear differential mechanism; a wheel drive (20), attached to the frame (2) and comprising a drive wheel (23) for contacting the stairlift rail, wherein the wheel drive (20) is adapted for rotating the drive wheel (21) around a drive axis (D) to drive movement of the bogie (1) along the stairlift rail (180); a first bracket (30) rotatably mounted to the first connector block (70; 570) to be rotatable relative to the first connector block (70; 570) around a third axis (E) and provided with a first set of guide wheels (31a — 36a, 31b —36b) adapted for contacting the rail; and a second bracket (50) rotatably mounted to the second connector block to be rotatable relative to the second connector block around a fourth axis (F) and provided with a second set of guide wheels (51a—56a, 51b—56b) adapted for contacting the rail.