Stairlift carriage and a stairlift

A stairlift carriage for moving along a stairlift guide, said stairlift carriage having:

• a first side for facing an upwardly inclined stairlift guide (190) section of the stairlift guide, and
• a second side for facing a downwardly inclined stairlift guide section of the stairlift guide, if the stairlift carriage is mounted on the stairlift guide;
• said stairlift carriage comprising:
• a carriage drive;
• and
• a frame, said frame being provided with:
• a platform for carrying a load
• a pair of guide wheels for following the stairlift guide, said guide wheels being spaced apart in a direction from the first side to the second side of the stairlift carriage and
• a body of revolution for moving along the stairlift guide if the stairlift carriage is mounted on the stairlift guide by contact with the stairlift guide and driven by the carriage drive, said body of revolution having an axis of rotation;
• wherein:
• the frame is provided with an arm having a primary arm section and a secondary arm section, the arm being at the primary arm section pivotably about a first axis connected to the frame and the body of revolution being rotatably about its axis of rotation connected to the secondary arm section, said first axis being parallel to the axis of rotation of the body of revolution;
• said first axis is relatively close to the first side and the axis of rotation of the body of revolution is relatively far away from the first side;
• and
• the relative positions of the axis of rotation of the body of revolution and of the first axis are chosen such that if the stairlift carriage is mounted on a horizontal straight stairlift guide the first axis is at a larger distance from a reference plane than from the axis of rotation of the body or revolution, wherein said reference plane is defined by:
• a first line of contact of the body of revolution with the stairlift guide when the carriage is at a first position on a horizontal straight stairlift guide;
• and
• a second line of contact of the body of revolution with the stairlift guide when the carriage is at a second position on the horizontal straight stairlift guide.