Synchronous mechanism for a piece of seating furniture, and piece of seating furniture

A synchronous mechanism (18) for a seating furniture (1), for a chair,

• with a seat surface support (4) for supporting a seat surface (2) in an intended final assembly state of the seating furniture (1),
• with a bending element (20), the length of which extends in sagittal direction (30) over a major part of a seat depth of the seat surface support (4), and which is movably coupled to the seat surface support (4) with respect thereto,
• with a backrest support (16) for supporting a backrest (14), said backrest support being mounted movably relative to the bending element (20), wherein the backrest support (16) merges at an end into a pivot lever (32) which is coupled to the bending element (20) at a pivot point (34) so as to be pivotable about an axis of rotation transverse to the sagittal plane, wherein a lever section (38) of the pivot lever (32) is in contact with the seat surface support (4) at a bearing point (40), and wherein, an unloaded state of the seat furniture (1), the pivot point (34) lies higher than the bearing point (40) when viewed in the height direction.