Seat having a flexible connection

A seat comprising:

• a rigid sitting surface (8) having a rear edge (25),
• a rigid sitting surface frame (2),
• a flexible sheet (3) which is rigid under traction,
• a backrest frame (1) including a device (7) for suspension of said flexible sheet (3),
• wherein the flexible sheet (3) is joined to the rigid sitting surface (8) to extend from an intersection area (9) of the rigid sitting surface (8), said intersection area (9) being located in front of the rear edge (25) of the rigid sitting surface (8) so that the rigid sitting surface has a rear sitting surface portion extending from said intersection area (9) to the rear edge (25) of the rigid sitting surface, such that:
• the suspension device (7) is higher than the rigid sitting surface (8),
• the intersection area (9) is, as a whole, in front of the suspension device (7),
• said flexible sheet (3) includes a transition panel (18):
• extending between the suspension device (7) and the intersection area (9),
• having a length such that the transition panel (18) is spaced apart from the rigid sitting surface (8) to define a separated portion of the rigid sitting surface (8),
• the sitting surface frame (2) forms a back leg assembly of the seat,
• at least one front portion of the separated portion is inclined downwards towards the rear and is curved, having a convexity which is oriented upwards.

A seat comprising:

• a rigid sitting surface (8) having a rear edge (25),
• a flexible sheet (3) which is rigid under traction,
• a backrest frame (1) including a device (7) for suspension of said flexible sheet (3),
• wherein the flexible sheet (3) is joined to the rigid sitting surface (8) to extend from an intersection area (9) of the rigid sitting surface (8), said intersection area (9) being located in front of the rear edge (25) of the rigid sitting surface (8) so that the rigid sitting surface has a rear sitting surface portion extending from said intersection area (9) to the rear edge (25) of the rigid sitting surface, such that:
• the suspension device (7) is higher than the rigid sitting surface (8),
• the intersection area (9) is, as a whole, in front of the suspension device (7),
• said flexible sheet (3) includes a transition panel (18):
• extending between the suspension device (7) and the intersection area (9),
• having a length adapted to define an area of separation (24) of the flexible sheet relative to the rigid sitting surface (8) in which the transition panel separates from contact with the rigid sitting surface (8), said separation area (24) intermediating between the rear edge (25) of the rigid sitting surface (8) and said intersection area (9) and being located behind said intersection area (9) when the transition panel (18) is subjected only to its own weight, said separation area (24) dividing the rear sitting surface portion of the rigid sitting surface (8) into a separated portion and a superposition portion;
• whereby the transition panel (18) is spaced apart from the rigid sitting surface (8) at said separated portion, which extends from the rear edge (25) to the separation area (24), and
• whereby the transition panel (18) is in contact with the rigid sitting surface (8) at said superposition portion, which extends from the separation area (24) to the intersection area (9),
• at least one front portion of the separated portion is inclined downwards towards the rear and is curved, having a convexity which is oriented upwards.