Automobile vehicle seat including a backrest pivoting in relation to the seat pan and which can be placed in table position

• US 20070001474A1
• Filed: 06/19/2006
• Published: 01/04/2007
• Est. Priority Date: 06/20/2005
• Status: Active Grant

• Current Assignee: Faurecia Sieges D'Automobile (Stellantis NV)
• Original Assignee: Faurecia Sieges D'Automobile (Stellantis NV)
• Inventors: Bequet, Pierre, Aufrere, Christophe
• Granted Patent: US 7,328,930 B2
• Time in Patent Office: Days
• US Class Current: 296/65.10
• CPC Class Codes: B60N 2/045 Longitudinal adjustment by means of articulated rods supporting the seat, e.g. parallelogram mechanisms B60N2/38 takes precedence
• CPC Class Codes: B60N 2/3011 the back-rest being hinged on the cushion, e.g. "portefeuille movement"
• CPC Class Codes: B60N 3/001 of tables or trays

Abstract

The seat includes a backrest (2) installed so as to pivot on the seat pan (1) and arranged to be placed in a table position where the rear wall of the backrest is maintained in horizontal position, more or less parallel to a seat support frame (3) arranged to be attached to the floor (5) of the vehicle, the seat pan (1) being itself installed on the said frame in a tiltable manner, so that it can be positioned, with a sufficient tilt angle, the rear of the seat pan being raised, so that the backrest tilted on the seat pan can be placed in the said table position. The seat pan (1) is attached to the frame (3) by a set of links (6, 7) forming, with the frame and the seat pan, a deformable quadrilateral (ABCD) such that a pivoting of the links leads to the deformation of the said quadrilateral to place the seat pan in the said sufficient tilt angle position, and locking means (10) are provided to lock the pivoting of the links in relation to the seat pan or the frame.

Claims

1. Automobile vehicle seat including a backrest (2) installed so as to pivot on the seat pan (1) and arranged to be placed in a table position where the rear wall of the backrest is maintained horizontal more or less parallel to a seat support frame (3) arranged to be attached to the floor (5) of the vehicle, the seat pan (1) itself being installed in a tiltable manner on the said frame so that it can be positioned with a sufficient tilt angle, the rear of the seat pan being raised, so that the backrest tilted on the seat pan can be placed in the said table position,

characterised in that the seat pan (1) is connected to the frame (3) by a set of links (6, 7) forming the two opposite sides of a deformable quadrilateral (ABCD) the two other sides of which are formed respectively by the frame and the seat pan and such that pivoting of the links leads to the deformation of the said quadrilateral so as to place the seat pan in the said sufficient tilt angle position, and locking means (10) are provided to lock the pivoting of the links in relation to the seat pan or the frame.

2. Seat in accordance with claim 1, characterised in that the set of links includes front links (6) hinged on the frame (3) at a point A and on the seat pan (1) at a point B, and rear links (7) hinged on the frame at a point D and on the seat pan at a point C, the distance BC being lower than the distance AD.

3. Seat in accordance with claim 1, characterised in that the links (6, 7) are arranged so that the seat pan (1) can be placed in one or more relaxation positions, the rear of the seat pan being lowered, the locking means (10) allowing the links to be locked in each of the said relaxation positions.

4. Seat in accordance with claim 1, characterised in that it includes airbags of chest-pelvis type placed in the sides of the backrest (2).

5. Automobile vehicle seat including a seat pan (1) installed so that it can tilt on a seat support frame (3) arranged to be attached to the floor (5) of the vehicle, and a backrest (2) installed so as to pivot on the seat pan and tiltable on the seat pan to a stop position, characterised in that the seat pan is connected to the frame by a set of links (6, 7), hinged on the frame and the seat pan and lockable in tilt angle, forming with the frame and the seat pan a deformable quadrilateral (ABCD) such that the seat can be placed in the following positions:

a current utilisation position, in which the backrest (2) is raised and the seat pan (1) is tilted towards the rear in relation to the floor (5) according to a basic tilt angle, the rear of the seat pan being lower than the front,

a table function position, in which the rear of the seat pan is raised, the seat pan being tilted towards the front in relation to the floor according to a sufficient tilt angle so that a rear wall of the backrest can be maintained in horizontal position, more or less parallel to the floor.

6. Seat in accordance with claim 5, characterised in that the deformable quadrilateral (ABCD) can be deformed so that the seat can be complementarily placed in one or more relaxation positions in which the backrest is raised and the seat pan is tilted towards the rear in relation to the floor according to one or more tilt angles greater than the basic tilt angle.