VEHICLE SEAT, IN PARTICULAR COMMERCIAL VEHICLE SEAT

• US 20100066146A1
• Filed: 02/18/2008
• Published: 03/18/2010
• Est. Priority Date: 02/21/2007
• Status: Active Grant

• Current Assignee: Adient US, LLC (Adient plc)
• Original Assignee: Keiper GmbH & Company KG (Johnson Controls International plc)
• Inventors: Nieroba, Christof, Schweizer, Thorsten, Weber, Thomas, Gundall, Thomas, Nissen, Rüdiger
• Granted Patent: US 8,303,037 B2
• Time in Patent Office: Days
• US Class Current: 297/340
• CPC Class Codes: B60N 2/0705 omega-shaped
• CPC Class Codes: B60N 2/162 Scissors-like structure
• CPC Class Codes: B60N 2/181 Rods
• CPC Class Codes: B60N 2/1839 pivoting about an axis located in an intermediate position
• CPC Class Codes: B60N 2/1867 Cycloidal or planetary mechanism
• CPC Class Codes: B60N 2/22 the back-rest being adjustable B60N2/2878 takes precedence
• CPC Class Codes: B60N 2/4221 due to impact coming from the front
• CPC Class Codes: B60N 2/508 Scissors-like structure

Abstract

A vehicle seat (1), in particular a commercial vehicle seat, is provided with a scissor-type stand (3) with a seat frame (10) that is articulated thereto by a pivoting axis (B), the seat frame being able to incline in relation to the scissor-type stand (3), and a back rest (20) that is attached to the seat frame (10). The seat frame (10) is articulated directly to the scissor-type stand (3) and is connected in an articulated manner to the scissor-type frame (3) by at least one three-hinged element.

Claims

1. A vehicle seat comprising:

a scissors-type stand;

a seat frame which is coupled to the scissors-type stand at a pivot axis and which can be adjusted in its inclination relative to the scissors-type stand;

a backrest which is attached to the seat frame or to the scissors-type stand, the seat frame being coupled directly to the scissors-type stand; and

at least one triple-jointed element connecting the seat frame in an articulated manner to the scissors-type stand

2. The vehicle seat as claimed in claim 1, wherein at least one inclination-adjusting fitting is provided in the triple-jointed element, said inclination-adjusting fitting defining an inclination-adjusting axis and being effective between the seat frame or the scissors-type stand and a link of the triple jointed element.

3. The vehicle seat as claimed in claim 2, wherein a first joint which is aligned with the inclination-adjusting axis is provided on the vehicle seat side which lies opposite the inclination-adjusting fitting.

4. The vehicle seat as claimed in claim 3, wherein a first lever is fastened to a fitting part of the inclination-adjusting fitting, the link being connected to the first lever in an articulated manner by means of a second joint, with the second joint coupled directly to the first lever, with respect to the inclination-adjusting axis, or arranged axially offset with respect to the first lever.

5. The vehicle seat as claimed in claim 4, wherein a second lever is coupled by means of the first joint, to which second lever a further link is connected in an articulated manner by means of a further second joint, with the further second joint coupled directly to the second lever, with respect to the inclination-adjusting axis, or arranged axially offset with respect to the second lever.

6. The vehicle seat as claimed in claim 5, further comprising a crosspiece provided between the fitting part of the inclination-adjusting fitting or the first lever and the second lever, said crosspiece being arranged parallel to the inclination-adjusting axis or in alignment therewith, and being connected fixedly to said fitting part, first lever and second lever and being provided with the axially offset second joint.

7. The vehicle seat as claimed in claim 2, wherein the link is coupled to the scissors-type stand or to the seat frame by means of a third joint.

8. The vehicle seat as claimed in claim 2, wherein the inclination-adjusting axis and joints of the link define the triple-jointed element.

9. The vehicle seat as claimed in claim 1, further comprising at least one backrest fitting wherein the backrest is attached pivotably by means of the at least one backrest fitting to the seat frame or to the scissors-type stand or to backrest adaptors fastened to the seat frame or to the scissors-type stand.

10. The vehicle seat as claimed in claim 2, further comprising at least one backrest fitting wherein the backrest is attached pivotably by means of the at least one backrest fitting to the seat frame or to the scissors-type stand or to the backrest adaptors fastened to the seat frame or to the scissors-type stand wherein the inclination-adjusting fitting and/or the backrest fitting form, in terms of structure, a disk-shaped unit or are provided with radially protruding fastening tabs, and/or in that the inclination-adjusting fitting and/or the backrest fitting is/are designed as a latching fitting or as a geared fitting, with a self-locking eccentric epicyclic gearing.

11. The vehicle seat as claimed in claim 1, wherein the scissors-type stand has a bottom frame, a top frame arranged thereabove and at least one pair of crossed rockers by means of which the top frame can be adjusted in height over the bottom frame.

12. The vehicle seat as claimed in claim 11, wherein the scissors-type stand has a first catch element and the seat frame has a second catch element, which catch elements do not normally interact and, in the event of a crash or misuse, approach each other because of a torque caused to act on the seat frame by means of the backrest, and then interact creating a further path for the force flux.

13. A vehicle seat comprising:

a scissors-stand including a bottom frame, a top frame arranged above the bottom frame and a pair of crossed rockers for adjusting the top frame in height relative to the bottom frame;

a seat frame;

a pivot with a pivot axis, the seat frame being connected to the scissors-stand by the pivot for seat frame inclination relative to the scissors-stand about the pivot axis;

a backrest attached to the seat frame or to the scissors-stand;

a triple-jointed element connecting the seat frame in an articulated manner to the scissors-stand.

14. The vehicle seat as claimed in claim 13, wherein the triple jointed element comprises a link and an inclination-adjusting fitting with an inclination-adjusting axis, said inclination-adjusting fitting acting between one of the seat frame and the scissors-stand and said link.

15. The vehicle seat as claimed in claim 14, further comprising another side triple-jointed element provided on another side of the vehicle seat from said triple-jointed element, said another side triple-jointed element comprises a first joint aligned with the inclination-adjusting axis and provided on the vehicle seat side which lies opposite the inclination-adjusting fitting.

16. The vehicle seat as claimed in claim 15, wherein said triple-jointed element includes a first lever fastened to a fitting part of said inclination-adjusting fitting, said link being connected to the first lever in an articulated manner by means of a second joint with said second joint coupled directly to said first lever, with respect to the inclination-adjusting axis or arranged axially offset with respect to said first lever.

17. The vehicle seat as claimed in claim 16, wherein a second lever is coupled by means of said first joint to said seat frame and said second lever is articulated to a further link by a further second joint, the further second joint being coupled directly to the second lever, with respect to the inclination-adjusting axis or being arranged axially offset with respect to the second lever.

18. The vehicle seat as claimed in claim 17, further comprising a crosspiece provided between the fitting part of the inclination-adjusting fitting or the first lever and the second lever, said crosspiece being arranged parallel to the inclination-adjusting axis or in alignment therewith, and being connected fixedly to said fitting part, said first lever and said second lever and being provided with the axially offset second joint.

19. The vehicle seat as claimed in claim 14, wherein the link is coupled to the scissors-stand or to the seat frame by means of a third joint.

20. The vehicle seat as claimed in claim 13, further comprising at least one backrest fitting wherein the backrest is attached pivotably by means of\the at least one backrest fitting to the seat frame or to the scissors-stand or to backrest adaptors fastened to the seat frame or to the scissors-stand.