VEHICLE SEAT, IN PARTICULAR UTILITY VEHICLE SEAT

• US 20130221717A1
• Filed: 08/26/2011
• Published: 08/29/2013
• Est. Priority Date: 09/22/2010
• Status: Active Grant

• Current Assignee: Adient US, LLC (Adient plc)
• Original Assignee: Keiper GmbH & Company KG (Johnson Controls International plc)
• Inventors: Reichel, Uwe
• Granted Patent: US 9,150,122 B2
• Time in Patent Office: Days
• US Class Current: 297/311
• CPC Class Codes: B60N 2/02 the seat or part thereof being movable, e.g. adjustable adjustable arm-rests B60N2/75; adjustable head-rests B60N2/806
• CPC Class Codes: B60N 2/162 Scissors-like structure
• CPC Class Codes: B60N 2/501 actively controlled suspension, e.g. electronic control
• CPC Class Codes: B60N 2/505 Adjustable suspension including height adjustment
• CPC Class Codes: B60N 2/508 Scissors-like structure
• CPC Class Codes: B60N 2/525 using gas

Abstract

With a vehicle seat (1), in particular a utility vehicle seat, having a scissor-type stand (3), which is able to vibrate and which can be adjusted in terms of height, with a pneumatic spring (12) and at least one pair of cranks (8a, 8b), which intersect at a scissor shaft (10), and a control device (20) for level control and for height adjustment of the scissor-type stand (3), said control device being provided with a control element (26), a valve device (24) which can be controlled by the control element (26), for controlling the pneumatic spring (12), a switching element (23) which is movable relative to the control element (26) or to the valve device (24), and a bearing (22b) for the switching element (23), wherein the control element (26) and the valve device (24) are kinematically assigned to different parts of the scissor-type stand (3), such parts being movable relative to one another, the control element (26) is linked, by means of a connecting link (21), to a first crank (8a) of the pair of cranks (8a, 8b), the bearing (22b) is spaced apart from the scissor shaft (10) and connected with a second crank (8b) of the pair of cranks (8a, 8b), and the valve device (24) is connected with the switching element (23) which is movable relative to the control element (26).

Claims

1. A vehicle seat, in particular a utility vehicle seat, comprising:

a) a scissor-type stand, which is able to vibrate and which can be adjusted in height, and comprising a pneumatic spring and at least one pair of cranks, which intersect at a scissor shaft, and

b) a control device for level control and for height adjustment of the scissor-type stand, the control device comprising a control element, a valve device which can be controlled by the control element, for controlling the pneumatic spring, a switching element which is movable relative to the control element or to the valve device, and a bearing for the switching element, wherein the control element and the valve device are kinematically assigned to different parts of the scissor-type stand, such parts being movable relative to one another,

wherein the control element is linked, by a connecting link, to a first crank of the pair of cranks,

and wherein the bearing is spaced apart from the scissor shaft and connected with a second crank of the pair of cranks,

and wherein the valve device is connected with the switching element which is movable relative to the control element.

2. A vehicle seat according to claim 1, wherein the bearing rotatably supports the switching element about an axis and the switching element rotatably supports the control element about the axis.

3. A vehicle seat according to claim 2, wherein the control element, the switching element and the bearing are arranged radially one inside the other with respect to the axis.

4. A vehicle seat according to claim 2, wherein the valve device comprises tappets which, for cooperating with the control element protrude in the interior of the switching element.

5. A vehicle seat according to claim 2, wherein the control element comprises a control slot, which, in the event of a relative rotation of control element and switching element, controls the valve device.

6. A vehicle seat according to claim 2, wherein the switching element comprises a roll onto which a cable can be partially wound and which is pretensioned.

7. A vehicle seat according to claim 6, wherein the switching element, relative to the axis, axially protrudes on both sides from the bearing, and wherein the valve device is arranged on one side of the switching element, and the cable roll is arranged on an opposed side of the switching element.

8. A vehicle seat according to claim 6, wherein the control device comprises an actuating element which moves the cable and thus rotates the switching element.

9. A vehicle seat according to claim 1, wherein the connecting link is connected to the first crank or a first transverse pipe between two first cranks which are fixedly connected with each other, and to the control element, and wherein the seat comprises a stroke compensating device.

10. A vehicle seat according to claim 1, wherein the control device has a base the bearing, such base being connected to the second crank and/or a transverse pipe between two second cranks which are fixedly connected with one another, and to the scissor-type stand.