Vehicle seat comprising adjustable damper

Patent metadata

Field	Value
Publication number	US-10654381-B2
Application number	US-201816031052-A
Country	US
Kind code	B2
Filing date	Jul 10, 2018
Priority date	Jul 10, 2017
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

Vehicle seat comprising an upper seat part and a lower seat part, the upper seat part and the lower seat part being connected by a scissor-action frame, and comprising a damper, the scissor-action frame comprising a first scissor arm and a second scissor arm, the first scissor arm and the second scissor arm being mounted so as to be rotatable about a common swivel axis, a first end of the damper being rotatably connected to the first scissor arm, a first lever element and a second lever element being provided, a first end of the first lever element being rotatably connected to the first scissor arm and a first end of the second lever element being rotatably connected to the second scissor arm and a second end of the damper being rotatably connected to a second end of the first lever element and to a second end of the second lever element.

First claim

What is claimed is:

1. A vehicle seat comprising:
an upper seat part and a lower seat part, the upper seat part and the lower seat part being connected by a scissor-action frame, and comprising a damper, the scissor-action frame comprising a first scissor arm and a second scissor arm, the first scissor arm and the second scissor arm being mounted so as to be rotatable about a common swivel axis, a first end of the damper being rotatably connected to the second scissor arm,
wherein a first lever element and a second lever element are provided, a first end of the first lever element being rotatably connected to the first scissor arm, a first end of the second lever element being rotatably connected to the second scissor arm, and a second end of the damper being rotatably connected to a second end of the first lever element and to a second end of the second lever element.

2. The vehicle seat according to claim 1 , wherein the first end of the first lever element is rotatably connected to the first scissor arm by means of a first swivel axis and the first end of the second lever element is connected to the second scissor arm by means of a second swivel axis and the second end of the first lever element, and the second end of the second lever element and the second end of the damper are connected by means of a third swivel axis.

3. The vehicle seat according to claim 2 , wherein in a first state in which the vehicle seat is completely compressed, a first connection line between the first swivel axis and the third swivel axis and a second connection line between the second swivel axis and the third swivel axis form an acute angle.

4. The vehicle seat according to claim 2 , wherein in a second state in which the vehicle seat is completely extended, a first connection line between the first swivel axis and the third swivel axis and a second connection line between the second swivel axis and the third swivel axis form an obtuse angle.

5. The vehicle seat according to claim 2 , wherein the second lever element is U-shaped when viewed in at least one direction that is perpendicular to the first swivel axis and comprises a first leg and a second leg, the first leg being rotatably connected to the first scissor arm and the second leg being rotatably connected to the third swivel axis.

6. The vehicle seat according to claim 2 , wherein the first lever element is shaped like a plate.

7. The vehicle seat according to claim 5 , wherein the second end of the second lever element is arranged between the first leg and the second leg when viewed in the direction of longitudinal extension of the third swivel axis.

8. The vehicle seat according to claim 2 , wherein the first scissor arm and the second scissor arm each comprise a floating bearing and a fixed bearing, the fixed bearing of the first scissor arm being connected to the upper seat part and the fixed bearing of the second scissor arm being connected to the lower seat part.

9. The vehicle seat according to claim 8 , wherein a distance between the first swivel axis and the common swivel axis is smaller than a distance between the first swivel axis and the floating bearing of the first scissor arm, and a distance between the second swivel axis and the common swivel axis being smaller than a distance between the second swivel axis and the floating bearing of the second scissor arm.

10. The vehicle seat according to claim 1 , wherein the vehicle seat also comprises a pneumatic spring for cushioning the vehicle seat, the pneumatic spring being connected to the scissor-action frame and to the upper seat part or the lower seat part.

11. A commercial vehicle, comprising a vehicle seat according to claim 1 .

12. The vehicle seat according to claim 2 , wherein in a second state in which the vehicle seat is completely extended, a first connection line between the first swivel axis and the third swivel axis and a second connection line between the second swivel axis and the third swivel axis form an obtuse angle, wherein the angle is larger than 170°.

13. The vehicle seat according to claim 2 , wherein in a second state in which the vehicle seat is completely extended, a first connection line between the first swivel axis and the third swivel axis and a second connection line between the second swivel axis and the third swivel axis form an obtuse angle, wherein the angle is larger than 175°.

14. The vehicle seat according to claim 2 , wherein in a second state in which the vehicle seat is completely extended, a first connection line between the first swivel axis and the third swivel axis and a second connection line between the second swivel axis and the third swivel axis form an obtuse angle, wherein the angle is 180°.

15. The vehicle seat according to claim 3 , wherein the angle is smaller than 10°.

16. The vehicle seat according to claim 3 , wherein the angle is smaller than 5°.

17. The vehicle seat according to claim 3 , wherein the angle is smaller than 3°.

Assignees

• Grammer Ag

Inventors

• Lorey Konstantin
• Krivenkov Konstantin

Classifications

• B60N2/508

  Scissors-like structure · CPC title

• B60N2/502

  attached to the base of the seat (B60N2/504 takes precedence) · CPC title

• B60N2/525

  using gas · CPC title

• B60N2/522 Primary

  characterised by dampening means · CPC title

• B60N2/16

  height-adjustable · CPC title