DE102006020370A1 - Vehicle seat, has backrest that is folded down under impact of spring device, where spring force acting against direction of loading position or appropriate torque is generated by spring device during exceeding intermediate position - Google Patents

Abstract

The seat has a seat part, and a backrest (3) that is folded down from an upright usage position into a horizontal loading position under impact of a spring device (6). A spring force acting in a direction of the loading position or appropriate torque is generated until an intermediate position is attained during the folding down of the backrest from the usage position into the loading position. A spring force acting against the direction of the loading position or appropriate torque is generated by the spring device during exceeding the intermediate position.

Description

The The invention relates to a seat, in particular a rear seat for a motor vehicle, with a seat part and one of their upright position of use about a horizontal, transverse to the sitting direction axis of rotation in a substantially horizontal loading position on the seat part folding backrest, wherein in the region of the axis of rotation at least one spring means on the backrest acts, which in the use position of the backrest on this in Direction of the loading position acting first torque generated.

State of technology

A generic vehicle seat is from the published patent application DE 10 2004 002 795 A1 known. The first torque is generated by the spring means only over a first Teilschwenkbereich the backrest, while the backrest works in the subsequent partial pivoting only under the action of gravity on the seat part.

task

Of the Invention is based on the object, the provision of the backrest to facilitate their use position and their intake of To dampen end positions.

solution

The The object is achieved in that in a generic seat the at least one spring means in loading position of the backrest an acting on this in the direction of the use position, the first Torque counteracted second torque generated. The rest is thereby when folding the spring means in an intermediate position held and must subsequently against the resistance of the spring means swung into the loading position and locked in this position become. After loosening the latch pivots the backrest by the spring force independently back to the intermediate position and can easily handle it manually be detected and folded back into the position of use.

Preferably both torques are from the same spring means, in particular a spiral spring causes.

characters

The Figures represent examples and schematically different versions of the invention.

It demonstrate:

1 a vehicle seat according to the invention in various positions,

2 a view of a spring means suitable for carrying out the invention,

3 a representation of the torques generated by this spring means,

4 another vehicle seat according to the invention.

The in 1 pictured vehicle seat 1 consists of a seat part 2 and a backrest 3 that with the seat part 2 about a tilt adjuster 4 about a horizontal, transverse to the sitting direction axis of rotation 5 connected is. The inclination adjuster 4 can instead of the seat part 2 also be connected directly to the vehicle body.

The backrest 3 can after releasing a locking device in the tilt adjuster 4 from its upright position of use G ( 1a ) forward on the seat part 2 in an approximately horizontal loading position L ( 1c ) and in this position again by the inclination adjuster 4 (or any other device) are locked.

In the area of the rotation axis 5 is the pitcher 4 with a spring means 6 in the form of a spiral spring 7 ( 2 ), whose inner end 8th rotatable with the backrest 3 and its outboard end 9 rotatably with the tilt adjuster 4 connected is. The spiral spring 7 is biased so that it in the use position G of the backrest 3 a forward in the direction of the loading position L acting first torque M1 and in loading position L of the backrest 3 generates an opposing torque M2. When folding the backrest 3 goes through the spiral spring 7 thus a rotational position A, in which it is tension-free. By its own weight, the backrest remains 3 when folding in an intermediate position B, the gravity relative to the rotational position A is a little forward in the direction of the loading position L. It is in the coil spring 7 already a restoring moment M2 * constructed, which (neglecting frictional forces) just the weight of the backrest 3 compensated.

Instead of acting in both directions spring means 6 can also, as in 4 shown, two separate spring means 6.1 and 6.2 be used, which together in 3 have shown spring characteristic, wherein the spring means 6.1 in the use position of the backrest 3 the torque M1 and the spring means 6.2 in loading position of the backrest 3 the restoring torque M2 generated.

1

vehicle seat

2

seat part

3

backrest

4

inclination adjustment

5

axis of rotation

6 6.1, 6.2

spring means

7

spiral spring

8th

inner End (the spiral spring)

9

outer end (the spiral spring)

M1, M2, M2 *

torques

G

use position

L

loading position

A

rotary position (Voltage-neutral)

B

intermediate position

Claims (2)

Seat, in particular rear seat for a motor vehicle, with a seat part ( 2 ) and one of its upright use position (G) about a horizontal, transverse to the sitting direction axis of rotation ( 5 ) in a substantially horizontal loading position (L) on the seat part folding backrest ( 3 ), wherein in the region of the axis of rotation at least one spring means ( 6 . 6.1 . 6.2 ) acts on the backrest, which generates in the position of use of the backrest acting on this in the direction of the loading position first torque (M1), characterized in that the at least one spring means ( 6 . 6.1 . 6.2 ) in loading position (L) of the backrest ( 3 ) acting on this in the direction of the use position (G), the first torque (M1) directed against the second torque (M2) generated. Seat according to claim 1, characterized in that both torques are generated by the same spring means.