DE102005012899B3 - Spring system for motor vehicle seat, has spring with winding and end hooks, and vibration damper to suppress or damp vibrations of spring, where damper is firm body, which comes from inside with end section in attachment at winding - Google Patents

Abstract

The system has a spring (10) with a winding (16) and two end hooks, and a vibration damper (20) to suppress or damp the vibrations of the spring. The damper is a firm body, which comes from inside with an end section in attachment at the winding. The end section is arranged within the space that is enclosed by the winding. The damper is attached in another end section at one end hook of the spring.

Description

The The invention relates to a spring system in a vehicle seat.

Damped spring system in vehicle seats are known in principle. For example, in the DE 199 07 658 A1 described an elastomeric body for this purpose, dampens the internal friction occurring vibrations. By use, a spring system of the type mentioned above is known with a spring formed as an ordinary helical spring, in which a felt plug is pressed into the space enclosed by the winding of the spring, which vibrations of the spring occurs when friction occurs between the felt hair and the windings when the spring excites the winding suppressed or at least dampens. The installation of the felt plug is time consuming and therefore expensive due to its very yielding consistency. In addition, the felt hairs can get between the turns of the winding and thus reduce the functioning of the spring.

Of the Invention is based on the object, a spring system of the above to improve the type mentioned, especially in terms of costs. This object is achieved by a spring system with the features of claim 1 solved. advantageous Embodiments are the subject of the dependent claims.

Thereby, that the vibration damper a solid body which is at least one within that of the winding enclosed space arranged portion at oscillations of the spring from the inside comes into contact with the winding, simplifies and shortens the assembly, since no compression of the vibration damper in the Assembly is done and the subsequent expansion is not awaited must become. In addition, the solid body can be painted if necessary be without its functionality lose, as would be the case with felt-grafting. Such a spring system can find use in different places of a driving seat, but preferably on locking or unlocking devices of fittings or other seat adjusters.

Of the vibration preferably has several sections with different tasks on. Preferably, in a first end portion of the vibration damper on attached to the spring, in particular on an end hook, which the first end portion, preferably together with a subsequent arc section, by means of a receptacle, which preferably groove-shaped on the outer circumference formed of the first end portion and / or the bow portion is, receives, preferably positive fit to a relative movement between the first end portion and / or arc portion and the end hook to avoid the spring. A second end portion is preferably arranged within the winding and is for the plant to the winding responsible, wherein the second end portion is preferably formed club-shaped is, on the one hand not caught between the turns of the winding and on the other hand to apply a certain inertia, which absorbs and dampens the vibrations of the winding.

The various portions of the vibration damper are preferably in arranged on a common plane and point perpendicular to this approximately the same thickness, on the one hand, the own movements and Vibrations and the damping effect Concentrated in this level and on the other hand simplifies the production. Here is the vibration damper preferably a one-piece trained plastic body, which is produced by injection molding.

in the The following is the invention with reference to an illustrated in the drawing Embodiment explained in more detail. It demonstrate

1 a view of the embodiment,

2 a side view of the vibration,

3 a section along the line III-III in 2 , and

4 a perspective, schematic view of a vehicle seat.

A vehicle seat 1 a rear seat row of a motor vehicle has a seat part 3 and a backrest 4 on, which by means of a fitting 6 on each vehicle seat side on the seat part 3 attached and is pivotable relative to this. The directions used are determined by the arrangement of the vehicle seat 1 defined within the motor vehicle and its usual direction of travel.

At the fitting 6 is on the outward-facing side as part of the unlocking a spring 10 , More precisely, a tension spring, provided, which in this case an unlocking 12 holding in his rest position. In a conventional manner, the spring 10 two curved end hooks 14 at the ends and a helical vetch lung 16 in between. Functionally according to the preloaded spring 10 with a final hook 14 on the unlocking element 12 and with the other end hook 14 on the housing of the fitting 6 hooked. So that the spring 10 is generated by natural vibrations no noise is on the spring 10 a vibration damper 20 intended. The feather 10 and the vibration damper 20 define together a spring system.

The vibration damper according to the invention 20 is a solid, integrally formed plastic injection molded body. The term "solid" should not be understood as a complete rigidity, but rather a certain yielding. The approximately elongated vibration damper 20 has a first end portion at one end 22 in the form of a short, straight piece, to which an arc section 24 in the form of a semicircular curved, approximately toroidal piece connects. The first end section 22 and the bow section 24 are in shape to the end hooks 14 the feather 10 customized. In this case, the first end section 22 and in continuation of the arc section 24 on its outer peripheral surface a groove-shaped, semicircular profiled, over the entire outer periphery of the first end portion 22 and bow section 24 ongoing recording 26 on which one of the two end hooks 14 the feather 10 partially positively receives form-fitting. This is the vibration damper 20 at the spring 10 appropriate.

At the bow section 24 closes on the one from the first end section 22 opposite end at an obtuse angle, an angle section 28 at. The angle section 28 has a circular profile after a transition region. At the angle section 28 closes at the same obtuse angle an intermediate section 30 , wherein the dimensions are selected such that the first end portion 22 and the intermediate section 30 aligned with each other. First end section 22 , Bow section 24 , Angle section 28 and intermediate section 30 are all in a common plane E.

To the intermediate section 30 closes a second end section 32 on, which has a kind of club shape. Perpendicular to the plane E is the thickness of the second end portion 32 approximately equal to the thickness of the other sections 22 . 24 . 28 and 30 but the second end portion 32 in the plane E a significantly larger diameter compared to the other sections on. The angle section 28 is partial, the intermediate section 30 and the club-shaped second end portion 32 are completely inside of the winding 16 enclosed space arranged.

The club-shaped second end portion 32 is within the plane E on opposite sides at a small distance to the inside of the winding 16 forming turns of the spring 10 arranged. Preferably, there is a slightly touching contact between the second end portion 32 and the winding 16 , Come the spring 10 by vibrations to vibrate, the second end section sets 32 from the inside to the winding 16 , whereby these vibrations are suppressed or at least damped.

1

vehicle seat

3

seat part

4

rest

6

fitting

10

feather

12

unlocking

14

end hook

16

wrapping

20

vibration

22

first end

24

arc section

26

admission

28

angle section

30

intermediate section

32

second end

e

level

Claims (10)

Spring system in a vehicle seat, in particular motor vehicle seat, with a spring ( 10 ), which a winding ( 16 ) and two end hooks ( 14 ), and one of the spring ( 10 ) associated vibration damper ( 20 ), the vibrations of the spring ( 10 ) is suppressed or at least damped, and which is a solid body, which is within the one of the winding ( 16 ) enclosed space arranged section ( 32 ) at vibrations of the spring ( 10 ) from the inside in contact with the winding ( 16 ) comes. Spring system according to claim 1, characterized in that the vibration damper ( 20 ) in a first end section ( 22 ) on the spring ( 10 ) and with one within the winding ( 16 ) arranged second end portion ( 32 ) from the inside in contact with the winding ( 16 ) comes. Spring system according to claim 2, characterized in that the vibration damper ( 20 ) in the first end section ( 22 ) on a final hook ( 14 ) the feather ( 10 ) is attached. Spring system according to claim 3, characterized in that at least the first end portion ( 22 ) a recording ( 26 ), which at least partially the end hook ( 14 ) formschlüs takes sig. Spring system according to claim 4, characterized in that the receptacle ( 26 ) in one at the first end portion ( 22 ) subsequent, arcuate curved section ( 24 ) continues. Spring system according to claim 4 or 5, characterized in that the receptacle ( 26 ) groove-shaped on the outer periphery of the first end portion ( 22 ) and / or the bow portion ( 24 ) is trained. Spring system according to one of claims 2 to 6, characterized in that the second end portion ( 32 ) is formed club-shaped. Spring system according to one of claims 2 to 7, characterized in that the sections ( 22 . 24 . 28 . 30 . 32 ) of the vibration damper ( 20 ) are arranged in a common plane (E) and have approximately the same thickness perpendicular to this. Spring system according to one of claims 1 to 8, characterized in that the vibration damper ( 20 ) is an integrally formed plastic body. Spring system according to one of claims 1 to 9, characterized in that the spring system ( 10 . 20 ) a fitting ( 6 ) is assigned, by means of which a backrest ( 4 ) of a vehicle seat ( 1 ) relative to its seat part ( 3 ) is pivotable.