DE102009012776B3 - Vehicle seat, has guide rails and undercut grooves formed such that distance between guide rails and undercut grooves is changed during relative translatory motion of guide and push elements to each other - Google Patents

Abstract

The seat has an adjusting device for adjusting seat depth, and a guide element (12) engaged with guide rails at undercut grooves of a push element (2). The guide rails and the undercut grooves are formed such that a distance between the guide rails and the undercut grooves is changed during a relative translatory motion of the elements to each other. The guide rails are engaged with a foot strip in the undercut grooves. The guide rails and the undercut grooves are provided with mutually cooperating inclined surfaces.

Description

TECHNICAL AREA

The The present invention relates to a vehicle seat according to the preamble of claim 1.

STATE OF THE ART

For seat adjustment, there are a variety of ways that are described in the prior art. Once, this involves adjusting the entire seat along rails to accommodate differences in leg length. Here is for example from the DE 31 43 636 C2 a device for longitudinally displaceable motor vehicle seats for coupling the folding movement of the backrest with a longitudinal displacement of the seat known. In this case, tooth combs interact with actuating bars with toothed rails.

The However, the present invention primarily relates to the so-called seat depth adjusters, the independent of a displacement of the entire vehicle seat are operated can, to accommodate different thigh lengths.

Such a device is from the DE 10 2006 018 353 known. There, a device for adjusting the seat depth of a vehicle seat with a seat pan is known to which a Sitztiefenversteller is guided along rail elements, wherein an actuating handle is provided, via which the Sitztiefenversteller is releasable, wherein a rail element has a latching tooth, in which a latching hook with Locking elements engages.

Moreover, for example, in the DE 20 2007 002 803.2 a device for adjusting the seat depth of a vehicle seat shown, with a Sitztiefenversteller of two relatively movable guides and an operating handle over which a lock between the two guides is releasable, wherein the actuating handle is connected to a latching hook, which has a backdrop, in which is guided to unlock a link element on the operating handle.

Further, for example, in the DE 198 26 823 C1 a Sitztiefenverstellvorrichtung for a motor vehicle seat described in which the Sitztiefenverstellbereich is guided laterally. At Sitztiefenverstellbereich wheels are rotatably mounted, which run on firmly connected to the seat frame, mutually parallel counterparts, with wheels and counter-regions are each a form-fitting engagement with each other. The wheels are mounted rotatably about a vertical axis perpendicular to the longitudinal plane of the seat depth adjustment range on the seat depth adjustment range, and the wheels engaged with the counter areas have an opposite direction of rotation and are coupled to one another with no slip.

Furthermore, in the DE 10 2005 057 358 B3 a geared motor having a motor with a motor housing and an output shaft, a transmission having a transmission housing and an input shaft, wherein the output shaft of the engine and the input shaft of the transmission are coupled and the motor housing and the gear housing are rotationally connected to each other, wherein one of both housing has an internal thread and the other housing has an external thread, wherein the external thread is screwed into the internal thread and on the housings a positive locking is provided, which is automatically engaged with threaded-in threads and blocks a boring movement.

The sake of completeness is also on the DE 20 2006 004 613 U1 directed. There is a drive device for an adjustment in motor vehicles, in particular for a seat adjustment, given with an electric motor, an adjusting mechanism and arranged between the electric motor and the adjusting shaft, wherein the shaft is rigid.

The sake of completeness is also on the DE 25 39 332 A1 referenced, in which a vehicle seat, in particular for heavy vehicles, with two rigid frame and a cushioning device between the two frames is described.

The However, described Sitztiefenverstellvorrichtungen have the Disadvantage that they are complicated and thus sometimes laborious to handle. Furthermore, individual components have each other too much game, which prevents by different measures must become

TASK

The Object of the present invention is therefore an apparatus to create the seat depth of a vehicle seat, which eliminates the above-mentioned disadvantages.

SOLUTION OF THE TASK

to solution the task leads the mark of claim 1.

By This measure will become common today eliminates emerging problem that namely thrust part and guide part have too much play, especially if the device for seat depth adjustment completely undressed is. In this case, the driver or passenger with his lower leg hook under the extended part and lift this. For this Basically, the extended part must not have more than 4 mm play. According to This is avoided by the present invention in that the Game to the rail and groove is reduced. This way you can the prescribed game are complied with.

In a preferred embodiment the rail is designed as a horizontal L and engages with a Insert a foot strip into the undercut groove. It works especially the instep of the foot strip coincides with the groove cover. Their distance each other is reduced. For the sake of simplicity, this happens in that both have an oblique surface, the oblique runs to the thrust direction. When extending the seat depth adjuster so the distance between reduced the two inclined surfaces and so the game balanced. Of the invention, all other possible linear guides includes.

figure description

Further Advantages, features and details of the invention will become apparent the following description of preferred embodiments and by reference the drawings; these show in

1 a side view of an inventive device for adjusting the seat depth of a vehicle seat in an exploded view;

2 an approximately 45 ° rotated perspective view of the device according to 1 in exploded view;

3 an enlarged detail of two interacting components of the seat depth adjuster in the use position;

4 a further enlarged section of the illustration according to 3 ;

5 a schematic representation of the interaction of two components of the device for adjusting the seat depth.

From a vehicle seat not otherwise shown in detail is according to 1 a carrier sheet 14 represented, with which the device E is connected for adjusting the seat depth.

The device E has a guide element 12 , which with the carrier sheet 14 is connected, and a thrust element 2 on which slidably on the guide element 12 is arranged. On the guide element 12 a drive sits at an angle 1 ,

There is also a wave 3 to recognize. This is one-stop with the drive 1 in operative connection and accesses through a passage 10 of the push element 2 through, into an adapter 4 ,

On the adapter 4 sits as part of a transmission 5 a gear 6 , This gear 6 again engages in a gear 7 , Under the gear 7 is a gear 8th arranged. In 2 you can see how the gear is 8th in unspecified laterally mounted teeth of a tooth plate 9 intervenes.

The tooth plate 9 stands by the fasteners 11 . 13 detachable in connection with the guide element 12 ,

push element 2 and guide element 12 are assembled in position of use. That means, that they are movable relative to each other. For this purpose, the guide element engages 12 with bilateral rails 30.1 and 30.2 in respective grooves 31.1 and 31.2 of the pushing element. This intervention is in the 3 and 4 shown in more detail. The rail 30.1 is there with a protruding foot strip 32 provided in an undercut 33 which intervenes. It keeps an instep 34 this foot strip 33 a distance a from a groove cover 35 one.

The operation of the present invention is as follows:
When moving the push element 2 to guide element 12 there is a relative movement of the groove cover 35 opposite the instep 34 of the foot strip 32 , This relative movement is in 5 shown. It can be seen that both groove cover 35 as well as instep 34 each of an inclined surface 36 respectively. 37 are interrupted. If these bevels 36 and 37 approach, the distance a decreases to a distance a ₁ . This also a game between the thrust element and guide element is reduced to a degree, as prescribed, at the moment 4 mm.

The drive 1 drives through the flexible shaft 3 first on the adapter 4 arranged gear 6 at. This in turn drives the gear 7 on, which with the gear 8th sitting on a common unspecified wave.

This will be the gear 8th driven. This in turn stands with the teeth of the tooth plate attached to the side 9 in active connection. The tooth plate 9 is through the fasteners 11 . 13 with the guide element 12 releasably connected. Will now the tooth plate 9 from the gear 8th Expired, so move guide element 12 and carrier sheet 14 in the same way.

An intended reinforcement can be implemented in all conceivable forms. It serves to extend the durability of the entire device E again, by taking the leadership between the seat 14 and the pushing element 2 strengthened.

The present description relates to an electrically powered seat adjuster. However, the invention also includes differently driven or manually operated seat adjusters. LIST OF REFERENCE NUMBERS 1 drive 34 instep 2 pushing element 35 Nutdecke 3 wave 36 sloping surface 4 adapter 37 sloping surface 5 transmission a distance 6 gear e contraption 7 gear 8th gear 9 tooth plate 10 passage 11 fastener 12 guide element 13 fastener 14 support plate 30 rail 31 groove 32 foot strip 33 undercut

Claims (4)

Vehicle seat with a device (E) for adjusting the seat depth, which is a guide element ( 12 ) and a pushing element ( 2 ), wherein an element ( 12 or 2 ) with a rail ( 30.1 . 30.2 ) in an undercut groove ( 31.1 . 31.2 ) of the other element ( 2 or 12 ) engages, characterized in that rail ( 30.1 . 30.2 ) and groove ( 31.1 . 31.2 ) are formed in a manner such that when the two elements ( 2 . 12 ) to each other changed the distance between the rail and the groove. Vehicle seat according to claim 1, characterized in that the rail ( 30.1 . 30.2 ) is formed as a horizontal L and with a foot strip ( 32 ) into an undercut ( 33 ) of the groove ( 31.1 . 31.2 ) intervenes. Vehicle seat according to claim 2, characterized in that an instep ( 34 ) of the foot strip ( 32 ) the changing distance with a groove cover ( 35 ) trains. Vehicle seat according to at least one of claims 1 to 3, characterized in that rail ( 30.1 . 30.2 ) and groove ( 31.1 . 31.2 ) each a cooperating inclined surface ( 36 . 37 ) exhibit.