DE102007060075A1 - Seat i.e. motor vehicle seat, has spine label automatically adapting maximum position of curvature, where adjustment is initiated by applying pushing-back force directed against front position, and label is locked in desired position - Google Patents

Abstract

The seat has a backrest (14) movably arranged for an adjustment on a supporting structure with a contour adaptation of a backrest area. The structure has a base framework (18B) with a contour adaptive element i.e. spine label (15), released by a locking and release mechanism i.e. sliding lever, of an adjusting device. The element automatically adapts a maximum position of curvature by adjusting frames (17). An adjustment into a desired position of curvature is initiated by applying a pushing-back force directed against a front position, and the label is locked in the desired position. The spine label is manufactured from a flexible material.

Description

The The invention relates to a seat, in particular vehicle seat, with the in the preamble of claim 1 mentioned features.

It is known seats, in particular motor vehicle seats, in various Use versions and the motor vehicle seats according to the concomitant adjustment with as possible easy-to-handle operating options.

modern and comfortable motor vehicles provide in the front seats and rear seats now a number of adjustment options.

such Motor vehicle seats usually have a seat part and a backrest part on, which by means of several actuators relative to each other and adjustable relative to the seat base held on the vehicle floor are.

Known Motor vehicle seats have the following according to the state of the art Adjustments on: The seat part is for example with a device for height adjustment, tilt adjustment, Seat depth adjustment and seat length adjustment equipped. The backrest part has, for example, a device for backrest adjustment, backrest adjustment and one belonging to the standard Height adjustment of a headrest on. Further is the backrest part in modern and in particular in motor vehicles known from the luxury class with at least one Four-way lordosis equipped with its own facility to adjust the lordosis.

Further Different concepts are known that are particularly suited to the comfort wishes the motor vehicle user adapted ergonomic adjustment exhibit.

These concepts are for example in the scriptures DE 196 44 376 A1 . DE 196 31 454 C2 . DE 199 29 418 and DE 100 03 220 A1 already described. The devices described therein have in common that electronic devices are arranged, the ken Bewir ken taking certain data of the user ergonomic adjustment of the seat. However, these electronic devices are subject metrologically with errors and also complicated systems that require a lot of effort in practice to come to optimized and automatically enforcing settings of the seat.

Further These are usually options that run as additional options the seat adaptation with operating activities of the vehicle users connected, which are partly overwhelmed and ultimately make incorrect settings.

Starting from this prior art show 1 and 2 the following scientific results regarding the determination of necessary contour adjustments for persons of a [5% il] and a [95% il] percentile group. Anthropometric studies of [5% il] and [95% il] percentile groups have revealed back contours, which statistically are likely to be favored by inmates. These contours are in 1 isolated and in 2 superimposed. It can in particular by the superposition of the contours in 2 It should be noted that contours in the seating area are superimposed, but must be moved in the backrest area via a pivot point to ensure optimum adjustment of the back contour of the seated.

outgoing from these considerations and statistical findings the object of the invention is to provide a seat, depending on the different sizes, the person sitting in a vehicle seat, persons comfortable and light is adaptable to the body contours of these persons and its operation can also be easily accomplished.

The Task becomes in connection with the characteristics of the generic term of the Patent claim 1 achieved in that the contour adaptive Element is a continuous spine shield, the automatically via at least two adjustable stirrups a predeterminable, front position, in particular a maximum curvature position, assumes, after contour adjustment, the body facing the seat of the sitter, an adjustment to the desired position by Application of a directed against the front position back force adjustable and the spine shield in a desired Position, in particular a desired curvature position, is lockable again.

In the dependent claims are advantageous embodiments of Invention specified.

Of the Back plate is on the adjustment bracket on adapted the desired shape. These are the adjustment on the spine shield. The top adjustment bar is conveniently via pivot bearing with the spine shield connected and thus specifies the altitude of the contour.

The lower adjustment brackets are slidably against the spine shield and thus allow an angular adjustment of the contour. Here are the adjustment bracket at its ends rotatably mounted in the backrest side base frame.

The Adjustment brackets are advantageous over gas springs biased and also fixed. The gas springs can over release and bring the locking and unlocking mechanism the spring force against which the physical strength of the sitter acts.

conveniently, the gas springs are released via a lever and locked again, which allows a one-hand operation. It works the lever on Bowden cables or the like all gas springs used.

Instead of of course, the gas springs can also others suitable spring elements are used.

A Good contour adaptation is also achieved by the fact that the spine shield slotted vertically and made of a flexible material. The spine shield can thus with appropriate material thickness adapt flexibly to the body of the person sitting.

By the bias of the spine shield is also a Protrusion of the backrest surface, against which affects the physical strength of the sitter.

A Backrest can be easily made by the Back shield foamed with foam to a back element becomes. The backrest is with the aforementioned elements Also shaped to be easy with a pre-made bag cover can be obtained.

The Invention will be described below as an exemplary embodiment the accompanying drawings explained. Show it:

1 individual backrest profile curves of the body contour of vehicle occupants of different percentile groups;

2 Superimposed backrest profile curves of the body contour of vehicle occupants of different percentile groups and

3 a rear view of a contoured fit with its components.

The 1 and 2 have already been described in the introduction, with reference to the figures, the fundamental problem of the necessary contour adjustment has been shown.

In 3 is the mechanics of a backrest 14 a vehicle seat shown. With the base frame 18B All mechanical components are held together. The contact surface for the back of the seated is essentially by the one-piece spine shield 15 educated. This spine shield 15 is through the two adjustment 17 held in his position. These are on the back plate 15 the shield plates 152 attached to the bearings for the adjustment 17 hold. The bearing for the upper adjustment bracket is as a pivot bearing 172 executed and defines the altitude of the spine shield 15 ,

The bearing for the lower adjustment bracket 17 is as a plain bearing 173 executed and thus allows a largely free position of the spine shield in the lower area.

The spring force for the adjustment is made by gas springs 19 applied, of which only the one for the lower adjustment 17 recognizable at its upper end in the figure.

The gas springs are through the lever 750 unlockable and lockable again. The lever 750 acts on not visible in the figure Bowden cables on all gas springs 19 ,

14

backrest

15

carapace

151

slot in the spine shield

152

shield plate

17

Adjustment frame

171

pivot point of the adjustment

172

pivot bearing

173

bearings

18B

backrest side basic frame

19

gas spring

750

release lever

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19644376 A1 [0007]
• - DE 19631454 C2 [0007]
• - DE 19929418 [0007]
• - DE 10003220 A1 [0007]

Claims (11)

Seat, in particular a motor vehicle seat, with a seat part and a backrest which can be displaced relative thereto ( 14 ), whereby the backrest ( 14 ) is movably arranged under contour adjustment of a backrest surface to its adjustment to a support structure of the seat, wherein the support structure, a backrest side base frame ( 186 ), in which a contour-adaptive element is arranged, which by a locking and unlocking mechanism ( 750 ) is releasable an adjusting device, characterized in that the contour-adaptive element is a continuous spine shield ( 15 ), which automatically via at least two adjustment ( 17 ), a predeterminable, front position, in particular a maximum curvature position, occupies, after which adjusting the contour of the seat facing body parts of the seated, adjustable to the desired position by applying a directed against the front position back pressure adjustable and the spine shield ( 15 ) in a desired position, in particular a desired curvature position, can be locked again. Seat according to claim 1, characterized in that the uppermost adjustable bar ( 172 ) via pivot bearings ( 171 ) with the spine shield ( 15 ) connected is. Seat according to claim 1, characterized in that further adjusting yokes ( 173 ) slidably against the spine shield. Seat according to claim 1, characterized in that the adjustment ( 17 ) rotatable at its ends with the backrest side base frame ( 18B ) are connected. Seat according to claim 1, characterized in that the adjustment ( 17 ) each via a releasable gas spring ( 19 ) are fixed. Seat according to claim 5, characterized in that the gas springs ( 19 ) via a lever ( 750 ) and Bowden cables are shared. Seat according to claim 1, characterized in that the spine shield ( 15 ) is slotted vertically. Seat according to claim 7, characterized in that the spine shield ( 15 ) is made of a flexible material. Seat according to claim 8, characterized in that the spine shield ( 15 ) has a protrusion by a spring preload. Seat according to claim 7, characterized in that the spine shield ( 15 ) is foamed with foam to a back element. Seat according to one of the preceding claims, characterized in that the backrest ( 14 ) with a cover sewn in a bag shape.