DE102017208688A1 - vehicle seat - Google Patents

Abstract

A vehicle seat (1, 1 ') is provided with a seat part (10) and a backrest (12) attached thereto and is displaceable from a substantially upright sitting position to a resting or reclining position, wherein a height adjustment device (H) is provided a front Höhenverstellelement (14, 14 ') and a rear height adjustment element (15), each with an upper pivot joint (16, 17) on a seat bottom (13) in the seat part (10) of the vehicle seat (1, 1') and a lower pivot joint (21, 22) is mounted on a vehicle-structural-side seat console element (20) and which is adjustable in each case for adjusting the height position of the seat part (10). It is provided that in addition to the height adjustment (H) independently of this actuatable Kippverstelleinrichtung (K, K ') is provided, which has the front height adjustment (14, 14') and with the distance between the upper pivot joint (16) and the lower pivot joint (21) of the front Höhenverstellelements (14, 14 ') is variable.

Description

TECHNICAL AREA

The invention relates to a vehicle seat according to the preamble of claim 1. It further relates to a vehicle with such a vehicle seat.

BACKGROUND OF THE INVENTION

Vehicle seats are intended to position vehicle passengers comfortably and safely in the vehicle. In addition, the intended as a driver's seat vehicle seat must be adjustable so that large and small people reach the steering wheel and pedals by adjusting the seat adjustment. Provided for this are longitudinal, vertical and backrest inclination adjustments. The longitudinal adjustability is usually ensured in vehicle seats by mounting the seat on seat rails. For not involved in the vehicle management vehicle passengers is often required to allow a rest or reclining position of the vehicle seat. While it is known to adjust the backrest of the vehicle seat to a shallower angle for a reclining position or a comfortable reclined seating position, the seat bottom, i.e., seat bottom, typically remains. the seat part on which the person sits in the same position as in an upright backrest. In order to take the most comfortable resting or reclining position, but should also the seat part of the vehicle seat with its front, facing away from the backrest end are placed upwards. Although it is in principle possible to adjust the inclination of the seat cushion independently of the backrest inclination by means of a seat angle adjustment present in many vehicle seats, such a separate adjustment of the seat bottom and backrest into a rest or reclining position will subsequently return the seat to an upright sitting position difficult.

PRESENTATION OF THE INVENTION

Object of the present invention is therefore to provide a generic vehicle seat in such a way that an inclination of the entire vehicle seat from a normal position in a rest or Liegesitzposition and Zurückverstellen in the normal position quickly and without complications are possible.

This object is achieved with the features of patent claim 1.

The vehicle seat according to the invention is provided with a seat part and a backrest attached thereto. The vehicle seat is displaceable from a substantially upright sitting position to a resting or reclining position. A height adjustment device is provided, which has a front height adjustment element and a rear height adjustment element, which is coupled in each case to an upper pivot joint with a seat bottom in the seat part of the vehicle seat and at a lower pivot joint with a vehicle structure side seat console element and each for adjusting the height and inclination the seat part is adjustable by means of a respective height adjustment device. According to the invention, it is provided that, in addition to the height adjustment device, an independently actuatable tilt adjustment device is provided which has the front height adjustment element and with which the distance between the upper pivot joint and the lower pivot joint of the front height adjustment element can be changed.

ADVANTAGES

In the upright sitting position ("normal position"), the vehicle seat is individually adapted to the body dimensions and needs of the person sitting on the vehicle seat, which is particularly important in the driver's seat. After a temporary use of the vehicle seat as a rest or reclining seat of the vehicle seat should be back as quickly as possible back to this normal position, so that the person does not first again consuming the appropriate normal position to determine and adjust. This is necessary in particular if, after a route in which the vehicle has been autonomously piloted, the driver must again take over control of the vehicle. This requirement is met with the vehicle seat according to the invention, since the Kippverstelleinrichtung, which allows an inclination of the vehicle seat in the rest or reclining position, regardless of the height adjustment device and thus independently of components of the seat adjustment is formed operable.

Further preferred and advantageous design features of the vehicle seat according to the invention are the subject of the dependent claims 2 to 6.

Preferably, the Kippverstelleinrichtung has an extension mechanism for the front height adjustment.

It is advantageous if the extension mechanism has a spindle drive.

Alternatively, the extension mechanism may comprise a multi-link transmission, in particular a four-bar linkage.

In an advantageous development, the front height adjustment element has a multi-part handlebar, one part of which forms or absorbs the height adjustment device and whose at least one further part forms the extension mechanism.

It is also advantageous if the front height adjustment element has a hydraulically, pneumatically, electrically or electromagnetically acting actuator which actuates the extension mechanism.

The invention is further directed to a vehicle having at least one vehicle seat according to the invention.

Preferred embodiments of the invention with additional design details and other advantages are described below with reference to the accompanying drawings and described.

list of figures

• 1 einen erfindungsgemäßen Fahrzeugsitz in der Normalposition;
• 2 den erfindungsgemäßen Fahrzeugsitz aus 1 in der Ruhe- oder Liegesitzposition und
• 3 eine alternative Ausführungsform des erfindungsgemäßen Fahrzeugsitzes in der Ruhe- oder Liegesitzposition.

It shows:

• 1 a vehicle seat according to the invention in the normal position;
• 2 the vehicle seat according to the invention 1 in rest or reclining position and
• 3 an alternative embodiment of the vehicle seat according to the invention in the resting or reclining position.

PRESENTATION OF PREFERRED EMBODIMENTS

1 shows a schematic representation of a vehicle seat 1 by means of a vehicle seat console 2 at the vehicle structure 30 of a vehicle 3 is appropriate.

The vehicle seat 1 has a seat part 10 and a backrest pivotally connected to the seat portion 12 on. The seat part 10 has one below the seat upholstery 11 provided seat bottom 13 on, the part of a support structure of the vehicle seat 1 is. The seat bottom 13 is about a trained as a pivot lever front height adjustment 14 and also formed as a pivoting element rear height adjustment 15 with a vehicle-structural-side seat console element 20 the vehicle seat console 2 connected. The swivel levers 14 . 15 are with their respective upper end on the seat bottom 13 in a front upper pivot 16 or a rear upper pivot joint 17 in each case one parallel to the vehicle transverse axis y extending axis pivotally mounted. With their respective lower end are the pivot lever 14 . 15 on the vehicle-structural-side seat console element 20 the vehicle seat console 2 in a respective lower pivot joint 21 . 22 pivotally mounted about a transverse axis extending parallel to the vehicle transverse axis. Both the upper pivot joints 16 . 17 as well as the lower swivel joints 21 . 22 are in the longitudinal direction, ie in the direction of the vehicle longitudinal axis x , spaced from each other.

The two pivot levers 14 . 15 form together with the vehicle structural side seat console element 20 and the seat bottom 13 a height adjustment device H in the form of a four-bar mechanism, by simultaneous pivoting of the pivot lever 14 . 15 a height adjustment of the seat part 10 relative to the vehicle structure 30 , ie in the z-direction of the vehicle. The pivoting of the pivot lever 14 . 15 can be done manually or by means of a (not shown) drive means. With this height adjustment, the inclination of the seat part changes 10 with the seat 11 opposite the vehicle structure 30 not, but only the vertical distance between the seat part 10 and vehicle structure 30 changed.

The vehicle structure-side seat console element 20 is in or on a structure-side fastener 23 the vehicle console longitudinally displaceable, ie in the direction of the longitudinal extent of the one with the vehicle structure 30 connected seat rail forming structure-side fastening element 23 the vehicle seat console 2 stored. By means of this longitudinally displaceable mounting of the vehicle seat 1 in the vehicle longitudinal direction x be moved.

The height adjustment device H can be continuously or incrementally actuated by mechanical, electrical, hydraulic, pneumatic or electromagnetic actuators (not shown) in addition to the height adjustment device H can be a separate from the height adjustment H actuated Kippverstelleinrichtung K for the vehicle seat 1 be provided, which will be described below.

In 2 a first embodiment of the vehicle seat according to the invention is shown in the resting or reclining position. In this embodiment, the front pivot lever 14 to form an extension mechanism 'V for the front pivot lever telescopically extendable and so in its longitudinal dimension between the lower pivot joint 21 and the upper pivot joint 16 adjustable trained whereby a Kippverstelleinrichtung K for the vehicle seat 1 is formed. The front pivot lever 14 has a lower pivot lever part 14A and an upper swing lever part 14B on, the telescopic are mutually displaceable, as indicated by the double arrow in 2 is shown symbolically. The two pivot levers 14 . 15 form so together with the seat bottom 13 and the seat console element 20 a four-bar mechanism arrangement, in which one of the two joints interconnecting lever, namely the pivot lever 14 , is variably adjustable in its length expansion.

An extension of the front pivot lever 14 from the in 1 shown normal configuration in the 2 shown extended configuration causes the vehicle seat 1 in the in 2 shown in a clockwise direction in the rest or reclining position is tilted, the front end 10 ' of the seat part 10 as by the arrow c in 2 symbolically represented, is moved upwards and being the upper end 12 ' the backrest 12 as by the arrow d in 2 symbolically represented, is moved backwards and downwards. The angle between the seat 11 and the backrest 12 remains unchanged.

The return of the vehicle seat 1 from the in 2 shown resting or reclining position in the in 1 shown upright sitting position is done in reverse order and with correspondingly opposite movements.

In the 3 illustrated alternative embodiment of the vehicle seat 1' corresponds in construction to the tilt adjustment device in 2 illustrated vehicle seat 1 , To form the Kippverstelleinrichtung K ' is another extension mechanism in this modified embodiment V ' for the front pivot lever 14 ' provided, wherein the front pivot lever 14 ' formed in three parts, with a lower pivot lever part 14'A , a middle swivel lever part 14'B and an upper swing lever part 14'c through a first intermediate joint 16 ' and a second intermediate joint 16 " one at a time parallel to the vehicle transverse axis y extending axis are pivotally connected to each other. The swivel lever parts 14'A . 14'B and 14'c are in the in 1 shown normal position congruent one behind the other. In the in 3 illustrated resting or reclining position, the three pivot lever elements 14'A . 14'B and 14'c deployed and form in this end position together a straight-line connection between the lower front pivot 21 and the upper front pivot 16 , where the two intermediate joints 16 ' and 16 " are set in this end position. Also at this in 3 shown variant is the front end 10 ' of the seat part 10 by unfolding the multi-part front pivot lever 14 ' moved upwards (arrow c ), with the top end 12 ' the backrest 12 is moved backwards and downwards (arrow d ).

The return of the vehicle seat 1' from the in 3 shown resting or reclining position in the upright sitting position (normal position) as shown in 1 takes place in reverse order and with correspondingly opposite movements, whereby first the intermediate joints 16 ' and 16 " be unlocked.

After swinging back the vehicle seat 1 . 1' according to the embodiment according to 2 or after 3 in the in 1 The upright sitting position shown will automatically adjust the original height position of the vehicle seat as shown in 1 is shown, taken again, so that no readjustment of the seat adjustment for the normal position is required.

The invention is not limited to the above embodiment, which merely serves to generally explain the essence of the invention. Within the scope of protection, the device according to the invention may also assume other than the above-described embodiments. In this case, the device may in particular have features that represent a combination of the respective individual features of the claims.

Reference signs in the claims, the description and the drawings are only for the better understanding of the invention and are not intended to limit the scope.

LIST OF REFERENCE NUMBERS

1

vehicle seat

2

vehicle console

3

vehicle

10

seat part

10 '

front end of the seat part

11

seat upholstery

12

backrest

12 '

upper end of the backrest

13

seat bottom

14

front pivot lever

14 '

front pivot lever

14A

lower swivel lever part

14B

Pivoting lever part

14C

Pivoting lever part

14'A

Pivoting lever element

14'B

Pivoting lever element

14'c

Pivoting lever element

15

pivoting lever

16

Upper swivel joint

16 '

intermediate joint

16 "

intermediate joint

20

Sub frame element

21

lower swivel joint

22

pivot

23

fastener

30

vehicle structure

y

Vehicle transverse axis

x

Vehicle longitudinal direction

H

height adjustment device

K

Kippverstelleinrichtung

K '

Kippverstelleinrichtung

V

extension mechanism

V '

extension mechanism

Claims (7)

Vehicle seat (1, 1 ') having a seat part (10) and a backrest (12) attached thereto, which is displaceable from a substantially upright sitting position to a rest or reclining position, wherein a height adjustment (H) is provided, the front Height adjustment (14, 14 ') and a rear height adjustment element (15), each with an upper pivot joint (16, 17) on a seat bottom (13) in the seat part (10) of the vehicle seat (1, 1') and with a lower Swivel joint (21, 22) is mounted on a vehicle-structural seat console element (20) and which is adjustable in each case for adjusting the height position of the seat part (10), characterized in that in addition to the height adjustment (H) independently operable Kippverstelleinrichtung (K, K ') is provided, which has the front height adjustment element (14, 14') and with which the distance between the upper pivot joint (16) and the lower pivot joint (21) of the front height adjustment element (14, 14 ') is variable. Vehicle seat after Claim 1 , characterized in that the Kippverstelleinrichtung (K, K ') has an extension mechanism (V, V') for the front height adjustment element (14, 14 '). Vehicle seat after Claim 2 , characterized in that the extension mechanism (V, V ') has a spindle drive as drive. Vehicle seat after Claim 2 , characterized in that the extension mechanism (V ') comprises a multi-link transmission, in particular a four-bar linkage. Vehicle seat after Claim 2 . 3 or 4 , characterized in that the front height adjustment element (14 ') has a multi-part handlebar (14'A, 14'B, 14'C), one part of which forms or accommodates the height adjustment device (14'A) and its at least one further part (14'B, 14'C) forms the extension mechanism (V '). Vehicle seat after one of Claims 2 to 5 , characterized in that the front height adjustment element (14, 14 ') comprises a hydraulically, pneumatically, electrically or electromagnetically acting actuator which actuates the extension mechanism (V, V'). Vehicle with at least one vehicle seat according to one of the preceding claims.

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