WO2019012025A1

WO2019012025A1 - Vehicle seat with a seat adjusting mechanism

Info

Publication number: WO2019012025A1
Application number: PCT/EP2018/068883
Authority: WO
Inventors: Karthikeyan Maharajapuram SUBRAMANIAN; Andre Dick
Original assignee: Adient Engineering and IP GmbH
Priority date: 2017-07-12
Filing date: 2018-07-12
Publication date: 2019-01-17

Abstract

The invention relates to a vehicle seat with a seat adjusting mechanism (1), comprising a first horizontal pivoting axis (1.1) about which a seat back (2) can pivot with respect to a seat part (3). According to the invention, a second horizontal pivot axis (1.2) and/or a third horizontal pivot axis (1.3) about which at least one part of the seat part (3) can pivot is/are provided.

Description

VEHICLE SEAT WITH A SEAT ADJUSTMENT MECHANISM

description

The invention relates to a seat adjustment mechanism for a

Vehicle seat and a vehicle seat.

From the prior art are seat adjustment mechanisms for

Vehicle seats and vehicle seats known. With a known

Seat adjustment mechanism for a vehicle seat, the inclination of a seat back is electrically adjusted by the seat back is pivoted relative to a seat part about a first pivot axis.

The object of the present invention is to provide an improved

Seat adjustment mechanism of the type mentioned above and to provide an improved vehicle seat.

The object is achieved with a seat adjustment mechanism according to the invention for a vehicle seat.

A seat adjustment mechanism for a vehicle seat comprises a first horizontal pivot axis about which a seat back is pivotable relative to a seat part. According to the invention, a second horizontal pivot axis and / or a third horizontal pivot axis are provided, about which at least a partial region of the seat part is pivotable.

The advantages achieved with the seat adjustment mechanism according to the invention are in particular that a pivoting movement of the seat back can be done very quickly. This makes it possible, in particular the time to set up a seat back from a comfort Position, which is taken, for example, during a driving state of an autonomously driving vehicle to shorten significantly in a driving position over conventional seat adjustment mechanisms. If it requires the driving situation in autonomous moving vehicles, thereby the seat back of a driver's seat can be brought into the driving position particularly quickly, as a result of which the driver can again assume a seating position that is suitable for guiding faster. As a result, safety can be increased and a probability of an accident can be reduced.

An embodiment of the seat adjustment mechanism provides that by means of the second horizontal pivot axis, a front seat portion is pivotally connected to a rear seat portion, wherein a

Joint between a front edge of the rear

Seat portion and a rear edge of the front seat portion forms the second pivot axis. This makes it possible that when adjusting the comfort position from the driving position, the rear seat portion is pivoted forward, ie, backwards, the rear seat portion pivotally mounted by means of the first pivot axis seat back is already proportionately pivoted backwards into the comfort position.

Preferably, therefore, the front seat portion is pivotally connected to the rear seat portion such that when setting the comfort position from a driving position, the rear seat portion is given upwards, the seat back at the rear seat portion pivotally mounted by the first pivot axis already partially in the

Comfort position is pivoted to the rear. The joint between the front edge of the rear seat portion and the rear edge of the front seat portion forms the second pivot axis. A further embodiment of the seat adjustment mechanism provides that the second pivot axis due to the pivoting of the front

Seat portion region relative to the rear seat portion is raised or lowered.

Particularly preferred is the front seat portion forward so firmly that this at most longitudinally displaced and twist, but can not raise or lower. An embodiment of the seat adjustment mechanism provides that the front seat portion area is pivotally fixed front side, so that the front seat portion area during

Pivoting about the second pivot axis only on the back, but not on the front raises or lowers, so that when pivoting about the second pivot axis, the second pivot axis, but not a front edge of the front seat portion, is raised or lowered.

A further embodiment of the seat adjustment mechanism provides that by means of the third horizontal pivot axis a seat, ie the seat back and a seat part in its entirety, in its entirety about the third horizontal pivot axis is pivotally. As a result, a particularly fast pivoting movement of the seat back is made possible in a simple manner, when the seat back relative to the seat part and the seat in its entirety are pivoted simultaneously and rectified.

For this purpose, preference is given to pivoting a base unit arranged on a vehicle floor and carrying at least the seat part about the third horizontal pivot axis. The aforementioned advantage is particularly easy to achieve when the base unit is pivoted together with the seat worn by it around the third horizontal pivot axis. Alternatively, it is possible that the seat is pivoted relative to the base unit about the third horizontal pivot axis. A further embodiment of the seat adjustment mechanism provides for a simultaneous pivoting of the seat back relative to the seat part about the first horizontal pivot axis on the one hand and on the other hand of the front seat part area opposite the rear seat part area about the second horizontal pivot axis and / or the seat in its entirety about the third horizontal pivot axis.

An inventive vehicle seat has a seat adjustment mechanism according to the invention. As a result, it is possible to set the time for erecting the seat back from a comfort position, which is assumed, for example, during a driving state of an autonomously driving vehicle, to a driving position in comparison with conventional ones

Significantly shorten seat adjustment mechanisms. If it requires the driving situation in autonomously moving vehicles, thereby the seat back of the driver's seat can be brought into driving position particularly quickly, which means that the driver can again assume a suitable seating position for driving. This can increase security and one

Likelihood of an accident is reducible.

An embodiment of the vehicle seat according to the invention has a pivotability about a fourth, vertical pivot axis. The

Vehicle seat is thereby brought from a driving position to a comfort position, which is not directed in the direction of travel. In addition, the vehicle seat from this comfort position quickly and automatable back into the

Driving position rotatable. Preferably, the vehicle seat is rotatable relative to a base unit about the fourth, vertical pivot axis, alternatively, the vehicle seat is common with the base unit with respect to a

Vehicle floor about the fourth, vertical pivot axis rotatable.

Embodiments of the invention will be explained in more detail with reference to drawings. Showing: Figure 1 shows schematically a seat adjustment mechanism according to the prior art

FIG. 2 schematically shows a first embodiment of the invention in FIG

sideview

FIG. 3 schematically shows a second embodiment of the invention in FIG

Top view

FIG. 4 schematically shows a third embodiment of the invention in FIG

sideview

5a, 5b are diagrams of time-dependent pivoting angles,

FIG. 6 schematically shows a fourth embodiment of the invention in FIG

Side view in driving position and

Figure 7 schematically shows the fourth embodiment of the invention in

Side view in comfort position.

It is possible to combine the objects of FIGS. 2 to 4 and 6, 7 with one another.

Corresponding parts are the same in all figures

Provided with reference numerals.

Figure 1 shows schematically an electrically adjustable vehicle seat with a seat adjustment mechanism 1 according to the prior art, a conventional seat back 2 and a conventional seat part 3. The backrest 2 is opposite the seat part 3 adjustable in their inclination, what they to a first

Swivel axis 1 .1, which is arranged between the seat back 2 and seat part 3, is pivoted. The seat part 3 is electrically adjustable, on the one hand by means of an adjustment system V in the longitudinal direction, ie in the x-direction, and on the other hand by means of a plurality of pivoting levers 3.3 in height, ie in the z-direction. For height adjustment, the pivot lever 3.3 are pivoted relative to the seat part 3. An upper end of each

Swivel lever 3.3 is pivotally mounted on the seat part 3 and a lower end of each pivot lever 3.3 is pivotally mounted on a vehicle floor or a rail system for seat longitudinal adjustment. The pivoting of the pivot lever 3.3 is carried out by a second

Swivel axis 1 .2.

Figure 2 shows schematically as a first embodiment of the invention, an electrically adjustable vehicle seat with a seat adjustment mechanism 1 according to the invention, the seat back 2 and the seat part 3 in a comfort position. The backrest 2 is adjustable with respect to the seat part 3 in its inclination, for which they are about a first pivot axis 1 .1, the between

Seat back 2 and seat part 3 is arranged, is pivoted. The seat part 3 is electrically adjustable, on the one hand by means of a base unit 4 both in the longitudinal direction, ie in the x-direction, as well as in the height, ie in the z-direction, as well as partially in their inclination by pivoting a front seat portion 3.1 with respect to a rear seat section 3.2.

Here, the front seat portion 3.1 is pivotally connected to the rear seat portion 3.2 such that when setting a comfort position from a driving position, the rear seat portion 3.2 is given upwards, with the rear seat portion 3.2 by means of the first pivot axis 1 .1 pivotally mounted seat back 2 is already proportionally pivoted in the comfort position to the rear. The joint between the front edge of the rear seat portion 3.2 and the Rear edge of the front seat portion 3.1 forms the second pivot axis 1 .2.

To set the comfort position out of the driving position and vice versa, the inclination of the seat back 2 is particularly quickly adjustable, namely by simultaneous pivoting about the first

Swivel axis 1 .1 and about the second pivot axis 1 .2.

This is particularly advantageous because a pivoting of the seat back 2 of a driver's seat is made possible particularly quickly from the comfort position to the driving position, if, for example, a driving situation-related termination of an autonomous driving and taking over the vehicle control by a driver are required.

Alternatively or additionally, the seat back 2, seat part 3.1 and seat part 3.2 about a horizontal third pivot axis 1 .3 on the base unit 4 pivotally, whereby the pivotal movement of the seat back 2, seat part 3.1 and seat part 3.2 can also be done very quickly.

A backrest adjustment during the driving position of the vehicle seat is effected by pivoting the seat back 2 about the first pivot axis 1 .1. A comfortable seat adjustment can be achieved by pivoting the rear

Seat portion 3.2 and the front seat portion 3.1 by pivoting about the second pivot axis 1 .2 done. The setting of the

Comfort position is done by pivoting about the third pivot axis 1 .3. The particularly fast adjustment of a comfort position with far

folded seat back 2 takes place by simultaneous pivoting about the first pivot axis 1 .1 and about the third pivot axis 1 .3. By

Pivoting about the third pivot axis 1 .3, the entire vehicle seat is pivoted. A combination of adjustment in the x-direction and in the z-direction is possible within the graphically represented H-point field.

Figure 3 shows schematically a second embodiment of the invention in plan view. The seat part 3 and the seat back 2 attached thereto are optionally additionally rotatable, preferably automatically and / or electrically, about a vertical fourth pivot axis 1 .4, for example around the

To swing vehicle seat from a driving position in a comfort position and vice versa and / or for boarding and disembarking.

Figure 4 shows schematically a third embodiment of the invention, which may optionally correspond to the embodiment shown in Figure 2. The vehicle seat shown in a driving position comprises the seat adjustment mechanism 1 according to the invention, the seat back 2 and the seat part 3. In this case, the seat adjustment mechanism 1, seat back 2 and seat part 3 form a movable unit, which is arranged above the base unit 4, which serves at least the longitudinal and vertical adjustment are. The base unit 4 is fixed to the vehicle floor. The seat back 2 may be attached either to a support structure of the seat part 3 or to the base unit 4. The mode of operation of the vehicle seat corresponds to the mode of operation shown in FIG. The interface between the movable unit and the base unit may be the unit shown in FIG. 3 with the vertical pivot axis 1 .4 not shown here.

FIG. 5a shows a diagram with a time profile of a

for example, maximum pivot angle of not shown here

Seat back 2, which is adjusted solely by pivoting about the first pivot axis 1 .1 not shown here. To achieve a certain, for example, maximum, swivel angle a certain period of time is required. FIG. 5b shows a diagram with a time profile of a

for example, maximum pivot angle of not shown here

Seat back 2, by simultaneous pivoting about the first pivot axis not shown here 1 .1 and the third not shown here

Swivel axis 1 .3 is set. To achieve a certain, for example, maximum, pivot angle, a time is required which is smaller than that shown in Figure 5a.

Figure 6 shows schematically a fourth embodiment of the invention in side view in driving position. In this case, adjustments in the x-direction and in the z-direction and a tilt adjustment of the seat back 2 relative to the seat part 3 by pivoting about the first pivot axis 1 .1 are possible. A pivoting of the seat sections 3.1 and 3.2 to the second

Swivel axis 1 .2 and a pivoting of the entire vehicle seat about the third pivot axis 1 .3 does not take place here.

Figure 7 shows schematically the fourth embodiment of the invention according to Figure 6 in side view, but here in comfort position. There are adjustments in the x-direction and in the z-direction and a

Tilt adjustment of the seat back 2 relative to the seat part 3 by pivoting about the first pivot axis 1 .1 possible. Pivoting the seat sections 3.1 and 3.2 about the second pivot axis 1 .2 and pivoting of the entire vehicle seat about the third pivot axis 1 .3 is also possible here. Schematically, three different possible contours K are shown for a comfort position. LIST OF REFERENCE NUMBERS

1 seat adjustment mechanism

1 .1 first pivot axis

1 .2 second pivot axis

1 .3 third pivot axis

1 .4 fourth pivot axis

2 seat back

3 seat part

3.1 front seat area

3.2 rear seat section

3.3 Swivel lever

4 base unit

K contour for a comfort position V adjustment system

Claims

claims

1 . Seat adjustment mechanism (1) for a vehicle seat, comprising a first horizontal pivot axis (1 .1) about which a

Seat back (2) is pivotable relative to a seat part (3),

characterized in that a second horizontal

Pivot axis (1 .2) and / or a third horizontal

Pivot axis (1 .3) are provided / is about which at least a portion of the seat part (3) is pivotable.

2. seat adjustment mechanism (1) according to claim 1,

characterized in that by means of the second horizontal

Pivot axis (1 .2) a front seat portion (3.1) is pivotally connected to a rear seat portion (3.2), wherein a

Joint between a front edge of the rear

Seat section (3.2) and a rear edge of the front

Seat portion (3.1) forms the second pivot axis (1 .2).

3. seat adjustment mechanism (1) according to claim 2,

characterized in that the second pivot axis (1 .2) due to the pivoting of the front seat portion (3.1) relative to the rear seat portion (3.2) is raised or lowered.

4. seat adjustment mechanism (1) according to claim 3,

characterized in that the front seat portion (3.1) is fixed pivotally on the front side.

5. seat adjustment mechanism (1) according to one of the preceding

Claims,

characterized in that by means of the third horizontal Pivot axis (1 .3) a seat in its entirety about the third horizontal pivot axis (1 .3) is pivotable.

6. seat adjustment mechanism (1) according to claim 5,

characterized by a pivoting one at a

Vehicle floor arranged and at least the seat part (3) supporting the base unit 4 about the third horizontal pivot axis (1 .3).

7. Seat adjustment mechanism (1) according to one of the preceding

Claims,

characterized by a simultaneous pivoting of the

Seat back (2) opposite the seat part (3) around the first horizontal

Pivot axis (1 .1) on the one hand and on the other hand of the front

Seat portion (3.1) relative to the rear seat portion (3.2) about the second horizontal pivot axis (1 .2) and / or the seat in its entirety about the third horizontal pivot axis (1 .3).

8. Vehicle seat,

characterized by a seat adjustment mechanism (1) according to any one of the preceding claims.

9. Vehicle seat according to claim 8,

characterized by a pivoting about a fourth, vertical pivot axis (1 .4).