WO2019201973A1

WO2019201973A1 - Vehicle seat, in particular motor vehicle seat

Info

Publication number: WO2019201973A1
Application number: PCT/EP2019/059880
Authority: WO
Inventors: Christian Wolf; Viktor Enns; Thomas Dill
Original assignee: Adient Engineering and IP GmbH
Priority date: 2018-04-20
Filing date: 2019-04-17
Publication date: 2019-10-24
Also published as: DE102018117577A1; DE102018117577B4; CN112020453A

Abstract

The invention relates to a vehicle seat (1), in particular a motor vehicle seat, which can be transferred from at least one use position suitable for passenger transport into a non-use position, said vehicle seat (1) comprising: a) a base (9), b) a foot (11) that is detachably connected to the base (9); c) a backrest (5) that is linked to the foot (11); d) a mechanical linkage (100) by means of which the foot (11) is linked at least indirectly to the base (9) and such that it moves relative to the base (9) for transferring the vehicle seat (1) from the use position into the non-use position, wherein the mechanical linkage (100) has a first lever (110) and a second lever (120), wherein the first lever (110) and the second lever (120) are linked pivotally to one another by means of a first rotary joint (I), and the first lever (110) is linked pivotally to the base (9), or to an adapter (9d) securely connected to the base (9), by means of a second rotary joint (II), and the second lever (120) is linked pivotally to the foot pedal (11) by means of a third rotary joint (III).

Description

VEHICLE SEAT, ESPECIALLY MOTOR VEHICLE SEAT

The invention relates to a vehicle seat, in particular a motor vehicle seat, which is convertible from at least one suitable position for use in a non-use position, the vehicle seat comprising a base, a foot which is releasably locked to the base, a backrest which is hinged to the foot, a Coupling gear by means of which the foot to the transition of the

Vehicle seat is hinged from the use position in the non-use position relatively movable to the base and at least indirectly on the base.

State of the art

DE 10 2008 050 468 B3 discloses a vehicle seat, which is convertible from at least one suitable for passenger transport position in a vorwenkte entry position, the vehicle seat having a base, a rocker, which is hinged to a mounted on the base front lock, a seat cushion, which is hinged to the swingarm and as a structure one

Sitzkissenträger has, a handlebar, which is hinged to the front foot, a rear foot, which is hinged to the handlebar and releasably locked to the base, and a backrest, which articulated by means of a lockable fitting about a backrest pivot axis on the rear foot and in their inclination is adjustable relative to the rear foot. The seat cushion is offset to the

Backrest pivot axis hinged to the backrest. At the transition of

Vehicle seat in the entry position unlocks the rear foot and moves away by means of the handlebar of the base. This will be the back end of the

Seat cushion and the backrest raised while the backrest

vorschwenkt. From DE 10 2006 007 139 A1 and DE 201 22 324 U1, a vehicle seat is known in each case, which is suitable for passenger transport

Use position can be converted into an entry position. The vehicle seat each includes a base, a foot which is releasably locked to the base, a backrest secured to the base by means of a lockable fitting

Lehnenschwenkachse is pivotally hinged to the foot, and a coupling mechanism, by means of which the foot to the transition of the vehicle seat of the

Use position in the non-use position is relatively movable hinged to the base and at least indirectly on the base.

task

The invention is based on the object to improve a vehicle seat of the type mentioned in that the backrest is less strongly raised at the transition of the vehicle seat in the entry position, in particular arranged around the vehicle seat in vehicles with low

Can use vehicle roofs (especially SUV Coupes). In addition, the vehicle seat should optionally be upgradable such that the vehicle seat is electrically driven from a position of use in the entry position can be transferred.

solution

This object is achieved by a vehicle seat, in particular a motor vehicle seat, which is convertible from at least one suitable position for use in a non-use position, the vehicle seat having a base, a foot which is releasably locked to the base, a backrest hinged to the foot is a coupling mechanism by means of which the foot to the transition of the vehicle seat from the position of use in the

Non-use position is relatively movable to the base and at least indirectly hinged to the base. The linkage has a first rocker and a second rocker, wherein the first rocker and the second rocker by means of a pivotally connected to each other first hinge pivotally connected to each other by means of a second pivot joint to the base or an adapter fixedly connected to the base, and the second rocker by means of a third pivot pivotally articulated to the foot.

Characterized in that the coupling gear has a first rocker and a second rocker, which are pivotally hinged to each other by means of a first pivot, wherein the first rocker is pivotally connected by means of a second pivot joint to the base or an adapter fixedly connected to the base, and the second Swing arm is pivotally hinged by means of a third pivot joint on the foot, the backrest is not or only slightly raised at the transition of the vehicle seat in the non-use position, in particular entry position. Compared to known from the prior art vehicle seats, the backrest performs during a transfer of the vehicle seat from the use position in the non-use position less movement in the vertical direction. A vehicle seat according to the invention can also be easily upholstered.

Advantageous embodiments, which can be used individually or in combination with each other, are the subject of the dependent claims.

The non-use position may be an entry position in which the foot and the backrest relative to the use position (that is, compared to the previously occupied position of use) is displaced forward. The backrest is preferably pivotably connected to the foot by means of a lockable fitting about a backrest pivot axis.

The coupling mechanism may have a coupling, which is articulated by means of the first pivot pivotally mounted on the first rocker and on the second rocker. The coupling can be articulated by means of a fourth rotary joint to a further gear member of the linkage. About the coupling can be the first rocker and the second rocker, in particular in response to the other gear member, move and thus move the foot and the backrest. The further gear member of the linkage is preferably a third

Swingarm. The third rocker may be pivotally hinged to the base by means of a fifth pivot. The third rocker can by means of a fifth

Swivel joint to be hinged to an adapter firmly connected to the base. The third rocker may be pivotally hinged to the foot by means of a sixth pivot.

Preferably, the fourth pivot is disposed between the fifth pivot and the sixth pivot. Thereby, the coupling can be arranged such that the coupling is not arranged too close to an occupant of the vehicle seat, whereby a good cushion comfort can be achieved.

The coupling mechanism is preferably a six-link chain. The six-link chain includes as gear members the first rocker, the second rocker, the third rocker, the paddock, the foot and the base. These gear members are connected to the six pivot joints in a suitable manner to a six-link chain.

In the position of use of the vehicle seat, the first rotary joint is preferably arranged above the third rotary joint. In the non-use position of the vehicle seat, the first pivot is preferably above the third

Swivel joints arranged. The first pivot is preferably located above the second pivot. As a result, a low-lying articulation of the foot is achieved. Preferably, the orientation of the second rocker in the position of use is such that the transition to the non-use position, in particular an entry position, the third pivot can be lowered by pivoting the second rocker.

In the position of use of the vehicle seat is the second pivot

preferably arranged in front of the third pivot. In the non-use position of the vehicle seat, the second rotary joint is preferably arranged behind the third rotary joint. An angle between the first rocker and the second Rocker is preferably sharper in the non-use position than in the

Use position.

The foot can be locked by means of a lock with the base or a component attached to the base. The component attached to the base may be an adapter fixedly connected to the second seat rail. The lock can be a rotary latch lock. The lock is preferably arranged between the third pivot joint and the fourth pivot joint when viewed in the direction of travel. As a result, lower forces act on the base in the event of a crash. In addition, the lock in the vehicle seat is arranged so far forward that upon pivoting back of the vehicle seat in the position of use, the lock can not come into contact with a foot of an occupant of arranged behind the vehicle seat row, so that a risk of injury is reduced.

The vehicle seat according to the invention can be manually transferred from the use position to the non-use position and back. Alternatively, the

Inventive vehicle seat by means of a drive device electrified from the use position in the non-use position and be transferred back. A suitable drive device preferably has an output pinion meshing with a toothed segment mounted or formed on one of the gear members of the linkage. As a result, the coupling gear of the vehicle seat can be electrically driven. The drive device may be arranged stationary to the base. The toothed segment may be attached to the third rocker. Alternatively, the sector gear on another of the

Be fixed gear members of the linkage. A suitable

Drive device is described for example in DE 10 2017 209 330 A1. A transfer of the vehicle seat between the use position and the non-use position in case of power failure can be achieved by the

Drive device is designed outside the self-locking. Figures and embodiments of the invention

In the following the invention is based on one shown in the figures

advantageous embodiment explained in more detail. However, the invention is not limited to this embodiment. Show it:

Fig. 1: a schematic side view of an inventive

Vehicle seat in a position of use, and

2 shows a schematic side view of partial circumferences of the vehicle seat from FIG. 1 in a non-use position, in the present case one

Entry position.

A vehicle seat 1 according to the invention shown in FIG. 1, for example as an outer seat of a middle or rear seat row of a motor vehicle,

For example, a van, is provided, has a seat part 3 and 5 backrest. The vehicle seat 1 shown schematically in Figure 1 is subsequently using three mutually perpendicular directions in space

described. A longitudinal direction x extends in a vehicle seat 1 mounted in the vehicle largely horizontally and preferably parallel to one

Vehicle longitudinal direction, which corresponds to the usual direction of travel of the vehicle. A transverse to the longitudinal direction x perpendicular transverse direction is also aligned horizontally in the vehicle and extends parallel to a

Vehicle transverse direction. A vertical direction z is perpendicular to the

Longitudinal direction x and perpendicular to the transverse direction. In a vehicle seat 1 installed in the vehicle, the vertical direction z runs parallel to the vehicle

Vehicle axis.

The position and direction information used, such as front, rear, above, above, below and below relate to a viewing direction of a seated in the vehicle seat 1 occupant in normal seating position, the vehicle seat 1 installed in the vehicle, in a suitable for passenger transport use position an upright backrest 5 and as usual in Direction is aligned. However, the vehicle seat 1 according to the invention can also be installed in a different orientation, for example transversely to the direction of travel.

In the following, for simplicity, only a vehicle seat side of the im

Essentially symmetrical vehicle seat 1, i. the components listed below are duplicated unless otherwise specified

(optionally mirror-symmetric) present. First, the vehicle seat 1 is described with reference to a specific position of use shown in FIG. 1, namely a design position, in which the backrest 5 is tilted back for example by 23 ° relative to the vertical.

A base 9 of the vehicle seat 1 is connectable to a structure of the motor vehicle. The base 9 is formed in the embodiment as a seat rail assembly, which opens up the possibility of longitudinal adjustment of the vehicle seat 1. The base 9 in this case has a direct or indirect with the

Vehicle structure connectable first seat rail 9a and a relative to this in the longitudinal direction x displaceable second seat rail 9b. The two in the

Essentially U-shaped profiled seat rails 9a and 9b engage behind each other mutually with their inwardly or outwardly bent longitudinal edges and are - by means of a not shown in the figures, but known per se rail lock - locked together. The rail lock can be unlocked by the user of the vehicle seat 1 by means of a not shown in the figures, but known per se unlocking.

At the base 9, a foot 11 is articulated by means of a linkage 100. On the foot 11, the backrest 5, in particular by means of a lockable fitting pivotable about a backrest pivot axis A, hinged. By means of the

Coupling 100 is the foot 11 and with him the backrest 5 of the

Use position in a non-use position can be transferred. The

Non-use position is present an entry position, which facilitates access to a arranged behind the vehicle seat 1 rear row of seats. Compared for use position of the foot 11 and the backrest 5 are moved forward in the entry position.

In the figure 1, the seat part 3 is sketched very simplified. The seat part 3 has a seat cushion cushion, which is for example carried by a seat shell which is fixedly connected to the foot 11. Alternatively, the seat cushion cushion or a structure carrying the seat cushion cushion can be supported by a seat cushion support which, as described for example in DE 10 2008 050 468 B3, is articulated on the backrest 5 eccentrically to the backrest pivot axis A and on the other hand by means of a seat cushion support rocker arm on the seat backrest Base is articulated. In Figures 1 and 2, the components seat cushion, seat and

Seat cushion support not shown because the type of connection of the seat part 3 is not relevant to the invention, but well enough known from the prior art.

The foot 11 is releasably locked to the base 9 by means of a lock 13 attached to the foot 11, more precisely to a base-fixed counter element, in the present case a bolt 9c fastened to the second seat rail 9b, and is thus indirectly connectable to the vehicle structure. The bolt 9c is presently attached to an adapter 9d of the second seat rail 9b. The adapter 9d can be made in one piece with the second seat rail 9b or firmly connected to the second seat rail 9b, for example, welded, be.

The bolt 9c is centered in a locked state with the lock 13 in a slot-like receiving opening of a lock housing of the lock 13 and is prevented by a pawl of the lock 13 from leaving the receiving opening. The receiving opening is open in the direction of the bolt 9c and extends substantially parallel to the longitudinal direction x. In the use position of

Vehicle seat 1 fix the receiving opening and the pawl of the lock 13 the foot 11 relative to the base 9, so that no relative movement between the foot 11 and the base 9 is possible. In an unlocked state of the lock 13, the bolt 9c can emerge from the receiving opening of the lock 13 and the foot 11 can be displaced by means of the linkage 100 such that the vehicle seat 1 can be transferred into the entry position. In a modification of the embodiment of the vehicle seat in addition to the use position and the entry position a bottom position as

Occupy non-use position, in which the backrest 5 is pivoted largely flat on the seat part 3. The seat part 3 is preferably lowered. Such a bottom position is known for example from DE 10 2008 050 468 B3.

The coupling mechanism 100 has a first rocker 110, a second rocker 120, a coupling 130 and a third rocker 140.

The first rocker 110 is pivotally connected to the second rocker 120 by means of a first pivot joint I. The first rocker 110 is pivotally connected by means of a second pivot joint II to the base 9, in the present case the adapter 9d of the second seat rail 9b. The second rocker 120 is by means of a third

Swivel joint III pivotally hinged to the foot 11. In the position of use of the vehicle seat 1 and in the entry position of the vehicle seat 1, the first rotary joint I is arranged above the third rotary joint III and the first

Swivel I arranged above the second pivot joint II. An angle W between the first rocker 110 and the second rocker 120 is in the

Entry position of the vehicle seat 1 sharper than in the position of use of the vehicle seat. 1

One end of the coupling 130 is pivotally connected to the first rocker 110 and pivotally connected to the second rocker 120 by means of the first rotary joint I. Preferably, the first hinge I has a bearing pin which rotatably connects the first rocker 110, the second rocker 120 and the coupling 130 about a common axis of rotation.

The other end of the coupling 130 is by means of a fourth pivot joint IV

pivotally connected to the third rocker 140. The third rocker 140 is pivotally connected by means of a fifth pivot joint V to a fixedly connected to the base 9 adapter 9e. By means of a sixth pivot VI is the third rocker 140 pivotally hinged to the foot 11. The fourth pivot IV is between the fifth pivot V and the sixth pivot VI

arranged.

The second rocker 120 is articulated by means of the third pivot joint III in a rear region of the foot 11. The third rocker 140 is articulated by means of the sixth pivot joint VI in a front region of the foot 11. The

Coupling 100 is due to the structure described above a

Six joint chain.

In the position of use of the vehicle seat 1, the second pivot joint II is arranged in front of the third pivot joint III. In the entry position of the vehicle seat 1, the second pivot joint II is arranged behind the third pivot joint III.

In the present embodiment, the vehicle seat 1 by means of a

Drive device 200 electrified from the use position in the

Entry level and back transferable. The only symbolically sketched in the figures drive device 200 has a drive motor and one of the

Drive motor drivable transmission with a planetary gear stage on.

The planetary gear stage includes a housing, a sun gear rotatable about a sun gear axis of rotation, and a sun gear rotatable about the sun gear axis of rotation

Planet carrier, at least one rotatably mounted on the planet carrier about a Planetenrad- axis of rotation mounted planetary gear, which is in mesh with the sun gear, a rotatable about the sun gear rotation axis Flohlrad, which is in mesh with the at least one planet gear, and a switching device, wherein in a first switching state of the switching device, a rotation of the planet carrier is locked relative to the housing, and in a second switching state of

Switching device is locked rotation of the Flohlrades relative to the housing. Such a drive device 200 is described for example in DE 10 2017 209 330 A1. In the first switching state of the switching device, the lock 13 is unlocked upon actuation of the motor. Once the lock 13 is unlocked, the

Switching device in the second switching state. In the second switching state of the switching device upon actuation of the motor, the third rocker 140

driven and thereby transferred the vehicle seat 1 of the use position in the entry position. For this purpose, the drive device 200 has a pinion connected to the planet carrier, which meshes with a toothed segment, not shown in the figures, of the third rocker 140.

The drive device 200 may, in modifications of the embodiment instead of the third rocker 140 drive another gear member of the linkage 100. For transferring the vehicle seat 1 from the position of use shown in FIG. 1 into the entry position shown in FIG

Excellent non-use position is thus unlocked by means of the drive means 200, first the lock 13 and then taken the entry position.

If the entry position is reached, in which the access to a rear row of seats is facilitated, optionally the lock 13 or another

Locking device the foot 11 with the base 9, in particular the second seat rail 9b of the base 9, lock. A return from the entry position into the position of use takes place in the reverse order of the steps described, in this case under a reversal of the direction of the engine

Drive device 200.

The vehicle seat 1 can optionally be configured such that, upon a transition from the use position into the access position, the locking of the seat rails 9a and 9b is positively controlled unlocked, so that the second seat rail 9b is displaced forward, which is the space behind the vehicle seat 1, ie the entry level, enlarged and the access additionally facilitated. The features disclosed in the foregoing description, claims and figures may be significant to the realization of the invention in its various forms both individually and in combination. Although the invention has been described in detail in the figures and the foregoing description, the illustrations are to be considered as illustrative and exemplary and not restrictive. In particular, the choice of drawing

not to be interpreted as required or restrictive proportions of the individual elements shown. Furthermore, the invention is not limited in particular to the illustrated embodiment. Other variants of the invention and their execution will become apparent to those skilled in the art from the foregoing disclosure, the drawings and the claims.

Terms used in the claims, such as "comprising,""having,""including,""containing," and the like, do not exclude other elements or steps. The use of the indefinite article does not exclude a majority. A single device can perform the functions of several units or devices mentioned in the claims.

LIST OF REFERENCE NUMBERS

I vehicle seat

3 seat part

5 backrest

9 base

9a first seat rail

9b second seat rail

9c bolt

9d adapter

9e adapter

I'm walking

13 castle

100 coupling gear

110 first swingarm

120 second swingarm

130 paddock

140 third swingarm

200 drive device

A backrest pivot axle

W angle

x longitudinal direction

z vertical direction

I first swivel

II second pivot

111 third pivot

IV fourth pivot

V fifth pivot

VI sixth rotary joint

Claims

claims

1. Vehicle seat (1), in particular motor vehicle seat, of at least one suitable for the transport of persons use position in a

Non-use position can be transferred, the vehicle seat (1) comprising a) a base (9),

b) a foot (11) which is releasably locked to the base (9),

c) a backrest (5) which is articulated on the foot (11),

d) a coupling mechanism (100) by means of which the foot (11) is articulated to the transition of the vehicle seat (1) from the use position in the non-use position relatively movable to the base (9) and at least indirectly to the base (9)

characterized in that

the coupling gear (100) has a first rocker (110) and a second rocker (120), wherein the first rocker (110) and the second rocker (120) are pivotally hinged to each other by means of a first rotary joint (I), and the first rocker (110) by means of a second rotary joint (II)

pivotably articulated to the base (9) or to an adapter (9d) fixedly connected to the base (9), and the second rocker (120) being pivotally connected to the foot (11) by means of a third pivot (III).

2. Vehicle seat (1) according to claim 1, characterized in that the

Non-use position is an entry position, in which the foot (11) and the backrest (5) relative to the position of use is displaced forward.

3. Vehicle seat (1) according to claim 1 or 2, characterized in that the backrest (5) by means of a lockable fitting around a

Backrest pivot axis is pivotally hinged to the foot (11).

4. Vehicle seat (1) according to one of the preceding claims, characterized in that the coupling gear (100) has a coupling (130), wherein the coupling (130) by means of the first pivot joint (I) pivotally mounted on the first rocker (110) and pivotally connected to the second rocker (120) is articulated, and by means of a fourth pivot joint (IV) pivotally connected to another gear member of the linkage (100) is articulated.

5. Vehicle seat (1) according to claim 4, characterized in that the further gear member of the linkage (100) is a third rocker (140) by means of a fifth pivot (V) pivotally mounted on the base (9) or at one with the Base (9) fixedly connected adapter (9 e) is articulated and by means of a sixth pivot joint (VI) pivotally articulated to the foot (11).

6. Vehicle seat (1) according to claim 5, characterized in that the fourth pivot joint (IV) between the fifth pivot joint (V) and the sixth pivot joint (VI) is arranged.

7. Vehicle seat (1) according to one of the preceding claims, characterized

characterized in that the coupling gear (100) is a six-link chain.

8. Vehicle seat (1) according to any one of the preceding claims, characterized

in that, in the position of use of the vehicle seat (1), the first rotary joint (I) is arranged above the third rotary joint (III).

9. Vehicle seat (1) according to any one of the preceding claims, characterized

in that, in the position of use of the vehicle seat (1), the first rotary joint (I) is arranged above the second rotary joint (II).

10. Vehicle seat (1) according to claim 8 or 9, characterized in that in the non-use position of the vehicle seat (1), the first rotary joint (I) above the third rotary joint (III) is arranged.

11. Vehicle seat (1) according to any one of the preceding claims, characterized in that in the position of use of the vehicle seat (1), the second rotary joint (II) in front of the third rotary joint (III) is arranged.

12. Vehicle seat (1) according to any one of the preceding claims, characterized

in that, in the non-use position of the vehicle seat (1), the second rotary joint (II) is arranged behind the third rotary joint (III).

13. Vehicle seat (1) according to one of the preceding claims, characterized

characterized in that an angle (W) between the first rocker (110) and the second rocker (120) in the non-use position is sharper than in the position of use.

14. Vehicle seat (1) according to one of the preceding claims, characterized

in that the foot (11) can be locked by means of a lock (13) to the base (9) or to a component fastened to the base (9).

15. Vehicle seat (1) according to claim 14, characterized in that the lock (13) viewed in the direction of travel (x) between the third pivot joint (III) and the fourth pivot joint (IV) is articulated.