DE102013003790B3 - Vehicle seat e.g. rear seat of motor vehicle, has coupling unit that is provided such that second seat back is taken during pivotal movement of first seat back from use position into non-use position - Google Patents

Abstract

The vehicle seat has a seat segment (14) with seat portions (11,12) that is respectively provided with a pair of seat backs (21,22) connected with a seat element (24) by using fittings (51,52).

Description

The invention relates to a vehicle seat with a seat segment, which comprises a first seat with a first backrest and a second seat with a second backrest and a seat part, wherein the first backrest connected by means of a first fitting and the second backrest means of a second fitting with the seat part and are pivotable relative to the seat part about a pivot axis.

State of the art

From the DE 10 2007 011 874 A1 is a generic vehicle seat known. The vehicle seat designed as a rear seat comprises two seat segments, one of the seat segments comprising one seat and the other seat segment comprising two seats. The two seat segments are arranged side by side and independently displaceable by means of longitudinal adjuster in the direction of travel.

At the two-seat comprehensive seating segment side by side, a first backrest and a second backrest are mounted, which are pivotable about the same pivot axis. At the one seat seating segment comprising a pivotable third backrest is mounted.

Each of the three backrests is pivotally mounted by means of two fittings on a seat part of the respective seat segment. The fittings are designed as locking fittings. By unlocking the two each associated with a backrest fittings the backrest in question about the pivot axis A relative to the seat part is pivotally.

task

The invention is based on the object to improve a vehicle seat of the type mentioned above, in particular with a simplified structure to achieve as needed a coupling of the first backrest with the second backrest.

solution

This object is achieved by a vehicle seat with the features of claim 1.

A generic vehicle seat has a seat segment, which comprises a first seat with a first backrest and a second seat with a second backrest and a seat part, wherein the first backrest by means of a first fitting and the second backrest connected by means of a second fitting with the seat part and are pivotable about a pivot axis relative to the seat part.

According to the invention a coupling unit between the first backrest and the second backrest is provided, wherein the coupling unit is configured such that upon pivotal movement of the first backrest from a use position to a non-use position the second backrest is taken, and at a pivotal movement of the second backrest from the use position in the non-use position is a freewheel to the first backrest.

If the first backrest to which a belt machine for the second backrest is attached, is pivoted to the non-use position, while the second backrest is automatically taken. This prevents the second seat from being used without a belt. However, the second seat back can be pivoted to the non-use position while the first seat remains usable.

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

According to an advantageous embodiment of the invention, the coupling unit comprises a first coupling element connected to the first backrest and a second coupling element connected to the second backrest, one of the coupling elements having at least one catching hook which forms a partial lateral embrace for a catching arm of the other coupling element. The tentacles and fishing hooks fulfill two functions. On the one hand cause the fishing hooks in cooperation with the tentacles that during a pivotal movement of the first backrest from the use position in the non-use position, the second backrest is taken, and at a pivotal movement of the second backrest from the use position in the non-use position is a freewheel to the first backrest. On the other hand, caught in the event of a crash, the fishing hooks due to the lateral embrace with the tentacles and thus prevent the coupling elements from disengaging.

Advantageously, the first backrest has a first connecting tube extending concentrically with respect to the pivot axis, and the second backrest has a second connecting tube concentric with the pivot axis, one of the connecting tubes being partially inserted into the other connecting tube. The two connecting tubes thus store each other and ensure a relatively accurate alignment of the backrests to each other.

Preferably, a rotary bearing bush is provided between the first connecting tube and the second connecting tube, which allows a pivoting movement of the connecting tubes to each other and allows axial displacement of the connecting tubes to each other for tolerance compensation.

Advantageously, a support part is arranged on the seat part, on which one of the connecting tubes is rotatably mounted. The support member prevents in the event of a crash, a shift of the connecting tube mounted thereon, and, since the two connecting tubes are pushed into one another, also a displacement of the other connecting pipe.

According to a further advantageous embodiment of the invention, the coupling unit comprises a third fitting, which is designed as a latching fitting. The third fitting is arranged between the first and the second backrest. The third fitting fulfills several functions. First, the third fitting, when it is locked, causes the second backrest to be taken along when the first backrest pivots from the use position to the non-use position. When the third fitting is unlocked allows this pivotal movement of the backrest relative to each other, so that when a pivoting movement of the second backrest from the use position to the non-use position, a freewheel to the first backrest. In addition, the third fitting in the event of a crash prevents the backrests from separating.

In this case, a first fitting part of the third fitting is connected to the first backrest and a second fitting part of the third fitting to the second backrest, wherein the two fitting parts are pivotable relative to each other when unlocked fitting.

According to an advantageous development of the invention, an unlocking unit is provided by means of which the second fitting and the third fitting can be unlocked at the same time. With a simultaneous unlocking of the second and the third fitting by means of the unlocking while the first fitting remains locked. Thus, the second backrest can be pivoted to the non-use position while the first backrest remains in the position of use.

Advantageously, a transmission unit is provided, by means of which the first fitting and the second fitting can be unlocked simultaneously. If the coupling unit comprises a third fitting, the third fitting remains locked in a simultaneous unlocking of the first and the second fitting by means of the transmission unit. With a simultaneous unlocking of the first and the second fitting, the first backrest can be pivoted into the non-use position and thereby takes the coupling unit, the second backrest in the non-use position with.

The transmission unit is designed such that when an unlocking of the first fitting of the second fitting is unlocked and remains locked at an unlocking of the second fitting of the first fitting. Thus, when unlocking the second fitting the second backrest can be pivoted into the non-use position, while the first backrest remains in the use position and when unlocking the first fitting both backrests can be pivoted.

Figures and embodiments of the invention

In the following, the invention is explained in more detail with reference to advantageous embodiments shown in the figures. However, the invention is not limited to these embodiments. Show it:

1 FIG. 2 is a perspective view of a first embodiment of a seat segment without padding. FIG.

2 : an exploded view of the seat segment 1 .

3 : a detailed view 1 .

4 : a front view of the backrests of the seat segment,

5 : a detailed view 4 .

6 : one 3 corresponding, perspective view of a modification of the first embodiment,

7 : a schematic representation of a second embodiment of a seat segment and

8th a modification of the second embodiment.

A vehicle seat is designed as a rear seat system of a motor vehicle. The vehicle seat includes a first seat segment 14 with a first seat part 24 and a non-illustrated second seat segment with a second, not shown Seat part which are independently longitudinally connected by means of longitudinal adjuster longitudinally connected to the vehicle structure of the motor vehicle.

The arrangement of the vehicle seat within the vehicle and its usual direction of travel define the directional information used below. In this case, a direction oriented perpendicular to the ground is referred to below as the vertical direction and a direction perpendicular to the vertical direction and perpendicular to the direction of travel is referred to below as the transverse direction. In the present case, the vertical direction also includes angles up to 30 ° to the vertical and in particular includes the orientation of a vehicle-mounted backrest of the vehicle seat in an upright position of use.

The first seating segment 14 is located in the direction of travel on the left side and occupies about 60% of the total width of the vehicle seat. The second seat segment is arranged in the direction of travel on the right side and occupies about 40% of said width. A first backrest 21 and a second backrest 22 are on the first seat part 24 pivotally mounted about a pivot axis A, while a third backrest, not shown, is pivotally mounted on the second seat part.

The first backrest 21 is arranged in the direction of travel on the left side and the third backrest is arranged in the direction of travel on the right side. The second backrest 22 is in the transverse direction between the first backrest 21 and the third backrest arranged. The pivot axis A extends horizontally in the transverse direction.

The first backrest 21 forms with a part of the first seat part 24 a first seat 11 , The second backrest 22 forms with a part of the first seat part 24 a second seat 12 , The third backrest forms with the second seat part a third seat, not shown. The first seat 11 and the second seat 12 are the first seating segment 14 assigned, the third seat is assigned to the second seat segment.

The first seat part 24 and the backrests 21 . 22 are provided in a conventional manner with pads. The first backrest 21 and the third seat back each occupy approximately 40% of the total width of the vehicle seat, while the second seat back 22 about 20% of said width occupies.

The first seat part 24 comprises a transversely extending parallel to the pivot axis A cross tube 16 , which is approximately over the entire width of the first seat part 24 extends.

The first backrest 21 is by means of a arranged in the direction of travel on the left side first fitting 51 with the cross tube 16 of the first seat part 24 connected. The second backrest 22 is by means of a arranged in the direction of travel on the right side second fitting 52 with the cross tube 16 of the first seat part 24 connected.

The first backrest 21 and the second backrest 22 are by means of the fittings 51 . 52 on the one hand in its inclination relative to the first seat part 24 adjustable in different positions of use and on the other hand pivotable forward in a non-use position.

The first backrest 21 has in its lower region a concentric with the pivot axis A arranged first connecting pipe 31 on, which extends in the transverse direction approximately over the entire width of the first backrest 21 extends. The second backrest 22 has in its lower region a concentric with the pivot axis A arranged second connecting pipe 32 which extends transversely across the width of the second backrest 22 out in the direction of the first backrest 21 extends.

In the present case, the inner diameter of the first connecting pipe 31 larger than the outer diameter of the second connecting pipe 32 , The second connecting pipe 32 is in the axial direction, ie in the transverse direction, in the first connecting pipe 31 partially inserted. In the radial direction is between the second connecting pipe 32 and the first connecting pipe 31 a hollow cylindrical rotary bushing 35 intended. The rotary bushing 35 allows pivotal movement of the first connecting tube 31 relative to the second connecting pipe 32 about the pivot axis A. The pivot bushing 35 further allows a slight displacement of the first connecting pipe 31 relative to the second connecting pipe 32 in the transverse direction, for example for tolerance compensation.

The fittings 51 . 52 each have one with the first seat part 24 firmly connected, that is fixed seat, first fitting part and one with the respective connecting pipe 31 . 32 the backrests 21 . 22 firmly connected, that is lean fixed, second fitting part, which are pivotable relative to each other. The two fitting parts in the present case form a disk-shaped unit in terms of construction, which are held together, for example by a Umklammerungsring.

Here are the fittings 51 . 52 each designed as a detent fitting, that is, the two fitting parts are locked together by means of movable latch. The bars are, for example, by a spring-loaded eccentric in a locked position moves. Such a fitting is for example in the DE 10 2011 010 699 A1 discloses, the related disclosure of which is expressly incorporated.

Between the first backrest 21 and the second backrest 22 is a coupling unit 60 intended. The coupling unit 60 includes one on the first connecting pipe 31 attached first coupling element 61 , one on the second connecting pipe 32 attached second coupling element 62 ,

The coupling elements 61 . 62 are designed such that the backrests 21 . 22 are coupled in a pivoting direction on driving, and in that there is a freewheel in the other direction of pivoting. Will the second backrest 22 pivoted from the upright position of use forward and down, so there is a freewheel to the first backrest 21 which can remain in the upright position of use. Will be the first backrest 21 pivoted from the upright position of use forward and down, so is the second backrest 22 taken.

To swing the second backrest 22 alone is the second fitting before 52 to open. To swing the first backrest 21 together with the second backrest 22 are the first fitting 51 and the second fitting 52 to open. For this is a transfer days 55 provided, which inside the connecting pipes 31 . 32 and is arranged concentrically about the pivot axis A.

The second coupling element 62 In the present case, it has an approximately circular disk-shaped basic body. Diametrically opposite are two tentacles 64 tangentially from the base body.

Also the first coupling element 61 In the present case, it has an approximately circular disk-shaped basic body. Diametrically opposite are two catch hooks 63 tangentially from the base body. The fishing hooks 63 are each bent at its end applied to the main body by 180 °.

Are the backrests 21 . 22 both in the upright position of use, as in 3 represented, embrace the bent ends of the fishing hooks 63 of the first coupling element 61 the tentacles 64 of the second coupling element 62 form-fitting. The bent ends of the fishing hooks 63 thus form a partial lateral grip for the tentacles 64 ,

Will the second backrest 22 pivoted from the upright position of use forward and down, so are the tentacles 64 from the bent ends of the fishing hooks 63 turned out. Will, however, the first backrest 21 pivoted from the upright position of use forward and down, so are the tentacles 64 from the bent ends of the fishing hooks 63 taken.

Each of the three seats has a three-point belt system, each three-point belt system comprises a not shown here Gurtautomaten. The belt machines of the first seat 11 and the third seat are each attached to the vehicle structure. The belt machine of the second seat 12 is at the first backrest 21 the first seat 11 attached. This is the belt machine of the second seat 12 also in the first seat segment 14 ,

In the present case is the belt machine of the second seat 12 arranged near the pivot axis A. From there, a strap, not shown here, extends to a Gurtumlenkbügel 19 , which near the pivot axis A facing away from the upper end of the first backrest 21 is arranged. The belt deflector 19 defines a belt exit point for the belt of the second seat 12 , It is also conceivable that the belt machine near the pivot axis A facing away from the upper end of the first backrest 21 is arranged and the belt exit point for the belt of the second seat 12 Are defined.

Is there an occupant in the second seat? 12 and uses the associated belt, so pulls the belt in the event of a crash on Gurtumlenkbügel 19 in the direction of travel forward and thereby causes a moment on the first backrest 21 about the pivot axis A. This moment is on the first connecting pipe 31 transfer.

The first connecting pipe 31 partially transfers the introduced torque to the first fitting 51 , The first connecting pipe 31 but also partially transfers the initiated moment via the hooks 63 of the first coupling element 61 on the tentacles 64 of the second coupling element 62 and thus on the second connecting pipe 32 the second backrest 22 , The second connecting pipe 32 transmits the torque thus introduced to the second fitting 52 ,

The fittings 51 . 52 transmit the respectively introduced moment into the cross tube 16 , and from there the moment, in this case via the longitudinal adjuster, is introduced into the vehicle structure.

In the event of a crash, if the second backrest 22 also experiences an acceleration in the direction of travel, a deformation of the coupling unit 60 take place, wherein the second connecting pipe 32 relative to the first connecting pipe 31 moves in the transverse direction. The bent ends hold the fishing hooks 63 of the first coupling element 61 the tentacles 64 of the second coupling element 62 firmly. Thus, it prevents the second connecting pipe 32 from the first connecting pipe 31 solves.

In the 6 shown modification of the first embodiment additionally has a support member 46 on. The support part 46 is with the cross tube 16 rigidly connected, in the present case welded, and extends from this vertically upward. At his the cross tube 16 opposite, upper end has the support part 46 a fork-shaped opening in which the second connecting pipe 32 is mounted loose and rotatable.

In the event of a crash prevents the support member 46 a movement of the second connecting pipe 32 in the direction of travel and down. The second connecting pipe 32 can in normal operation of the support part 46 be removed and only under crash load in contact with the support 46 reach.

According to a in 7 illustrated second embodiment comprises the coupling unit 60 , different from the first embodiment, a third fitting 53 , which is designed here as a detent fitting. Here is the first fitting part of the third fitting 53 with the first connecting pipe 31 connected, and the second fitting part of the third fitting 53 is with the second connecting pipe 32 connected.

To swing the first backrest 21 together with the second backrest 22 are the first fitting 51 and the second fitting 52 to open. For this purpose, as in the first embodiment, a transmission rod 55 provided, which inside the connecting pipes 31 . 32 and is arranged concentrically about the pivot axis A.

To swing the second backrest 22 alone are the second fitting 52 and the third fitting 53 to open. This is a Bowden cable unit 59 provided, which has a control element, not shown, by means of two Bowden cables with the second fitting 52 and with the third fitting 53 connected is.

In the 8th shown modification of the second embodiment additionally has a support member 46 on. The support part 46 is with the cross tube 16 rigidly connected, in the present case welded, and extends from this vertically upward. At his the cross tube 16 opposite, upper end has the support part 46 a fork-shaped opening in which the first connecting pipe 31 is mounted loose and rotatable.

In the event of a crash prevents the support member 46 a movement of the first connecting pipe 31 in the direction of travel. The first connecting pipe 32 can in normal operation of the support part 46 be removed and only under crash load in contact with the support 46 reach.

LIST OF REFERENCE NUMBERS

11

first seat

12

second seat

14

first seating segment

16

transverse pipe

19

Gurtumlenkbügel

21

first backrest

22

second backrest

24

first seat part

31

first connecting pipe

32

second connecting pipe

35

Rotary bushing

46

supporting part

51

first fitting

52

second fitting

53

third fitting

55

transmission Stage

59

Bowden

60

clutch unit

61

first coupling element

62

second coupling element

63

hook

64

tentacles

A

swivel axis

Claims (10)

Vehicle seat with a seat segment ( 14 ), which has a first seat ( 11 ) with a first backrest ( 21 ) and a second seat ( 12 ) with a second backrest ( 22 ) and a seat part ( 24 ), wherein the first backrest ( 21 ) by means of a first fitting ( 51 ) and the second backrest ( 22 ) by means of a second fitting ( 52 ) with the seat part ( 24 ) and relative to the seat part ( 24 ) are pivotable about a pivot axis (A), wherein a coupling unit ( 60 ) between the first backrest ( 21 ) and the second backrest ( 22 ) is provided, wherein the coupling unit ( 60 ) is designed such that during a pivoting movement of the first backrest ( 21 ) from a use position to a non-use position, the second backrest ( 22 ) is taken, and in a pivoting movement of the second Backrest ( 22 ) from the use position in the non-use position, a freewheel to the first backrest ( 21 ) consists. Vehicle seat according to claim 1, characterized in that the coupling unit ( 60 ) with the first backrest ( 21 ) connected first coupling element ( 61 ) and one with the second backrest ( 22 ) connected second coupling element ( 62 ), wherein one of the coupling elements ( 61 . 62 ) at least one catch hook ( 63 ), which has a partial lateral clasp for a tentacle ( 64 ) of the other coupling element ( 61 . 62 ). Vehicle seat according to one of the preceding claims, characterized in that the first backrest ( 21 ) a concentric to the pivot axis (A) extending first connecting tube ( 31 ) and the second backrest ( 22 ) a concentric to the pivot axis (A) extending second connecting tube ( 32 ), wherein one of the connecting pipes ( 31 . 32 ) partially into the other connecting tube ( 31 . 32 ) is inserted. Vehicle seat according to claim 3, characterized in that between the first connecting tube ( 31 ) and the second connecting tube ( 32 ) a rotary bushing ( 35 ) is provided. Vehicle seat according to one of claims 3 to 4, characterized in that on the seat part ( 24 ) a supporting part ( 46 ) is arranged, on which one of the connecting pipes ( 31 . 32 ) is rotatably mounted. Vehicle seat according to claim 1, characterized in that the coupling unit ( 60 ) a third fitting ( 53 ), which is designed as a catch fitting. Vehicle seat according to claim 6, characterized in that a first fitting part of the third fitting ( 53 ) with the first backrest ( 21 ) and a second fitting part of the third fitting ( 53 ) with the second backrest ( 22 ) connected is. Vehicle seat according to one of claims 6 to 7, characterized in that an unlocking unit is provided, by means of which the second fitting ( 52 ) and the third fitting ( 53 ) are unlocked simultaneously. Vehicle seat according to one of the preceding claims, characterized in that a transmission unit is provided, by means of which the first fitting ( 51 ) and the second fitting ( 52 ) are unlocked simultaneously. Vehicle seat according to claim 9, characterized in that the transmission unit is designed such that when unlocking the first fitting ( 51 ) the second fitting ( 52 ) is unlocked and when unlocking the second fitting ( 52 ) the first fitting ( 51 ) remains locked.

Images