DE102007036450B3 - Vehicle seat, particularly motor vehicle seat, has moving component, which releases rails releasing device in positive manner during transfer from usage position into non usage position - Google Patents

Abstract

In a vehicle seat (1), in particular a motor vehicle seat, with at least one seat rail pair (9) by means of which the seat longitudinal position is adjustable and which can be locked by means of a rail lock (9c), at least one front foot (11) attached to the seat rail pair (9), a seat cushion (3) which is articulated at least indirectly on the pair of seat rails (9), in particular by means of at least one front rocker (13) is articulated on the front foot (11), at least one rear foot (21) detachably connectable to the seat rail pair (9) which is articulated at least indirectly to the seat rail pair (9) by means of at least one link (27, 29), in particular to the front foot (11), a back (5) articulated to the rear foot (21), the vehicle seat (1) at least from at least one suitable for passenger transport position of use in at least one non-use position can be converted, unlocked at the transition from the Use position in the non-use position of at least one of the moving components (3, 21, 27, 29) inevitably the rail release (9c).

Description

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

The second and / or third rows of multi-purpose vehicles (MPV), such as vans or MPVs, are usually designed so that the interior is adjustable to a passenger or goods transport. From the DE 10 2006 007 139 A1 For example, a vehicle seat of the aforementioned type is known, which is from a use position in a non-use position, in particular a suitable entry entry position or in a folded bottom position to increase the cargo space, can be transferred. In addition, an adjustment of the seat longitudinal position is possible in the use position. The Indian DE 699 02 629 T2 described vehicle seat has pairs of seat rails, each a firmly associated rear foot and a hinged to the rear feet backrest. This vehicle seat offers the possibility that the transition from a use position to a non-use position with the pivotal movement of the back inevitably unlocks the rail locking the seat rail pairs, so that the vehicle seat can be moved forward.

Of the Invention is based on the object, an alternative to the vehicle seat to create the type mentioned. This object is achieved by a vehicle seat with the features of claim 1 solved. Advantageous embodiments are the subject of the dependent claims.

By doing at the transition from the use position to the non-use position at least one of the moving parts inevitably the rail lock unlocked, will be ensured that the vehicle seat at the latest in the non-use position in a different seat longitudinal position can be brought. This is a maximum entry space for disposal posed. It does not have to be additional Unlocking actuated become. The rail lock is preferably by means of a movable operating lever unlocked, on the one hand part of the existing, manually operable Rail release system is on the other hand, a control arm or the like, which preferably at a at the transition moving from the use position to the non-use position Components is provided. For a defined sequence can be provided, for example, that the control arm in abutment before reaching the non-use position the operating lever comes and pans this until reaching non-use position. The for the inevitable Unlock cooperating components point for better interaction preferably various arms, for easy manufacture can be formed on the associated components.

in the The following is the invention with reference to an illustrated in the drawing Embodiment explained in more detail. It demonstrate

1 a partially sectioned side view of the embodiment in a position of use,

2 a 1 corresponding view of the embodiment in the lying position,

3 a 1 corresponding view of the embodiment in the entry position,

4 a 1 corresponding view of the embodiment in the bottom position,

5 a section through a part of the embodiment in the region of a rear foot,

6 a partial side view in the region of a rail lock in the entry position,

7 a front view of the embodiment in the position of use, and

8th a partial perspective view in the region of a rail lock.

A vehicle seat 1 for a middle or rear row seat of a motor vehicle, such as a van, has a seat cushion 3 and a backrest 5 on which by means of fittings 7 in their inclination relative to the seat cushion 3 is adjustable. In the following directions, it is assumed that the vehicle seat 1 is arranged in the forward direction of travel in the motor vehicle, wherein in a suitable for passenger transport position of use of the vehicle seat 1 the backrest 5 at the back end of the seat cushion 3 located. Under the term seat cushion 3 should be understood the entire assembly, consisting of a structure and a related upholstery. As far as components on the seat cushion 3 are hinged, this is an articulation on the structure of the seat cushion 3 to understand. The basic features of the structure of the vehicle seat 1 are already in the WO 02/22391 A1 whose disclosure content is explicitly included.

In the following, for simplicity, only the left vehicle seat side of the substantially symmetrical vehicle seat 1 described, and indeed initially in a special position of use, namely the design position in which the backrest 5 for example, tilted backwards by 23 ° relative to the vertical. At a seat rail pair connected to the structure of the motor vehicle 9 is a front foot 11 attached, in the present case firmly connected. The front foot 11 but could also be solved with the seat rail pair 9 be locked. At the front foot 11 is by means of a front swingarm 13 the seat cushion 3 hinged, this front swingarm 13 is provided at both ends with joints, one of which the articulation on the front foot 11 and the other the articulation at the front end of the seat cushion 3 forms.

The seat rail pair 9 opens up the possibility of a longitudinal adjustment of the vehicle seat 1 , The seat rail pair 9 in the present case has a first seat rail connected directly to the vehicle structure 9a and a relative to this in the longitudinal direction by sliding second seat rail 9b on. The two 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 - known per se - rail lock 9c locked together. In the second seat rail 9b is at the rear end on the top of a recess 14a provided, which together with a longitudinally arranged, repeatedly bent transversely to the longitudinal direction angle plate 14b a recording 14 in the second seat rail 9b Are defined. The angle sheet 14b can also be omitted.

Above each shot 14 is transverse to the longitudinal direction of a locking bolt 15 arranged, on each of which a respective perpendicular projecting, extending in the longitudinal direction arm is integrally formed. The seat rail pair 9 includes an adapter 17 which is above the recess 14a also has a recess. The adapter 17 takes as a retaining clip on both longitudinal sides of the respective longitudinally extending arm of the locking bolt 15 positively and is connected thereto, preferably welded. The adapter 17 is on top of the second seat rail 9b attached, preferably screwed or riveted to this.

On seat rail pair 9 is also in the direction of travel behind the front foot 11 one from the front foot 11 specially trained rear foot 21 arranged, which by means of one on the rear foot 21 attached castle 23 detachable with the seat rail pair 9 is locked, more precisely with the second seat rail 9b locked and thus indirectly connected to the vehicle structure. For this, the rear foot dives 21 (with the lock 23 ) partially in the recording 14 and locked with the locking bolt 15 ,

In addition, the rear foot 21 by means of a hindfoot four-jointed joint 26 on the front foot 11 articulated, with the four gear members of the hindfoot four-bar linkage 26 a first handlebar 27 and one in the direction behind the first handlebar 27 arranged second link 29 include each having joints at both ends. At the back foot 21 is also a first fitting part of the fitting 7 attached, while a relative to the first fitting part about the backrest pivot axis 33 swiveling and with this lockable second fitting part of the fitting 7 on the backrest 5 is attached.

A rear swingarm 35 is by means of a lower joint 37 right at the back foot 21 and by means of a - in the use position above the lower joint 37 arranged - upper joint 39 on the seat cushion 3 hinged, namely the rear end of the seat cushion 3 to. The seat rail pair 9 with the feet 11 and 21 , the two wings 13 and 35 and the seat cushion 3 define as four gear members a pillow four-bar linkage 40 , The two wings take 13 and 35 each other from the parallelism deviating orientation, which is supported by different lengths.

Between the two joints 37 and 39 is by means of a middle joint 43 a paddock 45 hinged at one end, which at its other end by means of a rear joint there 47 on the backrest 5 (or a permanently connected component, such as a fitting part of the fitting 7 , or on the connecting element of such a component with the backrest 5 ) is articulated. In the position of use, the rear joint 47 clearly above and a little behind the backrest pivot axis 33 arranged. In case of a front crash, the paddock is used 45 as a train to crash forces on the seat cushion 3 act, from - unlocked in the exemplary embodiment - pillow four-bar linkage 40 to the rear foot 21 and further into the seat rail pair 9 to lead.

The back foot 21 , the rest 5 between the backrest pivot axis 33 and the rear joint 47 , the paddock 45 and the rear swingarm 35 between the lower joint 37 and the middle joint 43 form as four gear members a coupling four-bar linkage 48 , The middle joint 43 is in the position of use a little before the line connecting the two joints 37 and 39 ie the three joints 37 . 39 and 43 define an obtuse triangle, with the obtuse angle at the middle joint 43 is arranged. This triangle forms the basic form of the rear swingarm 35 ,

When tilting the backrest 5 The fitting will be on every vehicle seat side 7 ent locks, the backrest 5 around the backrest pivot axis 33 pivoted to the desired position, and then every fitting 7 locked again. The coupling-four-joint 48 forces the rear swingarm 35 to a pivoting movement about the lower hinge 37 , so moves the pillow four-bar linkage 40 , This also changes the inclination of the seat cushion 3 something. The rest 5 can also be pivoted flat to the rear, leaving the vehicle seat 1 a recumbent occupies.

To transfer the vehicle seat 1 in a boarding position as an excellent non-use position is the castle 23 unlocked. The back foot 21 now swings by means of the hindfoot four-joint 26 ie the handlebar 27 and 29 , up. The fitting 7 always stays locked. This is the coupling 45 and consequently the rear swingarm 35 in a rigid arrangement relative to the rear foot 21 , The back foot 21 pushes therefore with the rear swingarm 35 the seat cushion 3 at the rear end up, which due to its articulation by means of the front rocker 13 pivots down at the front end, so in total, with the seat in front is upright. The with this movement to the seat cushion 3 staggered backrest 5 on the other hand, it tends slightly forward. When the entry position is reached, in which access to a rear row of seats is facilitated, locks the lock 23 or another locking device with the front foot 11 ie the back foot 21 and the front foot 11 are locked together. The return to the previously occupied position of use takes place after the release of the said interlock between the feet 11 and 21 in the reverse order of the steps described. As far as the front foot 11 detachable with the seat rail pair 9 Locked, the vehicle seat 1 in the entry position by releasing this lock from the pair of seat rails 9 disconnected and removed from the vehicle.

To transfer the vehicle seat 1 in a floor position (flat-floor position) as another excellent non-use position, in which an enlarged cargo space is available, the backrest 5 after unlocking the fitting 7 folded forward. As with the tilt adjustment forces the coupling four-bar linkage 48 the rear swingarm 35 to a pivoting movement about the lower hinge 37 and thus moves the pillow four-bar linkage 40 , The coupling-four-joint 48 , ie primarily the paddock 45 , starts by moving the rear swingarm 35 forward, the pillow four-bar linkage 40 and therefore the seat cushion 3 lower. The paddock 45 is at her rear joint 47 associated end formed curved to a cutting into the cushion area of the backrest 5 or alternatively to avoid the provision of a pad gap. With the approach to the bottom position, in which the back of the backrest 5 is at least approximately in the horizontal, is the backrest 5 on the seat cushion 3 , The securing of this folded bottom position is done by locking the fitting 7 , The return to the previously occupied position of use takes place after unlocking the fitting 7 in the reverse order of the steps described.

To another seat longitudinal position of the vehicle seat located in the position of use 1 to adjust, the rail lock must 9c (on both sides of the vehicle) to be unlocked. This is the seat cushion 3 on the front a rail release lever 81 arranged, which is spring-biased down and - for example by means of a Bowden cable - in operative connection with a first operating lever 83 stands. The rail release lever 81 and the first operating lever 83 can also be integrally formed with each other or firmly connected. The first operating lever 83 sits firmly against a rail release shaft 85 , The rail unlocking shaft 85 is perpendicular to the two seat rail pairs 9 extending between them and rotatably mounted at their two ends to the respective second seat rails 9b , preferably on the associated front foot 11 stored. In the area of each end of the rail unlocking shaft 85 is rotatably mounted on this one actuating cam 87 which is attached to an upwardly projecting spring-loaded bolt of the rail seal 9c is applied.

If the user sitting in the easily accessible to him rail release lever 81 operated, becomes the first operating lever 83 subjected to a tensile force, whereupon this the Schienenentriegelungswelle 85 rotates, which in turn on both vehicle seat sides the actuating cam 87 pivots, which then on the bolt of the rail lock 9c suppressed. The rail lock 9c unlocked by, and the vehicle seat 1 can be moved to another seat longitudinal position. Will the rail release lever 81 let go, provide the spring preloads for a return of the components in their initial position and thus for locking the rail lock 9c ,

When the vehicle seat 1 has been transferred to the entry position, it may be desirable to minimize the distance to the previously arranged row of seats, for which a front seat longitudinal position would have to be taken. After the rail release lever 81 in the entry position for the user is no longer accessible, but the rail release shaft 85 is at least one end of the rail unlocking shaft 85 , Preferably at both ends, a second operating lever 89 rotatably attached. At the second operating lever 89 is preferably a button 89a molded or attached. The user can now by pressing on the second operating lever 89 or its key 89a the rail unlocking shaft 85 Turn, with what - as previously described - the rail lock 9c unlocked and the vehicle seat 1 can be pushed into a different seat longitudinal position.

According to the invention, in addition (or as an alternative) to this user-initiated unlocking of the seat rail pairs 9 in the entry position still provided an inevitable unlocking the transition from the use position in the entry position. For this purpose (on at least one vehicle seat side) on the second operating lever 89 a forward projecting actuating arm 89b molded or attached. At the adjacent first handlebar 27 is a control arm 27a molded or attached, which over the lower pivot point of the first link 27 initially protrudes downwards. During the transition from the use position to the entry position, the first link pivots 27 to this lower pivot point forward, causing the control arm 27a swings backwards and further upwards. Before reaching the entry position, in this case about 15 ° before, comes the control arm 27a in contact with the actuating arm 89b more precisely on its underside. In the further course the control arm raises 27a the actuating arm 89b on, causing the operating lever 89 pivots and the rail release shaft 85 turns. By means of the actuating cam 87 becomes - as previously described - the rail lock 9c unlocked, and the vehicle seat 1 can be pushed into a different seat longitudinal position, in particular close to the row of seats arranged in front.

With the rail release shaft 85 and the two actuating cams 87 is already ensured that on both sides of the vehicle the respective rail lock 9c can be unlocked. Therefore, the same parts need not be provided on both vehicle seat sides. Rather, it is also possible that only on a vehicle seat side, a control arm 27a at the local first handlebar 27 and an actuating arm 89b on - possibly single - operating lever 89 are provided.

1

vehicle seat

3

seat cushions

5

rest

7

fitting

9

Pair of seat rails

9a

first seat rail

9b

second seat rail

9c

rail lock

11

front foot

13

front wing

14

admission

14a

recess

14b

Winkelblech

15

locking bolt

17

adapter

21

rear foot

23

lock

26

Hind foot-four bar

27

first handlebars

27a

control arm

29

second handlebars

33

Back pivot axis

35

rear wing

37

lower joint

39

upper joint

40

Pillow four-bar

43

middle joint

45

paddock

47

rear joint

48

Coupling four-bar

81

Schienenentriegelungshebel

83

first actuating lever

85

Schienenentriegelungswelle

87

actuating cam

89

second actuating lever

89a

button

89b

actuating arm

Claims (9)

Vehicle seat, in particular motor vehicle seat, with at least one seat rail pair ( 9 ), by means of which the seat longitudinal position is adjustable and which by means of a rail lock ( 9c ) is lockable, at least one on seat rail pair ( 9 ) attached front foot ( 11 ), a seat cushion ( 3 ), which at least indirectly on seat rail pair ( 9 ) is articulated, in particular by means of at least one front rocker ( 13 ) on the front foot ( 11 ), at least one with the seat rail pair ( 9 ) detachably connectable rear foot ( 21 ), which by means of at least one handlebar ( 27 . 29 ) at least indirectly on the seat rail pair ( 9 ), in particular on the front foot ( 11 ), one on the rear foot ( 21 ) articulated backrest ( 5 ), the vehicle seat ( 1 ) is convertible into at least one non-use position, at least of at least one use position suitable for transporting persons, characterized in that at least one of the components moving during the transition from the use position to the inoperative position ( 3 . 21 . 27 . 29 ) inevitably the rail unlocking ( 9c ) unlocked by the seat rail pair ( 9 ) a movable, in particular pivotable, operating lever ( 89 ), which at least indirectly, in particular by means of an actuating cam ( 87 ), on the rail lock ( 9c ) acting on at least one of the at the transition from the position of use in the Nichtge use position moving components ( 3 . 21 . 27 . 29 ) a control arm ( 27a ) is provided, which in its movement inevitably on the actuating lever ( 89 ) acts. Vehicle seat according to claim 1, characterized in that before reaching the non-use position of the control arm ( 27a ) in contact with the actuating lever ( 89 ), in particular an actuating arm ( 89b ) of the same, and this pivots until reaching the non-use position. Vehicle seat according to claim 2, characterized in that the actuating arm ( 89b ) on the operating lever ( 89 ) is formed protruding or attached to the front. Vehicle seat according to one of the preceding claims, characterized in that the control arm ( 27a ) on the handlebar ( 27 ) is formed or attached, in particular via the lower pivot point of the handlebar ( 27 . 29 ) projecting downwards in the position of use. Vehicle seat according to one of the preceding claims, characterized in that a rail release shaft ( 85 ) is provided, on which the actuating lever ( 89 ) is mounted rotationally fixed and which when pivoting the operating lever ( 89 ) on each vehicle seat side to the rail lock ( 9c ) of the assigned seat rail pair ( 9 ), in particular by means of one actuating cam ( 87 ). Vehicle seat according to one of the preceding claims, characterized in that the vehicle seat ( 1 ) is transferable from the use position to the non-use position by the seat rail pair ( 9 ) dissolved rear foot ( 21 ) by means of the handlebar ( 27 . 29 ) and the back ( 5 ) to the righting seat cushion ( 3 ) offset. Vehicle seat according to one of the preceding claims, characterized in that the seat rail pair ( 9 ) at least one to be connected to the vehicle structure first seat rail ( 9a ) and a relative to the first seat rail ( 9a ) displaceable in the longitudinal direction and lockable with this second seat rail ( 9b ), on which the front foot ( 11 ) and by means of which the rear foot ( 21 ) is releasably connectable. Vehicle seat according to one of the preceding claims, characterized in that at least one rear rocker ( 35 ) on the back foot ( 21 ) and on the seat cushion ( 3 ), and a coupling ( 45 ) at the rear swingarm ( 35 ) and at least indirectly on the backrest ( 5 ) is hinged, are provided. Vehicle seat according to claim 8, characterized in that during the transition from the use position to the non-use position the rear foot ( 21 ) by means of the rear rocker ( 35 ) the seat cushion ( 3 ) at the rear end pushes up, which due to its articulation by means of the front rocker ( 13 ) pivots down at the front end, so in total, with the seat in front upright.