DE102005022984B4 - Vehicle seat, in particular motor vehicle seat - Google Patents

Abstract

Vehicle seat, in particular a motor vehicle seat, with a) at least one front foot (11), b) a seat cushion (3) hinged to the front foot (11), c) at least one rear cushion hinged to the front foot (11) and releasably connected to the vehicle structure Foot (21), d) of a backrest (5) pivotably attached to the rear foot (21), the seat cushion (3) being lowered and the backrest (5) being lowered when the vehicle seat (1) changes from a seated use position to a flat floor position. is pivoted onto the seat cushion (3) and when the vehicle seat (1) changes from the use position into a folded package position, the seat cushion (3) swings up and the backrest (5) to the sitar (13) with which the front foot (11) and / or the rear foot (21) is detachably connected and which has two seat rails (13a, 13b) which can be displaced in relation to one another in the longitudinal direction and which can be locked together by means of a rail lock (13c), the seat longitudinal position n of ...

Description

The invention relates to a vehicle seat, in particular a motor vehicle seat, with at least one front foot, an articulated at the front foot seat cushions, at least one hinged at the front foot, releasably connected to the vehicle structure rear foot and a back foot pivotally mounted back, wherein lowered at a transition of the vehicle seat from a einitzbaren use position in a flat bottom position, the seat cushion and the backrest is pivoted to the seat cushion and at a transition of the vehicle seat from the use position in a folded package position, the seat cushions and the backrest is displaced to the seat cushion, and wherein the seat longitudinal position of the vehicle seat is adjustable.

From the WO 02/22391 A1 is a vehicle seat of the type mentioned above. The seat cushion is articulated on both sides of the vehicle by means of a first four-bar linkage to a respective front foot, while each rear foot is detachably connected to the vehicle structure and articulated by means of a second four-bar linkage on the front foot. The back is hinged by means of fittings on the two rear feet. In a transition of the vehicle seat from a einitzbaren use position in a flat bottom position, the seat cushion is lowered by means of the first four-bar linkage and pivoted the backrest on the seat cushion. In a transition of the vehicle seat from the use position into a folded package position, the seat cushion is swung up and the back offset by means of the second four-bar linkage to the seat cushion, a coupling between the seat cushion and backrest couples the respective movements. The vehicle seat can be connected to the vehicle structure in various seat longitudinal positions and can optionally be removed completely by detaching all feet and providing various attachment options to the vehicle structure, for example within a rail into which the feet partially submerge, or sliding seat rails of known design for connecting the rail Serve feet.

The DE 102 07 179 C1 shows a longitudinally adjustable by means of seat rails vehicle seat, which is firmly connected to its seat rails. In the WO 01/19640 A2 discloses a vehicle seat with seat rails, wherein the front foot lockable with the associated seat rail and the rear foot is firmly connected to the seat rail.

The invention is based on the object to improve a vehicle seat of the type mentioned in such a way that the package is even more space-saving. This object is achieved by a vehicle seat with the features of claim 1. Advantageous embodiments are the subject of the dependent claims.

Characterized in that the front foot and the rear foot are detachably connected to a pair of seat rails, which has two relatively longitudinally displaceable seat rails, which are locked together by means of a rail lock, the seat longitudinal position can be finely stepped, possibly almost infinitely adjusted. It can be used conventional pairs of seat rails, in which, for example, the two substantially U-shaped profiled seat rails with their inwardly or outwardly bent longitudinal edges mutually engage behind each other. By using such series products, the manufacturing cost of the vehicle seat can be reduced.

The seat rail pairs with the two relative to each other in the longitudinal direction and verchieblichen by means of the rail lock lockable seat rails can also be connected to the feet of any other seating system. The feet do not all need solvable, d. H. detachable to the user, can be connected to the seat rail pairs, but it is also conceivable that the front (or the rear) foot firmly connected to the seat rail pair, for example, screwed is.

To connect the feet to these conventional pairs of seat rails, a receptacle is formed in the second seat rail, which is not connected to the vehicle structure, into which the assigned foot is partially immersed. The receptacle can be formed in a structurally simple manner by a recess in the upper side of the second seat rail as the opening of the receptacle and an angle disposed within the second seat rail angle plate, which forms the walls of the receptacle together with the side walls of the second seat rail. Further, preferably at each receptacle, preferably above the same, a locking bolt is provided, with which a lock or other locking mechanism of the associated foot can be locked. The locking bolt is preferably connected to the second seat rail by having a longitudinally extending arm which is connected to a retaining clip, which in turn is attached to the second seat rail and allows access to the receptacle by means of a recess. The locking bolt can be arranged very low, so that the rail height remains low. To avoid noise, a rubber pad may be provided in the receptacle or other suitable location.

The retaining clip may have an additional Verklammerungsmöglichkeit with the first seat rail or a firmly connected to the first seat rail component which is effective in the event of a crash.

In general, a front foot, a rear foot and a seat rail pair are provided on each vehicle seat side. In addition, the seat cushion is usually articulated on each vehicle seat side by means of a first four-bar link and / or the rear foot by means of a second four-bar linkage on the front foot.

The packing order is created very space-saving. Due to the length adjustment provided for comfort purposes, however, it may happen in the rear seat longitudinal positions that a gap is formed in the package position to the next preceding row of seats. Because the rail lock can be unlocked in the position of use by means of a first actuating lever and in the package position by means of a second operating lever, the longitudinal adjustment can be made to eliminate the gap even in the package.

While a rail release lever, which is arranged on the front of the seat cushion for better accessibility for the user, is in operative connection with the first operating lever, the second operating lever is arranged in the package position easily accessible, preferably in the vicinity of the rail lock. For ease of use, a button can be molded or attached to the second operating lever. Preferably, both operating levers are rotationally fixed on a common rail unlocking shaft, which unlocks the rail lock by means of one actuating cam for each seat rail pair provided, which keeps the number of additional components for the second unlocking possibility of the seat rail pairs low.

The rear foot preferably has a rear lock, by means of which it is locked with the locking bolt of the seat rail pair. In one embodiment of the vehicle seat without longitudinal adjustment of the rear foot is directly with the vehicle structure, such as a bolt mounted in the vehicle floor, locked. To unlock the rear lock, a pivotable Fußentriegelungshebel is preferably provided, which is in operative connection with a lock release lever of the rear lock. By such arrangements, the usually existing spatial distance between the operable to unlock control element and the lock can be bridged.

Preferably, the Fußentriegelungshebel is designed as a two-armed lever, which in addition to a force acting on the lock release lever actuating arm still has a Abfragearm. This interrogation arm can interrogate the position of a blocking angle, which is provided for example in the region of the rear end of a seat cushion carrier of the seat cushion. In the position of use of the vehicle seat, the locking angle is spaced from the interrogation arm, allowing unhindered unlocking of the rear lock. In the bottom position of the locking angle is preferably at least approximately on the Abfragearm, which prevents actuation of the Fußentriegelungshebels. This prevents an abusive removal of the vehicle seat in the bottom position and damage to the vehicle seat.

In the following the invention with reference to an embodiment shown in the drawing with a modification is explained in more detail. Show it

1 a perspective view of the structure of the embodiment in the position of use,

2 a side view of the embodiment in the position of use,

3 a side view of the embodiment in the bottom position,

4 a side view of the embodiment in the package,

5 a perspective view of a seat rail pair of the embodiment,

6 a section along the line VI-VI in 5 .

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

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

9 a partial view on the inside in the region of a rear foot in the position of use, and

10 a 9 according to partial view in the bottom position.

A vehicle seat 1 for a rear row of seats of a motor vehicle, such as a van, has as components a seat cushion 3 and a backrest 5 on. The arrangement of the vehicle seat 1 within the motor vehicle and its usual direction of travel define the following used directions. The vehicle seat 1 can be transferred from a einsitzbaren, ie suitable for passenger transport position of use in an upright folded package by the backrest 5 offset forward and at the same time the seat cushion 3 is folded up. The vehicle seat 1 can also be transferred from the use position in a flat bottom position by the backrest 5 folded forward and at the same time the seat cushion 3 is lowered.

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. The seat cushion 3 has a seat cushion carrier 9 on, which in its front end region on both sides of the substantially symmetrical vehicle seat 1 by means of a first four-joint 10 on a front foot 11 is articulated. Every first four-bar joint 10 is by a front lowering rocker 10a , a rear lowering swingarm 10b and the material parts between their articulation points on the seat cushion carrier 9 and on the front foot 11 Are defined. The pivot axes of the gear members of the first two four-bar linkages 10 aligned with each other. To increase the stability, the two front lowering rockers 10a with each other and the two rear lowering wings 10b preferably mutually connected by a respective cross-beam. In the following, for the sake of simplicity, only the left side of the vehicle seat will be described, initially in the position of use.

Every front foot 11 is releasable for the user with a längseinstellbaren seat rail pair 13 connected, which from a directly connected to the vehicle structure first seat rail 13a and a second seat rail 13b displaceable relative thereto in a longitudinal direction, wherein the two substantially U-shaped profiled seat rails 13a and 13b with their inwardly or outwardly bent longitudinal edges mutually engage behind each other and by means of a rail lock 13c lockable with each other. In the second seat rail 13b is at the front and at the rear end on the top in each case a recess 14a provided, which together with a longitudinally arranged, repeatedly bent transversely to the longitudinal direction angle plate 14b a recording 14 Are defined.

Above each shot 14 is transverse to the longitudinal direction of a locking bolt 15 arranged on which a right angle projecting, extending in the longitudinal arm is formed. A retaining clip 17 , which above the recess 14a also has a recess, takes on a longitudinal side of the extending arm in the longitudinal direction of the locking bolt 15 positively and is connected to this, preferably welded. The retaining clip 17 is on top of the second seat rail 13b attached, preferably screwed to this. One on the front foot 11 firmly attached front lock 19 partially dives into the recording 14 one and is with the front of the two locking bolts 15 locked, causing the front foot 11 with the second seat rail 13b locked and thus indirectly connected to the vehicle structure.

A back foot 21 is with the rear of the two locking bolts 15 by means of a rear lock 25 in the lower part of the back foot 21 releasably locked, with the rear foot 21 with the rear lock 25 partially in the assigned recording 14 dips. At the upper back of the back foot 21 is by means of a fitting 27 , preferably a tilt-adjustable detent fitting, the backrest 5 each mounted on one side. The back foot 21 is in its front part by means of a second four-bar linkage 30 on the front foot 11 hinged. The second four-bar joint 30 is by a front package swingarm 30a , a rear package swingarm 30b and the parts of material between their articulation points on the rear foot 21 and on the front foot 11 Are defined. The rear package swingarm 30b has near its upper end a rearwardly projecting, molded arm 33 on. The pivot axes of the gear members of the two second four-bar linkages 30 on the two sides of the vehicle are aligned. To increase the stability are the two rear feet 21 preferably mutually connected by a cross-beam with each other.

A movement paddock 31 , which is preferably L-shaped or arcuate, is at one end to the backrest 5 and at the other end on the seat cushion carrier 9 hinged. A gas spring 41 is on the one hand on the front foot 11 and on the other hand on the front lowering rocker 10a (or the seat cushion carrier 9 ) hinged. A tension spring 42 is on the one hand on the back foot 21 and on the other hand on the arm 33 the rear package swingarm 30b hooked.

For the transition to the package order is by means of a control element 43 the castle 25 opened and thus the rear foot 21 unlocked. The operating element 43 can be a pivoting lever on the backrest 5 or at the back foot 21 as shown in the drawing, and / or a loop on the back foot 21 be. The transition to the package is done by pressure from the back of the backrest 5 and is supported by the gas spring 41 , which the seat cushion carrier 9 pushes upwards, and the tension spring 42 which the rear foot 21 to the rear package swingarm 30b draws. The seat cushion 3 performs a pivoting movement upwards, due to the articulation by means of the first four joint 10 only instantaneous poles are defined and no fixed axis of rotation. The back foot 21 performs an offset movement, which is a superposition of pivoting movements of the package swing 30a and 30b relative to the front foot 11 and the back foot 21 relative to the package swing 30a and 30b represents. Due to the offset movement of the rear foot 21 is also the backrest 5 offset to the front, with the backrest 5 leaning slightly forward. The motion paddock 31 which is usually pressure from the backrest 5 on the seat cushion 3 transfers, couples the movements of the seat cushion 3 and the backrest 5 and allows one-handed operation.

At the front foot 11 is opposite the articulation points of the lowering swingarms 10a and 10b slightly offset to the rear a safety pin 45 provided by the front foot 11 protrudes laterally outward. The package is reached when the rear foot 21 on the safety bolt 45 sits up and the castle 25 automatically with the safety pin 45 locked, ie the rear foot 21 with the front foot 11 is locked. The package is thereby automatically secured, which increases the protection against cargo. The rest 5 is behind the seat cushion 3 arranged and has with its front to the bottom of the seat cushion 3 ie the seat cushion carrier 9 ,

To the vehicle seat 1 If necessary, as a whole can be seen from the motor vehicle, in the package order on each vehicle seat side, preferably by a common Entriegelungsbügel, the front lock 19 be unlocked, bringing the front foot 11 from the second seat rail 13b solves. Will the vehicle seat 1 reinstalled, locks the front lock on both sides of the vehicle 19 in the assigned recording 14 with the associated locking bolt 15 , The securing of the package order is independent of this.

To swing back into the position of use is by the control 43 the automatic package lock unlocks, ie the rear lock 25 disengages from the safety pin 45 , By pressure on the seat cushion 3 or pull on the backrest 5 At the same time, the seat cushions become to the rear 3 folded down and the backrest 5 moved backwards. When reaching the position of use locks the rear lock 25 again with the rear locking bolt 15 ,

To transition to the bottom position by means of another control element or a further operating, z. B. opposite pivoting direction, the aforementioned control element 43 the fittings 27 unlocked, ie the backrest 5 unlocked. While at a tilt adjustment only small changes in angle of the backrest 5 will now be the backrest 5 pivoted forward in an approximately horizontal, flat position. By means of the motion paddock 31 she pulls it by means of the first four-bar linkage 10 hinged seat cushions 3 downwards (or in a modified version towards the front below), ie the seat cushion 3 is lowered. The rest 5 Can so without cushioning on the seat cushion 3 put, ie with its front on the top. The bottom position can be achieved by locking the fittings 27 be secured. The return to the use position takes place 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 13c be unlocked. This is the seat cushion 3 on the front a rail release lever 81 arranged, which is spring-biased and - for example by means of a Bowden cable - in operative connection with a first operating lever 83 stands. 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 13 extending between them and rotatably mounted at their two ends to the respective second seat rails 13b 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 13c 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 which in turn turns the actuating cam 87 pivots, which then on the bolt of the rail lock 13c suppressed. The rail lock 13c 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 13c ,

When the vehicle seat 1 has been converted into the package, it may be desirable to minimize the distance to the row of seats arranged in front, for which the foremost seat longitudinal position would have to be taken. After the rail release lever 81 in the package order is no longer accessible to the user, 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 13c unlocked and the vehicle seat 1 can be pushed into a different seat longitudinal position.

The back lock 25 is at the transition of the vehicle seat 1 in the package order and the optional removal of the vehicle seat 1 to unlock. This is a Fußentriegelungswelle 91 provided, which is perpendicular to the two rear feet 21 extending between them and rotatable at their two ends on the respective rear foot 21 is stored. The operating element 43 is in operative connection with the Fußentriegelungswelle 91 , In the area of every back foot 21 on the inside sits a two-armed Fußentriegelungshebel 93 rotatably on the Fußentriegelungswelle 91 , On an actuating arm 95 of the foot release lever 93 is a handlebar 97 lowered, which in turn on a lock release lever 99 of the respective rear lock 25 is lowered. Will the Fußentriegelungswelle 91 turned, swing the actuator arm 95 and the handlebars 97 so that the lock release lever 99 the back lock 25 unlocked.

To a removal of the vehicle seat 1 to prevent, when this is in the bottom position, the Fußentriegelungshebel 93 next to the operating arm 95 another query arm 101 which is L-shaped and of the Fußentriegelungswelle 91 from first up and then forward. At the seat cushion carrier 9 is in the area of its rear end on the inside of a locking angle 103 mounted, which with a leg horizontally from the seat cushion carrier 9 projects. In the use position is the locking angle 103 from the query arm 101 spaced, more specifically arranged in front of and above it. When transitioning to the bottom position when the seat cushion 3 is lowered and moves backwards, the locking angle approaches 103 the query arm 101 until he finally slides under them. The query arm 101 is now - at least approximately - at the locking angle 103 at. When the foot release shaft 91 a torque is detected, a rotation of the Fußentriegelungswelle 91 and thus an actuation of the Fußentriegelungshebels 93 prevented. The back locks 25 stay locked.

LIST OF REFERENCE NUMBERS

1

vehicle seat

3

seat cushions

5

rest

9

Seat cushion support

10

first four-bar joint

10a

front lowering swingarm

10b

rear lowering swingarm

11

front foot

13

Pair of seat rails

13a

first seat rail

13b

second seat rail

13c

rail lock

14

admission

14a

recess

14b

Winkelblech

15

locking bolt

17

retaining clip

19

front castle

21

back foot

25

rear castle

27

fitting

30

second four-bar joint

30a

front package swingarm

30b

rear package swingarm

31

Motion coupling

33

poor

41

gas spring

42

mainspring

43

operating element

45

safety bolt

81

Schienenentriegelungshebel

83

first operating lever

85

Schienenentriegelungswelle

87

actuating cam

89

second operating lever

89a

button

91

Fußentriegelungswelle

93

Fußentriegelungshebel

95

actuating arm

97

handlebars

99

Schlossentriegelungshebel

101

Abfragearm

103

blocking angle

Claims (12)

Vehicle seat, in particular motor vehicle seat, with a) at least one front foot ( 11 ), b) one on the front foot ( 11 ) articulated seat cushion ( 3 ), c) at least one on the front foot ( 11 ) hingedly, releasably connected to the vehicle structure rear foot ( 21 ), d) one on the back foot ( 21 ) pivotally mounted backrest ( 5 ), wherein at a transition of the vehicle seat ( 1 ) from a einitzbaren use position in a flat ground position, the seat cushion ( 3 ) lowered and the backrest ( 5 ) on the seat cushion ( 3 ) is pivoted and at a transition of the vehicle seat ( 1 ) from the use position into a folded package position the seat cushion ( 3 ) and the back ( 5 ) to the seat cushion ( 3 ), e) a seat rail pair ( 13 ), with which the front foot ( 11 ) and / or the rear foot ( 21 ) are detachably connected and which two seat rails displaceable relative to one another in the longitudinal direction ( 13a . 13b ), which by means of a rail lock ( 13c ) are lockable with each other, wherein the seat longitudinal position of the vehicle seat ( 1 ) is adjustable, and wherein a first seat rail ( 13a ) is to be connected to the vehicle structure and a second seat rail ( 13b ) one recording each ( 14 ) for the detachably connectable feet ( 11 . 21 ) into which the associated foot ( 11 . 21 ) partially immersed, f) a first operating lever ( 83 ), by means of which the rail lock ( 13c ) is unlockable in the use position, and g) a second operating lever ( 89 ), by means of which the rail lock ( 13c ) can be unlocked in the package. Vehicle seat according to claim 1, characterized in that the two substantially U-shaped profiled seat rails ( 13a . 13b ) engage one another alternately with their longitudinal edges bent inwards or outwards. Vehicle seat according to claim 1 or 2, characterized in that a recess ( 14a ) in the top of the second seat rail ( 13b ) and one within the second seat rail ( 13b ) arranged angle plate ( 14b ) the recording ( 14 ) define. Vehicle seat according to one of claims 1 to 3, characterized in that on the second seat rail ( 13b ) for each foot to be detachably connected ( 11 . 21 ) a locking bolt ( 15 ) is provided, with which a lock ( 19 . 25 ) of the associated foot ( 11 . 21 ) is lockable. Vehicle seat according to claim 4, characterized in that the locking bolt ( 15 ) has a longitudinally extending arm, which with a retaining clip ( 17 ) connected to the second seat rail ( 13b ) is attached. Vehicle seat according to one of the preceding claims, characterized in that one on the front of the seat cushion ( 3 ) arranged rail release lever ( 81 ) in operative connection with the first operating lever ( 83 ) stands. Vehicle seat according to one of the preceding claims, characterized in that on the second actuating lever ( 89 ) a button ( 89a ) is molded or attached. Vehicle seat according to one of the preceding claims, characterized in that the two actuating levers ( 83 . 89 ) rotatably on a common rail release shaft ( 85 ), which by means of a respective actuating cam ( 87 ) for each seat rail pair ( 13 ) whose rail lock ( 13c ) unlocked. Vehicle seat according to one of the preceding claims, characterized in that for unlocking a rear lock ( 25 ) on the back foot ( 21 ) a pivotable foot release lever ( 93 ) which is operatively connected to a lock release lever ( 99 ) of the rear lock ( 25 ) stands. Vehicle seat according to claim 9, characterized in that the Fußentriegelungshebel ( 93 ) is designed as a two-armed lever, which next to a on the lock release lever ( 99 ) acting actuator arm ( 95 ) a query arm ( 101 ) having. Vehicle seat according to one of the preceding claims, characterized in that the seat cushion ( 3 ) a seat cushion carrier ( 9 ), at which in the region of its rear end a blocking angle ( 103 ) is provided. Vehicle seat according to claim 10 and 11, characterized in that in the position of use the locking angle ( 103 ) from the query arm ( 101 ) is spaced, and in the bottom position of the locking angle ( 103 ) at least approximately at the interrogation arm ( 101 ) and actuation of the Fußentriegelungshebels ( 93 ) prevented.

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