DE102010022627B4 - Vehicle seat, in particular vehicle seat - Google Patents

Abstract

Vehicle seat (1), in particular motor vehicle seat, with a first assembly, a second assembly movable relative to it and an adjustment module (10), by means of which the second assembly is releasably connected to the first assembly in various positions of use, the adjustment module (10) being a carrier (11), which is attached to the first assembly, and a transporter (12), which is movable to move the second assembly relative to the carrier (11) and can be connected to the second assembly, the first assembly being a vehicle structure ( S) and a backrest (4), which is pivotable about a backrest pivot axis (A) relative to the vehicle structure (S), is provided as the second assembly, the carrier (11) being constructed in several parts and a first adapter plate (11a), which the Vehicle structure (S) facing, and a second adapter plate (11b), which faces a lock (13), the second adapter plate (11b) a gate (1st 7) through which a counter element (14) attached to the transporter (12) protrudes, the first adapter plate (11a) and the second adapter plate (11b) being firmly connected to one another and receiving the transporter (12) between them, the adjustment module (10) has a lock which is attached to the carrier (11) and has a locking member (25), characterized in that the locking member (25) meshes with a toothing (18) of the transporter (12) by means of a pinion (27) , wherein an electrically releasable lock (20) or a manually releasable lock (20 ') or a motorized drive (20 ") can be selected as the lock, and the fastening of the lock on the carrier (11) and the pinion (27) as interfaces the lock to the carrier (11) and to the transporter (12) are the same for all intended designs of the lock.

Description

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

Such a vehicle seat is from DE 199 26 839 C1 famous.

A vehicle seat is known from use, the pivotable backrest of which can be locked to the vehicle structure in various positions of use. The inclination is adjusted, for example, by unlocking the backrest, pivoting and locking it in another position of use. The inclination of the backrest could also be adjusted manually using a handwheel, but space must be available for this. A vehicle seat is from the DE 10 2005 004 747 A1 known, the adjustment module has a (self-locking) spindle drive, which is mounted on the carrier of the first assembly (namely the vehicle structure) and is provided for moving and locking a transporter, the transporter having a lock that is connected to a counter element on the second assembly serving backrest is lockable. With the movement of the transporter, a motorized adjustment of the inclination of the backrest takes place, which, however, means additional weight compared to the manual adjustment. the EP 1 055 551 A1 shows a similar lock, wherein the counter element is provided on the transporter and the lock is provided on the backrest serving as a second assembly.

The invention is based on the object of improving a vehicle seat of the type mentioned at the beginning. According to the invention, this object is achieved by a vehicle seat having the features of claim 1. Advantageous refinements are the subject of the subclaims.

The vehicle structure can serve as the first assembly, for example, and the backrest of the vehicle seat (which can be pivoted about a backrest pivot axis relative to the vehicle structure) as the second assembly. The two assemblies can also be the superstructure and the substructure of a height-adjustable seat part.

Corresponding to its two functions of adjusting (the backrest) and locking, the adjustment module has several parts, namely the carrier, the transporter that can be moved relative to the carrier and the locking with its counter element. The counter element is preferably provided on the transporter. The assignment of the assemblies to the backrest and vehicle structure can be tailored to the application. Depending on the path of the transporter (straight or curved around the backrest pivot axis), an articulated or fixed connection to the vehicle structure (or the backrest) can be provided.

An electrically releasable lock or a manually releasable lock or a motorized drive can be selected as the lock between the carrier and the transporter. The interfaces of the lock to the carrier and to the transporter are the same for all intended designs of the lock. In the case of the motorized drive, it can be locked by means of its self-locking, in the case of the electrically or manually releasable locks, for example, by means of a freewheel (freewheel clutch).

The electrically releasable lock enables remote release, i. H. a spatial separation between the arrangement of the lock on the one hand and the actuation for releasing on the other hand. For example, the driver releases the lock at the push of a button via an electrical switch and the backrest is adjusted manually (i.e., typically by pressing the back of the occupant on the backrest) by moving the transporter. A spring support between the backrest on the one hand and the seat part or the vehicle structure on the other hand is helpful here. A locking member is in operative connection with the transporter. The locking member is preferably locked by means of a freewheel. The lock is preferably released by means of a lifting magnet which executes an axial movement relative to the locking member. The axial movement is converted into a movement in the circumferential direction by means of wedge-shaped elements, which releases the freewheel. The lifting magnet preferably forms a closed unit, with connection contacts to the outside, which is arranged within a housing of the lock.

The vehicle seat according to the invention, which improves the comfort of the occupant with the adjustable backrest, is preferably used as a second row of seats in vehicles in which the trunk can be enlarged by pivoting the backrest forward. The vehicle seat can have two independently pivotable backrests, which are each connected to the vehicle structure, for example the C-pillar, in the manner according to the invention and for example occupy 1/3 and 2/3 of the total width. The comfort setting of the existing backrests by means of transporters can be carried out independently of one another.

• 1 eine schematisierte Seitenansicht des Fahrzeugsitzes,
• 2 eine Explosionsdarstellung des Verstellmoduls,
• 3A eine Seitenansicht eines Verstellmoduls mit elektrisch lösbarer Sperre,
• 3B eine weitere Seitenansicht von 3A,
• 4A eine Seitenansicht eines Verstellmoduls mit manuell lösbarer Sperre,
• 4B eine weitere Seitenansicht von 4A,
• 5A eine Seitenansicht eines Verstellmoduls mit motorischem Antrieb,
• 5B eine weitere Seitenansicht von 5A,
• 5C eine perspektivische Ansicht von 5A,
• 6 einen Schnitt durch eine elektrisch lösbare Sperre entlang der Linie VI-VI in 8,
• 7 eine perspektivische Ansicht eines Schnittes durch eine elektrisch lösbare Sperre,
• 8 einen Schnitt durch eine elektrisch lösbare Sperre entlang der Linie VIII-VIII in 6, und
• 9 einen zylindrischen Schnitt durch einen Teil einer elektrisch lösbaren Sperre.

The invention is explained in more detail below using an exemplary embodiment shown in the drawing. Show it

• 1 a schematic side view of the vehicle seat,
• 2 an exploded view of the adjustment module,
• 3A a side view of an adjustment module with an electrically releasable lock,
• 3B another side view of 3A ,
• 4A a side view of an adjustment module with a manually releasable lock,
• 4B another side view of 4A ,
• 5A a side view of an adjustment module with a motor drive,
• 5B another side view of 5A ,
• 5C a perspective view of 5A ,
• 6th a section through an electrically releasable lock along the line VI-VI in 8th ,
• 7th a perspective view of a section through an electrically releasable lock,
• 8th a section through an electrically releasable lock along the line VIII-VIII in 6th , and
• 9 a cylindrical section through part of an electrically releasable lock.

A vehicle seat 1 for a rear row of seats of a motor vehicle, for example a station wagon, has a seat part 3 and at least one backrest 4th on. The following directions assume that the vehicle seat 1 is arranged in the forward direction of travel in the motor vehicle, with the vehicle seat in a position of use suitable for passenger transport 1 the back 4th at the rear end of the seat part or seat cushion 3 and is inclined slightly backwards in relation to the vertical. The rest 4th is relative to the seat part 3 around a backrest pivot axis A. pivotable. This is what the backrest is for 4th at its lower end on the seat part 3 or on the vehicle structure S. hinged. The backrest pivot axis A. is arranged horizontally and transversely to the direction of travel. At its upper end is the backrest 4th by means of an adjustment module 10 with the vehicle structure S. detachable and adjustable connected.

The adjustment module exists according to its two tasks (detachable connection and setting) 10 from three assemblies, namely a carrier 11 , a van 12th and a lock 13th . The lock 13th is with a counter element 14th releasably lockable, the transporter 12th this counter element 14th has, in particular is rigidly connected to this. As a lock 13th and counter element 14th a lock and a bracket are preferably provided, it also being possible to use simple pawls or hooks and bolts or eyes. The lock can be used as a lock 13th or as a counter element 14th be used while the bracket assumes the other position. There are locks in a modified version 13th and counter element 14th permanently connected, ie the backrest just swivels 4th possible.

For the adjustment module 10 the arrangement is preferred in which the carrier 11 on the vehicle structure S. and the lock 13th on the back 4th is attached. The transporter 12th is relative to the wearer 11 around the backrest pivot axis A. swivels and moves with the backrest 4th with, preferably still an angle compensation between locking 13th and counter element 14th is possible. By means of the relative movement of the transporter 12th and carrier 11 can the adjustment module 10 the inclination of the backrest 4th in one - the length of the van 12th dependent - set the angle range so that the backrest can be used in different positions 4th possible are. After unlocking the lock 13th is the back 4th can be swiveled completely forward so that it is on the seat part 3 rests, which defines a non-use position that is suitable for increasing the loading volume.

The carrier 11 is designed in several parts and comprises a first adapter plate 11a which the vehicle structure S. facing, and a second adapter plate 11b which of the lock 13th is facing and can therefore be designed as a screen. The second adapter plate 11b exhibits a backdrop 17th through which that on the transporter 12th attached counter element 14th protrudes. The ends of the backdrop 17th serve as end stops for the counter element 14th . The first adapter plate 11a and the second adapter plate 11b are firmly connected to each other and take the transporter between them 12th on. The carrier 11 can alternatively be made in one piece.

The transporter 12th is designed as an arc segment, which around the backrest pivot axis A. is curved. On the backrest pivot axis A. facing longitudinal side of the arch segment is a toothing 18th on the transporter 12th educated. The transporter 12th is transverse to its direction of movement in the carrier 11 laterally guided, for example with the interposition of gliders. So much for the gearing 18th of the transporter 12th is not curved around the backrest pivot axis, the guidance of the transporter should 12th in the carrier 11 rotatable about a horizontal axis on the vehicle structure S. be attached. There are other versions of the transporter 12th conceivable.

A lock 20th has a locking member 25th on which around his (to the backrest pivot axis A. parallel) axis is rotatable, which defines a local cylindrical coordinate system. The barrier 20th is on that of the second adapter plate 11b side facing away (i.e. that of the vehicle structure S. facing side) of the first adapter plate 11a arranged and on the carrier 11 attached. The locking member 25th protrudes with one pinion 27 through an opening in the first adapter plate 11a into the interior of the carrier 11 where the pinion 27 with the gearing 18th combs. The locking member 25th is preferably an extension of the pinion 27 on the second adapter plate 11b stored and axially secured, for example with a cover plate screwed on at the end.

The locking member 25th can be designed in one piece with several components arranged axially next to one another or consist of several individual parts firmly connected to one another.

There are now different combinations of locks and drives for the relative movement of the transporter 12th and carrier 11 possible. So can the lock 20th for example be electrically releasable and the relative movement manually, for example by the occupant of the vehicle seat 1 initiated pull or pressure on the backrest 4th , possibly also spring-assisted, be drivable.

Such an electrically releasable lock 20th includes, for example, a freewheel 30th with an inner ring 31 , an outer ring 33 , multiple roles 35 , several elastic elements 36 and several control fingers 37 . The inner ring 31 is part of the locking member 25th in the axial continuation of the pinion 27 . Take the inner ring in a manner known per se 31 and the outer ring 33 , which radially (with respect to the locking member 25th ) outside the inner ring 31 is arranged, the rollers radially between them 35 on, between which the elastic elements in the circumferential direction 36 and the control fingers 37 take turns. The roles 35 lie on the running surfaces of the inner ring 31 and the outer ring 33 one of the two running surfaces, in this case the one on the outer ring 33 , has a variable radius in the circumferential direction. This includes the freewheel 30th (radial) wide places where the elastic elements 36 are arranged, and wedge-shaped narrowing points where the control fingers 37 are arranged. While the elastic elements 36 , preferably rubber buffers, preferably directly on the rollers adjacent to them (on both sides in the circumferential direction) 35 is between each control finger 37 and the adjacent rollers (on both sides in the circumferential direction) 35 one more cheek each 38 arranged.

In the axial continuation of the inner ring 31 has the locking member 25th a storage section 41 on. Preferably the diameter of the cylindrical bearing section is 41 smaller than that of the inner ring 31 . Rotatable on this bearing section 41 sit an expanding ring 43 which the cheeks 38 axially protruding carries, and a control disc 45 showing the control fingers 37 axially protruding. The expansion ring is optional 43 on a collar of the control disk 45 stored. The expanding ring 43 but can also be done on the outer ring 33 be attached. Axially between expansion ring 43 and control disk 45 is a spring, in this case a wave spring 47 , arranged, which the bearing section 41 encloses and which the expansion ring 43 and the control disk 45 spreads apart. There is control disk 45 relative to the outer ring 33 movable in the axial direction. Preferably there are multiple guide pins 49 provided (for example rivets), which are arranged in the axial direction and both through the outer ring 33 as well as through the control disk 45 are plugged in to the relative movement of the outer ring 33 and control disk 45 respectively. The guide pins 49 preferably have heads at their ends with which they limit the relative movement of the outer ring 33 and control disk 45 form, so ensure axial cohesion.

In the axial continuation of the bearing section 41 the locking member has an anchor 51 on. The anchor 51 consists of the frustoconical section 51a , which is located directly on the storage section 41 adjoins, a cylindrical section 51b , which is attached to the frustoconical section 51a adjoins, and optionally an end section 51c . On the anchor 51 , more precisely on the cylindrical section 51b , is a lifting magnet 55 axially moveable. The lifting magnet 55 has a lifting plate 55a on, which is centrally provided with an opening with a frustoconical edge. The lifting plate 55a lies on the control disc 45 on, is connected to it or is formed in one piece with it (which reduces the overall height and thus the use of material). The lifting magnet 55 also has a lifting pot 55b on which the lifting plate 55a largely closes. Inside the lifting pot 55b is a coil 55c arranged which - at a distance - around the anchor 51 is wound, ie around its cylindrical portion 51b . The connection contacts 57 for the coil 55c are radially out of the lifting pot 55b led out.

From freewheeling 30th up to the lifting magnet 55 are the components of the lock 20th within a housing 61 arranged. The cup-shaped housing 61 is through a housing cover connected to it 63 largely closed. The locking member 25th is on the end with the pinion 27 rotatable in the housing cover 63 stored on which the outer ring 33 is attached, for example by means of the guide pins 49 . The locking member 25th is also with the anchor 51 , preferably the end section 51c , rotatable in the housing 61 stored. The lifting magnet is a modified version 55 with his lifting pot 55b directly in the housing 61 stored while the anchor 51 by means of the lifting magnet 55 indirectly in the housing 61 is stored.

The anchor 51 can improve the performance of the lifting magnet 55 with a sub-area, for example the one about the lifting pot 55b protruding and in the housing 61 stored end section 51c , be made of non-magnetizable material, such as stainless steel.

The lock is in the initial state 20th because the freewheel 30th Is blocked. For this are the roles 35 by the prestressed elastic elements 36 in the wedge-shaped narrowing points between the outer ring 33 and inner ring 31 pressed in and thereby clamp the inner ring 31 fixed, causing rotation of the locking member 25th (in both possible directions of rotation) prevented. The wave spring 47 holds the control disk 45 at a distance from that on the outer ring 33 adjacent expanding ring 43 . The cheeks 38 are not from the control fingers 37 applied. The lifting magnet 55 lies on the control disc 45 on (or is connected to this or formed in one piece). Between the frustoconical section 51a of the anchor 51 and the frustoconical edge of the central opening of the lifting plate 55a there is a conical air gap in the present case, hereinafter referred to as a gap G designated. anchor 51 , Lifting plate 51a and lifting pot 55b are preferably made of soft iron, while the adjacent components of the lock 20th , for example the housing 61 and the control disk 45 , are non-magnetic and are made of plastic, for example.

To the lock 20th electrically solving will be the coil 55c energized. The sink 55c creates a magnetic field whose magnetic flux lines pass through the armature 51 , the lifting pot 55b , the lifting plate 55a , the gap G between lifting plate 55a and anchor 51 back to the anchor 51 run (or in the opposite direction). The attraction between anchors 51 and lifting plate 55a , which when the gap is reduced G would lead to a shortening of the magnetic field lines, a force builds up F. on which the anchor 51 in the solenoid 55 pulls, ie the solenoid 55 at anchor 51 axially shifts along. The lifting magnet 55 acts on the control disk 45 , against the bias of the wave spring 47 . The control disk 45 pushes her wedge-shaped control fingers 37 between the - for example oppositely wedge-shaped - jaws 38 so that these are acted upon. The cheeks 38 are thereby pressed to the side in the circumferential direction, causing the rollers 35 from the wedge-shaped narrowing points between the outer ring 33 and inner ring 31 be pushed out, causing the clamping effect of the rollers 35 cancels. The inner ring 31 , so the locking member 25th , is now rotatable, ie the lock 20th is (electrically) solved. The transporter 12th (and with it the backrest 4th ) can now be done manually relative to the carrier 11 be moved.

By precisely shaping the gap G are different characteristics for the force F. realizable, so that thereby the lifting magnet 55 can be adapted to the specific application.

Will energize the coil 55c finished, separates the wave spring 47 again the anchor 51 and the lifting plate 55a by the control disk 45 and the lifting plate 55a in the axial direction from the expansion ring 43 be moved away. This will be the control fingers 37 from the cheeks 38 drawn, and the elastic elements 36 bring the roles 35 to clamp again.

As an alternative to this electrically releasable lock 20th with manual drive of the transporter 12th can be a manually releasable lock 20 ' with manual drive of the transporter 12th or a motor drive 20 '' with (integrated or separate electrically releasable) lock can be used. The manually releasable lock 20 ' is for example a freewheel 30th , its control disk 45 not by a lifting magnet 55 is moved, but for example by rotating a further disc by means of a Bowden cable, this further disc and the control disc 45 cooperate by means of material parts growing in a wedge shape in the circumferential direction and axially projecting material parts. The motor drive 20 '' with lock is, for example, a self-locking electric motor, which the locking member by means of a gear 25th turns. Thus, a modular system is available with the carrier 11 , Transporter 12th , Locking 13th and counter element 14th are the same while the lock of the transporter 12th from one of the three options mentioned (electrically releasable lock 20th , manually releasable lock 20 ' , motorized drive 20 '' ) is selected.

The interfaces of the lock are in this kit 20th , 20 ' or the drive 20 '' to the transporter 12th , namely the pinion 27 , and to the carrier 11 for all three types of lock 20th , 20 ' and drive 20 '' the same to ensure direct interchangeability. The interface of the lock 20th , 20 ' or the drive 20 '' to the carrier 11 can be implemented, for example, by screw connections, suspensions, clip connections, bayonet locks or combinations thereof, with at least two connection points - distributed in the circumferential direction - being present.

List of reference symbols

1

Vehicle seat

3

Seat part (seat cushion)

4th

rest

10

Adjustment module

11

carrier

11a

first adapter plate

11b

second adapter plate

12th

Transporter

13th

Locking

14th

Counter element

17th

Backdrop

18th

Interlocking

20th

(electrically releasable) lock

20 '

manually releasable lock

20 "

motor drive

25th

Locking member

27

pinion

30th

Freewheel

31

Inner ring

33

Outer ring

35

role

36

elastic element

37

Control finger

38

jaw

41

Warehouse section

43

Expanding ring

45

Control disk

47

Wave spring

49

Guide pin

51

anchor

51a

frustoconical section

51b

cylindrical section

51c

End section

55

Lifting magnet

55a

Lifting plate

55b

Lifting pot

55c

Kitchen sink

57

Connection contact

61

casing

63

Housing cover

A.

Backrest pivot axis

F.

power

G

gap

S.

Vehicle structure

Claims (8)

Vehicle seat (1), in particular motor vehicle seat, with a first assembly, a second assembly movable relative to it and an adjustment module (10), by means of which the second assembly is detachably connected to the first assembly in various positions of use, the adjustment module (10) being a carrier (11), which is attached to the first assembly, and a transporter (12), which is movable to move the second assembly relative to the carrier (11) and can be connected to the second assembly, the first assembly being a vehicle structure ( S) and a backrest (4), which can be pivoted about a backrest pivot axis (A) relative to the vehicle structure (S), is provided as the second assembly, the carrier (11) being constructed in several parts and a first adapter plate (11a), which the Vehicle structure (S), and a second adapter plate (11b), which faces a lock (13), comprises, the second adapter plate (11b) a gate (1st 7) through which a counter element (14) attached to the transporter (12) protrudes, the first adapter plate (11a) and the second adapter plate (11b) being firmly connected to one another and receiving the transporter (12) between them, the adjustment module (10) has a lock which is attached to the carrier (11) and has a locking member (25), characterized in that the locking member (25) meshes with a toothing (18) of the transporter (12) by means of a pinion (27) , wherein an electrically releasable lock (20) or a manually releasable lock (20 ') or a motorized drive (20 ") can be selected as the lock, and the attachment of the lock on the carrier (11) and the pinion (27) as interfaces the lock to the carrier (11) and to the transporter (12) are the same for all intended designs of the lock. Vehicle seat (1) according to Claim 1 , characterized in that the adjustment module (10) has the lock (13) and the counter element (14) which can be locked with the lock (13), of which the counter element (14) on the transporter (12) and the lock (13) on the second assembly is provided, wherein the locking (13) and counter element (14) in particular a lock and a bracket are provided. Vehicle seat (1) according to one of the preceding claims, characterized in that the motor drive (20 ") is self-locking. Vehicle seat (1) according to one of the preceding claims, characterized in that the electrically releasable lock (20) or the manually releasable lock (20 ') contains a freewheel (30). Vehicle seat (1) according to Claim 4 , characterized in that the freewheel (30) comprises: a Inner ring (31) and an outer ring (33), which radially have broad spots between them and wedge-shaped narrowing spots, several rollers (35) which are arranged radially between the inner ring (31) and the outer ring (33), elastic elements ( 36) and control fingers (37), which are arranged alternately in the circumferential direction between the rollers (35), the elastic elements (36) being arranged at the wide points and the control fingers (37) at the wedge-shaped narrowing points. Vehicle seat (1) according to Claim 5 , characterized in that the control fingers (37) are axially movable, in particular protrude from a control disc (45), and that the control fingers (37) grip between jaws (38) which move in the circumferential direction during the axial movement of the control fingers (37) move. Vehicle seat (1) according to Claim 6 , characterized in that the control fingers (37) are movable by means of a lifting magnet (55) which interacts with an armature (51) which is connected in particular to the inner ring (31). Vehicle seat (1) according to Claim 7 , characterized in that the lifting magnet (55) has a lifting plate (55a) which is arranged with a gap (G) at a distance from the armature (51).

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