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EP0844940A1 - Motor vehicle seat - Google Patents

Motor vehicle seat

Info

Publication number
EP0844940A1
EP0844940A1 EP97929181A EP97929181A EP0844940A1 EP 0844940 A1 EP0844940 A1 EP 0844940A1 EP 97929181 A EP97929181 A EP 97929181A EP 97929181 A EP97929181 A EP 97929181A EP 0844940 A1 EP0844940 A1 EP 0844940A1
Authority
EP
European Patent Office
Prior art keywords
motor vehicle
side support
vehicle seat
seat
seat according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97929181A
Other languages
German (de)
French (fr)
Inventor
Hansjörg Walk
Peter Groche
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lear Corp
Original Assignee
Lear Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lear Corp filed Critical Lear Corp
Publication of EP0844940A1 publication Critical patent/EP0844940A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
    • B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42772—Seats or parts thereof displaced during a crash characterised by the triggering system
    • B60N2/4279—Seats or parts thereof displaced during a crash characterised by the triggering system electric or electronic triggering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/888—Head-rests with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest

Definitions

  • the invention relates to a motor vehicle seat with side supports of seat components which are arranged to be movable relative to one another and can be adjusted by means of an adjusting device. These form adjustable seat contours.
  • Adjustable shoulder supports are known in the area of the shoulder, which allow the shoulder area to be rotated about the vehicle's transverse axis.
  • the object of the invention is to create a motor vehicle seat which, depending on the respective movement and acceleration state, permits dynamic seat adjustment for the seat user and thus relieves the latter.
  • a motor vehicle seat with the features of claim 1 solves this problem.
  • the movement state of the vehicle can be detected by means of a detection device, which causes the adjusting device to control at least one side support via at least one actuator such that the seat user is automatically relieved in the event of lateral accelerations during the driving process
  • a detection device which causes the adjusting device to control at least one side support via at least one actuator such that the seat user is automatically relieved in the event of lateral accelerations during the driving process
  • Motor vehicle seat created which, depending on the lateral acceleration state, permits dynamic adaptation of the respective side support, in particular a shoulder contact surface of the seat user, and relieves the latter.
  • the contact area of the occupant shoulder can track the body and steering movement of the occupant when cornering, with additional support in the lower backrest area being possible in the event of lateral acceleration. Furthermore, it is possible to provide the driver with additional freedom of movement when cornering by turning away the shoulder rest on the side of the seat facing the center of curvature. Further advantageous embodiments of the motor vehicle seat according to the invention are the subject of the dependent claims.
  • the dynamic adjustment device described in more detail below is not only suitable for the backrest of a motor vehicle seat, but can also be used additionally or alternatively for the seat part or the headrest.
  • Fig.l is a front view of a backrest
  • FIG. 2 shows a section along the line II-II in FIG. 1;
  • FIG. 3 shows a section along the line III - III in FIG. 1;
  • Fig.4 shows a section along the line IV - IV in Fig.1.
  • a backrest 10 of a motor vehicle seat is shown in a schematic view from the front.
  • the backrest 10 can have a fixed or movable backrest area 12 in the center and a side support 14 on the edge side.
  • a detection device not shown, which has acceleration sensors and / or motion sensors, in particular for detecting the acceleration forces on the vehicle or the steering wheel angle and the vehicle speed, and which transmits its measurement data to an electronic evaluation and control unit which transmits the adjustment device device 16 causes, via individual actuators, such as a servomotor 1 8, to control at least one side support 14 such that the seat user is automatically relieved during the driving operation of the vehicle.
  • the side support 14 provided for this purpose as a function of the vehicle accelerations occurring and / or the size of the steering wheel lock, the side support in question being returned to an initial position by means of the adjusting device 16 or a spring accumulator, for example for the case that the state of motion of the vehicle is zero, ie the vehicle is stationary.
  • the adjusting device 16 shown below which is shown in detail, is not only suitable for use with backrests, but can accordingly also be used for the seat part or for headrests as an integrated component of the backrest or for headrests as an independent vehicle seat component. It is preferably provided that, in the event of a transverse acceleration in the respective direction of the curve, the adjusting device 16 controls at least the side support 14 of the backrest 10 which is located outside in the direction of the curve.
  • the shoulder system 22 can, as indicated in FIG. 1, by one to the upper end of the backrest 97/48571 PC17EP97 / 03092
  • pivot axis 26 can be rotatably arranged, the two pivot axes 26 meeting in an imaginary extension above the backrest 10 at an acute angle.
  • the surfaces of the shoulder system 22 facing the seat user are selected in terms of area such that they can act effectively on the shoulder contour.
  • the pivot axes 26 merge into axes of rotation 28, which run vertically when viewed in the direction of FIG.
  • the lower part 24 of the respective side support 14 is arranged rotatably about the respective axis of rotation 28.
  • all parts 20, 24 of the two side supports 14 are arranged so as to be pivotable about a common central pivot axis 30, whereby provision can be made, at least in part, for a corresponding one Embodiment to allow an adjustment movement with respect to the seat user via the pivot or rotation axes 26,28.
  • the swivel or rotation axes 26, 28 can become boundary lines which limit the swivel movement. Provision can be made to form the respective Schaulter system 22 in one piece, preferably in the manner of a triangle or a trapezoid.
  • the ratio of the largest to the smallest effective width of the side support 14 or the shoulder support 22 then takes on the value of at least 1 to 1.5, this width ratio being measured transversely to the longitudinal axis of the vehicle.
  • a servomotor 18 shown in FIG. 1 serves as the drive unit for each side support 14 and controls the lower 24 and the upper part 20 of each side support 14 synchronously via a drive gear designated as a whole as 32.
  • the drive gear 32 each has a drive shaft 34, of which only the central longitudinal axis is shown in principle in FIG. 1 and which, for the sake of simplicity, is only shown on the right in the direction of view of the respective illustration in FIGS. 1 ff.
  • the respective drive shaft 34 is driven via a corresponding gear, for example in the form of a gear transmission, by the associated electric servomotor 18. Counter-clockwise and counterclockwise drive directions are possible and provided. As FIGS. 2 and 3 show, the drive shaft 34 meshes with control gears 36, 38, which are each provided with two control cams 40, 42. With an arrangement of the drive gear 32, as shown in FIGS. 2 and 3, it is also possible, as explained below, to control both side supports 14 with only one drive unit in the form of the servomotor 1 8.
  • the upper control cam 40 is intended to cooperate with a first control bracket 44, whereas the second control bracket 46 is assigned to the lower control cam 42.
  • the two control brackets 44, 46 are penetrated jointly by the central pivot axis 30, the first control bracket 44 having recesses on opposite sides, into which the receptacles 48 engage for receiving a headrest, not shown. If the control gears 36, 38 are pivoted clockwise via the drive shaft 34, the control cam 40 pushes the first control bracket 44 from its position shown in FIG. 2 to a folded-up position as shown in FIG. 3.
  • a seat user will receive a support on the right side of the body if he or she makes a left turn with his vehicle.
  • the second control bracket 46 is appropriately controlled and presented via the lower control cam 42.
  • a resetting of the respective side support 14 can take place via the physical strength of the seat user in a casual contact with the seat cushion parts 50 or, as shown in FIG. 4, via a spring system 52 with tension springs 54 which are connected to one another via coupling rods 56 and on the back with the seat upholstery parts 50 to be delivered, in particular with the lower part 24 of the respective side cheek 14.
  • the lower parts 24 of the side support 14 can be arranged with their seat upholstery parts 50 towards the inside of the backrest 10 on shells 58 of the motor vehicle seat which, after the respective tension spring has been contracted 54 are moved back to their basic position from their left position, as viewed in the direction of FIG. 4, in which case an edge-free area of the shell 58 then engages in a receiving space 60 of the housing-like seat frame 62.
  • the motor vehicle seat With the motor vehicle seat according to the invention, it is possible to use the lateral supports effectively to keep the upper body in the driving position, particularly in the case of lateral accelerations. Care is taken to ensure that the forces acting on the body are absorbed as close as possible to the point of application of the force.
  • the support is shifted, as is the case with the known solutions, to more distant parts of the body, higher muscle and joint loads occur, which are avoided with the present solution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention relates to a motor vehicle seat with mutually movable side supports (14) of seat components (12) adjustable by means of an adjusting device (16). As the state of movement of the vehicle can be detected by a detecting device, allowing the adjuster (16) to control at least one side support (14) via an actuator (18) in such a way that, during lateral acceleration during travel the seat user is automatically relieved of stress, a motor vehicle seat is provided which effects a dynamic seat adjustment for the user dependently upon the prevailing state of movement and thus makes him/her more comfortable.

Description

97/48571 PC17EP97/03092 97/48571 PC17EP97 / 03092
KraftfahrzeugsitzMotor vehicle seat
Die Erfindung betrifft einen Kraftfahrzeugsitz mit zueinander bewegbar ange¬ ordneten, mittels einer Einsteilvorrichtung einstellbaren Seitenstützen von Sitzkomponenten. Diese bilden verstellbare Sitzkonturen.The invention relates to a motor vehicle seat with side supports of seat components which are arranged to be movable relative to one another and can be adjusted by means of an adjusting device. These form adjustable seat contours.
Bekannte Sitze verfügen über eine Reihe von statischen Einstellmöglichkeiten, um die Sitzposition und die Sitzkontur den individuellen Körperabmessungen des Insassen anzupassen. Im Bereich der Schulter sind einstellbare Schulter¬ stützen bekannt, die eine Drehung des Schulterbereichs um die Fahrzeugquer¬ achse erlauben.Known seats have a number of static adjustment options in order to adapt the sitting position and the seat contour to the individual body dimensions of the occupant. Adjustable shoulder supports are known in the area of the shoulder, which allow the shoulder area to be rotated about the vehicle's transverse axis.
Fährt man mit dem Kraftfahrzeug durch eine Kurve, so wird der Insasse aus dem Sitz fort vom Kurvenmittelpunkt gedrängt. Als Abstützhilfe dienen hier bei den bekannten Lösungen Seitenstützen im unteren Bereich der Lehne, die jedoch die relativ großen Massen von Oberkörper und Kopf des Insassen nicht wirksam abstützen können. Darüber hinaus entstehen bei diesen bekannten Ausführungen an der Seitenstütze hohe örtliche Pressungen, weil die Kontur des Insassenrückens und die Kontur der Lehne bei Belastung quer zur Fahrt¬ richtung stark voneinander abweichen. Für den Fahrer kommt ergänzend hinzu, daß er während der Kurvenfahrt aufgrund der Lenkbewegung den Kontakt mit dem Schulterbereich des Sitzes auf der dem Kurvenmittelpunkt abgewandten Seite verliert, wohingegen auf der anderen Seite der Lehne es zu einer Bewe¬ gungseinengung kommt, weil der Schulterbereich eine Rückwärtsbewegung des Schulter- und Ellenbogenbereichs behindert.If you drive the vehicle through a curve, the occupant is pushed out of the seat away from the center of the curve. In the known solutions, side supports in the lower region of the backrest serve as a support aid, but these cannot effectively support the relatively large masses of the upper body and head of the occupant. In addition, these are known Versions on the side support high local pressures because the contour of the back of the occupant and the contour of the backrest differ greatly from one another when loaded transversely to the direction of travel. For the driver there is also the additional fact that during cornering, due to the steering movement, he loses contact with the shoulder area of the seat on the side facing away from the center of the curve, whereas on the other side of the backrest there is a movement restriction because the shoulder area moves backwards of the shoulder and elbow area.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen Kraftfahrzeugsitz zu schaffen, der in Abhängigkeit des jeweili¬ gen Bewegungs- und Beschleunigungszustandes eine dynamische Sitzanpassung für den Sitzbenutzer erlaubt und mithin diesen entlastet. Eine dahingehende Aufgabe löst ein Kraftfahrzeugsitz mit den Merkmalen des Anspruchs 1 .Proceeding from this prior art, the object of the invention is to create a motor vehicle seat which, depending on the respective movement and acceleration state, permits dynamic seat adjustment for the seat user and thus relieves the latter. A motor vehicle seat with the features of claim 1 solves this problem.
Dadurch, daß gemäß dem kennzeichnenden Teil des Anspruchs 1 mittels einer Erfassungseinrichtung der Bewegungszustand des Fahrzeuges erfaßbar ist, die die Einstellvorrichtung veranlaßt, über mindestens einen Aktuator mindestens eine Seitenstütze derart anzusteuern, daß bei Querbeschleunigungen während des Fahrvorganges automatisch eine Entlastung des Sitzbenutzers erfolgt, ist ein Kraftfahrzeugsitz geschaffen, der in Abhängigkeit des Seitenbeschleunigungs- zustandes eine dynamische Anpassung der jeweiligen Seitenstütze, insbesonde¬ re einer Schulteranlagefläche des Sitzbenutzers, erlaubt und diesen entlastet.The fact that, according to the characterizing part of claim 1, the movement state of the vehicle can be detected by means of a detection device, which causes the adjusting device to control at least one side support via at least one actuator such that the seat user is automatically relieved in the event of lateral accelerations during the driving process Motor vehicle seat created which, depending on the lateral acceleration state, permits dynamic adaptation of the respective side support, in particular a shoulder contact surface of the seat user, and relieves the latter.
So kann der Anlagebereich der Insassenschulter bei Kurvenfahrten der Körper- und Lenkbewegung des Insassen nachgeführt werden, wobei eine zusätzliche Abstützung im unteren Lehnenbereich bei Seitenbeschleunigungen möglich ist. Ferner ist es möglich, dem Fahrer in Kurvenfahrten zusätzlichen Bewegungs¬ freiraum durch Wegdrehen der Schulterauflage auf der dem Krümmungsmittel¬ punkt zugewandten Seite des Sitzes zu schaffen. Weitere vorteilhafte Ausführungsformen des erfindungsgemäßen Kraftfahrzeug¬ sitzes sind Gegenstand der Unteransprüche.In this way, the contact area of the occupant shoulder can track the body and steering movement of the occupant when cornering, with additional support in the lower backrest area being possible in the event of lateral acceleration. Furthermore, it is possible to provide the driver with additional freedom of movement when cornering by turning away the shoulder rest on the side of the seat facing the center of curvature. Further advantageous embodiments of the motor vehicle seat according to the invention are the subject of the dependent claims.
Die im folgenden näher beschriebene dynamische Einstellvorrichtung ist nicht nur für die Rückenlehne eines Kraftfahrzeugsitzes geeignet, sondern kann vielmehr auch zusätzlich oder alternativ für das Sitzteil oder die Kopfstütze eingesetzt werden.The dynamic adjustment device described in more detail below is not only suitable for the backrest of a motor vehicle seat, but can also be used additionally or alternatively for the seat part or the headrest.
Im folgenden wird eine Ausführungsform des Kraftfahrzeugsitzes mit Einsteilvor¬ richtung anhand einer Rückenlehne nach der Zeichnung näher erläutert.In the following an embodiment of the motor vehicle seat with Einteilvor¬ direction is explained in more detail using a backrest according to the drawing.
Es zeigen in prinzipieller und nicht maßstäblicher Darstellung dieThey show the principle and not to scale
Fig.l eine vordere Ansicht auf eine Rückenlehne;Fig.l is a front view of a backrest;
Fig.2 vergrößert einen Schnitt längs der Linie II - II in Fig.1 ;2 shows a section along the line II-II in FIG. 1;
Fig.3 vergrößert einen Schnitt längs der Linie III - III in Fig.1 ;3 shows a section along the line III - III in FIG. 1;
Fig.4 vergrößert einen Schnitt längs der Linie IV - IV in Fig.1 .Fig.4 shows a section along the line IV - IV in Fig.1.
In der Fig.l ist in einer Prinzipdarstellung von vorne gesehen eine Rückenlehne 10 eines nicht näher dargestellten Kraftfahrzeugsitzes gezeigt. Die Rückenlehne 10 kann mittig einen feststehenden oder bewegbaren Rückenlehnenbereich 12 aufweisen sowie randseitig jeweils eine Seitenstütze 14. Zum Einstellen der Seitenstütze 14 ist randseitig im Bereich der Rückenlehne 12 jeweils eine als Ganzes mit 1 6 bezeichnete Einstellvorrichtung vorhanden. Des weiteren ist eine nicht näher dargestellte Erfassungseinrichtung vorhanden, die Beschleunigungssensoren und/oder Bewegungssensoren, insbesondere zur Erfassung der Beschleunigungskräfte am Fahrzeug bzw. des Lenkradeinschlages und der Fahrzeuggeschwindigkeit, aufweist und die ihre Meßdaten an eine elektronische Auswerte- und Steuereinheit weitergibt, die die Einstellvorrich¬ tung 16 veranlaßt, über Einzelaktuatoren, wie einen Stellmotor 1 8, mindestens eine Seitenstütze 14 derart anzusteuern, daß während des Fahrvorganges des Fahrzeuges automatisch eine Entlastung des Sitzbenutzers erfolgt.In Fig.l a backrest 10 of a motor vehicle seat, not shown, is shown in a schematic view from the front. The backrest 10 can have a fixed or movable backrest area 12 in the center and a side support 14 on the edge side. Furthermore, there is a detection device, not shown, which has acceleration sensors and / or motion sensors, in particular for detecting the acceleration forces on the vehicle or the steering wheel angle and the vehicle speed, and which transmits its measurement data to an electronic evaluation and control unit which transmits the adjustment device device 16 causes, via individual actuators, such as a servomotor 1 8, to control at least one side support 14 such that the seat user is automatically relieved during the driving operation of the vehicle.
Es ist mithin eine kontinuierliche Anpassung der jeweils hierfür vorgesehenen Seitenstütze 14 in Abhängigkeit von den auftretenden Fahrzeugbeschleunigun¬ gen und/oder von der Größe des Lenkradeinschlages möglich, wobei eine Rückführung der dahingehenden Seitenstütze in eine Ausgangsstellung mittels der Einstellvorrichtung 16 oder eines Federspeichers erfolgt, beispielsweise für den Fall, daß der Bewegungszustand des Fahrzeuges Null ist, das Fahrzeug also steht. Die nachfolgend, im einzelnen aufgezeigte Einstellvorrichtung 16 ist nicht nur für eine Anwendung bei Rückenlehnen geeignet, sondern kann entsprechend auch für das Sitzteil Verwendung finden oder für Kopfstützen als integriertem Bestandteil der Rückenlehne oder für Kopfstützen als eigenständige Fahrzeugsitzkomponente. Vorzugsweise ist vorgesehen, daß bei einer Quer¬ beschleunigung in der jeweiligen Kurvenrichtung die Einstellvorrichtung 16 zumindest die in der Kurvenrichtung außenliegende Seitenstütze 14 der Rük- kenlehne 10 ansteuert.It is therefore possible to continuously adapt the side support 14 provided for this purpose as a function of the vehicle accelerations occurring and / or the size of the steering wheel lock, the side support in question being returned to an initial position by means of the adjusting device 16 or a spring accumulator, for example for the case that the state of motion of the vehicle is zero, ie the vehicle is stationary. The adjusting device 16 shown below, which is shown in detail, is not only suitable for use with backrests, but can accordingly also be used for the seat part or for headrests as an integrated component of the backrest or for headrests as an independent vehicle seat component. It is preferably provided that, in the event of a transverse acceleration in the respective direction of the curve, the adjusting device 16 controls at least the side support 14 of the backrest 10 which is located outside in the direction of the curve.
Als besonders vorteilhaft hat es sich erwiesen, die beiden Seitenstützen 14 der Rückenlehne 10 zweizuteilen, wobei der obere Teil 20 der jeweiligen Seiten¬ stütze 14 eine der Schulterkontur des Sitzbenutzers angepaßte Schulteranlage 22 aufweist, und wobei der untere Teil 24 der jeweiligen Seitenstütze 14 syn¬ chron der Bewegung des oberen Teils 20 nachfolgt. Die Schulteranlage 22 kann, wie dies die Fig.1 andeutet, um eine zum oberen Ende der Rückenlehne 97/48571 PC17EP97/03092It has proven to be particularly advantageous to split the two side supports 14 of the backrest 10 in two, the upper part 20 of the respective side support 14 having a shoulder system 22 adapted to the shoulder contour of the seat user, and the lower part 24 of the respective side support 14 syn¬ chron follows the movement of the upper part 20. The shoulder system 22 can, as indicated in FIG. 1, by one to the upper end of the backrest 97/48571 PC17EP97 / 03092
- 5 -- 5 -
10 geneigte Schwenkachse 26 drehbar angeordnet sein, wobei die beiden Schwenkachsen 26 in einer fiktiven Verlängerung oberhalb der Rückenlehne 10 in einem spitzen Winkel aufeinandertreffen. Die dem Sitzbenutzer zugewand¬ ten Oberflächen der Schulteranlage 22 sind flächenmäßig derart gewählt, daß sie wirksam auf die Schulterkontur einwirken können. An ihrem unteren Be¬ reich gehen die Schwenkachsen 26 in Drehachsen 28 über, die in Blickrich¬ tung auf die Fig.l gesehen vertikal verlaufen. Um die jeweilige Drehachse 28 ist das untere Teil 24 der jeweiligen Seitenstütze 14 drehbar angeordnet.10 inclined pivot axis 26 can be rotatably arranged, the two pivot axes 26 meeting in an imaginary extension above the backrest 10 at an acute angle. The surfaces of the shoulder system 22 facing the seat user are selected in terms of area such that they can act effectively on the shoulder contour. At its lower area, the pivot axes 26 merge into axes of rotation 28, which run vertically when viewed in the direction of FIG. The lower part 24 of the respective side support 14 is arranged rotatably about the respective axis of rotation 28.
Vorzugsweise ist jedoch wie bei der vorliegenden Ausführungsform nach den Fig.l bis 4 vorgesehen, daß alle Teile 20,24 der beiden Seitenstützen 14 um eine gemeinsame mittige Schwenkachse 30 schwenkbar angeordnet sind, wo¬ bei vorgesehen sein kann, zumindest teilweise auch bei einer dahingehenden Ausgestaltung eine Einstellbewegung im Hinblick auf den Sitzbenutzer über die Schwenk- oder Drehachsen 26,28 zu ermöglichen. Des weiteren können bei einer dahingehenden Ausgestaltung aus den Schwenk- oder Drehachsen 26,28 Begrenzungslinien werden, die die Schwenkbewegung begrenzen. Es kann vorgesehen sein, die jeweilige Schaulteranlage 22 einstückig auszubilden, vorzugsweise in der Art einer Dreiecks oder eines Trapezes. Das Verhältnis der größten zur kleinsten wirksamen Breite der Seitenstütze 14 oder der Schulter¬ anlage 22 nimmt dann den Wert von mindestens 1 zu 1 ,5 ein, wobei dieses Breitenverhältnis quer zur Fahrzeuglängsachse gemessen wird.However, as in the present embodiment according to FIGS. 1 to 4, it is preferably provided that all parts 20, 24 of the two side supports 14 are arranged so as to be pivotable about a common central pivot axis 30, whereby provision can be made, at least in part, for a corresponding one Embodiment to allow an adjustment movement with respect to the seat user via the pivot or rotation axes 26,28. In addition, in the case of an embodiment of this type, the swivel or rotation axes 26, 28 can become boundary lines which limit the swivel movement. Provision can be made to form the respective Schaulter system 22 in one piece, preferably in the manner of a triangle or a trapezoid. The ratio of the largest to the smallest effective width of the side support 14 or the shoulder support 22 then takes on the value of at least 1 to 1.5, this width ratio being measured transversely to the longitudinal axis of the vehicle.
Als Antriebseinheit für jede Seitenstütze 14 dient ein in der Fig.l dargestellter Stellmotor 18, der über ein als Ganzes mit 32 bezeichnetes Antriebsgetriebe synchron den unteren 24 und den oberen Teil 20 einer jeden Seitenstütze 14 ansteuert. Das Antriebsgetriebe 32 weist jeweils eine Antriebswelle 34 auf, von der in der Fig.l nur die Mitten längsachse prinzipiell dargestellt ist und die der einfacheren Darstellung wegen in den Fig.1 ff nur in Blickrichtung auf die jewei¬ lige Darstellung rechts eingezeichnet ist. Die entsprechenden Verhältnisse O 97/48571 PC17EP97/03092A servomotor 18 shown in FIG. 1 serves as the drive unit for each side support 14 and controls the lower 24 and the upper part 20 of each side support 14 synchronously via a drive gear designated as a whole as 32. The drive gear 32 each has a drive shaft 34, of which only the central longitudinal axis is shown in principle in FIG. 1 and which, for the sake of simplicity, is only shown on the right in the direction of view of the respective illustration in FIGS. 1 ff. The corresponding conditions O 97/48571 PC17EP97 / 03092
- 6 - könnten jedoch auch für den gegenüberliegenden Rückenlehnenbereich 12 vor¬ gesehen sein. Die jeweilige Antriebswelle 34 wird über ein entsprechendes Getriebe, beispielsweise in Form eines Zahnradgetriebes, durch den zugeordne¬ ten elektrischen Stellmotor 18 angetrieben. Dabei sind gegenläufige Antriebs¬ richtungen im und entgegen dem Uhrzeigersinn möglich und vorgesehen. Wie die Fig.2 und 3 zeigen, kämmt die Antriebswelle 34 mit Steuerzahnrädern 36,38, die jeweils mit zwei Steuernocken 40,42 versehen sind. Bei einer Anordnung des Antriebsgetriebes 32, wie in den Fig.2 und 3 dargestellt, ist es auch möglich, wie im folgenden dargelegt, mit nur einer Antriebseinheit in Form des Stellmotors 1 8 beide Seitenstützen 14 jeweils anzusteuern.However, 6 could also be provided for the opposite backrest area 12. The respective drive shaft 34 is driven via a corresponding gear, for example in the form of a gear transmission, by the associated electric servomotor 18. Counter-clockwise and counterclockwise drive directions are possible and provided. As FIGS. 2 and 3 show, the drive shaft 34 meshes with control gears 36, 38, which are each provided with two control cams 40, 42. With an arrangement of the drive gear 32, as shown in FIGS. 2 and 3, it is also possible, as explained below, to control both side supports 14 with only one drive unit in the form of the servomotor 1 8.
So ist der in Blickrichtung auf die Fig.2 und 3 gesehen obere Steuernocken 40 dafür vorgesehen, mit einem ersten Steuerbügel 44 zusammenzuwirken, wohingegen der zweite Steuerbügel 46 dem unteren Steuernocken 42 zugeord¬ net ist. Die beiden Steuerbügel 44,46 werden gemeinsam von der mittigen Schwenkachse 30 durchgriffen, wobei der erste Steuerbügel 44 an einander gegenüberliegenden Seiten Ausnehmungen aufweist, in die die Aufnahmen 48 für die Aufnahme einer nicht näher dargestellten Kopfstütze eingreifen. Werden über die Antriebswelle 34 die Steuerzahnräder 36,38 im Uhrzeigersinn ver¬ schwenkt, schiebt der Steuernocken 40 den ersten Steuerbügel 44 von seiner in der Fig.2 gezeigten Stellung in eine vorgeklappte Position gemäß der Darstel¬ lung nach der Fig.3. Ein Sitzbenutzer wird derart eine Abstützung auf der rechten Körperseite erhalten, sofern er mit seinem Fahrzeug eine Linkskurve durchfährt. In der entgegengesetzten Drehrichtung des Antriebsgetriebes 32 wird hingegen über den unteren Steuernocken 42 der zweite Steuerbügel 46 entsprechend angesteuert und vorgestellt. Bei einer nicht näher dargestellten Ausführungsform kann es vorgesehen sein, den einen Steuerbügel 44 und mithin den einen oberen Teil 20 der Seitenstütze 14 in Form der Schulteran¬ lage 22 zuzustellen und den gegenüberliegenden Bereich mit seiner Schulter¬ anlage 22 entgegen der vorstehend genannten Klapprichtung zurückzuklappen. Dies hat den Vorteil, daß beim Zurückneigen der einen Schulterfläche in einer Kurvenfahrt diese ebenso nach hinten abgestützt wird wie die voreilende Schulterpartie in ihrer Bewegung nach vorne.2 and 3, the upper control cam 40 is intended to cooperate with a first control bracket 44, whereas the second control bracket 46 is assigned to the lower control cam 42. The two control brackets 44, 46 are penetrated jointly by the central pivot axis 30, the first control bracket 44 having recesses on opposite sides, into which the receptacles 48 engage for receiving a headrest, not shown. If the control gears 36, 38 are pivoted clockwise via the drive shaft 34, the control cam 40 pushes the first control bracket 44 from its position shown in FIG. 2 to a folded-up position as shown in FIG. 3. A seat user will receive a support on the right side of the body if he or she makes a left turn with his vehicle. In the opposite direction of rotation of the drive gear 32, on the other hand, the second control bracket 46 is appropriately controlled and presented via the lower control cam 42. In an embodiment that is not shown in detail, it can be provided that one control bracket 44 and thus the one upper part 20 of the side support 14 in the form of the shoulder support 22 is folded in and the opposite area with its shoulder support 22 is folded back against the aforementioned folding direction. This has the advantage that when one shoulder surface is tilted back when cornering, it is supported just as much to the rear as the leading shoulder part in its forward movement.
Eine Rückstellung der jeweiligen Seitenstütze 14 kann über die Körperkraft des Sitzbenutzers bei zwangloser Anlage mit den Sitzpolsterteilen 50 erfolgen oder, wie dies in der Fig.4 dargestellt ist, über ein Federsystem 52 mit Zugfedern 54, die über Koppelstangen 56 miteinander verbunden sind sowie rückseitig mit den zuzustellenden Sitzpolsterteilen 50 insbesondere mit dem unteren Teil 24 der jeweiligen Seitenwange 14. Die unteren Teile 24 der Seitenstütze 14 können dabei mit ihren Sitzpolsterteilen 50 zum Inneren der Rückenlehne 10 hin an Schalen 58 des Kraftfahrzeugsitzes angeordnet sein, die nach Zusam¬ menziehen der jeweiligen Zugfeder 54 von ihrer in Blickrichtung auf die Fig.4 gesehen links ausgestellten Position in ihre Grundstellung zurückverfahren werden, wobei dann ein randseitiger freier Bereich der Schale 58 in einen Aufnahmeraum 60 des gehäuseartigen Sitzgrundgerüstes 62 eingreift.A resetting of the respective side support 14 can take place via the physical strength of the seat user in a casual contact with the seat cushion parts 50 or, as shown in FIG. 4, via a spring system 52 with tension springs 54 which are connected to one another via coupling rods 56 and on the back with the seat upholstery parts 50 to be delivered, in particular with the lower part 24 of the respective side cheek 14. The lower parts 24 of the side support 14 can be arranged with their seat upholstery parts 50 towards the inside of the backrest 10 on shells 58 of the motor vehicle seat which, after the respective tension spring has been contracted 54 are moved back to their basic position from their left position, as viewed in the direction of FIG. 4, in which case an edge-free area of the shell 58 then engages in a receiving space 60 of the housing-like seat frame 62.
Mit dem erfindungsgemäßen Kraftfahrzeugsitz ist es möglich, die seitlichen Abstützungen wirksam dafür einzusetzen, den Oberkörper insbesondere bei Querbeschleunigungen in der Fahrposition zu halten. Dabei ist dafür Sorge getragen, daß die auf den Körper einwirkenden Kräfte möglichst nahe der Angriffsstelle der Kraft aufgefangen werden. Bei Verlagerung der Abstützung, wie es bei den bekannten Lösungen der Fall ist, in fernere Körperbereiche, treten sonst höhere Muskel- und Gelenkbelastungen auf, die mit der vorlie¬ genden Lösung vermieden sind. With the motor vehicle seat according to the invention, it is possible to use the lateral supports effectively to keep the upper body in the driving position, particularly in the case of lateral accelerations. Care is taken to ensure that the forces acting on the body are absorbed as close as possible to the point of application of the force. When the support is shifted, as is the case with the known solutions, to more distant parts of the body, higher muscle and joint loads occur, which are avoided with the present solution.

Claims

P a t e n t a n s p r ü c h e P a t e n t a n s r u c h e
Kraftfahrzeugsitz mit zueinander bewegbar angeordneten, mittels einer Einstellvorrichtung (16) einstellbaren Seitenstützen (14) von Sitzkompo¬ nenten (12), dadurch gekennzeichnet, daß mittels einer Erfassungseinrich¬ tung der Bewegungszustand des Fahrzeuges erfaßbar ist, die die Einstell¬ vorrichtung (16) veranlaßt, über mindestens einen Aktuator (18) minde¬ stens eine Seitenstütze (14) derart anzusteuern, daß bei Querbeschleuni¬ gungen während des Fahrvorganges automatisch eine Entlastung des Sitzbenutzers erfolgt.Motor vehicle seat with side supports (14) of seat components (12) which are arranged to be movable relative to one another and can be adjusted by means of an adjusting device (16), characterized in that the state of motion of the vehicle which causes the adjusting device (16) can be detected by means of a detection device to control at least one side support (14) by means of at least one actuator (18) such that the seat user is automatically relieved in the event of lateral accelerations during the driving process.
Kraftfahrzeugsitz nach Anspruch 1 , dadurch gekennzeichnet, daß eine kontinuierliche Anpassung der jeweils hierfür vorgesehenen Seitenstütze (14) in Abhängigkeit von den auftretenden Fahrzeugbeschleunigungen und/oder von der Größe des Lenkradeinschlages und/oder der Fahrzeug¬ geschwindigkeit erfolgt und daß eine Rückführung der dahingehenden Seitenstütze (14) in eine Ausgangsstellung mittels der Einstellvorrichtung (1 6) oder eines Federspeichers vorgesehen ist.Motor vehicle seat according to claim 1, characterized in that there is a continuous adaptation of the respective side support (14) depending on the vehicle accelerations occurring and / or on the size of the steering wheel angle and / or the vehicle speed, and in that the relevant side support is returned ( 14) is provided in an initial position by means of the adjusting device (1 6) or a spring accumulator.
Kraftfahrzeugsitz nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die jeweilige Sitzkomponente aus dem Sitzteil oder der Rückenlehne (10) oder der Kopfstütze gebildet ist.Motor vehicle seat according to claim 1 or 2, characterized in that the respective seat component is formed from the seat part or the backrest (10) or the headrest.
Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 3, dadurch gekenn¬ zeichnet, daß die Erfassungseinrichtung Beschleunigungssensoren und/oder Bewegungssensoren insbesondere zur Erfassung der Beschleuni¬ gungskräfte am Fahrzeug bzw. des Lenkradeinschlages aufweist. 5. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 4, dadurch gekenn¬ zeichnet, daß der jeweilige Aktuator servoangetrieben ist, vorzugsweise aus einem Stellmotor (18), einem Stellarbeitszylinder, einem mecha¬ nischen Stellglied, wie einem Koppeltrieb, einem Nocken- und Exzenter¬ trieb, oder einem Federsystem, gebildet ist.Motor vehicle seat according to one of claims 1 to 3, characterized gekenn¬ characterized in that the detection device comprises acceleration sensors and / or motion sensors, in particular for detecting the acceleration forces on the vehicle or the steering wheel lock. 5. Motor vehicle seat according to one of claims 1 to 4, characterized gekenn¬ characterized in that the respective actuator is servo-driven, preferably from an actuator (18), an actuator cylinder, a mechanical actuator, such as a coupling drive, a cam and eccentric driven, or a spring system, is formed.
6. Kraftfahrzeugsitz nach einem der Ansprüche 3 bis 5, dadurch gekenn¬ zeichnet, daß bei einer Querbeschleunigung in der jeweiligen Kurven¬ richtung die Einstellvorrichtung (16) die in der Kurvenrichtung außen liegende Seitenstütze (14) von Sitzteil und/oder Rückenlehne (10) ansteu¬ ert.6. Motor vehicle seat according to one of claims 3 to 5, characterized gekenn¬ characterized in that at a lateral acceleration in the respective direction of the curve, the adjusting device (16) the side support (14) located in the outside of the curve of the seat part and / or backrest (10) controlled.
7. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 7, dadurch gekenn¬ zeichnet, daß die beiden Seitenstützen (14) der Rückenlehne (10) zweige¬ teilt sind, daß der obere Teil (20) der jeweiligen Seitenstütze (14) einer der Schulterkontur des Sitzbenutzers angepaßten Schulterkontur (22) aufweist und daß der untere Teil (24) der jeweiligen Seitenstütze (14) synchron der Bewegung des oberen Teils (20) nachfolgt oder daß das Verhältnis der größten zur kleinsten wirksamen Breite der Seitenstütze (14) einen Wert von mindestens 1 zu 1,5 einnimmt.7. Motor vehicle seat according to one of claims 1 to 7, characterized gekenn¬ characterized in that the two side supports (14) of the backrest (10) are divided in two that the upper part (20) of the respective side support (14) one of the shoulder contour of Seat user adapted shoulder contour (22) and that the lower part (24) of the respective side support (14) synchronously follows the movement of the upper part (20) or that the ratio of the largest to the smallest effective width of the side support (14) has a value of at least Takes 1 to 1.5.
8. Kraftfahrzeugsitz nach Anspruch 7, dadurch gekennzeichnet, daß jeder Seitenstütze (14) der Rückenlehne (10) zugeordnet eine Antriebseinheit (18) vorgesehen ist, die über ein Antriebsgetriebe (32) den unteren (24) und den oberen (20) Teil einer jeden Seitenstütze (14) ansteuert.8. Motor vehicle seat according to claim 7, characterized in that each side support (14) of the backrest (10) associated with a drive unit (18) is provided, the lower (24) and the upper (20) part of a via a drive gear (32) controls each side support (14).
9. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 8, dadurch gekenn¬ zeichnet, daß die Parameter der Anpassung durch den Sitzbenutzer indivi¬ duell einstellbar sind. 10. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 9, dadurch gekenn¬ zeichnet, daß die Einstellvorrichtung (16) von dem Sitzbenutzer zusätzlich zum automatischen Einstellvorgang ansteuerbar ist. 9. Motor vehicle seat according to one of claims 1 to 8, characterized gekenn¬ characterized in that the parameters of the adjustment by the seat user can be individually adjusted. 10. Motor vehicle seat according to one of claims 1 to 9, characterized gekenn¬ characterized in that the adjusting device (16) can be controlled by the seat user in addition to the automatic adjustment process.
EP97929181A 1996-06-20 1997-06-13 Motor vehicle seat Withdrawn EP0844940A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624587 1996-06-20
DE19624587A DE19624587A1 (en) 1996-06-20 1996-06-20 Seat
PCT/EP1997/003092 WO1997048571A1 (en) 1996-06-20 1997-06-13 Motor vehicle seat

Publications (1)

Publication Number Publication Date
EP0844940A1 true EP0844940A1 (en) 1998-06-03

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EP97928197A Withdrawn EP0842061A1 (en) 1996-06-20 1997-06-13 Motor vehicle seat

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US (2) US5975633A (en)
EP (2) EP0844940A1 (en)
DE (1) DE19624587A1 (en)
WO (2) WO1997048570A1 (en)

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Also Published As

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US5882060A (en) 1999-03-16
WO1997048571A1 (en) 1997-12-24
EP0842061A1 (en) 1998-05-20
US5975633A (en) 1999-11-02
WO1997048570A1 (en) 1997-12-24
DE19624587A1 (en) 1998-01-22

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