EP0842061A1 - Motor vehicle seat - Google Patents

Motor vehicle seat

Info

Publication number
EP0842061A1
EP0842061A1 EP97928197A EP97928197A EP0842061A1 EP 0842061 A1 EP0842061 A1 EP 0842061A1 EP 97928197 A EP97928197 A EP 97928197A EP 97928197 A EP97928197 A EP 97928197A EP 0842061 A1 EP0842061 A1 EP 0842061A1
Authority
EP
European Patent Office
Prior art keywords
seat
motor vehicle
vehicle seat
adjusting device
user
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Withdrawn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
EP97928197A
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 EP0842061A1 publication Critical patent/EP0842061A1/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Withdrawn legal-status Critical Current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 mutually movable seat components that can be adjusted by means of an adjusting device.
  • Such seats are known in a variety of embodiments.
  • A1 motor vehicle seats are known with seat components which can be adjusted by means of an adjusting device and which can be adapted to the body shape of the respective seat user when the vehicle is at a standstill.
  • These seat components which are set in a quasi-static state, retain their position once set when driving. In contrast, the position of the occupant changes when lateral or longitudinal accelerations occur. Because of the inertia of the respective seat user when cornering, his weight is shifted to the side further away from the center of the curve.
  • the object of the invention is to create a motor vehicle seat which, depending on the respective state of movement, effects a 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 move at least one of the seat components relative to the other seat components via individual actuators in such a way that the seat user is automatically relieved during the driving process takes place, there is a compensation of the inertia-related relative movements between the seat and the seat user, especially when acceleration forces occur in the longitudinal and transverse directions during the vehicle movement.
  • a detection device which causes the adjusting device to move at least one of the seat components relative to the other seat components via individual actuators in such a way that the seat user is automatically relieved during the driving process takes place
  • the motor vehicle seat according to the invention it is always possible to activate those seat components that are required to support the seat user against the influence of acceleration and thus to relieve them.
  • the other seat components can remain in their original position, do not restrict the respective seat user and do not hinder him when getting in and out.
  • the respective setting processes can be repeated depending on the driving condition.
  • a control unit preferably takes over the control of the setting device.
  • the seat shown in principle in FIG. 1 has a conventional seat part 10 and a backrest 12 that is adjustable in inclination for this purpose, which has a headrest 14 on its upper side, which is adjustable in height as well as in its inclination and possibly its longitudinal position , wherein the headrest 14 can be controlled independently of the backrest 12, but can also be integrated in one piece in this.
  • the respective seat components formed from the seat part 10, backrest 12 and headrest 14 can be individually adjusted by means of an adjusting device to be explained in more detail.
  • an acceleration sensor 16 shown as a black box, which forwards its measurement signals to an evaluation unit 18, also shown as a black box, which in turn controls the adjusting device for the seat components.
  • the control lines 20 required for this purpose between the evaluation unit 18 and the setting device are shown in a principle manner.
  • Both the acceleration sensor 16 and the Evaluation unit 18 can be integrated individually or together in the respective vehicle seat and, if necessary, detect the contact forces due to inertia when the respective seat user accelerates.
  • a sensor system not shown in more detail, can be used, which detects the steering wheel position and the speed, for example.
  • each adjustable seat component 10, 12, 14 are actuators or adjusting elements which are explained in more detail with reference to embodiments and which, as part of the adjusting device, make the adjustment depending on the movement state of the vehicle, preferably as a function of acceleration.
  • the relevant seat components 10, 12 are returned. 14 in an initial position by means of the adjusting device.
  • the individual actuators are servo-driven and are preferably composed of servomotors 22, actuating cylinders (not shown), mechanical actuators, such as coupling drives 24, cam and eccentric drives 26 or spring systems 28 with adjustable spring stiffness and / or adjusting chambers 30 of variable volume educated.
  • the setting elements or actuators can also carry out the respective setting pneumatically or hydraulically.
  • the adjusting device When adjusting chambers 30 of variable volume are used, the adjusting device must react quickly with regard to a change in volume so that the respective seat component can immediately counteract the acceleration force that occurs.
  • the maximum possible delivery movement the seat component towards the seat user is limited and can preferably be predefined individually.
  • An acceleration acts on the seat according to FIG. 1 and consequently on the seat user in the direction of arrow 32, as occurs, for example, when the associated motor vehicle is braked; but also as it can occur in a rearward crash, the relevant acceleration values are detected by the acceleration sensor 16 and passed on to the evaluation unit 18 as a control device and thus as part of the detection device. This then controls the individual actuators of the adjusting device via the control lines 20 in such a way that the seat part 10 is adjusted in the direction of the arrows 34 and 35 at the front upwards and at the rear downwards.
  • the backrest 12 is inclined together with the headrest 14 or independently of it in the direction of the arrow 36, the latter, as indicated by the arrow 38, being able to control an independent adjustment movement by means of the adjustment device.
  • the seat user is held securely in his seat in his optimal driving position, is supported accordingly and is therefore relieved of acceleration forces. Since the free path from the headrest 14 to the head of the seat user is reduced by the adjustment made, the so-called "rebound" of the head, which can be done with considerable speed, reduces the acceleration forces that occur and dangerous damage to the head and neck - Avoid and neck area.
  • the adjustment device referred to resets the seat components 10, 12 and 14 to their originally set position via the individual actuators. Regardless of this automatic, dynamic setting option for the seat components mentioned, the Possibility provided that the seat user can adjust the seat according to his own needs. If the seat components 10, 12 and 14 are to be subdivided in segments, there is also the possibility that the adjusting device causes the relevant segment parts (not shown) of the seat to be adjusted depending on the respective driving state in the sense of a fine adjustment.
  • the seat part 10 of a motor vehicle seat is described using an embodiment according to FIG. 2, in which the backrest (not shown) remains rigid and the seat part 10 relieves the load on the seat user when the associated vehicle is cornering.
  • the seat part 10 according to FIG. 2 has a shell-like, rigid seat part upholstery carrier 40 made of metal, on which the seat part upholstery 42 is supported with its individual segments.
  • the seat part 10 assembled in this way is part of a conventional seat part underframe 44, which allows the seat part 10 to be adjusted lengthways and vertically.
  • the seat part cushion support 40 is supported on its two longitudinal sides rearward on an engagement cam 46, which is arranged to be longitudinally displaceable along a rectilinear leaf spring 48, preferably made of plastic material.
  • the leaf spring 48 is articulated with its one end to a rocker body 50, which is connected via its ends 52 in a known and therefore not described in detail manner to the seat part underframe 44 and once to the seat part cushion support 40.
  • the swing arm arrangement 50 with leaf spring 48 and engaging cams 46 shown on the right in FIG. 2 is correspondingly provided for the opposite longitudinal side of the vehicle seat, but is omitted for the sake of simplicity.
  • a cam or eccentric drive 26, which interacts with the servomotor 22, is provided as individual actuators.
  • the cam or eccentric drive 26 has a control shaft 54, which can be driven by the servomotor 22 and which has a control wheel 56 at the end, in particular in the form of a gearwheel, which serves to drive eccentric cams 58, the end face of which has a control surface 60, in particular in the form of a further gearwheel , are provided.
  • the cams 58 act on the leaf springs 48.
  • the eccentric two cams 58 are arranged relative to one another in such a way that it is ensured that either the surface of the seat part runs essentially horizontally, also in the rear area, or that one or the other rear end alternately via the respective cam or eccentric drive 26 is raised or lowered.
  • a ball joint 62 is arranged in the front area of the seat, which is not only pivotable about a link rod 64 of the seat part lower frame 44, but rather can also be moved transversely to it. To initiate this movement, the ball joint 62 is connected to a pivot point 66 via an associated recess on the underside of the seat part cushion carrier 40.
  • the evaluation unit 18 via the respective electrical control line 20 is assigned either via acceleration sensors 16 for detecting the acceleration forces on the vehicle or by a motion sensor for detecting the steering wheel angle and / or the vehicle speed
  • Actuator 22 controls such that outside the middle of the curve, the rear edge-side end region of the seat part 10 is raised via the associated control surface 58 and the adjacent opposite edge-side region either remains in its position or is additionally lowered via the assigned control surface 58.
  • the front pivot point of the seat part 10 remains in its vertical position via the ball joint 62 and only the front edge region of the seat part 10 leading away from there executes a pivoting movement.
  • the seat part upholstery support 40 represents a variable shell
  • direct deformation of the seat shell and consequently of the seat part upholstery 42 is also possible via the individual actuators.
  • a differentiated control for the seat part 10 also results if the seat part cushion 42 is assembled with actuating chambers 30 of variable volume and these are filled or emptied with a medium, for example a fluid or gas, using a suitable setting device.
  • a correspondingly designed eccentric drive could also act on the respective leaf spring 48 in the longitudinal direction and thus change the spring stiffness in such a way that the desired acceleration-precise adaptations occur.
  • the motor vehicle seat described in FIG. 2 compensates for the inclinations via the opposite seat inclination of the seat part 10 and the lumbar region of the seat user is held in a straight line, so that there is increased comfort for the user.
  • the adjusting device according to the basic illustration according to FIG. 3 can also be formed from a thrust crank mechanism 72 with four-point bearing 74.
  • the individual actuators of this special coupling drive 24 are the coupling parts 76 which are pivotably arranged around the bearing points 74 and which can engage with their free ends, for example on the underside of the seat part 10, at its corners in this regard.
  • Spindles 78 which can be driven in translation serve as the drive for this special thrust crank mechanism.
  • a spring system designated as a whole by 28, is implemented with individual springs 80 arranged at the corners of the seat part cushion support 40 on its underside, which can be acted upon by a force F from the seat part 10.
  • a detection device again detects the state of movement of the vehicle and causes the adjusting device, this time via insertable wedges 82, to change the spring stiffness of the springs 80. If the spring stiffness of the individual springs 80 is increased as a function of the given acceleration states by pushing in, there is a lower lowering of the individual actuator under the respective load. In the initial state it is provided that the spring stiffness at the front edge of the seat is then lower than in the rear region of the seat part 10 due to the lower load.
  • the adjustment devices mainly relating to the seat part 10 above do not need to be limited to this, but rather can also be used additionally or alternatively for the backrest 12.
  • the motor vehicle seat according to the invention it is therefore possible for the first time to implement a dynamic adjustment for the seat user depending on the acceleration or movement state of the vehicle and thus to relieve him / her, while at the same time taking into account the cramped interior conditions in motor vehicles. If, for example, there are only adjustment processes for the seat part with the backrest remaining statically, it is possible to rotate the seat to relieve the load on the vehicle occupant without it or the vehicle seat bumping against door panels, B-pillars or tunnels.
  • mat-like pressure sensors that are the seat of the vehicle can record the movement-related seating condition of the seat user.

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 seat components (10, 12, 14) which are movable in relation to one another and adjustable by means of an adjuster. Because the state of movement of the vehicle can be detected by a detecting system, allowing the adjuster to move at least one of the seat components (10, 12, 14) relatively to the others via individual actuators (22, 24, 26, 28, 30) in such a way that the user of the seat is automatically eased during travel, a 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

Kraftfahrzeugsitz Motor vehicle seat
Die Erfindung betrifft einen Kraftfahrzeugsitz mit zueinander bewegbar ange¬ ordneten, mittels einer Einstellvorrichtung einstellbaren Sitzkomponenten.The invention relates to a motor vehicle seat with mutually movable seat components that can be adjusted by means of an adjusting device.
Dahingehende Sitze sind in einer Vielzahl von Ausführungsformen bekannt. So sind beispielsweise aus den DE 1 580 621 , DE 1 580 623 und DE 2 721 539 A1 Kraftfahrzeugsitze mit über eine Einsteilvorrichtung einstellbaren Sitzkompo¬ nenten bekannt, die bei Stillstand des Fahrzeuges an die Körperform des jewei¬ ligen Sitzbenutzers angepaßt werden können. Diese in quasistatischem Zustand eingestellten Sitzkomponenten behalten ihre einmal eingestellte Stellung im Fahrbetrieb. Die Position des Insassen dagegen ändert sich beim Auftreten von Seiten- oder Längsbeschleunigungen. So findet aufgrund der Massenträgheit des jeweiligen Sitzbenutzers bei Kurvenfahrten eine Verlagerung seines Gewichtes auf die dem Kurvenmittelpunkt weiter abgewandte Seite statt. Dies hat zum einen eine tiefere Einfederung des Sitzbenutzers in das Sitzpolster, zum ande¬ ren eine zusätzliche Verdrängung von Körpergeweben auf dieser Seite zur Folge. Beides begünstigt eine Neigung der Wirbelsäule weg vom Kurvenmittel¬ punkt. Bei nichtniveauregulierten Fahrgestellen neigt sich auch das Fahrgestell in diese Richtung. Da der Sitzbenutzer, insbesondere der Fahrzeuglenker, aus Sicherheitsgründen seine Relativlage zu Lenkrad, Spiegeln, Türen, Gurt oder Pedalen nicht deutlich ändern darf, muß er über teilweise erhebliche Muskelan¬ spannungen und schädliche Biegungen der Wirbelsäule um die Fahrzeuglängs¬ achse versuchen, seine Position zu halten.Such seats are known in a variety of embodiments. For example, from DE 1 580 621, DE 1 580 623 and DE 2 721 539 A1 motor vehicle seats are known with seat components which can be adjusted by means of an adjusting device and which can be adapted to the body shape of the respective seat user when the vehicle is at a standstill. These seat components, which are set in a quasi-static state, retain their position once set when driving. In contrast, the position of the occupant changes when lateral or longitudinal accelerations occur. Because of the inertia of the respective seat user when cornering, his weight is shifted to the side further away from the center of the curve. On the one hand, this has a deeper deflection of the seat user into the seat cushion, and on the other hand, an additional displacement of body tissues on this side Episode. Both favor an inclination of the spine away from the center of the curve. In the case of non-level-regulated chassis, the chassis also tilts in this direction. Since the seat user, in particular the vehicle driver, must not change his position relative to the steering wheel, mirrors, doors, belt or pedals clearly for safety reasons, he has to try to position himself by sometimes considerable muscle tension and harmful bending of the spine around the vehicle's longitudinal axis hold.
Als Abhilfe ist hierbei schon vorgeschlagen worden, stark ausgeprägte Seiten¬ wangen an Sitzkissen und Lehne sowie harte Sitzpolster und -federungen zur Abstützung zu schaffen. Diese zusätzlichen Abstützmöglichkeiten können einen Beitrag zur Minderung der Muskelanspannung im Fahrbetrieb leisten. Eine deutliche Minderung der Wirbelsäulenbiegung hingegen vermögen sie nicht zu bewirken. Darüber hinaus mindert ein hartes Sitzpolster die Schwingungsisola- tionswirkung des Fahrzeugsitzes. Auch das Ein- und Aussteigen wird behindert. Die Polsteroberflächen der Seitenwangen sind extremen Beanspruchungen aus¬ gesetzt und bei Geradeausfahrt sind Bewegungsfreiheit und Feuchteabtransport durch den paßengen Sitz deutlich reduziert.As a remedy, it has already been proposed to create strongly pronounced side bolsters on the seat cushion and backrest as well as hard seat cushions and springs for support. These additional support options can help to reduce muscle tension while driving. However, they are unable to bring about a significant reduction in the bending of the spine. In addition, a hard seat cushion reduces the vibration isolation effect of the vehicle seat. Boarding and alighting are also hindered. The upholstery surfaces of the side panels are exposed to extreme stresses and when driving straight ahead, freedom of movement and moisture removal are significantly reduced due to the tight fit.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen Kraftfahrzeugsitz zu schaffen, der in Abhängigkeit des jeweili¬ gen Bewegungszustandes eine dynamische Sitzanpassung für den Sitzbenutzer bewirkt und mithin diesen entlastet. Eine dahingehende Aufgabe löst ein Kraft¬ fahrzeugsitz mit den Merkmalen des Anspruches 1 .Based on this prior art, the object of the invention is to create a motor vehicle seat which, depending on the respective state of movement, effects a 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 Anspruches 1 mittels einer Erfassungseinrichtung der Bewegungszustand des Fahrzeuges erfaßbar ist, die die Einstellvorrichtung veranlaßt, über Einzelaktuatoren mindestens eine der Sitzkomponenten derart relativ zu den anderen Sitzkomponenten zu bewegen, daß während des Fahrvorganges automatisch eine Entlastung des Sitzbenutzers erfolgt, kommt es zu einem Ausgleich der trägheitsbedingten Relativbewegun¬ gen zwischen Sitz und Sitzbenutzer, insbesondere bei Auftreten von Beschleu¬ nigungskräften in Längs- und Querrichtung bei der Fahrzeugbewegung. Es kommt mithin zu einer beschleunigungsabhängigen Einstellung der Sitzkontur mit einer geringen Änderung der sog. Komfortwinkel und es wird eine gute Seitenführung ohne Verschlechterung des Sitzklimas oder Einschränkung der Bewegungsfreiheit auch bei konstanter Fahrgeschwindigkeit erreicht.Characterized in 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 move at least one of the seat components relative to the other seat components via individual actuators in such a way that the seat user is automatically relieved during the driving process takes place, there is a compensation of the inertia-related relative movements between the seat and the seat user, especially when acceleration forces occur in the longitudinal and transverse directions during the vehicle movement. There is therefore an acceleration-dependent adjustment of the seat contour with a slight change in the so-called comfort angle, and good lateral guidance is achieved without a deterioration in the seat climate or restriction of freedom of movement even at constant driving speed.
Mit dem erfindungsgemäßen Kraftfahrzeugsitz ist es möglich, immer diejenigen Sitzkomponenten zu aktivieren, die benötigt werden, um entgegen dem Be¬ schleunigungseinfluß den Sitzbenutzer abzustützen und mithin zu entlasten. Die sonstigen Sitzkomponenten können in ihrer ursprünglichen Lage verblei¬ ben, beengen auch nicht den jeweiligen Sitzbenutzer und behindern ihn nicht beim Ein- und Aussteigen. Es kommt mithin zu einer dynamischen, kontinuierli¬ chen Sitzanpassung in Abhängigkeit der auftretenden Beschleunigungskräfte, wobei für den normalen Fahrzustand, der sich über vorgebbare Schwellenwerte definieren läßt, die einstellbaren .Sitzkomponenten in ihre Ausgangslage zurück¬ kehren und dann einen üblichen Kraftfahrzeugsitz ausbilden. Die jeweiligen Einstellvorgänge sind in Abhängigkeit des Fahrzustandes wiederholbar. Vor¬ zugsweise übernimmt eine Steuereinheit die Ansteuerung der Einstellvorrich¬ tung. Mit dem erfindungsgemäßen Kraftfahrzeugsitz ist der Sitzbenutzer von den Beschleunigungskräften und den daraus resultierenden Bewegungen von Fahrzeug- und Sitzkonstruktion sowie Körpernachgiebigkeiten durch eine Änderung der Sitzkontur entlastet.With the motor vehicle seat according to the invention, it is always possible to activate those seat components that are required to support the seat user against the influence of acceleration and thus to relieve them. The other seat components can remain in their original position, do not restrict the respective seat user and do not hinder him when getting in and out. There is therefore a dynamic, continuous seat adjustment as a function of the acceleration forces which occur, the adjustable seat components returning to their starting position for the normal driving state, which can be defined via predeterminable threshold values, and then forming a conventional motor vehicle seat. The respective setting processes can be repeated depending on the driving condition. A control unit preferably takes over the control of the setting device. With the motor vehicle seat according to the invention, the seat user is relieved of the acceleration forces and the resulting movements of the vehicle and seat construction as well as body compliance by changing the seat contour.
Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Kraftfahrzeugsitzes sind Gegenstand der Unteransprüche.Further advantageous embodiments of the motor vehicle seat according to the invention are the subject of the dependent claims.
Im folgenden wird der erfindungsgemäße Kraftfahrzeugsitz anhand verschiede¬ ner Ausführungsbeispiele gemäß der Zeichnung näher erläutert. Es zeigen in prinzipieller und nicht maßstäblicher Darstellung dieThe motor vehicle seat according to the invention is explained in more detail below on the basis of various exemplary embodiments according to the drawing. They show the principle and not to scale
Fig.1 einen Kraftfahrzeugsitz mit der Möglichkeit der Beschleu¬ nigungskompensation;1 shows a motor vehicle seat with the possibility of acceleration compensation;
Fig.2 in der Art einer Zusammenbauzeichnung eiηe erste Aus¬ führungsform des Kraftfahrzeugsitzes mit ansteuerbarem Sitzteil;2 in the manner of an assembly drawing, a first embodiment of the motor vehicle seat with a controllable seat part;
Fig.3 und 4 geänderte Ausführungsformen des beanspruchten Kraft- fahrzeugsitzes.3 and 4 modified embodiments of the claimed motor vehicle seat.
Der in der Fig.1 prinzipiell dargestellte Sitz weist ein übliches Sitzteil 10 auf sowie eine hierzu in der Neigung einstellbare Rückenlehne 12, die auf ihrer Oberseite eine Kopfstütze 14 aufweist, die sowohl in der Höhe als auch in ihrer Neigung und gegebenenfalls ihrer Längsposition einstellbar ist, wobei die Kopfstütze 14 unabhängig von der Lehne 12 ansteuerbar ist, aber auch in dieser einstückig integriert sein kann. Die aus Sitzteil 10, Rückenlehne 12 und Kopfstütze 14 gebildeten jeweiligen Sitzkomponenten sind mittels einer noch näher zu erläuternden Einstellvorrichtung individuell einstellbar.The seat shown in principle in FIG. 1 has a conventional seat part 10 and a backrest 12 that is adjustable in inclination for this purpose, which has a headrest 14 on its upper side, which is adjustable in height as well as in its inclination and possibly its longitudinal position , wherein the headrest 14 can be controlled independently of the backrest 12, but can also be integrated in one piece in this. The respective seat components formed from the seat part 10, backrest 12 and headrest 14 can be individually adjusted by means of an adjusting device to be explained in more detail.
Zur Erfassung der auf den Kraftfahrzeugsitz einwirkenden Kräfte, insbesondere in Form von Beschleunigungskräften, dient ein als Blackbox dargestellter Beschleunigungssensor 1 6, der seine Meßsignale an eine ebenfalls als Blackbox dargestellte Auswerteeinheit 18 weiterleitet, die wiederum die Einstellvorrich¬ tung für die Sitzkomponenten ansteuert. Die hierfür benötigten Steuerleitungen 20 zwischen der Auswerteeinheit 18 und der Einstellvorrichtung sind in prinzi¬ pieller Weise dargestellt. Sowohl der Beschleunigungssensor 16 als auch die Auswerteeinheit 18 können einzeln oder zusammen im jeweiligen Fahrzeugsitz integriert sein und gegebenenfalls die trägheitsbedingten Anpreßkräfte bei Auftreten einer Beschleunigung durch den jeweiligen Sitzbenutzer im Sitz erfassen. Anstelle des Beschleunigungssensors 16 kann auch eine nicht näher dargestellte Sensorik treten, die beispielsweise die Lenkradstellung und die Geschwindigkeit erfaßt.To detect the forces acting on the motor vehicle seat, in particular in the form of acceleration forces, an acceleration sensor 16, shown as a black box, is used, which forwards its measurement signals to an evaluation unit 18, also shown as a black box, which in turn controls the adjusting device for the seat components. The control lines 20 required for this purpose between the evaluation unit 18 and the setting device are shown in a principle manner. Both the acceleration sensor 16 and the Evaluation unit 18 can be integrated individually or together in the respective vehicle seat and, if necessary, detect the contact forces due to inertia when the respective seat user accelerates. Instead of the acceleration sensor 16, a sensor system, not shown in more detail, can be used, which detects the steering wheel position and the speed, for example.
Jeder einstellbaren Sitzkomponente 10,12,14 zugeordnet sind Aktuatoren oder Einstellelemente vorhanden, die noch näher anhand von Ausführungsformen erläutert werden und die als Teil der Einstellvorrichtung die Einstellung abhän¬ gig vom Bewegungszustand des Fahrzeuges vorzugsweise beschleunigungs¬ abhängig vornehmen. Neben einer kontinuierlichen Anpassung der jeweils hierfür vorgesehenen Sitzkomponente 10,1 2, 14 in Abhängigkeit von den auf¬ tretenden Fahrzeugbeschleunigungen und/oder von der Größe des Lenkradein¬ schlages und/oder der Geschwindigkeit erfolgt eine Rückführung der dahinge¬ henden Sitzkomponente 10,12,14 in eine Ausgangsstellung mittels der Einstell¬ vorrichtung.Associated with each adjustable seat component 10, 12, 14 are actuators or adjusting elements which are explained in more detail with reference to embodiments and which, as part of the adjusting device, make the adjustment depending on the movement state of the vehicle, preferably as a function of acceleration. In addition to a continuous adjustment of the seat components 10, 2, 14 provided for this purpose, depending on the vehicle accelerations occurring and / or the size of the steering wheel lock and / or the speed, the relevant seat components 10, 12 are returned. 14 in an initial position by means of the adjusting device.
Die Einzelaktuatoren sind servoangetrieben und sind vorzugsweise aus Stell¬ motoren 22, Stellarbeitszylindern (nicht dargestellt), mechanischen Stellglie¬ dern, wie Koppeltrieben 24, Nocken- und Exzentertrieben 26 oder Federsyste¬ men 28 mit einstellbarer Federsteifigkeit und/oder Stellkammern 30 veränderli¬ chen Volumens gebildet. Neben einem elektrischen Antriebskonzept für die Einstellvorrichtung können die Einstellelemente oder Aktuatoren auch pneuma¬ tisch oder hydraulisch die jeweilige Einstellung vornehmen. Beim Einsatz von Stellkammern 30 veränderlichen Volumens muß die Einstellvorrichtung ein rasches Reagieren im Hinblick auf eine Volumenänderung erreichen, damit die jeweilige Sitzkomponente umgehend der auftretenden Beschleunigungskraft kompensierend entgegenwirken kann. Die maximal mögliche Zustellbewegung der Sitzkomponente auf den Sitzbenutzer zu ist dabei begrenzt und vorzugs¬ weise individuell vorgebbar.The individual actuators are servo-driven and are preferably composed of servomotors 22, actuating cylinders (not shown), mechanical actuators, such as coupling drives 24, cam and eccentric drives 26 or spring systems 28 with adjustable spring stiffness and / or adjusting chambers 30 of variable volume educated. In addition to an electrical drive concept for the setting device, the setting elements or actuators can also carry out the respective setting pneumatically or hydraulically. When adjusting chambers 30 of variable volume are used, the adjusting device must react quickly with regard to a change in volume so that the respective seat component can immediately counteract the acceleration force that occurs. The maximum possible delivery movement the seat component towards the seat user is limited and can preferably be predefined individually.
Wirkt auf den Sitz nach der Fig.1 und mithin auf den Sitzbenutzer in Richtung des Pfeiles 32 eine Beschleunigung ein, wie sie beispielsweise entsteht, wenn das zugehörige Kraftfahrzeug abgebremst wird; aber auch wie sie bei einem rückwärtigen Crash auftreten kann, werden die dahingehenden Be¬ schleunigungswerte von dem Beschleunigungssensor 16 erfaßt und an die Auswerteeinheit 18 als Steuerungseinrichtung und mithin als Teil der Erfas¬ sungseinrichtung weitergegeben. Diese steuert dann über die Steuerleitungen 20 die Einzelaktuatoren der Einstellvorrichtung derart an, daß in Richtung der Pfeile 34 und 35 das Sitzteil 10 vorne nach oben und hinten nach unten einge¬ stellt wird. Gleichzeitig wird in Richtung des Pfeiles 36 die Rückenlehne 12 zusammen mit der Kopfstütze 14 oder unabhängig von dieser nach vorne geneigt, wobei letztere, wie durch den Pfeil 38 angedeutet, eine eigenständige Einstellbewegung angesteuert über die Einstellvorrichtung vornehmen kann. Hierdurch wird der Sitzbeπutzer in seiner optimalen Fahrposition sicher im Sitz gehalten, von diesem entsprechend abgestützt und mithin von Be¬ schleunigungskräften entlastet. Da sich der freie Weg von der Kopfstütze 14 zum Kopf des Sitzbenutzers durch die vorgenommene Einstellung verringert, sind beim sogenannten "Rebound" des Kopfes, was mit erheblicher Geschwin¬ digkeit erfolgen kann, die auftretenden Beschleunigungskräfte reduziert und gefährliche Schädigungen im Kopf- sowie im Hals- und Nackenbereich vermie¬ den.An acceleration acts on the seat according to FIG. 1 and consequently on the seat user in the direction of arrow 32, as occurs, for example, when the associated motor vehicle is braked; but also as it can occur in a rearward crash, the relevant acceleration values are detected by the acceleration sensor 16 and passed on to the evaluation unit 18 as a control device and thus as part of the detection device. This then controls the individual actuators of the adjusting device via the control lines 20 in such a way that the seat part 10 is adjusted in the direction of the arrows 34 and 35 at the front upwards and at the rear downwards. At the same time, the backrest 12 is inclined together with the headrest 14 or independently of it in the direction of the arrow 36, the latter, as indicated by the arrow 38, being able to control an independent adjustment movement by means of the adjustment device. As a result, the seat user is held securely in his seat in his optimal driving position, is supported accordingly and is therefore relieved of acceleration forces. Since the free path from the headrest 14 to the head of the seat user is reduced by the adjustment made, the so-called "rebound" of the head, which can be done with considerable speed, reduces the acceleration forces that occur and dangerous damage to the head and neck - Avoid and neck area.
Wird der Beschleunigungseinfluß weggenommen, was über den Beschleuni¬ gungssensor 16 gleichfalls erfaßbar ist, stellt die angesprochene Einstellvorrich¬ tung über die Einzelaktuatoren die Sitzkomponenten 10,12 und 14 in ihre ursprünglich eingestellte Lage zurück. Unabhängig von dieser automatischen, dynamischen Einstellmöglichkeit der angesprochenen Sitzkomponenten ist die Möglichkeit vorgesehen, daß der Sitzbenutzer den Sitz nach seinen eigenen Bedürfnissen einstellen kann. Sofern die Sitzkomponenten 10,12 und 14 seg¬ mentweise unterteilt sein sollten, besteht auch die Möglichkeit, daß die Einstell¬ vorrichtung die Einstellung der dahingehenden Segmentteile (nicht dargestellt) des Sitzes abhängig vom jeweiligen Fahrzustand im Sinne einer Feineinstellung veranlaßt.If the influence of acceleration is removed, which can also be detected by the acceleration sensor 16, the adjustment device referred to resets the seat components 10, 12 and 14 to their originally set position via the individual actuators. Regardless of this automatic, dynamic setting option for the seat components mentioned, the Possibility provided that the seat user can adjust the seat according to his own needs. If the seat components 10, 12 and 14 are to be subdivided in segments, there is also the possibility that the adjusting device causes the relevant segment parts (not shown) of the seat to be adjusted depending on the respective driving state in the sense of a fine adjustment.
Im folgenden wird anhand einer Ausführungsform nach der Fig.2 das Sitzteil 10 eines nicht näher dargestellten Kraftfahrzeugsitzes beschrieben, bei dem die Rückenlehne (nicht dargestellt) starr bleibt und das Sitzteil 10 eine Entlastung des Sitzbenutzers erzielt, wenn das zugehörige Fahrzeug eine Kurve durchfährt.In the following, the seat part 10 of a motor vehicle seat, not shown, is described using an embodiment according to FIG. 2, in which the backrest (not shown) remains rigid and the seat part 10 relieves the load on the seat user when the associated vehicle is cornering.
Das Sitzteil 10 nach der Fig.2 weist in üblicher Bauart einen schalenartigen, starren Sitzteilpolsterträger 40 aus Metall auf, worauf sich das Sitzteilpolster 42 mit seinen Einzelsegmenten abstützt. Das derart zusammengesetzte Sitzteil 10 ist Bestandteil eines üblichen Sitzteiluntergestells 44, welches eine Längs- und Höheneinstellung des Sitzteils 10 erlaubt. Der Sitzteil polsterträger 40 stützt sich entlang seinen beiden Längsseiten rückwärtig auf jeweils einem Eingreifnocken 46 ab, der längsverschiebbar entlang einer geradlinig verlaufenden Blattfeder 48 vorzugsweise aus Kunststoffmaterial angeordnet ist. Die Blattfeder 48 ist mit ihrem einen Ende an einem Schwingenkörper 50 angelenkt, der über seine Enden 52 in bekannter und mithin nicht näher beschriebener Weise einmal mit dem Sitzteiluntergestell 44 und einmal mit dem Sitzteilpolsterträger 40 verbun¬ den ist. Die in Blickrichtung auf die Fig.2 rechts dargestellte Schwingenanord¬ nung 50 mit Blattfeder 48 und Eingreifnocken 46 ist für die gegenüberliegende Längsseite des Fahrzeugsitzes entsprechend vorgesehen, aber der einfacheren Darstellung wegen weggelassen.The seat part 10 according to FIG. 2 has a shell-like, rigid seat part upholstery carrier 40 made of metal, on which the seat part upholstery 42 is supported with its individual segments. The seat part 10 assembled in this way is part of a conventional seat part underframe 44, which allows the seat part 10 to be adjusted lengthways and vertically. The seat part cushion support 40 is supported on its two longitudinal sides rearward on an engagement cam 46, which is arranged to be longitudinally displaceable along a rectilinear leaf spring 48, preferably made of plastic material. The leaf spring 48 is articulated with its one end to a rocker body 50, which is connected via its ends 52 in a known and therefore not described in detail manner to the seat part underframe 44 and once to the seat part cushion support 40. The swing arm arrangement 50 with leaf spring 48 and engaging cams 46 shown on the right in FIG. 2 is correspondingly provided for the opposite longitudinal side of the vehicle seat, but is omitted for the sake of simplicity.
Als Einzelaktuatoren ist ein Nocken- oder Exzentertrieb 26 vorgesehen, der mit dem Stellmotor 22 zusammenwirkt. Der Nocken- oder Exzentertrieb 26 weist eine Steuerwelle 54 auf, die von dem Stellmotor 22 antreibbar ist und die endseitig jeweils ein Steuerrad 56, insbesondere in Form eines Zahnrades, aufweist, das dem Antrieb von exzentrischen Nocken 58 dient, die stirnseitig mit einer Steuerfläche 60, insbesondere in Form eines weiteren Zahnrades, versehen sind. Die Nocken 58 wirken auf die Blattfedern 48 ein. Die exzen¬ trischen beiden Nocken 58 sind derart zueinander angeordnet, daß gewähr¬ leistet ist, daß entweder die Sitzteiloberfläche im wesentlichen horizontal verläuft, auch im rückwärtigen Bereich, oder daß abwechselnd das eine oder das andere hintere Ende über den jeweiligen Nocken- oder Exzentertrieb 26 angehoben bzw. abgesenkt wird.A cam or eccentric drive 26, which interacts with the servomotor 22, is provided as individual actuators. The cam or eccentric drive 26 has a control shaft 54, which can be driven by the servomotor 22 and which has a control wheel 56 at the end, in particular in the form of a gearwheel, which serves to drive eccentric cams 58, the end face of which has a control surface 60, in particular in the form of a further gearwheel , are provided. The cams 58 act on the leaf springs 48. The eccentric two cams 58 are arranged relative to one another in such a way that it is ensured that either the surface of the seat part runs essentially horizontally, also in the rear area, or that one or the other rear end alternately via the respective cam or eccentric drive 26 is raised or lowered.
Um die Drehung des Sitzteilpolsterträgers 40 zu unterstützen, ist im vorderen Bereich des Sitzes ein Kugelgelenk 62 angeordnet, das nicht nur um eine Anlenkstange 64 des Sitzteiluntergestells 44 schwenkbar, sondern vielmehr auch in Richtung quer dazu bewegbar ist. Zur Einleitung dieser Bewegung ist das Kugelgelenk 62 mit einer Anlenkstelle 66 über eine zugeordnete Ausneh¬ mung an der Unterseite des Sitzteilpolsterträgers 40 mit diesem verbunden.In order to support the rotation of the seat part cushion support 40, a ball joint 62 is arranged in the front area of the seat, which is not only pivotable about a link rod 64 of the seat part lower frame 44, but rather can also be moved transversely to it. To initiate this movement, the ball joint 62 is connected to a pivot point 66 via an associated recess on the underside of the seat part cushion carrier 40.
Bei einer üblichen Kurvenfahrt des Fahrzeuges ist nun vorgesehen, daß entwe¬ der über Beschleunigungssensoren 1 6 zur Erfassung der Beschleunigungskräfte am Fahrzeug oder durch einen Bewegungssensor zur Erfassung des Lenkradein¬ schlages und/oder der Fahrzeuggeschwindigkeit die Auswerteeinheit 18 über die jeweils elektrische Steuerleitung 20 den zugeordneten Stellmotor 22 derart ansteuert, daß außerhalb der Kurvenmitte der hintere randseitige Endbereich des Sitzteils 10 über die zugeordnete Steuerfläche 58 angehoben wird und der benachbart gegenüberliegende randseitige Bereich über die zugeordnete Steuer¬ fläche 58 entweder in seiner Lage verbleibt oder zusätzlich abgesenkt wird. Der vordere Drehpunkt des Sitzteils 10 hingegen verbleibt über das Kugelge¬ lenk 62 in seiner vertikalen Lage und nur der von dort wegführende vordere Randseitenbereich des Sitzteils 10 führt eine Schwenkbewegung aus. Sofern der Sitzteilpolsterträger 40 eine variable Schale darstellt, ist auch eine unmittelbare Verformung der Sitzschale und mithin des Sitzteilpolsters 42 über die Einzelaktuatoren möglich. Eine dahingehende differenzierte Ansteuerung für das Sitzteil 10 ergibt sich auch, wenn man das Sitzteilpolster 42 mit Stellkam¬ mern 30 veränderlichen Volumens zusammensetzt und diese über eine geeig¬ nete Einstellvorrichtung mit einem Medium, beispielsweise einem Fluid oder Gas, befüllt oder entleert. Neben einem unmittelbaren Ansteuern des Schwin¬ genkörpers 50 könnte ein entsprechend ausgebildeter Exzentertrieb (nicht dargestellt) auch in Längsrichtung der jeweiligen Blattfeder 48 an dieser an¬ greifen und mithin die Federsteifigkeit derart ändern, daß es zu den ge¬ wünschten beschleunigungspräzisierten Anpassungen kommt. Mit dem in der Fig.2 beschriebenen Kraftfahrzeugsitz ist ein Ausgleich der Neigungen über die entgegengesetzte Sitzneigung des Sitzteils 10 erreicht und der Lendenwirbel¬ bereich des Sitzbenutzers geradlinig gehalten, so daß sich ein erhöhter Komfort für diesen einstellt.When the vehicle is cornering normally, it is provided that the evaluation unit 18 via the respective electrical control line 20 is assigned either via acceleration sensors 16 for detecting the acceleration forces on the vehicle or by a motion sensor for detecting the steering wheel angle and / or the vehicle speed Actuator 22 controls such that outside the middle of the curve, the rear edge-side end region of the seat part 10 is raised via the associated control surface 58 and the adjacent opposite edge-side region either remains in its position or is additionally lowered via the assigned control surface 58. The front pivot point of the seat part 10, on the other hand, remains in its vertical position via the ball joint 62 and only the front edge region of the seat part 10 leading away from there executes a pivoting movement. If the seat part upholstery support 40 represents a variable shell, direct deformation of the seat shell and consequently of the seat part upholstery 42 is also possible via the individual actuators. A differentiated control for the seat part 10 also results if the seat part cushion 42 is assembled with actuating chambers 30 of variable volume and these are filled or emptied with a medium, for example a fluid or gas, using a suitable setting device. In addition to direct actuation of the oscillating body 50, a correspondingly designed eccentric drive (not shown) could also act on the respective leaf spring 48 in the longitudinal direction and thus change the spring stiffness in such a way that the desired acceleration-precise adaptations occur. The motor vehicle seat described in FIG. 2 compensates for the inclinations via the opposite seat inclination of the seat part 10 and the lumbar region of the seat user is held in a straight line, so that there is increased comfort for the user.
Anstelle der vorbezeichneten Lösungen kann die Einstellvorrichtung gemäß der prinzipiellen Darstellung nach der Fig.3 auch aus einem Schubkurbelgetriebe 72 mit Vierpunktlagerung 74 gebildet sein. Als Einzelaktuatoren dieses speziel¬ len Koppeltriebes 24 dienen die schwenkbar um die Lagerstellen 74 angeord¬ neten Koppelteile 76, die mit ihren freien Enden beispielsweise an der Unter¬ seite des Sitzteils 10 an seinen diesbezüglichen Ecken angreifen können. Als Antrieb für dieses spezielle Schubkurbelgetriebe dienen translatorisch antreibba¬ re Spindeln 78. Mit der dahingehenden Lösung ist es auch möglich, das Sitzteil 10 gleichzeitig entlang einer Längsseite auf dieselbe horizontale Ebene anzuhe¬ ben und umgekehrt auf der gegenüberliegenden Seite abzusenken. Es ist damit eine Kippbewegung um eine in ihrer Höhe gleichbleibende Längsachse des Sitzteils 10 möglich, wohingegen bei der Ausführungsform nach der Fig.2 die Längsachse in Richtung der Fahrzeugpedale gegenüber einer fiktiven horizonta¬ len Ebene gekippt ist.Instead of the aforementioned solutions, the adjusting device according to the basic illustration according to FIG. 3 can also be formed from a thrust crank mechanism 72 with four-point bearing 74. The individual actuators of this special coupling drive 24 are the coupling parts 76 which are pivotably arranged around the bearing points 74 and which can engage with their free ends, for example on the underside of the seat part 10, at its corners in this regard. Spindles 78 which can be driven in translation serve as the drive for this special thrust crank mechanism. With this solution, it is also possible to simultaneously lift the seat part 10 along one long side to the same horizontal plane and vice versa to lower it on the opposite side. A tilting movement about a constant longitudinal axis of the seat part 10 is thus possible, whereas in the embodiment according to FIG Longitudinal axis is tilted in the direction of the vehicle pedals with respect to a fictitious horizontal plane.
Bei der Ausführungsform nach der Fig.4 ist ein als Ganzes mit 28 bezeichnetes Federsystem realisiert mit an den Ecken des Sitzteilpolsterträgers 40 auf seiner Unterseite angeordneten Einzelfedern 80, die vom Sitzteil 10 her mit einer Kraft F beaufschlagbar sind. Auch bei dieser Ausführungsform erfaßt wiederum eine Erfassungseinrichtung den Bewegungszustand des Fahrzeuges und veran¬ laßt die Einstellvorrichtung, diesmal über einschiebbare Keile 82, die Feder- steifigkeit der Federn 80 zu ändern. Wird die Federsteifigkeit der Einzelfedern 80 in Abhängigkeit der gegebenen Beschleunigungszustände durch Einschieben vergrößert, ergibt sich eine geringere Absenkung des Einzelaktuators unter der jeweiligen Belastung. Im Ausgangszustand ist dabei vorgesehen, daß die Feder¬ steifigkeit an der Sitzvorderkante aufgrund der geringeren Belastung dann geringer als im rückwärtigen Bereich des Sitzteils 10 ist.In the embodiment according to FIG. 4, a spring system, designated as a whole by 28, is implemented with individual springs 80 arranged at the corners of the seat part cushion support 40 on its underside, which can be acted upon by a force F from the seat part 10. In this embodiment too, a detection device again detects the state of movement of the vehicle and causes the adjusting device, this time via insertable wedges 82, to change the spring stiffness of the springs 80. If the spring stiffness of the individual springs 80 is increased as a function of the given acceleration states by pushing in, there is a lower lowering of the individual actuator under the respective load. In the initial state it is provided that the spring stiffness at the front edge of the seat is then lower than in the rear region of the seat part 10 due to the lower load.
Die vorstehend überwiegend auf das Sitzteil 10 bezogenen Einstellvorrichtun- gen brauchen nicht hierauf beschränkt zu sein, sondern können vielmehr auch für die Rückenlehne 12 zusätzlich oder alternativ zum Einsatz kommen. Mit dem erfindungsgemäßen Kraftfahrzeugsitz ist es mithin erstmalig möglich, in Abhängigkeit des Beschleunigungs- oder Bewegungszustandes des Fahrzeuges eine dynamische Anpassung für den Sitzbenutzer zu realisieren und diesen damit zu entlasten, wobei gleichzeitig die heute beengten Innenraumverhält- nisse in Kraftfahrzeugen berücksichtigt sind. Kommt es beispielsweise nur zu Einstellvorgängen des Sitzteils bei statisch verbleibender Rückenlehne, ist eine Sitzverdrehung zur Entlastung des Fahrzeuginsassen möglich, ohne daß dieser oder der Fahrzeugsitz an Türverkleidungen, B-Säulen oder Tunnel anstößt.The adjustment devices mainly relating to the seat part 10 above do not need to be limited to this, but rather can also be used additionally or alternatively for the backrest 12. With the motor vehicle seat according to the invention, it is therefore possible for the first time to implement a dynamic adjustment for the seat user depending on the acceleration or movement state of the vehicle and thus to relieve him / her, while at the same time taking into account the cramped interior conditions in motor vehicles. If, for example, there are only adjustment processes for the seat part with the backrest remaining statically, it is possible to rotate the seat to relieve the load on the vehicle occupant without it or the vehicle seat bumping against door panels, B-pillars or tunnels.
Neben den bereits angesprochenen Sensoren können auch andere Sensoren eingesetzt werden, beispielsweise mattenartige Drucksensoren, die im Fahr- zeugsitz untergebracht den bewegungsbedingten Sitzzustand des Sitzbenutzers erfassen. In addition to the sensors already mentioned, other sensors can also be used, for example mat-like pressure sensors that are the seat of the vehicle can record the movement-related seating condition of the seat user.

Claims

P a t e n t a n s p r ü c h e Patent claims
1 . Kraftfahrzeugsitz mit zueinander bewegbar angeordneten, mittels einer Einstellvorrichtung einstellbaren Sitzkomponenten (10,12, 14), dadurch ge¬ kennzeichnet, daß mittels einer Erfassungseinrichtung der Bewegungszu¬ stand des Fahrzeuges erfaßbar ist, die die Einstellvorrichtung veranlaßt, über Einzelaktuatoren (22,24,26,28,30) mindestens eine der Sitzkompo¬ nenten (10, 12,14) derart relativ zu den anderen Sitzkomponenten zu bewegen, daß während des Fahrvorganges automatisch eine Entlastung des Sitzbenutzers erfolgt.1 . Motor vehicle seat with mutually moveable seat components (10, 12, 14) which can be adjusted by means of an adjusting device, characterized in that the movement state of the vehicle can be detected by means of a detection device, which causes the adjusting device to be actuated by means of individual actuators (22, 24, 26 , 28, 30) to move at least one of the seat components (10, 12, 14) relative to the other seat components such that the seat user is automatically relieved during the driving process.
2. Kraftfahrzeugsitz nach Anspruch 1 , dadurch gekennzeichnet, daß eine kontinuierliche Anpassung der jeweils hierfür vorgesehenen Sitzkompo¬ nente (10, 12,14) in Abhängigkeit von den auftretenden Fahrzeugbeschleu¬ nigungen und/oder von der Größe des Lenkradeinschlages und/oder der Fahrzeuggeschwindigkeit erfolgt und daß eine Rückführung der dahinge¬ henden Sitzkomponente (10,12, 14) in eine Ausgangsstellung mittels der Einstellvorrichtung vorgesehen ist.2. Motor vehicle seat according to claim 1, characterized in that a continuous adjustment of the seat component provided for this purpose (10, 12, 14) takes place as a function of the vehicle accelerations occurring and / or of the size of the steering wheel angle and / or the vehicle speed and that the seat component (10, 12, 14) is returned to an initial position by means of the adjusting device.
3. Kraftfahrzeugsitz nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die einstellbaren Sitzkomponenten aus dem Sitzteil (10) und/oder der Rückenlehne (12) und/oder der Kopfstütze (14) und/oder aus Teilen der¬ selben gebildet sind.3. Motor vehicle seat according to claim 1 or 2, characterized in that the adjustable seat components from the seat part (10) and / or the backrest (12) and / or the headrest (14) and / or from parts thereof are formed.
4. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 3, dadurch gekenn¬ zeichnet, daß die Erfassungseinrichtung Beschleunigungssensoren (16) und/oder Bewegungssensoren zur Erfassung der Beschleunigungskräfte am Fahrzeug bzw. des Lenkradeinschlages aufweist. 4. Motor vehicle seat according to one of claims 1 to 3, characterized gekenn¬ characterized in that the detection device comprises acceleration sensors (16) and / or motion sensors for detecting the acceleration forces on the vehicle or the steering wheel angle.
5. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 4, dadurch gekenn¬ zeichnet, daß die Aktuatoren servoangetrieben sind, vorzugsweise aus Stellmotoren (22), Stellarbeitszylindern, mechanischen Stellgliedern, wie Koppeltrieben (24), Nocken- und Exzentertrieben (26), oder Federsyste¬ men (28) mit einstellbarer Federsteifigkeit und/oder Stellkammern (30) ver¬ änderlichen Volumens gebildet sind.5. Motor vehicle seat according to one of claims 1 to 4, characterized gekenn¬ characterized in that the actuators are servo-driven, preferably from actuators (22), actuating cylinders, mechanical actuators, such as coupling drives (24), cam and eccentric drives (26), or spring system ¬ men (28) with adjustable spring stiffness and / or adjusting chambers (30) variable volume are formed.
6. Kraftfahrzeugsitz nach einem der Ansprüche 3 bis 5, dadurch gekenn¬ zeichnet, daß bei einer Längsbeschleunigung in der jeweiligen Verfahr¬ richtung die Einstellvorrichtung das Sitzteil (10) und/oder die Rückenlehne (12) und/oder die Kopfstütze (14) ansteuert.6. Motor vehicle seat according to one of claims 3 to 5, characterized gekenn¬ characterized in that the longitudinal adjustment in the respective direction of travel, the adjusting device controls the seat part (10) and / or the backrest (12) and / or the headrest (14) .
7. Kraftfahrzeugsitz nach einem der Ansprüche 3 bis 6, dadurch gekenn¬ zeichnet, daß bei einer Querbeschleunigung in der jeweiligen Kurven¬ richtung die Einstellvorrichtung die in der Kurvenrichtung außen liegen¬ den Seiten von Sitzteil (10) und/oder Rückenlehne (12) ansteuert und entgegen der beschleunigungsbedingten Bewegung des Insassen bewegt.7. Motor vehicle seat according to one of claims 3 to 6, characterized gekenn¬ characterized in that in the case of lateral acceleration in the respective direction of the curve, the adjusting device controls the outside in the direction of the curve, the sides of the seat part (10) and / or backrest (12) and moves against the acceleration-induced movement of the occupant.
8. Kraftfahrzeugsitz nach einem der Ansprüche 3 bis 7, dadurch gekenn¬ zeichnet, daß bei einer Querbeschleunigung in der jeweiligen Kurven¬ richtung die Einstellvorrichtung Teile des Sitzteiles (10) derart ansteuert, daß die Sitzhöhe für den Sitzbenutzer unterschiedlich eingestellt ist.8. Motor vehicle seat according to one of claims 3 to 7, characterized gekenn¬ characterized in that at a lateral acceleration in the respective direction of the curve, the adjusting device controls parts of the seat part (10) such that the seat height is set differently for the seat user.
9. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 8, dadurch gekenn¬ zeichnet, daß die Parameter der Anpassung durch den Sitzbenutzer indivi¬ duell einstellbar sind.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. Kraftfahrzeugsitz nach einem der Ansprüche 1 bis 9, dadurch gekenn¬ zeichnet, daß die Einstellvorrichtung von dem Sitzbenutzer zusätzlich zum automatischen Einstellvorgang ansteuerbar ist. 10. Motor vehicle seat according to one of claims 1 to 9, characterized gekenn¬ characterized in that the adjusting device can be controlled by the seat user in addition to the automatic adjustment process.
EP97928197A 1996-06-20 1997-06-13 Motor vehicle seat Withdrawn EP0842061A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624587A DE19624587A1 (en) 1996-06-20 1996-06-20 Seat
DE19624587 1996-06-20
PCT/EP1997/003091 WO1997048570A1 (en) 1996-06-20 1997-06-13 Motor vehicle seat

Publications (1)

Publication Number Publication Date
EP0842061A1 true EP0842061A1 (en) 1998-05-20

Family

ID=7797458

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97929181A Withdrawn EP0844940A1 (en) 1996-06-20 1997-06-13 Motor vehicle seat
EP97928197A Withdrawn EP0842061A1 (en) 1996-06-20 1997-06-13 Motor vehicle seat

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97929181A Withdrawn EP0844940A1 (en) 1996-06-20 1997-06-13 Motor vehicle seat

Country Status (4)

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

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19750223C2 (en) * 1997-11-13 2002-01-10 Daimler Chrysler Ag Method for adapting the side support of a seated person in a vehicle seat and vehicle seat for this purpose, based on the driving situation and driving style
US6062642A (en) * 1998-04-02 2000-05-16 Volkswagen Ag Vehicle seat
DE19823661C1 (en) * 1998-05-20 1999-10-28 Brose Fahrzeugteile Adjustable automobile seat with automatic headrest adjustment
DE19823058C2 (en) * 1998-05-22 2001-04-19 Audi Ag Motor vehicle with a seat having at least one side cheek
DE29815521U1 (en) * 1998-08-31 1998-12-03 Thau, Barbara, 58285 Gevelsberg Seat for a vehicle
DE19958677C1 (en) * 1999-12-06 2001-05-03 Faure Bertrand Sitztech Gmbh Vehicle seat has center springs where the hardness can be adjusted together with the setting of the height of the upper edges of the seat side beads
DE19959411A1 (en) * 1999-12-09 2001-06-21 Bosch Gmbh Robert Device and method for adjusting seats in vehicles
DE10019220A1 (en) * 2000-04-18 2001-10-31 Bosch Gmbh Robert Device for transmitting control movements on vehicle seats
DE10019218A1 (en) * 2000-04-18 2001-10-31 Bosch Gmbh Robert Device for adjusting a vehicle seat
DE10022434A1 (en) * 2000-05-09 2001-11-22 Daimler Chrysler Ag Dynamic adaptation of vehicle seat to support body when cornering, determines adjustment from stored and current road and vehicle data, allowing for inherent delay
DE10151384B4 (en) * 2001-10-18 2005-12-08 Daimlerchrysler Ag vehicle seat
JP2003320884A (en) * 2002-04-26 2003-11-11 Delta Tooling Co Ltd Balancing point adjusting device for seat suspension
DE10305013A1 (en) * 2003-02-07 2004-08-19 Robert Bosch Gmbh Device for adjusting at least one vehicle seat
DE10318417B4 (en) * 2003-04-23 2006-04-13 Faurecia Autositze Gmbh & Co. Kg Adjustment arrangement for pre-crash adjustment of a vehicle component, in particular a vehicle seat
US6761402B1 (en) * 2003-06-12 2004-07-13 Tachi-S Co., Ltd. Structure of a vehicle seat
DE10330028A1 (en) * 2003-07-03 2005-04-07 Ims Gear Gmbh Vehicle seat section adjusting
DE102004017985A1 (en) * 2004-04-14 2005-11-03 Daimlerchrysler Ag Safety device for a motor vehicle
DE102004032139A1 (en) * 2004-07-02 2006-01-19 Daimlerchrysler Ag Safety device for a motor vehicle
US7789378B2 (en) * 2004-09-21 2010-09-07 Dittmar Edbert E L Plate spring with adjustable support cam
US20090051200A1 (en) * 2005-04-08 2009-02-26 Schukra Geratebau Ag Regulating Device for a Lateral Part of a Seat and Method for Producing a Lateral Part
ATE440520T1 (en) * 2005-04-08 2009-09-15 Schukra Geratebau Ag DEVICE AND METHOD FOR ADJUSTING A SIDE SUPPORT OF A SEAT
DE102006012784B4 (en) * 2005-12-07 2016-06-09 Volkswagen Ag Vehicle seat with changeable geometry
JP5055789B2 (en) * 2006-02-24 2012-10-24 アイシン精機株式会社 Vehicle seat device
US7232187B1 (en) * 2006-03-30 2007-06-19 Ford Global Technologies, Llc Head restraint for automotive vehicle
US20080100118A1 (en) * 2006-10-27 2008-05-01 Lear Corporation Dynamic headrest
JP4195053B2 (en) * 2006-11-21 2008-12-10 アイシン精機株式会社 Vehicle seat device
JP4459948B2 (en) * 2006-12-11 2010-04-28 本田技研工業株式会社 Vehicle seat
DE102007002500B4 (en) * 2007-01-17 2021-03-11 Bayerische Motoren Werke Aktiengesellschaft Method and control unit for controlling moving parts of a vehicle seat
DE102007002704B4 (en) 2007-01-18 2015-03-12 Daimler Ag Arrangement for the automatic support of a vehicle occupant
US7992933B2 (en) * 2007-06-21 2011-08-09 Lear Corporation Integrated vehicle seat with active head restraint system
DE102007032449A1 (en) * 2007-07-12 2009-01-15 GM Global Technology Operations, Inc., Detroit Seat arrangement controlling method for motor vehicle, involves moving or shifting side wall, where lateral support of passenger is safer in driving position and/or driving state than in usage position and/or usage state of wall
DE102007038293A1 (en) * 2007-08-14 2009-04-02 Bayerische Motoren Werke Aktiengesellschaft Seat element or resting element for use in seat of driver of vehicle e.g. passenger car, has four movable side edges, where position of side edges is varied based on spiral spring by two traction power transmission elements
US8100472B2 (en) * 2008-03-17 2012-01-24 Lear Corporation Vehicle active head restraint system with a locking linkage
US7894960B2 (en) * 2008-04-01 2011-02-22 Lear Corporation Active head restraint for a vehicle seat
DE102008043617A1 (en) * 2008-11-10 2010-05-12 Robert Bosch Gmbh vehicle seat
JP5349935B2 (en) 2008-12-09 2013-11-20 トヨタ紡織株式会社 Vehicle seat
DE102009031417B4 (en) * 2009-07-02 2021-04-01 Grammer Aktiengesellschaft Vehicle seat with oscillating movement in height direction
WO2012029821A1 (en) * 2010-09-02 2012-03-08 テイ・エス テック株式会社 Vehicle seat devices
DE102011009466A1 (en) * 2011-01-26 2012-07-26 Daimler Ag Method for dynamic driving support of vehicle occupant in vehicle seat of vehicle, involves controlling and adjusting of unit for dynamic driving support of vehicle occupant in vehicle seat corresponding to fork type of fork
CN105835740B (en) * 2011-08-31 2019-02-19 提爱思科技股份有限公司 Seat unit
US9199560B2 (en) * 2013-09-13 2015-12-01 Ford Global Technologies, Llc Self-adjusting seat stiffness system
JP6112359B2 (en) * 2013-09-19 2017-04-12 アイシン精機株式会社 Vehicle seat
WO2015077231A1 (en) * 2013-11-19 2015-05-28 Johnson Controls Technology Company Adjustable seat
DE102013114885A1 (en) * 2013-12-27 2015-07-02 Johnson Controls Metals and Mechanisms GmbH & Co. KG composite body
US10328823B2 (en) 2014-06-09 2019-06-25 Lear Corporation Adjustable seat assembly
US9987961B2 (en) 2014-06-09 2018-06-05 Lear Corporation Adjustable seat assembly
EP3221217B1 (en) * 2014-11-19 2018-12-12 Zodiac Seats France Comfort pilot seat kinematics
US9845026B2 (en) 2015-05-19 2017-12-19 Lear Corporation Adjustable seat assembly
US9884570B2 (en) 2015-05-19 2018-02-06 Lear Corporation Adjustable seat assembly
US9661928B2 (en) 2015-09-29 2017-05-30 Lear Corporation Air bladder assembly for seat bottoms of seat assemblies
US9827888B2 (en) * 2016-01-04 2017-11-28 Lear Corporation Seat assemblies with adjustable side bolster actuators
DE102016202173A1 (en) 2016-02-12 2017-08-17 Volkswagen Aktiengesellschaft Method for adjusting an adjustable seat or at least one adjustable seat component of the seat in a motor vehicle
US9896002B2 (en) 2016-03-30 2018-02-20 Lear Corporation Vehicle seat assembly and method of occupant accommodation
CN106886178A (en) * 2017-02-15 2017-06-23 穆特科技（武汉）股份有限公司 A kind of multidimensional seat synchronisation control means and system based on Audio Matching
JP6921684B2 (en) * 2017-08-25 2021-08-18 株式会社Ｓｕｂａｒｕ Crew protection device
US11110820B2 (en) 2018-04-03 2021-09-07 Lear Corporation Seat adjustment limiter and method of control
WO2019193040A1 (en) * 2018-04-04 2019-10-10 Adient Engineering and IP GmbH Floating seat
DE102018112019B4 (en) * 2018-05-18 2022-10-06 Grammer Aktiengesellschaft Vehicle seat with a damping device
DE102018008627A1 (en) * 2018-10-31 2020-04-30 Daimler Ag Device for reducing kinetic disorders of an occupant while driving a vehicle
US20220371475A1 (en) * 2019-09-09 2022-11-24 Adient Us Llc Seat assembly
DE102020215210A1 (en) 2020-12-02 2022-06-02 Psa Automobiles Sa Vehicle seat with side bolster adjustment
DE102021203394A1 (en) 2021-04-06 2022-10-06 Psa Automobiles Sa Control arrangement and method for dynamic position adjustment of a right side bolster and a left side bolster of a vehicle seat of a vehicle and vehicle with the control arrangement
DE102022134616A1 (en) 2022-07-08 2024-01-11 Adient Us Llc SEAT SWIVEL DEVICE AND VEHICLE SEAT WITH A SEAT SWIVEL DEVICE

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301910A (en) * 1961-07-07 1962-08-24 Safety seats for airplanes and automobiles
US3883172A (en) * 1973-07-02 1975-05-13 Caterpillar Tractor Co Vehicular seat mounting linkage
DE2721539C2 (en) * 1977-05-13 1983-11-24 Keiper Recaro GmbH & Co, 7312 Kirchheim Adjustable vehicle seat
DE2810577A1 (en) * 1978-03-11 1979-09-20 Volkswagenwerk Ag VEHICLE, IN PARTICULAR PERSONAL VEHICLE
DE8333127U1 (en) * 1983-11-18 1984-03-01 Breitenbach, Dieter, 6000 Frankfurt Device for protecting the head of vehicle occupants in the event of an accident
US4636000A (en) * 1984-09-28 1987-01-13 Tachikawa Spring Co. Ltd. Side support device in a vehicle seat
US4655505A (en) * 1984-12-13 1987-04-07 Nhk Spring Co., Ltd. Pneumatically controlled seat for vehicle
JPS61285147A (en) * 1985-06-11 1986-12-15 Kunimatsu Kogyo Kk Automatic adjusting device for side support in vehicle seat assembly
JPS6239338A (en) * 1985-08-15 1987-02-20 Mazda Motor Corp Car seat device
US4793583A (en) * 1986-11-10 1988-12-27 Bergacker John W Method and apparatus for hydraulically actuating a vehicle seat
US4924162A (en) * 1989-02-01 1990-05-08 Tachi-S Co., Ltd. Method of controlling a side support for use with a vehicle seat and device for use in such method
FR2647726B1 (en) * 1989-06-02 1991-09-20 Peugeot DEVICE FOR ORIENTATION OF A MOTOR VEHICLE SEAT
DE3930612A1 (en) * 1989-09-13 1991-03-21 Isringhausen Geb VEHICLE SEAT
US4924163A (en) * 1989-09-22 1990-05-08 Tachi-S Company, Ltd. Side support control device for use in a vehicle seat
DE4032157A1 (en) * 1989-11-03 1991-07-11 Autoliv Kolb Gmbh & Co Acceleration sensor for safety belts in vehicles - incorporates rack=and=pinion assembly and is accommodated in seat backrest
US5263765A (en) * 1989-12-27 1993-11-23 Nissan Motor Co., Ltd. Automatic adjustable seat
JP2748623B2 (en) * 1989-12-28 1998-05-13 日産自動車株式会社 Sheet
JPH04197315A (en) * 1990-11-29 1992-07-16 Nissan Motor Co Ltd Seat
DE4106863C2 (en) * 1991-03-05 1994-10-20 Daimler Benz Ag Motor vehicle seat
US5130622A (en) * 1991-04-16 1992-07-14 Tachi-S Co., Ltd. Method and device for controlling side support in a powered seat
US5328236A (en) * 1992-09-29 1994-07-12 Tachi-S Col. Ltd. Side support device in seat back of an automotive seat
FR2706826B1 (en) * 1993-06-24 1995-08-25 Bfa
US5573269A (en) * 1993-12-02 1996-11-12 Trw Vehicle Safety Systems Inc. Apparatus and method for sensing and restraining an occupant of a vehicle seat
DE4409046C2 (en) * 1994-03-12 1996-12-19 Brose Fahrzeugteile Device for adjusting the position and / or angular position of vehicle equipment
US5536059A (en) * 1994-11-04 1996-07-16 University Of Illinois Seat suspension system using human body responses
DE19529031A1 (en) * 1995-08-08 1997-02-13 Johannes Loch Knee protection arrangement for automobile - uses servo-cylinder to raise front of seat when airbag protection system is activated.
US5707109A (en) * 1996-02-02 1998-01-13 Lear Corporation Acceleration compensating vehicular seat assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9748570A1 *

Also Published As

Publication number Publication date
US5882060A (en) 1999-03-16
DE19624587A1 (en) 1998-01-22
WO1997048570A1 (en) 1997-12-24
WO1997048571A1 (en) 1997-12-24
US5975633A (en) 1999-11-02
EP0844940A1 (en) 1998-06-03

Similar Documents

Publication Publication Date Title
WO1997048570A1 (en) Motor vehicle seat
DE102017130798A1 (en) ACTIVE VEHICLE SEATING ARCHITECTURE FOR AID COMPENSATION IN MOTOR VEHICLES
EP2463146B1 (en) Vehicle vibration device for vehicle seats or vehicle cabins
DE102010034857B4 (en) Vehicle vibration device for vehicle seats
DE69807391T2 (en) Vehicle suspension with active camber change
DE69716445T2 (en) SEAT BACKREST MECHANISM
DE102011053647B4 (en) Vehicle seat with a suspension device and motor vehicle
WO1990003906A1 (en) Tilt compensator for high-speed vehicles, in particular rail vehicles
EP1152916B1 (en) Device and method for adjusting seats in vehicles
DE10252204B3 (en) Active seat unit for motor vehicles has base and seat coupled via four-bar- linkage with articulated bars between seat frame and seat carriage
DE4040047C2 (en) Car body tilt system
EP0621165B1 (en) Running gear for railway vehicles
DE3715128A1 (en) Vehicle with a seat arrangement
DE10061346A1 (en) Vehicle seat has bearing points for padded seat and backrest parts displaceable by motorised adjusting units and with spring-damper elements supporting seat upper frame on lower frame
EP1420979B1 (en) Arrangement of a headrest on a vehicle seat especilally in the event of a rear-end collision
EP0842814B1 (en) Headrest for vehicle seats.
DE102018119702B4 (en) Vehicle seat, in particular motor vehicle seat
DE19914163A1 (en) Seat for motor vehicle has backrest fastened via height-adjusting unit to longitudinally adjustable seat rail
DE19811958C2 (en) Adjustable vehicle seat with a movable seat cushion
DE19532259A1 (en) Car seat with adjustable spring stiffness
WO2006026967A1 (en) Motor vehicle seat
DE102020117429B4 (en) Vehicle seat and vehicle with vehicle seat
DE19943996B4 (en) Vehicle seat with side bolsters
WO1994011217A1 (en) Vehicle seat adjustable in longitudinal position and in height
DE10239385B4 (en) Vehicle seat with height adjustment device and seat load detection

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19980209

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT SE

17Q First examination report despatched

Effective date: 20010726

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20020206