EP1567367A1 - Vehicle chassis - Google Patents

Vehicle chassis

Info

Publication number
EP1567367A1
EP1567367A1 EP03769465A EP03769465A EP1567367A1 EP 1567367 A1 EP1567367 A1 EP 1567367A1 EP 03769465 A EP03769465 A EP 03769465A EP 03769465 A EP03769465 A EP 03769465A EP 1567367 A1 EP1567367 A1 EP 1567367A1
Authority
EP
European Patent Office
Prior art keywords
vehicle chassis
chassis according
electric motor
threaded spindle
spring
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Withdrawn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
EP03769465A
Other languages
German (de)
French (fr)
Inventor
Siegfried Ellmann
Holger Wehaus
Walter Kolb
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.)
ThyssenKrupp Technologies AG
Original Assignee
ThyssenKrupp Automotive AG
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 ThyssenKrupp Automotive AG filed Critical ThyssenKrupp Automotive AG
Publication of EP1567367A1 publication Critical patent/EP1567367A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • B60G15/063—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the mounting of the spring on the damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a wound spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/42—Electric actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • B60G2204/1242—Mounting of coil springs on a damper, e.g. MacPerson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/128—Damper mount on vehicle body or chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/419—Gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/45—Stops limiting travel
    • B60G2204/4502—Stops limiting travel using resilient buffer
    • B60G2204/45021—Stops limiting travel using resilient buffer for limiting upper mount movement of a McPherson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance

Definitions

  • the invention relates to a vehicle chassis with a spring support for supporting a coil spring clamped between two spring plates and a vibration damper, in which a region of the piston rod and / or the damper tube is arranged within the coil spring, at least one spring plate using a drive unit consisting of a stator and rotor formed ring electric motor and a transmission formed from a threaded spindle and a threaded screw, is axially adjustable.
  • a spring support within a vehicle chassis which serves to support a coil spring tensioned between two spring plates, comprising at least one axially adjustable spring plate and fastenings on the vehicle chassis and on the vehicle body, the spring plate being axially driven by a drive unit is positioned.
  • An electric motor is used as the drive unit, a gear being arranged between the axis of rotation of the electric motor and the spring plate.
  • the disadvantage of this spring carrier is that a large overall height is required between the vehicle body and the upper spring plate, which means that the piston rod of the shock absorber or spring strut must be particularly long and therefore prone to buckling, or it makes the use of this spring carrier for spring struts difficult.
  • the spring support described here requires a large number of mechanical components, as a result of which it entails high production costs.
  • WO-A 02/08001 describes a device for controlling movements of the bodywork of motor vehicles, the bodywork being supported indirectly or directly on at least one wheel axle via a series connection comprising an active actuator and a supporting spring.
  • the actuator is formed by an electromechanical drive which is provided axially outside of a helical spring and is in operative connection with an axially underlying ball screw drive including the spindle nut.
  • DE-A 1 95 10 032 a relatively large axial installation space is also required here, so that the same disadvantages apply to this document.
  • DE-C 1 01 01 694 shows a vehicle chassis, including a spring support for supporting a helical spring clamped between two spring plates and a vibration damper, in which an area of the piston rod and / or the damper tube is arranged within a helical spring, at least one Spring plate is axially adjustable by means of a drive unit, formed from an electric motor and gear.
  • the electric motor is designed as a ring motor with an external stator and an internal rotor.
  • the inside of the rotor carries a movement nut which axially adjusts a spring plate carrier, which is designed as a threaded spindle on the outside and is connected to the spring plate. Movement nut and spring plate are designed as ball screws.
  • the vehicle chassis according to the invention which contains the spring support, has the advantage that the overall height can be further reduced.
  • the spring support can also be used for conventional strut designs without any special structural changes. Even when used with normal spring-shock absorber combinations, neither other shock absorbers nor other springs need to be used if an axially adjustable spring support is used as an alternative to the normal spring support. It is also advantageous that the spring support according to the invention has only a few components and can therefore be produced inexpensively.
  • Another advantage over the prior art is the fact that, due to the larger lever arm that now results in a larger diameter of the electric ring motor, a larger actuating torque can be generated.
  • Spring supports including spring and shock absorbers.
  • Figures 1 to 3 show longitudinal sections through differently designed spring supports, including springs and shock absorbers, the same components being provided with the same reference numerals.
  • the spring support shown in FIG. 1 serves to receive a helical spring 1, in which it is shown in this example that the one end region of the helical spring 1 is supported against a spring plate 2.
  • a shock absorber 3 with a piston rod 5 which is axially immersed axially in a shock absorber tube 4 is arranged centrally within the helical spring 1.
  • This shock absorber can be designed with a predetermined, predetermined damping. However, a damper with variable damping force can also be used.
  • the wheel suspension is connected in the lower area via a flange, not shown.
  • the piston rod 5 is connected in a known manner via components 6 of the vehicle body.
  • connection parts 8 which are designed to be angular and shock-elastic, which in turn are operatively connected to the component 6 of the vehicle body by means of screw bolts 9.
  • the spring support interacts with an adjusting device 10, which is formed by a ring electric motor (inductive motor), including a stator 1 1 and a rotor 1 2, which are arranged to form an air gap 13 within a housing 1 4.
  • the ring motor essentially consists of electrical windings which, together with transformer plate packs, generate an electromagnetic field.
  • the electrical windings, the transformer sheets and possibly also sensors and electrical or electronic components of the control and evaluation electronics can, if necessary, be cast into the outer housing 1 4 by means of a later hardening plastic compound.
  • the rotor 1 2 is supported relative to the housing 14 carrying the stator 1 1 via a ball bearing 1 5.
  • Radially within the axial height of the ring electric motor is on the one hand on the piston rod 5, for example via needle bearings 16 Threaded spindle 1 7 and a threaded nut 1 8, the threaded nut 18 completely and the threaded spindle 1 7 are at least partially arranged within the axial height of the housing 14 of the ring electric motor.
  • a plain bearing can also be used.
  • the needle bearing 1 6 is arranged here in the lower part of the threaded spindle 1 7, and if necessary a further needle bearing can also be provided in the upper part thereof.
  • a further reduction in the axial height is possible if the inner diameter of the threaded spindle 17 is larger than the diameter of the shock absorber housing. Then the threaded spindle 1 7 can overlap the shock absorber housing.
  • the inner housing part 1 4 'carrying the rotor 1 2' is provided with a radial projection 19 which is non-positively connected to the upper end region 20 of the threaded spindle 1 7.
  • a rolling bearing 21 extends on the shoulder side between the upper part of the housing 14 and the inner housing part 14 '.
  • the threaded spindle 1 7 is also set in rotation in a similar manner, so that the threaded nut 1 8 moves up and down over the balls 22 provided between the threaded spindle 1 7 and it can be, whereby an axial adjustment of the spring plate 2 is effected.
  • the spring plate 2 is mounted on a radial plate 2 ′ of the threaded nut 18, which is provided radially inside the ring electric motor or the rotor 1 2.
  • Figure 2 shows an alternative embodiment of the spring support shown in Figure 1.
  • the adjusting device 10 is provided axially outside of the coil spring 1, the dimensions of the ring electric motor remaining approximately within the radial extent of the coil spring 1.
  • the ring electric motor is formed by a stator 11 and a rotor 1 2.
  • the spring plate 2 or the same supporting radial plate 2 ' lies axially below the housing 14, so that the adjusting device 10 is compact.
  • a roller bearing 21 is used, a flexible sheet metal membrane 23 also being provided between the inner housing part 14 'and the threaded spindle 17, which differs from FIG. 1 and which is welded 24, 25 to the inner housing part 1 4' on the one hand and to the threaded spindle on the other hand 17 is connected. Otherwise, the further structure remains analogous to FIG. 1.
  • the design according to FIG. 3 differs from the design according to FIG. 2 in that the housing part 14 connected to the rotor 1 2 is not connected torsionally directly to the threaded spindle 1 7 of the ball rolling gear.
  • a planetary gear is provided between these two components.
  • the housing 1 4 of the ring electric motor is supported, as in the embodiments according to FIGS. 1 and 2, directly on the upper end of the piston rod 5 and on the connecting part 8 supported on the vehicle body.
  • the downwardly extending part 26 of the sleeve of the housing 14 surrounding the end of the piston rod 5 is designed with a gear toothing 27.
  • a gear toothing 28 is also provided on the upper part of the housing part 14 ', but is designed as an internal toothing.
  • Planet gears 29 run between these two gear teeth 27, 28.
  • the planet gears 29 are connected to the threaded spindle 17 via axes 30. With these constructions, the positions have to be adjusted accordingly.
  • the threaded spindle 17 is supported by a bearing 31 on the housing 14 of the ring electric motor, but this bearing 31 is outside the planetary gear and thus also guides the planetary gear.
  • the upper part 32 of the inner housing part 1 4 ' is supported in the embodiment according to FIG. 3, then via a further bearing 33 relative to the housing 14, as a result of which the gear toothing 28 arranged on this upper part 33 is also supported.
  • the adjusting device can be equipped with an electromagnetic or mechanical brake, especially in the area of the ring electric motor.
  • This brake is intended to prevent an unintentional adjustment of the adjustment device after the vehicle electronics fail or after the engine has been switched off.
  • This brake is designed in the usual way and is not shown in detail.
  • the ring electric motor is switched as a generator and that energy is recovered when the vehicle body pitch or roll.
  • the adjustable spring supports according to the invention by installing the adjustable spring supports according to the invention, the use of anti-roll bars on the front and / or rear axle can be omitted.
  • the devices described are also particularly suitable for accommodating sensors, actuators and data transmission devices for controlling the suspension.
  • suitable materials for the ball screw and the ring electric motor By choosing suitable materials for the ball screw and the ring electric motor, further advantages can be achieved. This results in a dynamic improvement when using composite materials for the rotor and the connection of the rotor to the threaded spindle.
  • the stator and the housing are formed in Pressure gelling technology can achieve better heat dissipation and a reduction in manufacturing costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention relates to a vehicle chassis comprising a spring support for supporting a coil spring that is braced between two spring seats and a vibration damper, in which one section of the piston rod and/or the damper tube is situated inside the coil spring. At least one spring seat can be displaced axially by means of a drive unit, consisting of an electric ring motor containing a stator and a rotor and a gear mechanism consisting of a threaded spindle and a threaded screw. According to the invention, the threaded screw and in addition at least one part of the threaded spindle are positioned radially inside the coil spring and radially in the vicinity of the axial extension of the electric ring motor.

Description

FahrzeugfahrwerkThe vehicle chassis
Beschreibungdescription
Die Erfindung betrifft ein Fahrzeugfahrwerk mit einem Federträger zur Abstützung einer zwischen zwei Federtellern verspannten Wendelfeder und einem Schwingungsdämpfer, bei dem ein Bereich der Kolbenstange und/oder des Dämpferrohres innerhalb der Wendelfeder angeordnet ist, wobei mindestens ein Federteller mittels einer Antriebseinheit, bestehend aus einem aus Stator und Rotor gebildeten Ring-Elektromotor und einem aus einer Gewindespindel und einer Gewindeschraube gebildeten Getriebe, axial verstellbar ist.The invention relates to a vehicle chassis with a spring support for supporting a coil spring clamped between two spring plates and a vibration damper, in which a region of the piston rod and / or the damper tube is arranged within the coil spring, at least one spring plate using a drive unit consisting of a stator and rotor formed ring electric motor and a transmission formed from a threaded spindle and a threaded screw, is axially adjustable.
Durch die DE-A 1 95 10 032 ist ein Federträger innerhalb eines Fahrzeugfahrwerkes bekannt geworden, der zur Abstützung einer zwischen zwei Federtellern verspannten Schraubenfeder, umfassend mindestens einen axial verstellbaren Federteller sowie Befestigungen am Fahrzeugfahrwerk und am Fahrzeugaufbau dient, wobei der Federteller mittels einer Antriebseinheit axial positioniert wird. Als Antriebseinheit kommt hierbei ein Elektromotor zum Einsatz, wobei zwischen der Drehachse des Elektromotors und dem Federteller ein Getriebe angeordnet ist. Nachteilig bei diesem Federträger ist, dass eine große Bauhöhe zwischen dem Fahrzeugaufbau und dem oberen Federteller benötigt wird, wodurch die Kolbenstange des Stoßdämpfers oder Federbeines besonders lang und damit knickanfällig ausgebildet sein muss, beziehungsweise den Einsatz dieses Federträgers für Ferderbeine erschwert. Des Weiteren erfordert der hier beschriebene Federträger eine große Anzahl von mechanischen Bauteilen, wodurch er hohe Herstellungskosten mit sich bringt.From DE-A 1 95 10 032 a spring support within a vehicle chassis has become known which serves to support a coil spring tensioned between two spring plates, comprising at least one axially adjustable spring plate and fastenings on the vehicle chassis and on the vehicle body, the spring plate being axially driven by a drive unit is positioned. An electric motor is used as the drive unit, a gear being arranged between the axis of rotation of the electric motor and the spring plate. The disadvantage of this spring carrier is that a large overall height is required between the vehicle body and the upper spring plate, which means that the piston rod of the shock absorber or spring strut must be particularly long and therefore prone to buckling, or it makes the use of this spring carrier for spring struts difficult. Furthermore, the spring support described here requires a large number of mechanical components, as a result of which it entails high production costs.
In der WO-A 02/08001 wird eine Vorrichtung zur Regelung von Bewegungen des Aufbaus von Kraftfahrzeugen beschrieben, wobei der Aufbau über eine Serienschaltung aus einem aktiven Stellglied und einer tragenden Feder an zumindest einer Radachse mittelbar oder unmittelbar abgestützt ist. Das Stellglied wird von einem elektromechanischen Antrieb gebildet, der axial außerhalb einer Wendelfeder vorgesehen ist und in Wirkverbindung mit einem axial darunter liegenden Kugelgewindetrieb samt Spindelmutter steht. Analog zur DE-A 1 95 10 032 wird auch hier ein relativ großer axialer Bauraum benötigt, sodass für diese Druckschrift die gleichen Nachteile gelten.WO-A 02/08001 describes a device for controlling movements of the bodywork of motor vehicles, the bodywork being supported indirectly or directly on at least one wheel axle via a series connection comprising an active actuator and a supporting spring. The actuator is formed by an electromechanical drive which is provided axially outside of a helical spring and is in operative connection with an axially underlying ball screw drive including the spindle nut. Analogous to DE-A 1 95 10 032, a relatively large axial installation space is also required here, so that the same disadvantages apply to this document.
Der DE-C 1 01 01 694 ist ein Fahrzeugfahrwerk zu entnehmen, beinhaltend einen Federträger zur Abstützung von einer zwischen zwei Federtellern verspannten Wendelfeder und einem Schwingungsdämpfer, bei dem ein Bereich der Kolbenstange und/oder des Dämpferrohres innerhalb einer Wendelfeder angeordnet ist, wobei mindestens ein Federteller mittels einer Antriebseinheit, gebildet aus Elektromotor und Getriebe, axial verstellbar ist. Der Elektromotor ist als Ringmotor mit einem außen liegenden Stator und einem innen liegenden Rotor ausgebildet. Der Rotor trägt innenseitig eine Bewegungsmutter, die einen außenseitig als Gewindespindel ausgebildeten, mit dem Federteller verbundenen Federtellerträger axial verstellt. Bewegungsmutter und Federteller sind hierbei als Kugelrollspindel ausgebildet. Durch diese Maßnahme kann zwar bereits die axiale Bauhöhe reduziert werden, durch den großen axialen Durchmesser des Getriebes ist aber ein hohes Antriebsmoment notwendig. Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Fahrzeugfahrwerk dahingehend weiterzubilden, dass größere Axialkräfte ohne Vergrößerung des Elektromotors aufgebracht werden können.DE-C 1 01 01 694 shows a vehicle chassis, including a spring support for supporting a helical spring clamped between two spring plates and a vibration damper, in which an area of the piston rod and / or the damper tube is arranged within a helical spring, at least one Spring plate is axially adjustable by means of a drive unit, formed from an electric motor and gear. The electric motor is designed as a ring motor with an external stator and an internal rotor. The inside of the rotor carries a movement nut which axially adjusts a spring plate carrier, which is designed as a threaded spindle on the outside and is connected to the spring plate. Movement nut and spring plate are designed as ball screws. Although the axial overall height can already be reduced by this measure, the large axial diameter of the transmission means that a high drive torque is necessary. The invention has for its object to develop a generic vehicle chassis so that larger axial forces can be applied without increasing the size of the electric motor.
Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved with the features of claim 1.
Vorteilhafte Aus- und Weiterbildungen des Erfindungsgegenstandes sind in den Ansprüchen 2 bis 1 5 beschrieben.Advantageous training and further developments of the subject matter of the invention are described in claims 2 to 1 5.
Gegenüber dem Stand der Technik weist das erfindungsgemäße, den Federträger beinhaltende Fahrzeugfahrwerk den Vorteil auf, dass die Bauhöhe weiterhin reduziert werden kann. Dadurch kann der Federträger auch ohne besondere konstruktive Veränderungen für übliche Federbeinkonstruktionen eingesetzt werden. Auch beim Einsatz bei normalen Feder-Stoßdämpfer- Kombinattonen müssen weder andere Stoßdämpfer noch andere Federn eingesetzt werden, wenn alternativ zur normalen Federabstützung ein axial verstellbarer Federträger eingesetzt wird. Des Weiteren vorteilhaft ist, dass der erfindungsgemäße Federträger nur wenige Bauteile aufweist und somit kostengünstig hergestellt werden kann. Ein weiterer Vorteil gegenüber dem Stand der Technik ist darin zu sehen, dass bedingt durch den nun größeren Durchmesser des Elektro-Ringmotors sich ergebenden größeren Hebelarm ein größeres Stellmoment erzeugt werden kann.Compared to the prior art, the vehicle chassis according to the invention, which contains the spring support, has the advantage that the overall height can be further reduced. As a result, the spring support can also be used for conventional strut designs without any special structural changes. Even when used with normal spring-shock absorber combinations, neither other shock absorbers nor other springs need to be used if an axially adjustable spring support is used as an alternative to the normal spring support. It is also advantageous that the spring support according to the invention has only a few components and can therefore be produced inexpensively. Another advantage over the prior art is the fact that, due to the larger lever arm that now results in a larger diameter of the electric ring motor, a larger actuating torque can be generated.
Der Erfindungsgegenstand ist anhand eines Ausführungsbeispieles in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen:The subject matter of the invention is illustrated in the drawing using an exemplary embodiment and is described in more detail below. Show it:
Figuren 1 bis 3 Längsschnitte durch unterschiedlich gestalteteFigures 1 to 3 longitudinal sections through differently designed
Federträger, einschließlich Feder- und Stoßdämpfer. Die Figuren 1 bis 3 zeigen Längsschnitte durch unterschiedlich gestaltete Federträger, einschließlich Federn und Stoßdämpfern, wobei gleiche Bauteile mit gleichen Bezugszeichen versehen sind.Spring supports, including spring and shock absorbers. Figures 1 to 3 show longitudinal sections through differently designed spring supports, including springs and shock absorbers, the same components being provided with the same reference numerals.
Der in Figur 1 dargestellte Federträger dient zur Aufnahme einer Wendelfeder 1 , bei der in diesem Beispiel dargestellt ist, dass sich der eine Endbereich der Wendelfeder 1 gegen einen Federteller 2 abstützt. Zentral innerhalb der Wendelfeder 1 ist ein Stoßdämpfer 3 mit einer oszillierend axial in ein Stoßdämpferrohr 4 eintauchenden Kolbenstange 5 angeordnet. Dieser Stoßdämpfer kann mit einer konstruktiv vorgegebenen festgelegten Dämpfung ausgebildet sein. Es kann aber auch ein Dämpfer mit veränderbarer Dämpfkraft eingesetzt werden. Die Anbindung der Radaufhängung erfolgt im unteren Bereich über einen nicht weiter dargestellten Flansch. Die Anbindung der Kolbenstange 5 erfolgt in bekannter Weise über Bauteile 6 des Fahrzeugaufbaus. Hierzu wird die Kolbenstange 5 mittels einer Mutter 7 an winkel- und stoßelastisch ausgebildeten Anschlussteilen 8 angeschraubt, die wiederum mittels Schraubbolzen 9 mit dem Bauteil 6 des Fahrzeugaufbaus in Wirkverbindung stehen. Der Federträger wirkt mit einer Versteilvorrichtung 10 zusammen, die gebildet wird durch einen Ring-Elektromotor (Induktivmotor), beinhaltend einen Stator 1 1 sowie einen Rotor 1 2, die unter Bildung eines Luftspaltes 13 innerhalb eines Gehäuses 1 4 angeordnet sind. Der Ringmotor besteht im Wesentlichen aus elektrischen Wicklungen, die zusammen mit Trafoblechpaketen ein elektromagnetisches Feld erzeugen. Die elektrischen Wicklungen, die Trafobleche sowie eventuell auch Sensoren und elektrische oder elektronische Bauteile der Steuer- und Auswerteelektronik können bedarfsweise mittels einer später aushärtenden Kunststoffmasse in das Außengehäuse 1 4 eingegossen werden. Der Rotor 1 2 ist gegenüber dem den Stator 1 1 tragenden Gehäuse 14 über ein Kugellager 1 5 abgestützt. Radial innerhalb der axialen Bauhöhe des Ring-Elektromotors befindet sich einerseits eine auf der Kolbenstange 5, beispielsweise über Nadellager 1 6, gelagerte Gewindespindel 1 7 sowie eine Gewindemutter 1 8, wobei die Gewindemutter 18 vollständig und die Gewindespindel 1 7 zumindest anteilig innerhalb der axialen Bauhöhe des Gehäuses 14 des Ring-Elektromotors angeordnet sind. Anstatt des Nadellagers 1 6 kann auch ein Gleitlager verwendet werden. Durch diese Maßnahme kann die axiale Bauhöhe der Versteilvorrichtung 10 beträchtlich reduziert werden, ohne dass es weiterer aufwändiger Bauteile bedarf. Das Nadellager 1 6 ist hier im unteren Teil der Gewindespindel 1 7 angeordnet, wobei bedarfsweise auch in dessen oberem Teil ein weiteres Nadellager vorgesehen werden kann. Eine weitere Reduzierung der axialen Bauhöhe ist möglich, wenn der Innendurchmesser der Gewindespindel 1 7 größer ist als der Durchmesser des Stoßdämpfergehäuses. Dann kann die Gewindespindel 1 7 das Stoßdämpfergehäuse übergreifen. Der den Rotor 1 2 tragende innere Gehäuseteil 1 4' ist mit einem radialen Ansatz 19 versehen, der kraftschlüssig mit dem oberen Endbereich 20 der Gewindespindel 1 7 verbunden ist. Zwischen dem oberen Teil des Gehäuses 1 4 und dem inneren Gehäuseteil 14' erstreckt sich ansatzseitig ein Wälzlager 21 . In Folge der seitens des Rotors 1 2 und somit des Gehäuseteiles 14' ausgeübten Rotationsbewegung wird auch die Gewindespindel 1 7 in gleichartiger Weise in Rotation versetzt, sodass die Gewindemutter 1 8 über die zwischen der Gewindespindel 1 7 und ihr vorgesehenen Kugeln 22 auf und ab bewegt werden kann, wodurch eine axiale Verstellung des Federtellers 2 bewirkt wird. Der Federteller 2 ist in diesem Beispiel an einem radialen Teller 2 ' der Gewindemutter 18 gelagert, der radial innerhalb des Ring-Elektromotors, respektive des Rotors 1 2, vorgesehen ist.The spring support shown in FIG. 1 serves to receive a helical spring 1, in which it is shown in this example that the one end region of the helical spring 1 is supported against a spring plate 2. A shock absorber 3 with a piston rod 5 which is axially immersed axially in a shock absorber tube 4 is arranged centrally within the helical spring 1. This shock absorber can be designed with a predetermined, predetermined damping. However, a damper with variable damping force can also be used. The wheel suspension is connected in the lower area via a flange, not shown. The piston rod 5 is connected in a known manner via components 6 of the vehicle body. For this purpose, the piston rod 5 is screwed by means of a nut 7 to connection parts 8 which are designed to be angular and shock-elastic, which in turn are operatively connected to the component 6 of the vehicle body by means of screw bolts 9. The spring support interacts with an adjusting device 10, which is formed by a ring electric motor (inductive motor), including a stator 1 1 and a rotor 1 2, which are arranged to form an air gap 13 within a housing 1 4. The ring motor essentially consists of electrical windings which, together with transformer plate packs, generate an electromagnetic field. The electrical windings, the transformer sheets and possibly also sensors and electrical or electronic components of the control and evaluation electronics can, if necessary, be cast into the outer housing 1 4 by means of a later hardening plastic compound. The rotor 1 2 is supported relative to the housing 14 carrying the stator 1 1 via a ball bearing 1 5. Radially within the axial height of the ring electric motor is on the one hand on the piston rod 5, for example via needle bearings 16 Threaded spindle 1 7 and a threaded nut 1 8, the threaded nut 18 completely and the threaded spindle 1 7 are at least partially arranged within the axial height of the housing 14 of the ring electric motor. Instead of the needle bearing 1 6, a plain bearing can also be used. This measure allows the axial overall height of the adjusting device 10 to be considerably reduced without the need for further complex components. The needle bearing 1 6 is arranged here in the lower part of the threaded spindle 1 7, and if necessary a further needle bearing can also be provided in the upper part thereof. A further reduction in the axial height is possible if the inner diameter of the threaded spindle 17 is larger than the diameter of the shock absorber housing. Then the threaded spindle 1 7 can overlap the shock absorber housing. The inner housing part 1 4 'carrying the rotor 1 2' is provided with a radial projection 19 which is non-positively connected to the upper end region 20 of the threaded spindle 1 7. A rolling bearing 21 extends on the shoulder side between the upper part of the housing 14 and the inner housing part 14 '. As a result of the rotational movement exerted by the rotor 1 2 and thus the housing part 14 ', the threaded spindle 1 7 is also set in rotation in a similar manner, so that the threaded nut 1 8 moves up and down over the balls 22 provided between the threaded spindle 1 7 and it can be, whereby an axial adjustment of the spring plate 2 is effected. In this example, the spring plate 2 is mounted on a radial plate 2 ′ of the threaded nut 18, which is provided radially inside the ring electric motor or the rotor 1 2.
Figur 2 zeigt eine alternative Ausführungsform des in Figur 1 dargestellten Federträgers. Abweichend zu Figur 1 ist die Versteileinrichtung 10 axial außerhalb der Wendelfeder 1 vorgesehen, wobei der Ring-Elektromotor abmessungsmäßig etwa innerhalb der radialen Erstreckung der Wendelfeder 1 verbleibt. Auch hier wird der Ring-Elektromotor gebildet durch einen Stator 1 1 und einen Rotor 1 2. Der Federteller 2 bzw. der selbigen tragende radiale Teller 2 ' , liegt in diesem Beispiel axial unterhalb des Gehäuses 14, sodass eine kompakte Bauweise der Verstellvorrichtung 10 gegeben ist. Auch hier kommt ein Wälzlager 21 zum Einsatz, wobei ebenfalls abweichend zu Figur 1 zwischen dem Gehäuseinnenteil 14' und der Gewindespindel 17 eine flexible Blechmembran 23 vorgesehen ist, die durch Schweißen 24, 25 einerseits fest mit dem Gehäuseinnenteil 1 4' und andererseits mit der Gewindespindel 17 verbunden ist. Im Übrigen verbleibt der weitere Aufbau analog zu Figur 1 .Figure 2 shows an alternative embodiment of the spring support shown in Figure 1. In contrast to FIG. 1, the adjusting device 10 is provided axially outside of the coil spring 1, the dimensions of the ring electric motor remaining approximately within the radial extent of the coil spring 1. Here too, the ring electric motor is formed by a stator 11 and a rotor 1 2. In this example, the spring plate 2 or the same supporting radial plate 2 ' lies axially below the housing 14, so that the adjusting device 10 is compact. Here, too, a roller bearing 21 is used, a flexible sheet metal membrane 23 also being provided between the inner housing part 14 'and the threaded spindle 17, which differs from FIG. 1 and which is welded 24, 25 to the inner housing part 1 4' on the one hand and to the threaded spindle on the other hand 17 is connected. Otherwise, the further structure remains analogous to FIG. 1.
Die Ausbildung gemäß Figur 3 unterscheidet sich gegenüber der Ausbildung nach Figur 2 dadurch, dass das mit dem Rotor 1 2 verbundene Gehäuseteil 14 torsionsmäßig nicht direkt mit der Gewindespindel 1 7 des Kugelrollgetriebes verbunden ist.The design according to FIG. 3 differs from the design according to FIG. 2 in that the housing part 14 connected to the rotor 1 2 is not connected torsionally directly to the threaded spindle 1 7 of the ball rolling gear.
Zwischen diesen beiden Bauteilen ist ein Planetengetriebe vorgesehen. Dabei stützt sich das Gehäuse 1 4 des Ring-Elektromotors, wie auch bei den Ausbildungen nach Figur 1 und 2, direkt am oberen Ende der Kolbenstange 5 sowie am sich am Fahrzeugaufbau abstützenden Anschlussteil 8 ab.A planetary gear is provided between these two components. The housing 1 4 of the ring electric motor is supported, as in the embodiments according to FIGS. 1 and 2, directly on the upper end of the piston rod 5 and on the connecting part 8 supported on the vehicle body.
Das sich nach unten erstreckende Teil 26 der das Ende der Kolbenstange 5 umgebenden Hülse des Gehäuses 14 ist mit einer Getriebeverzahnung 27 ausgebildet. Am oberen Teil des Gehäuseteils 14' ist ebenfalls eine Getriebeverzahnung 28 vorgesehen, die jedoch als Innenverzahnung ausgebildet ist. Zwischen diesen beiden Getriebeverzahnungen 27, 28 laufen Planetenräder 29. Die Planetenräder 29 sind über Achsen 30 an der Gewindespindel 1 7 angebunden. Durch diese Konstruktionen sind die Lagungen entsprechend anzupassen. Die Gewindespindel 1 7 stützt sich über ein Lager 31 am Gehäuse 14 des Ring-Elektromotors ab, wobei dieses Lager 31 jedoch außerhalb des Planetengetriebes liegt und somit auch das Planetengetriebe führt. Der obere Teil 32 des Gehäuseinnenteils 1 4' stützt sich bei der Ausbildung gemäß Figur 3 dann über ein weiteres Lager 33 gegenüber dem Gehäuse 14 ab, wodurch auch die an diesem oberen Teil 33 angeordnete Getriebeverzahnung 28 abgestützt ist.The downwardly extending part 26 of the sleeve of the housing 14 surrounding the end of the piston rod 5 is designed with a gear toothing 27. A gear toothing 28 is also provided on the upper part of the housing part 14 ', but is designed as an internal toothing. Planet gears 29 run between these two gear teeth 27, 28. The planet gears 29 are connected to the threaded spindle 17 via axes 30. With these constructions, the positions have to be adjusted accordingly. The threaded spindle 17 is supported by a bearing 31 on the housing 14 of the ring electric motor, but this bearing 31 is outside the planetary gear and thus also guides the planetary gear. The upper part 32 of the inner housing part 1 4 'is supported in the embodiment according to FIG. 3, then via a further bearing 33 relative to the housing 14, as a result of which the gear toothing 28 arranged on this upper part 33 is also supported.
Durch die Zwischenschaltung des in Figur 3 dargestellten Planetengetriebes zwischen den Rotor 12 und das Kugelrollgetriebe wird eine weitere große Übersetzung geschaffen, sodass das aufzubringende Drehmoment des Ring- Elektromotors nochmals wesentlich reduziert werden kann. Die übrigen Teile der VerStelleinrichtung 10 werden funktionell nicht verändert.By interposing the planetary gear shown in Figure 3 between the rotor 12 and the ball rolling gear, another large translation is created so that the torque to be applied by the ring electric motor can be significantly reduced again. The remaining parts of the adjusting device 10 are not changed functionally.
Sofern es technisch erforderlich ist, kann die Versteileinrichtung speziell im Bereich des Ring-Elektromotors noch mit einer elektromagnetischen oder mechanischen Bremse ausgerüstet werden. Diese Bremse soll verhindern, dass eine ungewollte Verstellung der VerStelleinrichtung nach Ausfall der Fahrzeugelektronik oder nach Ausstellen des Motors erfolgt. Diese Bremse ist in üblicher Weise ausgebildet und ist nicht näher dargestellt.If it is technically necessary, the adjusting device can be equipped with an electromagnetic or mechanical brake, especially in the area of the ring electric motor. This brake is intended to prevent an unintentional adjustment of the adjustment device after the vehicle electronics fail or after the engine has been switched off. This brake is designed in the usual way and is not shown in detail.
Zur Optimierung der Bordnetzbelastung kann darüber hinaus vorgesehen werden, dass der Ring-Elektromotor als Generator geschaltet wird und bei Nick- oder Wankbewegungen des Fahrzeugaufbaus eine Energierückgewinnung erfolgt. Bekanntermaßen kann durch den Einbau der verstellbaren Federträger nach der Erfindung die Verwendung von Drehstabilisatoren an der Vorder- und/oder Hinterachse entfallen. Die beschriebenen Vorrichtungen bieten sich auch besonders dazu an, Sensoren, Steller und Datenübertragungseinrichtung für die Steuerung der Federung aufzunehmen. Durch die Wahl geeigneter Werkstoffe für die Kugelrollspindel und den Ring-Elektromotor lassen sich noch weitere Vorteile erzielen. So ergibt sich bei Einsatz von Verbundwerkstoffen für den Rotor und die Anbindung des Rotors an die Gewindespindel eine Dynamikverbesserung. Bei einer Ausbildung des Stators und des Gehäuses in Druckgeliertechnik kann eine bessere Wärmeabfuhr und eine Reduzierung der Herstellkosten erreicht werden. To optimize the electrical system load, it can also be provided that the ring electric motor is switched as a generator and that energy is recovered when the vehicle body pitch or roll. As is known, by installing the adjustable spring supports according to the invention, the use of anti-roll bars on the front and / or rear axle can be omitted. The devices described are also particularly suitable for accommodating sensors, actuators and data transmission devices for controlling the suspension. By choosing suitable materials for the ball screw and the ring electric motor, further advantages can be achieved. This results in a dynamic improvement when using composite materials for the rotor and the connection of the rotor to the threaded spindle. When the stator and the housing are formed in Pressure gelling technology can achieve better heat dissipation and a reduction in manufacturing costs.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Wendelfeder1 coil spring
2 Federträger2 spring supports
2' radialer Teller2 ' radial plate
3 Stoßdämpfer3 shock absorbers
4 Stoßdämpferrohr4 shock absorber tube
5 Kolbenstange5 piston rod
6 Bauteil des Fahrzeugaufbaus6 Component of the vehicle body
7 Mutter7 mother
8 Anschlussteil8 connecting part
9 Schraubbolzen9 bolts
10 Verstellvorrichtung10 adjusting device
11 Stator11 stator
12 Rotor12 rotor
13 Luftspalt13 air gap
14 Gehäuse14 housing
14' Gehäuseinnenteil14 'inner housing part
15 Kugellager15 ball bearings
16 Nadellager16 needle bearings
17 Gewindespindel17 threaded spindle
18 Gewindemutter18 threaded nut
19 radialer Ansatz19 radial approach
20 oberer Endbereich20 upper end area
21 Wälzlager21 rolling bearings
22 Kugeln22 balls
23 flexible Blechmembran23 flexible sheet membrane
24 Schweißpunkt24 spot weld
25 Schweißpunkt25 spot weld
26 Teil Getriebeverzahnung26 part gear teeth
Getriebeverzahnunggear teeth
Planetenradplanet
Achseaxis
Lager oberer TeilBearing upper part
Lager camp

Claims

Patentansprüche claims
1 . Fahrzeugfahrwerk mit einem Federträger zur Abstützung einer zwischen zwei Federtellern (2) verspannten Wendelfeder ( 1 ) und einem Schwingungsdämpfer (3), bei dem ein Bereich der Kolbenstange (5) und/oder des Dämpferrohres (4) innerhalb der Wendelfeder (1 ) angeordnet ist, wobei mindestens ein Federteller (2) mittels einer Antriebseinheit, bestehend aus einem aus Stator (1 3) und Rotor (1 2) gebildeten Ring- Elektromotor und einem aus einer Gewindespindel (1 7) und einer Gewindemutter (1 8) gebildeten Getriebe, axial verstellbar ist, dadurch gekennzeichnet, dass die Gewindemutter (18) und zumindest auch ein Teil der Gewindespindel (1 7) einerseits radial innerhalb der Wendelfeder (1 ) und andererseits radial im Bereich der axialen Erstreckung des Ring- Elektromotors vorgesehen sind.1 . Vehicle chassis with a spring support for supporting a coil spring (1) clamped between two spring plates (2) and a vibration damper (3), in which an area of the piston rod (5) and / or the damper tube (4) is arranged within the coil spring (1) , wherein at least one spring plate (2) by means of a drive unit, consisting of a ring electric motor formed from a stator (1 3) and rotor (1 2) and a gear unit formed from a threaded spindle (1 7) and a threaded nut (1 8), is axially adjustable, characterized in that the threaded nut (18) and at least part of the threaded spindle (1 7) are provided on the one hand radially within the helical spring (1) and on the other hand radially in the area of the axial extent of the ring electric motor.
2. Fahrzeugfahrwerk nach Anspruch 1 , dadurch gekennzeichnet, dass die Gewindemutter (1 8) im Bereich des Ring-Elektromotors einen radialen Teller (2 ') trägt, der zur Lagerung des einen Endbereiches der Wendelfeder (1 ) vorgesehen ist2. Vehicle chassis according to claim 1, characterized in that the threaded nut (1 8) carries a radial plate (2 ' ) in the region of the ring electric motor, which is provided for mounting the one end region of the helical spring (1)
3. Fahrzeugfahrwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ring-Elektromotor über ein, insbesondere als Wälzlager ausgebildetes Lager (21 ) mit der Gewindespindel (17) in Wirkverbindung steht.3. Vehicle chassis according to claim 1 or 2, characterized in that the ring electric motor is in operative connection with the threaded spindle (17) via a bearing (21), in particular as a roller bearing.
4. Fahrzeugfahrwerk nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Rotor ( 1 2) des Ring-Elektromotors mit der Gewindespindel ( 17) über einen das Lager (21 ) tragenden radialen Ansatz (1 9) in Wirkverbindung steht. 4. Vehicle chassis according to one of claims 1 to 3, characterized in that the rotor (1 2) of the ring electric motor with the threaded spindle (17) via a bearing (21) carrying radial projection (1 9) is operatively connected.
5. Fahrzeugfahrwerk nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Rotor (12) über ein radial- und rotationssteifes, axial und kardanisch weiches Bauteil mit der Gewindespindel (1 7) in Wirkverbindung steht.5. Vehicle chassis according to one of claims 1 to 4, characterized in that the rotor (12) is in operative connection with the threaded spindle (1 7) via a radially and rotationally rigid, axially and gimbally soft component.
6. Fahrzeugfahrwerk nach Anspruch 5, dadurch gekennzeichnet, dass der Rotor (1 2) über eine flexible Blechmembran (23) mit der Gewindespindel (1 7) in Wirkverbindung steht.6. Vehicle chassis according to claim 5, characterized in that the rotor (1 2) via a flexible sheet metal membrane (23) with the threaded spindle (1 7) is operatively connected.
7. Fahrzeugfahrwerk nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Ring-Elektromotor axial oberhalb der Wendelfeder (1 ) angeordnet ist und von seinen radialen Abmessungen her etwa im Durchmesserbereich der Wendelfeder (1 ) verbleibt.7. Vehicle chassis according to one of claims 1 to 6, characterized in that the ring electric motor is arranged axially above the coil spring (1) and its radial dimensions remain approximately in the diameter range of the coil spring (1).
8. Fahrzeugfahrwerk nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Ring-Elektromotor im Bereich des oberen Federtellers (2) vorgesehen ist und die Wendelfeder (1 ) mit vorgebbarem radialen Abstand umgibt.8. Vehicle chassis according to one of claims 1 to 7, characterized in that the ring electric motor is provided in the region of the upper spring plate (2) and surrounds the coil spring (1) with a predetermined radial distance.
9. Fahrzeugfahrwerk nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zwischen den Ring-Elektromotor und das Kugelrollgetriebe ein Planetengetriebe geschaltet ist.9. Vehicle chassis according to one of claims 1 to 8, characterized in that a planetary gear is connected between the ring electric motor and the ball rolling gear.
10. Fahrzeugfahrwerk nach Anspruch 9, dadurch gekennzeichnet, dass die Getriebeverzahnung (27) des Sonnenrades an der die Kolbenstange umgebenden Hülse des Gehäuses (1 4) und die Getriebeverzahnung (28) des Außenrades am Gehäuseteil (14) des Rotors (1 2) angebracht und die Lagerung der Planetenräder (29) mit der Gewindespindel (1 7) des Kugelrollgetriebes verbunden ist. 10. Vehicle chassis according to claim 9, characterized in that the gear teeth (27) of the sun gear on the piston rod surrounding sleeve of the housing (1 4) and the gear teeth (28) of the outer wheel on the housing part (14) of the rotor (1 2) attached and the bearing of the planet gears (29) is connected to the threaded spindle (1 7) of the ball rolling gear.
1 1 . Fahrzeugfahrwerk nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass eines der gegeneinander rotierenden Teile mit einer Bremseinrichtung ausgebildet ist.1 1. Vehicle chassis according to one of claims 1 to 10, characterized in that one of the parts rotating against each other is formed with a braking device.
1 2. Fahrzeugfahrwerk nach Anspruch 1 1 , dadurch gekennzeichnet, dass der Rotor (1 2) des Ring-Elektromotors mit einer Bremseinrichtung ausgebildet ist.1 2. Vehicle chassis according to claim 1 1, characterized in that the rotor (1 2) of the ring electric motor is formed with a braking device.
1 3. Fahrzeugfahrwerk nach Anspruch 1 1 oder Anspruch 1 2, dadurch gekennzeichnet, dass die Bremseinrichtung elektrisch oder elektromechanisch betrieben wird.1 3. Vehicle chassis according to claim 1 1 or claim 1 2, characterized in that the braking device is operated electrically or electromechanically.
14. Fahrzeugfahrwerk nach einem oder mehreren der Ansprüche 1 bis 1 3, dadurch gekennzeichnet, dass das der Anbindung an den Rotor (1 2) des Ring-Elektromotors gegenüber liegende Ende der Gewindespindel (17) auf der Kolbenstange (5) drehbar gelagert ist.14. Vehicle chassis according to one or more of claims 1 to 1 3, characterized in that the connection to the rotor (1 2) of the ring electric motor opposite end of the threaded spindle (17) is rotatably mounted on the piston rod (5).
1 5. Fahrzeugfahrwerk nach einem oder mehreren der Ansprüche 1 bis 1 3, dadurch gekennzeichnet, dass der Innendurchmesser der Gewindespindel (17) größer ist als der Außendurchmesser des Stoßdämpfergehäuses und dass die Gewindespindel (17) das Stoßdämpfergehäuse wenigstens abschnittsweise übergreift. 1 5. Vehicle chassis according to one or more of claims 1 to 1 3, characterized in that the inner diameter of the threaded spindle (17) is larger than the outer diameter of the shock absorber housing and that the threaded spindle (17) overlaps the shock absorber housing at least in sections.
EP03769465A 2002-11-28 2003-10-29 Vehicle chassis Withdrawn EP1567367A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10255764A DE10255764B3 (en) 2002-11-28 2002-11-28 Vehicle chassis for automobile has drive unit with annular motor and spindle drive used for axial adjustment of plate spring housed within coil spring
DE10255764 2002-11-28
PCT/EP2003/011969 WO2004048135A1 (en) 2002-11-28 2003-10-29 Vehicle chassis

Publications (1)

Publication Number Publication Date
EP1567367A1 true EP1567367A1 (en) 2005-08-31

Family

ID=30775618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03769465A Withdrawn EP1567367A1 (en) 2002-11-28 2003-10-29 Vehicle chassis

Country Status (8)

Country Link
US (1) US20060163863A1 (en)
EP (1) EP1567367A1 (en)
JP (1) JP2006507969A (en)
KR (1) KR20050071551A (en)
CN (1) CN1717340B (en)
AU (1) AU2003278150A1 (en)
DE (1) DE10255764B3 (en)
WO (1) WO2004048135A1 (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10237644B4 (en) * 2002-08-13 2006-01-19 Zf Sachs Ag Spring carrier with a height-adjustable spring plate
DE102004014336B3 (en) * 2004-03-22 2005-06-09 Thyssenkrupp Automotive Ag Automobile chassis with spring shock absorbers each provided with suspension spring, piston rod and damper sleeve, axially adjustable spring plate and energy store between spring plate and automobile body
WO2006012858A1 (en) * 2004-07-29 2006-02-09 Torsten Quade Coil-over suspension mechanism and method for adjusting the height of a motor vehicle
DE102005001735B4 (en) 2005-01-14 2006-10-26 Zf Friedrichshafen Ag spring support
DE102005001743B3 (en) * 2005-01-14 2006-07-06 Zf Friedrichshafen Ag Spring carrier for use between vehicle body and axel part, has threaded spindle with larger inner diameter than cylinder of vibration damper, so that cylinder can be deflected into threaded spindle
DE102005001742A1 (en) * 2005-01-14 2006-03-16 Zf Friedrichshafen Ag Shock absorbing strut, has spring carrier connected over bearing at component which is to be supported, where bearing has spherical support surfaces which permit pivoting of strut for supporting component
DE102005001736B3 (en) * 2005-01-14 2006-07-13 Zf Friedrichshafen Ag Method to drive a spring bearer with electric spring power adjustment in order to place load at required distance from support using actuator to exert force against bearing strength of spring
EP1681190B1 (en) 2005-01-14 2011-03-09 ZF Friedrichshafen AG Spring support with adjustable spring plate
DE102005001746B3 (en) * 2005-01-14 2006-07-13 Zf Friedrichshafen Ag Adjustable spring support has sensor in form of plate sensor whose input part is attached to electric motor rotor and whose output part is attached to stator side
DE102005001745B3 (en) * 2005-01-14 2006-07-13 Zf Friedrichshafen Ag Spring carrier consist of two building groups with carrier spring located between them and spring plates one of which has an actuator
DE102005001744B3 (en) 2005-01-14 2006-07-06 Zf Friedrichshafen Ag Spring carrier with adjustable spring plate
DE102005001740B3 (en) * 2005-01-14 2006-07-13 Zf Friedrichshafen Ag MacPherson strut unit with height-adjustable spring plate uses spring placed between two spring plates whose axial position can be adjusted by actuator driving a spindle
DE102005013019A1 (en) * 2005-03-22 2006-09-28 Zf Lenksysteme Gmbh Device for reducing vibrations on motor vehicle, has electric motor to drive pump that supplies oil to actuator
US7922181B2 (en) * 2006-03-09 2011-04-12 Honda Motor Co., Ltd. Vehicle height adjusting system
DE102007051299B4 (en) * 2007-03-14 2010-07-01 Audi Ag Height adjustment device for motor vehicles
DE102007027514A1 (en) * 2007-06-15 2008-12-18 Audi Ag Strut for a motor vehicle with an axially adjustable spring plate
DE202007008749U1 (en) 2007-06-20 2008-10-30 Asturia Automotive Systems Ag Base adjustment for vehicle suspensions
DE102007040734B4 (en) * 2007-08-29 2009-05-07 Audi Ag Suspension strut for a suspension of motor vehicles
DE102007059140B4 (en) * 2007-12-07 2010-11-11 Audi Ag Height adjustment on a suspension for motor vehicles
DE102008005294B3 (en) * 2008-01-19 2009-06-18 Zf Friedrichshafen Ag Adjustable spring carrier for vehicle, has two spring caps, between which spring is braced, where braking device is formed by clamping nut which engages in threaded spindle
DE102008023891A1 (en) * 2008-05-16 2009-11-19 Audi Ag Device for height adjustment of the body of a motor vehicle
DE102008053617A1 (en) * 2008-10-29 2010-05-06 Audi Ag Suspension for motor vehicles
DE102009017352B4 (en) 2009-04-14 2016-12-15 Audi Ag Suspension strut for suspension of motor vehicles
JP5261316B2 (en) * 2009-08-05 2013-08-14 カヤバ工業株式会社 Suspension device
US8807574B2 (en) * 2010-05-14 2014-08-19 Magna Steyr Fahrzeugtechnik Ag & Co Kg Spring-damper unit for height adjustment of a vehicle
US20130009350A1 (en) * 2011-07-08 2013-01-10 Friedrich Peter Wolf-Monheim Semiactive Wheel Suspension
DE102011090089A1 (en) * 2011-12-29 2013-07-04 Robert Bosch Gmbh Suspension strut of a motor vehicle
US8844943B2 (en) * 2012-12-17 2014-09-30 Hyundai Motor Company Electronic control suspension system for vehicles
KR101393768B1 (en) * 2012-12-26 2014-05-14 현대자동차주식회사 Electronic stability program for vehicle
DE102014213341B4 (en) * 2014-07-09 2022-06-15 Schaeffler Technologies AG & Co. KG Device for adjusting the height of a vehicle body
CN105156553A (en) * 2015-09-08 2015-12-16 同济大学 Damper with equivalent rotating inertia mass
DE102015119692A1 (en) * 2015-11-13 2017-05-18 Thyssenkrupp Ag Recording arrangement of a suspension spring for a strut
DE102016202314B4 (en) * 2016-02-16 2024-05-16 Zf Friedrichshafen Ag Adjustable spring carrier
CN106114116A (en) * 2016-08-11 2016-11-16 方勇海 A kind of active balancing formula automobile suspension system
US11149197B2 (en) 2018-02-22 2021-10-19 Bambu Vault Llc Persistent infrared phosphors
RU2705604C1 (en) * 2019-02-12 2019-11-11 Алексей Васильевич Гаврилов Spring suspension with adjustable road clearance
KR102648182B1 (en) * 2019-07-08 2024-03-15 현대자동차주식회사 Rough road detection and damper control system and method thereof
CN113586651A (en) * 2020-04-30 2021-11-02 比亚迪股份有限公司 Shock absorber and vehicle
JP2022154362A (en) * 2021-03-30 2022-10-13 本田技研工業株式会社 suspension device

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625388A (en) * 1947-10-18 1953-01-13 Chrysler Corp Adjustable suspension for vehicles
JPS5511967A (en) * 1978-07-14 1980-01-28 Honda Motor Co Ltd Suspension spring device for vehicle
US4463291A (en) * 1979-12-31 1984-07-31 Andale Company Automatic control system and valve actuator
JPS60236815A (en) * 1984-05-09 1985-11-25 Fuji Heavy Ind Ltd Car height adjusting device for car
US4830395A (en) * 1988-02-22 1989-05-16 Foley Jimmy D Stabilizer system for racing cars
US5060959A (en) * 1988-10-05 1991-10-29 Ford Motor Company Electrically powered active suspension for a vehicle
US5491633A (en) * 1991-05-20 1996-02-13 General Motors Corporation Position sensor for electromechanical suspension
US5350983A (en) * 1992-12-21 1994-09-27 Ford Motor Company Suspension damper with integrated controls
US5306031A (en) * 1993-04-06 1994-04-26 Quinn Thomas N Automatic wedge chassis adjuster
JPH08197931A (en) * 1995-01-23 1996-08-06 Honda Motor Co Ltd Active suspension device
DE19510032C2 (en) * 1995-03-20 1999-10-21 Mannesmann Sachs Ag Spring support within a vehicle chassis
US5553836A (en) * 1995-05-11 1996-09-10 Patentials Incorporated Adjustable suspension system
NL1006543C2 (en) * 1997-07-10 1999-01-12 Skf Ind Trading & Dev Electric actuator and caliper with such an actuator.
JP3346243B2 (en) * 1997-10-07 2002-11-18 三菱自動車工業株式会社 Vehicle height adjustment device
CN1279168A (en) * 1999-06-24 2001-01-10 付景满 Suspension lifter
DE19955410B4 (en) * 1999-11-18 2011-05-05 Bayerische Motoren Werke Aktiengesellschaft Device for the active suspension of a motor vehicle wheel on a vehicle body
WO2002008001A1 (en) * 2000-07-26 2002-01-31 Continental Teves Ag & Co. Ohg Device for regulating the movements of the superstructure of a motor vehicle
DE10101694C5 (en) * 2001-01-15 2005-05-12 Thyssenkrupp Automotive Ag The vehicle chassis
US7461369B2 (en) 2001-03-30 2008-12-02 Bmc Software, Inc. Java application response time analyzer
DE10237644B4 (en) * 2002-08-13 2006-01-19 Zf Sachs Ag Spring carrier with a height-adjustable spring plate
US6902045B2 (en) * 2003-04-03 2005-06-07 Delphi Technologies, Inc. Apparatus, system and method for a vehicle suspension system
US7922181B2 (en) * 2006-03-09 2011-04-12 Honda Motor Co., Ltd. Vehicle height adjusting system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004048135A1 *

Also Published As

Publication number Publication date
WO2004048135A1 (en) 2004-06-10
US20060163863A1 (en) 2006-07-27
AU2003278150A1 (en) 2004-06-18
CN1717340B (en) 2010-05-12
CN1717340A (en) 2006-01-04
DE10255764B3 (en) 2004-02-26
JP2006507969A (en) 2006-03-09
KR20050071551A (en) 2005-07-07

Similar Documents

Publication Publication Date Title
DE10255764B3 (en) Vehicle chassis for automobile has drive unit with annular motor and spindle drive used for axial adjustment of plate spring housed within coil spring
EP1729985B1 (en) Vehicle chassis
EP2231427B1 (en) Spring strut arrangement for wheel suspensions of motor vehicles
DE112011101650B4 (en) Spring damper unit for height adjustment of a vehicle
EP1953013B1 (en) Height adjustment device for wheel suspensions in motor vehicles
DE112010005077B4 (en) SPRING-DAMPER UNIT
EP1353813B1 (en) Spring carrier
WO2018077345A1 (en) Electromechanical chassis actuator
DE102007051299B4 (en) Height adjustment device for motor vehicles
DE102009039164A1 (en) Steering device, in particular for a rear-wheel steering
DE10120102A1 (en) Active chassis with electric actuator and damper
DE10237644A1 (en) Spring carrier with a height-adjustable spring plate
EP1927486A2 (en) Height adjustment device for wheel suspensions in motor vehicles
EP2003002B1 (en) Suspension strut for a motor vehicle with an axially adjustable spring disc
DE102008023891A1 (en) Device for height adjustment of the body of a motor vehicle
EP1970228B1 (en) Height adjustment device for motor vehicles
DE102010036238A1 (en) Shock absorber unit e.g. tie rod, for use in wheel suspension system for vertical adjustment of motor car, has locking pin in energized state of actuator during open position and in current-free state of actuator during blocking position
WO2008148746A1 (en) Height adjustable spring bearing
WO2018149560A1 (en) Support bearing of a vehicle suspension spring
EP1681186B1 (en) Spring support with adjustable spring plate
DE102018128595A1 (en) Device for connecting a shock absorber to a body
EP3765316B1 (en) Vehicle suspension having controllable ground clearance and rigidity
DE102005001736B3 (en) Method to drive a spring bearer with electric spring power adjustment in order to place load at required distance from support using actuator to exert force against bearing strength of spring
DE102019213327A1 (en) System for adjusting the vehicle height
EP3653411A1 (en) Apparatus for connecting a strut with a car body

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: 20050628

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20090701

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: 20091112