DE102009004150A1 - Height adjustment method for vehicles, involves changing transmission ratio from wheel to damper in simultaneous manner, where transmission ratio is changed by variation of spring linkage point through actuator - Google Patents

Height adjustment method for vehicles, involves changing transmission ratio from wheel to damper in simultaneous manner, where transmission ratio is changed by variation of spring linkage point through actuator Download PDF

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Publication number
DE102009004150A1
DE102009004150A1 DE200910004150 DE102009004150A DE102009004150A1 DE 102009004150 A1 DE102009004150 A1 DE 102009004150A1 DE 200910004150 DE200910004150 DE 200910004150 DE 102009004150 A DE102009004150 A DE 102009004150A DE 102009004150 A1 DE102009004150 A1 DE 102009004150A1
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DE
Germany
Prior art keywords
transmission ratio
actuator
damper
wheel
height adjustment
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Withdrawn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
DE200910004150
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German (de)
Inventor
Anton Pfeifer
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to DE200910004150 priority Critical patent/DE102009004150A1/en
Publication of DE102009004150A1 publication Critical patent/DE102009004150A1/en
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • 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
    • B60G2204/127—Mounting of springs or dampers with the mounting of springs or dampers moving so that the direction of the related force vector can be changed, thus contributing to a variation of the loading of the wheel
    • 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
    • B60G2204/423—Rails, tubes, or the like, for guiding the movement of suspension elements
    • B60G2204/4232—Sliding mounts
    • 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
    • B60G2204/424—Mechanisms for force adjustment, e.g. constant force mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/10—Damping action or damper
    • 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
    • B60G2500/22—Spring constant
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The height adjustment method involves changing the transmission ratio from a wheel to a damper in a simultaneous manner. The transmission ratio is changed by variation of a spring linkage point (X-a) through an actuator operated in a mechanical, hydraulic, pneumatic or electrical manner. The actuator is designed as a rotatable lever. An independent claim is also included for an actuator.

Description

Um ein Fahrzeug, vorrangig ein geländegängiges Fahrzeug wechselnden Fahrbedingungen anzupassen ist es sinnvoll, die Fahrzeughöhe (Bodenfreiheit) mittels einer Höhenverstellung zu verändern.Around a vehicle, primarily an off-road vehicle adapt to changing driving conditions, it makes sense, the vehicle height (ground clearance) by means of a height adjustment to change.

Eine solche Höhenverstellung kann als Positionsschalter (z. B. hoch-tief) oder automatisch über aktive bzw. semiaktive Ansteuerung betrieben werden.A such height adjustment can be used as position switch (eg high-low) or automatically via active or semi-active control operated.

Derzeit sind verschiedene Systeme am Markt um die Bodenfreiheit zu verändern, z. B. hydraulische oder pneumatische Änderung der Federvorspannung.Currently are various systems on the market to change the ground clearance, z. B. hydraulic or pneumatic change of the spring preload.

Damit lässt sich die Fahrzeughöhe verändern, die Feder- und Dämpferrate am Rad kann man damit jedoch nicht verändern. Außerdem wird das Verhältnis vom positiven zum negativen Federweg ungünstig beeinflusst.In order to let yourself the vehicle height change, the spring and damper rate But you can not change that on the bike. In addition, the ratio of positive to the negative travel unfavorably influenced.

Der Erfindung liegt die Idee zugrunde, die Fahrzeughöhe (Bodenfreiheit) so zu verändern, dass dabei sowohl der Federweg, die Federrate und die Dämpferrate zur Fahrzeughöhe passend mit verändert werden. Das Verhältnis Negativ- zu Positivfederweg bleibt dabei weitgehend erhalten.Of the Invention is based on the idea to change the vehicle height (ground clearance) so that it both the travel, the spring rate and the damper rate to the vehicle height suitable with changed become. The relationship Negative to positive spring travel remains largely intact.

Dies wird erreicht durch Verändern eines der beiden Federbeinanlenkpunkte.This is achieved by changing one of the two strut anchor points.

Die Zeichnungen 1a und 1b zeigen eine Lösung, die Vorrangig im Motorsport Verwendung finden könnte. Hierbei wird ein liegendes Federbein mittels eines Druckstabes (pushrod) über einen Hubzylinder (H) der als ”Wippe” dient, angesteuert. Durch Aus- oder Einfahren dieses Hubzylinders ändert sich die Fahrzeughöhe und gleichzeitig die Übersetzung Radweg durch Federbeinweg. Die Zeichnung 1a zeigt den eingefahrenen Zylinder in Stellung xa, Fahrzeug angehoben für große Bodenfreiheit, niedrige Dämpfer- und Federrate am Rad.The drawings 1a and 1b show a solution that could find priority in motorsport use. Here, a lying strut by means of a push rod (pushrod) via a lifting cylinder (H) which serves as a "rocker", driven. By extending or retracting this lift cylinder changes the vehicle height and at the same time the translation cycle path by strut way. The drawing 1a shows the retracted cylinder in position x a , vehicle raised for high ground clearance, low damper and spring rate on the wheel.

Zeichnung 1b zeigt das Fahrzeug in abgesenkter Position xb mit entsprechend höherer Feder- und Dämpferrate am Rad.Drawing 1b shows the vehicle in lowered position x b with a correspondingly higher spring and damper rate on the wheel.

Die Zeichnung 2a und 2b zeigen eine Variante, bei der die Federbeinanlenkpunkte xa und xb durch drehen eines Kipphebels um ”M” angesteuert werden. In Stellung xa ist das Fahrzeug angehoben, der Federweg wird größer, die Feder- und Dämpferrte am Rad wird kleiner. In Stellung xb ist das Fahrzeug abgesenkt, der Federweg wird kürzer, die Feder- und Dämpferrate am Rad wird größer.The drawing 2a and 2b show a variant in which the strut connecting points x a and x b are controlled by turning a rocker arm to "M". In position x a , the vehicle is raised, the spring travel is greater, the spring and Dämpferrte the wheel is smaller. In position x b , the vehicle is lowered, the spring travel is shorter, the spring and damper rate at the wheel is larger.

Die Ausführungen 3a und 3b zeigen die Möglichkeiten, das am Aufbau befestigte Dämpferlager verschiebbar auszuführen.The versions 3a and 3b show the possibilities slidably mounted on the body damper bearing perform.

In Pos. xa ist das Fahrzeug angehoben, der Federweg vergrößert sich, die Feder- und Dämpferrate am Rad verkleinern sich. Durch verschieben zu Pos. xb senkt sich das Fahrzeug ab, der Federweg verringert sich und die Feder-, Dämpferrate vergrößert sich.In Pos. X a , the vehicle is raised, the travel increases, the spring and damper rate on the wheel decrease. By moving to Pos. X b , the vehicle lowers, the travel decreases and the spring, damper rate increases.

Die Zeichnungen 4a und 4b zeigen ein verschiebbares Federbeinlager an der Radaufhängung. Hierbei zeigt die Stellung xa das angehobene Fahrzeug mit vergrößertem Federweg und niedriger Feder-, Dämpferrate am Rad.The drawings 4a and 4b show a sliding strut bearing on the suspension. Here, the position x a shows the lifted vehicle with increased spring travel and low spring, damper rate on the wheel.

Alle diese Verstellmöglichkeiten haben gemeinsam, dass das Verhältnis von Negativ- zu Positivfederweg in einem günstigen Bereich bleibt, sowohl im ausgefederten als auch im eingefederten Zustand.All these adjustment options have in common that the relationship from negative to positive suspension travel remains in a favorable range, both in the rebounded as well as in the compressed state.

Claims (4)

Höhenverstellung für Fahrzeuge bei gleichzeitiger Veränderung des Übersetzungsverhältnisses vom Rad zum Dämpfer, durch Veränderung eines Federbeinanlenkpunktes mittels eines Stellgliedes, das mechanisch, hydraulisch, pneumatisch oder elektrisch betätigt sein kann, angesteuert durch Bedienung aus dem Fahrzeug, während der Fahrt oder im Stand, als einfache Hoch-, und Tiefausführung oder als geregelte aktive bzw. semiaktive Ansteuerung, gekennzeichnet durch:height adjustment for vehicles with simultaneous change the translation ratio of Wheel to the damper, through change a suspension strut point by means of an actuator, the mechanical, hydraulically, pneumatically or electrically actuated, controlled by operation from the vehicle, while driving or standing, as a simple high and low execution or as regulated active or semi-active control by: Ein Stellglied nach Anspruch 1, das ein als Umlenkhebel, doppelseitig oder auch einseitig mit Federspeicher, wirkender Hubzylinder ist.An actuator according to claim 1, which serves as a lever, double-sided or one-sided with spring accumulator, acting lifting cylinder is. Ein Stellglied nach Anspruch 1, das drehbar als Kipphebel ausgeführt ist.An actuator according to claim 1, rotatably acting as a rocker arm accomplished is. Ein Stellglied nach Anspruch 1, das ein, auf einem Führungsteil, verschiebbares Federbeinlager aufweist, welches sowohl am Fahrzeugaufbau, als auch an der Radaufhängung angebracht sein kann. Dieses Führungsteil kann in jeder beliebigen zwei- bzw. dreidimensionale Kontur ausgeführt sein.An actuator according to claim 1, which is a, on a Guide part, sliding strut bearing has, which both on the vehicle body, as well as on the suspension can be appropriate. This guide part can be in any be executed two- or three-dimensional contour.
DE200910004150 2009-01-09 2009-01-09 Height adjustment method for vehicles, involves changing transmission ratio from wheel to damper in simultaneous manner, where transmission ratio is changed by variation of spring linkage point through actuator Withdrawn DE102009004150A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200910004150 DE102009004150A1 (en) 2009-01-09 2009-01-09 Height adjustment method for vehicles, involves changing transmission ratio from wheel to damper in simultaneous manner, where transmission ratio is changed by variation of spring linkage point through actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910004150 DE102009004150A1 (en) 2009-01-09 2009-01-09 Height adjustment method for vehicles, involves changing transmission ratio from wheel to damper in simultaneous manner, where transmission ratio is changed by variation of spring linkage point through actuator

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DE102009004150A1 true DE102009004150A1 (en) 2011-02-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800005419A1 (en) * 2018-05-16 2019-11-16 AUTOMOTIVE SUSPENSION FOR SPORTS CAR

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800005419A1 (en) * 2018-05-16 2019-11-16 AUTOMOTIVE SUSPENSION FOR SPORTS CAR
EP3569428A1 (en) * 2018-05-16 2019-11-20 FERRARI S.p.A. Automotive suspension for a sports car
US11052714B2 (en) 2018-05-16 2021-07-06 Ferrari S.P.A. Automotive suspension for a sport car

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