DE102014219338A1 - Elastomeric auxiliary spring in the wheel suspension of a vehicle - Google Patents
Elastomeric auxiliary spring in the wheel suspension of a vehicle Download PDFInfo
- Publication number
- DE102014219338A1 DE102014219338A1 DE102014219338.9A DE102014219338A DE102014219338A1 DE 102014219338 A1 DE102014219338 A1 DE 102014219338A1 DE 102014219338 A DE102014219338 A DE 102014219338A DE 102014219338 A1 DE102014219338 A1 DE 102014219338A1
- Authority
- DE
- Germany
- Prior art keywords
- spring
- suspension
- auxiliary spring
- additional
- vehicle
- 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.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000013016 damping Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
- B60G11/48—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs
- B60G11/52—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs having helical, spiral or coil springs, and also rubber springs
- B60G11/54—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs having helical, spiral or coil springs, and also rubber springs with rubber springs arranged within helical, spiral or coil springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
- B60G11/48—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs
- B60G11/62—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs having both rubber springs and fluid springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
-
- 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
- B60G2202/10—Type of spring
- B60G2202/14—Plastic spring, e.g. rubber
- B60G2202/143—Plastic spring, e.g. rubber subjected to compression
-
- 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
- B60G2202/10—Type of spring
- B60G2202/15—Fluid 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
- B60G2204/40—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Die Erfindung betrifft eine elastomere Zusatzfeder in der Radaufhängung eines Fahrzeugs, welche funktional parallel zu einer dem jeweiligen Rad zugordneten Tragfeder solchermaßen angeordnet ist, dass die Zusatzfeder nach Überschreiten eines gewissen Federwegs der Tragfeder zum Eingriff kommt und welche ein nicht-newtonsches Fluid enthält. Vorzugsweise sind in der Zusatzfeder zumindest zwei durch einen Kanal miteinander verbundene Hohlräume für die Aufnahme des nicht-newtonschen Fluids vorgesehen, wobei der Kanal eine zusätzliche Drosselstelle aufweisen kann.The invention relates to an additional elastic spring in the suspension of a vehicle, which is functionally arranged in parallel to a respective wheel zugordneten suspension spring in such a way that the additional spring after exceeding a certain spring travel of the suspension spring comes into engagement and which contains a non-Newtonian fluid. Preferably, at least two interconnected by a channel cavities for receiving the non-Newtonian fluid are provided in the auxiliary spring, wherein the channel may have an additional throttle point.
Description
Die Erfindung betrifft eine elastomere Zusatzfeder in der Radaufhängung eines Fahrzeugs, welche funktional parallel zu einer dem jeweiligen Rad zugordneten Tragfeder solchermaßen angeordnet ist, dass die Zusatzfeder nach Überschreiten eines gewissen Federwegs der Tragfeder zum Eingriff kommt. Zum Stand der Technik wird beispielshalber auf die
In den Radaufhängungen modernerer Fahrzeuge mit Stoßdämpfern (genauer Schwingungsdämpfern) ist am Ende der Kolbenstange dieses Stoßdämpfers jeweils eine annähernd zylinderförmige Zusatzfeder als Anschlagpuffer vorgesehen. Solche Zusatzfedern sind üblicherweise aus mehreren im Querschnitt anwachsenden Wellenelementen aufgebaut und bestehen aus einem geschäumten Kunststoff. Solche Zusatzfedern können aber auch in sog. aufgelöster Anordnung angebracht sein, wonach solche als Anschlagpuffer wirkende elastomere Zusatzfedern nicht auf der Kolbenstange eines Dämpfers, sondern beispielsweise zwischen Achslenkern und Karosserieelementen vorgesehen sind. Grundsätzlich wirken solche elastomere Zusatzfedern als Federelement mit integrierter Dämpfung.In the suspension of modern vehicles with shock absorbers (exact vibration dampers) an approximately cylindrical auxiliary spring is provided as a stop buffer at the end of the piston rod of this shock absorber. Such additional springs are usually constructed of a plurality of growing in cross-section shaft elements and consist of a foamed plastic. However, such additional springs can also be mounted in so-called. Dissolved arrangement, according to which such acting as a stop buffer elastomeric auxiliary springs are not provided on the piston rod of a damper, but for example between axle links and body panels. Basically, such elastomeric auxiliary springs act as a spring element with integrated damping.
Weiteren Stand der Technik, jedoch nicht für Radaufhängungen nach dem Oberbegriff des Anspruchs 1, bilden Gummilager mit integrierten flüssigkeitsführenden Kanälen oder Hohlräumen, welche sog. „Hydrolager” damit nichtlineare Dämpfungseigenschaften aufweisen, vgl. bspw.
Für die Anwendung als Motorlager ist es weiterhin bekannt, als (solche) Flüssigkeit ein nicht-newtonsches Fluid vorzusehen (siehe die o. g.
Zurückkommend auf eine elastomere Zusatzfeder in der Radaufhängung eines Fahrzeugs muss bei deren Auslegung ein Zielkonflikt zwischen dem Fahrkomfort des Fahrzeugs und der Erfüllung ihrer Funktion als Anschlagpuffer aufgelöst werden. Eine weichere Feder-Kennlinie der Zusatzfeder trägt nämlich positiv zum Fahrkomfort bei, während mit einer härteren Feder-Kennlinie in die Radaufhängung eingebrachte Energie verstärkt gespeichert oder abgebaut werden kann, womit insbesondere bei der Überfahrt eines vertikalen Hindernisses der Fahrzeug-Aufbau und die Radaufhängung besser vor einer Beschädigung geschützt sind.Coming back to an elastomeric auxiliary spring in the suspension of a vehicle must be resolved in their interpretation, a conflict between the ride comfort of the vehicle and the fulfillment of its function as a stop buffer. A softer spring characteristic of the auxiliary spring contributes positively to the ride comfort, while with a harder spring characteristic introduced into the suspension energy can be stored or removed reinforced, which especially in the passage of a vertical obstacle of the vehicle body and the suspension better are protected from damage.
Hiermit soll nun eine Möglichkeit zur Lösung des vorstehend genannten Zielkonflikts aufgezeigt werden (= Aufgabe der vorliegenden Erfindung).Hereby, a possibility for the solution of the above mentioned conflict of objectives should be pointed out (= object of the present invention).
Die Lösung dieser Aufgabe ist für eine elastomere Zusatzfeder nach dem Oberbegriff des Anspruchs 1 dadurch gekennzeichnet, dass die Zusatzfeder ein nicht-newtonsches Fluid enthält. Insbesondere handelt es sich dabei um ein Fluid mit dilatanter Eigenschaft, d. h. um ein scherverdickendes Fluid, dessen Viskosität bei steigenden Schergeschwindigkeiten ansteigt. Wirkt also auf eine solche erfindungsgemäße Zusatzfeder ein kurzer harter Stoß mit relativ hoher Geschwindigkeit ein, wird diese mit einer härteren Feder-Kennlinie wirksam als bei der Einwirkung eines vergleichbar kräftigen Stoßes mit niedrigerer Geschwindigkeit.The solution to this problem is for an elastomeric auxiliary spring according to the preamble of
Eine erste vorteilhafte Weiterbildung geht aus der beigefügten Schnitt-Skizze eines Ausführungsbeispiels hervor, welches im Folgenden erläutert wird:
Eine hinsichtlich Ihrer Außenkontur übliche elastomere Zusatzfeder
A standard with regard to your outer contour elastomeric
Wie die Skizze zeigt, sind in der relativ dicken Wand der im Hinblick auf die Durchführung der Kolbenstange
Mit einer härteren Federkennlinie und einer höheren Dämpfung wird eine eingeleitete kinetische Energie in der erfindungsgemäßen Zusatzfeder verbessert abgebaut, so dass solche Energie nicht mehr von angrenzenden Bauteilen aufgenommen werden muss. Hiermit ergibt sich eine deutliche Schutzfunktion insbesondere für die Karosserie und weitere angrenzende Bauteile.With a harder spring characteristic and a higher damping, an introduced kinetic energy in the additional spring according to the invention is reduced in an improved manner, so that such energy no longer has to be absorbed by adjacent components. This results in a clear protective function, in particular for the body and other adjacent components.
Selbstverständlich kann eine Vielzahl von Details abweichend von diesem Ausführungsbeispiel gestaltet sein, ohne den Inhalt der Patentansprüche zu verlassen. So können bspw. die besagten Hohlräume
Nicht dargestellt ist eine vorteilhafte Weiterbildung, wonach im Kanal
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 10352077 A1 [0001] DE 10352077 A1 [0001]
- FR 2834027 A [0001] FR 2834027 A [0001]
- US 4576366 [0001, 0004] US 4576366 [0001, 0004]
- DE 68903231 T2 [0001, 0003] DE 68903231 T2 [0001, 0003]
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014219338.9A DE102014219338A1 (en) | 2014-09-24 | 2014-09-24 | Elastomeric auxiliary spring in the wheel suspension of a vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014219338.9A DE102014219338A1 (en) | 2014-09-24 | 2014-09-24 | Elastomeric auxiliary spring in the wheel suspension of a vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102014219338A1 true DE102014219338A1 (en) | 2016-03-24 |
Family
ID=55444738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102014219338.9A Pending DE102014219338A1 (en) | 2014-09-24 | 2014-09-24 | Elastomeric auxiliary spring in the wheel suspension of a vehicle |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102014219338A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016013708A1 (en) | 2016-11-17 | 2018-05-17 | Daimler Ag | Storage device, in particular engine mount, for a vehicle |
DE102019134646B3 (en) * | 2019-12-17 | 2021-05-27 | Audi Ag | Additional spring for a wheel suspension of a motor vehicle |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3234469A1 (en) * | 1982-09-17 | 1984-03-22 | Mataro Co. Ltd., Georgetown, Grand Cayman Islands | Damping device |
US4576366A (en) | 1982-09-28 | 1986-03-18 | Compagnie des Produits Industriels de l'Quest (C.P.I.O.) | Antivibration elastic support |
US4711463A (en) * | 1986-06-09 | 1987-12-08 | General Motors Corporation | Vehicle suspension strut and upper mount assembly therefor |
DE68903231T2 (en) | 1988-03-08 | 1993-03-04 | Citroen Sa | ELASTIC CONNECTION WITH HYDRAULIC STiffener. |
FR2834027A1 (en) | 2001-12-26 | 2003-06-27 | Tokai Rubber Ind Ltd | Vibration attenuation device for automobile suspension comprises helicoidal spring seat and rubber thick tube stop with protuberances which are compressed and housed in seat tubular part during axial vibrations |
DE10352077A1 (en) | 2003-11-07 | 2005-06-09 | Volkswagen Ag | Rubber spring for use with vibration dampers has tubular rubber body fitted at top with cap, to which metal rod is attached which passes through body |
DE60119217T2 (en) * | 2000-05-18 | 2007-02-22 | Volvo Personvagnar Ab | Suspension for a vehicle |
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2014
- 2014-09-24 DE DE102014219338.9A patent/DE102014219338A1/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3234469A1 (en) * | 1982-09-17 | 1984-03-22 | Mataro Co. Ltd., Georgetown, Grand Cayman Islands | Damping device |
US4576366A (en) | 1982-09-28 | 1986-03-18 | Compagnie des Produits Industriels de l'Quest (C.P.I.O.) | Antivibration elastic support |
US4711463A (en) * | 1986-06-09 | 1987-12-08 | General Motors Corporation | Vehicle suspension strut and upper mount assembly therefor |
DE68903231T2 (en) | 1988-03-08 | 1993-03-04 | Citroen Sa | ELASTIC CONNECTION WITH HYDRAULIC STiffener. |
DE60119217T2 (en) * | 2000-05-18 | 2007-02-22 | Volvo Personvagnar Ab | Suspension for a vehicle |
FR2834027A1 (en) | 2001-12-26 | 2003-06-27 | Tokai Rubber Ind Ltd | Vibration attenuation device for automobile suspension comprises helicoidal spring seat and rubber thick tube stop with protuberances which are compressed and housed in seat tubular part during axial vibrations |
DE10352077A1 (en) | 2003-11-07 | 2005-06-09 | Volkswagen Ag | Rubber spring for use with vibration dampers has tubular rubber body fitted at top with cap, to which metal rod is attached which passes through body |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016013708A1 (en) | 2016-11-17 | 2018-05-17 | Daimler Ag | Storage device, in particular engine mount, for a vehicle |
DE102019134646B3 (en) * | 2019-12-17 | 2021-05-27 | Audi Ag | Additional spring for a wheel suspension of a motor vehicle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: B60G0013060000 Ipc: B60G0015000000 |
|
R163 | Identified publications notified | ||
R012 | Request for examination validly filed |