DE102013107826A1 - Air spring for a motor vehicle - Google Patents
Air spring for a motor vehicle Download PDFInfo
- Publication number
- DE102013107826A1 DE102013107826A1 DE102013107826.5A DE102013107826A DE102013107826A1 DE 102013107826 A1 DE102013107826 A1 DE 102013107826A1 DE 102013107826 A DE102013107826 A DE 102013107826A DE 102013107826 A1 DE102013107826 A1 DE 102013107826A1
- Authority
- DE
- Germany
- Prior art keywords
- air spring
- space
- piston
- additional
- volume
- 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- Withdrawn
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Classifications
-
- 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
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
-
- 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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
-
- 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
- F16F9/38—Covers for protection or appearance
-
- 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
- B60G2202/152—Pneumatic spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/40—Constructional features of dampers and/or springs
- B60G2206/42—Springs
- B60G2206/424—Plunger or top retainer construction for bellows or rolling lobe type air springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Die vorliegende Erfindung betrifft eine Luftfeder (1) für ein Kraftfahrzeug mit einem Deckel (2) zur Anbindung der Luftfeder (1) an den Aufbau des Kraftfahrzeugs, mit einem Abrollkolben (3) und einem Anschlusskolben (4) zur Verbindung der Luftfeder (1) mit einem Rad des Kraftfahrzeugs, wobei der Abrollkolben (3) und der Anschlusskolben (4) mit einem Abrollbalg (5) verbunden sind und einen Luftfederraum (6) bilden. Zur Vermeidung von Druckspitzen im Luftfederraum (6), die den Abrollbalg (5) schädigen können, ist erfindungsgemäß vorgesehen, dass im Anschlusskolben (4) ein Zusatzraum (7) ausgebildet ist, dessen veränderbares Volumen freigebbar ist.The present invention relates to an air spring (1) for a motor vehicle with a cover (2) for connecting the air spring (1) to the structure of the motor vehicle, with a rolling piston (3) and a connecting piston (4) for connecting the air spring (1). with a wheel of the motor vehicle, wherein the rolling piston (3) and the connecting piston (4) are connected to a rolling bellows (5) and form an air spring space (6). To avoid pressure peaks in the air spring chamber (6), which may damage the rolling bellows (5), the invention provides that in the connecting piston (4) an additional space (7) is formed, the variable volume is releasable.
Description
Die vorliegende Erfindung betrifft eine Luftfeder für ein Kraftfahrzeug mit einem Deckel zur Anbindung der Luftfeder an den Aufbau des Kraftfahrzeugs, mit einem Abrollkolben und einem Anschlusskolben zur Verbindung der Luftfeder mit einem Rad des Kraftfahrzeugs, wobei der Abrollkolben und der Anschlusskolben mit einem Abrollbalg verbunden sind und einen Luftfederraum bilden. The present invention relates to an air spring for a motor vehicle with a cover for connecting the air spring to the structure of the motor vehicle, with a rolling piston and a connecting piston for connecting the air spring with a wheel of the motor vehicle, wherein the rolling piston and the connecting piston are connected to a rolling bellows and form an air spring space.
Aus der
Die
Bei Luftfedern mit variabler Federrate können Druckspitzen auftreten, die ein Bersten des Abrollbalges verursachen können. Bei kleinen Volumen, die für eine hohe Federrate notwendig sind, steigt der Druck im Luftfederraum je stärker die Luftfeder einfedert. Dabei kann es zur Überschreitung des maximal zulässigen Drucks im Luftfederraum kommen, was ein Bersten bzw. Platzen des Abrollbalgs zur Folge haben kann. Air springs with a variable spring rate can cause pressure spikes, which can cause a rupture of the unwinding bellows. For small volumes, which are necessary for a high spring rate, the pressure in the air spring chamber increases as the air spring rebounds. This can lead to exceeding the maximum allowable pressure in the air spring chamber, which can result in bursting or bursting of the rolling bellows.
Es ist daher Aufgabe der vorliegenden Erfindung, eine Luftfeder der eingangs genannten Gattung dahingehend zu verbessern, dass eine Beschädigung der Luftfeder bei dem Vorliegen von Druckspitzen wirksam verhindert wird. It is therefore an object of the present invention to improve an air spring of the type mentioned in that damage to the air spring in the presence of pressure peaks is effectively prevented.
Diese Aufgabe wird durch eine Luftfeder mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen des Erfindungsgegenstandes sind den Unteransprüchen entnehmbar. Dabei ist vorgesehen, dass im Anschlusskolben ein Zusatzraum ausgebildet ist, der zur Vermeidung von Druckspitzen im Luftfederraum freigebbar ist. This object is achieved by an air spring with the features of
Eine vorteilhafte Weiterbildung des Erfindungsgegenstandes sieht vor, dass der Zusatzraum von einer Platte begrenzt ist, wobei die Platte mittels einer Feder in Richtung des Luftfederraums vorgespannt ist und mittels eines Rollbalgs mit dem Anschlusskolben verbunden ist, so dass das Volumen des Zusatzraums veränderbar ist. An advantageous development of the subject invention provides that the additional space is limited by a plate, wherein the plate is biased by a spring in the direction of the air spring space and is connected by means of a rolling bellows with the connecting piston, so that the volume of the additional space is variable.
Bei einer alternativen Ausführungsform ist der Zusatzraum über mindestens ein Ventil mit dem Luftfederraum zur Vermeidung von Druckspitzen im Luftfederraum gesteuert verbindbar. Dabei kann vorgesehen sein, dass der Zusatzraum von einem Kolben begrenzt ist, der im Anschlusskolben gleitend gelagert ist und von einer Feder in Richtung des Luftfederraums vorgespannt ist, so dass das Volumen des Zusatzraums veränderbar ist. Der Kolben ist dabei von der Feder gegen einen Anschlag drückbar. In an alternative embodiment, the additional space can be connected via at least one valve to the air spring chamber in order to avoid pressure peaks in the air spring space. It can be provided that the additional space is limited by a piston which is slidably mounted in the connecting piston and is biased by a spring in the direction of the air spring space, so that the volume of the additional space is variable. The piston is pressed by the spring against a stop.
In einer weiteren alternativen Ausführungsform ist vorgesehen, dass der Zusatzraum von einer flexiblen Membran begrenzt wird, die oberhalb eines vorab bestimmten Druckwerts im Luftfederraum dehnbar ist, so dass das Volumen des Zusatzraums veränderbar ist und Druckspitzen im Luftfederraum vermieden werden. In a further alternative embodiment it is provided that the additional space is bounded by a flexible membrane which is stretchable above a predetermined pressure value in the air spring space, so that the volume of the additional space is variable and pressure peaks in the air spring space can be avoided.
Die vorliegende Erfindung wird anhand von vier Ausführungsbeispielen im Zusammenhang mit der beiliegenden Zeichnung näher erläutert. In der Zeichnung zeigen The present invention will be explained in more detail with reference to four embodiments in conjunction with the accompanying drawings. In the drawing show
In der
Problematisch für die Funktion einer derartigen Luftfeder
In
In der
Um das Überschreiten des zulässigen Drucks Pmax im Luftfederraum
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 102011115986 A1 [0002] DE 102011115986 A1 [0002]
- DE 4327585 A1 [0003] DE 4327585 A1 [0003]
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013107826.5A DE102013107826A1 (en) | 2013-07-23 | 2013-07-23 | Air spring for a motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013107826.5A DE102013107826A1 (en) | 2013-07-23 | 2013-07-23 | Air spring for a motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102013107826A1 true DE102013107826A1 (en) | 2015-01-29 |
Family
ID=52273887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102013107826.5A Withdrawn DE102013107826A1 (en) | 2013-07-23 | 2013-07-23 | Air spring for a motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102013107826A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016168500A1 (en) * | 2015-04-17 | 2016-10-20 | Firestone Industrial Products Company, Llc | End member assemblies as well as gas spring assemblies, suspension systems and methods |
| DE102016202642A1 (en) * | 2016-01-29 | 2017-08-03 | Continental Teves Ag & Co. Ohg | Air spring with bellows |
| US20180079274A1 (en) * | 2016-09-22 | 2018-03-22 | Beijingwest Industries Co., Ltd. | Air suspension assembly |
| EP3372864A1 (en) * | 2017-03-07 | 2018-09-12 | Continental Teves AG & Co. OHG | Air spring with a bellows-type connection |
| WO2020092167A1 (en) * | 2018-10-29 | 2020-05-07 | Continental Automotive Systems, Inc. | Pressure relief for air springs |
| DE102019106804B3 (en) | 2019-03-18 | 2020-07-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Mounting device for an air spring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4327585A1 (en) | 1993-08-17 | 1995-03-02 | Continental Ag | Pneumatic spring with an elastomeric rolling bellows that can be pressurised |
| US5413316A (en) * | 1993-12-13 | 1995-05-09 | Bridgestone/Firestone, Inc. | Adjustable rate air spring |
| DE102011115986A1 (en) | 2011-10-14 | 2013-04-18 | Audi Ag | Air spring for motor car, has fluid-tight limiting separating element whose limit pressure is greater than prevailing working pressure of air spring space at selected operating point of air spring |
-
2013
- 2013-07-23 DE DE102013107826.5A patent/DE102013107826A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4327585A1 (en) | 1993-08-17 | 1995-03-02 | Continental Ag | Pneumatic spring with an elastomeric rolling bellows that can be pressurised |
| US5413316A (en) * | 1993-12-13 | 1995-05-09 | Bridgestone/Firestone, Inc. | Adjustable rate air spring |
| DE102011115986A1 (en) | 2011-10-14 | 2013-04-18 | Audi Ag | Air spring for motor car, has fluid-tight limiting separating element whose limit pressure is greater than prevailing working pressure of air spring space at selected operating point of air spring |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016168500A1 (en) * | 2015-04-17 | 2016-10-20 | Firestone Industrial Products Company, Llc | End member assemblies as well as gas spring assemblies, suspension systems and methods |
| US10421328B2 (en) | 2015-04-17 | 2019-09-24 | Firestone Industrial Products Company, Llc | End member assemblies as well as gas spring assemblies, suspension systems and methods |
| DE102016202642A1 (en) * | 2016-01-29 | 2017-08-03 | Continental Teves Ag & Co. Ohg | Air spring with bellows |
| US10752071B2 (en) | 2016-01-29 | 2020-08-25 | Continental Teves Ag & Co. Ohg | Air spring having a pleated bellows |
| US20180079274A1 (en) * | 2016-09-22 | 2018-03-22 | Beijingwest Industries Co., Ltd. | Air suspension assembly |
| US10525785B2 (en) * | 2016-09-22 | 2020-01-07 | Beijingwest Industries Co., Ltd. | Air suspension assembly |
| EP3372864A1 (en) * | 2017-03-07 | 2018-09-12 | Continental Teves AG & Co. OHG | Air spring with a bellows-type connection |
| WO2020092167A1 (en) * | 2018-10-29 | 2020-05-07 | Continental Automotive Systems, Inc. | Pressure relief for air springs |
| US10900538B2 (en) | 2018-10-29 | 2021-01-26 | Continental Automotive Systems, Inc. | Pressure relief for air springs |
| DE102019106804B3 (en) | 2019-03-18 | 2020-07-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Mounting device for an air spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: F16F0009050000 Ipc: B60G0017040000 |
|
| R163 | Identified publications notified | ||
| R005 | Application deemed withdrawn due to failure to request examination |