WO2008031784A1 - Tubular roll bellows for commercial vehicle applications with components made from plastic - Google Patents
Tubular roll bellows for commercial vehicle applications with components made from plasticInfo
- Publication number
- WO2008031784A1 WO2008031784A1 PCT/EP2007/059449 EP2007059449W WO2008031784A1 WO 2008031784 A1 WO2008031784 A1 WO 2008031784A1 EP 2007059449 W EP2007059449 W EP 2007059449W WO 2008031784 A1 WO2008031784 A1 WO 2008031784A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lid
- bellows
- rolling
- roll bellows
- plastic
- Prior art date
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 11
- 229920003023 plastic Polymers 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 40
- 239000007787 solid Substances 0.000 claims description 2
- 239000011324 bead Substances 0.000 description 5
- 239000000872 buffer Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
- F16F9/0454—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 characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane
- F16F9/0463—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 characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane with separate crimping rings
Definitions
- the invention relates to an air spring for commercial vehicles with a rolling bellows, a rolling piston and a lid, wherein the rolling bellows is hermetically sealed by the rolling piston and the lid.
- the air spring often serves as a length limit, in which it is used as a pull stop.
- the air spring must be able to transmit tensile forces.
- the cover of the air springs are usually designed as metallic flanging, wherein such a flanging plate engages around a corresponding bead of the rolling bellows around and is so firmly and permanently connected to the rolling bellows.
- connection between rolling bellows and rolling piston is usually made via screw-on clamping plate, which fix the rolling bellows on the rolling piston.
- the connection between rolling bellows and rolling piston used in other areas of commercial vehicle suspension and rolling bellows and cover over the cone seats is not usable here, as this compound can not transmit sufficient tensile forces.
- Plastics can not be used here.
- metallic materials are susceptible to corrosion and must therefore be additionally provided with a corrosion protection, which also withstands the crimping itself without damage. These coatings are often harmful to the environment and expensive.
- metallic flanging are relatively heavy.
- the invention has for its object to provide an air spring of the type described, which has add-on parts such as rolling piston and / or plastic cover and can be used as a train stop especially when used in commercial vehicle trailers.
- the rolling bellows is formed tubular at least at its end associated with the lid, - at least the lid is formed of a plastic, the lid protrudes at least partially into the lid associated with the end of the rolling bellows and the rolling bellows by means of a clamping ring so can be clamped on the outer surface of the protruding into the end of the bellows lid that between the bellows and cover an airtight, solid, axial tensile forces between the cover and beam transmitting connection exists.
- the protruding into the end of the rolling bellows outer shell of the lid has a clamping contour formed as a contraction.
- the tubular design of the bellows has the advantage that a bead does not have to be formed and the bellows is therefore inexpensive to produce. Since the lid is made of plastic, an additional corrosion protection can be omitted. Plastic also leads to an advantageous weight saving.
- the clamping of the rolling bellows on the cover leads to a firm frictional connection, which can also transmit tensile forces.
- the formation of a clamping contour at the disgusting leads in addition to the frictional engagement also to a form-fitting support of the tensile force transmission capability of the clamping connection.
- the invention will be explained in more detail with reference to a drawing.
- the figure shows a longitudinal section through an inventive air spring with a rolling piston 1 made of plastic, a rolling bellows 2 made of rubber or gummiartigem material and a lid 3.
- a stop buffer 4 is arranged, which is locked to a mounting knob 5.
- At the rolling piston 1 of the rolling bellows 2 is fixed by means of a clamping plate 6 and a clamping screw 7.
- the lid 3 has at its radial outer casing 8 a groove-shaped, circumferential bead 9.
- the rolling bellows 2 engages around the outer jacket 8 on the entire axial thickness of the lid 3 and is firmly clamped on the lid 3 with a clamping ring 10 in the groove 9 of the lid 3.
- frictional engagement of the rolling bellows 2 is secured against axial displacements against the cover 3, wherein the axial displacement is additionally hindered by the shape of the bead 8.
- the air spring shown can also transmit axial tensile forces.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to an air spring for commercial vehicles, comprising a roll bellows (2), a rolling piston (1) and a lid (3). According to the invention, the air spring, comprising components such as rolling piston (1) and/or lid (3) made from plastic shall be used as towing stop in particular for applications with commercial vehicle trailers. The roll bellows (2) is designed in a tubular shape, at least at the end thereof facing the lid (3), at least the lid (3) being made from a plastic, the lid (3) at least partly extends into the end of the roll bellows (2) facing the lid (3) and the roll bellows (2) can be clamped to the outer surface (8) of the lid (3) extending into the end of the roll bellows (2) by means of a clamping ring (10), such that an airtight, rigid connection is generated between the roll bellows (2) and lid (3) which transmits axial towing forces between the lid (3) and the roll bellows (2).
Description
Beschreibung description
Schlauchrollbalg für Nutzfahrzeuganwendung mit Anbauteilen aus KunststoffHose bladder for commercial vehicle application with attachments made of plastic
Die Erfindung betrifft eine Luftfeder für Nutzfahrzeuge mit einem Rollbalg, einem Abrollkolben und einem Deckel, wobei der Rollbalg durch den Abrollkolben und den Deckel luftdicht verschlossen ist.The invention relates to an air spring for commercial vehicles with a rolling bellows, a rolling piston and a lid, wherein the rolling bellows is hermetically sealed by the rolling piston and the lid.
Derartige Luftfedern sind an sich bekannt und in großer Vielfalt in Nutzfahrzeugen, und zwar sowohl den Zugfahrzeugen als auch in Anhängern im Einsatz.Such air springs are known per se and in great variety in commercial vehicles, both the towing vehicles and in trailers in use.
Vor allem beim Einsatz in Anhängern dient die Luftfeder häufig auch als Längenbegrenzung, in dem sie wie ein Zuganschlag genutzt wird. Dabei muss die Luftfeder auch Zugkräfte übertragen können.Especially when used in trailers, the air spring often serves as a length limit, in which it is used as a pull stop. The air spring must be able to transmit tensile forces.
Um dies zu erreichen, sind die Deckel der Luftfedern meist als metallische Bördelplatten ausgeführt, wobei eine derartige Bördelplatte um einen korrespondierenden Wulst des Rollbalges herum greift und so fest und unlösbar mit dem Rollbalg verbunden ist.To achieve this, the cover of the air springs are usually designed as metallic flanging, wherein such a flanging plate engages around a corresponding bead of the rolling bellows around and is so firmly and permanently connected to the rolling bellows.
Die Anbindung zwischen Rollbalg und Abrollkolben wird meist über verschraubbare Spannteller hergestellt, die den Rollbalg auf dem Abrollkolben fixieren. Die in anderen Bereichen der Nutzfahrzeugfederung eingesetzte Verbindung zwischen Rollbalg und Abrollkolben sowie Rollbalg und Deckel über der Konussitze ist hier nicht nutzbar, da diese Verbindung keine ausreichenden Zugkräfte übertragen kann. Für die Bördelplatte sind nur Werkstoffe einsetzbar, die bei genügender Festigkeit plastisch verformbar sind. Hier findet so gut wie ausschließlich Metall Anwendung. Kunststoffe sind hier nicht einsetzbar.
Metallische Werkstoffe sind jedoch korrosionsanfällig und müssen deshalb zusätzlich mit einem Korrosionsschutz versehen sein, der auch den Bördelvorgang selbst unbeschadet aushält. Diese Beschichtungen sind häufig umweltschädlich und teuer. Außerdem sind metallische Bördelplatten relativ schwer.The connection between rolling bellows and rolling piston is usually made via screw-on clamping plate, which fix the rolling bellows on the rolling piston. The connection between rolling bellows and rolling piston used in other areas of commercial vehicle suspension and rolling bellows and cover over the cone seats is not usable here, as this compound can not transmit sufficient tensile forces. For the crimping only materials are used, which are plastically deformable with sufficient strength. Here is almost exclusively metal application. Plastics can not be used here. However, metallic materials are susceptible to corrosion and must therefore be additionally provided with a corrosion protection, which also withstands the crimping itself without damage. These coatings are often harmful to the environment and expensive. In addition, metallic flanging are relatively heavy.
Der Erfindung liegt die Aufgabe zugrunde, eine Luftfeder der eingangs geschilderten Art zu schaffen, die Anbauteile wie Abrollkolben und/oder Deckel aus Kunststoff aufweist und als Zuganschlag insbesondere beim Einsatz in Nutzfahrzeuganhängern einsetzbar ist.The invention has for its object to provide an air spring of the type described, which has add-on parts such as rolling piston and / or plastic cover and can be used as a train stop especially when used in commercial vehicle trailers.
Diese Aufgabe wird dadurch gelöst, dass der Rollbalg mindestens an seinem dem Deckel zugeordneten Ende schlauchförmig ausgebildet ist, - mindestens der Deckel aus einem Kunststoff ausgebildet ist, der Deckel mindestens teilweise in das dem Deckel zugeordnete Ende des Rollbalges hineinragt und der Rollbalg mittels eines Spannringes so auf dem Außenmantel des in das Ende des Rollbalges hineinragenden Deckels festklemmbar ist, dass zwischen Rollbalg und Deckel eine luftdichte, feste, axiale Zugkräfte zwischen Deckel und Balken übertragende Verbindung besteht.This object is achieved in that the rolling bellows is formed tubular at least at its end associated with the lid, - at least the lid is formed of a plastic, the lid protrudes at least partially into the lid associated with the end of the rolling bellows and the rolling bellows by means of a clamping ring so can be clamped on the outer surface of the protruding into the end of the bellows lid that between the bellows and cover an airtight, solid, axial tensile forces between the cover and beam transmitting connection exists.
In einer weiteren Ausbildung der Erfindung weist der in das Ende des Rollbalges hineinragende Außenmantel des Deckels eine als Einschnürung ausgebildete Klemmkontur auf.In a further embodiment of the invention, the protruding into the end of the rolling bellows outer shell of the lid has a clamping contour formed as a contraction.
Die schlauchförmige Ausbildung des Rollbalges hat den Vorteil, dass ein Wulst nicht an- geformt werden muss und der Rollbalg daher kostengünstig herstellbar ist. Da der Deckel aus Kunststoff ausgebildet ist, kann ein zusätzlicher Korrosionsschutz entfallen. Kunststoff führt außerdem zu einer vorteilhaften Gewichtseinsparung.The tubular design of the bellows has the advantage that a bead does not have to be formed and the bellows is therefore inexpensive to produce. Since the lid is made of plastic, an additional corrosion protection can be omitted. Plastic also leads to an advantageous weight saving.
Die Klemmung des Rollbalges auf dem Deckel führt zu einer festen reibschlüssigen Ver- bindung, die auch Zugkräfte übertragen kann. Die Ausbildung einer Klemmkontur am De-
ekel führt neben dem Reibschluss auch zu einer formschlüssigen Unterstützung der Zugkraftübertragungsfähigkeit der Klemmverbindung.The clamping of the rolling bellows on the cover leads to a firm frictional connection, which can also transmit tensile forces. The formation of a clamping contour at the disgusting leads in addition to the frictional engagement also to a form-fitting support of the tensile force transmission capability of the clamping connection.
Nachstehend wird die Erfindung anhand einer Zeichnung näher erläutert. Die Figur zeigt einen Längsschnitt durch eine erfindungsgemäße Luftfeder mit einem Abrollkolben 1 aus Kunststoff, einem Rollbalg 2 aus Gummi oder gummiartigem Material und einen Deckel 3. Auf der Innenseite des Deckels 3 ist ein Anschlagpuffer 4 angeordnet, der an einem Befestigungsknopf 5 eingerastet ist. Am Abrollkolben 1 ist der Rollbalg 2 mittels eines Spanntellers 6 und einer Spannschraube 7 befestigt.The invention will be explained in more detail with reference to a drawing. The figure shows a longitudinal section through an inventive air spring with a rolling piston 1 made of plastic, a rolling bellows 2 made of rubber or gummiartigem material and a lid 3. On the inside of the lid 3, a stop buffer 4 is arranged, which is locked to a mounting knob 5. At the rolling piston 1 of the rolling bellows 2 is fixed by means of a clamping plate 6 and a clamping screw 7.
Der Deckel 3 weist an seinem radialen Außenmantel 8 eine nutförmige, umlaufende Sicke 9 auf. Der Rollbalg 2 greift auf der gesamten axialen Dicke des Deckels 3 um den Außenmantel 8 herum und ist mit einem Spannring 10 in der Nut 9 des Deckels 3 fest auf dem Deckel 3 festgeklemmt. Durch den zwischen dem Deckel 3 und dem Rollbalg 2 aufgrund der Klemmung durch den Spannring 10 herrschenden Reibschlusses ist der Rollbalg 2 gegen axiale Verschiebungen gegen den Deckel 3 gesichert, wobei die axiale Verschiebung durch die Form der Sicke 8 zusätzlich behindert ist. Dadurch kann die gezeigte Luftfeder auch axiale Zugkräfte übertragen.
The lid 3 has at its radial outer casing 8 a groove-shaped, circumferential bead 9. The rolling bellows 2 engages around the outer jacket 8 on the entire axial thickness of the lid 3 and is firmly clamped on the lid 3 with a clamping ring 10 in the groove 9 of the lid 3. By prevailing between the lid 3 and the rolling bellows 2 due to the clamping by the clamping ring 10 frictional engagement of the rolling bellows 2 is secured against axial displacements against the cover 3, wherein the axial displacement is additionally hindered by the shape of the bead 8. As a result, the air spring shown can also transmit axial tensile forces.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
(zur Beschreibung)(as description)
1 Abrollkolben1 rolling piston
2 Rollbalg2 rolling bellows
3 Deckel3 lids
4 Anschlagpuffer4 stop buffers
5 Befestigungsknopf für den Puffer 45 fixing button for the buffer 4
6 Spannteller6 clamping plates
7 Spannschraube7 clamping screw
8 Außenmantel des Deckels 38 outer jacket of the lid 3
9 Sicke am Außenmantel 89 bead on the outer jacket 8
10 Spannring
10 clamping ring
Claims
1. Luftfeder für Nutzfahrzeuge mit einem Rollbalg (2), einem Abrollkolben (1) und einem Deckel (3), wobei der Rollbalg (2) durch den Abrollkolben (1) und den Deckel (3) luftdicht verschlossen ist, dadurch gekennzeichnet, dass1. Air spring for commercial vehicles with a rolling bellows (2), a rolling piston (1) and a lid (3), wherein the rolling bellows (2) by the rolling piston (1) and the lid (3) is hermetically sealed, characterized in that
- der Rollbalg (2) mindestens an seinem dem Deckel (3) zugeordneten Ende schlauchförmig ausgebildet ist,- The rolling bellows (2) is formed tubular at least at its lid (3) associated end,
- mindestens der Deckel (3) aus einem Kunststoff ausgebildet ist,- At least the lid (3) is formed of a plastic,
- der Deckel (3) mindestens teilweise in das dem Deckel (3) zugeordnete Ende des Rollbalges (2) hineinragt und- The lid (3) at least partially into the lid (3) associated with the end of the rolling bellows (2) protrudes and
- der Rollbalg (2) mittels eines Spannringes (10) so auf dem Außenmantel (8) des in das Ende des Rollbalges (2) hineinragenden Deckels (3) festklemmbar ist, dass zwischen Rollbalg (2) und Deckel (3) eine luftdichte, feste, axiale Zugkräfte zwischen Deckel (3) und Rollbalg (2) übertragende Verbindung besteht.- The rolling bellows (2) by means of a clamping ring (10) on the outer jacket (8) in the end of the rolling bellows (2) protruding lid (3) can be clamped that between the bellows (2) and cover (3) an airtight, solid, axial tensile forces between the cover (3) and rolling bellows (2) transmitting connection exists.
2. Luftfeder nach Anspruch 1, dadurch gekennzeichnet, dass der in das Ende des Rollbalges (2) hineinragende Außenmantel (8) des Deckels (3) eine als Einschnürung ausgebildete Klemmkontur (9) aufweist. 2. Air spring according to claim 1, characterized in that in the end of the rolling bellows (2) projecting outer jacket (8) of the lid (3) designed as a constriction clamping contour (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07803366A EP2066915A1 (en) | 2006-09-14 | 2007-09-10 | Tubular roll bellows for commercial vehicle applications with components made from plastic |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006043958.9 | 2006-09-14 | ||
| DE102006043958 | 2006-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008031784A1 true WO2008031784A1 (en) | 2008-03-20 |
Family
ID=38657452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/059449 WO2008031784A1 (en) | 2006-09-14 | 2007-09-10 | Tubular roll bellows for commercial vehicle applications with components made from plastic |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2066915A1 (en) |
| WO (1) | WO2008031784A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0351678A2 (en) * | 1988-07-20 | 1990-01-24 | Otto Sauer Achsenfabrik Keilberg | Piston arrangement |
| EP1321694A2 (en) * | 2001-12-22 | 2003-06-25 | ContiTech Luftfedersysteme GmbH | Tubular rolling lobe spring |
| EP1391630A1 (en) * | 2002-08-23 | 2004-02-25 | Audi Ag | Air spring with rolling lobe attached to a tube shaped rolling piston |
| DE102004030335A1 (en) * | 2004-06-23 | 2006-01-19 | Contitech Luftfedersysteme Gmbh | Air spring with a rolling piston and a rolling bellows with at least one vulcanized fastening part |
-
2007
- 2007-09-10 WO PCT/EP2007/059449 patent/WO2008031784A1/en active Application Filing
- 2007-09-10 EP EP07803366A patent/EP2066915A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0351678A2 (en) * | 1988-07-20 | 1990-01-24 | Otto Sauer Achsenfabrik Keilberg | Piston arrangement |
| EP1321694A2 (en) * | 2001-12-22 | 2003-06-25 | ContiTech Luftfedersysteme GmbH | Tubular rolling lobe spring |
| EP1391630A1 (en) * | 2002-08-23 | 2004-02-25 | Audi Ag | Air spring with rolling lobe attached to a tube shaped rolling piston |
| DE102004030335A1 (en) * | 2004-06-23 | 2006-01-19 | Contitech Luftfedersysteme Gmbh | Air spring with a rolling piston and a rolling bellows with at least one vulcanized fastening part |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2066915A1 (en) | 2009-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2042771B1 (en) | Vibration absorber with a buffer | |
| EP2704912B1 (en) | Rolling piston for an air spring rolling bellows | |
| DE102017211139A1 (en) | Air strut with anti-twist rolling piston | |
| EP1891351A1 (en) | Plunger piston made from plastic for an air spring | |
| DE102013212982A1 (en) | Air suspension device mounted in vehicles e.g. road or rail vehicles, has air spring cover that is air-tightly fixed on air spring bellows as hybrid cap, respectively at upper portion and lower portion of vehicle chassis | |
| EP2605923B1 (en) | Air strut with elastic piston mounting | |
| DE102018216993A1 (en) | Air spring with thermoset connector | |
| EP1031756A2 (en) | Fastening of the rolling diaphragm of an air spring on a supporting member | |
| EP2859250B1 (en) | Rolling piston for an air spring rolling bellows | |
| DE10163818B4 (en) | Hose roll bellows spring | |
| DE102016216911A1 (en) | Air suspension unit with large-volume air spring cover | |
| DE102005047955B3 (en) | Device for sealing between steering gear housing and front wall sheet of vehicle body, has shape stiffening base body for attaching to steering gear housing and sealing shell, whose free end is provided for engaging into front wall sheet | |
| EP1586789A1 (en) | Elastic support for a driver's cab | |
| DE2053826A1 (en) | Bellows attachment of a spring strut | |
| EP3621858B1 (en) | Actuation device for vehicle brake system | |
| DE102012220204A1 (en) | Pneumatic spring module for vehicle i.e. motor car, has revolution piston arranged on surface of cylinder tube, shock absorber arranged on airtight rolling bellows, and piston rod fixed with revolution piston | |
| EP1331418B1 (en) | Piston-cylinder unit and method for manufacturing the same | |
| WO2008031784A1 (en) | Tubular roll bellows for commercial vehicle applications with components made from plastic | |
| EP2196716B1 (en) | Hose coupling | |
| EP1802891B1 (en) | Air spring | |
| DE102015222348B4 (en) | Assembly, in particular for a motor vehicle, with a bellows | |
| EP1736683A2 (en) | Tubular air bellow pneumatic springs | |
| DE102010008926A1 (en) | Connecting device for a fluid line | |
| EP1715221B1 (en) | Fixing of the end part of a bellow to a connecting part | |
| EP1977115A1 (en) | Piston /cylinder unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07803366 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2007803366 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |