WO2008009504A1 - Air spring comprising a two-part cover - Google Patents
Air spring comprising a two-part cover Download PDFInfo
- Publication number
- WO2008009504A1 WO2008009504A1 PCT/EP2007/055077 EP2007055077W WO2008009504A1 WO 2008009504 A1 WO2008009504 A1 WO 2008009504A1 EP 2007055077 W EP2007055077 W EP 2007055077W WO 2008009504 A1 WO2008009504 A1 WO 2008009504A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air spring
- air
- heat resistance
- material strength
- component
- 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.)
- Ceased
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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
- F16F9/05—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
- F16F9/02—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
Definitions
- the invention relates to an air spring or an air damper, in particular for trolleys of vehicles, wherein the air spring has at least one working space filled with compressed air, which is at least partially limited by a rolling bellows, wherein the rolling bellows rolls at least partially on rolling contours and with connecting or clamping elements its ends to connecting parts frictionally and / or positively secured.
- At least one connection part consists of at least two complementary components.
- DE 10 2004 031 875 A1 discloses a two-part cover for an air spring, namely an outer cover and an inner cover, wherein the rolling bellows is clamped between opposite clamping surfaces of outer cover and inner cover.
- one of the cover parts is designed so elastic that after assembly remains a biasing force for clamping / clamping of the rolling bellows.
- the inner lid is preferably made of plastic.
- clamps or clamping rings which are placed around the rolling bellows around and clamp the bellows wall on the surface of the respective connection part, ie the air spring cover or the rolling piston.
- the clamping rings or the Rollbalgenden may have special profile designs.
- suspension components such as air springs or air dampers are subject to this constraint, so that now bearing or heavily loaded parts are made by an altered construction of lighter materials, especially plastic.
- air spring cover which are also increasingly made of plastic or plastic composite materials. If, in the case of such plastic air spring covers, clamping rings of metal which are placed around the rolling bellows and clamp the bellows wall on the surface of the air spring cover, flow processes in the plastic can occur at high temperatures. In order to avoid such flow processes, reinforcements in the form of embedded in plastic steel rings are usually provided, but disadvantageously reduce the weight reduction again.
- the object was to provide an air spring lightweight design, the working space is securely sealed even at high temperatures, which is easy to manufacture and which can be easily adapted to the surrounding installation situation in the vehicle.
- connection part such as the air spring cover or the air spring piston
- connection part of two complementary components having different material strengths and / or heat resistance.
- the rolling bellows is frictionally and / or positively secured to the component with the higher material strength. This creep or material flow is reliably avoided and allows a permanent tightness in the clamping area between rolling bellows and connector, while the required "outer" shape of the connection part by the arbitrary design of the second component in any way can be adjusted.
- the compressed air filled working space hermetically seals, so in the case of an air spring cover a (small) part, namely the lid part of the working space forms. This eliminates further sealing elements between the two components of the connection part.
- the component with the lower material strength and / or heat resistance supports the component with the higher material strength and / or heat resistance dimensionally stable or dimensionally stable.
- the component with the higher material strength and / or heat resistance can be performed so thin-walled at least in some areas that the necessary strength against bursting pressure is achieved essentially by the dimensionally stable support by the component with the lower material strength and / or heat resistance.
- the air spring cover consists of a cup-shaped and connected to the rolling bellows via a clamping connection by clamping ring inner part higher material strength and / or heat resistance, wherein the inner part is also covered by a cup-shaped outer part lower material strength and / or heat resistance.
- the pot-shaped inner part of the air spring cover is then opened inwards, so that the rolling bellows can be easily attached with a clamping ring surrounding the "pot wall" and the rolling bellows supports this on appropriately shaped body parts.
- the outer part has a substantially parallel to the Rollbalgachse on the clamping region of the rolling bellows projecting edge or collar, which supports the rolling bellows at least partially to the outside. This ensures that the air spring transverse movements of the axis, ie The life of the bellows is thus increased by such a support.
- a further advantageous development is that the component with the higher material strength and / or heat resistance of steel and the component with the lower material strength and / or heat resistance of lightweight plastic material, such as the material PA 6,6 (polyamide 6,6 - Nylon), which also forms very well by machining and thus can be easily adapted to the body of the vehicle.
- PA 6,6 polyamide 6,6 - Nylon
- Fig. 1 shows an air spring 1 for a motor vehicle having a working space 2 filled with compressed air, which is at least partially bounded by the rolling bellows 3, which forms a rolled fold 3a.
- the rolling bellows 3 rolls during compression and rebound of the vehicle on the rotationally symmetrical contour 4 of the rolling piston 5 from.
- the air spring cover 10 consists of two complementary components, namely a cup-shaped and connected to the rolling bellows 3 via a clamping connection by clamping ring 8 inner part 11 made of steel, and also a cup-shaped outer part 12 of PA 6,6, which includes the inner part 11 dimensionally stable and accurate fit and supports the inner part of correspondingly shaped, but not shown here body parts.
- the rolling piston 5 is connected via corresponding connecting flanges with a likewise not shown here wheel carrier of the chassis.
- the damping chamber which is connected to the working space 2 via flow valves.
- the outer part 12 has a parallel to the Rollbalgachse projecting collar 13, which also covers the clamping region of the rolling bellows.
- the lower and outer conically shaped part of the collar 13 supports the rolling bellows outwards in the region of the upper rolled fold 14.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Beschreibung description
Luftfeder mit zweiteiligem DeckelAir spring with two-part cover
Die Erfindung betrifft eine Luftfeder oder einen Luftdämpfer, insbesondere für Fahrwerke von Fahrzeugen, wobei die Luftfeder mindestens einen mit Druckluft gefüllten Arbeitsraum aufweist, der mindestens teilweise durch einen Rollbalg begrenzt wird, wobei der Rollbalg mindestens teilweise auf Abrollkonturen abrollt und mit Verbindungs- oder Klemmelementen an seinen Enden an Anschlussteilen reib- und/oder formschlüssig befestigt ist. Mindestens ein Anschlussteil besteht dabei aus mindestens zwei komplementären Bauteilen.The invention relates to an air spring or an air damper, in particular for trolleys of vehicles, wherein the air spring has at least one working space filled with compressed air, which is at least partially limited by a rolling bellows, wherein the rolling bellows rolls at least partially on rolling contours and with connecting or clamping elements its ends to connecting parts frictionally and / or positively secured. At least one connection part consists of at least two complementary components.
Die DE 10 2004 031 875 Al offenbart einen zweiteiligen Deckel für eine Luftfeder, nämlich einen Außendeckel und einen Innendeckel, wobei der Rollbalg zwischen gegenüberliegenden Klemmfiächen von Außendeckel und Innendeckel verspannt ist. Dazu ist eines der Deckelteile so elastisch ausgeführt, dass nach der Montage eine Vorspannkraft zur Klemmung/Verspannung des Rollbalges bestehen bleibt. Der Innendeckel besteht dabei vorzugsweise aus Kunststoff. Mit dieser Konstruktion soll ein möglichst großer und flexibel anzupassender Arbeitsraum/Federraum bereitgestellt werden. Nachteilig bei dieser Konstruktion ist die vermutlich starke Temperaturabhängigkeit der Dichtigkeit in der Klemmung/Verspannung des Rollbalges.DE 10 2004 031 875 A1 discloses a two-part cover for an air spring, namely an outer cover and an inner cover, wherein the rolling bellows is clamped between opposite clamping surfaces of outer cover and inner cover. For this purpose, one of the cover parts is designed so elastic that after assembly remains a biasing force for clamping / clamping of the rolling bellows. The inner lid is preferably made of plastic. With this construction, the largest possible and flexibly adaptable working space / spring space should be provided. A disadvantage of this design is the presumably strong temperature dependence of the tightness in the clamping / tensioning of the rolling bellows.
Weitere Befestigungen für Rollbälge sind in einer Vielzahl von Varianten bekannt.Other fortifications for rolling bellows are known in a variety of variants.
Üblicherweise werden am Umfang des Rollbalges wirkende Klemmungen verwendet oder aber Spannringe, die um den Rollbalg herum gelegt werden und die Balgwand auf der Oberfläche des jeweiligen Anschlussteiles, d.h. am Luftfederdeckel oder am Abrollkolben festklemmen. Zur Verbesserung der Klemmwirkung können die Spannringe oder die Rollbalgenden besondere Profilgestaltungen aufweisen. In der Konstruktion von Kraftfahrzeugen nimmt die Einsparung von Gewicht einen immer größeren Raum ein. Dies führt dazu, dass jedes Bauelement diesbezüglich optimiert ist. Auch Fahrwerkskomponenten wie Luftfedern oder Luftdämpfer unterliegen diesem Zwang, so dass mittlerweile auch tragende oder stark belastete Teile durch eine veränderte Konstruktion aus leichteren Materialien, hier insbesondere aus Kunststoff hergestellt werden.Usually used on the circumference of the rolling bellows acting clamps or clamping rings, which are placed around the rolling bellows around and clamp the bellows wall on the surface of the respective connection part, ie the air spring cover or the rolling piston. To improve the clamping action, the clamping rings or the Rollbalgenden may have special profile designs. In the construction of motor vehicles, the saving of weight occupies an ever-increasing space. This results in each component being optimized in this respect. Also suspension components such as air springs or air dampers are subject to this constraint, so that now bearing or heavily loaded parts are made by an altered construction of lighter materials, especially plastic.
Dies gilt auch für Luftfederdeckel, die ebenfalls vermehrt aus Kunststoff oder Kunststoff- Verbundmaterialien hergestellt werden. Verwendet man bei solchen Kunststoff - Luftfederdeckeln Spannringe aus Metall, die um den Rollbalg herum gelegt werden und die Balgwand auf der Oberfläche des Luftfederdeckels festklemmen, so kann es bei hohen Temperaturen zu Fließprozessen im Kunststoff kommen. Um solche Fließprozesse zu vermeiden, sind üblicherweise Verstärkungen in Form von in Kunststoff eingebetteten Stahlringen vorgesehen, die jedoch nachteiligerweise die Gewichtsreduzierung wieder verringern.This also applies to air spring cover, which are also increasingly made of plastic or plastic composite materials. If, in the case of such plastic air spring covers, clamping rings of metal which are placed around the rolling bellows and clamp the bellows wall on the surface of the air spring cover, flow processes in the plastic can occur at high temperatures. In order to avoid such flow processes, reinforcements in the form of embedded in plastic steel rings are usually provided, but disadvantageously reduce the weight reduction again.
Für die Erfindung bestand also die Aufgabe, eine Luftfeder leichter Bauart bereitzustellen, deren Arbeitsraum auch bei hohen Temperaturen sicher abgedichtet wird, die dabei einfach herzustellen ist und die leicht an die umgebende Einbausituation im Fahrzeug angepasst werden kann.So for the invention, the object was to provide an air spring lightweight design, the working space is securely sealed even at high temperatures, which is easy to manufacture and which can be easily adapted to the surrounding installation situation in the vehicle.
Gelöst wird diese Aufgabe durch die Merkmale des Hauptanspruchs. Weitere vorteilhafte Ausbildungen sind in den Unteransprüchen offenbart.This object is achieved by the features of the main claim. Further advantageous embodiments are disclosed in the subclaims.
Dabei besteht ein Anschlussteil, etwa der Luftfederdeckel oder der Luftfederkolben, aus zwei komplementären Bauteilen, die unterschiedliche Materialfestigkeiten und/oder Warmfestigkeiten aufweisen. Der Rollbalg ist an dem Bauteil mit der höheren Materialfestigkeit reib- und/oder formschlüssig befestigt. Damit wird ein Kriechen oder ein Materialfließen sicher vermieden und eine dauerfeste Dichtigkeit im Klemmbereich zwischen Rollbalg und Anschlussteil ermöglicht, während die erforderliche „äußere" Form des Anschlussteiles durch die beliebige Ausbildung des zweiten Bauteiles auf jede Weise angepasst werden kann.In this case, there is a connection part, such as the air spring cover or the air spring piston, of two complementary components having different material strengths and / or heat resistance. The rolling bellows is frictionally and / or positively secured to the component with the higher material strength. This creep or material flow is reliably avoided and allows a permanent tightness in the clamping area between rolling bellows and connector, while the required "outer" shape of the connection part by the arbitrary design of the second component in any way can be adjusted.
Eine vorteilhafte Weiterbildung besteht darin, dass das Bauteil mit der höheren Materialfestigkeit und/oder Warmfestigkeit den mit Druckluft gefüllten Arbeitsraum luftdicht verschließt, also im Falle eines Luftfederdeckels einen (kleinen) Teil, nämlich den Deckelteil des Arbeitsraumes bildet. Damit entfallen weitere Dichtelemente zwischen den beiden Bauteilen des Anschlussteiles.An advantageous development is that the component with the higher material strength and / or heat resistance, the compressed air filled working space hermetically seals, so in the case of an air spring cover a (small) part, namely the lid part of the working space forms. This eliminates further sealing elements between the two components of the connection part.
Eine weitere vorteilhafte Weiterbildung besteht darin, dass das Bauteil mit der niedrigeren Materialfestigkeit und/oder Warmfestigkeit das Bauteil mit der höheren Materialfestigkeit und/oder Warmfestigkeit formfest bzw. formstabil abstützt. Damit kann das Bauteil mit der höheren Materialfestigkeit und/oder Warmfestigkeit mindestens in Teilbereichen so dünnwandig ausgeführt werden, dass die notwendige Festigkeit gegen Berstdruck im Wesentlichen durch die formstabile Abstützung durch das Bauteil mit der niedrigeren Materialfestigkeit und/oder Warmfestigkeit erreicht wird.A further advantageous development is that the component with the lower material strength and / or heat resistance supports the component with the higher material strength and / or heat resistance dimensionally stable or dimensionally stable. Thus, the component with the higher material strength and / or heat resistance can be performed so thin-walled at least in some areas that the necessary strength against bursting pressure is achieved essentially by the dimensionally stable support by the component with the lower material strength and / or heat resistance.
Eine weitere vorteilhafte Weiterbildung besteht darin, dass der Luftfederdeckel aus einem topfförmigen und mit dem Rollbalg über eine Klemmverbindung mittels Spannring verbundenen Innenteil höherer Materialfestigkeit und/oder Warmfestigkeit besteht, wobei das Innenteil von einem ebenfalls topfförmigen Außenteil niedrigerer Materialfestigkeit und/oder Warmfestigkeit umfasst ist. Das Topfförmige Innenteil des Luftfederdeckels ist dann nach innen geöffnet, so dass der Rollbalg leicht mit einem die „Topfwand" und den Rollbalg umgebenden Spannring befestigt werden kann. Der topfförmige Außenteil niedrigerer Materialfestigkeit und/oder Warmfestigkeit umfasst dann passgenau den mit dem Rollbalg verbundenen Innenteil und stütz diesen an entsprechend ausgeformten Karosserieteilen ab.A further advantageous development is that the air spring cover consists of a cup-shaped and connected to the rolling bellows via a clamping connection by clamping ring inner part higher material strength and / or heat resistance, wherein the inner part is also covered by a cup-shaped outer part lower material strength and / or heat resistance. The pot-shaped inner part of the air spring cover is then opened inwards, so that the rolling bellows can be easily attached with a clamping ring surrounding the "pot wall" and the rolling bellows supports this on appropriately shaped body parts.
Eine weitere vorteilhafte Weiterbildung besteht darin, dass das Außenteil einen im Wesentlichen parallel zur Rollbalgachse über den Klemmbereich des Rollbalges vorspringenden Rand oder Kragen aufweist, der den Rollbalg mindestens teilweise nach außen abstützt. Dadurch wird erreicht, dass die Luftfeder Querbewegungen der Achse, d.h. die so genannte „Kardanik", besser aufnehmen kann. Die Lebensdauer des Rollbalges wird damit durch eine solche Abstützung vergrößert.A further advantageous development is that the outer part has a substantially parallel to the Rollbalgachse on the clamping region of the rolling bellows projecting edge or collar, which supports the rolling bellows at least partially to the outside. This ensures that the air spring transverse movements of the axis, ie The life of the bellows is thus increased by such a support.
Eine weitere vorteilhafte Weiterbildung besteht darin, dass das Bauteil mit der höheren Materialfestigkeit und/oder Warmfestigkeit aus Stahl und das Bauteil mit der niedrigeren Materialfestigkeit und/oder Warmfestigkeit aus leichtem Kunststoffmaterial besteht, beispielsweise aus dem Werkstoff PA 6,6 (Polyamid 6,6 - Nylon), der sich auch besonders gut durch spanabhebende Bearbeitung formen und damit leicht an die Karosserie des Fahrzeuges anpassen lässt.A further advantageous development is that the component with the higher material strength and / or heat resistance of steel and the component with the lower material strength and / or heat resistance of lightweight plastic material, such as the material PA 6,6 (polyamide 6,6 - Nylon), which also forms very well by machining and thus can be easily adapted to the body of the vehicle.
Anhand eines Ausführungsbeispieles soll die Erfindung näher erläutert werden.Reference to an embodiment, the invention will be explained in more detail.
Die Fig. 1 zeigt eine Luftfeder 1 für ein Kraftfahrzeug, die einen mit Druckluft gefüllten Arbeitsraum 2 aufweist, der mindesten teilweise durch den Rollbalg 3 begrenzt wird, der eine Rollfalte 3a bildet. Der Rollbalg 3 rollt beim Ein- und Ausfedern des Fahrzeuges auf der rotationssymmetrischen Kontur 4 des Abrollkolbens 5 ab. An seinen Enden 6, 7 ist der Rollbalg mit Klemmringen 8, 9 an den Anschlussteilen befestigt, nämlich mit seinem oberen Ende am Luftfederdeckel 10 und mit seinem unteren Ende am Abrollkolben 5.Fig. 1 shows an air spring 1 for a motor vehicle having a working space 2 filled with compressed air, which is at least partially bounded by the rolling bellows 3, which forms a rolled fold 3a. The rolling bellows 3 rolls during compression and rebound of the vehicle on the rotationally symmetrical contour 4 of the rolling piston 5 from. At its ends 6, 7 of the rolling bellows with clamping rings 8, 9 attached to the connecting parts, namely with its upper end on the air spring cover 10 and with its lower end on the rolling piston. 5
Der Luftfederdeckel 10 besteht aus zwei komplementären Bauteilen, nämlich aus einem topfförmigen und mit dem Rollbalg 3 über eine Klemmverbindung mittels Klemmring 8 verbundenen Innenteil 11 aus Stahl, und einem ebenfalls topfförmigen Außenteil 12 aus PA 6,6, welches das Innenteil 11 formstabil und passgenau umfasst und das Innenteil an entsprechend ausgeformten, jedoch hier nicht näher dargestellten Karosserieteilen abstützt. Der Abrollkolben 5 ist über entsprechende Anschlussflansche mit einem hier ebenfalls nicht näher dargestellten Radträger des Fahrwerks verbunden.The air spring cover 10 consists of two complementary components, namely a cup-shaped and connected to the rolling bellows 3 via a clamping connection by clamping ring 8 inner part 11 made of steel, and also a cup-shaped outer part 12 of PA 6,6, which includes the inner part 11 dimensionally stable and accurate fit and supports the inner part of correspondingly shaped, but not shown here body parts. The rolling piston 5 is connected via corresponding connecting flanges with a likewise not shown here wheel carrier of the chassis.
Bei Luftdämpfern, d.h. bei Systemen, bei denen sowohl die Federung als auch die Dämpfung pneumatisch erfolgt, existiert ein zweiten Arbeitsraum, der Dämpfungsraum, , der mit dem Arbeitsraum 2 über Strömungsventile verbunden ist. Das Außenteil 12 weist einen parallel zur Rollbalgachse vorspringenden Kragen 13 auf, der auch den Klemmbereich des Rollbalges überdeckt. Der untere und außen konisch geformte Teil des Kragens 13 stützt den Rollbalg nach außen im Bereich der oberen Rollfalte 14 ab.In air dampers, ie systems in which both the suspension and the damping is pneumatic, there is a second working space, the damping chamber, which is connected to the working space 2 via flow valves. The outer part 12 has a parallel to the Rollbalgachse projecting collar 13, which also covers the clamping region of the rolling bellows. The lower and outer conically shaped part of the collar 13 supports the rolling bellows outwards in the region of the upper rolled fold 14.
Durch eine solche Abstützung können auch senkrecht zur Achse des Rollbalges wirkende Kräfte/Fahrwerkskräfte aufgenommen werden können, die dann zu geringen Schwenkungen oder Auslenkungen des Balges führen können. Die Lebensdauer des Rollbalges wird durch eine solche Abstützung vergrößert. By such a support acting forces perpendicular to the axis of the rolling bellows / suspension forces can be absorbed, which can then lead to small swivels or deflections of the bellows. The life of the bellows is increased by such a support.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
(Teil der Beschreibung)(Part of the description)
1 Luftfeder1 air spring
2 Arbeitsraum2 working space
3 Rollbalg3 rolling bellows
3a Rollfalte3a rolled fold
4 Rotationssymmetrische Kontur4 rotationally symmetric contour
5 Abrollkolben5 rolling piston
6 Oberes Rollbalgende6 Upper Rollbalgende
7 Unteres Rollbalgende7 Lower Rollbalgende
8 Oberer Klemmring8 Upper clamping ring
9 Unterer Klemmring9 Lower clamping ring
10 Luftfederdeckel10 air spring cover
11 Innenteil des Luftfederdeckels11 Inner part of the air spring cover
12 Außenteil des Luftfederdeckels12 Outer part of the air spring cover
13 Kragen13 collar
14 Obere Rollfalte 14 upper rolled fold
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006033198.2 | 2006-07-18 | ||
| DE200610033198 DE102006033198A1 (en) | 2006-07-18 | 2006-07-18 | Air spring with two-part cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008009504A1 true WO2008009504A1 (en) | 2008-01-24 |
Family
ID=38330700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/055077 Ceased WO2008009504A1 (en) | 2006-07-18 | 2007-05-25 | Air spring comprising a two-part cover |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102006033198A1 (en) |
| WO (1) | WO2008009504A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011142047A1 (en) * | 2010-05-10 | 2011-11-17 | 住友金属工業株式会社 | Steel wall and method for constructing steel wall |
| DE102012200388A1 (en) * | 2011-10-06 | 2013-04-11 | Continental Teves Ag & Co. Ohg | Air spring cover with switchable air volume |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004061989A1 (en) * | 2004-12-23 | 2006-07-06 | Continental Aktiengesellschaft | Pneumatic spring for e.g. passenger car, has cover manufactured as single-piece die cast component from plastic material and provided with reinforcement sleeve in area of clamping shaft, where sleeve is made from metal e.g. ferrous metal |
-
2006
- 2006-07-18 DE DE200610033198 patent/DE102006033198A1/en not_active Ceased
-
2007
- 2007-05-25 WO PCT/EP2007/055077 patent/WO2008009504A1/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004061989A1 (en) * | 2004-12-23 | 2006-07-06 | Continental Aktiengesellschaft | Pneumatic spring for e.g. passenger car, has cover manufactured as single-piece die cast component from plastic material and provided with reinforcement sleeve in area of clamping shaft, where sleeve is made from metal e.g. ferrous metal |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006033198A1 (en) | 2008-01-24 |
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