WO2005024265A1 - Method for fixing a pneumatic spring rolled bellows to a mounting - Google Patents

Method for fixing a pneumatic spring rolled bellows to a mounting Download PDF

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Publication number
WO2005024265A1
WO2005024265A1 PCT/EP2004/051240 EP2004051240W WO2005024265A1 WO 2005024265 A1 WO2005024265 A1 WO 2005024265A1 EP 2004051240 W EP2004051240 W EP 2004051240W WO 2005024265 A1 WO2005024265 A1 WO 2005024265A1
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WIPO (PCT)
Prior art keywords
bellows
clamping ring
fitting
valve
clamping
Prior art date
Application number
PCT/EP2004/051240
Other languages
German (de)
French (fr)
Inventor
Hans-Peter Krauss
Original Assignee
Continental Aktiengesellschaft
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Publication date
Application filed by Continental Aktiengesellschaft filed Critical Continental Aktiengesellschaft
Publication of WO2005024265A1 publication Critical patent/WO2005024265A1/en

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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
    • 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 the attachment of an air spring bellows to a fitting (cover and / or rolling piston), the attachment being carried out with the aid of a clamping ring, according to the preamble of claim 1.
  • auxiliary application 70 18 029 a fastening for rubber bellows, hoses or the like is described on shock absorbers and / or pneumatic or hydropneumatic suspensions.
  • 3 shows a type of attachment of a hose in a piece of pipe.
  • the pipe section is cylindrical and smooth. Since the piece of hose clamped with an internal fastening ring runs in a straight line, the required pull-out strength for air springs does not appear to be given.
  • Fig. 1 of the same utility model shows in its lower part a hose end attached to a cylinder by means of a clamping ring.
  • the cylinder In the fastening area, the cylinder is not simply smooth, but has a bead. The production of the bead requires additional manufacturing effort. Since the piece of tubing runs in a straight line, anyone who does not seem to be able to pull out seems to be there.
  • DE 195 28 854 AI deals with the attachment of one end of an air spring bellows to a valve.
  • Fig. 2 shows a more or less cylindrical-smooth fitting. The bellows attached to it by means of an internal clamp undergoes a U-shaped (180 °) deflection in the fastening area.
  • FIGS. 1 a, 1 b and 1 c of the same document show a two-part fitting consisting of a cover and a support tube, a bellows end being clamped between the two fastening parts by means of a flange.
  • This type of fastening requires a two-part fitting.
  • FIG. 4 shows in its lower area the fastening of the tubular oil bellows to a rolling piston.
  • the bellows is U-shaped in its fastening area, i. H. deflected by 180 ° and additionally clamped with a second clamping ring.
  • contoured fittings body with a “shoulder”
  • the shoulder being intended to prevent axial displacement.
  • Such contoured fittings require a special structural design of the air spring.
  • manufacture of fittings that have a shoulder associated with an additional effort.
  • a tear-resistant and pressure-tight attachment of a claw roller bellows to an air spring fitting is to be described, which is also simple and inexpensive.
  • the core of the roll bellows fastening which is essential to the invention, can be seen in a 360 ° deflection.
  • the bellows is guided from the inside to the outside over the clamping ring and thus prevents the composite from moving axially.
  • the fundamental advantage of this 360 ° deflection of the roll bellows end to be fastened is that the bellows has a particularly good pull-out strength when tensile forces are applied in its longitudinal direction. Since a pulling process results from the application of tensile forces, the bellows is lashed even tighter.
  • an (expensive) shoulder can be dispensed with.
  • the risk of the bellows tearing out when using tensile forces can be further reduced if the bellows end is not flush with the end of the valve but rather protrudes slightly beyond the end of the valve, so that the bellows end is turned around the end of the valve when the air spring is installed.
  • the respective contact area of the bellows / clamping ring can be fixed with the help of an adhesive or by vulcanization.
  • Figure 1 shows the longitudinal section through an air spring, sections in the fastening area hose bellows / fitting.
  • a bellows air spring essentially consists of a bellows 2, which is delimited in a pressure-tight and tensile manner by two end members 4, 6 (cover 4 and rolling piston 6) arranged spaced apart from one another.
  • the invention is concerned exclusively with the fastening of the bellows end to the respective air spring end member (fitting) with the aid of at least one internal tension ring.
  • Fig. 1 In Fig. 1, "4" or “6” denotes the end of an air spring fitting (cover 4 or rolling piston 6). "2” means a hose bellows and “8" an internal clamping ring.
  • the arrow F 7 indicates the direction of force of the pressurized air spring (air spring longitudinal axis 10).
  • the claw rolling bellows 2 ends flush with the fitting 4 or 6, the rolling bellows end between the inside of the fitting 4 or 6 and the inner clamping ring 8 is jammed.
  • the bellows 2 is guided around the Spanming 8 and is then directed over the edge of the valve 4 or 6 on the outside thereof. In this way, there is an overall 360 ° deflection of the end of the bellows.
  • the armature 4 or 6 is preferably the rolling piston 6 of the air spring, a rolling fold 2a usually resulting in the end region of the bellows 2. Also in the event that the valve 4 or 6 shown is to be an air spring cover, there is also an at least small rolling fold 2a, so that the 360 ° deflection of the end of the bellows, which is essential to the invention, is also reactivated here.
  • the end of the bellows is first inserted between the end of the fitting 4 or 6 and the clamping ring 8. Then there is a so-called “active" clamping from the outside.
  • the valve 4 or 6 is pressed together in the radial direction until the desired clamping effect is achieved.
  • the bellows 2 is then first placed 180 ° around the Spanming 8 (see illustration ) and then further directed outwards over the edge of the fitting 4 or 6 until the 360 ° deflection according to FIG. 1 is reached.
  • the sclilauchrohgg endc is first inserted between a (first) clamping ring 8 and the inner edge of the fitting 4 or 6.
  • the rolling bellows 2 is U-shaped, ie around 180 ° around the clamping ring 8.
  • a second span ring 12 is attached, which is clamped with an axially displaceable third clamping ring 14 in such a way that both a clamping effect on the between valve 4 or 6 and the first clamping ring 8, the rolling bellows end as well as a clamping effect is exerted on the rolling bellows section located between the first 8 and second clamping ring 12. This results in a double clamping of the rolling bellows end.
  • the last shot also consists of a further 180 ° deflection of the roller bellows 2, so that a 360 ° deflection according to FIG. 1 is also achieved overall.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Diaphragms And Bellows (AREA)
  • Sealing Devices (AREA)

Abstract

The aim of the invention is to apply a tubular rolled bellows (2) to a mounting (4 and 6) in a tear-resistant, pressure-tight, simple and cost-effective manner, with a 360 DEG deviation of the end of the rolled bellows about a clamping ring (8). Said clamping ring (8) is arranged on the inner edge of the mounting (4 and 6), the end of the rolled bellows (2), located between the mounting (4 and 6) and the clamping ring (8), having the same direction as the edge of the mounting (4 and 6). The 360 DEG deviation of the end of the rolled bellows is achieved by the rolled bellows (2) being folded over the inner side of the clamping ring (8) and then guided over the narrow edge of the clamping ring (8) and the edge of the mounting (4 and 6) to the outer side thereof. The end of the bellows must not necessarily be flush with the end of the mounting, but can still easily protrude past the end of the mounting (4 and 6), in such a way that the end of the bellows (25) is folded around the end of the mounting (4 and 6) when the pneumatic spring is mounted. The end of the bellows can be fixed by means of active or passive clamping.

Description

Befestigung eines Luftfeder-Rollbalgs an einer ArmaturAttachment of an air spring bellows to a valve
Die Erfindung betrifft die Befestigung eines Luftfeder-Rollbalgs an einer Armatur (Deckel und/oder Abrollkolben), wobei die Befestigung mit Hilfe eines Spannringes erfolgt, - gemäß dem Oberbegriff des Anspruchs 1.The invention relates to the attachment of an air spring bellows to a fitting (cover and / or rolling piston), the attachment being carried out with the aid of a clamping ring, according to the preamble of claim 1.
Stand der TechnikState of the art
Es ist übhch, einen Luftfederbalg mit einem Spanming auf einer Armatur (Kolben, Deckel, Rom- o.a.) zu befestigen.It is common to attach an air bellows with a Spanming on a valve (piston, cover, Rome or the like).
Wird der Balg über eine Armatur, die keine „Schulter" aufweist, geklemmt, so besteht die Gefahr, dass die auf dem Balg lastenden Zugkräfte diesen zusammen mit den Spannring axial verschieben.If the bellows is clamped over a fitting that does not have a “shoulder”, there is a risk that the tensile forces acting on the bellows will move it axially together with the clamping ring.
In der Gebrauchsmusterhilfsanmeldung 70 18 029 wird eine Befestigung für Gummibälge, Schläuche oder dgl. an Stoßdämpfern und/oder pneumatischen oder hydropneumatischen Abfederungen beschrieben. Die Fig. 3 zeigt dort eine Befestigungsart eines Schlauches in einem Rohrstück. Das Rohrstück ist zylindrisch-glatt. Da das mit einem innenliegenden Befestigungsring eingespannte Schlauchstück geradlinig verläuft, erscheint eine für Luftfedern erforderliche Ausreißfestigkeit nicht gegeben.In utility model auxiliary application 70 18 029, a fastening for rubber bellows, hoses or the like is described on shock absorbers and / or pneumatic or hydropneumatic suspensions. 3 shows a type of attachment of a hose in a piece of pipe. The pipe section is cylindrical and smooth. Since the piece of hose clamped with an internal fastening ring runs in a straight line, the required pull-out strength for air springs does not appear to be given.
Die Fig. 1 desselben Gebrauchsmusters zeigt in ihrem unteren Teil ein an einem Zylinder mittels eines Spannringes befestigtes Schlauchende. Im Befestigungsbereich ist der Zylinder nicht einfach glatt ausgebildet sondern weist eine Sicke auf. Die Herstellung der Sicke erfordert einen zusätzlichen Fertigungsaufwand. Da das Schlauchstück geradlinig verläuft, scheint auch Wer eine Ausreißfestigkeit nicht gegeben zu sein. Die DE 195 28 854 AI befasst sich mit der Befestigung eines Endes eines Luftfeder- Rollbalgs an eine Armatur. Die Fig. 2 zeigt eine mehr oder weniger zylindrisch-glatte Armatur. Der mittels einer Innenklemmung daran angebrachte Rollbalg erfährt eine U- förmige (180°-)Umlenkung im Befestigungsbereich. Bei dieser Befestigungsart kann nur eine geringe Zugfestigkeit erwartet werden. Die Fig. la, lb und lc derselben Schrift zeigen eine aus Deckel und Stützrohr bestehende, zweiteilige Armatur, wobei ein Balg-Ende mittels Bördelung zwischen den beiden Befestigungsteilen eingeklemmt wird. Diese Befestigungsart setzt eine zweiteilige Armatur voraus.Fig. 1 of the same utility model shows in its lower part a hose end attached to a cylinder by means of a clamping ring. In the fastening area, the cylinder is not simply smooth, but has a bead. The production of the bead requires additional manufacturing effort. Since the piece of tubing runs in a straight line, anyone who does not seem to be able to pull out seems to be there. DE 195 28 854 AI deals with the attachment of one end of an air spring bellows to a valve. Fig. 2 shows a more or less cylindrical-smooth fitting. The bellows attached to it by means of an internal clamp undergoes a U-shaped (180 °) deflection in the fastening area. Only a low tensile strength can be expected with this type of fastening. FIGS. 1 a, 1 b and 1 c of the same document show a two-part fitting consisting of a cover and a support tube, a bellows end being clamped between the two fastening parts by means of a flange. This type of fastening requires a two-part fitting.
Die in der DE 199 07 656 AI beschriebene Befestigung eines Luftfeder-Rollbalgs an einem Stützteil zeigt in Fig. 4, oben, einen mit Nut versehenen Luftfederdeckel, an dem ein Schlauchrollbalg durch Außenklemmung befestigt ist. Auch hier ist die Herstellung der Nut mit einem zusätzlichen Fertigungsaufwand verbunden. Wegen der nur geringen Umlenkung des Balges im Befestigungsbereich erscheint eine Ausreißfestigkeit fraglich. Dieselbe Fig. 4 zeigt in ihrem unteren Bereich die Befestigung des SchlauchiOllbalgs an einem Abrollkolben. Der Balg ist in seinem Befestigungsbereich U-förmig, d. h. um 180° umgelenkt und zusätzlich mit einem zweiten Spannring verklemmt.The attachment of an air spring bellows to a support part described in DE 199 07 656 AI shows in Fig. 4, above, a grooved air spring cover to which a hose bellows is attached by external clamping. Here too, the production of the groove is associated with an additional manufacturing outlay. Because of the small deflection of the bellows in the fastening area, a pull-out strength appears questionable. The same FIG. 4 shows in its lower area the fastening of the tubular oil bellows to a rolling piston. The bellows is U-shaped in its fastening area, i. H. deflected by 180 ° and additionally clamped with a second clamping ring.
Ein besonderer fertigungstechnischer Aufwand ergibt sich mit der Befestigung desA special manufacturing expenditure arises with the attachment of the
Rollbalgs an Deckel und Abrollkolben gemäß DE 3246 962 C2, Fig. 1. Die Herstellung einer Armatur mit in axialer Richtung eingestochener Ringnut erfordert eine besondere Präzision. Wegen der nur geringen Umlenkung des Rollbalgs ist außerdem eine nur geringe Zugfestigkeit zu erwarten.Roll bellows on the cover and rolling piston according to DE 3246 962 C2, Fig. 1. The production of a valve with an axially grooved ring groove requires special precision. Because the bellows is deflected only slightly, a low tensile strength is also to be expected.
Um dem entgegenzuwirken werden in der Regel konturierte Armaturen (Körper mit „Schulter") eingesetzt, wobei die Schulter das axiale Verschieben verhindern soll. Solche konturierten Armaturen setzen eine spezielle konstruktive Ausgestaltung der Luftfeder voraus. Auch ist die Herstellung von Armaturen, die eine Schulter aufweisen, mit einem zusätzlichen Aufwand verbunden. Aufgabe der ErfindungTo counteract this, contoured fittings (body with a “shoulder”) are generally used, the shoulder being intended to prevent axial displacement. Such contoured fittings require a special structural design of the air spring. Also, the manufacture of fittings that have a shoulder , associated with an additional effort. Object of the invention
Es soll eine ausreißfeste und druckdichte Anbringung eines Schlauclirollbalgs an eine Luftfederarmatur beschrieben werden, die zudem einfach und kostengünstig ist.A tear-resistant and pressure-tight attachment of a claw roller bellows to an air spring fitting is to be described, which is also simple and inexpensive.
Lösung und VorteileSolution and advantages
Die Lösung dieser Aufgabe ist mit den Merkmalen des Anspruchs 1 umschrieben. Bevorzugte Ausgestaltungen sind aus den Unteransprüchen ersichtlich.The solution to this problem is described with the features of claim 1. Preferred configurations are evident from the subclaims.
Der erfindungswesentliche Kern der Rollbalg-Befestigung ist in einer 360°-Umlenkung zu sehen. Dabei wird der Balg von innen nach außen über den Spannring geführt und verhindert somit ein axiales Verschieben des Verbundes. Der grundsätzliche Vorteil dieser 360°-Umlenkung des zu befestigenden Rollbalg-Endes besteht in einer besonders guten Ausreißfestigkeit des Balges bei Anwendung von Zugkräften in seiner Längsrichtung. Da sich durch die Anwendung von Zugkräften gewissermaßen ein Strammzieh- Vorgang ergibt, wird das Balgende dadurch noch fester gezurrt.The core of the roll bellows fastening, which is essential to the invention, can be seen in a 360 ° deflection. The bellows is guided from the inside to the outside over the clamping ring and thus prevents the composite from moving axially. The fundamental advantage of this 360 ° deflection of the roll bellows end to be fastened is that the bellows has a particularly good pull-out strength when tensile forces are applied in its longitudinal direction. Since a pulling process results from the application of tensile forces, the bellows is lashed even tighter.
Mit dem erfindungsgemäßen Prinzip der 360°-Umlenkung kann auf eine (teure) Schulter verzichtet werden. Die Ausreißgefahr des Balges bei Anwendung von Zugkräften kann weiter verringert werden, wenn das Balgende nicht bündig mit dem Ende der Armatur fluchtet sondern noch leicht über das Ende der Armatur hinausragt, so dass das Balgende bei feitig montierter Luftfeder um das Ende der Armatur umgeschlagen ist.With the principle of the 360 ° deflection according to the invention, an (expensive) shoulder can be dispensed with. The risk of the bellows tearing out when using tensile forces can be further reduced if the bellows end is not flush with the end of the valve but rather protrudes slightly beyond the end of the valve, so that the bellows end is turned around the end of the valve when the air spring is installed.
Zwecks leichterer Justage des Balgendes kann in jedem Fall der jeweiüge Kontaktbereich Balgende/Spannring mit Hilfe eines Klebers oder durch Vulkanisation fixiert werden.In order to make it easier to adjust the end of the bellows, the respective contact area of the bellows / clamping ring can be fixed with the help of an adhesive or by vulcanization.
Um eine Zerstörung des Rollbalg-Endes im Langzeitbetrieb der Luftfeder zuverlässig zu verhindern, ist gemäß einer Weiterbildung der Erfindung vorgesehen, das Rollbalgende mit einer einsclmeidfesten Oberfläche zu versehen und/oder die „oberen" und „unteren" Enden des Spannringes und des „oberen" Endes der Armatur so zu gestalten, dass scharfkantige Ränder vermieden werden und das umgelegte Rollbalg-Ende eine mehr oder weniger süOmlinienförmige Gestalt annimmt.In order to reliably prevent the end of the bellows from being destroyed during long-term operation of the air spring, it is provided according to a further development of the invention to provide the end of the bellows with a surface that is resistant to trapping and / or the “upper” and “lower” ends of the clamping ring and the “upper” Design the end of the fitting so that it has sharp edges Edges are avoided and the folded bellows end assumes a more or less southern line shape.
Zeichnungendrawings
Ein Ausfuhrungsbeispiel der Erfindung und verschiedene Fertigungsschritte sind in den Zeichnungen dargestellt und werden in der folgenden Beschreibung näher erläutert. Es zeigt:An exemplary embodiment of the invention and various manufacturing steps are shown in the drawings and are explained in more detail in the following description. It shows:
Fig. 1 den Längsschnitt durch eine Luftfeder, ausschnittsweise im Befestigungsbereich Schlauchrollbalg/Armatur;Figure 1 shows the longitudinal section through an air spring, sections in the fastening area hose bellows / fitting.
Fig. 2 und 3 Fertigungsscliritte unterschiedlicher Befestigungsarten anhand der ausschπittsweisen Darstellung verschiedener Luftfedern, im Längsschnitt.2 and 3 manufacturing steps of different types of fastening based on the sectional representation of various air springs, in longitudinal section.
Beschreibungdescription
Eine Rollbalg-Luftfeder besteht im Wesentlichen aus einem Rollbalg 2, der von zwei abstandsvaiiabel zueinander angeordneten Endgliedern 4, 6 (Deckel 4 und Abrollkolben 6) druckdicht und zugfest begrenzt wird.A bellows air spring essentially consists of a bellows 2, which is delimited in a pressure-tight and tensile manner by two end members 4, 6 (cover 4 and rolling piston 6) arranged spaced apart from one another.
Da der generelle Aufbau einer Luftfeder als bekannt vorausgesetzt werden kann, soll hier auf eine vollständige Beschreibung und bildliche Darstellung einer Luftfeder verzichtet werden.Since the general structure of an air spring can be assumed to be known, a complete description and pictorial representation of an air spring should be dispensed with here.
Die Erfindung befasst sich ausschließlich mit der Befestigung des Rollbalg-Endes an dem jeweiligen Luftfeder-Endglied (Armatur) mit Hilfe mindestens eines innenliegenden Spannringes.The invention is concerned exclusively with the fastening of the bellows end to the respective air spring end member (fitting) with the aid of at least one internal tension ring.
In der Fig. 1 ist mit „4" bzw. „6" das Ende einer Luftfeder- Armatur (Deckel 4 oder Abrollkolben 6) gekennzeichnet. „2" bedeutet einen Schlauchrollbalg und „8" einen innenüegenden Spannring. Der Pfeil F 7 gibt die Kraftrichtung der unter Druck stehenden Luftfeder an (Luftfeder-Längsachse 10). In dem dargestellten Ausführungsbeispiel endet der Schlauclirollbalg 2 bündig mit der Armatur 4 bzw. 6, wobei das Rollbalg-Ende zwischen der Innenseite der Armatur 4 bzw. 6 und dem innenliegenden Spannring 8 eingeklemmt ist. Außerdem ist aus der Abbildung zu entnehmen, dass der Rollbalg 2 um den Spanming 8 herumgeführt wird und dann über die Kante der Armatur 4 bzw. 6 an deren Außenseite gelenkt wird. Auf diese Weise ergibt sich insgesamt eine 360°- Umlenkung des Rollbalg-Endes.In Fig. 1, "4" or "6" denotes the end of an air spring fitting (cover 4 or rolling piston 6). "2" means a hose bellows and "8" an internal clamping ring. The arrow F 7 indicates the direction of force of the pressurized air spring (air spring longitudinal axis 10). In the exemplary embodiment shown, the claw rolling bellows 2 ends flush with the fitting 4 or 6, the rolling bellows end between the inside of the fitting 4 or 6 and the inner clamping ring 8 is jammed. In addition, it can be seen from the figure that the bellows 2 is guided around the Spanming 8 and is then directed over the edge of the valve 4 or 6 on the outside thereof. In this way, there is an overall 360 ° deflection of the end of the bellows.
Die Armatur 4 bzw. 6 ist vorzugsweise der Abrollkolben 6 der Luftfeder, wobei sich im Endbereich des Rollbalgs 2 üblicherweise eine Rollfalte 2a ergibt. Auch im Fall, dass die dargestellte Armatur 4 bzw. 6 ein Luftfederdeckel sein soll, ist ebenfaUs eine zumindest kleine Rollfalte 2a vorhanden, so dass hier ebenfalls die erfindungswesentliche 360°-Umlenkung des Rollbalg-Endes reaüsiert ist.The armature 4 or 6 is preferably the rolling piston 6 of the air spring, a rolling fold 2a usually resulting in the end region of the bellows 2. Also in the event that the valve 4 or 6 shown is to be an air spring cover, there is also an at least small rolling fold 2a, so that the 360 ° deflection of the end of the bellows, which is essential to the invention, is also reactivated here.
Gemäß Fig. 2 wird das Rollbalg-Ende zunächst zwischen dem Ende der Armatur 4 bzw. 6 und dem Spannring 8 eingelegt. Dann erfolgt eine sogenannte „aktive" Klemmung von außen. Dabei wird die Armatur 4 bzw. 6 in radialer Richtung so weit zusammengedrückt, bis die gewünschte Klemmwirkung erreicht ist. Anschließend wird der Rollbalg 2 zunächst um 180° um den Spanming 8 gelegt (siehe Abbildung) und dann weiter über die Kante der Armatur 4 bzw. 6 nach außen gelenkt bis die 360°-Umlenkung gemäß Fig. 1 erreicht ist.2, the end of the bellows is first inserted between the end of the fitting 4 or 6 and the clamping ring 8. Then there is a so-called "active" clamping from the outside. The valve 4 or 6 is pressed together in the radial direction until the desired clamping effect is achieved. The bellows 2 is then first placed 180 ° around the Spanming 8 (see illustration ) and then further directed outwards over the edge of the fitting 4 or 6 until the 360 ° deflection according to FIG. 1 is reached.
Die Fig. 3 stellt einen Fertigungsschritt einer sogenannten „passiven" Klemmung dar. Auch hier wird das Sclilauchrohbalg-Endc zunächst zwischen einem (ersten) Spannring 8 und der Innenkante der Armatur 4 bzw. 6 eingelegt. Dann wird der Rollbalg 2 U-förmig, d. h. um 180° um den Spannring 8 herumgelegt. An der Innenseite des umgelegten Rollbalgs 2 wird ein zweiter Spanming 12 angebracht, der mit einem axial- verschieblichen dritten Spannring 14 in der Weise verklemmt wird, dass sowohl eine Klemmwirkung auf das zwischen Armatur 4 bzw. 6 und erstem Spannring 8 befindliche Rollbalg-Ende als auch eine Klemmwirkung auf den zwischen erstem 8 und zweitem Spannring 12 befindlichen Rollbalg- Abschnitt ausgeübt wird. Somit ergibt sich eine zweifache Einspannung des Rollbalg-Endes.3 shows a manufacturing step of a so-called "passive" clamping. Here too, the sclilauchrohgg endc is first inserted between a (first) clamping ring 8 and the inner edge of the fitting 4 or 6. Then the rolling bellows 2 is U-shaped, ie around 180 ° around the clamping ring 8. On the inside of the folded bellows 2, a second span ring 12 is attached, which is clamped with an axially displaceable third clamping ring 14 in such a way that both a clamping effect on the between valve 4 or 6 and the first clamping ring 8, the rolling bellows end as well as a clamping effect is exerted on the rolling bellows section located between the first 8 and second clamping ring 12. This results in a double clamping of the rolling bellows end.
Der letzte Schiitt besteht auch liier in einer weiteren 180°-Umlenkung des Rollbalgs 2, so dass auch liier insgesamt eine 360°-Umlenkung gemäß Fig. 1 erzielt wird. BezugszeichenlisteThe last shot also consists of a further 180 ° deflection of the roller bellows 2, so that a 360 ° deflection according to FIG. 1 is also achieved overall. LIST OF REFERENCE NUMBERS
2 Rollbalg, Schlauchrollbalg2 roll bellows, hose roll bellows
4,6 Luftfeder-Endglied, (Luftfeder-)Armatur4.6 Air spring end link, (air spring) fitting
4 (Luftfeder-)Deckel4 (air spring) covers
6 Abrollkolben6 rolling pistons
8 (erster) Spannring8 (first) clamping ring
10 Luftfeder-Längsachse10 Air spring longitudinal axis
12 zweiter (weiterer) Spannring12 second (further) clamping ring
14 dritter Spannring14 third clamping ring
F 7I Kraftrichtung F 7I direction of force

Claims

Patentansprüche claims
1. Befestigung eines Luftfeder-Rollbalgs (2) an einer Armatur (4, 6) (Deckel, 4, und/oder Abrollkolben, 6), wobei die Befestigung mit Hilfe eines Spannringes (8) erfolgt, dadurch gekennzeichnet,1. Attachment of an air spring roller bellows (2) to a fitting (4, 6) (cover, 4, and / or rolling piston, 6), the attachment being carried out with the aid of a clamping ring (8), characterized in that
- dass der Spannring (8) an der Innenseite der Armatur (4, 6) angeordnet ist, - dass sich das Ende des Rollbalgs (2) zwischen der Armatur (4, 6) und dem Spannring (8) befindet, wobei das freie Ende des Rollbalgs (2) dieselbe Richtung wie die Kante der Armatur (4, 6) aufweist, und- That the clamping ring (8) is arranged on the inside of the valve (4, 6), - That the end of the bellows (2) is between the valve (4, 6) and the clamping ring (8), the free end of the bellows (2) has the same direction as the edge of the fitting (4, 6), and
- dass der Rollbalg (2) um die Innenseite des Spanminges (8) umgeschlagen und dann über die Sclimalseite des Spanminges (8) und die Kante der Armatur (4, 6) zu ihrer Außenseite geführt ist, wodurch eine 360°-Umlenkung des Rollbalg-Endes gegeben ist.- That the rolling bellows (2) folded over the inside of the Spanminges (8) and then over the Sklimalseite the Spanminges (8) and the edge of the valve (4, 6) to its outside, causing a 360 ° deflection of the rolling bellows -The end is given.
2. Rollbalg-Befestigung nach Anspruch 1, dadurch gekennzeichnet, dass das Balg-Ende nicht bündig mit der Kante der Armatur (4, 6) fluchtet sondern über die Kante der Armatur (4, 6) hinausragt, so dass das Balg-Ende bei fertig montierter Luftfeder um das Ende der Armatur (4, 6) umgebogen ist.2. Roll bellows fastening according to claim 1, characterized in that the bellows end is not flush with the edge of the valve (4, 6) but projects beyond the edge of the valve (4, 6), so that the bellows end at fully assembled air spring is bent around the end of the fitting (4, 6).
3. Rollbalg-Befestigung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Kontaktbereich Balgende/Klemmring - zwecks leichterer Justage des Balgendes - mit Hilfe eines Klebers oder durch Vulkanisation fixiert ist.3. Roll bellows fastening according to claim 1 or 2, characterized in that the contact area bellows / clamping ring - for the purpose of easier adjustment of the bellows end - is fixed with the aid of an adhesive or by vulcanization.
4. Rollbalg-Befestigung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Rollbalg-Ende mit einer einschneidfesten Oberfläche versehen ist und/oder die „oberen" und „unteren" Enden des Klemmringes (8) und des „oberen" Endes der Armatur (4, 6) so gestaltet sind, dass scharfkantige Oberflächen vermieden werden und das umgelegte Rollbalg-Ende einer abgerundeten Kontur folgt.4. Roll bellows fastening according to one of claims 1 to 3, characterized in that the roll bellows end is provided with a cut-resistant surface and / or the "upper" and "lower" ends of the clamping ring (8) and the "upper" end of the fitting (4, 6) are designed such that sharp-edged surfaces are avoided and the folded bellows end follows a rounded contour.
5. Verfahren zur Befestigung des Endes eines Luftfeder-Rollbalgs (2) an eine Luftfeder- Armatur (4, 6) (Deckel, 4 und/oder Abrollkolben, 6), wobei die Befestigung mit Hilfe eines innen angeordneten Spanminges (8) erfolgt, gekennzeichnet durch eine „aktive" Klemmung, wobei zunächst der Balg (2) in der Weise in die Armatur (4, 6) gelegt wird, dass das Ende des Balgs (2) mit der Kante der Armatur (4, 6) fluchtet, dass dann ein Spannring (8) an der Innenseite des Rollbalg-Endes angeordnet wird, und dass zwecks Einspannung des zwischen Armatur (4, 6) und Spannring (8) befindlichen Balgendes eine zentripetale Klemmkraft auf die Außenseite der Armatur (4, 6) ausgeübt wird, dass dann der Rollbalg (2) um die Innenseite des Spannringes (8) umgeschlagen und schließlich über die Schmalseite des Spannringes (8) und die Kante der Armatur (4, 6) zur5. Method for fastening the end of an air spring bellows (2) to an air spring fitting (4, 6) (cover, 4 and / or rolling piston, 6), the fastening being carried out with the aid of an internally arranged chip ring (8), characterized by an "active" clamping, the bellows (2) first being placed in the fitting (4, 6) in such a way that the end of the bellows (2) is flush with the edge of the fitting (4, 6) that then a clamping ring (8) is arranged on the inside of the roll bellows end, and a centripetal clamping force is exerted on the outside of the valve (4, 6) in order to clamp the bellows end between the valve (4, 6) and the clamping ring (8) that then the bellows (2) folded over the inside of the clamping ring (8) and finally over the narrow side of the clamping ring (8) and the edge of the valve (4, 6)
Außenseite der Armatur (4, 6) geführt wird.Outside of the valve (4, 6) is guided.
6. Verfahren zur Befestigung des Endes eines Luftfeder-Rollbalgs (2) an eine Luftfeder- Armatur (4, 6) (Deckel, 4 und/oder Abrollkolben, 6), wobei die Befestigung mit Hilfe eines innen angeordneten Spannringes (8) erfolgt, gekennzeichnet durch eine „passive" Klemmung, wobei zunächst der Balg (2) in der Weise in die Armatur (4, 6) gelegt wird, dass das Ende des Balgs (2) mit der Kante der Armatur (4, 6) fluchtet, dass dann ein Spannring (8) an der Innenseite des Rollbalg-Endes angeordnet, der Rollbalg (2) um die Innenseite des Spannringes (8) umgeschlagen und ein weiterer (zweiter) Spanming (12) an der Innenseite des umgelegten Bauabschnitts angeordnet wird, und dass schließlich die Klemmung der zwischen Armatur (4, 6) und den Spannringen (8) und (12) befindlichen Rollbalgs (2) durch axiales Einschieben eines weiteren Klemmringes (14) an der Innenseite des inneren (12) der beiden ersten Klemmringe (8, 12) erfolgt.6. A method for fastening the end of an air spring bellows (2) to an air spring fitting (4, 6) (cover, 4 and / or rolling piston, 6), the fastening being carried out with the aid of an internally arranged clamping ring (8), characterized by a "passive" clamping, the bellows (2) first being placed in the fitting (4, 6) in such a way that the end of the bellows (2) is flush with the edge of the fitting (4, 6) that then a clamping ring (8) is arranged on the inside of the roll bellows end, the roll bellows (2) is turned around the inside of the clamping ring (8) and a further (second) Spanming (12) is arranged on the inside of the folded section, and that finally the clamping of the bellows (2) located between the fitting (4, 6) and the clamping rings (8) and (12) by axially inserting a further clamping ring (14) on the inside of the inner (12) of the first two clamping rings (8 , 12) takes place.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass ein weiterer Schiitt zur Montage des Rollbalg-Endes an einer Armatur (4, 6) in einem Umlegen des Balgs (2) über das Ende der Armatur (4, 6) an deren Außenseite besteht. 7. The method according to claim 6, characterized in that a further Schiitt for mounting the bellows end on a valve (4, 6) in a folding of the bellows (2) over the end of the valve (4, 6) on the outside ,
PCT/EP2004/051240 2003-08-30 2004-06-25 Method for fixing a pneumatic spring rolled bellows to a mounting WO2005024265A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10340091.5 2003-08-30
DE2003140091 DE10340091A1 (en) 2003-08-30 2003-08-30 Attaching an air spring bellows to a fitting

Publications (1)

Publication Number Publication Date
WO2005024265A1 true WO2005024265A1 (en) 2005-03-17

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Cited By (3)

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US7325794B2 (en) 2005-06-06 2008-02-05 Bfs Diversified Products, Llc Air spring assembly and method
US7404547B2 (en) 2005-07-27 2008-07-29 Bfs Diversified Products, Llc Multi-component end member assembly and air spring assembly including the same
DE102008034834A1 (en) * 2008-07-24 2010-02-04 Carl Freudenberg Kg Fixing unit for fixing outer spring bellow to inner side of closing unit of air spring, has spring bellow that is placed with its section edge around inner ring which lies outside pressure chamber

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DE102006037664B4 (en) * 2006-08-11 2022-01-05 Continental Teves Ag & Co. Ohg Method for clamping a hose roll bellows of an air spring
DE102018215378A1 (en) * 2018-09-11 2020-03-12 Continental Teves Ag & Co. Ohg Air spring with reinforced clamping

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US4793598A (en) * 1986-09-24 1988-12-27 The Firestone Tire & Rubber Company Air spring having internal sealing band and method of installing same
DE19528854A1 (en) 1995-08-05 1997-02-06 Continental Ag Airtight fixture of one end of air spring roller bellows - is for bellows guide within support tube divided cross-ways, tube forming unit with cover pot
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US7325794B2 (en) 2005-06-06 2008-02-05 Bfs Diversified Products, Llc Air spring assembly and method
US7404547B2 (en) 2005-07-27 2008-07-29 Bfs Diversified Products, Llc Multi-component end member assembly and air spring assembly including the same
DE102008034834A1 (en) * 2008-07-24 2010-02-04 Carl Freudenberg Kg Fixing unit for fixing outer spring bellow to inner side of closing unit of air spring, has spring bellow that is placed with its section edge around inner ring which lies outside pressure chamber
DE102008034834B4 (en) * 2008-07-24 2018-02-15 Vibracoustic Gmbh Air spring and strut

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