EP3580463A1 - Cylinder-piston device having at least one inner tube and at least one outer tube - Google Patents

Cylinder-piston device having at least one inner tube and at least one outer tube

Info

Publication number
EP3580463A1
EP3580463A1 EP18704936.6A EP18704936A EP3580463A1 EP 3580463 A1 EP3580463 A1 EP 3580463A1 EP 18704936 A EP18704936 A EP 18704936A EP 3580463 A1 EP3580463 A1 EP 3580463A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
tube
inner tube
outer tube
piston device
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.)
Granted
Application number
EP18704936.6A
Other languages
German (de)
French (fr)
Other versions
EP3580463B1 (en
Inventor
Hans-Peter Lavergne
Anton STAIMER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Components Kirchdorf GmbH
Original Assignee
Liebherr Components Kirchdorf GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Liebherr Components Kirchdorf GmbH filed Critical Liebherr Components Kirchdorf GmbH
Publication of EP3580463A1 publication Critical patent/EP3580463A1/en
Application granted granted Critical
Publication of EP3580463B1 publication Critical patent/EP3580463B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1438—Cylinder to end cap assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/405—Housings
    • F15B2201/4056—Housings characterised by the attachment of housing components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
    • F15B2215/30—Constructional details thereof
    • F15B2215/305—Constructional details thereof characterised by the use of special materials

Definitions

  • Cylinder-piston device with at least one inner tube and at least one outer tube
  • the invention relates to a cylinder-piston device with at least one inner tube and at least one outer tube, wherein the inner tube is at least partially supported within the outer tube, with at least one cylinder head, with at least one piston rod bearing and at least one sleeve.
  • a notched ring is wrapped in the manufacturing process of the cylinder tube together with this.
  • the notch of the ring ring elements are inserted and clamped with a two-piece tail.
  • a disadvantage of the said devices are the complicated production and / or assembly required for their production and the use of complex and correspondingly expensive individual components.
  • a cylinder-piston device which can be produced particularly easily and which is better suited for the use or load of the device occurring buckling and / or bending forces and by the pressurized fluid on the Cylinder piston device to absorb acting pressure forces.
  • a cylinder-piston device with the features of claim 1.
  • Advantageous embodiments are the subject of the dependent claims. Accordingly, a cylinder-piston device is provided with at least one inner tube and at least one outer tube, wherein the inner tube is at least partially supported within the outer tube.
  • the cylinder Piston device further comprises at least one cylinder head, at least one piston rod bearing and at least one sleeve.
  • the cylinder-piston device may comprise a piston with a corresponding piston head.
  • the at least one sleeve can be designed to determine the inner tube and / or the outer tube on the piston rod bearing and / or on the cylinder head, in particular in a force-locking and / or form-fitting manner.
  • means for a cohesive bond of said components can be provided in the coupling region defined here, alternatively or additionally.
  • the coupling can therefore be chosen almost arbitrarily and also combined.
  • the at least one cuff may, according to a preferred but not to be envisaged embodiment, at least one slotted end portion of the inner tube and / or the outer tube to the cylinder head and / or to determine the piston rod bearing.
  • the cuff may be at least partially concave in the region in which it rests against the slotted end region.
  • the terms of the cylinder head, the piston rod bearing and the end portions are to be interpreted broadly and may refer to features that are similar in function to the features described.
  • the cylinder head and / or the piston rod bearing can therefore designate components which limit or close a cylinder-piston device in the axial outward direction.
  • the slotted end regions may mean axially outer regions of the tubes which do not have a planar outer surface but comprise, for example, regularly or irregularly arranged recesses.
  • the inventively designed coupling mechanism between the tubes and the cylinder head or the piston rod bearing allows the use of particularly easy to manufacture tube blanks for manufacturing the inner tube and / or the outer tube. This in turn requires a particularly flexible production of cylinder-piston devices according to the invention with different Chen dimensions of a variable modular system of the necessary components.
  • the inner tube and / or the outer tube and / or the sleeve made of a fiber composite plastic and / or are made of a metal. It is therefore also conceivable that at least a part of said components is made of a fiber composite plastic, while another part of said components is made of a metal. Also conceivable are combined components in which both one metal or several metals as well as fiber composite plastics or a fiber composite plastic are used. The use of a fiber composite plastic or of fiber composite plastics makes the production advantageously easier cylinder piston devices possible.
  • the inner tube and / or the outer tube are at least partially closed by the cylinder head and / or the piston rod bearing.
  • the axially outer regions of the inner tube and / or of the outer tube can thus be closed at least partially with a particularly at least partially circular or annular surface.
  • the term of the cylinder tube may refer to one of the two tubes inner tube or outer tube or include both tubes.
  • the sleeve in particular pressed, onto tongues of the inner tube and / or the outer tube, in particular radially outwards. Formations or sections in the axial end regions of the tubes can be formed with the tongues of the tubes mentioned. be thought, which are formed by the slotted design of the end portions as tongue-shaped, lug-shaped or similar portions of the tubes and extend in particular in the axial direction outwardly away from the remaining structure of the tubes or of the tube.
  • the sleeve can be arranged at least partially in the radial direction further out than the tongues.
  • a radially inner portion of the collar may be in direct or indirect contact with a radially outer portion of the tongues. By indirect contact is meant in particular a contact of the respective sections, in which an additional adhesive is provided between the tongues and the sleeve.
  • the tongues can be particularly easily pressed or bent by the cuffs against other components of the cylinder-piston device and thereby the coupling of said components can be particularly easily effected.
  • adhesive is provided in the region of the tongues.
  • the adhesive can improve the coupling between said components and also exert a sealing effect for sealing the cylinder-piston device in the respective area.
  • a pressure-stable filler in particular made of plastic, wood and / or metal, is provided between the inner tube and the outer tube.
  • a pressure-stable filler in particular made of plastic, wood and / or metal, is provided between the inner tube and the outer tube.
  • the pressure-stable filler a better power transmission between the inner tube and the outer tube can be made possible and so the pressure load, for example, of the inner tube can be reduced.
  • the stability of the cylinder-piston device with respect to other loads than the pressure load can be improved. In particular, the stability of the cylinder-piston device with respect to buckling and / or bending loads can be increased.
  • the inner tube is at least partially within the outer tube and / or concentric with it is stored. In a further preferred embodiment it can be provided that the inner tube is shorter than the outer tube.
  • the difference in length between the tubes may correspond substantially to the axial extent of two sleeves. In this case, a length difference is conceivable which corresponds for example to more than 50% of the summed axial extent of the two sleeves and in particular more than 80% of the summed axial extent of the two sleeves.
  • the inner tube and / or the outer tube can comprise two slotted end regions which lie opposite one another.
  • the two slotted end portions can be provided in each case on axially opposite sides of the respective tube.
  • the invention is further directed to a pressure accumulator or an actuator with at least one cylinder-piston device according to one of claims 1 to 9.
  • Figure 1 an external view of a cylinder-piston device according to the invention
  • Figure 2 is a longitudinal sectional view of a cylinder-piston device according to the invention.
  • 3a and 3b detailed views for coupling the individual components of the cylinder-piston device according to the invention.
  • FIG. 1 shows an external view of a cylinder-piston device according to the invention, wherein an outer tube 7 of the cylinder of the cylinder-piston device is shown externally, at the two axial end regions of which there is respectively a sleeve 5 for coupling at least part of the components of the cylinder. the piston device is provided.
  • an end region of a piston 1 mounted at least partly within the cylinder 7 is shown, which can comprise an eye or a bushing for coupling the cylinder-piston device with other devices.
  • a second eye or a second passage is shown, which may be associated with a partially visible cylinder head 4, which may be at least partially received by the upper sleeve 5 or included.
  • Figure 2 shows a longitudinal sectional view of a cylinder-piston device according to the invention, in which a piston 1 is slidably mounted within the complex cylinder of the cylinder-piston device.
  • the cylinder in this case comprises an inner tube 6 and an inner tube 6 surrounding the outer tube 7, which may be arranged coaxially with each other.
  • the piston 1 has a piston head 2, which is mounted displaceably within the inner ear 6.
  • a seal 10 can seal the sealing gap between the piston head 2 and the inner tube 6.
  • a cylinder head 4 may be adapted to be coupled to both pipes 6, 7.
  • an in particular cylindrical elevation 41 may be provided in an axially central region of the cylinder head 4, in whose lateral surface or in the lateral surface region of a seal 1 1 may be provided.
  • the seal 1 1 may be adapted to seal the sealing gap between the elevation 41 and the inner tube 6.
  • the cylinder head 4 may further comprise on a radially outer side and in particular on a radially furthest surface a radially inwardly curved portion, on which one of the tubes 6, 7 can abut with its slotted end portion 71.
  • the slotted end region 71 of the corresponding tube 6, 7 can be pressed against the cylinder head 4 by the sleeve 5, wherein the slotted end regions 71 or the slotted end region 71 can be curved radially inwards.
  • a piston rod bearing 3 is provided, in which the piston rod 1 is slidably mounted.
  • the sealing gap between the piston rod 1 and the bearing 3 can be sealed by at least one seal 8. It is also conceivable embodiment with three corresponding seals. 8
  • a seal 9 for sealing the corresponding sealing gap can also be provided between the piston rod bearing 3 and the inner tube 6.
  • the sleeve 5 may be non-positively and / or positively connected to at least one of the tubes 6, 7. For this purpose, it is conceivable to press the sleeve 5 to the respective components, to screw with the rod bearing 3 and / or with the cylinder head 4 and / or otherwise to couple.
  • Figures 3a and 3b show the corresponding coupling region of the sleeve 5 in a side or an exploded perspective view.
  • the slotted end portions 71 of the tube 6, 7 can be slotted in the axial direction, in particular, identical tongues can be worked out of the tubes 6, 7.
  • the tongues can be made in one piece with the rest of the structure of the tube or tubes 6, 7.
  • both tubes 6, 7 are each pressed by their own sleeve 5 onto, for example, the piston rod bearing 3 and / or the cylinder head 4, wherein the two sleeves 5 can be at least partly supported one inside the other and can comprise, for example, bushings or at least one bushing through which the internally mounted piston rod bearing 3 or the internally mounted cylinder head 4 can be performed by the cuffs 5 to the outside.
  • the cuffs 5 can be made according to different diameters.
  • the inner tube 6 and / or the outer tube 7 may be made of a fiber composite plastic. Also conceivable are embodiments in which one of the tubes 6, 7 is made of one material, while the other tube 6, 7 is made of a different material.
  • the inner tube 6 and / or the outer tube 7 may be at least partially in their respective ceiling area or floor area, i. their axially outer openings or sections by means of the cylinder head 4 and / or closed by means of the piston rod bearing 3.
  • planar and further, in particular parallel arranged closure portions may be provided on the cylinder head 4 and / or on the piston rod bearing 3. These may be circular or annular and may be arranged concentrically with each other.
  • the invention may relate to a hydraulic cylinder or actuator and / or to a pressure accumulator.
  • the case provided cylinder tube can be made in two parts.
  • An inner tube 6 may be at least partially supported within an outer tube 7.
  • the tubes can be made of fiber composite plastic or metal.
  • the inner tube 6 may be at least partially closed by the piston rod bearing 3 and the cylinder head 4. About this internal structure, the particular cylindrical outer tube 7 can be pushed or positioned. The outer tube 7 and / or the inner tube 6 may be slotted at their ends.
  • the tongues formed by the slots can be pressed firmly onto the rounded outer contours of the piston rod bearing 3 and / or the cylinder head 4 with a fiber composite sleeve 5, which is pressed from the outside.
  • the adhesive can increase the strength of the composite and also as a seal be used.
  • the outer tube 7 may represent a tie rod in this composite. But it can absorb pressure forces.
  • the inner tube 6 absorbs the hydraulic pressure forces and can also be biased. Between the inner and outer tubes 6, 7 can still be a pressure-resistant filler made of plastic, wood or metal are introduced to increase the stiffness or dent resistance.
  • the term of the end pieces may refer in the present case to the cylinder head 4 and / or to the piston rod bearing 3.
  • a non-positive and positive connection between at least the outer tube 7 and the cylinder head 4 and / or the piston rod bearing 3 consist, which makes it possible to initiate the tensile and compressive stresses in the tails.
  • a variable modular system for manufacturing the cylinder-piston device can further be provided, in which the use of easy-to-manufacture tube blanks is possible. Also, at least a part of the components or the semi-finished products can be produced in cost-effective and flexible continuous production. Overall, the geometry of the invention increases the area moment of inertia in the load case.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

The invention relates to a cylinder-piston device, having at least one inner tube (6) and at least one outer tube (7), the inner tube being mounted within the outer tube, at least one cylinder head (4), at least one piston rod bearing (3), and at least one sleeve (5).

Description

Zylinder-Kolben-Vorrichtung mit wenigstens einem Innenrohr und wenigstens einem Außenrohr  Cylinder-piston device with at least one inner tube and at least one outer tube
Die Erfindung betrifft eine Zylinder-Kolben-Vorrichtung mit wenigstens einem Innenrohr und wenigstens einem Außenrohr, wobei das Innenrohr wenigstens teilweise innerhalb des Außenrohrs gelagert ist, mit wenigstens einem Zylinderkopf, mit wenigstens einem Kolbenstangenlager und wenigstens einer Manschette. The invention relates to a cylinder-piston device with at least one inner tube and at least one outer tube, wherein the inner tube is at least partially supported within the outer tube, with at least one cylinder head, with at least one piston rod bearing and at least one sleeve.
Bei gemäß dem Stand der Technik gefertigten Zylinder-Kolben-Vorrichtungen ist es bekannt, zum Abschließen des Zylinders beispielsweise zwei übergroße Endstücke an den Endbereichen eines Zylinderrohrs einzupressen. Hierdurch kann ein Pressverband bereitgestellt werden und das Zylinderrohr je nach Wunsch abgeschlossen werden. In prior art cylinder-piston devices, for example, it is known to press two oversized end pieces at the end portions of a cylinder tube to close off the cylinder. As a result, a press fit can be provided and the cylinder tube can be completed as desired.
Aus dem Stand der Technik ist es auch bekannt, entweder Endstücke in ein Zylinderrohr einzukleben oder umgekehrt ein Zylinderrohr in Endstücke einzukleben. Es sind ferner Lösungen bekannt, bei denen mit Stacheln beschweißte Endstücke während des Herstellungsprozesses eines Zylinderrohrs in dieses mit eingewickelt werden. Bekannt sind auch Ausführungen, bei denen mit Wellen versehende Endstücke während des Herstellungsprozesses des Zylinderrohrs mit diesem eingewickelt werden. It is also known from the prior art to either glue end pieces into a cylinder tube or, conversely, glue a cylinder tube into end pieces. There are also known solutions in which barbs welded end pieces are wrapped during the manufacturing process of a cylinder tube in this. Embodiments are also known in which shafts provided with shafts are wrapped with it during the production process of the cylinder tube.
In anderen aus dem Stand der Technik bekannten Lösungen wird ein gekerbter Ring beim Herstellungsprozess des Zylinderrohrs gemeinsam mit diesem eingewickelt. In die Kerbe des Rings werden Ringelemente eingelegt und mit einem zweiteiligen Endstück festgeklemmt. In other solutions known from the prior art, a notched ring is wrapped in the manufacturing process of the cylinder tube together with this. In the notch of the ring ring elements are inserted and clamped with a two-piece tail.
Gemäß der sogenannten Darmstädter Behälter-Bauweise ist es ferner bekannt, zur Herstellung des Zylinderrohres ein an den Enden eingezogenes Faser-Kunststoff- Verbund-Rohr in die konische Aufnahme von Endstücken einzupressen und von innen mit einem nach innen gewölbten Boden zu verschließen. According to the so-called Darmstädter container design, it is also known to press a retracted at the ends fiber-plastic composite tube in the conical reception of end pieces and to close from the inside with an inwardly curved bottom for the production of the cylinder tube.
Nachteilig an den genannten Vorrichtungen sind die zu ihrer Herstellung erforderliche umständliche Fertigung und/oder Montage sowie die Verwendung komplexer und entsprechend teurer Einzel komponenten. A disadvantage of the said devices are the complicated production and / or assembly required for their production and the use of complex and correspondingly expensive individual components.
Vor diesem Hintergrund ist es Aufgabe der Erfindung eine Zylinder-Kolben- Vorrichtung bereitzustellen, die besonders einfach hergestellt werden kann und die besser dazu geeignet ist, bei der Benutzung bzw. Belastung der Vorrichtung auftretenden Knick- und/oder Biegekräfte sowie durch das Druckfluid auf die Zylinder- Kolben-Vorrichtung wirkende Druckkräfte aufzunehmen. Against this background, it is an object of the invention to provide a cylinder-piston device which can be produced particularly easily and which is better suited for the use or load of the device occurring buckling and / or bending forces and by the pressurized fluid on the Cylinder piston device to absorb acting pressure forces.
Diese Aufgabe wird erfindungsgemäß durch eine Zylinder-Kolben-Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche. Demnach ist eine Zylinder-Kolben-Vorrichtung mit wenigstens einem Innenrohr und wenigstens einem Außenrohr vorgesehen, wobei das Innenrohr wenigstens teilweise innerhalb des Außenrohrs gelagert ist. Die Zylinder- Kolben-Vorrichtung weist ferner mindestens einen Zylinderkopf, wenigstens ein Kolbenstangenlager und wenigstens eine Manschette auf. This object is achieved by a cylinder-piston device with the features of claim 1. Advantageous embodiments are the subject of the dependent claims. Accordingly, a cylinder-piston device is provided with at least one inner tube and at least one outer tube, wherein the inner tube is at least partially supported within the outer tube. The cylinder Piston device further comprises at least one cylinder head, at least one piston rod bearing and at least one sleeve.
Selbstverständlich kann die Zylinder-Kolben-Vorrichtung einen Kolben mit entsprechendem Kolbenkopf umfassen. Die wenigstens eine Manschette kann dazu ausgebildet sein, das Innenrohr und/oder das Außenrohr am Kolbenstangenlager und/oder am Zylinderkopf insbesondere kraftschlüssig und/oder formschlüssig festzustellen. In dem dabei definierten Kopplungsbereich können alternativ oder zusätzlich Mittel für einen stoffschlüssigen Verbund der genannten Komponenten vorgesehen sein. Die Kopplung kann demnach nahezu beliebig gewählt und auch kombiniert erfolgen. Die wenigstens eine Manschette kann gemäß einer bevorzugten aber nich zwigend vorzusehenden Ausführung wenigstens einen geschlitzten Endbereich des Innenrohrs und/oder des Außenrohrs an den Zylinderkopf und/oder an dem Kolbenstangenlager feststellen. Die Manschette kann dabei in dem Bereich, in dem sie an dem geschlitzten Endbereich anliegt, wenigstens teilweise konkav ausgebildet sein. Of course, the cylinder-piston device may comprise a piston with a corresponding piston head. The at least one sleeve can be designed to determine the inner tube and / or the outer tube on the piston rod bearing and / or on the cylinder head, in particular in a force-locking and / or form-fitting manner. In the coupling region defined here, alternatively or additionally, means for a cohesive bond of said components can be provided. The coupling can therefore be chosen almost arbitrarily and also combined. The at least one cuff may, according to a preferred but not to be envisaged embodiment, at least one slotted end portion of the inner tube and / or the outer tube to the cylinder head and / or to determine the piston rod bearing. The cuff may be at least partially concave in the region in which it rests against the slotted end region.
Die Begriffe des Zylinderkopfs, des Kolbenstangenlagers und der Endbereiche sind weit auszulegen und können sich auf Merkmale beziehen, die hinsichtlich ihrer Funktion den beschriebenen Merkmalen ähneln. Der Zylinderkopf und/oder das Kolbenstangenlager können demnach Komponenten bezeichnen, die eine Zylinder- Kolben-Vorrichtung in axialer Richtung nach außen begrenzen oder abschließen. Mit den geschlitzten Endbereichen können axial äußere Bereiche der Rohre gemeint sein, die keine planare Außenfläche aufweisen, sondern beispielsweise regelmäßig oder unregelmäßig angeordnete Ausnehmungen umfassen. The terms of the cylinder head, the piston rod bearing and the end portions are to be interpreted broadly and may refer to features that are similar in function to the features described. The cylinder head and / or the piston rod bearing can therefore designate components which limit or close a cylinder-piston device in the axial outward direction. The slotted end regions may mean axially outer regions of the tubes which do not have a planar outer surface but comprise, for example, regularly or irregularly arranged recesses.
Durch den erfindungsgemäß ausgebildeten Kopplungsmechanismus zwischen den Rohren und dem Zylinderkopf bzw. dem Kolbenstangenlager wird die Verwendung besonders einfach herzustellender Rohrrohlinge zur Fertigung des Innenrohrs und/oder des Außenrohr ermöglicht. Dies wiederum bedingt eine besonders flexible Herstellung erfindungsgemäßer Zylinder-Kolben-Vorrichtungen mit unterschiedli- chen Dimensionen aus einem variablen Baukasten der hierfür erforderlichen Komponenten. The inventively designed coupling mechanism between the tubes and the cylinder head or the piston rod bearing allows the use of particularly easy to manufacture tube blanks for manufacturing the inner tube and / or the outer tube. This in turn requires a particularly flexible production of cylinder-piston devices according to the invention with different Chen dimensions of a variable modular system of the necessary components.
Durch die einfachere Ausgestaltung der Zylinder-Kolben-Vorrichtung ist auch eine Endlosfertigung der zur Montage der Zylinder-Kolben-Vorrichtung notwendigen Halbzeuge möglich. Due to the simpler design of the cylinder-piston device and a continuous production of the necessary for mounting the cylinder-piston device semi-finished products is possible.
In einer bevorzugten Ausführung ist denkbar, dass das Innenrohr und/oder das Außenrohr und/oder die Manschette aus einem Faserverbund kunststoff und/oder aus einem Metall gefertigt sind. Denkbar ist demnach auch, dass wenigstens ein Teil der genannten Komponenten aus einem Faserverbundkunststoff gefertigt ist, während ein anderer Teil der genannten Komponenten aus einem Metall gefertigt ist. Denkbar sind ferner kombinierte Komponenten, bei denen sowohl ein Metall oder mehrere Metalle als auch Faserverbundkunststoffe bzw. ein Faserverbundkunst- stoff eingesetzt werden. Die Verwendung eines Faserverbundkunststoffs bzw. von Faserverbundkunststoffen macht die Herstellung vorteilhaft leichter Zylinder- Kolben-Vorrichtungen möglich. In a preferred embodiment, it is conceivable that the inner tube and / or the outer tube and / or the sleeve made of a fiber composite plastic and / or are made of a metal. It is therefore also conceivable that at least a part of said components is made of a fiber composite plastic, while another part of said components is made of a metal. Also conceivable are combined components in which both one metal or several metals as well as fiber composite plastics or a fiber composite plastic are used. The use of a fiber composite plastic or of fiber composite plastics makes the production advantageously easier cylinder piston devices possible.
In einer weiteren bevorzugten Ausführung ist denkbar, dass das Innenrohr und/oder das Außenrohr durch den Zylinderkopf und/oder das Kolbenstangenlager wenigstens teilweise verschlossen sind. Insbesondere ist damit ein Abschließen des jeweiligen Zylinderrohrs oder der Zylinderrohre an dessen bzw. deren kreisförmigen Decken- bzw. Bodenseiten gemeint. Durch die genannten Komponenten können somit die axial äußeren Bereiche des Innenrohrs und/oder des Außenrohrs wenigstens teilweise mit einer insbesondere wenigstens teilweise kreis- bzw. ringförmigen Fläche verschlossen sein. Der Begriff des Zylinderrohrs kann sich auf eines der beiden Rohre Innenrohr oder Außenrohr beziehen oder auch beide Rohre umfassen. In a further preferred embodiment, it is conceivable that the inner tube and / or the outer tube are at least partially closed by the cylinder head and / or the piston rod bearing. In particular, this means a conclusion of the respective cylinder tube or the cylinder tubes at its or their circular ceiling or bottom sides. By means of said components, the axially outer regions of the inner tube and / or of the outer tube can thus be closed at least partially with a particularly at least partially circular or annular surface. The term of the cylinder tube may refer to one of the two tubes inner tube or outer tube or include both tubes.
In einer weiteren bevorzugten Ausführung ist denkbar, dass die Manschette von insbesondere radial außen an Zungen des Innenrohrs und/oder des Außenrohrs angeordnet, insbesondere aufgepresst ist. Mit den Zungen der genannten Rohre können Ausbildungen bzw. Abschnitte in den axialen Endbereichen der Rohre ge- meint sein, die durch die geschlitzte Ausführung der Endbereiche als zungenförmi- ge, laschenförmige oder ähnliche Abschnitte der Rohre ausgebildet sind und sich insbesondere in axialer Richtung nach außen weg vom restlichen Gefüge der Rohre oder des Rohres erstrecken. Die Manschette kann hierbei wenigstens teilweise in radialer Richtung weiter außen angeordnet sein, als die Zungen. Ein radial innerer Abschnitt der Manschette kann mit einem radial äußeren Abschnitt der Zungen in direktem oder indirektem Kontakt sein. Unter einem indirekten Kontakt ist insbesondere ein Kontakt der jeweiligen Abschnitte gemeint, bei dem zusätzlich ein Klebstoff zwischen den Zungen und der Manschette vorgesehen ist. In a further preferred embodiment, it is conceivable for the sleeve to be arranged, in particular pressed, onto tongues of the inner tube and / or the outer tube, in particular radially outwards. Formations or sections in the axial end regions of the tubes can be formed with the tongues of the tubes mentioned. be thought, which are formed by the slotted design of the end portions as tongue-shaped, lug-shaped or similar portions of the tubes and extend in particular in the axial direction outwardly away from the remaining structure of the tubes or of the tube. The sleeve can be arranged at least partially in the radial direction further out than the tongues. A radially inner portion of the collar may be in direct or indirect contact with a radially outer portion of the tongues. By indirect contact is meant in particular a contact of the respective sections, in which an additional adhesive is provided between the tongues and the sleeve.
Die Zungen können dabei von den Manschetten besonders einfach gegen andere Komponenten der Zylinder-Kolben-Vorrichtung gedrückt bzw. verbogen werden und hierdurch kann die Kopplung der genannten Komponenten besonders einfach bewirkt werden. The tongues can be particularly easily pressed or bent by the cuffs against other components of the cylinder-piston device and thereby the coupling of said components can be particularly easily effected.
In einer besonders bevorzugten Ausführung ist denkbar, dass im Bereich der Zungen Klebstoff vorgesehen ist. Der Klebstoff kann die Kopplung zwischen den genannten Komponenten verbessern und ferner eine Dichtwirkung zum Abdichten der Zylinder-Kolben-Vorrichtung in dem jeweiligen Bereich ausüben. In a particularly preferred embodiment, it is conceivable that adhesive is provided in the region of the tongues. The adhesive can improve the coupling between said components and also exert a sealing effect for sealing the cylinder-piston device in the respective area.
In einer weiteren bevorzugten Ausführung ist denkbar, dass zwischen dem Innenrohr und dem Außenrohr ein druckstabiler Füllstoff, insbesondere aus Kunststoff, Holz und/oder Metall, vorgesehen ist. Durch den druckstabilen Füllstoff kann eine bessere Kraftübertragung zwischen dem Innenrohr und dem Außenrohr ermöglicht werden und so die Druckbelastung beispielsweise des Innenrohrs verringert werden. Auch kann mittels des Füllstoffs die Stabilität der Zylinder-Kolben-Vorrichtung in Bezug auf andere Belastungen als die Druckbelastung verbessert werden. Insbesondere die Stabilität der Zylinder-Kolben-Vorrichtung hinsichtlich Knick- und/oder Biegebelastungen kann so vergrößert werden. In a further preferred embodiment, it is conceivable that a pressure-stable filler, in particular made of plastic, wood and / or metal, is provided between the inner tube and the outer tube. By the pressure-stable filler a better power transmission between the inner tube and the outer tube can be made possible and so the pressure load, for example, of the inner tube can be reduced. Also, by means of the filler, the stability of the cylinder-piston device with respect to other loads than the pressure load can be improved. In particular, the stability of the cylinder-piston device with respect to buckling and / or bending loads can be increased.
In einer weiteren bevorzugten Ausführung ist ferner denkbar, dass das Innenrohr wenigstens teilweise innerhalb des Außenrohrs und/oder konzentrisch zu diesem gelagert ist. In einer weiteren bevorzugten Ausführung kann vorgesehen sein, dass das Innenrohr kürzer als das Außenrohr ist. Der Längenunterschied zwischen den Rohren kann im Wesentlichen der axialen Erstreckung von zwei Manschetten entsprechen. Hierbei ist ein Längenunterschied denkbar, der beispielsweise mehr als 50% der summierten axialen Erstreckung der beiden Manschetten und insbesondere mehr als 80% der summierten axialen Erstreckung der beiden Manschetten entspricht. In a further preferred embodiment, it is also conceivable that the inner tube is at least partially within the outer tube and / or concentric with it is stored. In a further preferred embodiment it can be provided that the inner tube is shorter than the outer tube. The difference in length between the tubes may correspond substantially to the axial extent of two sleeves. In this case, a length difference is conceivable which corresponds for example to more than 50% of the summed axial extent of the two sleeves and in particular more than 80% of the summed axial extent of the two sleeves.
In einer weiteren bevorzugten Ausführung ist denkbar, dass das Innenrohr und/oder das Außenrohr zwei geschlitzte Endbereiche umfassen, die einander gegenüberliegen. Die beiden geschlitzten Endbereiche können dabei jeweils an axial einander gegenüberliegenden Seiten des jeweiligen Rohrs vorgesehen sein. In a further preferred embodiment, it is conceivable for the inner tube and / or the outer tube to comprise two slotted end regions which lie opposite one another. The two slotted end portions can be provided in each case on axially opposite sides of the respective tube.
Die Erfindung ist ferner auf einen Druckspeicher oder einen Aktuator mit wenigstens einer Zylinder-Kolben-Vorrichtung nach einem der Ansprüche 1 bis 9 gerichtet. The invention is further directed to a pressure accumulator or an actuator with at least one cylinder-piston device according to one of claims 1 to 9.
Weitere Einzelheiten und Vorteile sind anhand der in den Figuren beispielhaft gezeigten Ausführung erläutert. Dabei zeigen: Further details and advantages are explained with reference to the embodiment shown by way of example in the figures. Showing:
Figur 1 : eine Außenansicht einer erfindungsgemäßen Zylinder-Kolben- Vorrichtung; Figure 1: an external view of a cylinder-piston device according to the invention;
Figur 2: eine Längsschnittansicht einer erfindungsgemäßen Zylinder-Kolben- Vorrichtung; und Figure 2 is a longitudinal sectional view of a cylinder-piston device according to the invention; and
Figur  figure
3a und 3b: Detailansichten zur Kopplung der einzelnen Komponenten der erfindungsgemäßen Zylinder-Kolben-Vorrichtung.  3a and 3b: detailed views for coupling the individual components of the cylinder-piston device according to the invention.
Figur 1 zeigt eine Außenansicht einer erfindungsgemäßen Zylinder-Kolben- Vorrichtung, wobei außenliegend ein Außenrohr 7 des Zylinders der Zylinder- Kolben-Vorrichtung gezeigt ist, an dessen beiden axialen Endbereichen jeweils eine Manschette 5 zur Kopplung wenigstens eines Teils der Komponenten der Zylin- der-Kolben-Vorrichtung vorgesehen ist. Im unteren Bereich der Figur 1 ist ein Endbereich eines wenigstens zum Teil innerhalb des Zylinders 7 gelagerten Kolbens 1 gezeigt, der ein Auge bzw. eine Durchführung zum Koppeln der Zylinder-Kolben- Vorrichtung mit weiteren Einrichtungen umfassen kann. Am gegenüberliegenden Abschnitt der Zylinder-Kolben-Vorrichtung ist ein zweites Auge bzw. eine zweite Durchführung gezeigt, die einem teilweise sichtbaren Zylinderkopf 4 zugeordnet sein kann, der wenigstens teilweise von der oberen Manschette 5 aufgenommen bzw. umfasst sein kann. 1 shows an external view of a cylinder-piston device according to the invention, wherein an outer tube 7 of the cylinder of the cylinder-piston device is shown externally, at the two axial end regions of which there is respectively a sleeve 5 for coupling at least part of the components of the cylinder. the piston device is provided. In the lower part of FIG. 1, an end region of a piston 1 mounted at least partly within the cylinder 7 is shown, which can comprise an eye or a bushing for coupling the cylinder-piston device with other devices. At the opposite portion of the cylinder-piston device, a second eye or a second passage is shown, which may be associated with a partially visible cylinder head 4, which may be at least partially received by the upper sleeve 5 or included.
Figur 2 zeigt eine Längsschnittansicht einer erfindungsgemäßen Zylinder-Kolben- Vorrichtung, bei der ein Kolben 1 verschieblich innerhalb des komplexen Zylinders der Zylinder-Kolben-Vorrichtung gelagert ist. Der Zylinder umfasst hierbei ein Innenrohr 6 und ein das Innenrohr 6 umgebendes Außenrohr 7, die koaxial zueinander angeordnet sein können. Der Kolben 1 weist einen Kolbenkopf 2 auf, der verschieblich innerhalb des Innerohrs 6 gelagert ist. Eine Dichtung 10 kann den Dichtspalt zwischen dem Kolbenkopf 2 und dem Innenrohr 6 abdichten. Figure 2 shows a longitudinal sectional view of a cylinder-piston device according to the invention, in which a piston 1 is slidably mounted within the complex cylinder of the cylinder-piston device. The cylinder in this case comprises an inner tube 6 and an inner tube 6 surrounding the outer tube 7, which may be arranged coaxially with each other. The piston 1 has a piston head 2, which is mounted displaceably within the inner ear 6. A seal 10 can seal the sealing gap between the piston head 2 and the inner tube 6.
Ein Zylinderkopf 4 kann dazu ausgebildet sein, mit beiden Rohren 6, 7 gekoppelt zu werden. Hierzu kann in einem axial mittigen Bereich des Zylinderkopfs 4 eine insbesondere zylinderförmige Erhöhung 41 vorgesehen sein, in deren Mantelfläche bzw. in deren Mantelflächenbereich eine Dichtung 1 1 vorgesehen sein kann. Die Dichtung 1 1 kann dazu ausgebildet sein, den Dichtspalt zwischen der Erhöhung 41 und dem Innenrohr 6 abzudichten. Der Zylinderkopf 4 kann ferner an einer radialen Außenseite und insbesondere an einer radial am weitesten angeordneten Fläche einen radial nach innen gekrümmten Abschnitt umfassen, an dem eines der Rohre 6, 7 mit seinem geschlitzten Endbereich 71 anliegen kann. In diesem gekrümmten Bereich des Zylinderkopfs 4 kann der geschlitzte Endbereich 71 des entsprechenden Rohres 6,7 durch die Manschette 5 gegen den Zylinderkopf 4 angepresst werden, wobei die geschlitzten Endbereiche 71 bzw. der geschlitzte Endbereich 71 radial nach innen gekrümmt sein kann. An der dem Zylinderkopf 4 entgegengesetzten Seite der Zylinder-Kolben- Vorrichtung ist ein Kolbenstangenlager 3 vorgesehen, in dem die Kolbenstange 1 verschieblich gelagert ist. Der Dichtspalt zwischen der Kolbenstange 1 und dem Lager 3 kann über wenigstens eine Dichtung 8 abgedichtet sein. Denkbar ist auch eine Ausführung mit drei entsprechenden Dichtungen 8. A cylinder head 4 may be adapted to be coupled to both pipes 6, 7. For this purpose, an in particular cylindrical elevation 41 may be provided in an axially central region of the cylinder head 4, in whose lateral surface or in the lateral surface region of a seal 1 1 may be provided. The seal 1 1 may be adapted to seal the sealing gap between the elevation 41 and the inner tube 6. The cylinder head 4 may further comprise on a radially outer side and in particular on a radially furthest surface a radially inwardly curved portion, on which one of the tubes 6, 7 can abut with its slotted end portion 71. In this curved region of the cylinder head 4, the slotted end region 71 of the corresponding tube 6, 7 can be pressed against the cylinder head 4 by the sleeve 5, wherein the slotted end regions 71 or the slotted end region 71 can be curved radially inwards. On the cylinder head 4 opposite side of the cylinder-piston device, a piston rod bearing 3 is provided, in which the piston rod 1 is slidably mounted. The sealing gap between the piston rod 1 and the bearing 3 can be sealed by at least one seal 8. It is also conceivable embodiment with three corresponding seals. 8
Ähnlich wie im Bereich des Zylinderkopfs 4 kann wenigstens eines der Rohre 6, 7 durch eine weitere Manschette 5 an das Kolbenstangenlager 3 angepresst sein. Die entsprechenden Ausführungen zum Zylinderkopf 4 gelten hierbei analog für das Kolbenstangenlager 3. Similar to the area of the cylinder head 4, at least one of the tubes 6, 7 can be pressed against the piston rod bearing 3 by a further sleeve 5. The corresponding explanations for the cylinder head 4 apply analogously to the piston rod bearing 3.
Wie im Fall des Zylinderkopfs 4 kann auch zwischen dem Kolbenstangenlager 3 und dem Innenrohr 6 eine Dichtung 9 zum Abdichten des entsprechenden Dichtspalts vorgesehen sein. Die Manschette 5 kann kraftschlüssig und/oder formschlüssig mit wenigstens einem der Rohre 6, 7 verbunden sein. Hierzu ist es denkbar, die Manschette 5 an die jeweiligen Komponenten aufzupressen, mit dem Stangenlager 3 und/oder mit dem Zylinderkopf 4 zu verschrauben und/oder anderweitig zu koppeln. As in the case of the cylinder head 4, a seal 9 for sealing the corresponding sealing gap can also be provided between the piston rod bearing 3 and the inner tube 6. The sleeve 5 may be non-positively and / or positively connected to at least one of the tubes 6, 7. For this purpose, it is conceivable to press the sleeve 5 to the respective components, to screw with the rod bearing 3 and / or with the cylinder head 4 and / or otherwise to couple.
Figuren 3a und 3b zeigen den entsprechenden Kopplungsbereich der Manschette 5 in einer seitlichen bzw. einer perspektivischen Explosionsansicht. Die geschlitzten Endbereiche 71 des Rohres 6, 7 können hierbei in axialer Richtung geschlitzt sein, wobei insbesondere identische Zungen aus den Rohren 6, 7 herausgearbeitet sein können. Die Zungen können einstückig mit dem restlichen Gefüge des Rohrs bzw. der Rohre 6, 7 gefertigt sein. Denkbar ist hierbei auch, dass beide Rohre 6,7 jeweils von eigenen Manschette 5 auf beispielsweise das Kolbenstangenlager 3 und/oder den Zylinderkopf 4 aufgepresst werden, wobei die beiden Manschetten 5 wenigstens teilweise ineinander gelagert sein können und beispielsweise Durchführungen oder wenigstens eine Durchführung umfassen können, durch welche das innen gelagerte Kolbenstangenlager 3 oder der innen gelagerte Zylinderkopf 4 durch die Manschetten 5 nach außen durchgeführt werden können. Die Manschetten 5 können hierbei entsprechend mit unterschiedlichen Durchmessern gefertigt sein. Das Innenrohr 6 und/oder das Außenrohr 7 können aus einem Faserverbundkunststoff gefertigt sein. Denkbar sind auch Ausführungen, bei denen eines der Rohre 6, 7 aus einem Material gefertigt ist, während das andere Rohr 6, 7 aus einem anderen Material gefertigt ist. Figures 3a and 3b show the corresponding coupling region of the sleeve 5 in a side or an exploded perspective view. The slotted end portions 71 of the tube 6, 7 can be slotted in the axial direction, in particular, identical tongues can be worked out of the tubes 6, 7. The tongues can be made in one piece with the rest of the structure of the tube or tubes 6, 7. It is also conceivable here that both tubes 6, 7 are each pressed by their own sleeve 5 onto, for example, the piston rod bearing 3 and / or the cylinder head 4, wherein the two sleeves 5 can be at least partly supported one inside the other and can comprise, for example, bushings or at least one bushing through which the internally mounted piston rod bearing 3 or the internally mounted cylinder head 4 can be performed by the cuffs 5 to the outside. The cuffs 5 can be made according to different diameters. The inner tube 6 and / or the outer tube 7 may be made of a fiber composite plastic. Also conceivable are embodiments in which one of the tubes 6, 7 is made of one material, while the other tube 6, 7 is made of a different material.
Das Innenrohr 6 und/oder das Außenrohr 7 können wenigstens teilweise in ihrem jeweiligen Deckenbereich bzw. Bodenbereich, d.h. ihren axial außen bestehenden Öffnungen oder Abschnitten mittels des Zylinderkopfs 4 und/oder mittels des Kolbenstangenlagers 3 verschlossen sein. Hierzu können an dem Zylinderkopf 4 und/oder an dem Kolbenstangenlager 3 insbesondere planare und weitere insbesondere zueinander parallel angeordnete Verschlussabschnitte vorgesehen sein. Diese können kreisförmig bzw. ringförmig ausgebildet sein und konzentrisch zueinander angeordnet sein. The inner tube 6 and / or the outer tube 7 may be at least partially in their respective ceiling area or floor area, i. their axially outer openings or sections by means of the cylinder head 4 and / or closed by means of the piston rod bearing 3. For this purpose, in particular planar and further, in particular parallel arranged closure portions may be provided on the cylinder head 4 and / or on the piston rod bearing 3. These may be circular or annular and may be arranged concentrically with each other.
Die Erfindung kann sich auf einen Hydraulikzylinder bzw. -aktuator und/oder auf einen Druckspeicher beziehen. Das dabei vorgesehen Zylinderrohr kann zweiteilig ausgeführt sein. Ein Innenrohr 6 kann wenigstens teilweise innerhalb eines Außenrohrs 7 gelagert sein. The invention may relate to a hydraulic cylinder or actuator and / or to a pressure accumulator. The case provided cylinder tube can be made in two parts. An inner tube 6 may be at least partially supported within an outer tube 7.
Die Rohre können aus Faserverbund kunststoff oder Metall gefertigt sein. Das Innenrohr 6 kann durch das Kolbenstangenlager 3 und den Zylinderkopf 4 wenigstens teilweise verschlossen sein. Über diesen inneren Aufbau kann das insbesondere zylindrische Außenrohr 7 geschoben bzw. positioniert sein. Das Außenrohr 7 und/oder das Innenrohr 6 können an ihren Enden geschlitzt sein. The tubes can be made of fiber composite plastic or metal. The inner tube 6 may be at least partially closed by the piston rod bearing 3 and the cylinder head 4. About this internal structure, the particular cylindrical outer tube 7 can be pushed or positioned. The outer tube 7 and / or the inner tube 6 may be slotted at their ends.
Die durch die Schlitze entstandenen Zungen sind mit einer Faserverbundmanschette 5, welche von außen aufgepresst ist, fest auf die abgerundeten Außenkonturen des Kolbenstangenlagers 3 und/oder des Zylinderkopfs 4 pressbar. The tongues formed by the slots can be pressed firmly onto the rounded outer contours of the piston rod bearing 3 and / or the cylinder head 4 with a fiber composite sleeve 5, which is pressed from the outside.
Eine zusätzliche Einbringung von Klebstoff an den Fügestellen ist dabei möglich. Der Klebstoff kann zur Festigkeitssteigerung des Verbunds und auch als Dichtung eingesetzt werden. Das Außenrohr 7 kann in diesem Verbund einen Zuganker darstellen. Es kann aber Druckkräfte mit aufnehmen. Das Innenrohr 6 nimmt die hydraulischen Druckkräfte auf und kann auch vorgespannt sein. Zwischen Innen- und Außenrohr 6, 7 kann noch ein druckstabiler Füllstoff aus Kunststoff, Holz oder Metall eingebracht werden um die Steifigkeit bzw. Beulsteifigkeit zu erhöhen. An additional introduction of adhesive at the joints is possible. The adhesive can increase the strength of the composite and also as a seal be used. The outer tube 7 may represent a tie rod in this composite. But it can absorb pressure forces. The inner tube 6 absorbs the hydraulic pressure forces and can also be biased. Between the inner and outer tubes 6, 7 can still be a pressure-resistant filler made of plastic, wood or metal are introduced to increase the stiffness or dent resistance.
Das insbesondere als eines Faserverbundrohrs ausgebildete Außenrohr 7 kann als Zuganker fungieren, welcher insbesondere mit aufgepressten Manschetten 5 über Rundungen der Endstücke eingezogen werden kann. Der Begriff der Endstücke kann sich vorliegend auf den Zylinderkopf 4 und/oder auf das Kolbenstangenlager 3 beziehen. The outer tube 7, which is designed in particular as a fiber composite tube, can function as a tie rod, which can be pulled in in particular with pressed-on sleeves 5 via curves of the end pieces. The term of the end pieces may refer in the present case to the cylinder head 4 and / or to the piston rod bearing 3.
Erfindungsgemäß kann eine kraft- und formschlüssige Verbindung zwischen wenigstens dem Außenrohr 7 und dem Zylinderkopf 4 und/oder dem Kolbenstangenlager 3 bestehen, welche es ermöglicht, die Zug- und Druck-Spannungen in die Endstücke einzuleiten. According to the invention, a non-positive and positive connection between at least the outer tube 7 and the cylinder head 4 and / or the piston rod bearing 3 consist, which makes it possible to initiate the tensile and compressive stresses in the tails.
Es wird ferner die Trennung der Kraftaufnahme bei der Verwendung an einem Hydraulikzylinder in Knick-/ Biegekräfte und Druckkräfte aus Fluiddruck bewirkt. It also causes the separation of the power consumption when used on a hydraulic cylinder in buckling / bending forces and pressure forces from fluid pressure.
Vorteilhafterweise kann ferner ein variabler Baukasten zu Fertigung der Zylinder- Kolben-Vorrichtung bereitgestellt werden, bei dem die Verwendung einfach herzustellender Rohrrohlinge möglich ist. Auch kann wenigstens ein Teil der Komponenten bzw. der Halbzeuge in kostengünstiger und flexibler Endlosfertigung hergestellt werden. Insgesamt erhöht die erfindungsgemäße Geometrie das Flächenträgheitsmoment im Lastfall. Advantageously, a variable modular system for manufacturing the cylinder-piston device can further be provided, in which the use of easy-to-manufacture tube blanks is possible. Also, at least a part of the components or the semi-finished products can be produced in cost-effective and flexible continuous production. Overall, the geometry of the invention increases the area moment of inertia in the load case.

Claims

Patentansprüche claims
1 . Zylinder-Kolben-Vorrichtung mit wenigstens einem Innenrohr (6) und wenigstens einem Außenrohr (7), wobei das Innenrohr (6) wenigstens teilweise innerhalb des Außenrohrs (7) gelagert ist, mit wenigstens einem Zylinderkopf1 . Cylinder-piston device with at least one inner tube (6) and at least one outer tube (7), wherein the inner tube (6) is at least partially supported within the outer tube (7), with at least one cylinder head
(4) , mit wenigstens einem Kolbenstangenlager (3) und wenigstens einer Manschette (5), dadurch gekennzeichnet, dass die Manschette (5) wenigstens einen vorzugsweise geschlitzten Endbereich (71 ) des Innenrohrs (6) und/oder des Außenrohrs (7) an dem Zylinderkopf (4) und/oder an dem Kolbenstangenlager (3) feststellt. (4), with at least one piston rod bearing (3) and at least one sleeve (5), characterized in that the sleeve (5) at least one preferably slotted end portion (71) of the inner tube (6) and / or the outer tube (7) the cylinder head (4) and / or on the piston rod bearing (3) notes.
2. Zylinder-Kolben-Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass das Innenrohr (6) und/oder das Außenrohr (7) und/oder die Manschette2. Cylinder-piston device according to claim 1, characterized in that the inner tube (6) and / or the outer tube (7) and / or the sleeve
(5) aus einem Faserverbundkunststoff und/oder aus einem Metall gefertigt sind. (5) are made of a fiber composite plastic and / or made of a metal.
3. Zylinder-Kolben-Vornchtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Innenrohr (6) und/oder das Außenrohr (7) durch den Zylinderkopf (4) und/oder durch das Kolbenstangenlager (3) wenigstens teilweise verschlossen ist. 3. Zylinder-Kolben-Vornchtung according to claim 1 or 2, characterized in that the inner tube (6) and / or the outer tube (7) through the cylinder head (4) and / or by the piston rod bearing (3) is at least partially closed.
4. Zylinder-Kolben-Vorrichtung nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, dass die Manschette (5) von außen an Zungen des Innenrohrs (6) und/oder des Außenrohrs (7) angeordnet, insbesondere aufgepresst ist. 4. Cylinder-piston device according to claim 1, 2 or 3, characterized in that the sleeve (5) from the outside to tongues of the inner tube (6) and / or the outer tube (7) arranged, in particular is pressed.
5. Zylinder-Kolben-Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass im Bereich der Zungen Klebstoff vorgesehen ist. 5. Cylinder-piston device according to claim 4, characterized in that in the region of the tongues adhesive is provided.
6. Zylinder-Kolben-Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem Innenrohr (6) und dem Außenrohr (7) ein druckstabiler Füllstoff .insbesondere aus Kunststoff, Holz und/oder Metall, vorgesehen ist. 6. Cylinder-piston device according to one of the preceding claims, characterized in that between the inner tube (6) and the outer tube (7) a pressure-stable filler .insbesondere of plastic, wood and / or metal, is provided.
7. Zylinder-Kolben-Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Innenrohr (6) wenigstens teilweise innerhalb des Außenrohrs (7) und/oder konzentrisch zu diesem gelagert ist. 7. Cylinder-piston device according to one of the preceding claims, characterized in that the inner tube (6) is at least partially supported within the outer tube (7) and / or concentric thereto.
8. Zylinder-Kolben-Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Innenrohr (6) kürzer als das Außenrohr (7) ist. 8. Cylinder-piston device according to one of the preceding claims, characterized in that the inner tube (6) is shorter than the outer tube (7).
9. Zylinder-Kolben-Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Innenrohr (6) und/oder das Außenrohr (7) zwei geschlitzte Endbereiche (71 ) umfassen, die einander gegenüberliegen. 9. Cylinder-piston device according to one of the preceding claims, characterized in that the inner tube (6) and / or the outer tube (7) comprises two slotted end portions (71) which are opposite to each other.
10. Druckspeicher oder Aktuator mit wenigstens einer Zylinder-Kolben- Vorrichtung nach einem der Ansprüche 1 bis 9. 10. pressure accumulator or actuator with at least one cylinder-piston device according to one of claims 1 to 9.
EP18704936.6A 2017-02-07 2018-02-05 Device having a piston, a cylinder and at least one inner tube and at least one outer tube Active EP3580463B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017001133.8A DE102017001133A1 (en) 2017-02-07 2017-02-07 Cylinder-piston device with at least one inner tube and at least one outer tube
PCT/EP2018/052830 WO2018146053A1 (en) 2017-02-07 2018-02-05 Cylinder-piston device having at least one inner tube and at least one outer tube

Publications (2)

Publication Number Publication Date
EP3580463A1 true EP3580463A1 (en) 2019-12-18
EP3580463B1 EP3580463B1 (en) 2022-08-24

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Application Number Title Priority Date Filing Date
EP18704936.6A Active EP3580463B1 (en) 2017-02-07 2018-02-05 Device having a piston, a cylinder and at least one inner tube and at least one outer tube

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EP (1) EP3580463B1 (en)
DE (1) DE102017001133A1 (en)
WO (1) WO2018146053A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019131319A1 (en) * 2019-11-20 2021-05-20 Thyssenkrupp Ag Vibration damper and motor vehicle with such a vibration damper

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB874999A (en) 1958-02-20 1961-08-16 Bwg Bergwerk U Walzwerk Maschb Hydraulic telescopic pit props
GB1551223A (en) 1975-05-01 1979-08-30 High Temperature Eng Ltd Tubular members
ES2121493B1 (en) 1993-11-02 1999-06-01 Fichtel & Sachs Ag PISTON AND CYLINDER ASSEMBLY AND PROCEDURE AND DEVICE FOR CLOSING A PISTON AND CYLINDER ASSEMBLY.
DE19513469C1 (en) 1995-04-08 1996-04-11 Fichtel & Sachs Ag Securing component with ring surface
US8757423B2 (en) * 2010-07-02 2014-06-24 GM Global Technology Operations LLC Composite pressure vessel and method of assembling the same
DE102013100591A1 (en) * 2013-01-21 2014-07-24 Technische Universität Darmstadt Pressure vessel and method for producing a pressure vessel
AT514081B1 (en) * 2013-03-28 2014-10-15 Mark Hydraulik Gmbh Cylinder housing in lightweight composite construction and method for producing the same
DE102015213308B4 (en) 2015-07-15 2019-03-14 Thyssenkrupp Ag Vibration damper with carbon fiber damper tube with threaded adapter for motor vehicle

Also Published As

Publication number Publication date
EP3580463B1 (en) 2022-08-24
WO2018146053A1 (en) 2018-08-16
DE102017001133A1 (en) 2018-08-09

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