EP2930374B1 - Storage devices and mounting method for manufacturing such storage devices - Google Patents

Storage devices and mounting method for manufacturing such storage devices Download PDF

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Publication number
EP2930374B1
EP2930374B1 EP15000660.9A EP15000660A EP2930374B1 EP 2930374 B1 EP2930374 B1 EP 2930374B1 EP 15000660 A EP15000660 A EP 15000660A EP 2930374 B1 EP2930374 B1 EP 2930374B1
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EP
European Patent Office
Prior art keywords
separator
housing
holding device
fixing point
housing parts
Prior art date
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Active
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EP15000660.9A
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German (de)
French (fr)
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EP2930374A1 (en
Inventor
Herbert Baltes
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Hydac Technology GmbH
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Hydac Technology GmbH
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Publication of EP2930374A1 publication Critical patent/EP2930374A1/en
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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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/106—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means characterised by the way housing components are assembled
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
    • F15B1/14—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery by means of a rigid annular supporting member
    • 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
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • 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
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3156—Accumulator separating means having flexible separating means characterised by their attachment
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/60—Assembling or methods for making accumulators
    • F15B2201/605—Assembling or methods for making housings therefor

Definitions

  • the invention relates to storage devices, in particular in the form of hydraulic accumulators, with the features in the preamble of claim 1.
  • the invention further relates to an assembly method for producing such storage devices.
  • Hydraulic accumulators are used, among other things, in hydraulic systems to take up certain volumes of pressurized fluids and to return these to the system as required.
  • Particularly common are hydraulic systems with hydropneumatic storage with a separator designed as a membrane.
  • the membrane separates a liquid space as a working space from a gas space as a further working space.
  • the membrane takes over the decoupling of gas and liquid space. Nitrogen is preferably used as the working gas.
  • the liquid space communicates with a hydraulic circuit of the system, so that when the pressure in the hydraulic circuit increases, the hydraulic accumulator receives pressure medium and the gas is compressed. With decreasing pressure, the previously compressed gas expands again, displacing the liquid back into the hydraulic circuit.
  • a solution for fixing a separator in a storage enclosure goes from the DE 10 2009 021 463 A1 out.
  • the separator is cup-shaped and has at its outer edge on a torus.
  • the annular bead is held between housing parts in respective groove-shaped recesses.
  • the preparation of such a separator with a torus requires additional steps. Since such storage devices are devices that are manufactured in large quantities, the aspects of manufacturability and production costs must be considered in the design. Therefore, the aim is to further simplify the production and in particular to dispense with an annular bead on the separator.
  • Another solution for the production of a memory device is from the DE 103 55 435 B3 out.
  • the separator is also designed shell-shaped and also has a constant wall thickness in the region of an upper end edge.
  • this hydraulic accumulator engages the upper end edge of the separator in a bead-shaped, the edge of the separator annularly enclosing connecting part.
  • the connecting part is in turn fixed by a clamping ring in the housing.
  • the DE 10 2007 003 724 A1 describes a storage device, in particular in the form of a hydraulic accumulator, comprising a storage housing at least two housing parts which at least partially delimit a working space in the storage housing in which a separating device movably guided two media spaces separated from each other and held stationary by means of a holding device in the storage enclosure at a predetermined fixing point, wherein the holding means by means of a separate, different from the housing parts Anpressteils at least the separating device partly in the region of the fixing point with a defined contact force on at least one of the housing parts in a touching manner, wherein the adjacently arranged housing parts overlap each other with their respective free opening areas and wherein the holding device is received in this overlap region, wherein the holding device in a groove-like groove of a housing part is at least partially received and in a pre-assembly with a predetermined projection in spring elastic compliant manner with the separator at the fixing point is in communication and wherein in the assembled position, the supernatant reset the contact pressure
  • the invention is therefore based on the cited prior art, the task of demonstrating improved memory devices, which do not have the disadvantages of the prior art and in particular faster and cheaper to produce. Furthermore, a method for producing such memory devices is to be shown.
  • the separating device is accommodated in the region of its free opening edge in a groove-like depression of one of the housing parts, the recording length is shorter than the other recording length of the groove in the other housing part, which otherwise congruent adjacent to each other in the adjacent housing parts are arranged in the overlapping region.
  • the holding device applies the separator in a constant or substantially constant wall thickness in the region of the fixing point with a defined contact pressure on at least one of the housing parts in a touching manner.
  • the solution according to the invention has the advantage that the holding device and the separating device can be manufactured separately and arranged on the respective housing parts and installed together only during assembly.
  • the holding device permanently secures the separating device in a sealing manner in the storage device.
  • the term "in a touching manner" in this context means that the separating device rests directly or directly on the respective housing part, without further parts or elements being provided between the separating device and the housing part. Consequently, the storage device is simpler and faster overall and therefore less expensive to produce.
  • a further solution of the problem is according to the characterizing part of claim 2 is that the holding means by means of a separate, different from the housing parts Anpressteils the separator at least partially in the region of the fixing point with a defined contact force against at least one of the housing parts in a touching manner.
  • This solution has the advantage that the separator is held non-positively or clampingly on a housing part. Again, there is no need for further measures to ensure the necessary strength of the connection and the tightness. Another advantage of this solution is that the assembly is also easy and time-saving possible.
  • the adjacently arranged housing parts preferably overlap one another with their respective free opening areas and the holding device is accommodated in this overlapping area. Due to the overlapping arrangement, the holding device can act between the housing parts, wherein the compression of the housing parts can be advantageously used to generate the necessary holding force for the separator or the necessary contact pressure for the pressing.
  • the holding device is provided in a region of the maximum wall thickness of the storage device, so that sufficient space is available to arrange the holding device in this area in recesses of the housing parts.
  • the projecting in the mounting position supernatant can advantageously result in a flush termination between the holding device and at least one of the housing parts, so that insofar a kind of self-centering of the parts to be joined is created.
  • the holding device holds the separator at the fixing point in the storage housing preferably free of adhesive. This requires no additional Adhesive are provided and the time required for the application of the adhesive can be omitted.
  • the larger dimensioned receiving length of the throat advantageously creates in the same a compensation space into which the holding device, in particular in the assembled state of the storage housing, can escape. In this way, an unnecessary crushing or shearing stress of the holding device is avoided and it follows through the axial extension of the holding device, an enlarged mounting and sealing area for the separator. Thus, the separator is set very safe and good sealing in the storage enclosure.
  • the independent Anpressteil the holding device is annular and preferably has at least at the point of the outlet of the wall of the separator from the groove-like depression of a housing part a cross-sectional change in such a way that the wall of the separator formed of elastically resilient material, the recess without significant change in wall thickness leaves.
  • the separating device may be formed in the manner of a shell made of elastically yielding material which, during operation of the storage device, enters at least one lifted state of movement releasing a media inlet of the storage housing, in which the separating device transversely to the fixing point takes a course in which it is supported against a plant foot in one of the housing parts, which limits the throat, under relief of the fixing point. If the separating device is displaced sufficiently far into the storage housing, the separating device automatically comes to rest against the plant foot. This entails that movement forces of the separation membrane can be introduced into the plant foot, which then no longer have to be introduced at the fixing point between the holding device and the opposite housing part. In this respect, there is a discharge, which contributes to the life of the separator is significantly extended compared to known comparative solutions.
  • the mounting method for producing a memory device is characterized in that a free end region of a separating device is inserted into a shell-shaped housing part with a groove-like depression, that a pressing part of the holding device is inserted into a further shell-shaped housing part with a groove with a predeterminable, resiliently resilient projection, which is restored during the collapse of the housing part shells to form the storage enclosure of the housing wall of a housing part and thus exerts the required contact pressure on the separator to be determined at the fixing point in the storage housing with its restoring force in the final final assembly state.
  • the pertinent manufacturing or assembly process can be carried out reliably even with large quantities.
  • the single FIGURE shows a longitudinal section of a storage device 1 according to the invention, in particular in the form of a hydraulic accumulator, with a storage housing 3 consisting of two housing parts 5, 7, which delimit a working space 9 in the storage housing 3, in which a separation device 11 movably guided two media spaces 13, 15, namely in the form of a gas space 13 and a liquid space 15, separated from each other and held stationary by means of a holding device 17 in the storage enclosure 3 at a predetermined fixing point 19.
  • the housing parts 5, 7 are shell-shaped and rotationally symmetrical to a longitudinal axis LA.
  • the housing parts 5, 7 are preferably made of an aluminum alloy in one operation in the context of a conventional Pressumform compilers.
  • a media inlet 21 is integrally formed.
  • the media inlet 21 comprises a tubular connecting piece 23 which is provided with an external thread 25.
  • the upper housing part 7 has a connection body 27 with an opening 28, through which a working gas, in particular nitrogen, can be introduced into the storage housing 1 in the usual way.
  • the opening 28 is closed by a closure part 29, which is preferably welded to the other housing parts.
  • a cover 31 surrounding the closure part 31 is provided.
  • the cover 31 is positively fixed to the upper housing part 7, for example by means of a welded joint, and may have outer peripheral side surfaces, for example in the form of a hexagon for fixing the memory to third components of a hydraulic system, not shown, by means of a fixing tool, not shown, such as a fork wrench or the like.
  • a free opening edge 33 of the lower housing part 5 overlaps in an opening portion 35 with its inner side 37 an opening portion 39 of the upper housing part 7 along its outer periphery 41, which in the assembled state shown in about half of the height of the storage enclosure 1 is located.
  • the lower housing part 5 in this case has a reduced in its wall thickness longitudinal edge 43 which extends circumferentially along an associated bearing surface 45 of the upper housing part 7 under the same.
  • an axial stop for the upper housing part 7 is formed.
  • the upper housing part 7 is provided with an outwardly projecting shoulder 51, so that in the assembled state, the housing parts 5, 7 come into contact with each other at the respective stops 47, 51. Subsequently, the longitudinal edge 43 is crimped in a conventional manner to connect the housing parts 5, 7 permanently and tightly together.
  • the separator 11 is provided between the housing parts 5, 7, the separator 11 is provided.
  • the separating device 11 is at a constant or substantially constant wall thickness in the region of the fixing point 19 with a defined contact pressure on the lower housing part 5 in a touching manner, d. H. directly to.
  • the holding device 17 sets by means of a separate, different from the housing parts 5, 7 pressing part 53, the separator 11 in the region of the fixing point 19 with a defined contact pressure on the lower housing part 5 in a touching manner.
  • the holding device 17 which is substantially rectangular in cross-section, is received in the groove area 55 in a groove-like groove 55 and is connected in a pre-assembly position with a predeterminable projection in a spring-resilient manner to the separating device 11 at the fixing point 19.
  • the supernatant recovers the contact pressure on the separating device 11 in the region of the fixing point 19.
  • the supernatant recovered in the mounting position results in a flush closure of the holding device 17 with the upper housing part 7.
  • the holding device 17 holds the separating device 11 at the fixing point 19 in the storage enclosure 1 adhesive-free.
  • the separator 11 is added in the region of its free opening edge 59 in a groove-like recess 61 of the lower housing part 5, whose length LV is shorter than the length of the recording LK 55 of the throat in the upper housing part 7. It is in an embodiment not shown but also possible LK equal to LV. Otherwise, the groove 55 and the depression 61 are arranged congruently adjacent to one another in an overlapping region 54 of the adjacent housing parts 5, 7. The larger sized receiving length LK of the groove 55 creates in the same a compensation chamber 63, in which the holding device 17, in particular in the assembled state of the storage case 1, can escape.
  • the independent Anpressteil 53 of the holding device 17 is annular and has at least at the point of the outlet 65 of the wall 67 of the separator 11 from the groove-like recess 61 of the lower housing part 5, a cross-sectional change in such a way that the wall formed of elastically resilient material material 67 of the separator 11 can leave the recess 61 without significant change in wall thickness.
  • the change in cross section is formed by a shoulder 69 in Anpressteil 53, the edges are rounded.
  • the housing parts 5, 7 can be completely dispensed with the groove-like recess 61 so that the opening edge 59 of the separation membrane 11 can invest in a sealingly extending at the top just housing wall of the lower membrane shell 5 ,
  • the separator 11 is formed in the manner of a shell 71 made of elastically yielding material in the manner of a membrane.
  • the shell 71 passes during operation of the storage device 1 in at least one lifted, the media inlet 21 of the storage housing 1 releasing movement state in which transversely to the fixing point 19, the separator occupies a course in which they are against a rollerfuß 73 in the upper Housing part 7, which limits the throat 55, can support the relief of the fixing point 19.
  • a disc-shaped valve body 75 is provided, which is arranged on the outside of the separating device 11 or cast or knotted into the separating device 11 can be.
  • the memory device 1 according to the invention can be produced particularly easily and quickly.
  • the cup-shaped lower housing part 5 with a groove-like recess 61 of the free end portion 59 of the separator 11 is inserted.
  • a Anpressteil 53 of the holding device 17 is inserted with a predetermined, resilient elastic supernatant. The supernatant is reset when moving the housing part shells 5, 7 with the formation of the storage enclosure 1 of the housing wall 77 of the upper housing part 7 and exercises in such a way with its restoring force in the final final assembly state, the required contact pressure on the separator to be determined 11 at the fixing point 19 in the storage enclosure 1.
  • the solution according to the invention has the advantage that the holding device 17 and the separating device 11 can be manufactured separately and arranged on the respective housing parts 5, 7 and installed together only during assembly.
  • the holding device 17 is used to set the separator 11 in a sealing manner in the storage device 1. Characterized in that the separator 11 rests against one of the housing parts 5, 7, there is no necessary need for additional parts, to ensure the seal. Consequently, the storage device 1 is generally simpler and faster and thus cheaper to produce and due to the determination of the separator according to the invention long-lasting and reliable use.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Ink Jet (AREA)

Description

Die Erfindung betrifft Speichereinrichtungen, insbesondere in Form von Hydrospeichern, mit den Merkmalen im Oberbegriff von Anspruch 1. Die Erfindung betrifft ferner ein Montageverfahren zum Herstellen von solchen Speichereinrichtungen.The invention relates to storage devices, in particular in the form of hydraulic accumulators, with the features in the preamble of claim 1. The invention further relates to an assembly method for producing such storage devices.

Derartige Speichereinrichtungen sind in Form von Hydrospeichern auf dem Markt frei erhältlich. Hydrospeicher dienen in hydraulischen Anlagen unter anderem dazu, bestimmte Volumina unter Druck stehender Flüssigkeiten aufzunehmen und diese bei Bedarf wieder an die Anlage zurückzugeben. Besonders verbreitet sind hydraulische Anlagen mit hydropneumatischen Speichern mit einer als Membran ausgebildeten Trenneinrichtung. Die Membran trennt insbesondere einen Flüssigkeitsraum als Arbeitsraum von einem Gasraum als weiterem Arbeitsraum ab. Die Membran übernimmt dabei die Entkopplung von Gas- und Flüssigkeitsraum. Als Arbeitsgas kommt bevorzugt Stickstoff zu Anwendung. Der Flüssigkeitsraum steht mit einem Hydraulikkreislauf der Anlage in Verbindung, so dass bei einem Anstieg des Druckes im Hydraulikkreislauf der Hydrospeicher Druckmittel aufnimmt und das Gas dabei komprimiert wird. Bei sinkendem Druck dehnt sich das vorher verdichtete Gas wiederum aus und verdrängt dabei die Flüssigkeit zurück in den Hydraulikkreislauf.Such storage devices are freely available in the form of hydraulic accumulators on the market. Hydraulic accumulators are used, among other things, in hydraulic systems to take up certain volumes of pressurized fluids and to return these to the system as required. Particularly common are hydraulic systems with hydropneumatic storage with a separator designed as a membrane. In particular, the membrane separates a liquid space as a working space from a gas space as a further working space. The membrane takes over the decoupling of gas and liquid space. Nitrogen is preferably used as the working gas. The liquid space communicates with a hydraulic circuit of the system, so that when the pressure in the hydraulic circuit increases, the hydraulic accumulator receives pressure medium and the gas is compressed. With decreasing pressure, the previously compressed gas expands again, displacing the liquid back into the hydraulic circuit.

Ein besonderes Augenmerk bei der Konstruktion derartiger Speichereinrichtungen wird der Befestigung der Trenneinrichtung im Speichergehäuse gewidmet. Diese Befestigung muss den hohen Drücken in der Speichereinrichtung standhalten und die Arbeitsräume dauerhaft gasdicht voneinander trennen. Derweil treten starke dynamische Belastungen an der Trenneinrichtung auf, wenn diese im Speichergehäuse hin und her bewegt wird.Particular attention is paid to the attachment of the separator in the storage enclosure in the design of such storage devices. This attachment must withstand the high pressures in the storage device and permanently separate the working spaces from each other gas-tight. Meanwhile, strong dynamic loads on the separator occur when it is moved back and forth in the storage enclosure.

Eine Lösung zur Befestigung einer Trenneinrichtung in einem Speichergehäuse geht aus der DE 10 2009 021 463 A1 hervor. Hierbei ist die Trenneinrichtung schalenförmig ausgebildet und weist an ihrem äußeren Rand eine Ringwulst auf. Die Ringwulst ist zwischen Gehäuseteilen in jeweiligen nutförmigen Ausnehmungen gehalten. Die Herstellung einer solchen Trenneinrichtung mit einer Ringwulst erfordert zusätzliche Arbeitsschritte. Da es sich bei derartigen Speichereinrichtungen um Vorrichtungen handelt, die in hohen Stückzahlen gefertigt werden, sind die Aspekte der Herstellbarkeit und der Herstellungskosten bei der Konstruktion zu berücksichtigen. Daher wird angestrebt, die Herstellung noch weiter zu vereinfachen und insbesondere auf eine Ringwulst an der Trenneinrichtung zu verzichten.A solution for fixing a separator in a storage enclosure goes from the DE 10 2009 021 463 A1 out. Here, the separator is cup-shaped and has at its outer edge on a torus. The annular bead is held between housing parts in respective groove-shaped recesses. The preparation of such a separator with a torus requires additional steps. Since such storage devices are devices that are manufactured in large quantities, the aspects of manufacturability and production costs must be considered in the design. Therefore, the aim is to further simplify the production and in particular to dispense with an annular bead on the separator.

Eine weitere Lösung zur Herstellung einer Speichereinrichtung geht aus der DE 103 55 435 B3 hervor. Hier ist die Trenneinrichtung ebenfalls schalenförmig ausgeführt und weist auch im Bereich eines oberen Endrandes eine gleichbleibende Wandstärke auf. Bei diesem Hydrospeicher greift der obere Endrand der Trenneinrichtung in ein wulstförmiges, den Rand der Trenneinrichtung ringförmig umschließendes Verbindungsteil ein. Das Verbindungsteil ist wiederum durch einen Klemmring im Gehäuse festgelegt. Bei dieser Lösung gestaltet sich das Einschieben der Trenneinrichtung in das Verbindungsteil als relativ aufwendig. Auch hier besteht der Wunsch, die Herstellkosten und die Herstellzeit weiter zu reduzieren.Another solution for the production of a memory device is from the DE 103 55 435 B3 out. Here, the separator is also designed shell-shaped and also has a constant wall thickness in the region of an upper end edge. In this hydraulic accumulator engages the upper end edge of the separator in a bead-shaped, the edge of the separator annularly enclosing connecting part. The connecting part is in turn fixed by a clamping ring in the housing. In this solution, the insertion of the separating device in the connecting part designed as relatively expensive. Again, there is a desire to further reduce the manufacturing costs and the production time.

Die DE 10 2007 003 724 A1 beschreibt eine Speichereinrichtung, insbesondere in Form eines Hydrospeichers, mit einem Speichergehäuse bestehend aus mindestens zwei Gehäuseteilen, die zumindest teilweise einen Arbeitsraum im Speichergehäuse begrenzen, in dem eine Trenneinrichtung bewegbar geführt zwei Medienräume voneinander separiert und mittels einer Halteeinrichtung im Speichergehäuse an einer vorgebbaren Festlegestelle ortsfest gehalten ist, wobei die Halteeinrichtung mittels eines eigenständigen, von den Gehäuseteilen verschiedenen Anpressteils zumindest die Trenneinrichtung teilweise im Bereich der Festlegestelle mit einer definierten Anpresskraft an mindestens eines der Gehäuseteile in berührender Weise anlegt, wobei die benachbart zueinander angeordneten Gehäuseteile sich mit ihren jeweils freien Öffnungsbereichen gegenseitig überlappen und wobei die Halteeinrichtung in diesem Überlappungsbereich aufgenommen ist, wobei die Halteeinrichtung in einer nutartigen Kehlung des einen Gehäuseteils zumindest teilweise aufgenommen ist und in einer Vormontagestellung mit einem vorgebbaren Überstand in federelastisch nachgiebiger Weise mit der Trenneinrichtung an der Festlegestelle in Verbindung steht und wobei in der Montagestellung der Überstand rückgestellt die Anpresskraft auf die Trenneinrichtung im Bereich der Festlegestelle aufbringt.The DE 10 2007 003 724 A1 describes a storage device, in particular in the form of a hydraulic accumulator, comprising a storage housing at least two housing parts which at least partially delimit a working space in the storage housing in which a separating device movably guided two media spaces separated from each other and held stationary by means of a holding device in the storage enclosure at a predetermined fixing point, wherein the holding means by means of a separate, different from the housing parts Anpressteils at least the separating device partly in the region of the fixing point with a defined contact force on at least one of the housing parts in a touching manner, wherein the adjacently arranged housing parts overlap each other with their respective free opening areas and wherein the holding device is received in this overlap region, wherein the holding device in a groove-like groove of a housing part is at least partially received and in a pre-assembly with a predetermined projection in spring elastic compliant manner with the separator at the fixing point is in communication and wherein in the assembled position, the supernatant reset the contact pressure on the separator in the region of the fixing point applies.

Der Erfindung liegt daher ausgehend vom aufgezeigten Stand der Technik die Aufgabe zugrunde, verbesserte Speichereinrichtungen aufzuzeigen, welche die Nachteile des Standes der Technik nicht aufweisen und insbesondere schneller und kostengünstiger herstellbar sind. Ferner soll ein Verfahren zur Herstellung von solchen Speichereinrichtungen aufgezeigt werden.The invention is therefore based on the cited prior art, the task of demonstrating improved memory devices, which do not have the disadvantages of the prior art and in particular faster and cheaper to produce. Furthermore, a method for producing such memory devices is to be shown.

Diese Aufgabe wird zum einem durch eine Speichereinrichtung mit den Merkmalen von Patentanspruch 1 gelöst. Vorteilhafte Ausführungsformen der Speichereinrichtungen ergeben sich aus den Unteransprüchen 2 bis 6.This object is achieved on the one hand by a memory device having the features of patent claim 1. Advantageous embodiments of the memory devices will become apparent from the dependent claims 2 to 6.

Ein erfindungsgemäßes Verfahren zur Herstellung einer solchen Speichereinrichtung geht aus Anspruch 7 hervor.An inventive method for producing such a memory device is apparent from claim 7.

Gemäß dem kennzeichnenden Teil von Anspruch 1 ist vorgesehen, dass die Trenneinrichtung im Bereich ihres freien Öffnungsrandes in einer nutartigen Vertiefung einer der Gehäuseteile aufgenommen ist, deren Aufnahmelänge kürzer bemessen ist als die weitere Aufnahmelänge der Kehlung im anderen Gehäuseteil, die ansonsten deckungsgleich benachbart gegenüberliegend in den benachbarten Gehäuseteilen in deren Überlappungsbereich angeordnet sind.According to the characterizing part of claim 1, it is provided that the separating device is accommodated in the region of its free opening edge in a groove-like depression of one of the housing parts, the recording length is shorter than the other recording length of the groove in the other housing part, which otherwise congruent adjacent to each other in the adjacent housing parts are arranged in the overlapping region.

Es ist ferner vorgesehen, dass die Halteeinrichtung die Trenneinrichtung bei gleichbleibender oder im Wesentlichen gleichbleibender Wandstärke im Bereich der Festlegestelle mit einer definierten Anpresskraft an mindestens eines der Gehäuseteile in berührender Weise anlegt.It is further provided that the holding device applies the separator in a constant or substantially constant wall thickness in the region of the fixing point with a defined contact pressure on at least one of the housing parts in a touching manner.

Die erfindungsgemäße Lösung hat den Vorteil, dass die Halteeinrichtung und die Trenneinrichtung separat hergestellt und an den jeweiligen Gehäuseteilen angeordnet werden können und erst bei der Montage zusammen verbaut werden. Die Halteeinrichtung legt im zusammengebauten Zustand die Trenneinrichtung in abdichtender Weise in der Speichereinrichtung dauerhaft fest. Unter dem Begriff "in berührender Weise" wird in diesem Zusammenhang verstanden, dass die Trenneinrichtung direkt bzw. unmittelbar an dem jeweiligen Gehäuseteil anliegt, ohne dass weitere Teile oder Elemente zwischen der Trenneinrichtung und dem Gehäuseteil vorgesehen sind. Mithin ist die Speichervorrichtung insgesamt einfacher und schneller und damit kostengünstiger herstellbar.The solution according to the invention has the advantage that the holding device and the separating device can be manufactured separately and arranged on the respective housing parts and installed together only during assembly. In the assembled state, the holding device permanently secures the separating device in a sealing manner in the storage device. The term "in a touching manner" in this context means that the separating device rests directly or directly on the respective housing part, without further parts or elements being provided between the separating device and the housing part. Consequently, the storage device is simpler and faster overall and therefore less expensive to produce.

Eine weitere Lösung der Aufgabe besteht gemäß dem kennzeichnenden Teil des Anspruchs 2 darin, dass die Halteeinrichtung mittels eines eigenständigen, von den Gehäuseteilen verschiedenen Anpressteils die Trenneinrichtung zumindest teilweise im Bereich der Festlegestelle mit einer definierten Anpresskraft an mindestens eines der Gehäuseteile in berührender Weise anlegt.A further solution of the problem is according to the characterizing part of claim 2 is that the holding means by means of a separate, different from the housing parts Anpressteils the separator at least partially in the region of the fixing point with a defined contact force against at least one of the housing parts in a touching manner.

Diese Lösung hat den Vorteil, dass die Trenneinrichtung kraftschlüssig bzw. klemmend an einem Gehäuseteil gehalten ist. Auch hier bedarf es keiner weiteren Maßnahmen, um die notwendige Festigkeit der Verbindung und die Dichtheit zu gewährleisten. Ein weiterer Vorteil dieser Lösung ist, dass die Montage gleichfalls einfach und zeitsparend möglich ist.This solution has the advantage that the separator is held non-positively or clampingly on a housing part. Again, there is no need for further measures to ensure the necessary strength of the connection and the tightness. Another advantage of this solution is that the assembly is also easy and time-saving possible.

Bevorzugt überlappen sich die benachbart zueinander angeordneten Gehäuseteile mit ihren jeweils freien Öffnungsbereichen gegenseitig und die Halteeinrichtung ist in diesem Überlappungsbereich aufgenommen. Durch die überlappende Anordnung kann die Halteeinrichtung zwischen den Gehäuseteilen wirken, wobei die Verpressung der Gehäuseteile vorteilhaft genutzt werden kann, um die notwendige Haltekraft für die Trenneinrichtung bzw. den notwendigen Anpressdruck für das Anpressteil zu erzeugen. Die Halteeinrichtung ist dabei in einem Bereich der maximalen Wandstärke der Speichereinrichtung vorgesehen, so dass ausreichend Raum zur Verfügung steht, um die Halteeinrichtung in diesem Bereich in Ausnehmungen der Gehäuseteile anzuordnen.The adjacently arranged housing parts preferably overlap one another with their respective free opening areas and the holding device is accommodated in this overlapping area. Due to the overlapping arrangement, the holding device can act between the housing parts, wherein the compression of the housing parts can be advantageously used to generate the necessary holding force for the separator or the necessary contact pressure for the pressing. The holding device is provided in a region of the maximum wall thickness of the storage device, so that sufficient space is available to arrange the holding device in this area in recesses of the housing parts.

Der in der Montagestellung rückgestellte Überstand kann vorteilhaft einen bündigen Abschluss zwischen der Halteeinrichtung und mindestens einem der Gehäuseteile ergeben, so dass insoweit eine Art Selbstzentrierung der miteinander zu verbindenden Teile geschaffen ist.The projecting in the mounting position supernatant can advantageously result in a flush termination between the holding device and at least one of the housing parts, so that insofar a kind of self-centering of the parts to be joined is created.

Die Halteeinrichtung hält die Trenneinrichtung an der Festlegestelle im Speichergehäuse bevorzugt klebstofffrei. Hierdurch muss kein zusätzlicher Haftvermittler vorgesehen werden und der Zeitaufwand für das Auftragen des Klebstoffs kann entfallen.The holding device holds the separator at the fixing point in the storage housing preferably free of adhesive. This requires no additional Adhesive are provided and the time required for the application of the adhesive can be omitted.

Die größer bemessene Aufnahmelänge der Kehlung schafft vorteilhaft in derselben einen Ausgleichsraum, in den die Halteeinrichtung, insbesondere im Montagezustand des Speichergehäuses, ausweichen kann. Auf diese Weise wird eine unnötige Quetschung oder Scherbeanspruchung der Halteeinrichtung vermieden und es ergibt sich durch die axiale Verlängerung der Halteeinrichtung ein vergrößerter Befestigungs- und Dichtbereich für die Trenneinrichtung. Mithin wird die Trenneinrichtung besonders sicher und gut abdichtend im Speichergehäuse festgelegt.The larger dimensioned receiving length of the throat advantageously creates in the same a compensation space into which the holding device, in particular in the assembled state of the storage housing, can escape. In this way, an unnecessary crushing or shearing stress of the holding device is avoided and it follows through the axial extension of the holding device, an enlarged mounting and sealing area for the separator. Thus, the separator is set very safe and good sealing in the storage enclosure.

Besonders vorteilhaft ist das eigenständige Anpressteil der Halteeinrichtung ringförmig ausgebildet und weist vorzugsweise zumindest an der Stelle des Auslaufs der Wand der Trenneinrichtung aus der nutartigen Vertiefung des einen Gehäuseteils eine Querschnittsveränderung dergestalt auf, dass die aus elastisch nachgiebigem Material gebildete Wand der Trenneinrichtung die Vertiefung ohne wesentliche Wanddickenänderung verlässt. Durch das ringförmige Anpressen wird die Anpresskraft besonders gleichmäßig auf die Trenneinrichtung ausgeübt. Dies hat den Vorteil, dass die Trenneinrichtung besonders gut abdichtend in dem Speichergehäuse aufgenommen ist. Durch die spezielle Querschnittsgeometrie des Anpressteils ist zudem sichergestellt, dass die Trenneinrichtung im Bereich des Übergangs von der nutartigen Vertiefung in den übrigen Teil des Speichergehäuses nicht übermäßig stark belastet oder gar gequetscht wird. Dies trägt dazu bei, die Lebensdauer der Trenneinrichtung und damit der betreffenden Speichereinrichtung zu verlängern.Particularly advantageously, the independent Anpressteil the holding device is annular and preferably has at least at the point of the outlet of the wall of the separator from the groove-like depression of a housing part a cross-sectional change in such a way that the wall of the separator formed of elastically resilient material, the recess without significant change in wall thickness leaves. By the annular pressing the contact pressure is exerted particularly uniformly on the separator. This has the advantage that the separating device is accommodated particularly good sealing in the storage housing. Due to the special cross-sectional geometry of the pressing member is also ensured that the separator is not excessively burdened or even squeezed in the region of the transition from the groove-like depression in the remaining part of the storage enclosure. This helps to extend the life of the separator and thus the memory device concerned.

Die Trenneinrichtung kann in der Art einer Schale aus elastisch nachgiebigem Material gebildet sein, die im Betrieb der Speichereinrichtung in zumindest einen abgehobenen, einen Medieneinlass des Speichergehäuses freigebenden Bewegungszustand gelangt, bei dem die Trenneinrichtung quer zur Festlegestelle einen Verlauf einnimmt, bei dem sie sich gegen einen Anlagefuß in einem der Gehäuseteile, der die Kehlung begrenzt, unter Entlastung der Festlegestelle abstützt. Wird die Trenneinrichtung hinreichend weit in das Speichergehäuse nach oben verlagert, so kommt die Trenneinrichtung automatisch an dem Anlagefuß zur Anlage. Dies bringt es mit sich, dass Bewegungskräfte der Trennmembran in den Anlagefuß eingeleitet werden können, die dann nicht mehr an der Festlegestelle zwischen der Halteeinrichtung und dem gegenüberliegenden Gehäuseteil eingeleitet werden müssen. Insofern kommt es zu einer Entlastung, die dazu beiträgt, dass die Lebensdauer der Trenneinrichtung deutlich gegenüber bekannten Vergleichslösungen verlängert ist.The separating device may be formed in the manner of a shell made of elastically yielding material which, during operation of the storage device, enters at least one lifted state of movement releasing a media inlet of the storage housing, in which the separating device transversely to the fixing point takes a course in which it is supported against a plant foot in one of the housing parts, which limits the throat, under relief of the fixing point. If the separating device is displaced sufficiently far into the storage housing, the separating device automatically comes to rest against the plant foot. This entails that movement forces of the separation membrane can be introduced into the plant foot, which then no longer have to be introduced at the fixing point between the holding device and the opposite housing part. In this respect, there is a discharge, which contributes to the life of the separator is significantly extended compared to known comparative solutions.

Das Montageverfahren zum Herstellen einer Speichereinrichtung ist dadurch gekennzeichnet, dass ein freier Endbereich einer Trenneinrichtung in ein schalenförmiges Gehäuseteil mit einer nutartigen Vertiefung eingelegt wird, dass ein Anpressteil der Halteeinrichtung in ein weiteres schalenförmiges Gehäuseteil mit einer Kehlung mit einem vorgebbaren, federelastisch nachgiebigen Überstand eingelegt wird, der beim Zusammenfahren der Gehäuseteilschalen unter Bildung des Speichergehäuses von der Gehäusewand des einen Gehäuseteils rückgestellt wird und dergestalt mit seiner Rückstellkraft im fertigen Endmontagezustand die benötigte Anpresskraft auf die festzulegende Trenneinrichtung an der Festlegestelle im Speichergehäuse ausübt. Das dahingehende Herstell- oder Montageverfahren lässt sich auch bei großen Stückzahlen prozesssicher durchführen.The mounting method for producing a memory device is characterized in that a free end region of a separating device is inserted into a shell-shaped housing part with a groove-like depression, that a pressing part of the holding device is inserted into a further shell-shaped housing part with a groove with a predeterminable, resiliently resilient projection, which is restored during the collapse of the housing part shells to form the storage enclosure of the housing wall of a housing part and thus exerts the required contact pressure on the separator to be determined at the fixing point in the storage housing with its restoring force in the final final assembly state. The pertinent manufacturing or assembly process can be carried out reliably even with large quantities.

Die Erfindung ist nachfolgend anhand von einem in der Figur dargestellten Ausführungsbeispiel näher erläutert.The invention is explained in more detail below with reference to an embodiment shown in the figure.

Die einzige Figur zeigt in einem Längsschnitt eine erfindungsgemäße Speichereinrichtung 1, insbesondere in Form eines Hydrospeichers, mit einem Speichergehäuse 3 bestehend aus zwei Gehäuseteilen 5, 7, die einen Arbeitsraum 9 in dem Speichergehäuse 3 begrenzen, in dem eine Trenneinrichtung 11 bewegbar geführt zwei Medienräume 13, 15, nämlich in Form eines Gasraumes 13 und eines Flüssigkeitsraumes 15, voneinander separiert und mittels einer Halteeinrichtung 17 im Speichergehäuse 3 an einer vorgebbaren Festlegestelle 19 ortsfest gehalten ist.The single FIGURE shows a longitudinal section of a storage device 1 according to the invention, in particular in the form of a hydraulic accumulator, with a storage housing 3 consisting of two housing parts 5, 7, which delimit a working space 9 in the storage housing 3, in which a separation device 11 movably guided two media spaces 13, 15, namely in the form of a gas space 13 and a liquid space 15, separated from each other and held stationary by means of a holding device 17 in the storage enclosure 3 at a predetermined fixing point 19.

Dahingehende Speichervorrichtungen 1 können beispielsweise innerhalb einer hydraulischen Anlage zum Ausgleich von Druckschwankungen, zur Energiespeicherung, zum Auffangen von Pulsationsstößen einer Pumpe etc. dienen. Die Gehäuseteile 5, 7 sind dabei schalenförmig und zu einer Längsachse LA rotationssymmetrisch ausgebildet. Die Gehäuseteile 5, 7 sind bevorzugt aus einer Aluminiumlegierung in einem Arbeitsgang im Rahmen eines üblichen Pressumformverfahrens hergestellt.These storage devices 1 can serve, for example, within a hydraulic system to compensate for pressure fluctuations, for energy storage, for capturing Pulsationsstößen a pump, etc. The housing parts 5, 7 are shell-shaped and rotationally symmetrical to a longitudinal axis LA. The housing parts 5, 7 are preferably made of an aluminum alloy in one operation in the context of a conventional Pressumformverfahrens.

An dem in der Bildebene unteren Gehäuseteil 5 ist ein Medieneinlass 21 einstückig ausgebildet. Der Medieneinlass 21 umfasst einen rohrförmigen Stutzen 23, der mit einem Außengewinde 25 versehen ist. Das obere Gehäuseteil 7 weist einen Anschlusskörper 27 mit einer Öffnung 28 auf, durch welche ein Arbeitsgas, insbesondere Stickstoff, in das Speichergehäuse 1 in üblicher Weise eingebracht werden kann. Die Öffnung 28 ist durch ein Verschlussteil 29 verschlossen, das bevorzugt mit den sonstigen Gehäuseteilen verschweißt ist. Als zusätzlicher Schutz ist eine das Verschlussteil 29 umgebende Abdeckung 31 vorgesehen. Die Abdeckung 31 ist formschlüssig am oberen Gehäuseteil 7, beispielsweise mittels einer Schweißverbindung, festgelegt und kann außenumfangsseitig Flächen, beispielsweise in Form eines Sechskants aufweisen zum Festlegen des Speichers an nicht dargestellten Drittbauteilen eines Hydrauliksystems mittels eines nicht dargestellten Festlegewerkzeuges, wie eines Gabelschlüssels oder dergleichen.At the lower in the image plane housing part 5, a media inlet 21 is integrally formed. The media inlet 21 comprises a tubular connecting piece 23 which is provided with an external thread 25. The upper housing part 7 has a connection body 27 with an opening 28, through which a working gas, in particular nitrogen, can be introduced into the storage housing 1 in the usual way. The opening 28 is closed by a closure part 29, which is preferably welded to the other housing parts. As additional protection, a cover 31 surrounding the closure part 31 is provided. The cover 31 is positively fixed to the upper housing part 7, for example by means of a welded joint, and may have outer peripheral side surfaces, for example in the form of a hexagon for fixing the memory to third components of a hydraulic system, not shown, by means of a fixing tool, not shown, such as a fork wrench or the like.

Ein freier Öffnungsrand 33 des unteren Gehäuseteils 5 überlappt in einem Öffnungsbereich 35 mit seiner Innenseite 37 einen Öffnungsbereich 39 des oberen Gehäuseteils 7 entlang seines Außenumfanges 41, der sich im gezeigten Montagezustand in etwa auf der Hälfte der Höhe des Speichergehäuses 1 befindet. Das untere Gehäuseteil 5 weist dabei einen in seiner Wandstärke reduzierten Längsrand 43 auf, der sich umfangsseitig entlang einer zugeordneten Anlagefläche 45 des oberen Gehäuseteils 7 unter Anlage mit derselben erstreckt. An einer Übergangsstelle 47, an der sich die Wandstärke des unteren Gehäuseteils 5 reduziert, ist ein axialer Anschlag für das obere Gehäuseteil 7 gebildet. Gleichfalls ist das obere Gehäuseteil 7 mit einem nach außen vorstehenden Absatz 51 versehen, so dass im Montagezustand die Gehäuseteile 5, 7 an den jeweiligen Anschlägen 47, 51 in Anlage miteinander kommen. Anschließend wird der Längsrand 43 in üblicher Weise umgebördelt, um die Gehäuseteile 5, 7 dauerhaft und dicht miteinander zu verbinden.A free opening edge 33 of the lower housing part 5 overlaps in an opening portion 35 with its inner side 37 an opening portion 39 of the upper housing part 7 along its outer periphery 41, which in the assembled state shown in about half of the height of the storage enclosure 1 is located. The lower housing part 5 in this case has a reduced in its wall thickness longitudinal edge 43 which extends circumferentially along an associated bearing surface 45 of the upper housing part 7 under the same. At an intermediate point 47, at which the wall thickness of the lower housing part 5 is reduced, an axial stop for the upper housing part 7 is formed. Likewise, the upper housing part 7 is provided with an outwardly projecting shoulder 51, so that in the assembled state, the housing parts 5, 7 come into contact with each other at the respective stops 47, 51. Subsequently, the longitudinal edge 43 is crimped in a conventional manner to connect the housing parts 5, 7 permanently and tightly together.

Zwischen den Gehäuseteilen 5, 7 ist die Trenneinrichtung 11 vorgesehen. Erfindungsgemäß liegt die Trenneinrichtung 11 bei gleichbleibender oder im Wesentlichen gleichbleibender Wandstärke im Bereich der Festlegestelle 19 mit einer definierten Anpresskraft an dem unteren Gehäuseteil 5 in berührender Weise, d. h. direkt, an. Die Halteeinrichtung 17 legt dabei mittels eines eigenständigen, von den Gehäuseteilen 5, 7 verschiedenen Anpressteils 53 die Trenneinrichtung 11 im Bereich der Festlegestelle 19 mit einer definierten Anpresskraft an das untere Gehäuseteil 5 in berührender Weise an.Between the housing parts 5, 7, the separator 11 is provided. According to the invention, the separating device 11 is at a constant or substantially constant wall thickness in the region of the fixing point 19 with a defined contact pressure on the lower housing part 5 in a touching manner, d. H. directly to. The holding device 17 sets by means of a separate, different from the housing parts 5, 7 pressing part 53, the separator 11 in the region of the fixing point 19 with a defined contact pressure on the lower housing part 5 in a touching manner.

Die im Querschnitt gesehen im Wesentlichen rechteckförmige Halteeinrichtung 17 ist in dem Überlappungsbereich 54 in einer nutartigen Kehlung 55 aufgenommen und steht in einer Vormontagestellung mit einem vorgebbaren Überstand in federelastisch nachgiebiger Weise mit der Trenneinrichtung 11 an der Festlegestelle 19 in Verbindung. In der gezeigten Montagestellung bringt der Überstand rückgestellt die Anpresskraft auf die Trenneinrichtung 11 im Bereich der Festlegestelle 19 auf. Wie man in der Figur sehen kann, ergibt der in der Montagestelle rückgestellte Überstand einen bündigen Abschluss der Halteeinrichtung 17 mit dem oberen Gehäuseteil 7. Die Halteeinrichtung 17 hält dabei die Trenneinrichtung 11 an der Festlegestelle 19 im Speichergehäuse 1 klebstofffrei. Die Trenneinrichtung 11 ist im Bereich ihres freien Öffnungsrandes 59 in einer nutartigen Vertiefung 61 des unteren Gehäuseteils 5 aufgenommen, deren Länge LV kürzer bemessen ist als die Aufnahmelänge LK der Kehlung 55 im oberen Gehäuseteil 7. Es ist bei einer nicht dargestellten Ausführungsform aber auch möglich LK gleich LV zu währen. Ansonsten sind die Kehlung 55 und die Vertiefung 61 deckungsgleich benachbart gegenüberliegend in einem Überlappungsbereich 54 der benachbarten Gehäuseteile 5, 7 angeordnet. Die größer bemessene Aufnahmelänge LK der Kehlung 55 schafft in derselben einen Ausgleichsraum 63, in den die Halteeinrichtung 17, insbesondere im Montagezustand des Speichergehäuses 1, ausweichen kann.The holding device 17, which is substantially rectangular in cross-section, is received in the groove area 55 in a groove-like groove 55 and is connected in a pre-assembly position with a predeterminable projection in a spring-resilient manner to the separating device 11 at the fixing point 19. In the assembly position shown, the supernatant recovers the contact pressure on the separating device 11 in the region of the fixing point 19. As can be seen in the figure, the supernatant recovered in the mounting position results in a flush closure of the holding device 17 with the upper housing part 7. The holding device 17 holds the separating device 11 at the fixing point 19 in the storage enclosure 1 adhesive-free. The separator 11 is added in the region of its free opening edge 59 in a groove-like recess 61 of the lower housing part 5, whose length LV is shorter than the length of the recording LK 55 of the throat in the upper housing part 7. It is in an embodiment not shown but also possible LK equal to LV. Otherwise, the groove 55 and the depression 61 are arranged congruently adjacent to one another in an overlapping region 54 of the adjacent housing parts 5, 7. The larger sized receiving length LK of the groove 55 creates in the same a compensation chamber 63, in which the holding device 17, in particular in the assembled state of the storage case 1, can escape.

Das eigenständige Anpressteil 53 der Halteeinrichtung 17 ist ringförmig ausgebildet und weist zumindest an der Stelle des Auslaufs 65 der Wand 67 der Trenneinrichtung 11 aus der nutartigen Vertiefung 61 des unteren Gehäuseteils 5 eine Querschnittsveränderung dergestalt auf, dass die aus elastisch nachgiebigem Material gebildete Wand 67 der Trenneinrichtung 11 ohne wesentliche Wanddickenänderung die Vertiefung 61 verlassen kann. Die Querschnittsveränderung ist durch einen Absatz 69 im Anpressteil 53 gebildet, dessen Kanten abgerundet sind. Insbesondere bei einer speziellen Stahl- oder Aluversion der Gehäuseteile 5, 7 kann auf die nutartige Vertiefung 61 auch vollständig verzichtet werden, so dass der Öffnungsrand 59 der Trennmembran 11 an einer nach oben hin eben auslaufenden Gehäusewand der unteren Membranschale 5 sich in abdichtender Weise anlegen kann.The independent Anpressteil 53 of the holding device 17 is annular and has at least at the point of the outlet 65 of the wall 67 of the separator 11 from the groove-like recess 61 of the lower housing part 5, a cross-sectional change in such a way that the wall formed of elastically resilient material material 67 of the separator 11 can leave the recess 61 without significant change in wall thickness. The change in cross section is formed by a shoulder 69 in Anpressteil 53, the edges are rounded. In particular, in a special steel or aluminum version of the housing parts 5, 7 can be completely dispensed with the groove-like recess 61 so that the opening edge 59 of the separation membrane 11 can invest in a sealingly extending at the top just housing wall of the lower membrane shell 5 ,

Die Trenneinrichtung 11 ist in der Art einer Schale 71 aus elastisch nachgiebigem Material in der Art einer Membran ausgebildet. Die Schale 71 gelangt im Betrieb der Speichereinrichtung 1 in zumindest einen abgehobenen, den Medieneinlass 21 des Speichergehäuses 1 freigebenden Bewegungszustand, bei dem quer zur Festlegestelle 19 die Trenneinrichtung einen Verlauf einnimmt, bei dem sie sich gegen einen Anlagefuß 73 im oberen Gehäuseteil 7, der die Kehlung 55 begrenzt, unter Entlastung der Festlegestelle 19 abstützen kann. Im Bereich des Medieneinlasses 21 ist ein scheibenförmiger Ventilköper 75 vorgesehen, der außen an der Trenneinrichtung 11 angeordnet ist oder in die Trenneinrichtung 11 eingegossen oder eingeknüpft
sein kann. Im in der Figur gezeigten Zustand der vollständigen Entleerung des Flüssigkeitsraums 15 kommt der Ventilkörper 75 den Medieneinlass 21 abdeckend am unteren Gehäuseteil 5 mit diesem in Anlage. Insbesondere bei der Realisierung des Speichers als Aluversion kann auf den Ventilteller 75 aber auch verzichtet werden, da dieser bei dem dann eingestellten niedrigen Vorspanndruck für die Gewebeeinlage nicht benötigt wird.The separator 11 is formed in the manner of a shell 71 made of elastically yielding material in the manner of a membrane. The shell 71 passes during operation of the storage device 1 in at least one lifted, the media inlet 21 of the storage housing 1 releasing movement state in which transversely to the fixing point 19, the separator occupies a course in which they are against a Anlagefuß 73 in the upper Housing part 7, which limits the throat 55, can support the relief of the fixing point 19. In the area of the media inlet 21, a disc-shaped valve body 75 is provided, which is arranged on the outside of the separating device 11 or cast or knotted into the separating device 11
can be. In the state shown in the figure of the complete emptying of the liquid space 15 of the valve body 75 comes the media inlet 21 covering the lower housing part 5 with this in Appendix. In particular, in the realization of the memory as aluminum version but can be dispensed with the valve plate 75, since this is not required at the then set low biasing pressure for the fabric insert.

Die erfindungsgemäße Speichereinrichtung 1 kann besonders einfach und schnell hergestellt werden. Dazu wird in das schalenförmige untere Gehäuseteil 5 mit einer nutartigen Vertiefung 61 der freie Endbereich 59 der Trenneinrichtung 11 eingelegt. In das obere schalenförmige Gehäuseteil 7 mit einer Kehlung 55 wird dann ein Anpressteil 53 der Halteeinrichtung 17 mit einem vorgebbaren, federelastisch nachgiebigen Überstand eingelegt. Der Überstand wird beim Zusammenfahren der Gehäuseteilschalen 5, 7 unter Bildung des Speichergehäuses 1 von der Gehäusewand 77 des oberen Gehäuseteils 7 rückgestellt und übt dergestalt mit seiner Rückstellkraft im fertigen Endmontagezustand die benötigte Anpresskraft auf die festzulegende Trenneinrichtung 11 an der Festlegestelle 19 im Speichergehäuse 1 aus.The memory device 1 according to the invention can be produced particularly easily and quickly. For this purpose, in the cup-shaped lower housing part 5 with a groove-like recess 61 of the free end portion 59 of the separator 11 is inserted. In the upper shell-shaped housing part 7 with a Kehlung 55 then a Anpressteil 53 of the holding device 17 is inserted with a predetermined, resilient elastic supernatant. The supernatant is reset when moving the housing part shells 5, 7 with the formation of the storage enclosure 1 of the housing wall 77 of the upper housing part 7 and exercises in such a way with its restoring force in the final final assembly state, the required contact pressure on the separator to be determined 11 at the fixing point 19 in the storage enclosure 1.

Die erfindungsgemäße Lösung hat den Vorteil, dass die Halteeinrichtung 17 und die Trenneinrichtung 11 separat hergestellt und an den jeweiligen Gehäuseteilen 5, 7 angeordnet werden können und erst bei der Montage zusammen verbaut werden. Dabei wird die Halteeinrichtung 17 dazu genutzt, die Trenneinrichtung 11 in abdichtender Weise in der Speichereinrichtung 1 festzulegen. Dadurch, dass die Trenneinrichtung 11 an einem der Gehäuseteile 5, 7 anliegt, gibt es keinen notwendigen Bedarf für zusätzliche Teile, um die Abdichtung zu gewährleisten. Mithin ist die Speichervorrichtung 1 insgesamt einfacher und schneller und damit kostengünstiger herstellbar sowie aufgrund der erfindungsgemäßen Festlegung der Trenneinrichtung langandauernd und funktionssicher nutzbar.The solution according to the invention has the advantage that the holding device 17 and the separating device 11 can be manufactured separately and arranged on the respective housing parts 5, 7 and installed together only during assembly. In this case, the holding device 17 is used to set the separator 11 in a sealing manner in the storage device 1. Characterized in that the separator 11 rests against one of the housing parts 5, 7, there is no necessary need for additional parts, to ensure the seal. Consequently, the storage device 1 is generally simpler and faster and thus cheaper to produce and due to the determination of the separator according to the invention long-lasting and reliable use.

Claims (7)

  1. A storage device, in particular in the form of a hydraulic accumulator, that has an accumulator housing (3) consisting of at least two housing parts (5, 7) that at least partially delimit a working chamber (9) within the accumulator housing (3) in which a separator (11), guided moveably, separates two medium chambers (13, 15) from one another and is held, fixed, at a pre-specifiable fixing point (19) within the accumulator housing (3) by means of a holding device (17), by means of an independent pressing part (53) different from the housing parts (5, 7) the holding device (17) positioning at least the separator (11) partially in the region of the fixing point (19) with a defined pressing force so that it is in contact with at least one of the housing parts (5, 7), the housing parts (5, 7) arranged adjacent to one another overlapping one another with their respectively free opening regions (35, 39) and the holding device (17) being received in this overlap region (54), the holding device (17) being received at least partially in a groove-like channel (55) of the one housing part (7), and in a pre-assembly position being connected with a pre-specifiable protrusion in a spring-elastically flexible manner to the separator (11) at the fixing point (19), and in the assembly position the protrusion, re-set, applying the pressing force to the separator (11) in the region of the fixing point (19), characterised in that the separator (11) is received in the region of its free opening edge (59) in a groove-like indentation (61) of one of the housing parts (5, 7), the receiving length (LV) of which is shorter than the other receiving length (LK) of the channel (55) in the other housing part (7, 5) which are otherwise arranged congruently and lying opposite one another adjacently in the adjacent housing parts (5, 7) in their overlap region (54).
  2. The storage device according to Claim 1 or 2, characterised in that the protrusion that is re-set in the assembly position results in a flush ending between the holding device (17) and at least one of the housing parts (5, 7).
  3. The storage device according to any of the preceding claims, characterised in that the holding device (17) holds the separator (11) at the fixing point (19) within the accumulator housing (3) without any adhesive.
  4. The storage device according to any of the preceding claims, characterised in that the larger receiving length (LK) of the channel (55) creates within the latter a compensating chamber (63) into which the holding device (17) can divert, in particular in the assembled state of the accumulator housing (1).
  5. The storage device according to any of the preceding claims, characterised in that the independent pressing part (53) of the holding device (17) is made annularly and preferably has, at least at the point of the run-out (65) of the wall (67) of the separator (11) from the groove-like indentation (61) of the one housing part (5, 7) a cross-sectional change such that the wall (67) of the separator (11) that is formed of an elastically flexible material leaves the indentation (61) without any substantial change in wall thickness.
  6. The storage device according to any of the preceding claims, characterised in that the separator (11) is formed from an elastically flexible material in the manner of a shell (71) that, during operation of the storage device (11), passes into at least a raised movement state that clears a medium inlet (21) of the accumulator housing (3) in which the separator (11) adopts a course transverse to the fixing point (19) in which it is supported against a system foot (73) in one of the housing parts (5, 7) that delimits the channel (55) such as to relieve the fixing point (19).
  7. The assembly method for producing a storage device according to any of the preceding claims, characterised in that the free end region (59) of a separator (11) is inserted in a shell-shaped housing part (5, 7) with a groove-like indentation (61), that a pressing part (53) of the holding device (17) is inserted in another shell-shaped housing part (7) with a channel (55) with a pre-specifiable, spring-elastically flexible protrusion which, upon moving together the housing part shells (5, 7), is re-set by the housing wall (77) of the one housing part (7) such as to form the accumulator housing (3), and thus, with its re-set force in the complete final assembled state, applies the required pressing force to the separator (11) to be fixed at the fixing point (19) within the accumulator housing (3).
EP15000660.9A 2014-04-12 2015-03-06 Storage devices and mounting method for manufacturing such storage devices Active EP2930374B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014005511.6A DE102014005511A1 (en) 2014-04-12 2014-04-12 Memory devices and assembly methods for producing such memory devices

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EP2930374A1 EP2930374A1 (en) 2015-10-14
EP2930374B1 true EP2930374B1 (en) 2017-02-22

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DE (1) DE102014005511A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6803271B2 (en) 2017-03-13 2020-12-23 日本発條株式会社 accumulator
CN114101960B (en) * 2021-12-18 2022-07-22 浙江奥莱尔液压有限公司 Energy accumulator and production process thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2019326C3 (en) * 1970-04-22 1975-08-07 Winkelmann & Pannhoff Gmbh, 4730 Ahlen Pressure equalization tank
DE2623950A1 (en) * 1976-05-28 1977-12-01 Integral Hydraulik Langen & Co Hydropneumatic pressure store - contains dividing membrane of solution resistant material with additional sealing ring
DE10116235A1 (en) * 2001-03-31 2002-10-17 Hydac Technology Gmbh Hydropneumatic pressure accumulator
DE10355435B3 (en) 2003-11-27 2005-05-19 Hydac Technology Gmbh Hydraulic oil reservoir for hydraulic circuit has housing divided internally by separation element secured via fixing component cooperating with edge rim attached to free edge of separation element
DE102007003724A1 (en) * 2007-01-25 2008-07-31 Hydac Technology Gmbh Pressure vessel, in particular hydraulic accumulator
DE102009021463A1 (en) 2009-05-15 2010-11-18 Hydac Technology Gmbh hydraulic accumulator

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EP2930374A1 (en) 2015-10-14

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