EP2956667B1 - Assembly comprising a pump element and a fixing flange - Google Patents

Assembly comprising a pump element and a fixing flange Download PDF

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Publication number
EP2956667B1
EP2956667B1 EP13815776.3A EP13815776A EP2956667B1 EP 2956667 B1 EP2956667 B1 EP 2956667B1 EP 13815776 A EP13815776 A EP 13815776A EP 2956667 B1 EP2956667 B1 EP 2956667B1
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EP
European Patent Office
Prior art keywords
housing
pump element
shoulder
assembly according
pumping element
Prior art date
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Active
Application number
EP13815776.3A
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German (de)
French (fr)
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EP2956667A1 (en
Inventor
Waldemar Kiel
Hrvoje Lalic
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2956667A1 publication Critical patent/EP2956667A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0421—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams

Definitions

  • the invention is based on an assembly comprising a pumping element and a mounting flange for installation in a housing according to the preamble of patent claim 1 and also of a housing for such an assembly.
  • a mounting flange is required to permanently connect such a pumping element to the housing.
  • the outer body of the pumping element and the associated mounting flange is made in one piece as a forged part.
  • the disadvantage here is that the subsequently required for the corresponding forging forming rework, for example by machining, is associated with relatively high production costs.
  • the assembly with the characterizing features of claim 1 has the advantage that, in contrast to the prior art, in which the outer body of the pumping element and the mounting flange are designed integrated, by the present invention separately from each other making the pumping element and the associated mounting flange of the outer body of Pumping element cost reducing as a rotating part of rod material with low Zerspannvolumen can be manufactured and the fastening of the pumping element by means of the separately formed from the outer body of the pumping element and mounted on the pumping element mounting flange.
  • the mounting flange can be manufactured from a cost-effective and from a suitable for the mechanical stress occurring during operation of the mounting flange material.
  • the mounting flange In order to receive the pumping element in the mounting flange, the mounting flange has a central passage opening, which encloses a head region of the pumping element in the assembled state of the module.
  • the mounting flange has at least two mutually symmetrically with respect to the central passage opening opposite retaining tabs for fastening means on the housing.
  • the invention provides that on the outer body of the pumping element a circumferential shoulder on the outer circumference is formed, which is larger in diameter than the head portion and the head portion bounded axially downwards.
  • the shoulder of the pumping element provides a bearing surface for the mounting flange mounted in the intended position on the pumping element.
  • the central passage opening of the fastening flange is of circular design.
  • An embodiment of the invention may consist in that the shoulder of the pumping element when installed in a housing cooperates with a shoulder of the housing. In the intended installation position of the module, the shoulder of the pumping element rests on the shoulder formed in the mouth region of the housing.
  • the pumping element comprises a spring, which acts on the one hand on a formed in the lower region of the pumping element paragraph and on the other hand is provided for support on a stop within the opening of the housing.
  • the axial force generated by the spring acts upwards and presses the pumping element against the mounting flange.
  • An embodiment of the invention is that the mounting flange rests flat on the shoulder of the pumping element. As a result, the mounting flange acts as a rigid element, which fixes the pumping element in the axial direction.
  • the curvature between the central axis of the pumping element and the location of attachment of the mounting flange is formed on the housing.
  • the biasing force can thus be adjusted in this embodiment, depending on the pressure generated by the pumping element during operation, and indeed via the bending of the mounting flange. Due to the bending of the mounting flange, a relatively simple assembly of the assembly is made possible. In addition, the mounting flange exerts as a spring element or bending element from a downward axial force, so that the mounting flange presses against the shoulder of the pumping element. Advantageously, component tolerances in the axial direction can thereby be compensated. According to an expedient development of the mounting flange is formed of strip material, wherein individual lamellae of the strip material are stacked one above the other.
  • each retaining tab has at least one through hole for receiving a respective associated fastener.
  • the fastening means are designed as screws and anchored in corresponding holes in an outer side of the housing.
  • the shoulder and the heel each carry a radially encircling sealing ring. Structural tolerances can be compensated thereby, so that the pumping element is received tightly in the housing opening.
  • Fig. 1 shows in a longitudinal sectional view of an assembly according to the invention designated in its entirety by 10, which comprises a pumping element 11 and a pumping element receiving mounting flange 12.
  • This shows the left half of Fig. 1 a first embodiment of the mounting flange 12 which is flat in profile and thus rests flat on the outside of a housing 22, while the right-side half of Fig. 1 shows a second embodiment of the mounting flange 12, which is curved or arched in profile.
  • the assembly 10 is suitable for installation in a housing. In the intended assembled state of the assembly 10 surrounds in both embodiments of the mounting flange 12 with a centrally formed through hole 50, the head portion 21 of the pumping element 11, which is shown in the figures essentially on the basis of its outer body.
  • the passage opening 50 of the mounting flange 12 is circular, wherein the diameter thereof corresponds approximately to the diameter of the cylindrical head portion 21 of the pumping element 11.
  • the mounting flange 12 has two symmetrically with respect to the longitudinal central axis 24 oppositely arranged retaining tabs 37 with two through holes 23 which are arranged symmetrically to the longitudinal center axis 24 opposite each other and each receive a screw 25 therein with which the mounting flange 12 can be anchored in two blind holes 26 which are formed corresponding to the arrangement of the through holes 23 on the abutment side 27 of the housing 22.
  • the Pumping element 11 is accommodated in a housing opening 28 of the housing 22.
  • the pumping element 11 By means of a sealing ring 31 received on the outer circumference of a shoulder 30 of the pumping element 11, the pumping element 11 is supported in the mouth region of the housing opening 28 and by means of a second sealing ring 32 axially spaced therefrom, the pumping element 11 is supported with its lower region in the housing opening 28.
  • the first embodiment according to the left-side representation of Fig.1 is characterized in that the mounting flange 12 has a planar profile and thus the mounting flange rests flat on the shoulder 30 of the pumping element 11, wherein the through-hole encloses the smaller-diameter head portion 21 axially extending away from the shoulder 30.
  • the pump element 11 in the intended installation position of the assembly 10, the pump element 11 sunk so far into the opening of the housing 22, that in this embodiment, the head portion 21 facing top of the shoulder 30 is aligned with the contact side 27 of the housing 22.
  • a spring 34 is provided in the lower region of the pumping element 11, which on the one hand on - not shown in the figure - bottom or a shoulder of the housing opening and on the other hand on a second sealing ring supporting shoulder 35 and thereby generates an axially upward vertical force acting, with which the shoulder 30 of the pumping element 11 is placed in abutment against the underside of the mounting flange 12.
  • the mounting flange 12 is anchored by means of engaging in the blind holes 26 of the housing 22 screws 25 on the contact side 27 of the housing, that the bottom of the mounting flange is flush with the contact side 27.
  • the vertical force generated by the spring 34 prevents axial displacement of the pumping element downwardly within the housing opening.
  • the second embodiment according to the right side representation of Fig. 1 is characterized in that the mounting flange 12 has a curvature or a curved profile which extends symmetrically to the longitudinal central axis 24 of the assembly 10.
  • the profile is substantially curved like a trough, wherein the central region rests centrally on the shoulder 30 of the pumping element 11, while the off-center region is upwardly arched and thereby protrudes axially away from the shoulder 30 and the abutment side 27 and is spaced.
  • the shoulder 30 of the pumping element 11 Due to the curved profile and this inherent spring force, it is possible by adjusting the screws 25 overcoming the spring force to produce a correspondingly variable deflection of the curved flange profile, whereby an adjustable and axially downward biasing force between the mounting flange 12, the shoulder 30 of the Pumping element 11 and the housing 22 is generated.
  • the shoulder 30 of the pumping element 11 according to the second embodiment has a larger diameter than that of the first embodiment and the mouth area of the housing opening is larger than the axially lower area
  • the underside of the shoulder 30, which according to the second embodiment is formed as a diameter broadening 33 is on the thus formed in the vicinity of the mouth paragraph 38 in the housing opening.
  • the first sealing ring 31 is in the shoulder 30 sealingly on the inner circumference of the housing opening in the region of the mouth above the shoulder 38 at.
  • the in the lower part of the pumping element 11 at the formed there paragraph 35 with its one end acting spring 34 which at its other end in the opening of the housing to a wall portion such as a floor or a paragraph or at a deeper in the housing opening mounted and coupled to the pumping element component such as a shaft supports, generates an axial vertical force upwards, which presses the shoulder 30 of the pumping element 11 against the underside of the mounting flange 12 in the center of the shoulder 30 adjacent central portion.
  • the mounting flange is designed in this embodiment as a bending element or bending beam, axial component tolerances are compensated.
  • the mounting flange 12 is preferably formed from strip material and may be formed of lamellar superimposed individual elements, which are each formed from the strip material, wherein the individual elements can be inexpensively designed as stampings.
  • Fig. 2 shows a cross section through the pumping element 11 according to the first embodiment, wherein a key surface 40 is provided on the head portion of the pumping element 11, which serves to define an angular position of the pumping element 11.
  • Fig. 3 illustrates in a plan view of the built-in housing 22 assembly 10 according to the second embodiment.
  • the head portion 21 of the pumping element 11 protrudes from the central through hole 50 of the mounting flange 12 and the retaining tabs 37 by cross-screws 25 fix the mounting flange 12 to the housing 22.
  • the mounting flange 12 with the symmetrically opposed retaining tabs 37th an oval or elliptical shape.
  • the invention provides for the pumping element 11 and the fastening flange 12 of the assembly 10 to be designed separately from one another.
  • the mounting flange 12 has a central passage opening 50, which encloses a head portion 21 of the pumping element 11 in the assembled state of the assembly 10 and further at least two mutually symmetrically with respect to the central passage opening retaining tabs 37 for fastening means on the housing 22.
  • the pumping element 11 has a spring 34, which engages on the one hand at a lower portion of the pumping element 11 formed shoulder 35 and on the other hand is provided for support to a stop within the opening of the housing 22.
  • the pumping element 11 is received and anchored either in an opening of the housing 22 by means of a planar and thus rigid or by means of a curved and thus elastically formed profile of the mounting flange 12.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Baugruppe umfassend ein Pumpelement und einen Befestigungsflansch zum Einbau in ein Gehäuse nach der Gattung des Patentanspruchs 1 und ferner von einem Gehäuse für eine derartige Baugruppe.The invention is based on an assembly comprising a pumping element and a mounting flange for installation in a housing according to the preamble of patent claim 1 and also of a housing for such an assembly.

Bei Pumpelementen von Hochdruckpumpen, die zum Einbau in ein Gehäuse, beispielsweise in einen Verbrennungsmotor, vorgesehen sind, ist ein Befestigungsflansch erforderlich, um ein derartiges Pumpelement mit dem Gehäuse dauerhaft zu verbinden. Dazu ist der Außenkörper des Pumpelements und der zugeordnete Befestigungsflansch einstückig als Schmiedeteil ausgeführt. Nachteilig dabei ist, dass die für das entsprechende Schmiedeteil anschließend erforderliche umformende Nachbearbeitung, beispielsweise durch Zerspanen, mit relativ hohen Fertigungskosten verbunden ist.In pumping elements of high-pressure pumps, which are provided for installation in a housing, for example in an internal combustion engine, a mounting flange is required to permanently connect such a pumping element to the housing. For this purpose, the outer body of the pumping element and the associated mounting flange is made in one piece as a forged part. The disadvantage here is that the subsequently required for the corresponding forging forming rework, for example by machining, is associated with relatively high production costs.

Aus der US 2,975,776 ist eine nockengetriebene Flüssigkraftstoffpumpe für eine Brennkraftmaschine bekannt, mit einer Form, die es ermöglicht, dass sie ins Motorgehäuse eingebaut werden kann.From the US 2,975,776 For example, there is known a cam-driven liquid fuel pump for an internal combustion engine having a shape that allows it to be installed in the engine housing.

Aus der DE 10 2008 042 626 A1 ist eine Hochdruck-Kraftstoffpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine bekannt, die ein Pumpengehäuse aufweist, das einen Flansch zur Befestigung an der Brennkraftmaschine umfasst.From the DE 10 2008 042 626 A1 For example, there is known a high pressure fuel pump for a fuel injection system of an internal combustion engine having a pump housing including a flange for attachment to the internal combustion engine.

Aus der EP 2 055 934 A2 ist eine Hochdruckkraftstoffpumpe bekannt, wobei ein Flansch mit dem Pumpengehäuse verschweißt ist.From the EP 2 055 934 A2 a high pressure fuel pump is known, wherein a flange is welded to the pump housing.

Vorteile der ErfindungAdvantages of the invention

Die Baugruppe mit den kennzeichnenden Merkmalen des Patentanspruchs 1 hat den Vorteil, dass im Gegensatz zum Stand der Technik, bei dem der Außenkörper des Pumpelements und der Befestigungsflansch integriert ausgeführt sind, durch die erfindungsgemäß getrennt voneinander erfolgende Fertigung des Pumpelements und des zugeordneten Befestigungsflansches der Außenkörper des Pumpelements kostensenkend als Drehteil aus Stangenmaterial mit geringem Zerspannvolumen fertigbar ist und die Befestigung des Pumpelements mittels des getrennt von dem Außenkörper des Pumpelements ausgebildeten und am Pumpelement montierbaren Befestigungsflansches erfolgt. Vorteilhaft kann dabei der Befestigungsflansch aus einem kostengünstigen und aus einem für die im Betrieb auftretende mechanische Beanspruchung des Befestigungsflansches geeigneten Werkstoff gefertigt werden.The assembly with the characterizing features of claim 1 has the advantage that, in contrast to the prior art, in which the outer body of the pumping element and the mounting flange are designed integrated, by the present invention separately from each other making the pumping element and the associated mounting flange of the outer body of Pumping element cost reducing as a rotating part of rod material with low Zerspannvolumen can be manufactured and the fastening of the pumping element by means of the separately formed from the outer body of the pumping element and mounted on the pumping element mounting flange. Advantageously, the mounting flange can be manufactured from a cost-effective and from a suitable for the mechanical stress occurring during operation of the mounting flange material.

Um das Pumpelement in dem Befestigungsflansch aufzunehmen, weist der Befestigungsflansch eine zentrale Durchgangsöffnung auf, welche im montierten Zustand der Baugruppe einen Kopfbereich des Pumpelements umschließt.In order to receive the pumping element in the mounting flange, the mounting flange has a central passage opening, which encloses a head region of the pumping element in the assembled state of the module.

Zum Befestigen der Baugruppe an einem Gehäuse weist der Befestigungsflansch wenigstens zwei einander symmetrisch bezüglich der zentralen Durchgangsöffnung gegenüberliegende Haltelaschen für Befestigungsmittel an dem Gehäuse auf.To attach the assembly to a housing, the mounting flange has at least two mutually symmetrically with respect to the central passage opening opposite retaining tabs for fastening means on the housing.

Die Erfindung sieht vor, dass am Außenkörper des Pumpelements eine am Außenumfang umlaufende Schulter ausgebildet ist, welche durchmessergrößer als der Kopfbereich ist und den Kopfbereich axial nach unten begrenzt. Dadurch bietet die Schulter des Pumpelements eine Auflagefläche für den in bestimmungsgemäßer Position am Pumpelement montierten Befestigungsflansch.The invention provides that on the outer body of the pumping element a circumferential shoulder on the outer circumference is formed, which is larger in diameter than the head portion and the head portion bounded axially downwards. As a result, the shoulder of the pumping element provides a bearing surface for the mounting flange mounted in the intended position on the pumping element.

Weitere vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung ergeben sich durch die in den Unteransprüchen aufgeführten Maßnahmen.Further advantageous developments and refinements of the invention will become apparent from the measures listed in the dependent claims.

Dabei ist bei einem im Wesentlichen zylinderförmig ausgebildeten Kopfbereich des Pumpelements die zentrale Durchgangsöffnung des Befestigungsflansches kreisförmig ausgebildet.In this case, in the case of a substantially cylindrically shaped head region of the pumping element, the central passage opening of the fastening flange is of circular design.

Eine Ausgestaltung der Erfindung kann darin bestehen, dass die Schulter des Pumpelements bei Einbau in ein Gehäuse mit einem Absatz des Gehäuses zusammenwirkt. In bestimmungsgemäßer Einbaulage der Baugruppe liegt die Schulter des Pumpelements auf dem im Mündungsbereich des Gehäuses ausgebildeten Absatz auf.An embodiment of the invention may consist in that the shoulder of the pumping element when installed in a housing cooperates with a shoulder of the housing. In the intended installation position of the module, the shoulder of the pumping element rests on the shoulder formed in the mouth region of the housing.

Eine bevorzugte Ausgestaltung der Erfindung besteht darin, dass das Pumpelement eine Feder aufweist, die einerseits an einem im unteren Bereich des Pumpelements ausgebildeten Absatz angreift und andererseits zur Abstützung an einem Anschlag innerhalb der Öffnung des Gehäuses vorgesehen ist. Die von der Feder erzeugte Axialkraft wirkt nach oben und presst das Pumpelement gegen den Befestigungsflansch.A preferred embodiment of the invention is that the pumping element comprises a spring, which acts on the one hand on a formed in the lower region of the pumping element paragraph and on the other hand is provided for support on a stop within the opening of the housing. The axial force generated by the spring acts upwards and presses the pumping element against the mounting flange.

Eine Ausführungsvariante der Erfindung besteht darin, dass der Befestigungsflansch auf der Schulter des Pumpelements plan aufliegt. Dadurch fungiert der Befestigungsflansch als starres Element, welches das Pumpelement in axialer Richtung fixiert.An embodiment of the invention is that the mounting flange rests flat on the shoulder of the pumping element. As a result, the mounting flange acts as a rigid element, which fixes the pumping element in the axial direction.

Eine bevorzugte und besonders vorteilhafte Ausführungsvariante der Erfindung, bei welcher der Befestigungsflansch elastisch als Federelement oder Biegeelement ausgelegt ist, besteht hingegen darin, dass der Befestigungsflansch von der Schulter weggewölbt ist. Dabei ist die Wölbung zwischen der Mittelachse des Pumpelements und dem Ort der Befestigung des Befestigungsflansches am Gehäuse ausgebildet. Durch Verstellen der die Haltelaschen durchdringenden Befestigungsmittel ist eine Verbiegung der Wölbung bei damit korrespondierendem Verengen eines von der Verbiegung abhängigen axialen Abstands zwischen Haltelaschen und Gehäuse am Befestigungsort derart bewirkbar, dass der Befestigungsflansch eine einstellbare Vorspannkraft auf das Pumpelement ausübt. Die Vorspannkraft kann somit bei dieser Ausführungsvariante abhängig von dem Druck, den das Pumpelement im Betrieb erzeugt, eingestellt werden und zwar über die Biegung des Befestigungsflansches. Aufgrund der Biegung des Befestigungsflansches wird eine relativ einfache Montage der Baugruppe ermöglicht. Zudem übt der Befestigungsflansch als Federelement bzw. Biegeelement eine nach unten wirkende Axialkraft aus, so dass der Befestigungsflansch gegen die Schulter des Pumpelements drückt. Vorteilhaft lassen sich dadurch Bauteiltoleranzen in Axialrichtung ausgleichen. Gemäß einer zweckmäßigen Weiterbildung ist der Befestigungsflansch aus Bandmaterial gebildet, wobei einzelne Lamellen des Bandmaterials übereinander geschichtet sind.A preferred and particularly advantageous embodiment of the invention, in which the mounting flange is designed elastically as a spring element or bending element, however, is that the mounting flange is curved away from the shoulder. The curvature between the central axis of the pumping element and the location of attachment of the mounting flange is formed on the housing. By adjusting the securing means penetrating the retaining tabs, bending of the arching is possible with corresponding constriction of an axial distance between retaining tabs and housing at the mounting location which is dependent on the bending, such that the mounting flange exerts an adjustable biasing force on the pumping element. The biasing force can thus be adjusted in this embodiment, depending on the pressure generated by the pumping element during operation, and indeed via the bending of the mounting flange. Due to the bending of the mounting flange, a relatively simple assembly of the assembly is made possible. In addition, the mounting flange exerts as a spring element or bending element from a downward axial force, so that the mounting flange presses against the shoulder of the pumping element. Advantageously, component tolerances in the axial direction can thereby be compensated. According to an expedient development of the mounting flange is formed of strip material, wherein individual lamellae of the strip material are stacked one above the other.

Um die Baugruppe an dem Gehäuse dauerhaft zu verankern, weist jede Haltelasche wenigstens eine Durchgangsbohrung zur Aufnahme eines jeweils zugeordneten Befestigungsmittels auf. Zweckmäßigerweise sind die Befestigungsmittel als Schrauben ausgebildet und in entsprechenden Bohrungen in einer Außenseite des Gehäuses verankerbar.To permanently anchor the assembly to the housing, each retaining tab has at least one through hole for receiving a respective associated fastener. Conveniently, the fastening means are designed as screws and anchored in corresponding holes in an outer side of the housing.

Gemäß einer zweckmäßigen Ausgestaltung der Erfindung ist zur Abstützung des Pumpelements in der Gehäuseöffnung vorgesehen, dass die Schulter und der Absatz jeweils einen daran radial umlaufenden Dichtring tragen. Bauliche Toleranzen können dadurch ausgeglichen werden, so dass das Pumpelement dicht in der Gehäuseöffnung aufgenommen ist.According to an expedient embodiment of the invention, it is provided for supporting the pumping element in the housing opening, that the shoulder and the heel each carry a radially encircling sealing ring. Structural tolerances can be compensated thereby, so that the pumping element is received tightly in the housing opening.

Zeichnungendrawings

Ausführungsbeispiele der Erfindung sind in der nachfolgenden Beschreibung und in den beigefügten Zeichnungen näher erläutert. Letztere zeigen in schematisch gehaltenen Ansichten.

  • Fig. 1 einen Längsschnitt durch eine Baugruppe, welche ein Pumpelement und einen das Pumpelement aufnehmenden Befestigungsflansch umfasst, wobei der linksseitige Teil von Fig. 1 eine erste Ausführungsform des Befestigungsflansches zeigt, während der rechtsseitige Teil eine zweite Ausführungsform des Befestigungsflansches zeigt,
  • Fig. 2 einen Querschnitt durch einen Kopfbereich des Pumpelements von Fig. 1 gemäß der ersten Ausführungsform, wobei eine angeschnittene Seite am Kopfbereich als Schlüsselfläche zum Festlegen einer Winkelposition des Pumpelements dient, und
  • Fig. 3 eine Draufsicht auf die in einem Gehäuse eingebaute Baugruppe gemäß der zweiten Ausführungsform.
Embodiments of the invention are explained in more detail in the following description and in the accompanying drawings. The latter show in schematic views.
  • Fig. 1 a longitudinal section through an assembly comprising a pumping element and the pumping element receiving mounting flange, wherein the left-side part of Fig. 1 shows a first embodiment of the mounting flange, while the right-hand part shows a second embodiment of the mounting flange,
  • Fig. 2 a cross section through a head portion of the pumping element of Fig. 1 according to the first embodiment, wherein a truncated side at the head portion serves as a key surface for fixing an angular position of the pumping element, and
  • Fig. 3 a plan view of the built-in a housing assembly according to the second embodiment.

Beschreibung der AusführungsformenDescription of the embodiments

Fig. 1 zeigt in einer Längsschnittansicht eine in ihrer Gesamtheit mit 10 bezeichnete erfindungsgemäße Baugruppe, welche ein Pumpelement 11 und einen das Pumpelement aufnehmenden Befestigungsflansch 12 umfasst. Dabei zeigt die linksseitige Hälfte von Fig. 1 eine erste Ausführungsform des Befestigungsflansches 12, der im Profil plan ausgebildet ist und somit plan auf der Außenseite eines Gehäuses 22 aufliegt, während die rechtsseitige Hälfte von Fig. 1 eine zweite Ausführungsform des Befestigungsflansches 12 zeigt, der im Profil gebogen bzw. gewölbt ausgebildet ist. Die Baugruppe 10 ist zum Einbau in ein Gehäuse geeignet. Im bestimmungsgemäß zusammengesetzten Zustand der Baugruppe 10 umgreift bei beiden Ausführungsformen der Befestigungsflansch 12 mit einer mittig ausgebildeten Durchgangsöffnung 50 den Kopfbereich 21 des Pumpelements 11, das in den Figuren im Wesentlichen anhand seines Außenkörpers dargestellt ist. Dazu ist die Durchgangsöffnung 50 des Befestigungsflansches 12 kreisförmig ausgebildet, wobei deren Durchmesser etwa dem Durchmesser des zylinderförmigen Kopfbereichs 21 des Pumpelements 11 entspricht. Zur Befestigung des Befestigungsflansches 12 an einer Anlageseite 27 des Gehäuses 22 weist der Befestigungsflansch 12 zwei einander symmetrisch bezüglich der Längsmittelachse 24 gegenüberliegend angeordnete Haltelaschen 37 mit zwei Durchgangsbohrungen 23 auf, welche symmetrisch zur Längsmittelachse 24 einander gegenüberliegend angeordnet sind und jeweils eine Schraube 25 darin aufnehmen, mit denen der Befestigungsflansch 12 in zwei Sacklochbohrungen 26 verankerbar ist, welche korrespondierend zur Anordnung der Durchgangsbohrungen 23 an der Anlageseite 27 des Gehäuses 22 ausgebildet sind. Das Pumpelement 11 ist in einer Gehäuseöffnung 28 des Gehäuses 22 aufgenommen. Mittels eines am Außenumfang einer Schulter 30 des Pumpelements 11 umlaufenden Nut aufgenommenen Dichtrings 31 stützt sich das Pumpelement 11 im Mündungsbereich der Gehäuseöffnung 28 ab und mittels eines zweiten dazu axial beabstandeten Dichtrings 32 stützt sich das Pumpelement 11 mit seinem unteren Bereich in der Gehäuseöffnung 28 ab. Fig. 1 shows in a longitudinal sectional view of an assembly according to the invention designated in its entirety by 10, which comprises a pumping element 11 and a pumping element receiving mounting flange 12. This shows the left half of Fig. 1 a first embodiment of the mounting flange 12 which is flat in profile and thus rests flat on the outside of a housing 22, while the right-side half of Fig. 1 shows a second embodiment of the mounting flange 12, which is curved or arched in profile. The assembly 10 is suitable for installation in a housing. In the intended assembled state of the assembly 10 surrounds in both embodiments of the mounting flange 12 with a centrally formed through hole 50, the head portion 21 of the pumping element 11, which is shown in the figures essentially on the basis of its outer body. For this purpose, the passage opening 50 of the mounting flange 12 is circular, wherein the diameter thereof corresponds approximately to the diameter of the cylindrical head portion 21 of the pumping element 11. For attachment of the mounting flange 12 on an abutment side 27 of the housing 22, the mounting flange 12 has two symmetrically with respect to the longitudinal central axis 24 oppositely arranged retaining tabs 37 with two through holes 23 which are arranged symmetrically to the longitudinal center axis 24 opposite each other and each receive a screw 25 therein with which the mounting flange 12 can be anchored in two blind holes 26 which are formed corresponding to the arrangement of the through holes 23 on the abutment side 27 of the housing 22. The Pumping element 11 is accommodated in a housing opening 28 of the housing 22. By means of a sealing ring 31 received on the outer circumference of a shoulder 30 of the pumping element 11, the pumping element 11 is supported in the mouth region of the housing opening 28 and by means of a second sealing ring 32 axially spaced therefrom, the pumping element 11 is supported with its lower region in the housing opening 28.

Die erste Ausführungsform gemäß der linksseitigen Darstellung von Fig.1 ist dadurch charakterisiert, dass der Befestigungsflansch 12 ein ebenes Profil aufweist und somit der Befestigungsflansch plan auf der Schulter 30 des Pumpelements 11 aufliegt, wobei die Durchgangsöffnung den sich von der Schulter 30 axial nach oben wegerstreckenden durchmesserkleineren Kopfbereich 21 umschließt. Dabei ist in bestimmungsgemäßer Einbaulage der Baugruppe 10 das Pumpelement 11 soweit in der Öffnung des Gehäuses 22 versenkt, dass bei dieser Ausführungsform die dem Kopfbereich 21 zugewandte Oberseite der Schulter 30 mit der Anlageseite 27 des Gehäuses 22 fluchtet. Um dem Pumpelement 11 axialen Halt gegenüber dem Befestigungsflansch 12 zu vermitteln, ist eine Feder 34 im unteren Bereich des Pumpelements 11 vorgesehen, welche sich einerseits am - in der Figur nicht dargestellten - Boden oder auch einem Absatz der Gehäuseöffnung und andererseits an einem den zweiten Dichtring tragenden Absatz 35 abstützt und dadurch eine axial nach oben wirkende Vertikalkraft erzeugt, mit der die Schulter 30 des Pumpelements 11 in Anschlag an die Unterseite des Befestigungsflansches 12 gestellt wird. In dieser Lage ist der Befestigungsflansch 12 mittels der in den Sacklochbohrungen 26 des Gehäuses 22 eingreifenden Schrauben 25 derart an der Anlageseite 27 des Gehäuses verankert, dass die Unterseite des Befestigungsflansches bündig an der Anlageseite 27 anliegt. Die von der Feder 34 erzeugte Vertikalkraft verhindert eine Axialverschiebung des Pumpelements nach unten innerhalb der Gehäuseöffnung.The first embodiment according to the left-side representation of Fig.1 is characterized in that the mounting flange 12 has a planar profile and thus the mounting flange rests flat on the shoulder 30 of the pumping element 11, wherein the through-hole encloses the smaller-diameter head portion 21 axially extending away from the shoulder 30. In this case, in the intended installation position of the assembly 10, the pump element 11 sunk so far into the opening of the housing 22, that in this embodiment, the head portion 21 facing top of the shoulder 30 is aligned with the contact side 27 of the housing 22. In order to give the pumping element 11 axial hold relative to the mounting flange 12, a spring 34 is provided in the lower region of the pumping element 11, which on the one hand on - not shown in the figure - bottom or a shoulder of the housing opening and on the other hand on a second sealing ring supporting shoulder 35 and thereby generates an axially upward vertical force acting, with which the shoulder 30 of the pumping element 11 is placed in abutment against the underside of the mounting flange 12. In this position, the mounting flange 12 is anchored by means of engaging in the blind holes 26 of the housing 22 screws 25 on the contact side 27 of the housing, that the bottom of the mounting flange is flush with the contact side 27. The vertical force generated by the spring 34 prevents axial displacement of the pumping element downwardly within the housing opening.

Die zweite Ausführungsform gemäß der rechtsseitigen Darstellung von Fig. 1 ist dadurch charakterisiert, dass der Befestigungsflansch 12 eine Wölbung bzw. ein gewölbtes Profil aufweist, das symmetrisch zur Längsmittelachse 24 der Baugruppe 10 verläuft. Dabei ist das Profil im Wesentlichen wannenartig gewölbt, wobei der zentrale Bereich mittig auf der Schulter 30 des Pumpelements 11 aufliegt, während der außermittige Bereich nach oben hochgewölbt ist und dadurch von der Schulter 30 und von der Anlageseite 27 axial wegsteht bzw. beabstandet ist. Die innenseitig des Befestigungsflansches 12 ausgebildete Durchgangsöffnung 50, mit welcher der Befestigungsflansch 12 den Kopfbereich 21 des Pumpelements 11 umschließt, folgt mithin dem gewölbten Profil, d.h. die Durchgangsöffnung des Befestigungsflansches 12 erstreckt sich nicht innerhalb einer definierbaren Ebene. Die einander symmetrisch bezüglich der Längsmittelachse 24 und des zentralen Bereichs gegenüberliegend angeordneten Haltelaschen 37 bilden den außermittigen und hochgewölbte Randbereich des Befestigungsflansches 12 ist, wobei jede Haltelasche jeweils mit einer Durchgangsbohrung 23 zur Aufnahme einer jeweiligen Schraube 25 versehen ist, wodurch der Befestigungsflansch 12 in den entsprechenden Sacklochbohrungen 26 im Gehäuse 22 verankerbar ist. Aufgrund des gewölbten Profils und der diesem innewohnenden Federkraft ist es möglich, durch Verstellen der Schrauben 25 unter Überwindung der Federkraft eine entsprechend veränderbare Verbiegung des gewölbten Flanschprofils zu erzeugen, wodurch eine einstellbare und axial nach unten wirkende Vorspannkraft zwischen dem Befestigungsflansch 12, der Schulter 30 des Pumpelements 11 und dem Gehäuse 22 erzeugt wird. Indem die Schulter 30 des Pumpelements 11 gemäß der zweiten Ausführungsform einen größeren Durchmesser als jene der ersten Ausführungsform aufweist und der Mündungsbereich der Gehäuseöffnung durchmessergrößer als der axial darunterliegende Bereich ausgebildet ist, liegt die Unterseite der Schulter 30, welche gemäß der zweiten Ausführungsform als Durchmesserverbreiterung 33 ausgebildet ist, auf dem dadurch in der Nähe der Mündung gebildeten Absatz 38 in der Gehäuseöffnung auf. Dabei liegt der erste Dichtring 31 in der Schulter 30 dichtend am Innenumfang der Gehäuseöffnung im Bereich der Mündung oberhalb des Absatzes 38 an. Zusätzlich wird von der im unteren Bereich des Pumpelements 11 an dem dort ausgebildeten Absatz 35 mit ihrem einen Ende angreifenden Feder 34, welche sich mit ihrem anderen Ende in der Öffnung des Gehäuses an einem Wandungsabschnitt wie beispielsweise einem Boden oder einem Absatz oder an einem tiefer in der Gehäuseöffnung gelagerten und mit dem Pumpelement koppelbaren Bauteil wie beispielsweise einer Welle abstützt, eine axiale Vertikalkraft nach oben erzeugt, welche die Schulter 30 des Pumpelements 11 gegen die Unterseite des Befestigungsflansches 12 in dessen mittig an der Schulter 30 anliegenden zentralen Abschnitt presst. Indem der Befestigungsflansch bei dieser Ausführungsform als Biegeelement bzw. Biegebalken ausgeführt ist, sind axiale Bauteiltoleranzen ausgleichbar.The second embodiment according to the right side representation of Fig. 1 is characterized in that the mounting flange 12 has a curvature or a curved profile which extends symmetrically to the longitudinal central axis 24 of the assembly 10. In this case, the profile is substantially curved like a trough, wherein the central region rests centrally on the shoulder 30 of the pumping element 11, while the off-center region is upwardly arched and thereby protrudes axially away from the shoulder 30 and the abutment side 27 and is spaced. The inside of the mounting flange 12 formed through opening 50, with which the mounting flange 12, the head portion 21 of the pumping element 11th encloses, therefore follows the curved profile, ie the passage opening of the mounting flange 12 does not extend within a definable plane. The holding tabs 37 disposed opposite one another symmetrically with respect to the longitudinal central axis 24 and the central area form the off-center and high-arched edge region of the fastening flange 12, each retaining tab being respectively provided with a through-bore 23 for receiving a respective screw 25, whereby the fastening flange 12 is inserted into the corresponding one Blind holes 26 in the housing 22 can be anchored. Due to the curved profile and this inherent spring force, it is possible by adjusting the screws 25 overcoming the spring force to produce a correspondingly variable deflection of the curved flange profile, whereby an adjustable and axially downward biasing force between the mounting flange 12, the shoulder 30 of the Pumping element 11 and the housing 22 is generated. In that the shoulder 30 of the pumping element 11 according to the second embodiment has a larger diameter than that of the first embodiment and the mouth area of the housing opening is larger than the axially lower area, the underside of the shoulder 30, which according to the second embodiment is formed as a diameter broadening 33 is on the thus formed in the vicinity of the mouth paragraph 38 in the housing opening. In this case, the first sealing ring 31 is in the shoulder 30 sealingly on the inner circumference of the housing opening in the region of the mouth above the shoulder 38 at. In addition, of the in the lower part of the pumping element 11 at the formed there paragraph 35 with its one end acting spring 34, which at its other end in the opening of the housing to a wall portion such as a floor or a paragraph or at a deeper in the housing opening mounted and coupled to the pumping element component such as a shaft supports, generates an axial vertical force upwards, which presses the shoulder 30 of the pumping element 11 against the underside of the mounting flange 12 in the center of the shoulder 30 adjacent central portion. By the mounting flange is designed in this embodiment as a bending element or bending beam, axial component tolerances are compensated.

Der Befestigungsflansch 12 ist bevorzugt aus Bandmaterial gebildet und kann aus lamellenartig übereinander geschichteten Einzelelementen gebildet sein, die jeweils aus dem Bandmaterial geformt sind, wobei die Einzelelemente kostengünstig als Stanzteile ausgeführt sein können.The mounting flange 12 is preferably formed from strip material and may be formed of lamellar superimposed individual elements, which are each formed from the strip material, wherein the individual elements can be inexpensively designed as stampings.

Fig. 2 zeigt einen Querschnitt durch das Pumpelement 11 gemäß der ersten Ausführungsform, wobei eine Schlüsselfläche 40 am Kopfbereich des Pumpelements 11 vorgesehen ist, die dazu dient, eine Winkelposition des Pumpelements 11 festzulegen. Fig. 2 shows a cross section through the pumping element 11 according to the first embodiment, wherein a key surface 40 is provided on the head portion of the pumping element 11, which serves to define an angular position of the pumping element 11.

Fig. 3 veranschaulicht in einer Draufsicht die in einem Gehäuse 22 eingebaute Baugruppe 10 gemäß der zweiten Ausführungsform. Dabei ragt der Kopfbereich 21 des Pumpelements 11 aus der zentralen Durchgangsöffnung 50 des Befestigungsflansches 12 heraus und die die Haltelaschen 37 durchgreifenden Schrauben 25 fixieren den Befestigungsflansch 12 an dem Gehäuse 22. Um Gewicht zu sparen, weist der Befestigungsflansch 12 mit den einander symmetrisch gegenüberliegenden Haltelaschen 37 eine ovale bzw. elliptische Form auf. Fig. 3 illustrates in a plan view of the built-in housing 22 assembly 10 according to the second embodiment. In this case, the head portion 21 of the pumping element 11 protrudes from the central through hole 50 of the mounting flange 12 and the retaining tabs 37 by cross-screws 25 fix the mounting flange 12 to the housing 22. To save weight, has the mounting flange 12 with the symmetrically opposed retaining tabs 37th an oval or elliptical shape.

Zusammenfassend ist bei einer Baugruppe 10, die ein Pumpelement 11 und einen Befestigungsflansch 12 zum Einbau in ein Gehäuse umfasst, erfindungsgemäß vorgesehen, dass das Pumpelement 11 und der Befestigungsflansch 12 der Baugruppe 10 getrennt voneinander ausgeführt sind. Der Befestigungsflansch 12 weist eine zentrale Durchgangsöffnung 50 auf, welche im montierten Zustand der Baugruppe 10 einen Kopfbereich 21 des Pumpelements 11 umschließt und ferner wenigstens zwei einander symmetrisch bezüglich der zentralen Durchgangsöffnung gegenüberliegende Haltelaschen 37 für Befestigungsmittel an dem Gehäuse 22. Das Pumpelement 11 weist eine Feder 34 auf, die einerseits an einem unteren Bereich des Pumpelements 11 ausgebildeten Absatz 35 angreift und andererseits zur Abstützung an einem Anschlag innerhalb der Öffnung des Gehäuses 22 vorgesehen ist. Das Pumpelement 11 ist entweder mittels eines planen und somit starren oder mittels eines gewölbten und mithin elastisch ausgebildeten Profils des Befestigungsflanschs 12 in einer Öffnung des Gehäuses 22 aufgenommen und verankert.In summary, in the case of an assembly 10 which comprises a pumping element 11 and a fastening flange 12 for installation in a housing, the invention provides for the pumping element 11 and the fastening flange 12 of the assembly 10 to be designed separately from one another. The mounting flange 12 has a central passage opening 50, which encloses a head portion 21 of the pumping element 11 in the assembled state of the assembly 10 and further at least two mutually symmetrically with respect to the central passage opening retaining tabs 37 for fastening means on the housing 22. The pumping element 11 has a spring 34, which engages on the one hand at a lower portion of the pumping element 11 formed shoulder 35 and on the other hand is provided for support to a stop within the opening of the housing 22. The pumping element 11 is received and anchored either in an opening of the housing 22 by means of a planar and thus rigid or by means of a curved and thus elastically formed profile of the mounting flange 12.

Claims (9)

  1. Assembly (10) comprising a pump element (11) and a fastening flange (12) for installation in a housing (22), wherein the fastening flange (12) has a central through-opening which, in the mounted state of the assembly (10), encloses a head region (21) of the pump element (11), characterized in that the pump element (11) and the fastening flange (12) of the assembly (10) are configured separately from one another, in that the fastening flange (12) has at least two retaining tabs (37) for fastening means (25) on the housing (22), said retaining tabs being symmetrically opposite to one another with respect to the central through-opening, in that a shoulder (30) which extends around on the outer circumference is formed on the outer body of the pump element (11), is of larger diameter than the head region (21) and axially downwardly delimits the head region (21), in that the fastening flange (12) is curved away from the shoulder (30), in that the curvature is formed between the centre axis (24) of the pump element (11) and the location where the fastening flange (12) is fastened to the housing (22), and in that, by adjusting the fastening means (25) passing through the retaining tabs (37), bending of the curvature with corresponding narrowing of an axial distance, which is dependent on the bending, between retaining tabs (37) and housing (22) at the fastening location can be effected in such a way that the fastening flange (12) exerts an adjustable preloading force on the pump element (11) .
  2. Assembly according to Claim 1, characterized in that the central through-opening is circular, whereas the head region (21) of the pump element (11) is substantially cylindrical.
  3. Assembly according to Claim 1 or 2, characterized in that, upon installation in a housing (22), the shoulder (30) of the pump element (11) as a diameter widening (33) interacts with a ledge (38) of the housing (22).
  4. Assembly according to one of the preceding claims, characterized in that the pump element (11) has a spring (34) which acts, on the one hand, on a ledge (35) which is formed in the lower region of the pump element (11) and is provided, on the other hand, for supporting on a stop within the opening of the housing (22).
  5. Assembly according to one of the preceding claims, characterized in that the fastening flange (12) lies flat on the shoulder (30).
  6. Assembly according to one of the preceding claims, characterized in that the fastening flange (12) is formed from strip material, wherein individual elements formed in the manner of lamellae from the strip material are layered above one another.
  7. Assembly according to one of the preceding claims, characterized in that each retaining tab (37) has at least one through-hole (23) for accommodating a respectively assigned fastening means (25).
  8. Assembly according to one of the preceding claims, characterized in that the fastening means (25) take the form of screws and can be anchored in corresponding holes (26) in an outer side of the housing (22).
  9. Assembly according to one of Claims 4 to 8, characterized in that the shoulder (30) and the ledge (35) each bear a sealing ring (31, 32) which extends around radially thereon.
EP13815776.3A 2013-02-18 2013-12-27 Assembly comprising a pump element and a fixing flange Active EP2956667B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310202569 DE102013202569A1 (en) 2013-02-18 2013-02-18 Assembly comprising pumping element and mounting flange
PCT/EP2013/078046 WO2014124720A1 (en) 2013-02-18 2013-12-27 Assembly comprising a pump element and a fastening flange

Publications (2)

Publication Number Publication Date
EP2956667A1 EP2956667A1 (en) 2015-12-23
EP2956667B1 true EP2956667B1 (en) 2019-02-27

Family

ID=49917095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13815776.3A Active EP2956667B1 (en) 2013-02-18 2013-12-27 Assembly comprising a pump element and a fixing flange

Country Status (4)

Country Link
EP (1) EP2956667B1 (en)
CN (1) CN104995404B (en)
DE (1) DE102013202569A1 (en)
WO (1) WO2014124720A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206459B3 (en) * 2016-04-18 2017-10-05 Continental Automotive Gmbh Combination comprising a housing and a flange, and arrangement
DE102016217409A1 (en) * 2016-09-13 2018-03-15 Robert Bosch Gmbh High-pressure fuel pump
EP3578801B1 (en) * 2018-06-06 2021-11-10 Delphi Technologies IP Limited Fuel pump assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975776A (en) * 1958-03-20 1961-03-21 Cav Ltd Liquid fuel pumps of rinternal combustion engines
US3759637A (en) * 1971-12-16 1973-09-18 Sigma Injection pumps
JPS597266U (en) * 1982-07-06 1984-01-18 株式会社ボッシュオートモーティブ　システム fuel injection pump
JP5039507B2 (en) * 2007-10-31 2012-10-03 日立オートモティブシステムズ株式会社 High pressure fuel supply pump and method of manufacturing the same
DE102008042626A1 (en) * 2008-05-29 2009-12-03 Robert Bosch Gmbh High-pressure fuel pump
CN102116308B (en) * 2011-04-13 2012-08-29 襄樊五二五泵业有限公司 Adjustable mechanical sealing structure for pump

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
DE102013202569A1 (en) 2014-08-21
CN104995404B (en) 2017-08-01
CN104995404A (en) 2015-10-21
EP2956667A1 (en) 2015-12-23
WO2014124720A1 (en) 2014-08-21

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