EP2494181B1 - Device for delivering fuel - Google Patents

Device for delivering fuel Download PDF

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Publication number
EP2494181B1
EP2494181B1 EP20100754718 EP10754718A EP2494181B1 EP 2494181 B1 EP2494181 B1 EP 2494181B1 EP 20100754718 EP20100754718 EP 20100754718 EP 10754718 A EP10754718 A EP 10754718A EP 2494181 B1 EP2494181 B1 EP 2494181B1
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EP
European Patent Office
Prior art keywords
holder
receptacle
shaped
spring portion
damping element
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EP20100754718
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German (de)
French (fr)
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EP2494181A1 (en
Inventor
Martin Beyer
Eugen Martin
Hans-Peter Braun
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2494181A1 publication Critical patent/EP2494181A1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • F02M37/10Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/103Mounting pumps on fuel tanks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • F02M37/10Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85978With pump
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85978With pump
    • Y10T137/86091Resiliently mounted pump

Definitions

  • the invention relates to a device for conveying fuel according to the preamble of the main claim.
  • the damping elements dampen the transmission of structure-borne noise from the delivery unit to the adjacent components.
  • the damping elements each have a Kragabites, which protrudes from the receptacle starting in the region of the holder and thereby extends in the radial direction and in the circumferential direction.
  • the Kragabitese are designed as elastic spring arms whose axial deflection with respect to a pump axis by external acceleration forces can exceed a maximum allowable value. The case occurring in the spring arms mechanical stresses can cause damage to Federanne.
  • Another example of a device for conveying fuel is from the EP-1431 566 known.
  • the device according to the invention with the characterizing features of the main claim has the advantage that the damping elements in axial deflection have a strong progressive spring characteristic, so that with increasing travel of the pump holder, a progressively increasing spring force in the damping element. This reduces the axial deflection of the pump holder over the prior art.
  • the spring portion is meandering, U-shaped, V-shaped, W-shaped or S-shaped.
  • the spring section is connected to the holder at one end and to the cantilever section at the other end, since good acoustic decoupling is also achieved according to this alternative.
  • the receptacle and the holder are arranged concentrically to one another, wherein a gap is provided between the receptacle and the holder. In this way, a swinging relative movement of the receptacle relative to the holder is possible, which is damped by the damping elements.
  • the receptacle protrudes in the axial direction with respect to a pump axis over the holder, since the damping elements can be arranged in this way space-saving close to the periphery of the receptacle.
  • the damping elements are supported at the delivery unit directed towards radial stress on the recording.
  • a shoulder is provided on the cantilever section of the receptacle or on the circumference of the receptacle, which shoulder is axially movable between two stop edges of the mount, since in this way a limitation of the axial deflection of the receptacle in both directions is achieved that damage to the damping elements is effectively prevented.
  • Fig.1 shows a first embodiment of the device according to the invention.
  • the device for conveying fuel is arranged in a fuel tank 1 and conveyed by means of a delivery unit 2, for example an electric fuel pump, fuel from the fuel tank 1 druckerhöht via a pressure line 3 to an internal combustion engine 4.
  • the delivery unit 2 is arranged for example in a storage container 5, the for the delivery unit 2 sufficient fuel holds so that it can suck fuel even at low levels in the fuel tank 1 and when accelerating, braking, cornering and / or driving uphill.
  • the delivery unit 2 is held by a pump holder 8, which comprises a receptacle 9 for the delivery unit 2 and a holder 11 connected to the receptacle 9 via damping elements 10.
  • the delivery unit 2 is fixed in the receptacle 9 in the axial direction with respect to an axis 2.1 of the delivery unit 2, for example by means of a pressing.
  • the damping elements 10 each have a Kragabites 12, which projects from the receptacle 9, starting in the region of the holder 11.
  • the Kragabites 12 is for example web-shaped and rigid in the axial direction. At least two, for example three or more damping elements 10 are provided, which are distributed over the circumference.
  • the damping elements 10 allow an axial and radial oscillation movement of the receptacle 9 with the delivery unit 2 arranged therein.
  • the invention provides that on the Kragabites 12 of the damping element 10, an elastic spring portion 15 connects, with his Longitudinal extent in the axial direction and in the circumferential direction with respect to the axis 2.1 extends and is connected to the bracket 11.
  • the spring portion 15 extends close to the circumference of the receptacle 9 or the delivery unit. 2
  • damping elements 10 are achieved, which have a strongly progressive spring characteristic at axial deflection of the receptacle 9, so that initially a soft suspension takes place, but with increasing spring travel of the pump holder 8, a progressively increasing spring force in the damping element 10 is formed.
  • the axial deflection of the pump holder 8 is reduced compared to the prior art.
  • the spring portion 15 is web-shaped, bending beam-shaped or featherarmfönnig executed and extends for example meandering, U-shaped, V-shaped, W-shaped or S-shaped.
  • the spring portion 15 is W-shaped, which is connected at its two ends 16 to the holder 11 and at its central or central bulge 17 with the Kragabites 12 of the receptacle 9.
  • the bulge 17 is bulged in the first embodiment and thereby formed omega-shaped.
  • the spring portion 15 according to the first embodiment is designed, for example, such that the opposing legs of the bulge 17 7 to move towards each other after an upward stroke of the receptacle 9 and finally abut each other at its narrowest point, whereby the stiffness of the damping element 10 for a further upward stroke increases and a progressively increasing spring force in the damping element 10 is achieved. In a downward stroke of the receptacle 9, for example, no progressively increasing spring force is provided in the damping element 10, but could of course be executed.
  • W-shape could also be provided an S-shape, wherein the one end 16 is connected to the Kragabrough 12 and the other end 16 to the bracket 11.
  • the receptacle 9, the damping element 10, the damping element 10 are made with the support portion 12 and the spring portion 15 in an injection molding tool by injection molding of plastic, whereby the spring portion 15 with the cantilever portion 12 and the bracket 11 is integrally connected.
  • the receptacle 9 and the holder 11 are arranged concentrically with each other, wherein between the receptacle 9 and the holder 11, a gap 18 is provided.
  • the recording 9 and the holder 11 are designed, for example, annular, wherein the receptacle 9 can protrude in the axial direction with respect to the axis 2.1 on the holder 11.
  • the axial deflection of the receptacle 9 is limited in the first embodiment in both axial directions.
  • the Kragabites 12 projects into a recess 20 of the holder 11, wherein on the Kragabites 12 a cooperating with the recess 20 shoulder 21 is formed, which is movable in the axial direction between two stop edges 22,23 of the recess 20.
  • the shoulder 21 is provided, for example, on both sides of the Kragabites 12, so that a T-shape or cross-shape of the Kragabites 12 is formed.
  • the stop edges 22, 23 can also be realized in a different way than through the recess 20 on the holder 11.
  • the pump holder 8 is attached, for example, by means of holding means 26 to the storage container 5, but can of course also be attached to other locations in the fuel tank 1.
  • Fig.2 shows a sectional view of the device according to Fig.1 .
  • Figure 3 shows a second embodiment of the device according to the invention.
  • the second embodiment differs from the first embodiment in that the spring portion 15 is not connected at its one end 16 with the holder 11, but with the Kragabites 12 of the receptacle 9.
  • the other end 16 is connected to the bracket 11 as in the first embodiment.
  • the spring portion 15 is W-shaped as in the first embodiment.
  • the central or central bulge 17 differs from the first embodiment in that it is not coupled directly to the cantilever section 12, but is freely movable by elastic bending and tapers upwards, ie towards the closed side.
  • each Kragabites 12 starting two damping elements 10 to the holder 11, wherein the spring portions 15 of the two damping elements 10 extend in the opposite circumferential direction.
  • the holder 11 is for example part of a lid which is fixed to the storage container 5.
  • Figure 4 shows a partial sectional view of the device according to Figure 3 .
  • the axial deflection of the receptacle 9 is limited in the second embodiment in both axial directions.
  • the shoulder 21 is not provided on the Kragabschnitt 12 of the receptacle 9, but on the circumference of the receptacle 9 and cooperates with two stop edges 22,23 of the holder 11.
  • the shoulder 21 is formed for example by a arranged on the receptacle 9 ring 28, which may be provided as a separate part or in one piece on the receptacle 9. Instead of a ring 28 and a plurality of individual shoulders 21 may be executed.
  • the ring 28 may, for example as a metal ring, also have the function to fix the delivery unit 2 in the receptacle 9 by pressing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Springs (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung zum Fördern von Kraftstoff nach der Gattung des Hauptanspruchs.The invention relates to a device for conveying fuel according to the preamble of the main claim.

Es ist schon eine Vorrichtung zum Fördern von Kraftstoff aus der DE 43 36 574 A1 bekannt, mit einem Förderaggregat und einem das Förderaggregat haltenden Pumpenhalter, der eine Aufnahme für das Förderaggregat und eine über drei Dämpfungselemente mit der Aufnahme verbundene Halterung aufweist. Die Dämpfungselemente dämpfen die Körperschallübertragung von dem Förderaggregat auf die angrenzenden Bauteile. Die Dämpfungselemente haben jeweils einen Kragabschnitt, der von der Aufnahme ausgehend bis in den Bereich der Halterung auskragt und dabei in radialer Richtung und in Umfangsrichtung verläuft. Die Kragabschnitte sind als elastische Federarme ausgeführt, deren axiale Auslenkung bezüglich einer Pumpenachse durch äußere Beschleunigungskräfte einen maximal zulässigen Wert überschreiten kann. Die dabei in den Federarmen auftretenden mechanischen Belastungen können zur Beschädigung der Federanne führen.There is already a device for pumping fuel out of the DE 43 36 574 A1 known, with a delivery unit and the delivery unit holding the pump holder having a receptacle for the delivery unit and a connected via three damping elements with the receptacle holder. The damping elements dampen the transmission of structure-borne noise from the delivery unit to the adjacent components. The damping elements each have a Kragabschnitt, which protrudes from the receptacle starting in the region of the holder and thereby extends in the radial direction and in the circumferential direction. The Kragabschnitte are designed as elastic spring arms whose axial deflection with respect to a pump axis by external acceleration forces can exceed a maximum allowable value. The case occurring in the spring arms mechanical stresses can cause damage to Federanne.

Ein weiteres Beispiel für eine Vorrichtung zum Fördern von Kraftstoff ist aus der EP-1431 566 bekannt.Another example of a device for conveying fuel is from the EP-1431 566 known.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Vorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, dass die Dämpfungselemente bei axialer Auslenkung eine stark progressive Federkennlinie aufweisen, so dass mit zunehmendem Federweg des Pumpenhalters eine progressiv zunehmende Federkraft im Dämpfungselement entsteht. Dadurch wird die axiale Auslenkung des Pumpenhalters gegenüber dem Stand der Technik verringert. Dies wird erfindungsgemäß erreicht, indem am Kragabschnitt ein elastischer Federabschnitt anschließt, der mit seiner Längserstreckung in axialer Richtung und in Umfangsrichtung bezüglich einer Pumpenachse verläuft und mit der Halterung verbunden ist.The device according to the invention with the characterizing features of the main claim has the advantage that the damping elements in axial deflection have a strong progressive spring characteristic, so that with increasing travel of the pump holder, a progressively increasing spring force in the damping element. This reduces the axial deflection of the pump holder over the prior art. This is inventively achieved by an elastic spring portion adjoins the Kragabschnitt, which extends with its longitudinal extent in the axial direction and in the circumferential direction with respect to a pump axis and is connected to the holder.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Vorrichtung möglich.The measures listed in the dependent claims advantageous refinements and improvements of the main claim device are possible.

Besonders vorteilhaft ist, wenn der Federabschnitt stegförmig, biegebalkenförmig oder federamförmig ausgebildet ist, da auf diese Weise eine gute Körperschallentkopplung erreicht wird.It is particularly advantageous if the spring portion web-shaped, bending beam-shaped or Federamförmig is formed, since in this way a good structure-borne sound decoupling is achieved.

Gemäß einer vorteilhaften Ausgestaltung ist der Federabschnitt mäanderförmig, U-förmig, V-förmig, W-förmig oder S-förmig ausgeführt.According to an advantageous embodiment of the spring portion is meandering, U-shaped, V-shaped, W-shaped or S-shaped.

Sehr vorteilhaft ist es, wenn der W-förmige Federabschnitt an seinen beiden Enden mit der Halterung und an seiner mittleren Ausbuchtung mit dem Kragabschnitt verbunden ist, da gemäß dieser ersten Alternative eine gute akustische Abkopplung erreicht wird.It when the W-shaped spring portion is connected at its two ends to the holder and at its central bulge with the Kragabschnitt, since according to this first alternative, a good acoustic decoupling is achieved is very advantageous.

Weiterhin vorteilhaft ist, wenn der Federabschnitt mit dem einen Ende mit der Halterung und mit dem anderen Ende mit dem Kragabschnitt verbunden ist, da auch gemäß dieser Alternative eine gute akustische Abkopplung erreicht wird.It is furthermore advantageous if the spring section is connected to the holder at one end and to the cantilever section at the other end, since good acoustic decoupling is also achieved according to this alternative.

Desweiteren vorteilhaft ist, wenn die Aufnahme und die Halterung konzentrisch zueinander angeordnet sind, wobei zwischen der Aufnahme und der Halterung ein Spalt vorgesehen ist. Auf diese Weise ist eine schwingende Relativbewegung der Aufnahme relativ zur Halterung möglich, die durch die Dämpfungselemente gedämpft wird.Furthermore, it is advantageous if the receptacle and the holder are arranged concentrically to one another, wherein a gap is provided between the receptacle and the holder. In this way, a swinging relative movement of the receptacle relative to the holder is possible, which is damped by the damping elements.

Auch vorteilhaft ist, wenn die Aufnahme in axialer Richtung bezüglich einer Pumpenachse über die Halterung hinausragt, da die Dämpfungselemente auf diese Weise bauraumsparend nahe am Umfang der Aufnahme angeordnet werden können. Außerdem werden die Dämpfungselemente bei zum Förderaggregat hin gerichteter radialer Beanspruchung an der Aufnahme abgestützt.It is also advantageous if the receptacle protrudes in the axial direction with respect to a pump axis over the holder, since the damping elements can be arranged in this way space-saving close to the periphery of the receptacle. In addition, the damping elements are supported at the delivery unit directed towards radial stress on the recording.

Darüber hinaus vorteilhaft ist, wenn an dem Kragabschnitt der Aufnahme oder an dem Umfang der Aufnahme eine Schulter vorgesehen ist, die zwischen zwei Anschlagkanten der Halterung axial bewegbar ist, da auf diese Weise eine Begrenzung der axialen Auslenkung der Aufnahme in beide Richtungen erreicht ist, so dass eine Beschädigung der Dämpfungselemente wirksam verhindert wird.Moreover, it is advantageous if a shoulder is provided on the cantilever section of the receptacle or on the circumference of the receptacle, which shoulder is axially movable between two stop edges of the mount, since in this way a limitation of the axial deflection of the receptacle in both directions is achieved that damage to the damping elements is effectively prevented.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert.

Fig.1
zeigt ein erstes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung,
Fig.2
eine Schnittansicht der Vorrichtung nach Fig.1,
Fig.3
ein zweites Ausführungsbeispiel der erfindungsgemäßen Vorrichtung und
Fig.4
eine Teilschnittansicht der Vorrichtung nach Fig.3.
An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description.
Fig.1
shows a first embodiment of the device according to the invention,
Fig.2
a sectional view of the device according to Fig.1 .
Figure 3
A second embodiment of the device according to the invention and
Figure 4
a partial sectional view of the device according to Figure 3 ,

Beschreibung des AusführungsbeispielsDescription of the embodiment

Fig.1 zeigt ein erstes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung. Fig.1 shows a first embodiment of the device according to the invention.

Die Vorrichtung zum Fördern von Kraftstoff ist in einem Kraftstofftank 1 angeordnet und fördert mittels eines Förderaggregates 2, beispielsweise einer Elektrokraftstoffpumpe, Kraftstoff aus dem Kraftstofftank 1 druckerhöht über eine Druckleitung 3 zu einer Brennkraftmaschine 4. Das Förderaggregat 2 ist beispielsweise in einem Speicherbehälter 5 angeordnet, der für das Förderaggregat 2 ausreichend Kraftstoff vorhält, damit dieses auch bei niedrigen Füllständen im Kraftstofftank 1 und beim Beschleunigen, Bremsen, Kurven- und/oder Bergfahren Kraftstoff ansaugen kann.The device for conveying fuel is arranged in a fuel tank 1 and conveyed by means of a delivery unit 2, for example an electric fuel pump, fuel from the fuel tank 1 druckerhöht via a pressure line 3 to an internal combustion engine 4. The delivery unit 2 is arranged for example in a storage container 5, the for the delivery unit 2 sufficient fuel holds so that it can suck fuel even at low levels in the fuel tank 1 and when accelerating, braking, cornering and / or driving uphill.

Das Förderaggregat 2 wird von einem Pumpenhalter 8 gehalten, der eine Aufnahme 9 für das Förderaggregat 2 und eine über Dämpfungselemente 10 mit der Aufnahme 9 verbundene Halterung 11 umfasst. Das Förderaggregat 2 ist in der Aufnahme 9 in axialer Richtung bezüglich einer Achse 2.1 des Förderaggregates 2 befestigt, beispielsweise mittels einer Pressung.The delivery unit 2 is held by a pump holder 8, which comprises a receptacle 9 for the delivery unit 2 and a holder 11 connected to the receptacle 9 via damping elements 10. The delivery unit 2 is fixed in the receptacle 9 in the axial direction with respect to an axis 2.1 of the delivery unit 2, for example by means of a pressing.

Die Dämpfungselemente 10 weisen jeweils einen Kragabschnitt 12 auf, der von der Aufnahme 9 ausgehend bis in den Bereich der Halterung 11 vorsteht. Der Kragabschnitt 12 ist beispielsweise stegförmig und in axialer Richtung starr ausgeführt. Es sind zumindest zwei, beispielsweise drei oder mehr Dämpfungselemente 10 vorgesehen, die über den Umfang verteilt sind. Die Dämpfungselemente 10 ermöglichen eine axiale und radiale Schwingungsbewegung der Aufnahme 9 mit dem darin angeordneten Förderaggregat 2.The damping elements 10 each have a Kragabschnitt 12, which projects from the receptacle 9, starting in the region of the holder 11. The Kragabschnitt 12 is for example web-shaped and rigid in the axial direction. At least two, for example three or more damping elements 10 are provided, which are distributed over the circumference. The damping elements 10 allow an axial and radial oscillation movement of the receptacle 9 with the delivery unit 2 arranged therein.

Um eine mechanische Überbeanspruchung des Dämpfungselementes 10 durch äußere Beschleunigungskräfte zu verhindern, ist erfindungsgemäß vorgesehen, dass am Kragabschnitt 12 des Dämpfungselementes 10 ein elastischer Federabschnitt 15 anschließt, der mit seiner Längserstreckung in axialer Richtung und in Umfangsrichtung bezüglich der Achse 2.1 verläuft und mit der Halterung 11 verbunden ist. Der Federabschnitt 15 verläuft nahe am Umfang der Aufnahme 9 oder des Förderaggregates 2.In order to prevent mechanical overstressing of the damping element 10 by external acceleration forces, the invention provides that on the Kragabschnitt 12 of the damping element 10, an elastic spring portion 15 connects, with his Longitudinal extent in the axial direction and in the circumferential direction with respect to the axis 2.1 extends and is connected to the bracket 11. The spring portion 15 extends close to the circumference of the receptacle 9 or the delivery unit. 2

Auf diese Weise werden Dämpfungselemente 10 erreicht, die bei axialer Auslenkung der Aufnahme 9 eine stark progressive Federkennlinie aufweisen, so dass zunächst eine weiche Federung erfolgt, aber mit zunehmendem Federweg des Pumpenhalters 8 eine progressiv zunehmende Federkraft im Dämpfungselement 10 entsteht. Dadurch wird die axiale Auslenkung des Pumpenhalters 8 gegenüber dem Stand der Technik verringert.In this way, damping elements 10 are achieved, which have a strongly progressive spring characteristic at axial deflection of the receptacle 9, so that initially a soft suspension takes place, but with increasing spring travel of the pump holder 8, a progressively increasing spring force in the damping element 10 is formed. As a result, the axial deflection of the pump holder 8 is reduced compared to the prior art.

Der Federabschnitt 15 ist stegförmig, biegebalkenförmig oder federarmfönnig ausgeführt und verläuft beispielsweise mäanderförmig, U-förmig, V-förmig, W-förmig oder S-förmig.The spring portion 15 is web-shaped, bending beam-shaped or featherarmfönnig executed and extends for example meandering, U-shaped, V-shaped, W-shaped or S-shaped.

Im ersten Ausführungsbeispiel ist der Federabschnitt 15 W-förmig ausgeführt, wobei dieser an seinen beiden Enden 16 mit der Halterung 11 und an seiner zentralen bzw. mittleren Ausbuchtung 17 mit dem Kragabschnitt 12 der Aufnahme 9 verbunden ist. Die Ausbuchtung 17 ist im ersten Ausführungsbeispiel ausgebaucht und dadurch Omega-förmig ausgebildet. Der Federabschnitt 15 gemäß dem ersten Ausführungsbeispiel ist beispielsweise derart ausgeführt, dass sich die einander gegenüberliegenden Schenkel der Ausbuchtung 17 7 nach einem Aufwärtshub der Aufnahme 9 aufeinander zu bewegen und schließlich an ihrer engsten Stelle aneinanderstoßen, wodurch sich die Steifigkeit des Dämpfungselementes 10 für einen weiteren Aufwärtshub erhöht und eine progressiv zunehmende Federkraft im Dämpfungselement 10 erreicht wird. Bei einem Abwärtshub der Aufnahme 9 ist beispielsweise keine progressiv zunehmende Federkraft im Dämpfungselement 10 vorgesehen, könnte aber selbstverständlich ausgeführt sein.In the first embodiment, the spring portion 15 is W-shaped, which is connected at its two ends 16 to the holder 11 and at its central or central bulge 17 with the Kragabschnitt 12 of the receptacle 9. The bulge 17 is bulged in the first embodiment and thereby formed omega-shaped. The spring portion 15 according to the first embodiment is designed, for example, such that the opposing legs of the bulge 17 7 to move towards each other after an upward stroke of the receptacle 9 and finally abut each other at its narrowest point, whereby the stiffness of the damping element 10 for a further upward stroke increases and a progressively increasing spring force in the damping element 10 is achieved. In a downward stroke of the receptacle 9, for example, no progressively increasing spring force is provided in the damping element 10, but could of course be executed.

Anstatt der W-Form könnte auch eine S-Form vorgesehen sein, wobei das eine Ende 16 mit dem Kragabschnitt 12 und das andere Ende 16 mit der Halterung 11 verbunden ist.Instead of the W-shape could also be provided an S-shape, wherein the one end 16 is connected to the Kragabschnitt 12 and the other end 16 to the bracket 11.

Beispielsweise werden die Aufnahme 9, das Dämpfungselement 10, das Dämpfungselement 10 mit dem Tragabschnitt 12 und dem Federabschnitt 15 in einem Spritzwerkzeug durch Spritzgießen aus Kunststoff hergestellt, wodurch der Federabschnitt 15 mit dem Kragabschnitt 12 und der Halterung 11 einstückig verbunden ist.For example, the receptacle 9, the damping element 10, the damping element 10 are made with the support portion 12 and the spring portion 15 in an injection molding tool by injection molding of plastic, whereby the spring portion 15 with the cantilever portion 12 and the bracket 11 is integrally connected.

Die Aufnahme 9 und die Halterung 11 sind konzentrisch zueinander angeordnet, wobei zwischen der Aufnahme 9 und der Halterung 11 ein Spalt 18 vorgesehen ist. Die Aufnahme 9 und die Halterung 11 sind beispielsweise ringförmig ausgeführt, wobei die Aufnahme 9 in axialer Richtung bezüglich der Achse 2.1 über die Halterung 11 hinausragen kann.The receptacle 9 and the holder 11 are arranged concentrically with each other, wherein between the receptacle 9 and the holder 11, a gap 18 is provided. The recording 9 and the holder 11 are designed, for example, annular, wherein the receptacle 9 can protrude in the axial direction with respect to the axis 2.1 on the holder 11.

Die axiale Auslenkung der Aufnahme 9 ist im ersten Ausführungsbeispiel in beide axiale Richtungen begrenzt. Dazu ragt der Kragabschnitt 12 in eine Ausnehmung 20 der Halterung 11 hinein, wobei an dem Kragabschnitt 12 eine mit der Ausnehmung 20 zusammenwirkende Schulter 21 ausgebildet ist, die in axialer Richtung zwischen zwei Anschlagkanten 22,23 der Ausnehmung 20 bewegbar ist. Die Schulter 21 ist beispielsweise beidseitig an dem Kragabschnitt 12 vorgesehen, so dass eine T-Form oder Kreuz-Form des Kragabschnitts 12 gebildet ist. Die Anschlagkanten 22,23 können aber auch auf andere Weise als durch die Ausnehmung 20 an der Halterung 11 realisiert sein.The axial deflection of the receptacle 9 is limited in the first embodiment in both axial directions. For this purpose, the Kragabschnitt 12 projects into a recess 20 of the holder 11, wherein on the Kragabschnitt 12 a cooperating with the recess 20 shoulder 21 is formed, which is movable in the axial direction between two stop edges 22,23 of the recess 20. The shoulder 21 is provided, for example, on both sides of the Kragabschnitt 12, so that a T-shape or cross-shape of the Kragabschnitts 12 is formed. However, the stop edges 22, 23 can also be realized in a different way than through the recess 20 on the holder 11.

Der Pumpenhalter 8 ist beispielsweise mittels von Haltemitteln 26 an dem Speicherbehälter 5 befestigt, kann aber selbstverständlich auch an anderen Stellen im Kraftstofftank 1 befestigt sein.The pump holder 8 is attached, for example, by means of holding means 26 to the storage container 5, but can of course also be attached to other locations in the fuel tank 1.

Fig.2 zeigt eine Schnittansicht der Vorrichtung nach Fig.1. Fig.2 shows a sectional view of the device according to Fig.1 ,

Bei der Vorrichtung nach Fig.2 sind die gegenüber der Vorrichtung nach Fig. 1 gleichbleibenden oder gleichwirkenden Teile durch die gleichen Bezugszeichen gekennzeichnet.In the device according to Fig.2 are the opposite to the device according to Fig. 1 Constant or equivalent parts by the same reference numerals.

Fig.3 zeigt ein zweites Ausführungsbeispiel der erfindungsgemäßen Vorrichtung. Figure 3 shows a second embodiment of the device according to the invention.

Bei der Vorrichtung nach Fig.3 sind die gegenüber der Vorrichtung nach Fig.1 und Fig.2 gleichbleibenden oder gleichwirkenden Teile durch die gleichen Bezugszeichen gekennzeichnet.In the device according to Figure 3 are the opposite to the device according to Fig.1 and Fig.2 Constant or equivalent parts by the same reference numerals.

Das zweite Ausführungsbeispiel unterscheidet sich gegenüber dem ersten Ausführungsbeispiel darin, dass der Federabschnitt 15 an seinem einen Ende 16 nicht mit der Halterung 11, sondern mit dem Kragabschnitt 12 der Aufnahme 9 verbunden ist. Das andere Ende 16 ist wie im ersten Ausführungsbeispiel mit der Halterung 11 verbunden. Der Federabschnitt 15 ist wie im ersten Ausführungsbeispiel W-förmig ausgeführt. Allerdings unterscheidet sich die mittige bzw. zentrale Ausbuchtung 17 gegenüber dem ersten Ausführungsbeispiel darin, dass sie nicht unmittelbar an den Kragabschnitt 12 gekoppelt, sondern durch elastische Biegung frei bewegbar ist und sich nach oben, also zur geschlossenen Seite hin, verjüngt.The second embodiment differs from the first embodiment in that the spring portion 15 is not connected at its one end 16 with the holder 11, but with the Kragabschnitt 12 of the receptacle 9. The other end 16 is connected to the bracket 11 as in the first embodiment. The spring portion 15 is W-shaped as in the first embodiment. However, the central or central bulge 17 differs from the first embodiment in that it is not coupled directly to the cantilever section 12, but is freely movable by elastic bending and tapers upwards, ie towards the closed side.

Außerdem verlaufen von jedem Kragabschnitt 12 ausgehend zwei Dämpfungselemente 10 an die Halterung 11, wobei die Federabschnitte 15 der beiden Dämpfungselemente 10 in entgegen gesetzte Umfangsrichtung verlaufen. Bei dieser Ausführung ist keine progressiv zunehmende Federkraft im Dämpfungselement 10, wie im ersten Ausführungsbeispiel durch Aneinanderstoßen von Schenkeln erreicht, vorgesehen.In addition, starting from each Kragabschnitt 12 starting two damping elements 10 to the holder 11, wherein the spring portions 15 of the two damping elements 10 extend in the opposite circumferential direction. In this embodiment, no progressively increasing spring force in the damping element 10, as achieved in the first embodiment by abutting legs, provided.

Die Halterung 11 ist beispielsweise Teil eines Deckels, der an dem Speicherbehälter 5 befestigt ist.The holder 11 is for example part of a lid which is fixed to the storage container 5.

Fig.4 zeigt eine Teilschnittansicht der Vorrichtung nach Fig.3. Figure 4 shows a partial sectional view of the device according to Figure 3 ,

Bei der Vorrichtung nach Fig.4 sind die gegenüber der Vorrichtung nach Fig.1 bis Fig.3 gleichbleibenden oder gleichwirkenden Teile durch die gleichen Bezugszeichen gekennzeichnet.In the device according to Figure 4 are the opposite to the device according to Fig.1 to Fig.3 Constant or equivalent parts by the same reference numerals.

Die axiale Auslenkung der Aufnahme 9 ist im zweiten Ausführungsbeispiel auch in beide axiale Richtungen begrenzt. Im Gegensatz zum ersten Ausführungsbeispiel ist die Schulter 21 nicht an dem Kragabschnitt 12 der Aufnahme 9, sondern am Umfang der Aufnahme 9 vorgesehen und wirkt mit zwei Anschlagkanten 22,23 der Halterung 11 zusammen. Die Schulter 21 ist beispielsweise durch einen an der Aufnahme 9 angeordneten Ring 28 gebildet, der als separates Teil oder einstückig an der Aufnahme 9 vorgesehen sein kann. Anstatt eines Rings 28 können auch mehrere einzelne Schultern 21 ausgeführt sein. Der Ring 28 kann, beispielsweise als Metallring, auch die Funktion haben, das Förderaggregat 2 in der Aufnahme 9 durch Pressung zu fixieren.The axial deflection of the receptacle 9 is limited in the second embodiment in both axial directions. In contrast to the first embodiment, the shoulder 21 is not provided on the Kragabschnitt 12 of the receptacle 9, but on the circumference of the receptacle 9 and cooperates with two stop edges 22,23 of the holder 11. The shoulder 21 is formed for example by a arranged on the receptacle 9 ring 28, which may be provided as a separate part or in one piece on the receptacle 9. Instead of a ring 28 and a plurality of individual shoulders 21 may be executed. The ring 28 may, for example as a metal ring, also have the function to fix the delivery unit 2 in the receptacle 9 by pressing.

Claims (9)

  1. Device for conveying fuel, with a conveying assembly (2) and with a pump holder (8) which holds the conveying assembly (2) and which has a receptacle (9) for the conveying assembly (2) and a holder (11) connected to the receptacle (9) via at least one damping element (10), the damping element (10) having a projecting portion (12) which projects from the receptacle (9) for the conveying assembly into the region of the holder (11), characterized in that the projecting portion (12) of the damping element (10) has adjoining it an elastic spring portion (15) which is of meander-shaped, U-shaped, V-shaped, W-shaped or S-shaped design and which runs with its longitudinal extent in the axial direction and in the circumferential direction with respect to a pump axis (2.1) and which is connected to the holder (11).
  2. Device according to Claim 1, characterized in that the spring portion (15) is designed in the form of a web, in the form of a flexural beam or in the form of a spring arm.
  3. Device according to one of the preceding claims, characterized in that the W-shaped spring portion (15) is connected at its two ends (16) to the holder (11) and at its central or middle bulge (17) to the projecting portion (12).
  4. Device according to one of the preceding claims, characterized in that the spring portion (15) is connected at one end (16) to the holder (11) and at the other end (16) to the projecting portion (12).
  5. Device according to one of the preceding claims, characterized in that the receptacle (9) and the holder (11) are arranged concentrically to one another, with a gap (18) being provided between the receptacle (9) and the holder (11).
  6. Device according to one of the preceding claims, characterized in that the receptacle (9) projects beyond the holder (11) in the axial direction with respect to a pump axis (2.1).
  7. Device according to one of the preceding claims, characterized in that a shoulder (21) is provided on the projecting portion (12) of the receptacle (9) and is movable axially between two stop edges (22, 23) of the holder (11).
  8. Device according to one of the preceding claims, characterized in that a shoulder (21) is provided on the receptacle (9) and is movable axially between two stop edges (22, 23) of the holder (11).
  9. Device according to one of the preceding claims, characterized in that the shoulder (21) is formed by a ring (28) which is arranged on the receptacle (9).
EP20100754718 2009-10-28 2010-09-09 Device for delivering fuel Active EP2494181B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009046112A DE102009046112A1 (en) 2009-10-28 2009-10-28 Device for conveying fuel
PCT/EP2010/063232 WO2011051039A1 (en) 2009-10-28 2010-09-09 Device for conveying fuel

Publications (2)

Publication Number Publication Date
EP2494181A1 EP2494181A1 (en) 2012-09-05
EP2494181B1 true EP2494181B1 (en) 2014-08-13

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Application Number Title Priority Date Filing Date
EP20100754718 Active EP2494181B1 (en) 2009-10-28 2010-09-09 Device for delivering fuel

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US (1) US8800598B2 (en)
EP (1) EP2494181B1 (en)
JP (1) JP5340489B2 (en)
CN (1) CN102597483B (en)
DE (1) DE102009046112A1 (en)
WO (1) WO2011051039A1 (en)

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JP6608331B2 (en) * 2016-04-26 2019-11-20 愛三工業株式会社 Fuel supply device
JP6698508B2 (en) * 2016-12-12 2020-05-27 愛三工業株式会社 Fuel supply device
JP2018096282A (en) * 2016-12-13 2018-06-21 愛三工業株式会社 Fuel supply device
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JP7103038B2 (en) * 2018-08-01 2022-07-20 株式会社デンソー Fuel supply device

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Also Published As

Publication number Publication date
EP2494181A1 (en) 2012-09-05
JP5340489B2 (en) 2013-11-13
WO2011051039A1 (en) 2011-05-05
DE102009046112A1 (en) 2011-05-12
CN102597483A (en) 2012-07-18
US20120199223A1 (en) 2012-08-09
JP2013508614A (en) 2013-03-07
US8800598B2 (en) 2014-08-12
CN102597483B (en) 2014-10-29

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