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WO2008129001A1 - Élément de raccordement pour conduites fluidiques et élément de construction guidant du fluide sous pression - Google Patents

Élément de raccordement pour conduites fluidiques et élément de construction guidant du fluide sous pression Download PDF

Info

Publication number
WO2008129001A1
WO2008129001A1 PCT/EP2008/054747 EP2008054747W WO2008129001A1 WO 2008129001 A1 WO2008129001 A1 WO 2008129001A1 EP 2008054747 W EP2008054747 W EP 2008054747W WO 2008129001 A1 WO2008129001 A1 WO 2008129001A1
Authority
WO
WIPO (PCT)
Prior art keywords
connection
section
connection element
element according
connecting element
Prior art date
Application number
PCT/EP2008/054747
Other languages
German (de)
English (en)
Inventor
Günter LEWENTZ
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2008129001A1 publication Critical patent/WO2008129001A1/fr

Links

Classifications

    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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
    • F04B1/0443—Draining of the housing; Arrangements for handling leaked fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/008—Couplings of the quick-acting type for branching pipes; for joining pipes to walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/098—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, e.g. clips
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Definitions

  • the present invention relates to a connection element for fluid lines.
  • the invention further relates to a pressure fluid leading component having at least one connection area for receiving and / or locking of such a connection element.
  • the invention relates to a hydraulic pump with such a device.
  • a storage injection system In a fuel supply system for internal combustion engines, storage injection systems are frequently used which operate with very high injection pressures at the fuel injection nozzles and thus with overall high system pressure.
  • fuel is conveyed by means of a high-pressure pump to fuel injectors, with the aid of which the fuel is injected into the combustion chamber of the internal combustion engine.
  • fuel injectors In a storage injection system, fuel is conveyed by means of a high-pressure pump to fuel injectors, with the aid of which the fuel is injected into the combustion chamber of the internal combustion engine.
  • Such a fuel injector has an injection valve which is hydraulically opened or closed by a control valve with the aid of the fuel pressure applied to the fuel injector.
  • the control valve is actuated by an electrically actuated actuator.
  • the accumulator injection system further comprises a high-pressure accumulator, a so-called storage line or common rail, which is arranged between the high-pressure pump and the fuel injectors and which ensures that the fuel injectors are provided with a constantly high system pressure.
  • DE 199 40 387 C1 discloses a leakage connection for attaching a leakage line to a fuel injector.
  • the leakage connection has a connection piece, which is formed integrally with the injector body, and a connection nipple, which engages with an insert in an opening in the connection piece.
  • a flexurally elastic securing device is held with a first arm in a recess on the connecting piece. With a second arm, a clamping connection with the connecting piece is produced in an end position.
  • the invention is based on the object to provide a connection element for fluid lines available, which is as compact and simple as possible, and which allows a solid and media-tight connection to a pressure fluid-carrying device.
  • a connecting element according to the invention for fluid lines which may be provided in particular for use in fuel supply system of internal combustion engines, a rigid pipe section is provided which has on an outer circumferential surface a connection collar, an adjoining centering collar, a sealing element and means for mechanical locking.
  • the connection element can be designed, in particular, as a connecting piece for pressure fluid connections of hydraulic pumps.
  • the line section optionally has round and / or oval cross-sections of different diameters.
  • connection element has the advantage that in a simple manner a pluggable and / or latchable connection with a housing, a receptacle o. The like. will be produced.
  • the connection element is particularly suitable for use with fuel lines. Elaborate screwing, pressing or gluing can be dispensed with altogether.
  • the connecting element can be made of a different material than the receptacle into which it is introduced.
  • the connection element or the connection nipple is made of plastic, in particular as a plastic injection-molded part. Due to the connection, there are no problems due to different thermal expansion behavior of different materials, as might be the case for example with press connections. Due to the omission of an adhesive connection, it is only necessary to pay attention to the fuel and media resistance of the connection element. On the media resistance of an adhesive connection no consideration needs to be taken, as a bond is not necessary.
  • connection technology does not require a high-precision fit.
  • the force for producing the latching connection Training is not very high, so that no plastic deformations of possibly made of plastic connection element are to be feared.
  • the means for mechanical locking can be formed for example by a spring ring, which is held in an annular groove on the outer circumferential surface of the line section.
  • the spring ring corresponds with a groove on an inner circumferential surface of a receptacle of a line counterpart.
  • the spring ring may have a round, an oval or a polygonal cross section.
  • the means for mechanical locking may be formed by at least one latching hook arranged on the outer circumferential surface of the line section.
  • two, three or more locking hooks may be provided, which on the outer circumferential surface of the line section.
  • Line section are arranged distributed.
  • Such locking hooks may be provided instead of a spring ring or in addition to such.
  • a stable and always removable locking connection is also created with this variant.
  • the sealing element is formed by at least one O-ring, which is arranged and / or held on the outer circumferential surface of the line section.
  • the O-ring is preferably held in an annular groove.
  • connection element has an angled connection section.
  • the connection element may also optionally have a branch and two or more nozzle sections. Depending on requirements, the desired line sections and connection elements are made available for a variety of purposes.
  • the invention further comprises a hydraulic and / or pneumatic medium or pressure fluid leading component having at least one connection area for receiving and / or locking a connection element according to one of the embodiments described above.
  • An embodiment variant provides a component in which the connection region has at least one centering section with means for interacting with the means for mechanical locking and at least one sealing section of smaller inner diameter than the centering section for cooperation with the sealing element. It can also be provided that the centering and / or the sealing portion are each formed in a hollow cylindrical or conical shape.
  • a hollow cone-shaped connecting section is provided between the sealing section and the centering section.
  • a hollow cone-shaped connecting section is provided between the sealing section and the centering section.
  • Pipe connection provided, which is at least partially aligned with the line section.
  • Such a component represents a cost-effective and simple possibility for the creation of line connections, so that in many different applications, costly solutions can often be dispensed with and standard connections can be resorted to.
  • connection element is latched and / or glued in the connection region of the component.
  • This arrangement may in particular be part of a hydraulic pump.
  • a connection nipple which is generally referred to as a connection element, can be designed as a plastic injection-molded part.
  • the design of the nipple can or should have geometry details, according to which an axial mounting stop is provided, which can be realized by a corresponding collar diameter.
  • a radial centering can be achieved by matching the diameter of the nipple with the diameter of the bore in the counterpart.
  • the sealing to the outside to prevent leakage (eg of fuel) and inward to prevent the ingress of external media (eg spray water) can be achieved by means of a proven O-ring.
  • the holding function can be taken over in particular by an open spring ring, which holds the nipple in a form-fitting manner in the receiving bore in combination with a background rotation (groove) in the bore.
  • the spring ring can in particular be made of a spring wire with a round or square cross-section.
  • the nipple can also be provided with molded barbs or latching hooks, which then snap umbrella-shaped into the groove and secure the nipple against withdrawal.
  • the nipple does not necessarily have to be disassembled again after it has been mounted, since, for example, the supply and return lines are mounted or dismounted on the nipple in the case of a pump.
  • the nipple itself is not preassembled in the prefabricated leakage line and is therefore not part of the leakage line.
  • the nipple can also be assigned to the corresponding hose line, so that it is inserted into the pump only when it is mounted on the motor.
  • the two nipples can be provided with different diameters. In this way, each connection element only fits into the receptacle provided for this purpose, but not into the respective other receptacle.
  • the various functions to be performed are assigned to different components which are most suitable for this purpose.
  • the sealing task is fulfilled by the O-ring, while the axial protection is achieved by the spring ring.
  • the design as a plastic injection molded part provides a very cost-effective component.
  • the assembly is very simple, which is supported by positive snap connections. The pressing forces and paths do not need to be monitored separately. Damage due to incorrect handling and assembly is almost impossible.
  • Different requirements can be easily taken into account, since the upper part of the nipple can be designed freely. By appropriate variation of the upper part of the nipple can be easily converted to specific hose connections, the lower part of the nipple can remain unchanged.
  • connection area which is provided for connection to a hose line, can be designed differently and / or bent or angled. If necessary, two or multiple outlets can be provided, which can be configured as branches.
  • the réellearch. Counter contour can be produced by means of a suitable mold in a simple and cost-effective manner.
  • this can optionally be made of steel, brass or other suitable material.
  • connection element 1 shows a first variant of a connection element in a schematic longitudinal section
  • FIG. 4 shows a further view of the first variant of the connection element according to FIG. 1,
  • FIG 1 shows a first variant of a connecting element 10 for fluid lines (not shown) in a schematic longitudinal sectional view.
  • the connection element 10 is located in a suitable bore 12 of a housing 14 which, for example, is a pump housing, cover or the like. can be.
  • the bore 12, which in this context is also referred to as a connection region of a component carrying pressure fluid, has graduated diameters which, in conjunction with the connection element 10 -also also referred to as connection nipple 16 or as inlet or return nipple-each have different functions fulfill.
  • the connecting element 10 or the connecting nipple 16 essentially comprises six components, namely a central fluid bore 18, a stop collar 20 for defining the immersion depth of the nipple 16 in the housing 14, an upper centering section 22 of smaller diameter than the stop collar 20, one on it adjoining conical section 24, a sealing section 26 of smaller diameter than the centering section 22, and an upper connecting section 28 for connection to a hose line, for example a fuel or hydraulic line, which protrudes out of the housing 14 out of the stop collar 20.
  • a hose line for example a fuel or hydraulic line
  • annular groove 30 is incorporated, which receives a spring ring 32. This provides in cooperation with a corresponding annular groove 34 in the inner circumferential surface of the bore 12 for the mechanical securing of the connecting element 10 in the axial direction.
  • annular groove 36 is provided, which serves to receive an acting as a sealing element O-ring 38. This ensures a liquid-tight seal of the sealing portion 26 of the connecting element 10 against the bore 12th
  • FIG. 2 shows a spring ring 32 according to FIG. 1 serving as a securing element in various views. It can be seen from the top illustration that the spring ring 32 has an opening, so that it can deform elastically and be introduced into the corresponding annular groove 30 on the centering section 22 of the connection element 10.
  • the two lower views show different ring cross-sections of the spring ring 32, which may optionally have a round, a square or otherwise shaped cross-section.
  • FIG. 3 shows a second variant of the connection element 10 in a schematic longitudinal section.
  • This second variant of the connecting element 10 has instead of a spring ring for axial fixing in the bore 12 of the Housing 14 two or more locking hooks 40, which can engage in a matching annular groove 34 on the inner circumferential surface of the bore 12 and thus form a releasable latching connection.
  • molded in the plastic component latching hooks 40 are shaped so that they can dodge elastically inwards.
  • a conical transition section can also be provided in this variant, which, however, can not be seen in the illustrated sectional plane of FIG.
  • the remaining structure of the connecting element 10 according to FIG. 3 corresponds to that of the first variant according to FIG.
  • FIG. 4 shows a further view of the first variant of the connection element 10 according to FIG. 1, which has a straight connection section 28.
  • FIG. 5 shows a third variant of the connecting element 10 in a schematic representation.
  • the nozzle portion 28 is angled or cranked by 90 degrees.
  • FIG 6 shows a fourth variant of the connecting element 10, in which the nozzle portion 28 is angled at an angle ⁇ of about 45 °.
  • FIG. 7 shows a fifth variant of the connecting element 10, which has a branching point 42 and, subsequently, two connecting piece sections 28, which are each offset by about 45 °.
  • FIG. 8 shows a sixth variant of the connection element 10 and illustrates the possibility of choosing the connection section 28 in different design variants such that it can satisfy different requirements.
  • the lower portion of the connecting element 10 below the stop collar 20, however, is component-specific and thus hardly variable.
  • 9 shows possible installation variants for such connection elements 10 using the example of a housing 14 of a fuel pump 44.
  • the reference numeral 46 designates a nozzle for the fuel inlet, while the reference numeral 48 denotes a nozzle for the fuel return.
  • This illustration clarifies that the connection region of the connection elements 10 can each be designed the same, while the connection section 28 can be formed differently if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un élément de raccordement (10) pour conduites fluidiques, en particulier une tubulure de raccordement pour des raccords de fluide sous pression de pompes hydrauliques, comprenant une section de conduite rigide en flexion qui présente sur une surface d'enveloppe extérieure un collet de butée (20), un collet de centrage (22) s'y raccordant, un élément d'étanchéité et des moyens de verrouillage mécanique. Un élément de construction guidant du fluide sous pression présente au moins une partie de raccordement pour recevoir et/ou verrouiller un tel élément de raccordement (10).
PCT/EP2008/054747 2007-04-24 2008-04-18 Élément de raccordement pour conduites fluidiques et élément de construction guidant du fluide sous pression WO2008129001A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007019332.9 2007-04-24
DE102007019332A DE102007019332A1 (de) 2007-04-24 2007-04-24 Anschlusselement für Fluidleitungen sowie Druckfluid führendes Bauelement

Publications (1)

Publication Number Publication Date
WO2008129001A1 true WO2008129001A1 (fr) 2008-10-30

Family

ID=39645353

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/054747 WO2008129001A1 (fr) 2007-04-24 2008-04-18 Élément de raccordement pour conduites fluidiques et élément de construction guidant du fluide sous pression

Country Status (2)

Country Link
DE (1) DE102007019332A1 (fr)
WO (1) WO2008129001A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012095269A1 (fr) * 2011-01-14 2012-07-19 Robert Bosch Gmbh Pompe, en particulier pour un système d'injection de carburant d'un moteur à combustion interne
WO2013092865A1 (fr) * 2011-12-21 2013-06-27 Robert Bosch Gmbh Pompe, en particulier pompe haute pression carburant pour un dispositif d'injection de carburant

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011108588A1 (de) * 2011-07-27 2013-01-31 Thomas Magnete Gmbh Dämpferanordnung und Pumpe mit einer Dämpferanordnung
FR3005712A1 (fr) * 2013-05-14 2014-11-21 Peugeot Citroen Automobiles Sa Bride de connexion
DE102018216850A1 (de) * 2018-10-01 2020-04-02 Robert Bosch Gmbh Kraftstoffhochdruckpumpe mit einem Anschlussstutzen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105226A (en) * 1976-06-01 1978-08-08 Celanese Corporation Snap-in fittings and coupling ring therefor
US5707085A (en) * 1996-09-12 1998-01-13 General Motors Corporation Fluid coupling
WO1999001691A1 (fr) * 1997-07-02 1999-01-14 Johannes Schäfer vorm. Stettiner Schraubenwerke GmbH & Co. KG Raccord par emboitement pour conduites rigides et combinaison d'un raccord par emboitement et d'un outil de liberation
DE102005049673A1 (de) * 2004-11-11 2006-05-18 Heinrich Gillet Gmbh Aus zwei wenigstens bereichsweise rohrförmigen Gehäuseteilen bestehendes Gehäuse
US20060108793A1 (en) * 2004-10-29 2006-05-25 Mcgee Stephen Quick connect coupling

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Publication number Priority date Publication date Assignee Title
FR2263449A1 (en) * 1974-03-06 1975-10-03 Staubli Sa Ets Joining mechanism for tubing - has expanding split ring holding toroidal seal against conical seat
DE19940387C1 (de) 1999-08-25 2001-02-22 Siemens Ag Leckageanschluss und Kraftstoffinjektor mit einem solchen Leckageanschluss
DE10026277A1 (de) * 2000-05-26 2001-12-20 Siemens Ag Leckageanschluß an einem Kraftstoffinjektor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105226A (en) * 1976-06-01 1978-08-08 Celanese Corporation Snap-in fittings and coupling ring therefor
US5707085A (en) * 1996-09-12 1998-01-13 General Motors Corporation Fluid coupling
WO1999001691A1 (fr) * 1997-07-02 1999-01-14 Johannes Schäfer vorm. Stettiner Schraubenwerke GmbH & Co. KG Raccord par emboitement pour conduites rigides et combinaison d'un raccord par emboitement et d'un outil de liberation
US20060108793A1 (en) * 2004-10-29 2006-05-25 Mcgee Stephen Quick connect coupling
DE102005049673A1 (de) * 2004-11-11 2006-05-18 Heinrich Gillet Gmbh Aus zwei wenigstens bereichsweise rohrförmigen Gehäuseteilen bestehendes Gehäuse

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012095269A1 (fr) * 2011-01-14 2012-07-19 Robert Bosch Gmbh Pompe, en particulier pour un système d'injection de carburant d'un moteur à combustion interne
CN103299064A (zh) * 2011-01-14 2013-09-11 罗伯特·博世有限公司 泵，尤其是用于内燃机的燃料喷射系统的泵
CN103299064B (zh) * 2011-01-14 2016-10-19 罗伯特·博世有限公司 泵，尤其是用于内燃机的燃料喷射系统的泵
WO2013092865A1 (fr) * 2011-12-21 2013-06-27 Robert Bosch Gmbh Pompe, en particulier pompe haute pression carburant pour un dispositif d'injection de carburant
CN103998762A (zh) * 2011-12-21 2014-08-20 罗伯特·博世有限公司 泵，尤其是燃料喷射装置用的燃料高压泵

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