DE10042307A1 - Fastening unit with an external screw thread is provided with a device which secures the fastening unit in a screw thread in one component and prevents its separation from another component - Google Patents

Fastening unit with an external screw thread is provided with a device which secures the fastening unit in a screw thread in one component and prevents its separation from another component

Info

Publication number
DE10042307A1
DE10042307A1 DE2000142307 DE10042307A DE10042307A1 DE 10042307 A1 DE10042307 A1 DE 10042307A1 DE 2000142307 DE2000142307 DE 2000142307 DE 10042307 A DE10042307 A DE 10042307A DE 10042307 A1 DE10042307 A1 DE 10042307A1
Authority
DE
Germany
Prior art keywords
screw thread
fastening unit
component
fastener
secures
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE2000142307
Other languages
German (de)
Inventor
Werner Kaiser
Arnd Langhans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE2000142307 priority Critical patent/DE10042307A1/en
Publication of DE10042307A1 publication Critical patent/DE10042307A1/en
Withdrawn legal-status Critical Current

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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078—Connections of intake systems to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/002—Measures against loss of bolts, nuts or pins

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Connection Of Plates (AREA)

Abstract

The fastening unit (1) with an external screw thread (2) is provided with a device (3) which secures the fastening unit in a screw thread (7) in a component (6). At the same time, the device (3) prevents separation of the fastening unit from a component (4) which subsequently is to be joined to the component (6).

Description

Die Erfindung betrifft ein Befestigungsmittel, das beispiels­ weise eingesetzt wird zum Befestigen eines Ansaugtraktes ei­ ner Brennkraftmaschine an einem Flansch des Zylinderkopfs.The invention relates to a fastener, for example wise is used to attach an intake tract egg ner internal combustion engine on a flange of the cylinder head.

Ein Befestigungsmittel ist beispielsweise bekannt aus der DE 36 24 938 C2. Der Ansaugtrakt wird zur Montage in einem Kraftfahrzeug häufig als vorgefertigtes Modul mit entspre­ chender Sensorik und Aktuatorik zur Endmontage im Kraftfahr­ zeug geliefert.A fastener is known for example from the DE 36 24 938 C2. The intake tract is for assembly in one Motor vehicle often as a prefabricated module with appropriate sensors and actuators for final assembly in motor vehicles stuff delivered.

Dabei ist es für einen effizienten Herstellungsprozess wün­ schenswert, dass Befestigungsmittel, die zum Befestigen des Ansaugtraktes an einem Flansch des Zylinderkopfs der Brenn­ kraftmaschine vorgesehen sind, bereits in dafür vorgesehene Ausnehmungen des Ansaugtrakts gesteckt sind, um so eine schnelle Endmontage zu ermöglichen und gleichzeitig auch bei oft sehr begrenztem Bauraum und schwerer Zugänglichkeit im Motorraum der Brennkraftmaschine das Befestigen dieser Befes­ tigungselemente überhaupt erst zu ermöglichen.It is desirable for an efficient manufacturing process it is worth that fasteners that are used to fasten the Intake tract on a flange of the cylinder head of the Brenn engine are already provided in intended Recesses of the intake tract are inserted, so one enable quick final assembly and at the same time also at often very limited space and difficult to access in Engine compartment of the internal combustion engine attaching these attachments to enable elements of

Zu diesem Zweck ist es bekannt entsprechend geformte Hülsen in Ausnehmungen des Ansaugtraktes einzusetzen, die einen Ab­ satz aufweisen, hinter dem eine Verdickung am Schafft des Be­ festigungsmittels gedrückt wird oder durch die das Schrauben­ gewinde hindurch geschraubt wird, wodurch der Rückweg der Schraube verhindert wird. Alternativ ist es auch bekannt auf einen Halsbereich des Befestigungsmittels ohne Gewinde einen Gummiring zu schieben, der in die Buchse geklemmt wird. Dies hat jedoch den Nachteil, dass das Befestigungsmittel in der Buchse zwangszentriert wird mit der Folge, dass durch eine entsprechend großzügige Bemessung der Buchse dennoch keine Fertigungstoleranzen in Bezug auf den Ansaugtrakt und den Flansch am Zylinderkopf ausgeglichen werden können. For this purpose it is known to have correspondingly shaped sleeves to use in recesses of the intake tract, the Ab Have set behind which a thickening of the Be is pressed or by the screw thread is screwed through, making the return of the Screw is prevented. Alternatively, it is also known on a neck portion of the non-threaded fastener Slide rubber ring that is clamped in the socket. This has the disadvantage, however, that the fastener in the The socket is positively centered, with the result that a according to generous dimensioning of the socket none Manufacturing tolerances in relation to the intake tract and the Flange on the cylinder head can be compensated.  

Die Aufgabe der Erfindung ist es, ein Befestigungsmittel so auszubilden, dass es einfach und zuverlässig ist.The object of the invention is to provide a fastener educate that it is simple and reliable.

Die Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des unabhängigen Patentanspruchs. Vorteilhafte Ausgestaltun­ gen der Erfindung sind in den Unteransprüchen gekennzeichnet.The object is achieved according to the invention by the features of the independent claim. Advantageous design gene of the invention are characterized in the dependent claims.

Ausführungsbeispiele der Erfindung sind im folgenden anhand der schematischen Zeichnung erläutert.Exemplary embodiments of the invention are described below the schematic drawing explained.

Die einzige Figur zeigt ein Befestigungsmittel 1, das bevor­ zugt eine Schraube ist. Das Befestigungsmittel 1 hat ein Au­ ßengewinde 2, auf das ein ringförmiger Körper 3 mit Haken aufgebracht ist. Der ringförmige Körper 3 ist vorzugsweise aus spritzfähigem Kunststoff ausgebildet und ist über ein o­ der mehrere Gewindegänge des Außengewindes 2 aufgespritzt. Als Kunststoff wird vorzugsweise Polyamid eingesetzt. Alter­ nativ können beispielsweise auch Polypropylen oder Polyäthy­ len eingesetzt werden. Ferner weist der ringförmige Körper 3 vorzugsweise Haken auf, die in Form von Widerhaken ausgebil­ det sind. Das Befestigungsmittel 1 wird in eine Ausnehmung eines Ansaugtraktes 4 eingebracht, in der vorzugsweise eine Hülse angeordnet ist. Ein derartiger Ansaugtrakt 4, der einem zweiten Teil entspricht, umfasst einen Sammler und Saugrohre, die von dem Sammler hin zu Einlassöffnungen von Zylindern der Brennkraftmaschine geführt sind. Ein derartiger Ansaugtrakt ist beispielsweise aus Kunststoff ausgebildet.The single figure shows a fastener 1 , which is before a screw. The fastener 1 has an external thread 2 , on which an annular body 3 is applied with hooks. The ring-shaped body 3 is preferably made of injection-molded plastic and is sprayed on via one or more threads of the external thread 2 . Polyamide is preferably used as the plastic. Alternatively, polypropylene or polyethylene can also be used, for example. Furthermore, the annular body 3 preferably has hooks which are ausgebil det in the form of barbs. The fastening means 1 is introduced into a recess in an intake tract 4 , in which a sleeve is preferably arranged. Such an intake tract 4 , which corresponds to a second part, comprises a collector and intake pipes, which are led from the collector to inlet openings of cylinders of the internal combustion engine. Such an intake tract is made of plastic, for example.

In der Figur ist ferner ein einem ersten Teil entsprechender Flansch 6 eines Zylinderkopfs einer Brennkraftmaschine darge­ stellt. In dem Flansch 6 ist eine Bohrung vorgesehen mit ei­ nem Innengewinde 7 zur Aufnahme des Außengewindes 2 des Be­ festigungsmittels. Bei der Herstellung des Ansaugtraktes wird das Befestigungsmittel durch die Ausnehmung geschoben, in der die Hülse 5 angeordnet ist, wobei die hakenförmigen Teile des ringförmigen Körpers 3 elastisch in Richtung des Außengewindes des Befestigungsmittels 1 verbogen werden. Sobald das Be­ festigungsmittel 1 so weit durch die Hülse 5 geschoben ist, dass der ringförmige Körper 3 nicht mehr im Bereich der Hülse ist, bilden die Haken des ringförmigen Körpers Widerhaken, durch die verhindert wird, dass das Befestigungsmittel aus dem Ansaugtrakt 4 herausfallen kann.In the figure, a flange 6 corresponding to a first part of a cylinder head of an internal combustion engine is also shown. In the flange 6 , a hole is provided with egg nem internal thread 7 for receiving the external thread 2 of the fastener. During the manufacture of the intake tract, the fastening means is pushed through the recess in which the sleeve 5 is arranged, the hook-shaped parts of the annular body 3 being elastically bent in the direction of the external thread of the fastening means 1 . As soon as the fastener 1 is pushed so far through the sleeve 5 that the annular body 3 is no longer in the region of the sleeve, the hooks of the annular body form barbs, by which the fastener is prevented from falling out of the intake tract 4 .

Wird nun der Ansaugtrakt 4 an dem Zylinderkopf 6 befestigt, so wird dazu das Befestigungsmittel 1 mit seinem Außengewinde 2 in das Innengewinde 7 des Zylinderkopfs 6 eingeschraubt. Beim Einschrauben des Befestigungsmittels 1 in den Zylinder­ kopf 6 schmilzt der Kunststoff auf und wirkt dann als Siche­ rung für das Befestigungsmittel, die sicherstellt, dass das Befestigungsmittel in der Position verbleibt, in die es bei dem Montagevorgang gebracht wurde.If the intake tract 4 is now fastened to the cylinder head 6 , the fastening means 1 with its external thread 2 is screwed into the internal thread 7 of the cylinder head 6 . When screwing the fastener 1 into the cylinder head 6 , the plastic melts and then acts as a fuse for the fastener, which ensures that the fastener remains in the position into which it was brought during the assembly process.

Somit erfüllt der ringförmige Körper zwei Funktionen und zwar zum einen die Sicherung des Befestigungsmittels im montierten Zustand des Ansaugtraktes und zum anderen die Verliersiche­ rung im vormontierten Zustand des Ansaugtraktes, wobei dann sichergestellt ist, dass das Befestigungsmittel nicht aus dem Ansaugtrakt fallen kann.The ring-shaped body thus fulfills two functions, namely on the one hand securing the fastener in the assembled Condition of the intake tract and secondly the captive tion in the pre-assembled state of the intake tract, where then it is ensured that the fastener is not from the Intake tract can fall.

Claims (3)

1. Befestigungsmittel mit einem Außengewinde (2), mit einem Mittel zur Sicherung des Befestigungsmittels in einem Gewinde (7), das in einem ersten Teil ausbildbar ist, wobei das Mit­ tel zur Sicherung des Befestigungsmittels gleichzeitig eine Verliersicherung ist, die sicherstellt, dass das Befesti­ gungsmittel im vormontierten Zustand aus einem zweiten Teil nicht herausfallen kann, wobei das erste Teil mit dem zweiten Teil mittels des Befestigungsmittels koppelbar ist.1. Fastening means with an external thread ( 2 ), with a means for securing the fastener in a thread ( 7 ), which can be formed in a first part, wherein the means for securing the fastener is at the same time a captive device that ensures that Fastening means in the preassembled state cannot fall out of a second part, the first part being able to be coupled to the second part by means of the fastening means. 2. Befestigungsmittel nach Anspruch 1, dadurch gekennzeich­ net, dass das Mittel zur Sicherung des Befestigungsmittels ein ringförmiger Körper ist mit angeformtem Haken.2. Fastening device according to claim 1, characterized net that the means of securing the fastener an annular body is with molded hook. 3. Befestigungsmittel nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der ringförmige Körper aus Poly­ amid ist.3. Fastening means according to one of the preceding claims, characterized in that the annular body made of poly is amide.
DE2000142307 2000-08-29 2000-08-29 Fastening unit with an external screw thread is provided with a device which secures the fastening unit in a screw thread in one component and prevents its separation from another component Withdrawn DE10042307A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2000142307 DE10042307A1 (en) 2000-08-29 2000-08-29 Fastening unit with an external screw thread is provided with a device which secures the fastening unit in a screw thread in one component and prevents its separation from another component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2000142307 DE10042307A1 (en) 2000-08-29 2000-08-29 Fastening unit with an external screw thread is provided with a device which secures the fastening unit in a screw thread in one component and prevents its separation from another component

Publications (1)

Publication Number Publication Date
DE10042307A1 true DE10042307A1 (en) 2002-03-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE2000142307 Withdrawn DE10042307A1 (en) 2000-08-29 2000-08-29 Fastening unit with an external screw thread is provided with a device which secures the fastening unit in a screw thread in one component and prevents its separation from another component

Country Status (1)

Country Link
DE (1) DE10042307A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004088153A1 (en) * 2003-04-02 2004-10-14 Autoliv Development Ab A fastening
WO2006079388A1 (en) 2005-01-27 2006-08-03 Schaeffler Kg Secured fixing screw

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1997148U (en) * 1968-08-17 1968-11-21 Gerhard Flechtner CAPTURAL SCREW MADE OF PLASTIC
EP0056625A2 (en) * 1981-01-21 1982-07-28 Nissan Motor Co., Ltd. Bolt with an anchor
US4810145A (en) * 1986-08-20 1989-03-07 Villas Hugo J Retractable and reusable self-locking fastener
WO1992018780A1 (en) * 1991-04-20 1992-10-29 Eberle Medizintechnische Elemente Gmbh Units provided with an external thread
DE19740320A1 (en) * 1997-09-13 1999-07-29 Voges Karsten Multipurpose fixing bolt
DE19833606A1 (en) * 1998-07-25 2000-02-17 Karsten Voges Multipurpose fixing bolt which is prevented from dropping out of hole has small diameter tip extension

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1997148U (en) * 1968-08-17 1968-11-21 Gerhard Flechtner CAPTURAL SCREW MADE OF PLASTIC
EP0056625A2 (en) * 1981-01-21 1982-07-28 Nissan Motor Co., Ltd. Bolt with an anchor
US4810145A (en) * 1986-08-20 1989-03-07 Villas Hugo J Retractable and reusable self-locking fastener
WO1992018780A1 (en) * 1991-04-20 1992-10-29 Eberle Medizintechnische Elemente Gmbh Units provided with an external thread
DE19740320A1 (en) * 1997-09-13 1999-07-29 Voges Karsten Multipurpose fixing bolt
DE19833606A1 (en) * 1998-07-25 2000-02-17 Karsten Voges Multipurpose fixing bolt which is prevented from dropping out of hole has small diameter tip extension

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004088153A1 (en) * 2003-04-02 2004-10-14 Autoliv Development Ab A fastening
US7530775B2 (en) 2003-04-02 2009-05-12 Autoliv Development Ab Fastener
WO2006079388A1 (en) 2005-01-27 2006-08-03 Schaeffler Kg Secured fixing screw

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