EP0547306B1 - Couvercle pour moteurs à combustion interne - Google Patents

Couvercle pour moteurs à combustion interne Download PDF

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Publication number
EP0547306B1
EP0547306B1 EP92116594A EP92116594A EP0547306B1 EP 0547306 B1 EP0547306 B1 EP 0547306B1 EP 92116594 A EP92116594 A EP 92116594A EP 92116594 A EP92116594 A EP 92116594A EP 0547306 B1 EP0547306 B1 EP 0547306B1
Authority
EP
European Patent Office
Prior art keywords
cover
sleeve
cover according
sleeves
openings
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.)
Expired - Lifetime
Application number
EP92116594A
Other languages
German (de)
English (en)
Other versions
EP0547306A1 (fr
Inventor
Werner Dipl.-Ing. Quentin
Bernd Dipl.-Ing. Stephan
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.)
SKF Sealing Solutions GmbH
Original Assignee
CR Elastomere 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
Priority claimed from DE4221760A external-priority patent/DE4221760C2/de
Application filed by CR Elastomere GmbH filed Critical CR Elastomere GmbH
Publication of EP0547306A1 publication Critical patent/EP0547306A1/fr
Application granted granted Critical
Publication of EP0547306B1 publication Critical patent/EP0547306B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/0054—Fastening to the cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/0062—Gaskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/02—Rubber
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49231—I.C. [internal combustion] engine making
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/49796—Coacting pieces
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49799—Providing transitory integral holding or handling portion

Definitions

  • the invention relates to a cover, in particular for internal combustion engines, with a flange surface and openings for carrying fastening screws, wherein structure-borne sound-insulating elastomer bodies are provided in the openings.
  • Such a cover is known from DE-A-3 639 218.
  • DE-OS 27 23 459 discloses an internal combustion engine with an oil pan connected to the crankcase to isolate structure-borne noise.
  • the fastening screws of the oil pan are embedded in an elastomer body, which extends with guide rings into the opening for the fastening screws.
  • fixed stops are provided on the oil pan and on the housing of the internal combustion engine.
  • elastomer bodies are pressed into the openings for the fastening screws for structure-borne sound insulation.
  • the elastomer bodies are manufactured separately and pressed into the openings in an additional operation.
  • the thread-free section of the fastening screw serves as a travel limiter for adjusting the pretensioning force of the seal.
  • the invention has for its object a to improve the generic lid with regard to automated assembly in such a way that a simpler and therefore less expensive assembly is possible, while at the same time a good recyclability of the lid is sought.
  • cylindrical sleeves are provided for receiving the fastening screws, which are positively connected to the cover via a formable rubber body. This creates a path limitation for the fastening screws, which do not exert any axial pressure on the structure-borne sound-insulating elements, so that the rubber preload is not changed when the fastening screws are tightened.
  • the sleeves are non-positively connected to the cover via a separation point before the rubber bodies are molded on.
  • the sleeves can be introduced into a mold at the same time as the cover.
  • the separation point is released and the rubber body can be injected.
  • the cover it is particularly cost-effective to design the cover so that the cover and sleeves are formed as a one-piece component before the rubber body is molded on are, and that a predetermined breaking point is provided between the cover and the sleeve.
  • a predetermined breaking point is provided between the cover and the sleeve.
  • the connecting web is designed as a closed ring web and is also arranged at the end region of the opening in the region of the flange surface, it forms after separation of the sleeve and Cover the broken off rest of the ring land an undercut, with the advantage that the injected rubber body can be arranged at the opening without the addition of adhesion promoters.
  • the positive connection created in this way can be separated again in a simple manner. The lid thus meets the requirement of good recyclability.
  • the sleeve is provided with a fuse that allows the screw to be captively connected to the cover.
  • a constriction is provided at the end region facing the screw head, so that the screw can be screwed into the sleeve, and thus all individual parts of the cover can be assembled as a component together with only one handling machine.
  • the inner peripheral surface of the opening and the outer peripheral surface of the sleeve are conical.
  • the cover (1) shown in FIG. 1 is made of aluminum and serves to cover the valve chamber (2) of the engine block (3) of an internal combustion engine.
  • the cover has a flange surface (4) for receiving a static seal (5) made of elastomeric material.
  • the cover is firmly connected to the engine block (3) by means of a plurality of fastening screws (6) arranged in the cover base, which are connected to the cover via sleeves (7) and structure-borne sound-insulating rubber bodies (8).
  • the rubber body (8) is positively connected to the sleeve, that is, the rubber body can be easily removed from the cover (1).
  • FIG 2 an aluminum blank of the cover (1) is shown.
  • the sleeve (7) is designed as part of the cover, that is, the sleeve was molded into the mold during the casting process of the cover.
  • the connection between cover (1) and sleeve (7) takes place via a thin, circumferential, closed ring web (9), which acts as a predetermined breaking point is trained.
  • the sleeve (7) is initially axially offset within the opening (10).
  • the end region (11) of the sleeve has been constricted.
  • the sleeve (7) is pressed axially into the opening (10). This process can take place in the vulcanizing tool during the closing process.
  • FIGS. 3 to 5 This process is illustrated in FIGS. 3 to 5 using a modified cover.
  • the cover (1 ') shown in FIG. 3 can also be provided as a cover for the valve chamber of an internal combustion engine.
  • the openings (10) for the fastening screws are only moved from the lid base to the lid edge.
  • the cover (1 ') initially lies with the sleeve (7') projecting axially from the opening (10) on the lower half (12) of the molding tool (FIG. 4).
  • the predetermined breaking point in the ring web (9) is released by axially pressing the cover (1 ') by means of the upper half (13) of the molding tool, and the sleeve (7') is inserted into the opening (10) relative to the cover (1 '). pressed.
  • FIG. 6 shows an assembled cover (1 '), all add-on parts, such as screw (6), sleeve (7'), rubber body (8) and the static seal (5) form an assembly which, when the cover (1 ') remain connected to each other by the engine block (3').
  • FIG. 7 shows a cover (1 '') with a modified opening (10 '). Axially above the predetermined breaking point, the opening (10 '') has a conical inner circumferential surface (14). The sleeve (7 '') is also conical (15) axially below the predetermined breaking point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (12)

  1. Couvercle (1, 1', 1'') en particulier pour moteur à combustion interne, avec une surface de bride (4) et des ouvertures (10, 10'') pour le passage de vis de fixation (6), des corps en élastomère isolant des bruits de structure étant prévus dans les ouvertures (10, 10''), caractérisé en ce que, pour la réception des vis de fixation (6), des douilles cylindriques (7, 7', 7'') sont prévues qui sont reliées au couvercle (1, 1', 1'') de manière adaptée en forme par un corps déformable en caoutchouc (8).
  2. Couvercle selon la revendication 1, caractérisé en ce que les douilles (7, 7', 7''), avant la déformation des corps en caoutchouc (8), sont reliées par adhérence au couvercle (1, 1', 1'') par un point de séparation.
  3. Couvercle selon les revendications 1 et 2, caractérisé en ce que, avant la déformation du corps en caoutchouc (8), le couvercle (1, 1', 1'') et les douilles (7, 7', 7'') sont réalisés sous la forme d'une pièce de montage monobloc, et en ce qu'un point destiné à la rupture est prévu entre le couvercle (1, 1', 1'') et les douilles (7, 7', 7'').
  4. Couvercle selon la revendication 3, caractérisé en ce que le point destiné à la rupture est disposé dans une bride de liaison entre la surface périphérique extérieure de la douille (7, 7', 7'') et la surface périphérique intérieure des ouvertures (10, 10'').
  5. Couvercle selon au moins une des revendications 3 à 4, caractérisé en ce que la douille (7, 7', 7'') est axialement coulissante dans l'ouverture (10 10'') pour rompre le point destiné à la rupture.
  6. Couvercle selon les revendications 1 à 5, caractérisé en ce que la douille (7, 7', 7'') est reliée au couvercle (1, 1', 1'') de mainière axialement décalée en direction de la surface de bride (4).
  7. Couvercle selon la revendication 4, caractérisé en ce que la bride de liaison est une bride annulaire fermée (9).
  8. Couvercle selon la revendication 7, caractérisé en ce que la bride annulaire (9) est disposée dans la zone d'extrémité de l'ouverture (10, 10'') dans la zone de la surface de bride (4).
  9. Couvercle selon les revendications 1 à 8, caractérisé en ce que la douille (7, 7', 7'') présente une sécurité (11), de telle sorte que les vis de fixation (6) peuvent être reliées à la douille (7, 7', 7'') de manière imperdable.
  10. Couvercle selon la revendication 9, caractérisé en ce que la sécurité (11) est réalisée sous la forme d'un resserrement et est disposée dans la zone d'extrémité dirigé vers la tête de vis (6).
  11. Couvercle selon au moins une des revendications 4 à 10, caractérisé en ce que les ouvertures (10'') présentent une surface périphérique interne (14) s'étendant coniquement.
  12. Couvercle selon les revendications 1 à 11, caractérisé en ce que la douille (7'') présente une surface périphérique extérieure (15) s'étendant coniquement.
EP92116594A 1991-12-17 1992-09-29 Couvercle pour moteurs à combustion interne Expired - Lifetime EP0547306B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4141576 1991-12-17
DE4141576 1991-12-17
DE4221760A DE4221760C2 (de) 1991-12-17 1992-07-02 Körperschallisolierter Deckel, insbesondere für Brennkraftmaschinen
DE4221760 1992-07-02

Publications (2)

Publication Number Publication Date
EP0547306A1 EP0547306A1 (fr) 1993-06-23
EP0547306B1 true EP0547306B1 (fr) 1995-09-20

Family

ID=25910171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116594A Expired - Lifetime EP0547306B1 (fr) 1991-12-17 1992-09-29 Couvercle pour moteurs à combustion interne

Country Status (5)

Country Link
US (1) US5368797A (fr)
EP (1) EP0547306B1 (fr)
JP (1) JPH05248594A (fr)
AT (1) ATE128207T1 (fr)
ES (1) ES2077318T3 (fr)

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US20140042704A1 (en) * 2012-08-09 2014-02-13 GM Global Technology Operations LLC Seal aligning and retaining assembly and method of retaining a seal
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US9388838B2 (en) 2013-04-04 2016-07-12 GM Global Technology Operations LLC Elastic retaining assembly for matable components and method of assembling
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US9278642B2 (en) 2013-04-04 2016-03-08 GM Global Technology Operations LLC Elastically deformable flange locator arrangement and method of reducing positional variation
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US9447840B2 (en) 2013-06-11 2016-09-20 GM Global Technology Operations LLC Elastically deformable energy management assembly and method of managing energy absorption
US9243655B2 (en) 2013-06-13 2016-01-26 GM Global Technology Operations LLC Elastic attachment assembly and method of reducing positional variation and increasing stiffness
US9488205B2 (en) 2013-07-12 2016-11-08 GM Global Technology Operations LLC Alignment arrangement for mated components and method
US9303667B2 (en) 2013-07-18 2016-04-05 Gm Global Technology Operations, Llc Lobular elastic tube alignment system for providing precise four-way alignment of components
US9863454B2 (en) 2013-08-07 2018-01-09 GM Global Technology Operations LLC Alignment system for providing precise alignment and retention of components of a sealable compartment
US9458876B2 (en) 2013-08-28 2016-10-04 GM Global Technology Operations LLC Elastically deformable alignment fastener and system
US9463831B2 (en) 2013-09-09 2016-10-11 GM Global Technology Operations LLC Elastic tube alignment and fastening system for providing precise alignment and fastening of components
US9457845B2 (en) 2013-10-02 2016-10-04 GM Global Technology Operations LLC Lobular elastic tube alignment and retention system for providing precise alignment of components
US9511802B2 (en) 2013-10-03 2016-12-06 GM Global Technology Operations LLC Elastically averaged alignment systems and methods
US9669774B2 (en) 2013-10-11 2017-06-06 GM Global Technology Operations LLC Reconfigurable vehicle interior assembly
US9481317B2 (en) 2013-11-15 2016-11-01 GM Global Technology Operations LLC Elastically deformable clip and method
US9447806B2 (en) 2013-12-12 2016-09-20 GM Global Technology Operations LLC Self-retaining alignment system for providing precise alignment and retention of components
US9428123B2 (en) 2013-12-12 2016-08-30 GM Global Technology Operations LLC Alignment and retention system for a flexible assembly
US9216704B2 (en) 2013-12-17 2015-12-22 GM Global Technology Operations LLC Elastically averaged strap systems and methods
US9599279B2 (en) 2013-12-19 2017-03-21 GM Global Technology Operations LLC Elastically deformable module installation assembly
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Also Published As

Publication number Publication date
EP0547306A1 (fr) 1993-06-23
ES2077318T3 (es) 1995-11-16
ATE128207T1 (de) 1995-10-15
JPH05248594A (ja) 1993-09-24
US5368797A (en) 1994-11-29

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