EP1711691A1 - Dispositif de liaison pour levier de commande et element d'appui d'un mecanisme d'actionnement de soupape d'un moteur a combustion interne - Google Patents

Dispositif de liaison pour levier de commande et element d'appui d'un mecanisme d'actionnement de soupape d'un moteur a combustion interne

Info

Publication number
EP1711691A1
EP1711691A1 EP05714915A EP05714915A EP1711691A1 EP 1711691 A1 EP1711691 A1 EP 1711691A1 EP 05714915 A EP05714915 A EP 05714915A EP 05714915 A EP05714915 A EP 05714915A EP 1711691 A1 EP1711691 A1 EP 1711691A1
Authority
EP
European Patent Office
Prior art keywords
actuating lever
connecting device
opening
spherical
lower leg
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.)
Granted
Application number
EP05714915A
Other languages
German (de)
English (en)
Other versions
EP1711691B1 (fr
Inventor
Manfred GÜNTHNER
Martin JÄKEL
Stephan Ernstberger
Franz-Holger Woitowitz
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.)
IHO Holding GmbH and Co KG
Original Assignee
Innotec Forschungs und Entwicklungs GmbH
Schaeffler KG
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 Innotec Forschungs und Entwicklungs GmbH, Schaeffler KG filed Critical Innotec Forschungs und Entwicklungs GmbH
Publication of EP1711691A1 publication Critical patent/EP1711691A1/fr
Application granted granted Critical
Publication of EP1711691B1 publication Critical patent/EP1711691B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L2001/187—Clips, e.g. for retaining rocker arm on pivot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20402—Flexible transmitter [e.g., Bowden cable]
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2107—Follower

Definitions

  • the invention relates to a connecting device for pivotally movable and captive connection of an actuating lever and a support element of a mechanical valve control of an internal combustion engine.
  • a connecting device is known from DE 196 17 523 A1, in which such an actuating lever and a supporting element assigned to it are pivotally and captively connected by means of a securing element.
  • This connecting device is particularly advantageous since these assembly problems can be avoided in the manufacture of a mechanical valve control of an internal combustion engine.
  • the securing element known from this publication is designed as a sheet metal retaining clip, wire retaining bracket or plastic retaining cap, which inter alia engages in a backstitch in the supporting element below the spherical end of the same.
  • this securing element has an essentially U-shaped cross-sectional geometry and holds two legs that are connected to each other via a connecting section. The first leg with a closed surface is attached to the rocker arm above a receiving cap, while the second, fork-shaped leg engages in the undercut of the support element projecting into the cap.
  • both legs have retaining lugs at their free ends, with which the securing element can be locked captively on the rocker arm and on the supporting element.
  • the two legs have circular or U-shaped receiving openings in the region of their free ends. While the lower leg of this securing element engages the supporting element, the upper leg with its receiving opening comprises part of the spherical upper side of the receiving dome in which the likewise spherically shaped upper side of the supporting element is mounted in the sense of a ball and socket joint.
  • a disadvantage of this connecting device is that the support element is held by the sheet metal holding clip only in the manner of pliers and by means of frictional engagement. Since it is not intended to intervene in an undercut of the support element which is not present here, in the case of stronger mechanical loads If the rocker arm and support element fall apart.
  • the invention has for its object to provide a connecting device for a rocker arm support element connection, which is suitable for rocker arms with different rocker arm geometries in the connection area to the support element.
  • this connecting device is intended to ensure a secure, articulated and captive connection between the rocker arm and the support element, even with greater mechanical loads.
  • the securing element of the connecting device which realizes the mechanical connection between these two components, should have a low tendency to get caught when it is stored in a container with other securing elements, and it should be possible to mount it automatically and to produce it inexpensively.
  • the invention relates to a connecting device for the pivotally movable and captive connection of an actuating lever and a support element associated therewith of a valve control of an internal combustion engine, in which the actuating lever has a spherical recess in a support section, in which the spherical end of the support element is arranged, in which below its spherical Finally, an undercut is formed in the support element, in which the actuation lever has a spherical geometry in the support section above the spherical recess, and in which a securing element connects the actuation lever and the support element to one another.
  • the securing element has a U-shaped cross-sectional geometry, an upper and a lower leg are connected to one another via a connecting section. Geometrically closed openings for receiving the backstitch of the support element or the spherical upper side of the support section of the actuating lever are also formed in the legs.
  • the opening in the upper leg is essentially round and in the lower leg essentially slit-shaped.
  • the actuating lever is designed as a rocker arm and the support element as an axially movable piston.
  • the securing element it is considered to be advantageous if its material thickness is below the width of the backstitch, so that the backstitch can move freely in all pivoting positions of the actuating lever.
  • the legs and in particular the connecting section of the securing element are smooth, which reduces the tendency of such a securing element to get caught in an assembly storage container and promotes easy attachment to the actuating lever and to the supporting element.
  • the closed surface of the connecting section allows this component to be gripped with an automatic assembly suction gripper.
  • the attachment of the securing element to the actuating lever between its side walls is facilitated if the legs of the securing element have insertion bevels in the region of their free ends, through which these legs are quasi pointed.
  • a further simplification of assembly when assembling the actuating lever and support element can be achieved in a further development of the invention in that the free ends of the legs are designed to point away from each other.
  • the fixing of the securing element on the support element is also favored if the slot-shaped opening in the lower leg has a stadium-like geometry, in which two mutually parallel opening sections are connected by semicircular opening sections.
  • this opening in the lower leg which is necessary for plugging the securing element onto the supporting element, is further facilitated if an elongated hole-like extension of the opening with a preferably small opening width is formed on at least one of the semicircular opening sections mentioned.
  • the partial sections of the lower leg can rotate relative to one another more easily when they are axially attached to the support element, so that the opening cross section increases briefly.
  • the original smooth surface of the lower leg re-forms, so that this leg then engages captively in the undercut of the support element.
  • the opening in the upper leg of the securing element is designed such that it finds a secure hold on the spherical, that is to say, for example, spherical head-shaped, upper side of the support section of the actuating lever.
  • the opening width in the lower leg transverse to its longitudinal extent is smaller than the diameter of the opening of the upper leg.
  • This combination ensures that with a given undercut depth there is sufficient hold on the spherical upper side of the actuating lever, or a sufficiently large undercut depth can be used with a given opening diameter in the upper leg. It is essential for a secure hold that the width of the opening in the lower leg transverse to the longitudinal extension thereof is smaller than the diameter of the support element above and below the understitch.
  • the upper leg is axially shorter than the lower leg in this securing element.
  • Another aspect relates to the distance between the two legs of the securing element. It is preferably provided that the connecting radius between the lower leg and the connecting section is smaller than the connecting radius between the same and the upper leg.
  • the invention provides that the distance between the lower leg and the upper leg of the securing element near the connecting section is greater than in the region of the free end of the two legs.
  • FIG. 1 shows a schematic side view of a rocker arm
  • FIG. 2 shows a top view of the rocker arm according to FIG. 1
  • FIG. 3 shows a cross-sectional view AA according to FIG. 2
  • 4 shows a perspective view of a securing element for connecting the rocker arm to a supporting element
  • FIG. 5 shows a side view of the securing element according to FIG. 4
  • FIG. 6 shows a top view of the upper side of the securing element according to FIG. 4
  • FIG. 7 shows a top view of the underside of the securing element 4.
  • FIGS. 1 to 3 show an actuating lever designed as a rocker arm 1 of a mechanical valve control of an internal combustion engine which is known and described at the outset.
  • This rocker arm 1 is pivotable about a pivot axis 2 and has a support section 3, in which a spherical upper side 4 of a spherical recess 5 is formed between two wall sections of the rocker arm 1.
  • the dome-shaped recess 5 accommodates a support element 6 for the rocker arm 1, which is designed here as an axially movable piston of a piston-cylinder arrangement (not shown).
  • the support element 6 has a spherically shaped upper side 7 which fits exactly into the spherical recess 5 of the rocker arm 1. Underneath this upper side 7, an undercut 8 is formed in the support element 6, which serves to receive the securing element 9 shown in FIG. 4.
  • This securing element 9 is designed here as a sheet metal component and has an upper leg 10 and a lower leg 11, which are connected to one another via a connecting section 12.
  • the securing element 9 As the perspective illustration of the securing element 9 according to FIG. 4 illustrates, there are geometrically closed openings in the two legs 10, 11 trained, the function of which is explained with reference to Figures 5 to 7. It is important that the opening in the upper leg 10 is essentially circular and in the lower leg 11 is essentially slit-shaped. In addition, it is clear that the material webs engage on both sides of the elongated opening in the lower leg 11 in the undercut 8 of the support element 6, while the circular opening in the upper leg 10 is supported on the spherical upper side 4 of the rocker arm 1.
  • the securing element 9 consists of a bent and inherently smooth sheet metal, in which a connecting section 12 connects an upper leg 10 and a lower leg 11 to one another.
  • the securing element 9 is formed from a flat piece of sheet metal such that the bending or connecting radius between the lower leg 11 and the connecting section 12 is smaller than the bending or connecting radius between the same and the upper leg 10.
  • FIG. 5 also discloses that the securing element 9 is shaped in such a way that the distance L2 between the upper leg 10 and the lower leg 11 in the region of the connecting section 12 is greater than the distance L1 in the region of the free ends 15, 16 of the same. This non-parallel alignment of the two legs 10, 11 results in a further increased mechanical pretensioning of the securing element 9 for connecting the rocker arm 1 and the supporting element 6.
  • FIG. 5 also shows that the free ends 15, 16 of the two legs 10, 11 point away from one another, which enables this securing element to be mounted more easily for the pivotable and captive connection of an actuating lever 1 to the supporting element 6.
  • the receiving openings in the two legs 10, 11 of the securing element 9 have different diameters and geometries, but both openings are not geometrically closed, but rather geometrically closed.
  • the opening 13 in the upper leg 10 has an essentially circular geometry, as a result of which the spherically shaped upper side 4 of the support section 3 of the rocker arm 1 is well received there, or the securing element 9 can be supported there securely.
  • the opening 14 in the lower leg 11 is essentially slit-shaped and, in the embodiment shown here, has a stadium-like design, two essentially parallel opening sections being connected to one another via two semicircular opening sections.
  • elongated hole-like extensions 21, 22 are additionally formed on the semicircular opening sections, which ensure that the supporting element 6 is slipped on easily and that this lower leg 11 is easily clipped into the undercut 8 of the same.
  • insertion bevels 17, 18, 19, 20 are formed on the free ends 15, 16 of the two legs 10, 11, which allow the securing element 9 to be inserted easily between the side walls of the rocker arm 1, which can be clearly seen in particular in FIG. 3 ,
  • the diameter D1 of the opening 13 in the upper leg 10 is chosen to be larger than the opening width D2 in the lower leg 11 transverse to its longitudinal extent. This combination ensures that a sufficient hold on the spherical top of the rocker arm is achieved with a given undercut depth, or a sufficiently large undercut depth can be used with a given diameter of the opening 13 on the top of the rocker arm 1.
  • FIGS. 5 to 7 show that the upper leg 10 is axially shorter than the lower leg 11.
  • the somewhat longer lower leg 11 enables a comparatively long slot-shaped opening 14, which favors the centering of the securing element 6 and rocker arm 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

La présente invention concerne un dispositif de liaison destiné à relier, en permettant le pivotement et en prévenant les risques de pertes, un levier de commande (1) et un élément d'appui (6), associé à celui-ci, d'un mécanisme de commande de soupape d'un moteur à combustion interne. Selon l'invention: le levier de commande (1) présente dans une partie d'appui (3), un évidement (5) en forme de calotte, dans lequel se trouve l'extrémité sphérique (7) de l'élément d'appui (6); une encoche (8) est formée dans l'élément d'appui (6), en-dessous de l'extrémité sphérique (7); le levier de commande (1) présente, dans la partie d'appui (3), au-dessus de l'évidement (5) en forme de calotte, un côté supérieur sphérique (4); et un élément de sûreté (9) relie le levier de commande (1) et l'élément d'appui (6), l'élément de sûreté (9) ayant une géométrie de section transversale en forme de U avec une branche supérieure et une branche inférieure (10, 11) qui sont reliées entre elles par une partie de liaison (12), et des ouvertures (13, 14) géométriquement fermées, pratiquées dans les deux branches (10, 11), servant à recevoir l'encoche (8) de l'élément d'appui (6) ou du côté supérieur sphérique (4) de la partie d'appui (3) du levier de commande (1), l'ouverture (13) formée dans la branche supérieure (10) étant sensiblement arrondie, et l'ouverture (14) formée dans la branche inférieure (11), associée à l'élément d'appui (6), étant sensiblement en forme de fente.
EP05714915A 2004-02-06 2005-02-01 Dispositif de liaison pour levier de commande et element d'appui d'un mecanisme d'actionnement de soupape d'un moteur a combustion interne Expired - Fee Related EP1711691B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004005831A DE102004005831A1 (de) 2004-02-06 2004-02-06 Verbindungsvorrichtung für einen Betätigungshebel und ein Abstützelement einer Ventilsteuerung einer Brennkraftmaschine
PCT/DE2005/000153 WO2005075795A1 (fr) 2004-02-06 2005-02-01 Dispositif de liaison pour levier de commande et element d'appui d'un mecanisme d'actionnement de soupape d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1711691A1 true EP1711691A1 (fr) 2006-10-18
EP1711691B1 EP1711691B1 (fr) 2008-04-23

Family

ID=34801659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05714915A Expired - Fee Related EP1711691B1 (fr) 2004-02-06 2005-02-01 Dispositif de liaison pour levier de commande et element d'appui d'un mecanisme d'actionnement de soupape d'un moteur a combustion interne

Country Status (5)

Country Link
US (2) US20070131052A1 (fr)
EP (1) EP1711691B1 (fr)
CN (1) CN100432377C (fr)
DE (2) DE102004005831A1 (fr)
WO (1) WO2005075795A1 (fr)

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DE102006048342A1 (de) * 2006-10-12 2008-04-17 Schaeffler Kg Schlepphebel
JP5186170B2 (ja) * 2007-10-05 2013-04-17 矢崎総業株式会社 導電部材、その導電部材を有するコネクタ
DE102008029293A1 (de) 2008-06-19 2009-12-24 Schaeffler Kg Verbindungselement zur verliersicheren Halterung eines hebelartigen Nockenfolgers
DE102008052281B4 (de) * 2008-10-18 2020-01-16 Schaeffler Technologies AG & Co. KG Hebelartiger Nockenfolger zur Betätigung eines Gaswechselventils einer Brennkraftmaschine
JP5355299B2 (ja) * 2009-08-19 2013-11-27 株式会社オティックス 連結部材
BR112012007143A2 (pt) 2009-09-29 2016-08-23 NagraID Security SA dispositivo eletrônico portátil, particularmente um cartão eletrônico, fornecido com um interruptor óptico
DE102012221516A1 (de) * 2012-11-26 2014-05-28 Schaeffler Technologies Gmbh & Co. Kg Halteklammer für Motorkomponenten
JP2018058383A (ja) * 2016-09-30 2018-04-12 トヨタ自動車株式会社 車両下部構造
DE102016220941A1 (de) * 2016-10-25 2018-04-26 Schaeffler Technologies AG & Co. KG Ventilbetätigungshebel und dessen Herstellung für Hubkolbenbrennkraftmaschinen
DE102018002671A1 (de) * 2018-03-31 2019-10-02 Wabco Europe Bvba Vorrichtung zum Verbinden eines Betätigungshebels mit einem Steuerschieber eines Steuerventils
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Also Published As

Publication number Publication date
CN1930375A (zh) 2007-03-14
CN100432377C (zh) 2008-11-12
US20070131052A1 (en) 2007-06-14
WO2005075795A1 (fr) 2005-08-18
US8434441B2 (en) 2013-05-07
DE112005000102D2 (de) 2006-08-17
US20110214527A1 (en) 2011-09-08
DE102004005831A1 (de) 2005-08-25
EP1711691B1 (fr) 2008-04-23

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