EP1956198A1 - Rocker arm with a lever body formed from folded metal sheet - Google Patents
Rocker arm with a lever body formed from folded metal sheet Download PDFInfo
- Publication number
- EP1956198A1 EP1956198A1 EP08150587A EP08150587A EP1956198A1 EP 1956198 A1 EP1956198 A1 EP 1956198A1 EP 08150587 A EP08150587 A EP 08150587A EP 08150587 A EP08150587 A EP 08150587A EP 1956198 A1 EP1956198 A1 EP 1956198A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- longitudinal
- crossbar
- lever body
- lever
- longitudinal webs
- 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
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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
- F01L1/185—Overhead end-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
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- 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
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- 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
- F01L2305/00—Valve arrangements comprising rollers
Definitions
- the invention relates to a drag lever for actuating a charge cycle of an internal combustion engine controlling Tellerhubventils.
- the rocker arm has an elongated lever body formed from sheet material, which forms a substantially U-shaped and upwardly open cross-sectional profile in the region of a valve-side end portion with spaced-apart side walls and a crossbar connecting the side walls.
- a valve actuating surface which is lined by two serving for lateral guidance of the lever body on the shaft of the Tellerhubventils longitudinal webs, which are bent as an extension of the crossbar of this starting on the bottom, and the lever body has in one Central portion of a limited by an inner longitudinal end face of the crossbeam opening.
- Such a drag lever goes out of the class considered as generic DE 195 43 657 A1 out.
- the rocker arm proposed there has a lever body with longitudinal webs, which extend as an extension of the crossbar of the valve-side longitudinal end face of the lever body and bent by about 180 ° to the underside of the crossbar.
- the present invention is therefore the object of a drag lever of the type mentioned in such a way that the disadvantages are eliminated by simple means.
- the drag lever is intended to have the lowest possible moment of inertia around its pivot point and, with respect to the sheet metal forming process, improved material utilization, in particular with constant or improved guiding properties on the shank of the plate lifting valve.
- the longitudinal webs should be bent starting from the inner longitudinal end side of the crossbar on the underside thereof.
- An essential and with reference to the later explained figures of an embodiment of the invention obvious advantage of such a finger lever is that the accumulation of material, which is caused by the adjoining the transom, arcuate portions of the longitudinal webs, extending in the region of the central portion of the lever body and thus a Having comparatively small distance to the pivot point of the finger lever in favor of a lower moment of inertia around the fulcrum.
- Another advantage of the finger lever according to the invention relates to the Blechumform remedies because now originate on the one hand, the longitudinal webs of the opening in the central portion of the lever body, while according to the cited prior art, the material corresponding to the opening in its entirety obtained as punching waste.
- the material corresponding to the opening in its entirety obtained as punching waste.
- this distance is no longer determined by the function-related length of the longitudinal webs.
- the longitudinal webs are welded at their end portions to the underside.
- cohesive connections such as bonding or soldering of the longitudinal webs with the underside, or a form-fitting acting in the transverse direction of the rocker arm support, such as outside on the bottom extending steps or projections on which the longitudinal webs are supported in each case to the outside.
- the opening serves as clearance for a roller, which supported on a aligned in alignment pin bosses of the side walls bolt by means of either Rolling elements is stored.
- the cam can still be provided a rigid sliding surface which extends opposite the opening in the region of an upper side of the lever body.
- the rocker arm according to the invention may of course also be part of a fully variable mechanical valve control, in which it does not interact directly with the cam, but with other Hubübertragungsgliedern, for example in the form of an intermediate lever arranged between the cam and the rocker arm.
- the longitudinal webs should have a variable in the longitudinal direction of the lever body clearance, which is smaller than the shaft diameter of the Tellerhubventils in the region of the inner longitudinal end face of the crossbar.
- Such shaped longitudinal webs serve not only the lateral guidance of the lever body on the shaft of the Tellerhubventils, but also as a longitudinal stop, which can prevent a leaking of the drag lever of its pivot bearing in the direction of the Tellerhubventils under extreme operating conditions of the internal combustion engine.
- the sheet height of the longitudinal webs is smaller than the sheet height of the crossbar.
- Such a material thickness ratio may be advantageous in particular with regard to a reduction of the shear forces occurring during the punching of the opening both on the tool and on the workpiece, since the longitudinal webs at this stage of the sheet metal forming process still extend unbent into the opening and a correspondingly profiled and thus highly stressed punching tool is required.
- the local reduction of the sheet height in the region of the later resulting opening then takes place in a punching preceded forming step, in which the sheet metal material still present in the region of the opening at this time is preferably reduced in its material thickness by embossing.
- FIG. 1 is an inventive drag lever 1 for actuating a charge cycle of an internal combustion engine controlling, but not shown here Tellerhubventils disclosed in a perspective bottom view.
- the symmetrical to its longitudinal central plane drag lever 1 has a one-piece, formed from sheet metal and elongated lever body 2 with a valve-side end portion 3 and a joint-side end portion 4 and is about a dome-shaped socket 5 in a known manner on a likewise not shown here, stationary in the Internal combustion engine arranged pivot bearing with spherical condyle supported pivotally.
- a clipped on lever body 2 retaining clip 6 is provided to summarize the drag lever 1 and the pivot bearing in a known manner to a captive mounting unit.
- valve-side end portion 3 and the hinge-side end portion 4 are connected to each other by two spaced-apart side walls 7.
- the side walls 7 have in a central portion 8 of the lever body 2 mutually aligned pin bosses 9, in which a roll 10 bearing bolt 11 is supported.
- the bolt 11 is fixedly connected in a known manner by end-side caulking of its ends with the lever body 2.
- FIGS. 2 to 4 it can be seen forms the lever body 2 in the region of the valve-side end portion 3 with the side walls 7 and a crossbar 12 connecting them a substantially U-shaped and upwardly open cross-sectional profile.
- a Tellerhubventil 13 facing bottom 14 of the crossbar 12, a valve actuating surface 15 which is lined by two longitudinal webs 16.
- the longitudinal webs 16 serve the lateral guidance of the lever body 2 on the shank of the Tellerhubventils 13, since the cam follower 1 is known to be secured neither on its pivotal mounting nor serving on its serving as a drive roller 10 against rotation about the vertical axis.
- FIG. 1 Like it out FIG.
- FIG. 2 in which the drag lever 1 and the here formed as a support element with hydraulic valve clearance compensation pivot bearing 17 in longitudinal section, the shaft of the Tellerhubventils 13 and a roller 10 actuating cam 18 are shown, is particularly clear, which are about 180 ° on the bottom 14th of the crossbar 12 curved longitudinal webs 16 formed as an extension of the crossbar 12 and go according to the invention of an inner longitudinal end face 19 of the crossbar 12 from.
- the inner longitudinal end face 19 delimits an opening 20 extending in the middle section 8 of the lever body 2, which also ensures the clearance of the roller 10 within the lever body 2.
- FIG. 2 is also apparent that the roller 10 is mounted by means of rolling elements 21, here in the form of a needle set on the bolt 11.
- the longitudinal webs 16 a cranked in the longitudinal direction of the lever body 2 course with variable clear distance 22, which is smaller in the region of the inner longitudinal end face 19 of the lever body 2 as in FIG. 2 drawn in and in FIG. 3 hatched diameter shown 23 of the Tellerhubventils 13 is hatched.
- This longitudinal stop not just a complete one Prevent jumping off of the finger lever 1, but also its provision in the working position according to FIG. 2 support.
- the lever body 2 is shown in a late intermediate stage of Blechumformreaes in plan view and in longitudinal section.
- the lever body 2 with the molded joint socket 5 the U-shape upturned side walls 7 including pin bosses 9 and with its longitudinal profile already extensive Endkonture forum.
- the longitudinal webs 16 functionally a considerable elongated length, which previously corresponds to the longitudinal distance of the prepared in a step process and initially contiguous lever body 2. Due to the fact that the longitudinal webs 16 now initially extend within the opening 20, the longitudinal spacing of the lever bodies 2 and consequently the stamping waste arising in the region of the longitudinal spacing can also be significantly reduced in favor of lower production costs.
- FIG. 6 To increase the service life of the E-shaped profiled punching tool, it is according to FIG. 6 provided to reduce the original plate thickness in the region of the opening 20 by a stamping of the opening 20 upstream embossing step, so that the denoted 26 sheet height of the longitudinal webs 16 is smaller than the original sheet thickness largely corresponding plate height 27 of the crossbar 12.
- this measure will not only reduces the shear forces during the stamping process, but also facilitates the subsequent bending of the longitudinal webs 16 on the underside 14 of the crossbar 12 and also allows a smaller bending radius in the region of 180 ° bend.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Die Erfindung betrifft einen Schlepphebel zur Betätigung eines den Ladungswechsel einer Brennkraftmaschine steuernden Tellerhubventils. Der Schlepphebel weist einen aus Blechwerkstoff umgeformten länglichen Hebelkörper auf, der im Bereich eines ventilseitigen Endabschnitts mit voneinander beabstandet verlaufenden Seitenwänden und einem die Seitenwände verbindenden Querbalken ein im wesentlichen U-förmiges und nach oben offenes Querschnittsprofil bildet. Auf einer dem Tellerhubventil zugewandten Unterseite des Querbalkens verläuft eine Ventilbetätigungsfläche, die von zwei zur seitlichen Führung des Hebelkörpers auf dem Schaft des Tellerhubventils dienenden Längsstegen gesäumt ist, welche als Verlängerung des Querbalkens von diesem ausgehend auf die Unterseite gebogen sind, und der Hebelkörper weist in einem Mittelabschnitt eine von einer inneren Längsstirnseite des Querbalkens begrenzte Öffnung auf.The invention relates to a drag lever for actuating a charge cycle of an internal combustion engine controlling Tellerhubventils. The rocker arm has an elongated lever body formed from sheet material, which forms a substantially U-shaped and upwardly open cross-sectional profile in the region of a valve-side end portion with spaced-apart side walls and a crossbar connecting the side walls. On a the Tellerhubventil facing the underside of the cross bar extends a valve actuating surface which is lined by two serving for lateral guidance of the lever body on the shaft of the Tellerhubventils longitudinal webs, which are bent as an extension of the crossbar of this starting on the bottom, and the lever body has in one Central portion of a limited by an inner longitudinal end face of the crossbeam opening.
Ein derartiger Schlepphebel geht aus der als gattungsbildend betrachteten
Als Alternative hierzu ist es in der
Ein weiterer Nachteil derartiger Schlepphebel betrifft den Fertigungsprozess, bei dem die aus einem Blechstreifen ausgestanzten Blechrohlinge für die Hebelkörper oftmals zunächst noch durch die Längsstege miteinander verbunden sind, so dass im Bereich der flächenarmen Längsstege ein erheblicher, die Fertigungskosten erhöhender Stanzabfall entsteht.Another disadvantage of such drag levers relates to the manufacturing process, in which the sheet metal blanks punched out of a sheet metal strip for the lever body are often initially connected by the longitudinal webs, so that in the area of the low-area longitudinal webs a significant, the production costs increasing punching waste arises.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Schlepphebel der eingangs genannten Art so fortzubilden, dass die geschilderten Nachteile mit einfachen Mitteln beseitigt sind. Der Schlepphebel soll insbesondere bei konstanten oder verbesserten Führungseigenschaften auf dem Schaft des Tellerhubventils ein möglichst geringes Massenträgheitsmoment um seinen Drehpunkt sowie eine, bezogen auf den Blechumformprozess, verbesserte Materialausnutzung aufweisen.The present invention is therefore the object of a drag lever of the type mentioned in such a way that the disadvantages are eliminated by simple means. The drag lever is intended to have the lowest possible moment of inertia around its pivot point and, with respect to the sheet metal forming process, improved material utilization, in particular with constant or improved guiding properties on the shank of the plate lifting valve.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst, während vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung den Unteransprüchen entnehmbar sind. Demnach sollen die Längsstege von der inneren Längsstirnseite des Querbalkens ausgehend auf dessen Unterseite gebogen sein. Ein wesentlicher und anhand der später erläuterten Figuren eines Ausführungsbeispiels der Erfindung offensichtlicher Vorteil eines derartigen Schlepphebels besteht darin, dass die Materialanhäufung, die durch die sich an den Querbalken anschließenden, bogenförmigen Abschnitte der Längsstege bedingt ist, im Bereich des Mittelabschnitts des Hebelkörpers verläuft und folglich einen vergleichsweise kleinen Abstand zum Drehpunkt des Schlepphebels zugunsten eines geringeren Massenträgheitsmoments um den Drehpunkt aufweist. Ein weiterer Vorteil des erfindungsgemäßen Schlepphebels bezieht sich auf den Blechumformprozess, da nunmehr einerseits die Längsstege der Öffnung im Mittelabschnitt des Hebelkörpers entstammen, während gemäß dem zitierten Stand der Technik das der Öffnung entsprechende Material in vollem Umfang als Stanzabfall anfällt. Andererseits kann im Falle der in einem Stufenprozess umgeformten und zunächst noch aneinanderhängenden Blechrohlinge für die Hebelkörper deren Abstand zugunsten eines weiter reduzierten Stanzabfalls verringert werden, da dieser Abstand nun nicht mehr durch die funktionsbedingte Länge der Längsstege vorgegeben ist.According to the invention this object is solved by the features of the characterizing part of
Um eine stabile Befestigung der Endabschnitte der Längsstege am Querbalken zu gewährleisten, ist es in Weiterbildung der Erfindung vorgesehen, dass die Längsstege an ihren Endabschnitten mit der Unterseite verschweißt sind. Hierzu alternative Befestigungsmöglichkeiten sind stoffschlüssige Verbindungen, wie Verkleben oder Verlöten der Längsstege mit der Unterseite, oder auch eine formschlüssig in Querrichtung des Schlepphebels wirkende Abstützung, wie beispielsweise außen an der Unterseite verlaufende Stufen oder Vorsprünge, an denen sich die Längsstege jeweils nach außen hin abstützen.In order to ensure a stable attachment of the end portions of the longitudinal webs on the crossbar, it is provided in a further development of the invention that the longitudinal webs are welded at their end portions to the underside. For this alternative mounting options are cohesive connections, such as bonding or soldering of the longitudinal webs with the underside, or a form-fitting acting in the transverse direction of the rocker arm support, such as outside on the bottom extending steps or projections on which the longitudinal webs are supported in each case to the outside.
Im Hinblick auf einen reibungsarmen Betrieb des Schlepphebels, der in der Regel unmittelbar von einem Nocken einer Nockenwelle angetrieben wird, ist es außerdem zweckmäßig, wenn die Öffnung als Freigang für eine Rolle dient, die auf einem in zueinander fluchtenden Bolzenaugen der Seitenwände abgestützten Bolzen wahlweise mittels Wälzkörpern gelagert ist. Anstelle eines solchen Wälzkontakts zum Nocken kann dennoch auch eine starre Gleitfläche vorgesehen sein, die sich der Öffnung gegenüberliegend im Bereich einer Oberseite des Hebel körpers erstreckt.In view of a low-friction operation of the finger lever, which is usually driven directly by a cam of a camshaft, it is also expedient if the opening serves as clearance for a roller, which supported on a aligned in alignment pin bosses of the side walls bolt by means of either Rolling elements is stored. Instead of such Wälzkontakts the cam can still be provided a rigid sliding surface which extends opposite the opening in the region of an upper side of the lever body.
Der erfindungsgemäße Schlepphebel kann selbstverständlich auch Teil einer vollvariablen mechanischen Ventilsteuerung sein, bei welcher er nicht unmittelbar mit dem Nocken, sondern mit anderen Hubübertragungsgliedern, beispielsweise in Form eines zwischen dem Nocken und dem Schlepphebel angeordneten Zwischenhebels zusammenwirkt.The rocker arm according to the invention may of course also be part of a fully variable mechanical valve control, in which it does not interact directly with the cam, but with other Hubübertragungsgliedern, for example in the form of an intermediate lever arranged between the cam and the rocker arm.
Ferner sollen die Längsstege einen in Längsrichtung des Hebelkörpers veränderlichen lichten Abstand aufweisen, der im Bereich der inneren Längsstirnseite des Querbalkens kleiner als der Schaftdurchmesser des Tellerhubventils ist. Derartig geformte Längsstege dienen nicht nur der seitlichen Führung des Hebelkörpers auf dem Schaft des Tellerhubventils, sondern auch als Längsanschlag, der bei extremen Betriebsbedingungen der Brennkraftmaschine ein Abspringen des Schlepphebels von seinem Schwenklager in Richtung des Tellerhubventils verhindern kann. Ein solches Abspringen des Schlepphebels, das zu erheblichen Beschädigungen bis hin zur vollständigen Zerstörung der Brennkraftmaschine führen kann, tritt vorwiegend bei Einsatz von Schwenklagern mit hydraulischem Ventilspielausgleich und unzureichender Druckmittelversorgung, wie z.B. bei hoher Ölverschäumung oder einem zu geringen Versorgungsdruck, und/oder bei unzulässig hohen Drehzahlen der Brennkraftmaschine auf. Im Falle eines dann bereits eingeleiteten Abspringvorgangs des Schlepphebels dienen die anschließend am Schaft des Tellerhubventils längsanschlagenden Längsstege zumindest der Risikominimierung eines vollständigen Abspringens des Schlepphebels vom Schwenklager sowie der Wiederherstellung seiner ordnungsgemäßen Betriebsstellung auf dem Schwenklager und dem Tellerhubventil.Furthermore, the longitudinal webs should have a variable in the longitudinal direction of the lever body clearance, which is smaller than the shaft diameter of the Tellerhubventils in the region of the inner longitudinal end face of the crossbar. Such shaped longitudinal webs serve not only the lateral guidance of the lever body on the shaft of the Tellerhubventils, but also as a longitudinal stop, which can prevent a leaking of the drag lever of its pivot bearing in the direction of the Tellerhubventils under extreme operating conditions of the internal combustion engine. Such a jumping off of the finger lever, the can lead to considerable damage to the complete destruction of the internal combustion engine, occurs mainly with the use of pivot bearings with hydraulic valve clearance compensation and insufficient pressure medium supply, such as high oil foaming or insufficient supply pressure, and / or inadmissible high speeds of the engine. In the case of a then already initiated Abspringvorgangs the rocker arm then longitudinally abutting the shank of the Tellerhubventils longitudinal webs serve at least the risk minimization of a complete jump of the rocker arm from the pivot bearing and the restoration of its proper operating position on the pivot bearing and the Tellerhubventil.
Schließlich ist es vorgesehen, dass die Blechhöhe der Längsstege kleiner als die Blechhöhe des Querbalkens ist. Ein solches Materialstärkenverhältnis kann insbesondere im Hinblick auf eine Reduzierung der beim Stanzen der Öffnung sowohl am Werkzeug als auch am Werkstück auftretenden Scherkräfte vorteilhaft sein, da sich die Längsstege in diesem Stadium des Blechumformprozesses noch ungebogen in die Öffnung erstrecken und ein entsprechend profiliertes und mithin hochbeanspruchtes Stanzwerkzeug erforderlich ist. Die lokale Reduzierung der Blechhöhe im Bereich der später entstehenden Öffnung erfolgt dann in einem dem Stanzen vorgelagerten Umformschritt, bei dem das im Bereich der Öffnung zu diesem Zeitpunkt noch vorhandene Blechmaterial vorzugsweise durch Prägen in seiner Materialstärke reduziert wird.Finally, it is provided that the sheet height of the longitudinal webs is smaller than the sheet height of the crossbar. Such a material thickness ratio may be advantageous in particular with regard to a reduction of the shear forces occurring during the punching of the opening both on the tool and on the workpiece, since the longitudinal webs at this stage of the sheet metal forming process still extend unbent into the opening and a correspondingly profiled and thus highly stressed punching tool is required. The local reduction of the sheet height in the region of the later resulting opening then takes place in a punching preceded forming step, in which the sheet metal material still present in the region of the opening at this time is preferably reduced in its material thickness by embossing.
Weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den Zeichnungen, in denen ein Ausführungsbeispiel der Erfindung dargestellt ist. Es zeigen:
Figur 1- einen erfindungsgemäßen Schlepphebel in perspektivischer Untersicht;
Figur 2- den Schlepphebel gemäß
im Längsschnitt in Einbausituation;Figur 1 Figur 3- den Schlepphebel gemäß
in der Untersicht;Figur 1 Figur 4- den Schlepphebel gemäß
in der Draufsicht;Figur 1 Figur 5- den Hebelkörper des Schlepphebels gemäß
nach Ausstanzen der Öffnung in der Draufsicht undFigur 1 Figur 6- den Hebelkörper gemäß
im Längsschnitt.Figur 5
- FIG. 1
- a drag lever according to the invention in a perspective bottom view;
- FIG. 2
- according to the rocker arm
FIG. 1 in longitudinal section in installation situation; - FIG. 3
- according to the rocker arm
FIG. 1 in the lower view; - FIG. 4
- according to the rocker arm
FIG. 1 in the plan view; - FIG. 5
- the lever body of the finger lever according to
FIG. 1 after punching the opening in the plan view and - FIG. 6
- according to the lever body
FIG. 5 in longitudinal section.
In
Wie es auch in den nachfolgend erläuterten
Wie in
In der in
In den
Zur Erhöhung der Standzeiten des E-förmig profilierten Stanzwerkzeugs ist es gemäß
- 11
- Schlepphebelcam follower
- 22
- Hebelkörperlever body
- 33
- ventilseitiger Endabschnittvalve side end portion
- 44
- gelenkseitiger Endabschnittarticulated end section
- 55
- Gelenkpfannesocket
- 66
- Halteklammerretaining clip
- 77
- SeitenwandSide wall
- 88th
- Mittelabschnitt des HebelkörpersMiddle section of the lever body
- 99
- Bolzenaugepin boss
- 1010
- Rollerole
- 1111
- Bolzenbolt
- 1212
- Querbalkencrossbeam
- 1313
- Tellerhubventilreciprocating poppet
- 1414
- Unterseite des QuerbalkensBottom of the transom
- 1515
- VentilbetätigungsflächeValve actuating surface
- 1616
- Längssteglongitudinal web
- 1717
- Schwenklagerpivot bearing
- 1818
- Nockencam
- 1919
- innere Längsstirnseite des Querbalkensinner longitudinal front side of the crossbeam
- 2020
- Öffnungopening
- 2121
- Wälzkörperrolling elements
- 2222
- Abstand der LängsstegeDistance between the longitudinal webs
- 2323
- SchaftdurchmesserShaft diameter
- 2424
- Kontaktpunkt für SchweißwerkzeugContact point for welding tool
- 2525
- Endabschnitt des LängsstegsEnd section of the longitudinal web
- 2626
- Blechhöhe des LängsstegsSheet height of the longitudinal web
- 2727
- Blechhöhe des QuerbalkensSheet height of the crossbeam
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08150587T PL1956198T3 (en) | 2007-02-10 | 2008-01-24 | Rocker arm with a lever body formed from folded metal sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007006695A DE102007006695A1 (en) | 2007-02-10 | 2007-02-10 | Drag lever with a molded from sheet metal lever body |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1956198A1 true EP1956198A1 (en) | 2008-08-13 |
EP1956198B1 EP1956198B1 (en) | 2010-05-12 |
Family
ID=39272319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08150587A Expired - Fee Related EP1956198B1 (en) | 2007-02-10 | 2008-01-24 | Rocker arm with a lever body formed from folded metal sheet |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1956198B1 (en) |
DE (2) | DE102007006695A1 (en) |
PL (1) | PL1956198T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103953409A (en) * | 2014-04-08 | 2014-07-30 | 杭州新坐标科技股份有限公司 | Ball head lock sheet for connecting idler wheel rocker and hydraulic tappet |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008046186A1 (en) * | 2008-09-06 | 2010-03-11 | Schaeffler Kg | Cam follower for valve train for controlling gas cycle of internal combustion engine, has bowl-shaped calotte receptacle at end, where side walls are provided with longitudinally extending chamfers in area of calotte receptacle |
DE102011007451A1 (en) | 2011-04-15 | 2012-10-18 | Schaeffler Technologies AG & Co. KG | Cam follower of a valve train |
DE102011076727A1 (en) | 2011-05-30 | 2012-12-06 | Schaeffler Technologies AG & Co. KG | Rocker arm i.e. roller rocker arm, for variable valve train of combustion piston engine, has bars designed in stepped manner at inner walls, where distance between walls in inner region is less than that between walls in outer region |
DE102016223822A1 (en) | 2016-11-30 | 2018-05-30 | Schaeffler Technologies AG & Co. KG | Drag lever for a valve train of an internal combustion engine |
DE102022112027A1 (en) | 2022-05-13 | 2023-11-16 | Schaeffler Technologies AG & Co. KG | Cam follower made of sheet steel for a valve train of an internal combustion engine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19543657A1 (en) | 1995-11-23 | 1997-05-28 | Schaeffler Waelzlager Kg | Trailing or tilting lever e.g. for internal combustion engine valve gear |
DE19617668A1 (en) * | 1995-11-23 | 1997-11-06 | Schaeffler Waelzlager Kg | Tilting lever formed as non-chipping sheet-metal |
DE19652676A1 (en) * | 1996-12-18 | 1998-06-25 | Schaeffler Waelzlager Ohg | Actuating lever for a valve train of an internal combustion engine |
DE19717991A1 (en) | 1997-04-28 | 1998-10-29 | Schaeffler Waelzlager Ohg | Rocker arm for internal combustion engine |
DE19750206A1 (en) * | 1997-11-13 | 1999-05-20 | Schaeffler Waelzlager Ohg | Tappet molded without machining |
DE19811658A1 (en) | 1998-03-18 | 1999-09-23 | Schaeffler Waelzlager Ohg | Pivotable cam follower for valve gear of internal combustion engine |
US6062184A (en) * | 1995-11-23 | 2000-05-16 | Ina Walzlager Schaeffler Ohg | Rocker arm or finger lever formed by a chipless process |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19743479A1 (en) * | 1997-10-01 | 1999-04-08 | Schaeffler Waelzlager Ohg | Cam tracer for the operation of the valves in an internal combustion motor |
DE19743488A1 (en) * | 1997-10-01 | 1999-04-08 | Bayerische Motoren Werke Ag | Cylinder head with valve control for an internal combustion engine |
DE10030341C2 (en) * | 2000-06-20 | 2003-04-10 | Ina Schaeffler Kg | Process for producing a lever-like cam follower |
-
2007
- 2007-02-10 DE DE102007006695A patent/DE102007006695A1/en not_active Withdrawn
-
2008
- 2008-01-24 DE DE502008000625T patent/DE502008000625D1/en active Active
- 2008-01-24 EP EP08150587A patent/EP1956198B1/en not_active Expired - Fee Related
- 2008-01-24 PL PL08150587T patent/PL1956198T3/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19543657A1 (en) | 1995-11-23 | 1997-05-28 | Schaeffler Waelzlager Kg | Trailing or tilting lever e.g. for internal combustion engine valve gear |
DE19617668A1 (en) * | 1995-11-23 | 1997-11-06 | Schaeffler Waelzlager Kg | Tilting lever formed as non-chipping sheet-metal |
US6062184A (en) * | 1995-11-23 | 2000-05-16 | Ina Walzlager Schaeffler Ohg | Rocker arm or finger lever formed by a chipless process |
DE19652676A1 (en) * | 1996-12-18 | 1998-06-25 | Schaeffler Waelzlager Ohg | Actuating lever for a valve train of an internal combustion engine |
DE19717991A1 (en) | 1997-04-28 | 1998-10-29 | Schaeffler Waelzlager Ohg | Rocker arm for internal combustion engine |
DE19750206A1 (en) * | 1997-11-13 | 1999-05-20 | Schaeffler Waelzlager Ohg | Tappet molded without machining |
DE19811658A1 (en) | 1998-03-18 | 1999-09-23 | Schaeffler Waelzlager Ohg | Pivotable cam follower for valve gear of internal combustion engine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103953409A (en) * | 2014-04-08 | 2014-07-30 | 杭州新坐标科技股份有限公司 | Ball head lock sheet for connecting idler wheel rocker and hydraulic tappet |
Also Published As
Publication number | Publication date |
---|---|
DE502008000625D1 (en) | 2010-06-24 |
PL1956198T3 (en) | 2010-10-29 |
DE102007006695A1 (en) | 2008-08-21 |
EP1956198B1 (en) | 2010-05-12 |
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