EP1036256B1 - Ventilbetätigungshebel - Google Patents
Ventilbetätigungshebel Download PDFInfo
- Publication number
- EP1036256B1 EP1036256B1 EP98965707A EP98965707A EP1036256B1 EP 1036256 B1 EP1036256 B1 EP 1036256B1 EP 98965707 A EP98965707 A EP 98965707A EP 98965707 A EP98965707 A EP 98965707A EP 1036256 B1 EP1036256 B1 EP 1036256B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tabs
- symmetry plane
- longitudinal symmetry
- actuating lever
- valve actuating
- 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
Links
- 238000005452 bending Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 description 16
- 238000004080 punching Methods 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Images
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
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49295—Push rod or rocker arm 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
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20882—Rocker arms
Definitions
- the present invention relates to a valve operating lever for transmitting the Movement of a cam arranged on a camshaft onto a gas exchange valve an internal combustion engine.
- a roller rocker arm of the type in question is by DE 195 43 657 A1 became known.
- the known valve actuation lever has a U-shaped base body on, at one end a pan-like depression is provided with which the lever supports in the installed state via a support element on the cylinder head. At the other end there is the valve contact area through which the gas exchange valve the internal combustion engine depending on the position of the cam of the camshaft is operated.
- the cam is in a cam contact area with the valve actuation lever Contact, one in this cam contact area with a roller rocker arm roller is rotatably mounted by rolling elements.
- the base body of the valve actuation lever is formed without cutting and points to the End at which the valve contact area is provided, inwardly bent tabs which form lateral boundary surfaces.
- the present invention is therefore based on the object of a valve actuation lever and in particular a roller rocker arm and a method for the same To provide production at which the moment of inertia the lever around the axis of rotation is reduced. Another aspect of this task is it to design the valve actuation lever so that the rigidity against the State of the art increased and low manufacturing costs can be achieved.
- the valve actuation lever according to the invention has a substantially non-cutting shaped elongated body, preferably with a U-shaped profile.
- the basic body is essentially symmetrical to itself in its longitudinal direction extending longitudinal plane of symmetry.
- tabs are arranged in the valve contact area, each one have the side surface facing the longitudinal plane of symmetry.
- the tabs are on molded onto an end edge of this base body and towards the valve contact area bent.
- At least one of these tabs points away from this plane of longitudinal symmetry away extending transition area, in which the distance between them Side surfaces enlarged and at least one parallel area in which this Side surfaces run essentially parallel to this longitudinal plane of symmetry.
- the two tabs are at a clear distance at the end edge of the body arranged, which is less than the clear distance of the side surfaces in the parallel area, this distance in each case in a direction perpendicular to the longitudinal plane of symmetry is determined.
- the design according to the invention has a number of essential advantages.
- the distance between the tabs on the end edge of the elongated body is constructive Size, which is the width of the elongated body in the valve contact area certainly. By reducing this distance, the width of the elongated one becomes simultaneously Base body at least in the valve contact area and thereby also its Weight decreased. Because the valve contact area is radial from the axis of rotation of the valve operating lever is spaced, this results in a significant reduction the moment of inertia around the axis of rotation of the lever. With that, the forces required to operate the lever are reduced at the same speed, and it becomes the permissible for the valve train with regard to the actuation forces Speed limit raised.
- the bending lengths of the lever are also transverse to its longitudinal direction reduced, which can increase the rigidity.
- the tabs are on the base body the bending process molded in such a way that they are parallel to the plane of longitudinal symmetry extend, d. H. run straight. The bending then takes place in such a way that one or both tabs to form the transition area from the longitudinal plane of symmetry be bent away. At the end of the transition area are the tabs then bent in such a way that the inner plane facing the plane of symmetry Side surface of the tab runs parallel to this.
- this parallel area can then be used connect yet another constriction area in which one or both tabs are facing the longitudinal plane of symmetry again.
- the tabs are such punched that the transition area and the parallel area already with the deformed tabs are present.
- the tabs then only have to be bent through 180 ° and then in the bent state, without further bending, the desired contour in the valve contact area.
- the first and the second embodiment can also be combined with one another.
- the flaps are stamped into an initial shape followed by a 180 ° bend and an additional bend brought to the longitudinal symmetry plane or away from it into the final shape.
- Tabs it is also possible to treat the tabs differently, so that e.g. a Tab is only subjected to a bend of approximately 180 °, while the other tab both this bend and a further bend, in particular to the plane of longitudinal symmetry there or away from it.
- the initial form of Tabs be the same, e.g. the shape of an elongated cuboid parallel to the plane of longitudinal symmetry corresponding longitudinal edges or different from each other his.
- Fig. 1 shows a first embodiment of the roller finger follower according to the invention.
- the roller rocker arm has a base body designated 1 overall, which extends essentially symmetrically along a longitudinal plane of symmetry 2.
- the term plane of symmetry is not to be understood here in a purely geometrical sense, it simply means that essential areas of the valve actuation lever are designed symmetrically to this plane of symmetry.
- the plane of symmetry 2 1 runs perpendicular to the plane of the drawing and forms in the 2 the sectional plane.
- the elongated body is, as can be seen from the illustration in FIG. 3, in designed essentially U-shaped and has a symmetrical to the plane of symmetry 2 extending recess 4 in which a roller 7 mounted on rolling elements 6th is arranged. When installed, the roller 7 stands with the cam of a camshaft in contact.
- this recess 10 for receiving a Support element (not shown) is provided. When installed this element in turn is supported within the cylinder head (not shown) from.
- This recess 10 is known in the prior art and therefore need not be discussed further here.
- valve contact area 20 On the left side of the base body in the illustration according to FIG. 1 there is a valve contact area 20 provided.
- the valve contact area has a surface 21, which is designed to be slightly convex in the exemplary embodiment, but can also do other things Have curvature shapes or just be designed.
- the valve contact area is through two, the longitudinal symmetry plane 2 facing limited lateral surfaces 23, 24, which are part of the tabs 25, 26.
- the tabs 25, 26 are formed on an end edge 30 of the elongate base body 1, the end edge 30 being substantially perpendicular to the plane of symmetry 2.
- the distance between the tabs 25 and 26 corresponds to this end edge of the base body the length a in Fig. 5 between the arrows 31 and 32 or, in other words, the Tabs 25 and 26 are on the end edge 30 of a web 30a, which has the width c (see Fig. 5) between the arrows 33 and 34, integrally formed.
- both tabs 25, 26 have a transition region 35, 36 on, in which the tabs away from the plane of symmetry 2 extend.
- a parallel area 37 adjoins this transition area 35, 36 38 in which both tabs run parallel to the plane of symmetry 2.
- At the tab 26 is followed by a constriction area 40, in which the tab rests on the Plane of symmetry 2 runs.
- transition area is therefore defined by the fact that here the angular Alignment of the tab or the side surfaces with respect to the longitudinal plane of symmetry changes.
- the distance between the two tabs corresponds to the distance b, as shown between arrows 42, 43.
- This distance b is larger than the distance a.
- the difference between the two routes essentially corresponds to the width savings of the base body compared to the prior art discussed above.
- the two tabs 25, 26 are located, in particular the representation according to Figure 2 shows, flush, d. H. without space on which curved surface of the valve contact area 20.
- the tabs can also in this embodiment be designed in the next embodiment so that between the tabs and a gap is provided on the surface of the valve contact area, the tabs are then shaped so that their end area rests on the valve contact area.
- the end region in the illustration according to FIG. B. at the tab 26 of the Constriction area 40, with respect to the valve contact area, can be fixed in the first alternative, d. H. with flush-fitting tabs, as well as with the second alternative, d. H. in the case of tabs that are partially at a distance from the valve contact area have at the end of an additional connection, preferably by a spot weld is made.
- the roller rocker arm shown in the embodiment is a total of one Metal sheet punched out and then preferably cold-formed to the in Fig. 1 to 4 to achieve the final design shown.
- the tabs 25 and 26 are at Punching as an essentially straight extension of the base body 1 educated. Then, as shown in Fig. 6, they are down (in the illustration seen the drawing) reshaped, the distance between the tabs continues corresponds to the distance a. Then the tabs from the plane of symmetry 2 bent away to form the transition region 35, 36.
- This bending process is carried out so that the tabs are initially at a first bending angle are bent outwards so that the outwards from the plane of symmetry 2nd forms the first part of the transition region 35, 36 and that adjoins it the tabs bent back in the direction of the plane of symmetry 2 be that the further part of the tabs runs parallel to the line of symmetry 2. Only one or both ends of the tabs, as indicated by 40 in Fig. 1, is again with an inward bending angle, formed on the plane of symmetry 2.
- this design makes it possible run the valve operating lever with a small width. This becomes significant of material saved, thereby reducing the moment of inertia around the axis of rotation reduced and, with otherwise the same dimensions, the rigidity is increased.
- this essentially corresponds to that shown in FIG. 8 End product, namely the roller finger follower, essentially as shown Fig. 1. Corresponding reference numerals are therefore also used there.
- the tabs are here during a punching process immediately formed so that the desired transition area is already during the punching process and not, as in the exemplary embodiment according to FIGS. 1 to 6, results in bending.
- the tab 51 is on the substantially perpendicular to the plane of symmetry 2 End edge 30 of the base body 1 is formed.
- the tab 51 has a first Area in which the tab is designated 53 even in the undeformed state forms an acute angle to this end edge 30, whereby one of the longitudinal symmetry plane 2 pointing transition area 54 forms.
- the transition area 54 is followed by a parallel region 55, which is designed parallel to the plane of longitudinal symmetry and there is an area 56 in which the side surface is at an acute angle to the longitudinal plane of symmetry is directed towards.
- a parallel region 57 is initially provided, which is parallel to the Longitudinal plane of symmetry 2 runs, to which the transition region 58 then adjoins, in which the tab extends outward from the longitudinal plane of symmetry 2.
- a further parallel area 59 which is parallel to the longitudinal plane of symmetry 2 extends and which forms the side surface 60.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
- Figur 1
- eine Untersicht eines ersten Ausführungsbeispiels der Erfindung, welches als Rollenschlepphebel ausgebildet ist;
- Figur 2
- einen Längsschnitt des Ausführungsbeispiels gemäß Fig. 1;
- Figur 3
- einen Schnitt durch die Darstellung gemäß Fig. 2 entlang der Linien III-III gesehen;
- Figur 4
- eine Aufsicht auf das Ausführungsbeispiel gemäß Fig. 1;
- Figur 5
- eine Ansicht des Rollenschlepphebels des Ausführungsbeispiels gemäß Fig. 1 während der Fertigung, von unten gesehen;
- Figur 6
- eine Darstellung entsprechend der Fig. 5 in einem weiteren Stadium der Fertigung;
- Figur 7
- ein zweites Ausführungsbeispiel des erfindungsgemäßen Rollenschlepphebels in einem vorhergehenden Stadium der Fertigung, von unten gesehen;
- Figur 8
- den Rollenschlepphebel gemäß Fig. 7 in einer Ansicht von unten gesehen;
- 1
- Grundkörper
- 2
- Längssymmetrieebene
- 4
- Aussparung
- 6
- Wälzelement
- 7
- Rolle
- 10
- Vertiefung
- 20
- Ventil-Kontaktbereich
- 21
- Fläche von 20
- 23, 24
- Seitliche Fläche
- 25, 26
- Lasche
- 30
- Endkante
- 30a
- Steg
- 31, 32
- Pfeil
- 33, 34
- Pfeil
- 35, 36
- Übergangsbereich
- 37, 38
- Parallelbereich
- 40
- Verengungsbereich
- 42, 43
- Pfeil
- 51, 52
- Lasche
- 53
- spitzer Winkel
- 54
- Übergangsbereich
- 55
- Parallelbereich
- 56
- Verengungsbereich
- 58
- Übergangsbereich
- 59
- Parallelbereich
- 60
- seitliche Fläche
- a
- Abstand senkrecht zur Längssymmetrieebene
- b
- Abstand senkrecht zur Längssymmetrieebene
- c
- Breite zwischen den Pfeilen 33 und 34
Claims (15)
- Ventilbetätigungshebel zur Übertragung der Bewegung eines auf einer Nockenwelle angeordneten Nockens auf ein Gaswechsel-Ventil einer Brennkraftmaschine mit:einem im wesentlichen spanlos geformten länglichen Grundkörper (1), der im wesentlichen symmetrisch zu einer sich in seine Längsrichtung erstreckenden Längssymmetrieebene (2) gestaltet ist,einem an einem ersten Ende dieses Grundkörpers angeordneten Ventil-Kontaktbereich (20),zwei zu beiden Seiten dieser Längssymmetrieebene im Ventil-Kontaktbereich angeordneten Laschen (25, 26; 51, 52), welche jeweils eine der Längssymmetrieebene zugewandte Seitenfläche (23, 24; 60, 61) aufweisen, wobei diese Laschen an diesem Grundkörper angeformt und zu diesem Ventil-Kontaktbereich hin umgebogen sind,
daß zumindest eine dieser Laschen wenigstens einen sich von dieser Längssymmetrieebene weg erstreckenden Übergangsbereich (35, 36; 54, 58) aufweist, in welchem sich der Abstand zwischen diesen Seitenflächen vergrößert sowie wenigstens einen Parallelbereich (37, 38; 55, 59) , in dem diese Seitenflächen im wesentlichen parallel zu dieser Längssymmetrieebene (2) verlaufen. - Ventilbetätigungshebel gemäß Anspruch 1, dadurch gekennzeichnet, daß dieser Übergangsbereich (35, 36) durch eine plastische Verformung geschaffen ist.
- Ventilbetätigungshebel gemäß Anspruch 1, dadurch gekennzeichnet, daß dieser Übergangsbereich (54, 58) durch einen materialtrennenden Vorgang geschaffen ist.
- Ventilbetätigungshebel gemäß mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zumindest eine dieser Laschen einen sich an diesen Parallelbereich anschließenden Verengungsbereich (40, 56) aufweist, in welchem die Lasche auf die Längssymmetrieebene (2) hin zulaufend ausgebildet ist.
- Ventilbetätigungshebel gemäß mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet daß dieser Grundkörper in einer Schnittebene, die senkrecht zur Längssymmetrieebene liegt, im wesentlichen U-förmig gestaltet ist.
- Ventilbetätigungshebel gemäß mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß diese Laschen im Querschnitt rechtwinklig und vorzugsweise quadratisch ausgebildet sind.
- Ventilbetätigungshebel gemäß mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die den Ventilkontaktbereich (20) bildende Fläche (21) gekrümmt verläuft und daß die Laschen derartig gebogen sind, daß sie der Krümmung folgend auf dieser Fläche aufliegen.
- Ventilbetätigungshebel gemäß mindestens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die den Ventil-Kontaktbereich (20) bildende Fläche (21) gekrümmt verläuft und daß die Laschen derartig gebogen sind, daß sie in einem Teilbereich einen Abstand zu dieser Fläche aufweisen und nur an ihrem Endbereich auf dieser Fläche aufliegen.
- Ventilbetätigungshebel gemäß Anspruch 7 oder 8, dadurch gekennzeichnet, daß diese Krümmung zumindest teilweise eine konvexe Krümmung ist.
- Ventilbetätigungshebel gemäß mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß dieser Ventilhebel als Schlepphebel ausgebildet ist.
- Ventilbetätigungshebel gemäß Anspruch 10, dadurch gekennzeichnet, daß dieser Ventilbetätigungshebel als Rollenschlepphebel ausgebildet ist.
- Ventilbetätigungshebel gemäß Anspruch 11, dadurch gekennzeichnet, daß dieser Rollenschlepphebel eine über Wälzelemente (6) drehbar gelagerte Rolle (7) aufweist.
- Ventilbetätigungshebel gemäß Anspruch 1, dadurch gekennzeichnet, daß
dieser Grundkörper (1) im Querschnitt U-förmig ist und daß diese Laschen an einer Endkante (30) dieses Grundkörpers angeformt sind, und zwar an einem Steg (30a) geringer Breite (c) des U-förmigen Grundkörpers (1). - Verfahren zur Herstellung eines Ventilbetätigungshebels und insbesondere eines Ventilbetätigungshebels gemäß einem der Ansprüche 1 bis 13 mit folgenden Verfahrensschritten:Ausstanzen eines länglichen Grundkörpers (1), der im wesentlichen symmetrisch zu einer sich in seine Längsrichtung erstreckenden Längssymmetrieebene (2) gestaltet ist, mit zwei zu beiden Seiten dieser Längssymmetrieebene (2) an einer Endkante angeordneten Laschen (25, 26), welche jeweils eine der Längssymmetrieebene (2) zugewandte Seitenfläche (23, 24) aufweisen, wobei diese Laschen (25, 26) an diesem Grundkörper (1) angeformt sind, und parallel zu dieser Längssymmetrieebene (2) verlaufen,Biegen dieser Laschen (25, 26) um einen Winkel von ungefähr 180°,Biegen von zumindest eine dieser Laschen (25, 26) zur Bildung eines sich von dieser Längssymmetrieebene (2) weg erstreckenden Übergangsbereichs (35, 36), in welchem sich der Abstand zwischen diesen Seitenflächen (23, 24) vergößert, sowie wenigstens eines Parallelbereichs (37, 38), in dem diese Seitenflächen (23, 24) im wesentlichen parallel zu dieser Längssymmetrieebene (2) verlaufen
- Verfahren zur Herstellung eines Ventilbetätigungshebel und insbesondere eines Ventilbetätigungshebels gemäß einem der Ansprüche 3 bis 13 mit folgenden Verfahrensschritten:Ausstanzen eines länglichen Grundkörpers (1), der im wesentlichen symmetrisch zu einer sich in seine Längsrichtung erstreckenden Längssymmetrieebene (2) gestaltet ist, mit zwei zu beiden Seiten dieser Längssymmetrieebene (2) angeordneten Laschen (51, 52), welche jeweils eine der Längssymmetrieebene (2) zugewandte Seitenfläche (60, 61) aufweisen, wobei diese Laschen (51, 52) an diesem Grundkörper angeformt sind, und wobei zumindest eine dieser Laschen (51, 52) wenigstens einen sich von dieser Längssymmetrieebene (2) weg erstreckenden Übergangsbereich (54, 58) aufweist, in welchem sich der Abstand zwischen diesen Seitenflächen (60, 61) vergrößert sowie wenigstens einen Parallelbereich (55, 59), in dem diese Seitenflächen (60, 61) im wesentlichen parallel zu dieser Längssymmetrieebene (2) verlaufenBiegen dieser Laschen um einen Winkel von ungefähr 180°.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19753424 | 1997-12-02 | ||
DE19753424A DE19753424A1 (de) | 1997-12-02 | 1997-12-02 | Ventilbetätigungshebel |
PCT/EP1998/007674 WO1999028600A1 (de) | 1997-12-02 | 1998-11-27 | Ventilbetätigungshebel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1036256A1 EP1036256A1 (de) | 2000-09-20 |
EP1036256B1 true EP1036256B1 (de) | 2002-04-03 |
Family
ID=7850497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98965707A Expired - Lifetime EP1036256B1 (de) | 1997-12-02 | 1998-11-27 | Ventilbetätigungshebel |
Country Status (5)
Country | Link |
---|---|
US (1) | US6273044B1 (de) |
EP (1) | EP1036256B1 (de) |
DE (2) | DE19753424A1 (de) |
ES (1) | ES2174539T3 (de) |
WO (1) | WO1999028600A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6470842B2 (en) * | 2000-10-12 | 2002-10-29 | Ina Walzlager Schaeffler Ohg | Lever-type cam follower |
ES2228241B1 (es) * | 2003-02-20 | 2006-06-01 | Tratasa 2000, S.L. | Procedimiento para fabricar un filtro para agua y otros fluidos. |
US20100018276A1 (en) * | 2008-07-28 | 2010-01-28 | Edelmayer Thomas C | Sheet metal rocker arm with integrally formed cross member |
US20110253088A1 (en) * | 2010-04-15 | 2011-10-20 | Schaeffler Technologies Gmbh & Co. Kg | Structural unit for a gas exchange valve train of an internal combustion engine |
DE102011076727A1 (de) | 2011-05-30 | 2012-12-06 | Schaeffler Technologies AG & Co. KG | Schlepphebel eines Ventiltriebs |
JP6769691B2 (ja) * | 2014-12-26 | 2020-10-14 | 株式会社オティックス | ロッカーアームの製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5016582A (en) * | 1990-10-12 | 1991-05-21 | Henley Manufacturing Holding Company, Inc. | Rocker arm |
EP0573674B1 (de) | 1992-01-07 | 1997-04-02 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Kipphebel mit rolle und dessen herstellungsverfahren |
DE19543657C2 (de) | 1995-11-23 | 1998-07-02 | Schaeffler Waelzlager Ohg | Spanlos geformter Schlepp- oder Kipphebel |
DE19617668C2 (de) * | 1995-11-23 | 2003-11-20 | Ina Schaeffler Kg | Spanlos geformter Schlepp- oder Kipphebel |
DE19617523C2 (de) * | 1996-05-02 | 2001-11-08 | Schaeffler Waelzlager Ohg | Sicherung für Betätigungshebel von Ventilsteuerungen für Brennkraftmaschinen |
-
1997
- 1997-12-02 DE DE19753424A patent/DE19753424A1/de not_active Withdrawn
-
1998
- 1998-11-27 ES ES98965707T patent/ES2174539T3/es not_active Expired - Lifetime
- 1998-11-27 WO PCT/EP1998/007674 patent/WO1999028600A1/de active IP Right Grant
- 1998-11-27 US US09/555,550 patent/US6273044B1/en not_active Expired - Lifetime
- 1998-11-27 DE DE59803669T patent/DE59803669D1/de not_active Expired - Lifetime
- 1998-11-27 EP EP98965707A patent/EP1036256B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1036256A1 (de) | 2000-09-20 |
DE59803669D1 (de) | 2002-05-08 |
DE19753424A1 (de) | 1999-06-10 |
ES2174539T3 (es) | 2002-11-01 |
WO1999028600A1 (de) | 1999-06-10 |
US6273044B1 (en) | 2001-08-14 |
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