• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Proposed is an intermediate lever (1) for a variable valve train of an internal combustion engine, with two side walls (2) which are bridged in a central portion of an axis (3) on which one of the side walls (2) enclosed counter-roller (4) for a Hub cam is arranged, wherein at one end face (5) has a surface (6) for variable transmission of a stroke of the lifting cam on a tap of a follower member, wherein at a further front end (7), the side walls (2) from a further axis (8) are spanned, on which a roller package (9) is applied for a slide track and cam contact and wherein the side walls (2) of a cross bar (10) are bridged, which is present as a separate component.
    公开号:AT511682A2
    申请号:T599/2012
    申请日:2012-05-22
    公开日:2013-01-15
    发明作者:
    申请人:Schaeffler Technologies Ag；
    IPC主号:
    专利说明:

    description
    intermediate lever
    The invention relates to an intermediate lever for a variable valve train of an internal combustion engine, having two side walls which are bridged in a central portion of an axis on which an enclosed by the side walls counter roller for a lifting cam is arranged, wherein at one end face a surface for the variable transmission of Hubes the lift cam sits on a tap of a follower member, wherein at a further end face, the side walls are spanned by a further axis on which a roller package is applied for a slide track and cam contact and wherein the side walls are bridged by a cross bar.
    An example of such intermediate lever, consisting here of sheet steel, is removed from Fig. 3 of the drawing and was installed at the time of filing of the present invention by the Bavarian Engine Works in their fully variable valve trains with the internal name "Valvetronic Generation 3".
    The fixedly connected to the side walls at the other end crossbar in the aforementioned intermediate lever serves to stabilize the intermediate lever. In addition, it ensures that during assembly of the axles with counter-rotating roller and roller package, the side walls are held in a predetermined position and that the latter remains dimensionally stable in a heat treatment and possibly machining the intermediate lever.
    A disadvantage is considered that the cross bar limits the freedom of movement of the intermediate lever and thus the freedom in designing the fully variable valve train is limited. The crossbar also makes the intermediate lever still too complicated. • 9 ft ··· < »· · · · F« · · · · «· · · · · * · · · · · ·» 1 2 * * «« · «·
    It is an object of the invention to create an intermediate lever without the aforementioned disadvantages. In particular, the intermediate lever should have an improved freedom of movement with a simple construction and be ready or mountable without any adverse effects.
    According to the invention this object is achieved in that the crossbar is present as a separate component.
    Thus, the aforementioned disadvantages have been resolved. The intermediate lever has an improved clearance, especially in backdrop and cam direction, and can be done by the elimination of hitherto integrally connected crossbar punch punching-bending technology, but also its urformtechnische representation is provided.
    The connection of the cross bar as a separate component also allows its arrangement at hitherto difficult or impossible to represent positions such as between the mating roller and the roller package, in the region of an upper side of the intermediate lever. Preferably, the cross bar is positioned in a clearly spaced from the one end face portion of the intermediate lever.
    The cross bar can be firmly connected to the side walls according to an advantageous embodiment of the invention. Here, for example, on welding, soldering, clamps, snapping, clipping, caulking, gluing or screws thought.
    Alternatively provided is also a built variant in which the crossbar is detachably connected to the side walls. At least in this embodiment, it is proposed to connect the cross bar immediately after a punch-bending technical representation of the intermediate lever with the side walls and to undergo heat treatment together with the intermediate lever, which then takes place a machining and assembly of the axles with role / role package. Since the lever is now given sufficient stability through the axles, it is intended that the •
    Remove the crossbar before installing the intermediate lever in the valve train again. Alternatively, however, this releasable cross bar can also remain on the intermediate lever.
    In development of the invention, it is provided to the above-mentioned releasable variant to provide the cross bar end with claw-like inwardly curved lugs, which engage in respective recesses of the side walls for fastening purpose ungszweck / snap. Further stabilization / loss prevention can be experienced by the composite in that, for example, the cross bar has groove-shaped recesses on its underside, which are inserted over upper sides of the side walls or vice versa.
    Although it is particularly advantageous to deep draw the intermediate lever made of thin-walled steel sheet or to punch / bend. However, it can also be produced by casting or extrusion technology or essentially by machining. On cross bars, which would give the intermediate lever a cross-sectionally U-shaped profile, is advantageously dispensed with, which, for example, is advantageous in terms of lightweight construction.
    An alternative design variant for the crossbar is to make this, as proposed according to claim, as a rung or pipe section and run in respective recordings of the side walls. Here also the aforementioned fastening measures come into question.
    With minor modifications, the intermediate lever with its essential design features can also be used as a cam follower in a "classic" valve train.
    The invention will be explained with reference to the drawing. Show it:
    1 shows a first variant of the intermediate lever with removable cross bar. · »*« · Μ · · * < 2 shows a second variant of the intermediate lever with a fixed crossbar fixedly connected to the side walls and FIG. 3 an intermediate lever according to the prior art (see introduction of the description).
    Figure 1 discloses an intermediate lever 1 for a variable valve train of an internal combustion engine. This has two upright side walls 2, which are bridged in a central portion of an axis 3. On the axis 3, a counter-rotating roller 4 is arranged for a lifting cam.
    At a first end face 5 extends a surface 6 for the variable transmission of a stroke of the lifting cam on a tap of a follower member present as Schlepphebef. At a further front end 7, the side walls 2 are spanned by a further axis 8, on which a roller package 9 is applied for a slide track and cam contact.
    It can be seen in Figure 1, that the side walls 2 of the intermediate lever 1 are bridged at its top 12 by a separate, here removable crossbar 10. In the region of Endstirnen 14 of the cross bar 10 has claw-like inwardly directed lugs 15. These engage in respectively grooves 16 of outer sides 17 of the side walls 2, which grooves 16 also be continuous can.
    The aforementioned cross bar 2 has on its underside two groove-shaped recesses 18, via which it is inserted over upper sides 12 of the side walls 2 of the intermediate lever 1.
    The cross bow 10 of FIG. 2 is fixed, so not removable, with inner sides 13 of the side walls 2 near the tops 12 connected. It also runs in a longitudinal section between the mating roller 4 and the roller package 9. 5 '
    Fig. 3 discloses an intermediate lever 19 according to the prior art, as it is currently installed by the Bavarian engine works in their fully variable valve trains with the internal name "Valvetronic Generation 3". 5 whose side walls 21 are bridged in the region of the roll package of a one-piece tethered crosspiece 20, which, as can be seen easily, the free movement of the intermediate lever 19 limits. > * * * ψ »* * * • · * * * * * * •« «k · lf * · ·
    List of Reference Numbers 1) Intermediate lever 2) Side wall 3) Axis 4) Counter roller 5) One end 6) Face 7) Further end 8) Axis 9) Roller package 10) Cross bar 11) Recess 12) Top 13) Inside 14) End face 15) Nose 16) Groove 17) Outside 18) Recess 19) Intermediate lever (St. d. (St. d. Technik) 21) Sidewall (St. d.
    权利要求:
    Claims (10)
    [1]
    • * • *

    1. Intermediate lever (1) for a variable valve train of an internal combustion engine, with two side walls (2) which are bridged in a middle section of an axis (3) on which one of the side walls (2) enclosed counter-roller (4) is arranged for a lifting cam, wherein at one end face (5) has a surface (6) for variably transmitting a stroke of the lifting cam on a tap of a follower member, wherein at a further front end (7), the side walls (2) are spanned by a further axis (8) on which a roller package (9) is applied for a slide track and cam contact and wherein the side walls (2) of a cross bar (10) are bridged, characterized in that the cross bar (10) exists as a separate component.
    [2]
    Second intermediate lever according to claim 1, characterized in that the transverse bow (10) engages over a recess (11) of the intermediate lever (1) between the counter-rotating roller (4) and the roller package (9).
    [3]
    3. intermediate lever according to claim 1 or 2, characterized in that the cross bar (10) in the region or near an upper side (12) between inner sides (13) of the side walls (2) sits, which upper side (12) faces a start of the lifting cam ,
    [4]
    4. intermediate lever according to claim 1, characterized in that the cross bar (10) is removable.
    [5]
    5. intermediate lever according to claim 1 or 4, characterized in that the cross bar (10) spans the upper sides (12) of the side walls (2) and in the region of the Endstirnen (14) like a claw or 10 15 20 25 Vienna, ft ftft * # * · «* * * • • * * ftft ··· · · *» «V 4« »·» n «4« ·· · q has outward-facing lugs (15) in respective grooves (16) of outer or inner sides (17, 13) of the side walls (2) engage.
    [6]
    6. intermediate lever according to claim 5, characterized in that either the transverse bracket (2) two groove-shaped recesses (18) are immanent over which it is placed over tops (12) of the side walls (2) of the intermediate lever (1) or that the tops (12) have two groove-shaped recesses in which the cross bar (10) sits.
    [7]
    7. Intermediate lever according to claim 1, characterized in that the transverse bar (10) is connected to the side walls (2) by a method such as welding, soldering, clamping, snapping, clipping, caulking, gluing or screwing.
    [8]
    8. intermediate lever according to claim 1, characterized in that the intermediate lever (1) consists of thin-walled sheet steel and is present without crossbeam except for the crossbar (10).
    [9]
    9. intermediate lever according to claim 1, characterized in that the cross bar (10) is shown as a rung and ends in bores of the side walls (2) sits.
    [10]
    10. A method for producing an intermediate lever according to claim 4, characterized in that the cross bar (10) is mounted according to a punch-bending technical representation of the intermediate lever (1), then followed by a heat treatment and spandende processing of the assembly (1, 10), to which an assembly of the axles (3, 8) with counter-rotating roller (4) and roller package (9) is connected and wherein the cross bar (10) is subsequently dismantled again. on 2 2nd · Schaeffler Technologies AG & Co. KG by: Häupl & Ellmeyer KG
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    同族专利:
    公开号 | 公开日
    AT511682A3|2014-01-15|
    DE102011077527A1|2012-12-20|
    GB2491939A|2012-12-19|
    GB201208815D0|2012-07-04|
    AT511682B1|2014-04-15|
    CN102828793A|2012-12-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5207191A|1992-08-31|1993-05-04|Henley Manufacturing Holding Company, Inc.|Boat-type rocker arm with stiffening member|
    US6293168B1|1999-10-06|2001-09-25|The Torrington Company|Stamped rocker arms for machines such as internal combustion engines|
    DE10017441A1|2000-04-07|2001-10-11|Bayerische Motoren Werke Ag|Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine|
    DE10235402A1|2002-08-02|2004-02-12|Bayerische Motoren Werke Ag|Swivel lever for a variable stroke valve train|
    EP1496211A1|2003-07-08|2005-01-12|Bayerische Motoren Werke Aktiengesellschaft|Rocker arm for a variable lift valve drive|
    DE10260557A1|2002-12-21|2004-07-01|Ina-Schaeffler Kg|Intermediate lever for a variable valve train of an internal combustion engine|
    DE102006018510A1|2006-04-21|2007-10-25|Schaeffler Kg|Swinging arm for stroke-variable valve gear of internal combustion engine, has stroke area, where maximum width of stroke area is formed larger or equal to maximum width of idle-stroke area and larger than minimum width of idle-stroke area|
    DE102006018512A1|2006-04-21|2007-10-25|Schaeffler Kg|Roller element for a pivotable machine part|
    DE102010009399A1|2010-02-26|2011-09-01|Schaeffler Technologies Gmbh & Co. Kg|Operating lever for stroke-variable gas exchange valve gear of internal-combustion engine, has lever housing, which is formed with two side panels and base, which is connected with side panels|DE102018132562A1|2018-12-18|2020-06-18|Schaeffler Technologies AG & Co. KG|Intermediate lever of a variable valve train|
    DE102018132561A1|2018-12-18|2020-06-18|Schaeffler Technologies AG & Co. KG|Intermediate lever of a variable valve train|
    法律状态:
    2015-07-15| PC| Change of the owner|Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Effective date: 20150526 |
    2020-01-15| MM01| Lapse because of not paying annual fees|Effective date: 20190522 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102011077527A|DE102011077527A1|2011-06-15|2011-06-15|intermediate lever|
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