WO2014206403A1 - Culbuteur - Google Patents

Culbuteur Download PDF

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Publication number
WO2014206403A1
WO2014206403A1 PCT/DE2014/200169 DE2014200169W WO2014206403A1 WO 2014206403 A1 WO2014206403 A1 WO 2014206403A1 DE 2014200169 W DE2014200169 W DE 2014200169W WO 2014206403 A1 WO2014206403 A1 WO 2014206403A1
Authority
WO
WIPO (PCT)
Prior art keywords
rocker arm
side walls
longitudinal section
longitudinal
crossbar
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.)
Ceased
Application number
PCT/DE2014/200169
Other languages
German (de)
English (en)
Inventor
Andreas GRÖTSCH
Claudia Zielinski
Joachim Seitz
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co 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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2014206403A1 publication Critical patent/WO2014206403A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F01L2305/00—Valve arrangements comprising rollers
    • F01L2305/02—Mounting of rollers
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/107—Lubrication of valve gear or auxiliaries of rocker shaft bearings

Definitions

  • the invention relates to a rocker arm made of sheet steel, in particular for a valve train of an internal combustion engine, with two integrally connected by a crossbar side walls, each have a bearing eye for at least indirectly pivotable support on a tilting center in the region of its longitudinal center, on the one hand at a first end the rocker arm, sitting on a lower side of the crossbar, a contact area for a gas exchange valve and on the other hand, at a second end of the rocker arm, the side walls are bridged by a cam contact surface.
  • a generic rocker arm is disclosed in DE 10 2005 046 897 A1. This is seen in plan view double cranked and builds in particular in the region of its longitudinal center at the bearing eyes wide.
  • the rocker arm consists of two laterally offset longitudinal sections, the first longitudinal section starting from the first end and having the contact region, which second longitudinal section consists of a first subsegment in the bearing eyes and a second subsegment in the second end is formed with the cam abutment surface, wherein the longitudinal sections are connected by two co-cranked side wall portions, wherein the side walls in the second longitudinal portion have a continuous unausgebaucht- geradwandigen, orthogonal to the axis of rotation of the bearing eyes aligned course and wherein the side walls at its top by the crossbar are connected.
  • the toggle lever in addition to its particularly preferred application in a valve train of a low-volume internal combustion engine (moped, motorcycle, auxiliary or gardening machine engine, etc.), can also be used in a pump drive or compressor.
  • the rocker arm can also consist of another lightweight material such as plastic, fiber-reinforced or particle-reinforced, or a sheet-plastic composite.
  • the rocker arm preferably has in cross-section an inverted U-profile, which guarantees good rigidity, in particular by virtue of its at least largely closed transverse beams. However, it can also have an H-like design.
  • the lever is simply constructed by the only unique and rectified cranking of the rocker arm and, if necessary, also shorter than the lever according to the prior art can be displayed. Due to its narrow and straight presentation in the second longitudinal section, the lever is comparatively light and simple.
  • the scope of the invention relates to a solution in which in the bearing eyes a piece of pipe, for example, is attached. Via a welded or press connection, via which pipe section of the rocker arm is then pivotally movable on the axis. Alternatively, the rocker arm can sit over its bearing eyes directly on its tilting center. Under tilting center is also a bearing block to understand.
  • the pipe section and the overlying first sub-segment of the second longitudinal section are provided with at least one formed as a bore or window lubricant passage for oil mist or oil.
  • the window can be perforated or drilled.
  • lubricant can be pumped across the axle. Due to the claim for the most part closed and smooth-walled design of the overhead crossbeam, the rocker arm has a good rigidity and is particularly easy to manufacture. However, should it continue to be necessary to save mass, the crossbeam may also be provided with recesses, for example, in the region of its tilting ends.
  • cam contact surface on the second end of the rocker arm on a pin rotatably mounted roller is provided.
  • it is intended to be a sliding surface connected to the side walls, which optionally may be provided with a separate wear protection layer and possibly also formed as a separate part.
  • FIG. 3 shows a cross section through the rocker arm in the region of its bearing eyes.
  • rocker arm 1 made of sheet steel. This is intended for a valve train of a low-cost internal combustion engine.
  • the rocker arm 1 has two integrally connected by an overhead crossbar 2 side walls 3. These are provided in the region of their longitudinal center with a respective bearing eye 4. In the bearing eyes 4 sits firmly a pipe section 16 which projects beyond the side walls 3. About the pipe section 16 of the rocker arm 1 is verkippbeweglich on an axis, not shown storable.
  • the last-mentioned pipe section 16 and the overlying first sub-segment 12 of the second longitudinal section 1 1 are each provided with a window-like lubricant passage 17, 20.
  • lubricating oil can escape from oil mist or from a direct flow of oil (gating, channel) to the axle mounting.
  • the rocker arm 1 At a first end 5 of the rocker arm 1, on an underside 19 of the crossbar 2, sits a contact area 6 for a gas exchange valve.
  • This contact region 6 is present as a dome with a bore 18 with a thread.
  • a Nicoinstellschraube In the bore 18 a Popestellschraube is mounted.
  • the side walls 3 At a second end 7 of the rocker arm 1, the side walls 3 are bridged by a cam contact surface 8. This is available as a roller bearing roller, which runs on a bolt 15 which is fixed in the side walls 3.
  • the rocker arm 1 Seen in plan view (see Fig. 1), the rocker arm 1 consists of two mutually laterally offset longitudinal sections 10, 1 1st
  • the first longitudinal section 10 extends from the first end 5 and has and the contact region 6.
  • the second, connected thereto longitudinal section 1 1 is composed of a first subsegment 12 at the bearing eyes 4 and a second subsegment 13 at the second end 7 with the cam
  • the longitudinal sections 10, 11 are connected by two side wall regions 14 bent in the same direction.
  • the side walls 3 have a continuous, straight-walled, straight course oriented orthogonally to the axis of rotation of the bearing eyes 4.
  • the crossbar 2 covers the role 8 as far as possible. It is, as can be seen best from Figure 1, from the first to the second end 5, 7, except for the aforementioned bore 18 in the first longitudinal section 10 and the lubricant passage 17 in the first subsegment 12 of the second longitudinal section 1 1, continuously closed and shown largely smooth-walled. List of Reference Numbers) Rocker Arm

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne un culbuteur (1) en tôle d'acier, comprenant deux parois latérales (3) reliées d'une seule pièce par une traverse (2), lesquelles possèdent respectivement dans la zone de leur centre longitudinal un trou de montage (4) servant à l'appui sur un centre de basculement. Une zone de contact (6) pour une soupape d'échange de gaz est située à une première extrémité du culbuteur (1), sur un côté inférieur (19) de la traverse (2), d'une part, et les parois latérales (3) sont pontées par une surface de contact de came (8) à une deuxième extrémité (7) du culbuteur (1) d'autre part. Le culbuteur (1) se compose de deux parties longitudinales (10, 11) décalées latéralement l'une par rapport à l'autre, la première partie longitudinale (10) s'étendant à partir de la première extrémité (5) et présentant ladite zone de contact (6), et la deuxième partie longitudinale (11) étant formée par un premier sous-segment (12) au niveau des trous de montage (4) et un deuxième sous-segment (13) au niveau de la deuxième extrémité (7) munie de la surface de contact de came (8). Les parties longitudinales (10, 11) sont reliées par deux sections de paroi latérale (14) coudées dans le même sens, les parois latérales (3) présentent au niveau de la deuxième partie longitudinale (11) un profil de paroi entièrement droit, non bombé, orienté orthogonalement par rapport à l'axe de rotation du trou de montage (4), et les parois latérales (3) sont reliées par la traverse (2) sur leur côté supérieur (9).
PCT/DE2014/200169 2013-06-25 2014-04-15 Culbuteur Ceased WO2014206403A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013212072.9A DE102013212072A1 (de) 2013-06-25 2013-06-25 Kipphebel
DE102013212072.9 2013-06-25

Publications (1)

Publication Number Publication Date
WO2014206403A1 true WO2014206403A1 (fr) 2014-12-31

Family

ID=50771379

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200169 Ceased WO2014206403A1 (fr) 2013-06-25 2014-04-15 Culbuteur

Country Status (2)

Country Link
DE (1) DE102013212072A1 (fr)
WO (1) WO2014206403A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3410366A (en) * 1965-06-14 1968-11-12 John R. Winter Jr. Rocker arm lubrication system
US4979475A (en) * 1990-05-25 1990-12-25 Henley Manufacturing Holding Company, Inc. Rocker arm with rounded channel to engage a valve stem with semi-spherical end
JPH0310003U (fr) * 1989-06-20 1991-01-30
JP2001041011A (ja) * 1999-08-02 2001-02-13 Koyo Seiko Co Ltd ロッカアーム
JP2001355413A (ja) * 2000-06-13 2001-12-26 Koyo Seiko Co Ltd ロッカアーム
JP2003222005A (ja) * 2001-11-22 2003-08-08 Ntn Corp ロッカーアーム
JP2004176618A (ja) * 2002-11-27 2004-06-24 Koyo Seiko Co Ltd ロッカアーム
DE102005046897A1 (de) 2005-09-30 2007-04-05 Schaeffler Kg Kipphebel eines Ventiltriebs einer Brennkraftmaschine
US7392776B1 (en) * 2004-11-08 2008-07-01 Lawson Jackie L Rocker arm construction
DE102011012614A1 (de) * 2011-02-28 2012-08-30 Neumayer Tekfor Holding Gmbh Nockenfolger und Ventiltrieb
DE102011076728A1 (de) * 2011-05-30 2012-12-06 Schaeffler Technologies AG & Co. KG Kipphebel

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3410366A (en) * 1965-06-14 1968-11-12 John R. Winter Jr. Rocker arm lubrication system
JPH0310003U (fr) * 1989-06-20 1991-01-30
US4979475A (en) * 1990-05-25 1990-12-25 Henley Manufacturing Holding Company, Inc. Rocker arm with rounded channel to engage a valve stem with semi-spherical end
JP2001041011A (ja) * 1999-08-02 2001-02-13 Koyo Seiko Co Ltd ロッカアーム
JP2001355413A (ja) * 2000-06-13 2001-12-26 Koyo Seiko Co Ltd ロッカアーム
JP2003222005A (ja) * 2001-11-22 2003-08-08 Ntn Corp ロッカーアーム
JP2004176618A (ja) * 2002-11-27 2004-06-24 Koyo Seiko Co Ltd ロッカアーム
US7392776B1 (en) * 2004-11-08 2008-07-01 Lawson Jackie L Rocker arm construction
DE102005046897A1 (de) 2005-09-30 2007-04-05 Schaeffler Kg Kipphebel eines Ventiltriebs einer Brennkraftmaschine
DE102011012614A1 (de) * 2011-02-28 2012-08-30 Neumayer Tekfor Holding Gmbh Nockenfolger und Ventiltrieb
DE102011076728A1 (de) * 2011-05-30 2012-12-06 Schaeffler Technologies AG & Co. KG Kipphebel

Also Published As

Publication number Publication date
DE102013212072A1 (de) 2015-01-08

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