EP0950799A2 - Linguet - Google Patents

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Publication number
EP0950799A2
EP0950799A2 EP99105919A EP99105919A EP0950799A2 EP 0950799 A2 EP0950799 A2 EP 0950799A2 EP 99105919 A EP99105919 A EP 99105919A EP 99105919 A EP99105919 A EP 99105919A EP 0950799 A2 EP0950799 A2 EP 0950799A2
Authority
EP
European Patent Office
Prior art keywords
rocker arm
roller
bearing
valve
side parts
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.)
Withdrawn
Application number
EP99105919A
Other languages
German (de)
English (en)
Other versions
EP0950799A3 (fr
Inventor
Dieter Dipl.-Ing. Voigt
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP0950799A2 publication Critical patent/EP0950799A2/fr
Publication of EP0950799A3 publication Critical patent/EP0950799A3/fr
Withdrawn legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a rocker arm, in particular roller rocker arm or rocker arm, for a valve train of an internal combustion engine with a camshaft, cams assigned to each rocker arm, the rocker arm a Rocker arm body and at least one rotatably mounted on the rocker arm body Has role, the rocker arm on a bearing and a Valve actuating element of a valve to be actuated supports and a respective cam rolling the rocker arm on the roller with a force, according to Preamble of claim 1.
  • the invention further relates to a method for manufacturing a rocker arm, in particular roller rocker arm or rocker arm, for one Valve train of an internal combustion engine, the rocker arm having a rocker arm body according to the preamble of claim 16.
  • valve drives of internal combustion engines are used to reduce friction in parts involved increasingly rocker arms in the form of roller rocker arms for a Valve actuation used, as are known for example from DE 43 05 759 A1.
  • the trend is towards the inexpensive sheet metal finger follower, although at certain demands on investment casting or forging levers Restrictions of use result from rigidity reasons.
  • rocker arm or rocker arm described which is fork-shaped and manufactured as a non-cutting formed sheet metal part becomes.
  • the rocker arm is in one piece and open on one side U-shaped.
  • EP 0 573 674 B1 describes a rocker arm which is made by punching a metal plate to a rocker arm body with a U-shaped profile and folding the rocker arm body in such a way that the side walls are aligned parallel to each other.
  • GB 2 020 389 A discloses a rocker arm for a valve train Internal combustion engine which is bent from a sheet metal strip into a U-shaped one Profile is made.
  • rocker arms in which the rocker arm body in one piece from a single part is produced by means of appropriate bending processes have the disadvantage that the area between the side parts of the rocker arm body made of the same thin-walled material how the side parts are made themselves, which also leads to mechanically weak spots can lead to a force being introduced into the rocker arm.
  • the present invention is therefore based on the task of a rocker arm to provide the above type, the above disadvantages be overcome and a stable rocker arm with low manufacturing and Cost is made available.
  • connection element on the bearing side is on one resting pivot point arranged as a bearing, preferably the bearing side Connecting element is designed as a socket which engages around a rocker arm axis.
  • this is the bearing side Connection element preferably as a bolt and the bearing with an open half-shell Storage of the bolt is formed.
  • bearing-side connecting element For storage on a bearing designed as a support element with a ball head is in particularly preferably the bearing-side connecting element as a hemisphere educated.
  • a simple grip around the cam with the appropriate side guide is achieved characterized in that the side parts are widened in the direction of the cam in the region of the roller are.
  • the rocker arm is on Sheet metal finger followers and the side parts are punched out metal parts, in particular Sheet metal parts.
  • step (a) is punched out of a metal strip.
  • step (b) the connection is expediently carried out by pressing, riveting or Welding.
  • Rocker arms 10 are in a valve train for a not shown Internal combustion engine integrated.
  • a camshaft 12 with corresponding cams 14 is provided, which acts on a roller 16 of the rocker arm 10.
  • the cam is there formed in a known manner such that when the camshaft 12 rotates a Force is exerted by the cam 14 on the rocker arm 10.
  • the rocker arm 10 is supported on a bearing side 18 on a bearing 20 (FIGS. 3 and 4) from. On a valve side 21 of the rocker arm 10 opposite the bearing side 18 this acts on a valve stem 22 of a valve which is otherwise not shown in detail, which is acted upon by a spring 24 in the closing direction.
  • the cam 14 rolls on the roller 16 of the rocker arm, wherein due to the asymmetrical contour of the cam 14 a cyclic force on the Rocker arm acts that it is pivoted cyclically about a rocker arm axis 26 and thereby presses against the force of the spring 24 on the valve lifter 22 and so that Valve opens.
  • the structure of the rocker arm 10 according to the invention can be seen in particular from FIG. 2.
  • Two separate side parts or side webs 28 are rigid by three Connecting elements 30, 32 and 34 firmly to one another, for example by means of riveting, Welding or pressing, connected.
  • a first connecting element 30 on the bearing side 18 is, for example, in the form of a Bush formed (Fig. 1) which engages around the rocker arm axis 26 and thus a appropriate bearing for the rocker arm creates.
  • the first connecting element 30 is designed as a bolt, which on a support element or the bearing 20 with a correspondingly open at the top Half shell is stored.
  • this is first connecting element 30 as a hemisphere for storage on a support element formed with ball head 36.
  • a second connecting element 32 is in a central section of the rocker arm 10 arranged and designed as a bolt.
  • the roller 16 is rotatably mounted on this bolt.
  • a third connecting element 34 is arranged on the valve side 21 and as a bolt educated. This lies with a pivot point, which as a contact contour and in particular Rolling radius is formed on the valve stem 22.
  • On the bearing side 21 of the Rocker arms 20 enclose the side walls 28 on both sides of the bolt 34, whereby a Lever guidance is available, and are so cranked that the Adapts the distance between the side walls 28 to the valve stem 22.
  • FIGS. 5 and 6 differ of the previous embodiments in that in the region of the roller 16 Side parts 28 are designed to be raised in the direction of the cam 14, so that the side parts 28 protrude on both sides into a contour of the cam 14.
  • the cam 14 is partially arranged between the two side parts 28 of the rocker arm 10. That way an increase in the rocker arm stiffness in the area of the force applied by the Cam 14 and a lateral guide provided.
  • the rocker arm 10 while maintaining stiff side parts 28 a stable arrangement available.
  • There Load forces are introduced into the rocker arm precisely via this connecting element there is an improvement or increase in the mechanical rigidity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP99105919A 1998-04-09 1999-03-24 Linguet Withdrawn EP0950799A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816020 1998-04-09
DE19816020A DE19816020A1 (de) 1998-04-09 1998-04-09 Schlepphebel

Publications (2)

Publication Number Publication Date
EP0950799A2 true EP0950799A2 (fr) 1999-10-20
EP0950799A3 EP0950799A3 (fr) 2000-03-01

Family

ID=7864175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105919A Withdrawn EP0950799A3 (fr) 1998-04-09 1999-03-24 Linguet

Country Status (2)

Country Link
EP (1) EP0950799A3 (fr)
DE (1) DE19816020A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243765A1 (fr) * 2001-03-19 2002-09-25 Yamaha Hatsudoki Kabushiki Kaisha Moteur à combustion interne à levée variable des soupapes
DE102017124489A1 (de) 2017-10-19 2019-04-25 Thyssenkrupp Ag Nockenwelle, Nockenwellenmodul, Verfahren zum reibungsverringernden Betreiben einer Nockenwelle und Verwendung eines oder mehrerer Piezoelemente zur Schwingungsanregung einer Nockenwelle

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10235402A1 (de) * 2002-08-02 2004-02-12 Bayerische Motoren Werke Ag Schwenkhebel für einen hubvariablen Ventiltrieb
DE10237448A1 (de) * 2002-08-16 2004-02-26 Volkswagen Ag Schwinghebel zum Antrieb eines Pumpe-Düse-Elementes einer Brennkraftmaschine
DE10330882A1 (de) * 2003-07-09 2005-01-27 Ina-Schaeffler Kg Verfahren zur Herstellung eines Außenhebels eines schaltbaren Schlepphebels
DE10330881A1 (de) * 2003-07-09 2005-01-27 Ina-Schaeffler Kg Verfahren zur Herstellung eines Außenhebels eines schaltbaren Schlepphebels
DE102006054406B4 (de) * 2006-11-18 2016-09-15 Schaeffler Technologies AG & Co. KG Hubübertragungsbauteil und Verfahren zu dessen Herstellung
FR2928409B1 (fr) * 2008-03-06 2015-06-19 Skf Ab Culbuteur pour moteur a combustion interne
DE102008060154A1 (de) * 2008-12-02 2010-07-22 Mahle International Gmbh Kipp-oder Schwenkhebel einer Ventiltriebeinrichtung
DE102009032582A1 (de) * 2009-07-10 2011-01-13 Schaeffler Technologies Gmbh & Co. Kg Schlepphebel
WO2012175070A1 (fr) 2011-06-20 2012-12-27 Neumayer Tekfor Holding Gmbh Levier basculant et moteur à combustion interne pourvu d'un tel levier

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926645A (en) 1959-06-15 1960-03-01 Guarraia Joseph Rocker arm assembly for internal combustion engines
GB2020389A (en) 1978-05-03 1979-11-14 Bayerische Motoren Werke Ag Rocker arm for a valve gear of an internal combustion engine
JPS6375305A (ja) 1986-08-07 1988-04-05 ザ・ヘンリ−・グル−プ・インコ−ポレ−テッド バルブ作動機構
JPS6422801U (fr) 1987-08-03 1989-02-07
JPH01167404A (ja) 1987-12-23 1989-07-03 Toyota Motor Corp 繊維強化樹脂製バルブリフタの製造方法
DE3929486A1 (de) 1988-09-12 1990-03-15 Henley Mfg Co Nockenstoessel-kipphebel
US5016582A (en) 1990-10-12 1991-05-21 Henley Manufacturing Holding Company, Inc. Rocker arm
EP0573674A1 (fr) 1992-01-07 1993-12-15 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Culbuteur a roulette et procede de fabrication associe
DE4305759A1 (de) 1992-09-26 1994-03-31 Volkswagen Ag Ventiltrieb für ein Hubventil mit einem nockenbetätigten Rollenschlepphebel
DE19618417A1 (de) 1996-05-08 1997-11-13 Schaeffler Waelzlager Kg Betätigungshebel für eine mit Mehrventiltechnik ausgerüstete Brennkraftmaschine
DE19631653A1 (de) 1996-08-05 1998-02-12 Hatz Motoren Kipphebel für eine Brennkraftmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2022801A (en) * 1932-06-15 1935-12-03 American Chain & Cable Co Sheet metal yoke and process of making same
US2572968A (en) * 1947-03-11 1951-10-30 Continental Aviat & Eng Corp Rocker arm construction
US3610218A (en) * 1970-04-13 1971-10-05 Roger Owen Durham Desmodromic valve actuator
US4944257A (en) * 1989-09-27 1990-07-31 Henley Manufacturing Holding Company, Inc. Cold-formed rocker arm with bearing flanges and splash plate
JP2879511B2 (ja) * 1993-07-07 1999-04-05 光洋精工株式会社 プレス製ロッカアーム、およびその製造方法
JPH07150909A (ja) * 1993-11-29 1995-06-13 Koyo Seiko Co Ltd ロッカアーム
DE19516638A1 (de) * 1995-05-05 1996-11-07 Bayerische Motoren Werke Ag Ventiltrieb mit einer gesonderten Steuereinrichtung für insbesondere variable Ventilöffnungswinkel, vor allem für Brennkraftmaschinen

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926645A (en) 1959-06-15 1960-03-01 Guarraia Joseph Rocker arm assembly for internal combustion engines
GB2020389A (en) 1978-05-03 1979-11-14 Bayerische Motoren Werke Ag Rocker arm for a valve gear of an internal combustion engine
JPS6375305A (ja) 1986-08-07 1988-04-05 ザ・ヘンリ−・グル−プ・インコ−ポレ−テッド バルブ作動機構
JPS6422801U (fr) 1987-08-03 1989-02-07
JPH01167404A (ja) 1987-12-23 1989-07-03 Toyota Motor Corp 繊維強化樹脂製バルブリフタの製造方法
DE3929486A1 (de) 1988-09-12 1990-03-15 Henley Mfg Co Nockenstoessel-kipphebel
JPH0275707A (ja) 1988-09-12 1990-03-15 Henley Mfg Corp ロッカアーム
US5016582A (en) 1990-10-12 1991-05-21 Henley Manufacturing Holding Company, Inc. Rocker arm
EP0573674A1 (fr) 1992-01-07 1993-12-15 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Culbuteur a roulette et procede de fabrication associe
DE4305759A1 (de) 1992-09-26 1994-03-31 Volkswagen Ag Ventiltrieb für ein Hubventil mit einem nockenbetätigten Rollenschlepphebel
DE19618417A1 (de) 1996-05-08 1997-11-13 Schaeffler Waelzlager Kg Betätigungshebel für eine mit Mehrventiltechnik ausgerüstete Brennkraftmaschine
DE19631653A1 (de) 1996-08-05 1998-02-12 Hatz Motoren Kipphebel für eine Brennkraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1243765A1 (fr) * 2001-03-19 2002-09-25 Yamaha Hatsudoki Kabushiki Kaisha Moteur à combustion interne à levée variable des soupapes
DE102017124489A1 (de) 2017-10-19 2019-04-25 Thyssenkrupp Ag Nockenwelle, Nockenwellenmodul, Verfahren zum reibungsverringernden Betreiben einer Nockenwelle und Verwendung eines oder mehrerer Piezoelemente zur Schwingungsanregung einer Nockenwelle

Also Published As

Publication number Publication date
DE19816020A1 (de) 1999-10-14
EP0950799A3 (fr) 2000-03-01

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