EP0074875A2 - Schwer belastbarer Kipphebel - Google Patents

Schwer belastbarer Kipphebel Download PDF

Info

Publication number
EP0074875A2
EP0074875A2 EP82401592A EP82401592A EP0074875A2 EP 0074875 A2 EP0074875 A2 EP 0074875A2 EP 82401592 A EP82401592 A EP 82401592A EP 82401592 A EP82401592 A EP 82401592A EP 0074875 A2 EP0074875 A2 EP 0074875A2
Authority
EP
European Patent Office
Prior art keywords
rocker arm
layers
wide
portions
openings
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
Application number
EP82401592A
Other languages
English (en)
French (fr)
Other versions
EP0074875B1 (de
EP0074875A3 (en
Inventor
Joseph L. Wherry
Ramanlal L. Patel
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.)
Toledo Stamping and Manufacturing Co
Original Assignee
Toledo Stamping and Manufacturing Co
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 Toledo Stamping and Manufacturing Co filed Critical Toledo Stamping and Manufacturing Co
Publication of EP0074875A2 publication Critical patent/EP0074875A2/de
Publication of EP0074875A3 publication Critical patent/EP0074875A3/en
Application granted granted Critical
Publication of EP0074875B1 publication Critical patent/EP0074875B1/de
Expired 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
    • F01L1/181—Centre pivot rocking arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • This invention relates to a heavy-duty rocker arm formed of stamped metal sheets.
  • the present invention provides a stamped rocker arm basically which consists of two stamped metal pieces or sheets, each having two wide portions joined by a narrow web portion.
  • the wide portions are turned back around the web portions and are located in contiguous relationship to form the main body portion of the rocker arm.
  • the web portions thereby form loops which carry push rod screws and stem pads.
  • the wide portions of one of the metal sheets have inner surfaces in contiguous relationship with the wide portions of the other metal sheet having inner surfaces in contiguous relationship with the outer surfaces of the first sheet.
  • the four layers of metal are affixed together, as by rivets, with the four layers providing the required strength for the main body portion of the rocker arm without excessive weight in outer portions.
  • the wide portions of the second sheet can be shaped to extend closer to the looped end portion of the first sheet, if desired, when greater strength is required of the outer portions of the rocker arm.
  • an overall rocker arm assembly for a diesel engine or the like is indicated at 10.
  • the assembly is located above a cylinder head 12 of the engine, on which are located two bearing blocks 14 carrying a rocker arm shaft 16 into which oil can be supplied from a suitable passage 18.
  • a center rocker arm 20 mounted on the shaft operates a fuel injector through a stem 22 while outer rocker arms 24 and 26 operate supply and exhaust valves of the engine cylinder therebelow through valve stems 28 and 30.
  • the rocker arm 20 for the injector is shown more fully in Figs. 2-5.
  • the rocker arm includes a first stamped metal piece or sheet 32 of generally bow-tie shape, when flat. It includes two wide end portions or layers 34 and 36 connected by a narrow web portion 38.
  • the first piece 32 is doubled back with the inner surfaces of the wide portions 34 and 36 in contiguous relationship, with the web portion 38 sized or drilled to form a loop 40.
  • the inner surfaces of the wide portions 34 and 36 have matching grooves 42 and 44 forming an oil passage 46 communicating with short, vertical grooves forming a short end or vertical passage 48 adjacent the loop 40.
  • An upper portion of the web portion 38 is staked to close off the loop 40 above the passage 48.
  • the inner surfaces of the wide portions 34 and 38 also have matching grooves 50 and 52 forming an oil passage 54 extending in the oppositive direction from the passage 46.
  • lower portions of the wide portions 34 and 36 have intermediate circular openings 56 and 58 through which the rocker arm shaft 16 will extend.
  • the rocker arm 20 also includes a second stamped metal piece or sheet 60 which is also of generally bow-tie shape, when flat. It includes two wide end portions or layers 62 and 64 connected by a narrow web portion 66.
  • the second piece 60 is doubled back to form a loop 68 with the inner surfaces of the wide portions 62 and 64 being contiguous' with the outer surfaces of the wide portions 34 and 36 of the first sheet 32.
  • the loop 68 cooperates with narrower ends of the wide portions 34 and 36, as shown in Fig. 3, to form an opening which is drilled and tapped to produce a threaded bore 70.
  • An engageable member or screw 86 has a threaded shank 88 threadably engaged in the threaded bore 70 and has a lower rounded end 90 engageable with the upper end of a push rod.
  • the screw 86 is of a known design, having an annular groove 92 with radially-extending passages 94 communicating with a central passage 96 for supplying oil from the passage 54 to the upper P n.d of the push rod.
  • the upper end of the screw 86 can have a hexagonal recess or the like for receiving a tool to adjust the screw up and down relative to the rocker arm, with a jam nut 98 holding the screw in position, when properly adjusted.
  • the rocker arm 24 for the valve stem 28 is shown in Fig. 6 without the engageable members assembled in the ends.
  • the rocker arm 24 also includes a first stamped metal piece or sheet -102 and a second stamped metal piece or sheet 104.
  • the basic difference between the rocker arms 20 and 24 from the standpoint of the instant invention is that the wide portions of the second metal piece 104 terminate near the rocker arm shaft openings rather than extend toward the outer end of the first stamped metal piece 102. This is because the force encountered at the outer end, near the valve stem 28 or 30, is not as high as that required for the injector stem 22. Consequently, the wide portions of the second stamped metal piece 104 can accordingly be shortened to reduce the weight of the overall rocker arm. Hence, this construction can be tailored to fit the strength and rigidity requirements of the particular rocker arm to maintain weight at a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Fuel-Injection Apparatus (AREA)
EP19820401592 1981-09-04 1982-08-27 Schwer belastbarer Kipphebel Expired EP0074875B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29938381A 1981-09-04 1981-09-04
US299383 1994-09-01

Publications (3)

Publication Number Publication Date
EP0074875A2 true EP0074875A2 (de) 1983-03-23
EP0074875A3 EP0074875A3 (en) 1983-06-15
EP0074875B1 EP0074875B1 (de) 1985-10-23

Family

ID=23154544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820401592 Expired EP0074875B1 (de) 1981-09-04 1982-08-27 Schwer belastbarer Kipphebel

Country Status (3)

Country Link
EP (1) EP0074875B1 (de)
JP (1) JPS5864805U (de)
DE (1) DE3267044D1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433278A1 (de) * 1994-09-19 1996-03-28 Motoren Werke Mannheim Ag Schmierung des Ventiltriebes
US6516766B2 (en) * 1997-04-23 2003-02-11 Koyo Seiko Co., Ltd. Rocker arm
EP1420147A1 (de) * 2002-11-12 2004-05-19 Schätti AG Aus miteinander verbundenen Lamellenstapeln bestehendes Werkstück
DE102004052998A1 (de) * 2004-11-03 2006-05-04 Deutz Ag Kipp- oder Schlepphebel mit Kugeldruckstück
WO2015154762A1 (de) * 2014-04-10 2015-10-15 Schaeffler Technologies AG & Co. KG Blechkipphebel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2585000B2 (ja) * 1987-07-01 1997-02-26 ヤンマーディーゼル株式会社 ディ−ゼル機関の吸、排気弁用弁腕支持構造
CN103850738A (zh) * 2014-03-28 2014-06-11 浙江龙虎锻造有限公司 一种气门摇臂轴

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578638A (en) * 1944-07-19 1951-12-11 John R Winter Sr Rocker arm
US2811959A (en) * 1954-12-28 1957-11-05 Gen Motors Corp Valve actuating mechanism
US3222950A (en) * 1964-06-03 1965-12-14 Jr John R Winter Rocker arm for internal-combustion engines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433278A1 (de) * 1994-09-19 1996-03-28 Motoren Werke Mannheim Ag Schmierung des Ventiltriebes
DE4433278B4 (de) * 1994-09-19 2004-05-27 Deutz Ag Schmierung des Ventiltriebes
US6516766B2 (en) * 1997-04-23 2003-02-11 Koyo Seiko Co., Ltd. Rocker arm
EP1420147A1 (de) * 2002-11-12 2004-05-19 Schätti AG Aus miteinander verbundenen Lamellenstapeln bestehendes Werkstück
DE102004052998A1 (de) * 2004-11-03 2006-05-04 Deutz Ag Kipp- oder Schlepphebel mit Kugeldruckstück
WO2015154762A1 (de) * 2014-04-10 2015-10-15 Schaeffler Technologies AG & Co. KG Blechkipphebel

Also Published As

Publication number Publication date
EP0074875B1 (de) 1985-10-23
DE3267044D1 (en) 1985-11-28
JPS5864805U (ja) 1983-05-02
JPH0227180Y2 (de) 1990-07-23
EP0074875A3 (en) 1983-06-15

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