[go: up one dir, main page]

WO1998011327A1 - Basculeur pour mecanisme de distribution d'un moteur alternatif a combustion interne - Google Patents

Basculeur pour mecanisme de distribution d'un moteur alternatif a combustion interne Download PDF

Info

Publication number
WO1998011327A1
WO1998011327A1 PCT/EP1997/003088 EP9703088W WO9811327A1 WO 1998011327 A1 WO1998011327 A1 WO 1998011327A1 EP 9703088 W EP9703088 W EP 9703088W WO 9811327 A1 WO9811327 A1 WO 9811327A1
Authority
WO
WIPO (PCT)
Prior art keywords
rocker arm
roller
side walls
radius
sheet metal
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/EP1997/003088
Other languages
German (de)
English (en)
Inventor
Steffen Hertrich
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.)
INA Waelzlager Schaeffler OHG
Original Assignee
INA Waelzlager Schaeffler OHG
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
Priority claimed from DE19637069A external-priority patent/DE19637069A1/de
Application filed by INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Priority to DE19780946T priority Critical patent/DE19780946D2/de
Priority to US09/242,965 priority patent/US6021750A/en
Priority to JP10513178A priority patent/JP2001500207A/ja
Publication of WO1998011327A1 publication Critical patent/WO1998011327A1/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
    • F01L1/02—Valve drive
    • F01L1/10—Valve drive by means of crank-or eccentric-driven rods
    • 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
    • F01L2305/00—Valve arrangements comprising rollers

Definitions

  • the invention relates to a rocker arm manufactured as a sheet metal part without cutting for a valve train of a reciprocating piston internal combustion engine, which, seen in cross section, has a U-shaped profile whose upper transverse wall facing a cam in a central section of the rocker arm has a substantially rectangular opening in plan view for receiving has a roller which rolls on the circumference of the cam, and whose side walls which extend downward from the transverse wall receive a bolt for mounting the roller, the side walls being convex at their edges delimiting the opening.
  • rocker arms for the valve train of reciprocating piston internal combustion engines were mostly designed as castings and, in order to reduce the friction occurring at the point of application of the cam on the rocker arm, were provided with a roller-mounted roller.
  • This design of the rocker arm could also be adhered to during its manufacture from sheet metal, this sheet metal finger follower being produced without cutting by cold forming the sheet metal.
  • the invention is therefore based on the object of stiffening the rocker arm produced from a sheet-metal process without the width of the rocker arm being influenced thereby.
  • this object is achieved by changing the vertical extent of the side walls, which is enlarged to such an extent that the roller lies within this extent of the side walls.
  • the stiffness of the rocker arm can thus be increased by increasing the side walls in the direction of the cam. All other dimensions of the rocker arm do not change, so that this structural change does not affect the other structural dimensions of the rocker arm.
  • a radius of the convex edges should correspond to a radius of the roller.
  • the side walls, the convex edges of which have an apex in the region of a plane through a longitudinal central axis of the bolt, would end with the radius of the roller.
  • the cam would have to dip into the rectangular opening.
  • recesses should be present in surfaces of the edges which are adjacent to the two end faces of the roller. By means of these recesses can be safely prevented that the cam lever actuating cam starts up on its side walls due to slight axial movements of the rocker arm. These recesses also have the advantage that spray oil can collect in them, which is directed to the end faces of the roller and thus into the rolling bearing.
  • the side walls can also run in a Z-shaped manner in the region of the opening above the bolt arrangement.
  • a Z-shaped course means that, starting from their vertical course, the side walls are first angled horizontally and then angled vertically again. This Z-shaped course prevents a weakening of the cross section that would occur if the recess were arranged.
  • the Z-shaped course of the side walls creates ribs on the outside thereof, these ribs do not have the disadvantage of the ribs provided according to the prior art at the lower edge of the rocker arm.
  • the side walls have a curvature on their outer surface in the region of the upper edges, so that even in the case of this proposed deformation there is no risk that immediately adjacent rocker arms are arranged at a greater distance due to these ribs in the upper region of the side walls Need to become.
  • FIG. 1 shows a side view of a rocker arm according to the invention
  • FIG. 2 shows a longitudinal section through the rocker arm according to FIG. 1,
  • Figure 4 shows a further embodiment of a rocker arm with a section through this rocker arm in the region of a roller arranged therein.
  • FIG. 1 denotes a rocker arm which can be supported in a first end region 2 on a support element (not shown), which receives a roller 3 in a central region and which engages in a second end region 4 on a valve stem end of a gas exchange valve (also not shown).
  • the roller 3 is rotatably supported by a pin 5 in the rocker arm 1 and can be acted upon by a cam 6 of a camshaft.
  • the entire rocker arm is U-shaped, i. that is, the U-shaped profile is open in this preferred embodiment on the side facing away from the cam 6.
  • the rocker arm 1 is an upper transverse wall 7 and side walls 8, 9, which can be seen in detail in the other Figure 3.
  • the transverse wall 7 is provided in the central section of the rocker arm 1 with a rectangular opening 10.
  • the roller 3 is mounted above the pin 5 in corresponding holes 13 and 14, a needle bearing, not shown, being arranged between the pin 5 and the roller 3 is.
  • the roller 3 lies within the vertical extent of the side walls 8 and 9. This allows the rocker arm to be stiffened in an advantageous manner.
  • the side walls are deformed parallel to the outside by a certain amount, so that there is an overall Z-shaped course.
  • a radius R 2 at the base of the recesses This results in sickle-shaped recesses 15 and 16 in longitudinal section.
  • side walls 17 and 18 are provided with recesses 19 and 20 which are formed in these side walls 17 and 18 by means of a non-cutting stamping process.
  • These recesses 19 and 20 have the same function as the recesses of FIG. 3 produced by the Z-shaped deformation of the 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 basculeur (1) produit sans enlèvement de copeaux à partir d'une tôle et présentant, vu en section, un profil en U ouvert vers le bas. Une paroi transversale supérieure de ce basculeur (1) comporte, vue d'en haut, une ouverture (10) sensiblement rectangulaire, dans laquelle se trouve un rouleau (3) pouvant être sollicité par une came (6). Les parois latérales (8 et 9) qui s'étendent vers le bas à partir de la paroi transversale (7), comprennent un boulon (5) servant à loger le rouleau (3). Des bords (11 et 12) supérieurs des parois latérales ( 8 et 9) sont convexes. La rigidité d'un basculeur (1) de ce type est améliorée du fait que les parois latérales sont augmentées dans leur extension verticale, jusqu'à ce que le rouleau (3) se trouve totalement à l'intérieur de cette extension verticale desdites parois latérales (8 et 9).
PCT/EP1997/003088 1996-09-12 1997-06-13 Basculeur pour mecanisme de distribution d'un moteur alternatif a combustion interne Ceased WO1998011327A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19780946T DE19780946D2 (de) 1996-09-12 1997-06-13 Schlepphebel für einen Ventiltrieb einer Hubkolbenbrennkraftmaschine
US09/242,965 US6021750A (en) 1996-09-12 1997-06-13 Finger lever for a valve drive of an internal combustion piston engine
JP10513178A JP2001500207A (ja) 1996-09-12 1997-06-13 往復行程ピストン内燃機関の弁駆動装置のためのロッカーアーム

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19637069A DE19637069A1 (de) 1996-09-12 1996-09-12 Schlepphebel für einen Ventiltrieb einer Hubkolbenbrennkraftmaschine
DE19637069.8 1996-09-12
US2779396P 1996-10-01 1996-10-01
US60/027,793 1996-10-01

Publications (1)

Publication Number Publication Date
WO1998011327A1 true WO1998011327A1 (fr) 1998-03-19

Family

ID=26029291

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/003088 Ceased WO1998011327A1 (fr) 1996-09-12 1997-06-13 Basculeur pour mecanisme de distribution d'un moteur alternatif a combustion interne

Country Status (4)

Country Link
JP (1) JP2001500207A (fr)
KR (1) KR20000036004A (fr)
DE (1) DE19780946D2 (fr)
WO (1) WO1998011327A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6199527B1 (en) 1998-03-12 2001-03-13 Nsk Ltd. Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof
US7779797B2 (en) 2005-09-08 2010-08-24 Honda Motor Co., Ltd. Engine valve operating system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1954365A1 (de) * 1969-10-29 1971-05-06 Burgdorf Maerten Dr Ing Verfahren zur Verminderung des Querschnittes von hohlen,insbesondere rohrfoermigen Werkstuecken
US4872429A (en) * 1987-12-14 1989-10-10 Ford Motor Company Method of making low friction finger follower rocker arms
DE3929486A1 (de) * 1988-09-12 1990-03-15 Henley Mfg Co Nockenstoessel-kipphebel
US5048475A (en) * 1991-01-17 1991-09-17 Henley Manufacturing Holding Company, Inc. Rocker arm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1954365A1 (de) * 1969-10-29 1971-05-06 Burgdorf Maerten Dr Ing Verfahren zur Verminderung des Querschnittes von hohlen,insbesondere rohrfoermigen Werkstuecken
US4872429A (en) * 1987-12-14 1989-10-10 Ford Motor Company Method of making low friction finger follower rocker arms
DE3929486A1 (de) * 1988-09-12 1990-03-15 Henley Mfg Co Nockenstoessel-kipphebel
US5048475A (en) * 1991-01-17 1991-09-17 Henley Manufacturing Holding Company, Inc. Rocker arm

Also Published As

Publication number Publication date
JP2001500207A (ja) 2001-01-09
KR20000036004A (ko) 2000-06-26
DE19780946D2 (de) 1999-05-27

Similar Documents

Publication Publication Date Title
DE4133033C2 (de) Schwinghebel
DE4336360C2 (de) Kipphebel zur Betätigung von zwei Ventilen
DE102007012797A1 (de) Kipphebel für einen Ventiltrieb einer Brennkraftmaschine
DE3929486A1 (de) Nockenstoessel-kipphebel
EP1573174B1 (fr) Levier intermediaire d'un mecanisme de commande variable de soupape d'un moteur a combustion interne
DE4112718A1 (de) Kipphebel mit schlitz fuer einen ventilschaft mit vorsprung
EP0483474B1 (fr) Vilebrequin de moteur à combustion interne
WO2007039414A1 (fr) Culbuteur asymetrique d'une commande de soupapes d'un moteur a combustion interne
DE112018005931B4 (de) Motor
DE4020891A1 (de) Wannenfoermiger kipphebel
DE19817849A1 (de) Kipphebel
WO2007039384A1 (fr) Poussoir a galet
DE19637069A1 (de) Schlepphebel für einen Ventiltrieb einer Hubkolbenbrennkraftmaschine
WO1997019258A1 (fr) Levier d'entrainement ou culbuteur façonne sans enlevement de copeaux
DE4337594C2 (de) Bolzenbefestigung an Kipp- oder Schlepphebeln
EP1357257B1 (fr) Culbuteur en tole
WO1998011327A1 (fr) Basculeur pour mecanisme de distribution d'un moteur alternatif a combustion interne
DE102010034201B4 (de) Rollenschlepphebel für eine Betätigung eines Gaswechselventils einer Brennkraftmaschine
WO1999025958A1 (fr) Basculeur forme sans enlevement de matiere
DE2349366C3 (de) Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE19830427A1 (de) Schlepphebel für einen Ventiltrieb einer Brennkraftmaschine
DE9401047U1 (de) Blechkipp- bzw. Schlepphebel
AT404377B (de) Türflügel-anschlagteil für möbelscharniere
DE602004007424T2 (de) Lagerstruktur einer Nockenwelle
DE10354683B4 (de) Hebelartiger Nockenfolger

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): DE JP KR US

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 09242965

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 1019997001961

Country of ref document: KR

ENP Entry into the national phase

Ref document number: 1998 513178

Country of ref document: JP

Kind code of ref document: A

REF Corresponds to

Ref document number: 19780946

Country of ref document: DE

Date of ref document: 19990527

WWE Wipo information: entry into national phase

Ref document number: 19780946

Country of ref document: DE

WWP Wipo information: published in national office

Ref document number: 1019997001961

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1019997001961

Country of ref document: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8607

REG Reference to national code

Ref country code: DE

Ref legal event code: 8607