WO2014071926A1 - Culbuteur en tôle - Google Patents

Culbuteur en tôle Download PDF

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Publication number
WO2014071926A1
WO2014071926A1 PCT/DE2013/200137 DE2013200137W WO2014071926A1 WO 2014071926 A1 WO2014071926 A1 WO 2014071926A1 DE 2013200137 W DE2013200137 W DE 2013200137W WO 2014071926 A1 WO2014071926 A1 WO 2014071926A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet metal
rocker arm
base body
section
bearing
Prior art date
Application number
PCT/DE2013/200137
Other languages
German (de)
English (en)
Inventor
Andreas GRÖTSCH
Claudia Zielinski
Original Assignee
Schaeffler Technologies AG & 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 & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to IN1792DEN2015 priority Critical patent/IN2015DN01792A/en
Publication of WO2014071926A1 publication Critical patent/WO2014071926A1/fr

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

Definitions

  • the invention relates to a sheet metal tilt lever for actuating a gas exchange valve of an internal combustion engine.
  • rocker arms are arranged in internal combustion engines within a valve train as transmission elements between cams and the gas exchange valves to be actuated.
  • Each rocker arm consists of a base body, which at one end has at one end a tapping surface for a cam and at another end a contact surface for a valve body of a gas exchange valve.
  • the contact surface can be formed directly on the rocker arm or, for example, indirectly by a screw.
  • a middle-immediate section of the main body is pivotally fixed on a stationary center of rotation.
  • two mutually aligned bores in the side walls for pivotally receiving the rocker arm are usually provided on a pivot axis.
  • Such rocker arms require a journal bearing to guide the rocker shaft.
  • a rocker arm which has an elongate base body with two side walls connected by a transverse bar. Furthermore, the main body of the rocker arm is cranked.
  • a rocker arm which has a longitudinal lent base body with two connected by a cross bar side walls. Furthermore, the main body of the rocker arm is cranked and has a U-like profile in cross-section. In the central portion of the body, the side walls have two mutually aligned and formed as bores openings, which serve to receive the rocker arm on an axis or a center of rotation.
  • Object of the present invention is to provide a sheet metal rocker len, which is inexpensive and easy to produce.
  • a Blechkipphebel for actuating at least one gas exchange valve of an internal combustion engine having an elongate base body having two connected by a cross bar side walls, wherein a first end portion of the base body a contact surface for a cam and a second end portion of the body a contact surface for a valve stem end of the gas exchange valve, and wherein an intermediate portion has a bearing for a rocker shaft, wherein the bearing is formed of two opposing holes in the side walls, of which exactly one bore has an integrally formed with the body protruding tubular segment and wherein the other Hole is formed only in width of the side wall.
  • rocker arms In addition to rocker arms, other lever-type cam followers, such as rocker arms or rocker arms, can also be used.
  • the bearing or a bearing point for the rocker arm axis is formed by means of two opposing bores. trained. One of the two holes has a tubular segment formed integrally therefrom. This rohrformige segment is from the corresponding side wall. The second bore forms a through opening in the other side wall. The rohrformige segment is preferably provided on the more heavily loaded side wall of the rocker arm.
  • the rohrformige segment has various areas, which result from the production.
  • a first region which is located in the region of the side wall, has a radius which merges into a second region extending almost rectilinearly.
  • the first area has no supporting function.
  • the second area is the area that protrudes from the side wall. This fulfills the supporting function of the warehouse.
  • the rohrformige segment is directed inward. This means that the rohrformige segment extends from one side wall in the direction of the other side wall.
  • a recess for example by means of punching, can be provided in this region of the transverse bow. This has the advantage that the weight of the rocker arm can be reduced.
  • the rohrformige segment faces outward.
  • the tubular segment extends in a direction remote from the rocker arm.
  • the base body can be reduced in width.
  • a reduction of the total weight can be achieved.
  • the base body has an inverted U-like profile.
  • the inverted U-like profile is opened in the gas exchange valve direction. Conceivable, however, are also U-like or H-like profiles.
  • the base body has a cranked profile. The two end sections of the basic body are offset in the opposite direction to the central section of the basic body along a fictitious longitudinal axis. This embodiment is particularly advantageous for correspondingly tight installation conditions.
  • the crossbar has a roof-like elevation in its middle-near section and, in its second end section, a continuous opening in the attachment for a valve clearance adjustment screw.
  • the opening can be designed for example as a bore with or without thread.
  • the valve clearance adjusting screw can form the contact surface for a valve stem end of the gas exchange valve.
  • the sheet metal tilting lever is designed in such a way that the crossbeam in the mid-mid section has an elevation which can be roof-like or triangular-like. Any other form of survey is also conceivable.
  • the two end portions are formed such that the side walls in these areas have a lower height than in the middle-near section.
  • the base body is produced from a sheet metal material by means of stamping bending technology.
  • stamping bending technology there are also other materials, such as. Sintered material, casting material and the like. Possible.
  • the reverse U-like profile can be inexpensively manufactured by bending from a sheet metal blank.
  • Fig. 1 is a plan view of a Blechkipphebel according to the invention according to a first embodiment
  • Fig. 2 is a plan view of a sheet metal tilt lever according to the invention according to a second embodiment.
  • FIG. 1 shows a top view of a rocker arm 1 according to the invention, which is produced from a sheet metal material, according to a first embodiment.
  • the rocker arm 1 has an elongated base body 2, which has two side walls 4, 5 connected by a transverse bar 3.
  • the crossbar 3 and the side walls 4, 5 form in cross section an inverted U-like profile.
  • the main body 2 is subdivided into a first end section 6, a mid-section 7 and a second end section 8.
  • the main body 2 has a cranked profile. In the region of the first end section 6, the distance between the side walls 4, 5 is less than in the other course.
  • the side wall 4 extends in the region of the first end portion 6 and the central portion 7 almost straight. In the region of the second end portion 8, the side walls 4, 5 are curved and parallel to each other.
  • the crossbar 3 has a recess in the region of the first end section 6.
  • the first end portion 6 forms a contact surface for a cam, which are not shown in the figure.
  • the contact surface can be formed for example by means of a cam roller, which is provided in the recess 9.
  • the cam roller can be held on a bearing pin via a roller bearing, which is supported on the side walls 4, 5.
  • the second end portion 8 has a contact surface 10 for an unillustrated valve stem end of a gas exchange valve.
  • the contact surface 10 is formed by a screw, not shown. To accommodate the screw is a threaded hole 1 1 available.
  • the transom 3 has a roof-like elevation, which is not shown in the figures. At this point, the height of the side walls 4, 5 greater than the height of the side walls 4, 5 in the region of the first and second end portions 6, eighth
  • a bearing 12 is provided for a rocker shaft.
  • the bearing 12 is formed from two opposing holes 13, 14.
  • the bore 13 is formed only in width of the side wall 4, whereby a through opening 15 is formed in the side wall 4.
  • the other bore 14 has an integrally projecting with the base body 2 tubular segment 16.
  • the tubular segment 16 is formed out of the bore 14. As can be seen from FIG. 1, the tubular segment 16 projects outwards. That is, the segment 16 extends in the rocker arm remote direction.
  • the segment 16 has two regions 17, 18.
  • the first region 17 is provided in the region of the side wall 5. This has a radius followed by a straight course of the segment 16.
  • the first area 17 fulfills no supporting function.
  • the second region 18 is the projecting portion of the segment 16, which fulfills the bearing function for the bearing 12.
  • FIG. 2 shows a second exemplary embodiment of the rocker arm 1. For ease of description, corresponding parts will be identified by the same reference numerals as in the preceding FIG. 1.
  • the rocker arm 1 basically corresponds to the structure of the rocker arm 1 shown in FIG.
  • the design of the bearing 19 is different.
  • the bearing 19 is formed of two opposing holes 20, 21.
  • the bore 20 is formed only in width of the side wall 4, whereby a through opening 21 is formed.
  • the other bore 22 has an integrally projecting with the base body 2 rohrformiges segment 23.
  • the tubular segment 23 is formed out of the bore 22. As can be seen from FIG. 2, the tubular segment 23 projects inwards. That is, the segment 23 extends from the side wall 5 in the direction of the side wall 4, without making a connection with the side wall 4.
  • the segment 23 shown in FIG. 2 has two regions 24, 25.
  • the first region 24, in contrast to the second region 25, also fulfills no supporting function here.

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 en tôle destiné à actionner au moins une soupape d'échange des gaz d'un moteur à combustion interne. Ce culbuteur est pourvu d'un corps de base (2) allongé, lequel présente deux parois latérales (4, 5) reliées par une traverse (3). Une première section d'extrémité (6) du corps de base (2) présente une surface d'appui pour une came et une deuxième section d'extrémité (8) du corps de base (2) présente une surface de contact (10) pour une extrémité de tige de la soupape d'échange des gaz. Une section (7) proche du centre comprend un support (12, 19) pour un axe du culbuteur, le palier (12, 19) étant constitué de deux alésages (13, 14, 20, 21) opposés dans les parois latérales (4, 5), parmi lesquels précisément un alésage (13, 4, 20, 21) comprend un segment tubulaire (16, 23) en saillie et réalisé d'une seule pièce avec le corps de base (2), et l'autre alésage (13, 14, 20, 21) n'est ménagé que dans la largeur de la paroi latérale (4, 5).
PCT/DE2013/200137 2012-11-06 2013-08-26 Culbuteur en tôle WO2014071926A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IN1792DEN2015 IN2015DN01792A (fr) 2012-11-06 2013-08-26

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210220142 DE102012220142A1 (de) 2012-11-06 2012-11-06 Blechkipphebel
DE102012220142.4 2012-11-06

Publications (1)

Publication Number Publication Date
WO2014071926A1 true WO2014071926A1 (fr) 2014-05-15

Family

ID=49182027

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2013/200137 WO2014071926A1 (fr) 2012-11-06 2013-08-26 Culbuteur en tôle

Country Status (3)

Country Link
DE (1) DE102012220142A1 (fr)
IN (1) IN2015DN01792A (fr)
WO (1) WO2014071926A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968739A (zh) * 2017-05-11 2017-07-21 杭州新坐标科技股份有限公司 一种轻量化高强度的柴油机滚轮摇臂

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203712A1 (de) 2016-03-08 2017-09-14 Schaeffler Technologies AG & Co. KG Kipphebelanordnung für einen Ventiltrieb einer Brennkraftmaschine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418985A (en) * 1967-09-01 1968-12-31 Hirose Kazuo Rocker arm for internal combustion engines
US5010857A (en) * 1990-08-15 1991-04-30 Ni Industries, Inc. Rocker arm
WO1997032116A1 (fr) * 1996-02-28 1997-09-04 Cummins Engine Company, Inc. Deflecteur de lubrifiant destine a des culbuteurs
WO1998041740A1 (fr) * 1997-03-20 1998-09-24 E & E Manufacturing Company, Inc. Procede servant a fabriquer un culbuteur
US6293168B1 (en) * 1999-10-06 2001-09-25 The Torrington Company Stamped rocker arms for machines such as internal combustion engines
WO2007039414A1 (fr) 2005-09-30 2007-04-12 Schaeffler Kg Culbuteur asymetrique d'une commande de soupapes d'un moteur a combustion interne
DE102007012734A1 (de) * 2007-03-16 2008-09-18 Schaeffler Kg Kipphebel für einen Ventiltrieb einer Brennkraftmaschine
DE102007012797A1 (de) 2007-03-16 2008-09-18 Schaeffler Kg Kipphebel für einen Ventiltrieb einer Brennkraftmaschine
DE102008009901A1 (de) * 2007-04-27 2008-11-06 Schaeffler Kg Kipphebel eines Ventiltriebs einer Brennkraftmaschine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418985A (en) * 1967-09-01 1968-12-31 Hirose Kazuo Rocker arm for internal combustion engines
US5010857A (en) * 1990-08-15 1991-04-30 Ni Industries, Inc. Rocker arm
WO1997032116A1 (fr) * 1996-02-28 1997-09-04 Cummins Engine Company, Inc. Deflecteur de lubrifiant destine a des culbuteurs
WO1998041740A1 (fr) * 1997-03-20 1998-09-24 E & E Manufacturing Company, Inc. Procede servant a fabriquer un culbuteur
US6293168B1 (en) * 1999-10-06 2001-09-25 The Torrington Company Stamped rocker arms for machines such as internal combustion engines
WO2007039414A1 (fr) 2005-09-30 2007-04-12 Schaeffler Kg Culbuteur asymetrique d'une commande de soupapes d'un moteur a combustion interne
DE102007012734A1 (de) * 2007-03-16 2008-09-18 Schaeffler Kg Kipphebel für einen Ventiltrieb einer Brennkraftmaschine
DE102007012797A1 (de) 2007-03-16 2008-09-18 Schaeffler Kg Kipphebel für einen Ventiltrieb einer Brennkraftmaschine
DE102008009901A1 (de) * 2007-04-27 2008-11-06 Schaeffler Kg Kipphebel eines Ventiltriebs einer Brennkraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968739A (zh) * 2017-05-11 2017-07-21 杭州新坐标科技股份有限公司 一种轻量化高强度的柴油机滚轮摇臂
CN106968739B (zh) * 2017-05-11 2022-08-05 杭州新坐标科技股份有限公司 一种轻量化高强度的柴油机滚轮摇臂

Also Published As

Publication number Publication date
IN2015DN01792A (fr) 2015-05-29
DE102012220142A1 (de) 2014-05-08

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