WO2014173402A1 - Élément d'appui commutable - Google Patents

Élément d'appui commutable Download PDF

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Publication number
WO2014173402A1
WO2014173402A1 PCT/DE2014/200065 DE2014200065W WO2014173402A1 WO 2014173402 A1 WO2014173402 A1 WO 2014173402A1 DE 2014200065 W DE2014200065 W DE 2014200065W WO 2014173402 A1 WO2014173402 A1 WO 2014173402A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
bore
extended position
support element
ring
Prior art date
Application number
PCT/DE2014/200065
Other languages
German (de)
English (en)
Inventor
Oliver Schnell
Peter Sailer
Christian Geers
Original Assignee
Schaeffler Technologies Gmbh & 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 Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2014173402A1 publication Critical patent/WO2014173402A1/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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • 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
    • F01L2307/00—Preventing the rotation of tappets

Definitions

  • the invention relates to a switchable support member for a valve train of an internal combustion engine, with an insertable into a receptacle of a cylinder head of the internal combustion engine housing, in the bore an axially movable, from the housing acted upon by a spring means inner member sits, wherein in a radial bore of the inner member at least one Coupling slide extends, which is engageable in an axially extended position with a cam surface of the housing in engagement, wherein the extended position is limited by a height stop means and wherein an outer casing of the housing is surmounted by a projection for representing an outer anti-rotation.
  • the clip is exposed to enormous loads during operation.
  • the expert recognizes that the already thin-walled inner element is weakened because of the representation of the inner anti-rotation (Leksanflachungen) and loses leadership and sealing length.
  • a simple adjustment of the axially extended position of the inner element [coupling play] is also not possible because the clip may need to be disassembled after determining an actual game again.
  • switchable support elements are previously known, whose outer locking device is realized by means of a pin located in a window of the housing. The latter may possibly be solved during operation. In addition, it may be deformed during assembly of the housing.
  • this object is achieved in that as a height stop means at least one on a housing-side annular shoulder of the inner member circumferential snap ring is applied, which abuts radially outwardly and partially at least indirectly via the upper annular end to a lower ring edge of an annular groove of the housing in the attack case, said the snap ring is stacked with a circulating ring with a de-centered bore, from which circumferential race a tongue as the projection projects radially outwardly through a segment-like recess extending from an upper annular end of the housing recess of the housing.
  • the at least one snap ring possibly with voltage-reducing wave profile on the lateral surfaces, can be mounted very easily.
  • the inner element has sufficient guidance and sealing length.
  • the circulating ring can be designed as a simple stamped sheet metal part.
  • the assembly Partly thick constant circumferential rings and thickness-grouped snap rings for setting the height stop [coupling play] held, in which case the respective snap ring is preferably mounted above lying. It is advantageous to mount exactly two snap rings, which sandwich the circulating ring, in which case only the upper snap ring serves a fine adjustment of the coupling play.
  • the measures according to the invention can also be applied to roller tappets.
  • FIG. 1 shows a longitudinal section through a switchable support element, transverse to its coupling slides;
  • FIG. 2 shows a plan view of the support element with a second, upper snap ring, and
  • FIG. 3 shows an enlarged plan view of the support element with a circulation ring.
  • FIG. 1 shows a switchable support element 1 for a valve drive of an internal combustion engine, transverse to its two coupling slides 9 (see DE 102 04 672 A1), so that they can not be seen more accurately in their longitudinal extent within their radial bore 8.
  • the support element 1 has a cup-shaped housing 4 made of sheet metal, which is incorporated into a receptacle 2 of a cylinder head 3 of the internal combustion engine indicated here.
  • a bore 5 of the housing 4 extends an axially movable, out of the housing 4 out by a spring means 6 (helical compression spring pact) acted upon inner element 7 with a head 27.
  • the latter serves a one-end support of a finger lever.
  • the coupling slide 9 are located in the radial bore 8 diametrically opposite. They are in the illustrated axially extended position of the inner member 7 with a cam surface of the housing 4 in engagement, so that the valve lift is completed.
  • a height stop means 10 which in this case consists of two snap rings.
  • the latter run on a housing-side annular shoulder 13 of the inner member 7, wherein the upper of the snap rings 10 strikes radially outwardly in sections over the upper annular end 14 at a lower ring edge 15 of an annular groove 16 of the housing 4.
  • a circular ring 18 with a sunken hole 17 recorded, so that this does not twist can.
  • a tongue projects as a projection 12 radially outwardly in one piece.
  • the projection 12 in this case passes through a segment-like, emanating from an upper annular end 19 of the housing 4 recess 20 of the housing 4.
  • the upper snap ring 10 is grouped in thicknesses and paired.
  • the upper snap ring 10 is provided at its inner edge 21 with a flattening 22 (the lower, not apparent snap ring 10 also).
  • the flattening 22 abuts a flat 24 of an outer shell 23 of the inner member 7 to form an inner anti-rotation.
  • Free ends 25 of the snap ring 10 are angled radially outward and extend to legs 26 of the recess 20 of the housing 4th

Abstract

La présente invention concerne un élément d'appui commutable (1) destiné à une commande de soupapes d'un moteur à combustion interne. Ledit élément d'appui comporte un boîtier (4) dans l'alésage (5) duquel est logé un élément intérieur (7) mobile axialement. Un ou plusieurs coulisseaux d'accouplement (9) s'étendent dans un alésage radial (8) de l'élément intérieur (7). Dans une position axialement déployée, les un ou plusieurs coulisseaux d'accouplement peuvent être amenés en prise avec une surface d'entraînement du boîtier (4). La position déployée est limitée par un moyen de butée en hauteur (10). Une saillie (12) dépasse de l'enveloppe extérieure (11) du boîtier (4) et sert de dispositif antirotation externe. Un ou plusieurs circlips sont utilisés comme moyens de butée en hauteur (10). Ces circlips s'étendent circulairement sur un épaulement annulaire (13), côté boîtier, de l'élément intérieur (7). Ils s'appuient radialement à l'extérieur par portions et au moins indirectement par son extrémité annulaire supérieure (14) sur un bord de bague inférieur (15) d'une gorge annulaire (16) du boîtier (4). Le ou les circlips (10) sont empilés avec une bague périphérique (18) à perçage désaxé (17). Une languette configurée en saillie (12) dépasse de ladite bague périphérique (18) radialement vers l'extérieur à travers un évidement (20) du boîtier (4) en forme de segment qui sort par une extrémité annulaire supérieure (19) du boîtier (4).
PCT/DE2014/200065 2013-04-24 2014-02-17 Élément d'appui commutable WO2014173402A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013207404.2A DE102013207404A1 (de) 2013-04-24 2013-04-24 Schaltbares Abstützelement
DE102013207404.2 2013-04-24

Publications (1)

Publication Number Publication Date
WO2014173402A1 true WO2014173402A1 (fr) 2014-10-30

Family

ID=50382176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200065 WO2014173402A1 (fr) 2013-04-24 2014-02-17 Élément d'appui commutable

Country Status (2)

Country Link
DE (1) DE102013207404A1 (fr)
WO (1) WO2014173402A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416852A (en) * 1942-12-17 1947-03-04 Waldes Koh I Noer Inc Retaining ring
US5263386A (en) * 1992-11-24 1993-11-23 General Motors Corporation Roller cam follower guide
DE10204672A1 (de) 2002-02-06 2003-08-07 Ina Schaeffler Kg Schaltelement für einen Ventiltrieb einer Brennkraftmaschine
DE102008048926A1 (de) 2007-10-10 2009-04-16 Schaeffler Kg Schaltbares Bauteil für einen Ventiltrieb einer Brennkraftmaschine
DE102008059567A1 (de) * 2007-12-20 2009-06-25 Schaeffler Kg Schaltbares Bauteil für einen Ventiltrieb einer Brennkraftmaschine
US20090199805A1 (en) * 2008-02-11 2009-08-13 Hendriksma Nick J Deactivating hydraulic lash adjuster for oriented mounting in an engine
DE102008052279A1 (de) * 2008-10-18 2010-04-22 Schaeffler Kg Schaltbares Bauteil für einen Ventiltrieb einer Brennkraftmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416852A (en) * 1942-12-17 1947-03-04 Waldes Koh I Noer Inc Retaining ring
US5263386A (en) * 1992-11-24 1993-11-23 General Motors Corporation Roller cam follower guide
DE10204672A1 (de) 2002-02-06 2003-08-07 Ina Schaeffler Kg Schaltelement für einen Ventiltrieb einer Brennkraftmaschine
DE102008048926A1 (de) 2007-10-10 2009-04-16 Schaeffler Kg Schaltbares Bauteil für einen Ventiltrieb einer Brennkraftmaschine
DE102008059567A1 (de) * 2007-12-20 2009-06-25 Schaeffler Kg Schaltbares Bauteil für einen Ventiltrieb einer Brennkraftmaschine
US20090199805A1 (en) * 2008-02-11 2009-08-13 Hendriksma Nick J Deactivating hydraulic lash adjuster for oriented mounting in an engine
DE102008052279A1 (de) * 2008-10-18 2010-04-22 Schaeffler Kg Schaltbares Bauteil für einen Ventiltrieb einer Brennkraftmaschine

Also Published As

Publication number Publication date
DE102013207404A1 (de) 2014-11-13

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