EP2739831A1 - Schaltbares ventiltriebsglied - Google Patents
Schaltbares ventiltriebsgliedInfo
- Publication number
- EP2739831A1 EP2739831A1 EP12717307.8A EP12717307A EP2739831A1 EP 2739831 A1 EP2739831 A1 EP 2739831A1 EP 12717307 A EP12717307 A EP 12717307A EP 2739831 A1 EP2739831 A1 EP 2739831A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- valve drive
- drive member
- protective cap
- receptacle
- 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
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
- F01L1/14—Tappets; Push rods
- F01L1/143—Tappets; Push rods for use with overhead camshafts
-
- 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
Definitions
- the invention relates to a designed as a plunger or support switchable valve drive member of an internal combustion engine, with a housing which can be arranged on its outer shell in a guide or receiving the internal combustion engine, which housing is mated with a relatively axially movable inner element contrast, the housing at a height section is cut from at least one receptacle for at least one coupling means, via which coupling means, the inner member is selectively connectable to the housing.
- a valve drive member designed here as a support element, it is apparent from DE 10 2007 002 787 A1. Its piston as coupling means are acted upon at their outer forehead of the ends of a bending spring radially inward.
- the spiral spring is segment-like in an annular groove in the outer casing of the housing of the valve drive member. In a handling of the latter to its mounting on the internal combustion engine, it may happen that the bending spring is contacted undesirable and thus jumps out of the annular groove or comes out of contact with the piston, so that they can fall out of their recording. It is therefore an object of the invention to provide a valve drive member that is safe to trade and assemble.
- this object is achieved in that over a front side of the housing, a protective cap is releasably seated, whose ring leads along the redesignman- tel of the housing at least to over the receptacle for the at least one coupling means.
- the protective cap covers at least a portion of the coupling means.
- the latter are acted upon according to a particularly preferred embodiment of the invention by a bending spring radially inward, which bending spring thus undergoes excellent protection against inadvertent contact via the ring of the cap.
- the protective cap can go over an entire axial extension of the plunger / support element or each end face of the valve drive member is provided with a protective cap. In the case of a design of the valve drive member as a ram this can be designed as a roller or bucket tappets.
- a simple measure of a holder of the protective cap on the outer jacket of the housing is the subject of another subclaim. Accordingly, the cap is releasably held on the housing via snap or Rastiervorsprünge or resilient tongues and is easily removed after mounting the valve drive member from the housing. Possibly. The cap can also be screwed or held by friction on the outer surface of the housing.
- an anti-rotation lock is provided, wherein, for example, an anti-rotation needle or the like protruding from the outer jacket of the housing can be used.
- FIG. 1 - 3 designed as supporting elements Ventiltriebsglieder with protective cap, each rotated by 90 ° to each other;
- FIG. 4 shows a cross section through the support element according to Fig. 3 at the level of the coupling means
- FIG. 5 shows a sectional view of two support elements mounted in the internal combustion engine, the protective caps of which are connected indirectly to one another via a transverse web before reaching their final installation depth.
- FIGS. 1 to 4 Shown in FIGS. 1 to 4 is a switchable valve drive member 1 of an internal combustion engine designed as a ram.
- the plunger 1 has a housing 2, which can be arranged via its outer casing 3 in a receptacle 4 of the internal combustion engine 5 (see also FIG. 5).
- the housing 2 is fitted together with a relatively axially movable inner element 6, which projects beyond its head 28 an upper end face 9 of the housing 2.
- the head 28 serves a one-end storage of a finger lever.
- the housing 2 is cut by two diametrically opposed receptacle 7, in each of which a piston-like Coupling means 8 is seated, via which the inner element 6 is selectively connectable to the housing 2.
- a protective cap 10 is "pulled” over the abovementioned end face 9 of the housing 2, the perforated base of which is penetrated by the inner element 6.
- a ring 1 1 of the protective cap 10 projecting in the housing direction extends beyond the receptacles 7 on the outer jacket 3 of the housing 2.
- the ring 1 1 on its inside a plurality of circumferentially distributed snap projections 17 which are snapped into respectiee recesses on the outer shell 3 of the housing 2.
- a rotation 18 is provided to position the snap projections 17 of the cap 10 to your counterparts on the outer casing 3 of the housing 2.
- a recess 20 extends from a lower end 19 of the ring 11 of the protective cap 10, which recess cooperates with a radial projection 21 designed as a rotation lock pin on the outer casing 3 of the housing 2.
- the protective cap 10 is extended axially away from the valve drive member 1 by a tubular extension 22, via which the support element 1 can be well transported and handled.
- a tubular extension 22 In a bore 24 of the tubular extension 22 extends here on a top end 25 of the inner member 6 with its lower end 26 placed and opposite the tubular extension 22 limited axially movable ejector piece 27.
- a snap ring / locking ring entrainment means 28 is provided.
- FIG. 5 It can be seen in Fig. 5 that two adjacent support elements 1 can be mounted simultaneously.
- a respective ejector piece 27 seated in the bore 24 of the corresponding projection 22 is axially extended upward and connected via a transverse bow 23 to a further ejector piece 27 of a further supporting element 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110080268 DE102011080268A1 (de) | 2011-08-02 | 2011-08-02 | Schaltbares Ventiltriebsglied |
| PCT/EP2012/057761 WO2013017301A1 (de) | 2011-08-02 | 2012-04-27 | Schaltbares ventiltriebsglied |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2739831A1 true EP2739831A1 (de) | 2014-06-11 |
| EP2739831B1 EP2739831B1 (de) | 2015-07-08 |
Family
ID=46017878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12717307.8A Not-in-force EP2739831B1 (de) | 2011-08-02 | 2012-04-27 | Schaltbares ventiltriebsglied |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2739831B1 (de) |
| CN (1) | CN104024584B (de) |
| DE (1) | DE102011080268A1 (de) |
| WO (1) | WO2013017301A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19651914A1 (de) * | 1996-12-13 | 1998-06-18 | Josef Hoffmann | Vorrichtung zum Verhindern von Motor Totalschäden beim gerissenem Zahnriemen oder Steuerkette mit integrierter Ventil-Spiel Ausgleichsautomatik |
| DE19930573A1 (de) * | 1999-07-02 | 2001-01-04 | Schaeffler Waelzlager Ohg | Ventiltrieb einer Brennkraftmaschine |
| US6405699B1 (en) * | 2001-08-09 | 2002-06-18 | Eaton Corporation | Roller follower guide orientation and anti-rotation feature |
| DE102007002787A1 (de) | 2007-01-18 | 2008-07-24 | Schaeffler Kg | Schaltbares Abstützelement für einen Ventiltrieb einer Brennkraftmaschine |
| DE102008059567A1 (de) * | 2007-12-20 | 2009-06-25 | Schaeffler Kg | Schaltbares Bauteil für einen Ventiltrieb einer Brennkraftmaschine |
| JP5137627B2 (ja) * | 2008-03-07 | 2013-02-06 | 株式会社オティックス | ロッカアームユニット及びロッカアームユニットの組立方法 |
-
2011
- 2011-08-02 DE DE201110080268 patent/DE102011080268A1/de not_active Withdrawn
-
2012
- 2012-04-27 EP EP12717307.8A patent/EP2739831B1/de not_active Not-in-force
- 2012-04-27 CN CN201280036641.1A patent/CN104024584B/zh not_active Expired - Fee Related
- 2012-04-27 WO PCT/EP2012/057761 patent/WO2013017301A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013017301A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011080268A1 (de) | 2013-02-07 |
| EP2739831B1 (de) | 2015-07-08 |
| CN104024584B (zh) | 2016-11-02 |
| CN104024584A (zh) | 2014-09-03 |
| WO2013017301A1 (de) | 2013-02-07 |
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