EP1288447A2 - Valve spring assembly, valve spring retainer and method of building a valve spring assembly - Google Patents

Valve spring assembly, valve spring retainer and method of building a valve spring assembly Download PDF

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Publication number
EP1288447A2
EP1288447A2 EP02017051A EP02017051A EP1288447A2 EP 1288447 A2 EP1288447 A2 EP 1288447A2 EP 02017051 A EP02017051 A EP 02017051A EP 02017051 A EP02017051 A EP 02017051A EP 1288447 A2 EP1288447 A2 EP 1288447A2
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EP
European Patent Office
Prior art keywords
valve spring
valve
spring plate
spring assembly
valve stem
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
EP02017051A
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German (de)
French (fr)
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EP1288447B1 (en
EP1288447A3 (en
Inventor
Julie Creissel
Max Paty
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Deere and Co
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Deere and Co
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Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP1288447A2 publication Critical patent/EP1288447A2/en
Publication of EP1288447A3 publication Critical patent/EP1288447A3/en
Application granted granted Critical
Publication of EP1288447B1 publication Critical patent/EP1288447B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/10—Connecting springs to valve members
    • 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
    • F01L2301/00—Using particular materials

Definitions

  • the invention relates to a valve spring assembly with a Valve spring plate, a valve spring and a Securing means, wherein the valve spring plate at least partially formed in the manner of a cuff and the securing agent inside this cuff at least one securing element can be held, a Valve spring plate and a method for assembling a Valve spring assembly.
  • Valve spring plates mounted on a valve stem can be and on which a valve spring is supported.
  • Valve spring plate is replaced by securing means on the Valve stem held, for example, in the manner of Clamp cones or also formed by circlips, etc. could be.
  • DE-A1-44 21 408 shows a valve spring assembly with a cuff-shaped valve spring plate and one acting on an edge region of the valve spring plate Valve spring, which on a shaft of a valve Internal combustion engine can be attached.
  • Valve spring assembly or the valve spring plate on the Set valve stem includes the valve spring assembly Fuse element formed by clamping cone halves becomes.
  • At the valve spring plate are holding lugs or tabs provided that the fuse element in an interior of the Secure valve spring plate against losing.
  • Such a valve spring assembly comprises several components, preferably at least one valve spring plate and a Securing element, in the manner of a pre-assembly unit, wherein the valve spring plate also in the manner of a Valve rotating device (Rotocap) can be executed.
  • these components can be used in a single operation or mounted together on a valve stem and in the same way in turn, be easily removed from this. It is not necessary, for example, first the valve spring plate to put on, then install the fuse element and this following, for example, by a positive or even a positive connection on the valve stem to to back up. Instead, the valve spring assembly on the Valve stem placed and guided along this, until the fuse element a positive / non-positive connection enters with the valve stem.
  • valve stem secured valve spring plate is replaced by a valve spring burdened previously or together with the Valve spring assembly mounted on the valve stem was / will, so he is in the direction of the fuse element moved and through this on the valve stem at least in axial direction can be secured.
  • Valve spring assembly and the valve spring plate to dismantle this can be so against the effect of Valve spring are loaded, that the securing element from the Cuff exits and disassembly, for example, under Use of tools, such as a screwdriver, accessible becomes.
  • the securing means hinge and / or form spring-like, so it depends on his Load can fold to prevent the leakage To allow securing element from the cuff.
  • it is at least partially elastic educated. This can be done easily and inexpensively For example, at least partially elastic plastic or Rubber elements are realized.
  • the securing means can be detachable, for example as a with the valve spring plate jammed or otherwise secured Be provided component.
  • the Securing means to the valve spring plate for example in the Type of elastic sheet, etc. molded or with this undetachably connected, for example glued, welded or similar. is.
  • the securing means can be formed in one piece or in several parts be. Preferably, it is in the nature of one or more provided on the inside of the cuff and inwards protruding lip (s) formed. Such a lip can in particular in an elastic embodiment of the Securing means in a groove, preferably on the inside the cuff be held by a clamp connection.
  • Valve spring plate A simple way of interacting Valve spring plate with the fuse element results when the valve spring retainer has a contact area which coincides with the Can fuse element cooperate such that the Valve spring plate at least at an axial movement (in a Direction) is prevented.
  • the investment area formed by a shoulder for example, by it that can result in a cross-sectional change of the cuff is provided. But it is also a gradual transition or a lead possible.
  • valve spring plate not directly with a valve spring cooperates, but other components arranged between the valve spring and the valve spring plate are. But it is simple in the execution, if the Valve spring plate a support area for the valve spring to Provides. This is preferably in a peripheral area of the valve spring plate is arranged or by such formed as the valve spring usually as a Coil spring is executed, through which a valve stem can extend.
  • valve spring plate means for preferably areawise determination of the valve spring, so is the Valve spring integrated into the valve spring assembly, that they share with this, especially with the Valve spring plate and the securing means to be mounted can.
  • These agents are preferably by at least one in Direction of the valve spring open, hook-like element formed or they have such a, so that the Valve spring or a valve spring plate facing End of the same taken by this and / or with this can be connected in the manner of a clamp connection. But it is also conceivable that a connection through others Fuse elements or even inseparable, for example, by welding, soldering or the like, is provided.
  • the fuse element can be simpler and cheaper Way through a conventional circlip but also by lock washers or snap rings or equivalent Components are formed, which preferably with a can cooperate circumferential groove in the valve stem. But also the use of clamping cones or split clamping cones is possible.
  • valve spring assembly a Valve stem seal, which preferably with the Valve spring plate can cooperate in such a way that they this is releasably fixed. In this way, the Valve stem seal along with the valve spring assembly to be assembled. Then she can from this or the Valve spring plates are separated to be at their operating position to be determined.
  • valve spring plate a recess or a Projection be provided with the valve stem seal can enter a clamp connection. This is to be interpreted that it can be released after the valve stem seal has assumed its operating position on the cylinder head and at this example, by a clamping or frictional connection or otherwise secured.
  • a valve spring plate for use in a described Valve spring assembly can be purchased as a single item and in one Pre-assembly station with the other components to the Valve spring assembly joined together and then together with this as an assembly unit on a valve stem one Internal combustion engine to be mounted.
  • a method of assembling a valve spring assembly is both manual and automated Mounting suitable. Due to the merger of several Components to a valve spring assembly, as a Pre-assembled unit to be brought to the assembly site can, the assembly process can be accelerated or even a Assembly by means of a machine, for example with a Magazine or an automated feeder.
  • FIG. 1 shows a valve stem 10 of a not closer illustrated intake or exhaust valve, which is characterized by a only hinted cylinder head 12 a Internal combustion engine extends. Above the valve stem 10 is a valve spring assembly 14 in from the valve stem 10 disassembled or not attached to the valve stem 10 State shown.
  • the valve spring assembly 14 has a valve spring 16, a Valve stem seal 18, a valve spring plate 20, a in the Type of securing ring executed securing element 22nd and an elastic securing means 24, wherein the Valve spring 16 in the installed state at one end of the Cylinder head 12 and the other end to a bottom 25 of the Valve spring plate 20 comes to the plant.
  • the valve spring plate 20 is designed as a collared, rotationally symmetrical component or as a cuff with an at least approximately circular, central recess 26 executed, which in a valve stem 10 facing Region 28 has a diameter suitable for to allow a sliding receiving the valve stem 10.
  • the recess 26 In its remaining area 30, the recess 26 has a Diameter exceeding this first diameter whereby in a transition region a shoulder or a Bearing surface 27 is formed.
  • the recess 26 expands preferably with progressive distance from the Contact surface 27.
  • An outer edge region 32 of the valve spring plate 20 forms an area over which the valve spring 16 on the Valve spring plate 20 is supported, and is beyond at least partially in the manner of a toward the bottom 25th formed of the valve spring 20 open hook.
  • One End portion 34 of the valve spring 16 can thus by the Edge region 32 are received so that it is in a Clamping seat is held on the valve spring plate 20.
  • valve spring plate 20 at his Bottom 25 a recess 36, which in the manner of a preferably circular countersink is executed.
  • the Recess 36 has a diameter which is such dimensioned is that he has a releasable clamp connection between the recess 36 and the valve stem seal 18th allows.
  • the clamping connection is favored by that the valve stem seal 18 made of an elastic material or an elastic plastic material is formed, which to achieve the desired sealing effect usually is provided.
  • valve stem 10 and the cylinder head 12 are in the usual Carried out manner, wherein the valve stem 10 in an upper, the cylinder head 12 remote area a circumferential groove 38th having.
  • FIGS. 2 to 5 taken in which steps of a method of assembling the previously described valve spring assembly 12 on the Valve stem 10 are shown.
  • Fig. 2 shows the valve spring assembly 14, which on the Valve stem 10 has been placed so that the valve spring 16 at the cylinder head 12 comes to rest, with no further force is exercised.
  • the Securing element 22 which within the sleeve-like Valve plate 20 is disposed above the groove 38th
  • valve spring assembly 14 To the valve spring assembly 14 on the valve stem 10 to mount the valve spring plate 20 according to the Representation in Fig. 3 against the effect of one end the cylinder head 12 supporting valve spring 16 on the Cylinder head 12 to move. This also moves Fuse element 22 down, as it passes through the on him engaging securing means 24 according to the movement of the Valve spring plate 20 is carried.
  • valve spring 16 compressed so that the preferably in the nature of a locking ring or spring ring executed fuse element 22 by the securing means 24th was brought to the groove 38 of the valve stem 10 passes the securing element 22 in a further displacement of the Valve spring plate 20 in the direction of the cylinder head 12 in Engagement with the groove 38.
  • This engagement produces an audible Click, which in particular in a manual assembly of a Operator can indicate that the fuse element 22nd is positioned.
  • a force has to be applied that sufficient to the elastic running securing means 24th to deform such that the securing element 22 to him can pass without disengaging with the groove 38th to be brought.
  • Valve spring 20 This further movement of Valve spring 20 is performed to the Valve stem seal 18 continues towards the cylinder head 12 to move on to an appropriately engineered Area of the cylinder head 12 such a tight clamping seat that it can persist, if after one Release the valve spring 20 this by the effect the valve spring 16 is pushed away from the cylinder head 12, wherein the clamping connection between the valve spring plate 20 and the valve stem seal 18 is released.
  • This position is in Fig. 4 shown.
  • Fig. 5 now shows the position of the valve spring assembly 14 and in this case in particular the valve spring plate 20, the Take fuse element 22 and the valve stem seal 28, when the valve spring plate 20 is released and the Valve spring assembly 14 in its operating position located. If the valve spring plate 20 through the valve spring 16 loaded from the cylinder head 12 away, so will the Securing means 24 again to the securing element 22nd introduced and brought to this plant. By a appropriate dimensioning of the valve spring 16 and the Securing means 24 ensures that the Securing means 24 by the applied spring force such is deformed, that the securing element 22 to him pass by and enter the interior of the cuff can.
  • valve spring 16 takes place as long as another Displacement of the valve spring 20 on the valve stem 10 until the contact area 27 of the valve spring plate 20 on the Securing element 22 comes to rest.
  • the effect of Valve spring 16 can now only in one movement of the Valve stem 10 result, and the valve spring assembly 14th is ready for use.
  • valve spring plate 20 is again against the effect of the valve spring 16 in the direction of the cylinder head 12 moves until the fuse element 22 from the cuff ' exit.
  • the now accessible securing element 22 can in simple way, for example, with the help of a Screwdriver or other suitable tool from the valve stem 10 are removed, after which the Valve spring assembly 14 and in particular the Valve stem seal 18 of the valve stem 10 and the Cylinder head 12 can be removed / removed.
  • valve spring assembly 14 as a preassembled unit all on the valve stem 10th to be mounted components and thus includes a variety of such Units filled in a magazine or by means of a Feeder be brought to a mounting unit can.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Automatic Assembly (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Springs (AREA)
  • Compressor (AREA)
  • Fluid-Damping Devices (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

A locking element (22) is retained by an elastic lock (24) in the interior of a valve spring plate (20), and interacts with the plate to limit axial movement of the plate on the valve stem in one direction. An Independent claim is also included for a method in installing the valve spring assembly to a valve stem.

Description

Die Erfindung betrifft einen Ventilfederzusammenbau mit einem Ventilfederteller, einer Ventilfeder und einem Sicherungsmittel, wobei der Ventilfederteller wenigstens bereichsweise in der Art einer Manschette ausgebildet ist und das Sicherungsmittel im Innern dieser Manschette durch wenigstens ein Sicherungselement gehalten werden kann, einen Ventilfederteller sowie ein Verfahren zur Montage eines Ventilfederzusammenbaus.The invention relates to a valve spring assembly with a Valve spring plate, a valve spring and a Securing means, wherein the valve spring plate at least partially formed in the manner of a cuff and the securing agent inside this cuff at least one securing element can be held, a Valve spring plate and a method for assembling a Valve spring assembly.

Bekannte Ventilfederzusammenbauten weisen einen Ventilfederteller auf, der auf einen Ventilschaft aufgesetzt werden kann und an dem sich eine Ventilfeder abstützt. Der Ventilfederteller wird durch Sicherungsmittel auf dem Ventilschaft gehalten, die beispielsweise in der Art von Klemmkegeln oder auch von Sicherungsringen etc. ausgebildet sein können.Known valve spring assemblies have a Valve spring plate mounted on a valve stem can be and on which a valve spring is supported. Of the Valve spring plate is replaced by securing means on the Valve stem held, for example, in the manner of Clamp cones or also formed by circlips, etc. could be.

Die DE-A1-44 21 408 zeigt einen Ventilfederzusammenbau mit einem manschettenartig ausgebildeten Ventilfederteller und einer an einem Randbereich des Ventilfedertellers angreifenden Ventilfeder, welche auf einem Schaft eines Ventils einer Brennkraftmaschine angebracht werden kann. Um den Ventilfederzusammenbau bzw. den Ventilfederteller auf dem Ventilschaft festzulegen, weist der Ventilfederzusammenbau ein Sicherungselement auf, das durch Klemmkegelhälften gebildet wird. An dem Ventilfederteller sind Haltenasen bzw. -laschen vorgesehen, die das Sicherungselement in einem Innenbereich des Ventilfedertellers gegen ein Verlieren sichern.DE-A1-44 21 408 shows a valve spring assembly with a cuff-shaped valve spring plate and one acting on an edge region of the valve spring plate Valve spring, which on a shaft of a valve Internal combustion engine can be attached. To the Valve spring assembly or the valve spring plate on the Set valve stem, includes the valve spring assembly Fuse element formed by clamping cone halves becomes. At the valve spring plate are holding lugs or tabs provided that the fuse element in an interior of the Secure valve spring plate against losing.

Das der Erfindung zugrunde liegende Problem wird in der aufwendigen Ausführung sowie Montage bekannter Ventilfederzusammenbauten gesehen.The problem underlying the invention is in the elaborate design and mounting known Valve spring assemblies seen.

Dieses Problem wird erfindungsgemäß durch die Lehre der Patentansprüche 1, 13 bzw. 14 gelöst, wobei in den weiteren Patentansprüchen Merkmale aufgeführt sind, die die Lösung in vorteilhafter Weise weiterentwickeln. This problem is inventively achieved by the teaching of the claims 1, 13 and 14, respectively, wherein in the further claims Features are listed that provide the solution in more advantageous Evolve way.

Ein solcher Ventilfederzusammenbau fasst mehrere Bauteile, vorzugsweise wenigstens einen Ventilfederteller und ein Sicherungselement, in der Art einer Vormontageeinheit zusammen, wobei der Ventilfederteller auch in der Art einer Ventildreheinrichtung (Rotocap) ausgeführt sein kann. Auf diese Weise können diese Bauteile in einem einzigen Arbeitsgang bzw. gemeinsam auf einem Ventilschaft montiert und in ebenso einfacher Weise wiederum von diesem entfernt werden. Es ist nicht notwendig, beispielsweise zuerst den Ventilfederteller aufzusetzen, dann das Sicherungselement anzubringen und dieses im Anschluss beispielsweise durch eine formschlüssige oder auch eine kraftschlüssige Verbindung auf dem Ventilschaft zu sichern. Statt dessen wird der Ventilfederzusammenbau auf den Ventilschaft aufgesetzt und an diesem solange entlanggeführt, bis das Sicherungselement eine form-/kraftschlüssige Verbindung mit dem Ventilschaft eingeht. Der nun auf dem Ventilschaft gesicherte Ventilfederteller wird durch eine Ventilfeder belastet, die zuvor oder gemeinsam mit dem Ventilfederzusammenbau auf den Ventilschaft aufgesetzt wurde/wird, so dass er in Richtung des Sicherungselements bewegt und durch dieses auf dem Ventilschaft wenigstens in axialer Richtung gesichert werden kann. Um den Ventilfederzusammenbau bzw. den Ventilfederteller zu demontieren, kann dieser derart gegen die Wirkung der Ventilfeder belastet werden, dass das Sicherungselement aus der Manschette austritt und einer Demontage, beispielsweise unter Einsatz von Werkzeug, wie eines Schraubendrehers, zugänglich wird.Such a valve spring assembly comprises several components, preferably at least one valve spring plate and a Securing element, in the manner of a pre-assembly unit, wherein the valve spring plate also in the manner of a Valve rotating device (Rotocap) can be executed. To this Way these components can be used in a single operation or mounted together on a valve stem and in the same way in turn, be easily removed from this. It is not necessary, for example, first the valve spring plate to put on, then install the fuse element and this following, for example, by a positive or even a positive connection on the valve stem to to back up. Instead, the valve spring assembly on the Valve stem placed and guided along this, until the fuse element a positive / non-positive connection enters with the valve stem. The now on the valve stem secured valve spring plate is replaced by a valve spring burdened previously or together with the Valve spring assembly mounted on the valve stem was / will, so he is in the direction of the fuse element moved and through this on the valve stem at least in axial direction can be secured. To the Valve spring assembly and the valve spring plate to dismantle, this can be so against the effect of Valve spring are loaded, that the securing element from the Cuff exits and disassembly, for example, under Use of tools, such as a screwdriver, accessible becomes.

Es ist denkbar, das Sicherungsmittel scharnier- und/oder federartig auszubilden, so dass es abhängig von seiner Belastung umklappen kann, um ein Austreten des Sicherungselements aus der Manschette zu ermöglichen. Vorzugsweise ist es aber zumindest bereichsweise elastisch ausgebildet. Dies kann einfach und preisgünstig durch beispielsweise wenigstens teilelastische Kunststoff- oder Gummielemente realisiert werden. It is conceivable that the securing means hinge and / or form spring-like, so it depends on his Load can fold to prevent the leakage To allow securing element from the cuff. Preferably, however, it is at least partially elastic educated. This can be done easily and inexpensively For example, at least partially elastic plastic or Rubber elements are realized.

Das Sicherungsmittel kann lösbar, beispielsweise als ein mit dem Ventilfederteller verklemmter oder anderweitig gesicherter Bauteil vorgesehen sein. Ebenso ist es aber denkbar, dass das Sicherungsmittel an den Ventilfederteller beispielsweise in der Art eines elastischen Blechs etc. angeformt oder mit diesem unlösbar verbunden, beispielsweise verklebt, verschweißt o.ä. ist.The securing means can be detachable, for example as a with the valve spring plate jammed or otherwise secured Be provided component. Likewise, it is conceivable that the Securing means to the valve spring plate, for example in the Type of elastic sheet, etc. molded or with this undetachably connected, for example glued, welded or similar. is.

Das Sicherungsmittel kann einteilig oder mehrteilig ausgebildet sein. Vorzugsweise ist es in der Art einer oder auch mehrerer an der Innenseite der Manschette vorgesehener und nach innen ragender Lippe(n) ausgebildet. Eine solche Lippe kann insbesondere bei einer elastischen Ausführung des Sicherungsmittels in einer Nut vorzugsweise an der Innenseite der Manschette durch eine Klemmverbindung gehalten werden.The securing means can be formed in one piece or in several parts be. Preferably, it is in the nature of one or more provided on the inside of the cuff and inwards protruding lip (s) formed. Such a lip can in particular in an elastic embodiment of the Securing means in a groove, preferably on the inside the cuff be held by a clamp connection.

Eine einfache Möglichkeit des Zusammenwirkens des Ventilfedertellers mit dem Sicherungselement ergibt sich, wenn der Ventilfederteller einen Anlagebereich aufweist, der mit dem Sicherungselement derart zusammenwirken kann, dass der Ventilfederteller zumindest an einer axialen Bewegung (in einer Richtung) gehindert wird. Vorzugsweise wird der Anlagebereich durch eine Schulter gebildet, die sich beispielsweise dadurch ergeben kann, dass eine Querschnittsänderung der Manschette vorgesehen ist. Es ist aber auch ein allmählicher Übergang oder ein Vorsprung möglich.A simple way of interacting Valve spring plate with the fuse element results when the valve spring retainer has a contact area which coincides with the Can fuse element cooperate such that the Valve spring plate at least at an axial movement (in a Direction) is prevented. Preferably, the investment area formed by a shoulder, for example, by it that can result in a cross-sectional change of the cuff is provided. But it is also a gradual transition or a lead possible.

Es ist denkbar, dass der Ventilfederteller nicht direkt mit einer Ventilfeder zusammenwirkt, sondern weitere Bauteile zwischen der Ventilfeder und dem Ventilfederteller angeordnet sind. Einfach in der Ausführung ist es aber, wenn der Ventilfederteller einen Abstützbereich für die Ventilfeder zur Verfügung stellt. Dieser ist vorzugsweise in einem Randbereich des Ventilfedertellers angeordnet bzw. wird durch einen solchen gebildet, da die Ventilfeder üblicherweise als eine Schraubenfeder ausgeführt ist, durch die sich ein Ventilschaft erstrecken kann. It is conceivable that the valve spring plate not directly with a valve spring cooperates, but other components arranged between the valve spring and the valve spring plate are. But it is simple in the execution, if the Valve spring plate a support area for the valve spring to Provides. This is preferably in a peripheral area of the valve spring plate is arranged or by such formed as the valve spring usually as a Coil spring is executed, through which a valve stem can extend.

Weist der Ventilfederteller Mittel zur vorzugsweise bereichsweisen Festlegung der Ventilfeder auf, so ist auch die Ventilfeder in den Ventilfederzusammenbau derart integriert, dass sie gemeinsam mit diesem, insbesondere mit dem Ventilfederteller und dem Sicherungsmittel, montiert werden kann.Does the valve spring plate means for preferably areawise determination of the valve spring, so is the Valve spring integrated into the valve spring assembly, that they share with this, especially with the Valve spring plate and the securing means to be mounted can.

Diese Mittel werden vorzugsweise durch wenigstens ein in Richtung der Ventilfeder geöffnetes, hakenartiges Element gebildet bzw. sie weisen ein solches auf, so dass die Ventilfeder bzw. ein dem Ventilfederteller zugewandter Endbereich derselben durch diesen aufgenommen und/oder mit diesem in der Art einer Klemmverbindung verbunden werden kann. Es ist aber auch denkbar, dass eine Verbindung durch andere Sicherungselemente oder auch in unlösbarer Weise, beispielsweise durch ein Verschweißen, Festlöten o.ä., vorgesehen wird.These agents are preferably by at least one in Direction of the valve spring open, hook-like element formed or they have such a, so that the Valve spring or a valve spring plate facing End of the same taken by this and / or with this can be connected in the manner of a clamp connection. But it is also conceivable that a connection through others Fuse elements or even inseparable, for example, by welding, soldering or the like, is provided.

Das Sicherungselement kann in einfacher und kostengünstiger Weise durch einen konventionellen Sicherungsring aber auch durch Sicherungsscheiben oder Sprengringe bzw. entsprechende Bauteile gebildet werden, welche vorzugsweise mit einer umlaufenden Nut in dem Ventilschaft zusammenwirken können. Aber auch die Verwendung von Klemmkegeln bzw. geteilten Klemmkegeln ist möglich.The fuse element can be simpler and cheaper Way through a conventional circlip but also by lock washers or snap rings or equivalent Components are formed, which preferably with a can cooperate circumferential groove in the valve stem. But also the use of clamping cones or split clamping cones is possible.

Darüber hinaus kann der Ventilfederzusammenbau eine Ventilschaftdichtung umfassen, welche vorzugsweise mit dem Ventilfederteller derart zusammenwirken kann, dass sie an diesem lösbar festlegbar ist. Auf diese Weise kann die Ventilschaftdichtung zusammen mit dem Ventilfederzusammenbau montiert werden. Danach kann sie von diesem bzw. dem Ventilfederteller getrennt werden, um an ihrer Betriebsposition festgelegt zu werden.In addition, the valve spring assembly a Valve stem seal, which preferably with the Valve spring plate can cooperate in such a way that they this is releasably fixed. In this way, the Valve stem seal along with the valve spring assembly to be assembled. Then she can from this or the Valve spring plates are separated to be at their operating position to be determined.

Hierzu kann an dem Ventilfederteller eine Aussparung bzw. ein Vorsprung vorgesehen sein, mit dem die Ventilschaftdichtung eine Klemmverbindung eingehen kann. Diese ist so auszulegen, dass sie gelöst werden kann, nachdem die Ventilschaftdichtung ihre Betriebsposition auf dem Zylinderkopf eingenommen hat und an diesem beispielsweise ebenso durch eine Klemm- bzw. reibschlüssige Verbindung oder anderweitig gesichert ist.For this purpose, on the valve spring plate a recess or a Projection be provided with the valve stem seal can enter a clamp connection. This is to be interpreted that it can be released after the valve stem seal has assumed its operating position on the cylinder head and at this example, by a clamping or frictional connection or otherwise secured.

Ein Ventilfederteller zur Verwendung in einem beschriebenen Ventilfederzusammenbau kann als Einzelteil bezogen und in einer Vormontagestation mit den übrigen Bauteilen zu dem Ventilfederzusammenbau zusammengefügt und dann zusammen mit diesem als eine Montageeinheit auf einem Ventilschaft einer Brennkraftmaschine montiert werden.A valve spring plate for use in a described Valve spring assembly can be purchased as a single item and in one Pre-assembly station with the other components to the Valve spring assembly joined together and then together with this as an assembly unit on a valve stem one Internal combustion engine to be mounted.

Ein Verfahren zur Montage eines Ventilfederzusammenbaus ist sowohl zur manuellen als insbesondere zur automatisierten Montage geeignet. Aufgrund der Zusammenführung mehrerer Bauteile zu einem Ventilfederzusammenbau, der als eine vormontierte Einheit an den Montageplatz herangebracht werden kann, kann der Montagevorgang beschleunigt oder auch eine Montage mittels eines Automaten beispielsweise mit einem Magazin oder einer automatisierten Zuführung erfolgen.A method of assembling a valve spring assembly is both manual and automated Mounting suitable. Due to the merger of several Components to a valve spring assembly, as a Pre-assembled unit to be brought to the assembly site can, the assembly process can be accelerated or even a Assembly by means of a machine, for example with a Magazine or an automated feeder.

In der Zeichnung ist ein nachfolgend näher beschriebenes Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

Fig. 1
einen Ventilfederzusammenbau sowie eine sich durch einen nicht genauer dargestellten Zylinderkopf einer Brennkraftmaschine erstreckenden Ventilschaft und
Fig. 2 - Fig. 5
einzelne Schritte einer Montage des Ventilfederzusammenbaus auf dem Ventilschaft.
In the drawing, an embodiment of the invention described in more detail below is shown. It shows:
Fig. 1
a valve spring assembly as well as a not shown by a cylinder head of an internal combustion engine extending valve stem and
Fig. 2 - Fig. 5
individual steps of mounting the valve spring assembly on the valve stem.

Figur 1 zeigt einen Ventilschaft 10 eines nicht näher dargestellten Ein- bzw. Auslassventils, der sich durch einen nur andeutungsweise dargestellten Zylinderkopf 12 einer Brennkraftmaschine erstreckt. Oberhalb des Ventilschafts 10 ist ein Ventilfederzusammenbau 14 in von dem Ventilschaft 10 demontiertem bzw. nicht an dem Ventilschaft 10 angebrachten Zustand dargestellt.FIG. 1 shows a valve stem 10 of a not closer illustrated intake or exhaust valve, which is characterized by a only hinted cylinder head 12 a Internal combustion engine extends. Above the valve stem 10 is a valve spring assembly 14 in from the valve stem 10 disassembled or not attached to the valve stem 10 State shown.

Der Ventilfederzusammenbau 14 weist eine Ventilfeder 16, eine Ventilschaftdichtung 18, einen Ventilfederteller 20, ein in der Art eines Sicherungsrings ausgeführtes Sicherungselement 22 sowie ein elastisches Sicherungsmittel 24 auf, wobei die Ventilfeder 16 in eingebautem Zustand einenends an dem Zylinderkopf 12 und andernends an einer Unterseite 25 des Ventilfedertellers 20 zur Anlage kommt.The valve spring assembly 14 has a valve spring 16, a Valve stem seal 18, a valve spring plate 20, a in the Type of securing ring executed securing element 22nd and an elastic securing means 24, wherein the Valve spring 16 in the installed state at one end of the Cylinder head 12 and the other end to a bottom 25 of the Valve spring plate 20 comes to the plant.

Der Ventilfederteller 20 ist als ein kragenartiger, rotationssymmetrischer Bauteil bzw. als eine Manschette mit einer zumindest annähernd kreisförmigen, zentralen Aussparung 26 ausgeführt, welche in einem dem Ventilschaft 10 zugewandten Bereich 28 einen Durchmesser aufweist, der dazu geeignet ist, eine gleitende Aufnahme des Ventilschafts 10 zu ermöglichen. In ihrem übrigen Bereich 30 weist die Aussparung 26 einen Durchmesser auf, der diesen ersten Durchmesser übersteigt, wodurch in einem Übergangsbereich eine Schulter bzw. eine Anlagefläche 27 gebildet wird. Die Aussparung 26 erweitert sich vorzugsweise mit fortschreitender Entfernung von der Anlagefläche 27.The valve spring plate 20 is designed as a collared, rotationally symmetrical component or as a cuff with an at least approximately circular, central recess 26 executed, which in a valve stem 10 facing Region 28 has a diameter suitable for to allow a sliding receiving the valve stem 10. In its remaining area 30, the recess 26 has a Diameter exceeding this first diameter whereby in a transition region a shoulder or a Bearing surface 27 is formed. The recess 26 expands preferably with progressive distance from the Contact surface 27.

Ein äußerer Randbereich 32 des Ventilfedertellers 20 bildet einen Bereich, über den sich die Ventilfeder 16 an dem Ventilfederteller 20 abstützt, und ist darüber hinaus zumindest abschnittsweise in der Art eines in Richtung der Unterseite 25 des Ventilfedertellers 20 geöffneten Hakens ausgebildet. Ein Endbereich 34 der Ventilfeder 16 kann somit durch den Randbereich 32 derart aufgenommen werden, dass er in einem Klemmsitz an dem Ventilfederteller 20 gehalten wird.An outer edge region 32 of the valve spring plate 20 forms an area over which the valve spring 16 on the Valve spring plate 20 is supported, and is beyond at least partially in the manner of a toward the bottom 25th formed of the valve spring 20 open hook. One End portion 34 of the valve spring 16 can thus by the Edge region 32 are received so that it is in a Clamping seat is held on the valve spring plate 20.

Darüber hinaus weist der Ventilfederteller 20 an seiner Unterseite 25 eine Aussparung 36 auf, die in der Art einer vorzugsweise kreisförmigen Ansenkung ausgeführt ist. Die Aussparung 36 weist einen Durchmesser auf, der derart dimensioniert ist, dass er eine lösbare Klemmverbindung zwischen der Aussparung 36 und der Ventilschaftdichtung 18 ermöglicht. Die Klemmverbindung wird dadurch begünstigt, dass die Ventilschaftdichtung 18 aus einem elastischen Material bzw. einem elastischen Kunststoffmaterial ausgebildet ist, welches zur Erzielung der gewünschten Dichtwirkung üblicherweise vorgesehen wird.In addition, the valve spring plate 20 at his Bottom 25 a recess 36, which in the manner of a preferably circular countersink is executed. The Recess 36 has a diameter which is such dimensioned is that he has a releasable clamp connection between the recess 36 and the valve stem seal 18th allows. The clamping connection is favored by that the valve stem seal 18 made of an elastic material or an elastic plastic material is formed, which to achieve the desired sealing effect usually is provided.

Der Ventilschaft 10 sowie der Zylinderkopf 12 sind in üblicher Weise ausgeführt, wobei der Ventilschaft 10 in einem oberen, dem Zylinderkopf 12 abgewandten Bereich eine umlaufende Nut 38 aufweist.The valve stem 10 and the cylinder head 12 are in the usual Carried out manner, wherein the valve stem 10 in an upper, the cylinder head 12 remote area a circumferential groove 38th having.

Im Folgenden wird nun auch auf die Figuren 2 bis 5 Bezug genommen, in denen Schritte eines Verfahrens zur Montage des zuvor beschriebenen Ventilfederzusammenbaus 12 auf dem Ventilschaft 10 dargestellt werden.In the following, reference will now also be made to FIGS. 2 to 5 taken in which steps of a method of assembling the previously described valve spring assembly 12 on the Valve stem 10 are shown.

Fig. 2 zeigt den Ventilfederzusammenbau 14, welcher auf den Ventilschaft 10 aufgesetzt wurde, so dass die Ventilfeder 16 an dem Zylinderkopf 12 zur Anlage kommt, wobei keine weitere Kraft ausgeübt wird. In dieser ersten Stellung befindet sich das Sicherungselement 22, das innerhalb des manschettenartigen Ventiltellers 20 angeordnet ist, oberhalb der Nut 38.Fig. 2 shows the valve spring assembly 14, which on the Valve stem 10 has been placed so that the valve spring 16 at the cylinder head 12 comes to rest, with no further force is exercised. In this first position is the Securing element 22, which within the sleeve-like Valve plate 20 is disposed above the groove 38th

Um den Ventilfederzusammenbau 14 auf dem Ventilschaft 10 zu montieren, wird der Ventilfederteller 20 entsprechend der Darstellung in Fig. 3 gegen die Wirkung der sich einenends an dem Zylinderkopf 12 abstützenden Ventilfeder 16 auf den Zylinderkopf 12 zu bewegt. Dabei bewegt sich auch das Sicherungselement 22 nach unten, da es durch das an ihm angreifende Sicherungsmittel 24 entsprechend der Bewegung des Ventilfedertellers 20 mitgeführt wird.To the valve spring assembly 14 on the valve stem 10 to mount the valve spring plate 20 according to the Representation in Fig. 3 against the effect of one end the cylinder head 12 supporting valve spring 16 on the Cylinder head 12 to move. This also moves Fuse element 22 down, as it passes through the on him engaging securing means 24 according to the movement of the Valve spring plate 20 is carried.

Ist die Ventilfeder 16 derart komprimiert, dass das vorzugsweise in der Art eines Sicherungsrings bzw. Federrings ausgeführte Sicherungselement 22 durch das Sicherungsmittel 24 an die Nut 38 des Ventilschafts 10 herangebracht wurde, gelangt das Sicherungselement 22 bei einem weiteren Verschieben des Ventilfedertellers 20 in Richtung des Zylinderkopfes 12 in Eingriff mit der Nut 38. Dieses Eingreifen erzeugt ein hörbares Klicken, welches insbesondere bei einer manuellen Montage einer Bedienungsperson anzeigen kann, dass das Sicherungselement 22 in Position gebracht ist. Um den Ventilfederteller 20 weiter zu verschieben, muss nun eine Kraft aufgebracht werden, die ausreicht, um das elastisch ausgeführte Sicherungsmittel 24 derart zu verformen, dass das Sicherungselement 22 an ihm vorbeigelangen kann, ohne außer Eingriff mit der Nut 38 gebracht zu werden. Diese weitere Bewegung des Ventilfedertellers 20 wird ausgeführt, um die Ventilschaftdichtung 18 weiter in Richtung auf den Zylinderkopf 12 zu zu bewegen, damit sie an einem entsprechend ausgeführten Bereich des Zylinderkopfs 12 einen derart festen Klemmsitz eingehen kann, dass dieser bestehen bleibt, wenn nach einem Freigeben des Ventilfedertellers 20 dieser durch die Wirkung der Ventilfeder 16 von dem Zylinderkopf 12 weggedrückt wird, wobei die Klemmverbindung zwischen dem Ventilfederteller 20 und der Ventilschaftdichtung 18 gelöst wird. Diese Stellung ist in Fig. 4 dargestellt.Is the valve spring 16 compressed so that the preferably in the nature of a locking ring or spring ring executed fuse element 22 by the securing means 24th was brought to the groove 38 of the valve stem 10 passes the securing element 22 in a further displacement of the Valve spring plate 20 in the direction of the cylinder head 12 in Engagement with the groove 38. This engagement produces an audible Click, which in particular in a manual assembly of a Operator can indicate that the fuse element 22nd is positioned. To the valve spring plate 20 on Now, a force has to be applied that sufficient to the elastic running securing means 24th to deform such that the securing element 22 to him can pass without disengaging with the groove 38th to be brought. This further movement of Valve spring 20 is performed to the Valve stem seal 18 continues towards the cylinder head 12 to move on to an appropriately engineered Area of the cylinder head 12 such a tight clamping seat that it can persist, if after one Release the valve spring 20 this by the effect the valve spring 16 is pushed away from the cylinder head 12, wherein the clamping connection between the valve spring plate 20 and the valve stem seal 18 is released. This position is in Fig. 4 shown.

Fig. 5 zeigt nun die Stellung, die der Ventilfederzusammenbau 14 und hierbei insbesondere der Ventilfederteller 20, das Sicherungselement 22 und die Ventilschaftdichtung 28 einnehmen, wenn der Ventilfederteller 20 freigegeben ist und der Ventilfederzusammenbau 14 sich in seiner Betriebsstellung befindet. Wird der Ventilfederteller 20 durch die Ventilfeder 16 von dem Zylinderkopf 12 weg belastet, so wird das Sicherungsmittel 24 wieder an das Sicherungselement 22 herangeführt und an diesem zur Anlage gebracht. Durch eine entsprechende Dimensionierung der Ventilfeder 16 und des Sicherungsmittels 24 wird gewährleistet, dass das Sicherungsmittel 24 durch die aufgebrachte Federkraft derart verformt wird, dass das Sicherungselement 22 an ihm vorbeigelangen und in den Innenbereich der Manschette eintreten kann. Durch die Ventilfeder 16 erfolgt solange eine weitere Verschiebung des Ventilfedertellers 20 auf dem Ventilschaft 10 bis der Anlagebereich 27 des Ventilfedertellers 20 an dem Sicherungselement 22 zur Anlage kommt. Die Wirkung der Ventilfeder 16 kann nun nur noch in einer Bewegung des Ventilschafts 10 resultieren, und der Ventilfederzusammenbau 14 ist betriebsbereit.Fig. 5 now shows the position of the valve spring assembly 14 and in this case in particular the valve spring plate 20, the Take fuse element 22 and the valve stem seal 28, when the valve spring plate 20 is released and the Valve spring assembly 14 in its operating position located. If the valve spring plate 20 through the valve spring 16 loaded from the cylinder head 12 away, so will the Securing means 24 again to the securing element 22nd introduced and brought to this plant. By a appropriate dimensioning of the valve spring 16 and the Securing means 24 ensures that the Securing means 24 by the applied spring force such is deformed, that the securing element 22 to him pass by and enter the interior of the cuff can. By the valve spring 16 takes place as long as another Displacement of the valve spring 20 on the valve stem 10 until the contact area 27 of the valve spring plate 20 on the Securing element 22 comes to rest. The effect of Valve spring 16 can now only in one movement of the Valve stem 10 result, and the valve spring assembly 14th is ready for use.

Zur Demontage des Ventilfederzusammenbaus 14 von dem Ventilschaft 10 wird der Ventilfederteller 20 wiederum gegen die Wirkung der Ventilfeder 16 in Richtung des Zylinderkopfes 12 bewegt, bis das Sicherungselement 22 aus der Manschette' austritt. Das nun zugängliche Sicherungselement 22 kann in einfacher Weise beispielsweise unter Zuhilfenahme eines Schraubendrehers oder eines anderen geeigneten Werkzeugs von dem Ventilschaft 10 entfernt werden, wonach der Ventilfederzusammenbau 14 und insbesondere auch die Ventilschaftdichtung 18 von dem Ventilschaft 10 bzw. dem Zylinderkopf 12 abgenommen/entfernt werden können.For disassembly of the valve spring assembly 14 of the Valve stem 10, the valve spring plate 20 is again against the effect of the valve spring 16 in the direction of the cylinder head 12 moves until the fuse element 22 from the cuff ' exit. The now accessible securing element 22 can in simple way, for example, with the help of a Screwdriver or other suitable tool from the valve stem 10 are removed, after which the Valve spring assembly 14 and in particular the Valve stem seal 18 of the valve stem 10 and the Cylinder head 12 can be removed / removed.

Das vorstehend beschriebene Verfahren kann manuell durchgeführt werden. Es ist aber insbesondere für eine automatisierte Montage geeignet, da der Ventilfederzusammenbau 14 als eine vormontierte Einheit alle auf dem Ventilschaft 10 anzubringenden Bauteile umfasst und somit eine Vielzahl solcher Einheiten in ein Magazin gefüllt bzw. mittels einer Zufuhreinrichtung zu einer Montageeinheit herangebracht werden können.The method described above can be performed manually become. But it is especially for an automated Mounting suitable because the valve spring assembly 14 as a preassembled unit all on the valve stem 10th to be mounted components and thus includes a variety of such Units filled in a magazine or by means of a Feeder be brought to a mounting unit can.

Claims (16)

Ventilfederzusammenbau (14) mit einem Ventilfederteller (20) und einem Sicherungselement (22), wobei der Ventilfederteller (20) wenigstens bereichsweise in der Art einer Manschette ausgebildet ist und das Sicherungselement (22) im Innern dieses manschettenartigen Bereichs des Ventilfedertellers (20) durch wenigstens ein Sicherungsmittel (24) gehalten werden kann, dadurch gekennzeichnet, dass das Sicherungselement (22) sowohl aus dem Inneren der Manschette gegen die Wirkung des Sicherungsmittels (24) austreten als auch mit dem Ventilfederteller (20) derart zusammenwirken kann, dass eine axiale Bewegung des Ventilfedertellers (20) auf dem Ventilschaft (10) zumindest in einer Richtung begrenzt wird.Valve spring assembly (14) with a valve spring plate (20) and a securing element (22), wherein the valve spring plate (20) at least partially in the form of a sleeve is formed and the securing element (22) in the interior of this sleeve-like region of the valve spring plate (20) by at least a securing means (24) can be held, characterized in that the securing element (22) both from the interior of the sleeve escape against the action of the securing means (24) and with the valve spring plate (20) cooperate such that an axial movement of the Valve spring plate (20) on the valve stem (10) is limited in at least one direction. Ventilfederzusammenbau nach Anspruch 1, dadurch gekennzeichnet, dass das Sicherungsmittel (24) zumindest bereichsweise elastisch ausgebildet ist.Valve spring assembly according to claim 1, characterized in that the securing means (24) is at least partially elastic. Ventilfederzusammenbau nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Sicherungsmittel (24) mit dem Ventilfederteller (20) lösbar oder unlösbar verbunden oder an diesen angeformt ist.Valve spring assembly according to claim 1 or 2, characterized in that the securing means (24) with the valve spring plate (20) releasably or non-detachably connected or formed on this. Ventilfederzusammenbau nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Sicherungsmittel (24) einteilig oder mehrteilig, vorzugsweise in der Art einer/mehrerer an der Innenseite der Manschette vorgesehenen und nach innen ragenden Lippe(n) ausgebildet ist. Valve spring assembly according to one or more of the preceding claims, characterized in that the securing means (24) is formed in one or more parts, preferably in the manner of one or more provided on the inside of the sleeve and inwardly projecting lip (s). Ventilfederzusammenbau nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Ventilfederteller (20) im Innern der Manschette einen Anlagebereich (27) bildet, der mit dem Sicherungselement (22) zusammenwirken kann.Valve spring assembly according to one or more of the preceding claims, characterized in that the valve spring plate (20) forms a contact region (27) in the interior of the sleeve, which can cooperate with the securing element (22). Ventilfederzusammenbau nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Ventilfederteller (20) derart ausgebildet ist, dass er einen Abstützbereich für eine Ventilfeder (16) zur Verfügung stellt, wobei dieser Abstützbereich vorzugsweise in einem Randbereich des Ventilfedertellers (20) angeordnet ist bzw. durch einen solchen gebildet wird.Valve spring assembly according to one or more of the preceding claims, characterized in that the valve spring plate (20) is designed such that it provides a support region for a valve spring (16), wherein this support region is preferably arranged in an edge region of the valve spring plate (20) or is formed by such. Ventilfederzusammenbau nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Ventilfederteller (20) Mittel zur vorzugsweise bereichsweisen Aufnahme der Ventilfeder (16) aufweist.Valve spring assembly according to one or more of the preceding claims, characterized in that the valve spring plate (20) has means for receiving the valve spring (16), preferably in regions. Ventilfederzusammenbau nach . Anspruch 7, dadurch gekennzeichnet, dass die Mittel in dem Abstützbereich des Ventilfedertellers (20) bzw. an diesen angrenzend angeordnet sind.Valve spring assembly according to. Claim 7, characterized in that the means in the support region of the valve spring plate (20) or are arranged adjacent thereto. Ventilfederzusammenbau nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Mittel durch wenigstens ein in Richtung der Ventilfeder (16) geöffnetes hakenartiges Element gebildet werden. In that the means are formed by at least one open in the direction of the valve spring (16) hook-like element A valve spring assembly according to one or more of the preceding claims, characterized. Ventilfederzusammenbau nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Sicherungselement (22) in der Art eines Sicherungsrings ausgebildet ist und/oder einer vorzugsweise umlaufenden Nut (38) in dem Ventilschaft (10) zusammenwirken kann. Valve spring assembly according to one or more of the preceding claims, characterized in that the securing element (22) is designed in the manner of a securing ring and / or a preferably circumferential groove (38) in the valve stem (10) can cooperate. Ventilfederzusammenbau nach einem oder mehreren der vorherigen Ansprüche, gekennzeichnet durch eine Ventilschaftdichtung (18), die vorzugsweise mit dem Ventilfederteller (20) derart zusammenwirken kann, dass sie an diesem lösbar gehalten werden kann.Valve spring assembly according to one or more of the preceding claims, characterized by a valve stem seal (18), which can preferably interact with the valve spring plate (20) such that it can be held detachably thereto. Ventilfederzusammenbau nach Anspruch 11, dadurch gekennzeichnet, dass der Ventilfederteller (20) an einer Unterseite eine Aussparung bzw. einen Vorsprung aufweist, mit dem die Ventilschaftdichtung (18) eine Klemmverbindung eingehen kann.Valve spring assembly according to claim 11, characterized in that the valve spring plate (20) on an underside has a recess or a projection, with which the valve stem seal (18) can enter into a clamping connection. Ventilfederteller (20) ausgebildet zur Verwendung in einem Ventilfederzusammenbau (14) nach einem oder mehreren der vorherigen Ansprüche.Valve spring plate (20) designed for use in a Valve spring assembly (14) according to one or more of previous claims. Verfahren zur Montage eines Ventilfederzusammenbaus (14) nach einem oder mehreren der vorherigen Ansprüche auf einem Ventilschaft (10), dadurch gekennzeichnet, dass der Ventilfederzusammenbau (14) auf den Ventilschaft (10) derart aufgesetzt wird, dass sich der Ventilschaft (10) durch die Ventilfeder (16) und den Ventilfederteller (20) hindurch erstreckt, der Ventilfederteller (16) entlang des Ventilschafts (10) gegen die Wirkung der Ventilfeder (16) verschoben wird, bis das Sicherungselement (22) eine Stellung einnimmt, in der es direkt bzw. indirekt auf dem Ventilschaft (10) festgelegt ist, und das Sicherungselement (22) durch ein weiteres Verschieben des Ventilfedertellers (20) gegen die Wirkung des Sicherungselements (24) aus dem Inneren der Manschette austreten kann.Method for assembling a valve spring assembly (14) according to one or more of the preceding claims on a valve stem (10), characterized in that the valve spring assembly (14) is placed on the valve stem (10) such that the valve stem (10) passes through the valve stem (10) Valve spring (16) and the valve spring plate (20) extends through, the valve spring plate (16) along the valve stem (10) against the action of the valve spring (16) is moved until the securing element (22) assumes a position in which it directly or is indirectly fixed on the valve stem (10), and the securing element (22) by another displacement of the valve spring plate (20) against the action of the securing element (24) can escape from the interior of the sleeve. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass an dem Ventilfederteller (20) eine Ventilschaftdichtung (218), vorzugsweise mittels einer Klemmverbindung, angreift, welche bei einem Verschieben des Ventilfedertellers (20) entlang des Ventilschafts (10) mit einem entsprechend ausgebildeten Bereich eines Zylinderkopfes (12) derart zusammenwirken kann, dass sie an diesem vorzugsweise durch eine kraftschlüssige Verbindung gehalten und von dem Ventilfederteller (20) gelöst wird, so dass sie eine Durchtrittsöffnung des Ventilschafts (10) durch den Zylinderkopf (12) dichtet.A method according to claim 14, characterized in that on the valve spring plate (20) a valve stem seal (218), preferably by means of a clamping connection engages, which in a displacement of the valve spring plate (20) along the valve stem (10) with a correspondingly formed portion of a cylinder head (12) can cooperate such that it is held on this preferably by a frictional connection and released from the valve spring plate (20) so that it seals a passage opening of the valve stem (10) through the cylinder head (12). Verfahren nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass das Verfahren zumindest teilweise automatisiert abläuft.A method according to claim 14 or 15, characterized in that the method is at least partially automated.
EP02017051A 2001-08-25 2002-07-27 Valve spring assembly, valve spring retainer and method of building a valve spring assembly Expired - Lifetime EP1288447B1 (en)

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Also Published As

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BR0203851A (en) 2003-05-20
EP1288447B1 (en) 2006-04-26
MXPA02008202A (en) 2005-09-08
JP2003074316A (en) 2003-03-12
US6811143B2 (en) 2004-11-02
CN1407212A (en) 2003-04-02
DE10141782A1 (en) 2003-03-06
EP1288447A3 (en) 2003-08-27
DE50206535D1 (en) 2006-06-01
US20030038269A1 (en) 2003-02-27
ATE324515T1 (en) 2006-05-15

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