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EP2861862A1 - Plunger - Google Patents

Plunger

Info

Publication number
EP2861862A1
EP2861862A1 EP13715999.2A EP13715999A EP2861862A1 EP 2861862 A1 EP2861862 A1 EP 2861862A1 EP 13715999 A EP13715999 A EP 13715999A EP 2861862 A1 EP2861862 A1 EP 2861862A1
Authority
EP
European Patent Office
Prior art keywords
housing
roller
plunger
annular end
inner shell
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
EP13715999.2A
Other languages
German (de)
French (fr)
Other versions
EP2861862B1 (en
Inventor
Stefan Dorn
Norbert Geyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to PL13715999T priority Critical patent/PL2861862T3/en
Publication of EP2861862A1 publication Critical patent/EP2861862A1/en
Application granted granted Critical
Publication of EP2861862B1 publication Critical patent/EP2861862B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • 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
    • F01L1/146—Push-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0408—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • 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
    • 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
    • F01L2303/00—Manufacturing of components used in valve 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
    • F01L2305/00—Valve arrangements comprising rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations

Definitions

  • the invention relates to a tappet, in particular for a pump or a compressor, with a tube-like housing which receives in the region of a first annular end a role for a start of a periodic Huber Wegers within its inner shell, which role one or more parts of their front ends projecting stub axle has, over which it sits in receptacles of the housing, wherein the housing is penetrated axially below the roller of a bridge piece whose second annular end of the housing-facing underside at least indirectly acts as an abutment for a ram follower part.
  • a plunger is apparent from DE 10 2010 022 318 A1. It finds application in a highly loaded fuel injection pump of a quality or quantity controlled internal combustion engine.
  • this object is achieved in that the inner casing of the housing, starting from the first in the direction of the second annular end and at least in an outer shell of the roll comprising respective peripheral portion, a slightly below half the height of the roll expiring, pocket-like material dilution has, in or to which the role protrudes with its ring edges.
  • the roller preferably sits as far as possible immersed within the upper edge of the housing, which makes a contribution towards compact design. Possibly. their recordings can also be on from the first annular end upstanding projections. As recordings come holes or U-like, upwardly open pockets in question.
  • a circulation ring material dilution housing on the inner shell is only two-tiered and thus has a simple design.
  • the outer jacket of the housing is proposed largely unadulterated, so that there is a good guide length for this in its recording. Possibly.
  • the inner shell can also be more than two steps immanent.
  • the Achsstümpfe which carry the role in the housing to be connected in one or more parts with the role.
  • the axle stumps are thus part of a bolt on which the roller, for example. Rotatable via a needle bearing.
  • the stub axles would thus rotate with respect to their housing-side recordings, which may possibly also needle bearings are used.
  • the proposed tappet is intended to be used in or for a fuel injection pump of a quality or quantity controlled internal combustion engine. Equally suitable is a use in a valve train of an internal combustion engine or in an axial or radial piston compressor or a reactive pump.
  • Figure 1 shows a longitudinal section of the plunger
  • FIG. 2 shows a longitudinal section rotated by 90 ° with respect to FIG. 1;
  • ⁇ Figure 3 shows a plan view of the plunger and
  • FIG. 4 shows the detail "Z" according to FIG. 3.
  • the plunger 1 Shown is a plunger 1, here for a high-pressure pump for diesel fuel of an internal combustion engine.
  • the plunger 1 has a tube-like housing 2, which receives in the region of a first upper annular end 3 a roller 4 for a start of a lifting cam within its inner shell 5.
  • the housing 2 which is deep-drawn here from sheet steel, projects through a separate bridge piece 9. This is in the form of a stamped plate, whose second, lower annular end 10 of the housing 2 facing bottom 1 1 acts as a plant for a pump piston.
  • roller 4 extends over a roller bearing 20 on a bolt 17.
  • the latter is added to each end, which is referred to here as stub axle 7, in a part-cylindrical receptacle 8 formed as a flat, each indented portion 18 of the housing 2.
  • the inner shell 5 of the housing 2 has a pocket-like material thinning 14. This is based on the first in the direction of the second annular end 3, 10, so that the inner shell 5 of the housing 2 in its upper region describes a larger circle than in the lower area.
  • the material dilution 14 ends below half the height of the roller 4. By this simple measure, it is possible to obstruct a larger and thus more resilient role 4, without increasing the housing diameter itself.
  • the roller 4 projects with its annular edges 15 in the region of the material dilution 14 of the inner shell 5, which from Figure 3 i. V. with Figure 4 is well removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention relates to a plunger (1) for a fuel injection pump, having a tube-like housing (2), which accommodates a roller (4) for the running of a periodic lift generator inside the inner jacket (5) thereof in the region of a first ring end (3). Said roller has axial stumps (7) projecting from the end faces (6) of the roller, by means of which stumps the roller sits in recesses (8) in the housing (2), wherein the housing (2) is penetrated axially by a bridge piece (9) underneath the roller (4), the underside (11) of which bridge piece, which faces a second ring end (10) of the housing (2), acts as a rest for a plunger following part. The inner jacket (5) of the housing (2), proceeding from the first ring end thereof in the direction of the second rind end (3, 10) and at least in the circumferential section (13) thereof, which surrounds an outer jacket (12) of the roller (4), has a pocket-like thinned portion of material (14), which levels out under a half of the height of the roller (4) and into which the ring edges (15) of the roller (4) project.

Description

Stößel Die Erfindung betrifft einen Stößel, insbesondere für eine Pumpe oder einen Verdichter, mit einem rohrähnlichen Gehäuse, das im Bereich einer ersten Ringstirn eine Rolle für einen Anlauf eines periodischen Huberzeugers innerhalb seines Innenmantels aufnimmt, welche Rolle ein- oder mehrteilig von ihren Stirnseiten abragende Achsstümpfe hat, über welche sie in Aufnahmen des Gehäuses sitzt, wobei das Gehäuse axial unterhalb der Rolle von einem Brückenstück durchragt ist, dessen einer zweiten Ringstirn des Gehäuses zugewandte Unterseite zumindest mittelbar als Anlage für ein Stößelfolgeteil fungiert. Ein derartiger Stößel geht aus der DE 10 2010 022 318 A1 hervor. Er findet Anwendung in einer hochbelasteten Kraftstoffeinspritzpumpe einer qualitäts- oder quantitätsgesteuerten Brennkraftmaschine.  The invention relates to a tappet, in particular for a pump or a compressor, with a tube-like housing which receives in the region of a first annular end a role for a start of a periodic Huberzeugers within its inner shell, which role one or more parts of their front ends projecting stub axle has, over which it sits in receptacles of the housing, wherein the housing is penetrated axially below the roller of a bridge piece whose second annular end of the housing-facing underside at least indirectly acts as an abutment for a ram follower part. Such a plunger is apparent from DE 10 2010 022 318 A1. It finds application in a highly loaded fuel injection pump of a quality or quantity controlled internal combustion engine.
Zunehmende Tragfähigkeitsanforderungen der Stößel, hervorgerufen bspw. durch Drehzahl- und Einspritzdrucksteigerungen, erfordern deren robustere Auslegung, welcher jedoch Bauraumgrenzen entgegenstehen. So ist zu erkennen, dass eine vergleichsweise kleine Rolle mit einer somit nur begrenzten Belastbarkeit verbaut ist. Bei einer Vergrößerung eines Radius der Rolle würde diese einfach gesagt mit ihren zwei Ringkanten am Innenmantel des Gehäuses anlaufen. Bei einer Erhöhung eines Radius des Stößels zur Unterbringung der vergrößerten Rolle müsste zwangsläufig dessen pumpenseitige Führung vergrößert werden, was enorme Änderungen an bereits fertigen Pumpendesigns zur Folge hätte. Es ist Aufgabe der Erfindung, einen Stößel zu schaffen, der bei kompakten Abmessungen stärker belastbar ist. Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass der Innenmantel des Gehäuses, ausgehend von dessen erster in Richtung zur zweiten Ringstirn sowie zumindest in dessen einen Außenmantel der Rolle umfassenden jeweiligen Umfangsabschnitt, eine geringfügig unterhalb einer halben Höhe der Rolle auslaufende, taschenartige Materialverdünnung hat, in oder an welche die Rolle mit ihren Ringkanten ragt. Increasing load capacity requirements of the plunger caused, for example, by speed and injection pressure increases, require their more robust design, which, however, conflict with space limits. Thus it can be seen that a comparatively small role with a thus limited load capacity is installed. At a magnification of a radius of the role this would simply put on with their two ring edges on the inner casing of the housing. With an increase in a radius of the plunger to accommodate the enlarged role would inevitably be pump-side leadership increased, which would have enormous changes to already completed pump designs result. It is an object of the invention to provide a plunger that is more resilient in compact dimensions. According to the invention, this object is achieved in that the inner casing of the housing, starting from the first in the direction of the second annular end and at least in an outer shell of the roll comprising respective peripheral portion, a slightly below half the height of the roll expiring, pocket-like material dilution has, in or to which the role protrudes with its ring edges.
Hierdurch liegt ein höher belastbarer Stößel vor, der kompakt wie bisher baut und dessen Gewicht wegen der nunmehr vergrößerten Rolle nur maximal ge- ringfügig gegenüber dem vorbekannten Stößel erhöht ist. Es gelingt somit, ohne den Durchmesser des Gehäuses zu erhöhen oder ohne dessen Wandung bedeutend zu schwächen, größere und somit belastbarere Rollen mit besseren Tragzahlen für den Nocken- oder Exzenteranlauf zu verwenden. Gegenüber dem eingangs zitierten Stand der Technik liegt nunmehr der verdünnte Bereich des Innenmantels des Gehäuses im oberen Abschnitt vor, letztlich kopfüber zum vorbekannten Design. As a result, there is a higher loadable ram, the compact builds as before and its weight is increased only slightly compared to the prior art ram because of the now enlarged role. It is thus possible, without increasing the diameter of the housing or weaken significantly without the wall to use larger and thus more resilient roles with better load ratings for the cam or eccentric. Compared to the cited prior art now is the dilute region of the inner shell of the housing in the upper section before, ultimately upside down to the prior art design.
Die Rolle sitzt bevorzugt weitestgehend eingetaucht innerhalb des oberen Ran- des des Gehäuses, was einen Beitrag in Richtung Kompaktbau leistet. Ggf. können deren Aufnahmen auch an von der ersten Ringstirn nach oben abstehenden Ansätzen liegen. Als Aufnahmen kommen Bohrungen oder U-ähnliche, nach oben offene Taschen infrage. Zwar ist es generell denkbar und vorgesehen, das Material des Innenmantels des Hemdes nur in dem Umfangsbereich freizustellen, welcher einem Außenmantel der Rolle gegenüber liegt, so dass ein verbleibender Innenmantelabschnitt letztlich glattwandig gemeinsam mit dem unteren Innenmantelabschnitt ist. Fertigungstechnisch zweckmäßiger ist es jedoch, die Materialfreistellung als umlaufenden Ring darzustellen, so dass das Gehäuse einfach tiefgezogen oder fließgepresst werden kann. Alternativ zu den letztgenannten Maßnahmen kommen auch ein spanender Prozess oder eine MIM-Darstellung infrage. Durch die als Umlaufring vorgeschlagene Materialverdünnung ist das Gehäuse am Innenmantel lediglich zweigestuft und hat somit eine simple Gestaltung. Der Außenmantel des Gehäuses ist vorschlagsgemäß weitestgehend glatt- wandig ungestuft, so dass sich eine gute Führungslänge für dieses in dessen Aufnahme ergibt. Ggf. können dem Innenmantel auch mehr als zwei Stufen immanent sein. The roller preferably sits as far as possible immersed within the upper edge of the housing, which makes a contribution towards compact design. Possibly. their recordings can also be on from the first annular end upstanding projections. As recordings come holes or U-like, upwardly open pockets in question. Although it is generally conceivable and intended to release the material of the inner jacket of the shirt only in the peripheral region, which is an outer shell of the roller opposite, so that a remaining inner shell portion is ultimately smooth-walled together with the lower inner shell portion. However, it is more expedient in terms of production technology to represent the material release as a circumferential ring, so that the housing can simply be deep-drawn or extruded. As an alternative to the latter measures, a machining process or an MIM representation are also possible. By proposed as a circulation ring material dilution housing on the inner shell is only two-tiered and thus has a simple design. The outer jacket of the housing is proposed largely unadulterated, so that there is a good guide length for this in its recording. Possibly. The inner shell can also be more than two steps immanent.
Gemäß einer weiteren Fortbildung der Erfindung sollen die Achsstümpfe, welche die Rolle im Gehäuse tragen, entweder ein- oder mehrteilig mit der Rolle verbunden sein. Bei der mehrteiligen, bevorzugten Lösung sind die Achsstümpfe somit Bestandteil eines Bolzens, auf welchem die Rolle bspw. über eine Nadellagerung drehbar verläuft. Bei der mehrteiligen Variante würden die Achsstümpfe somit gegenüber ihren gehäuseseitigen Aufnahmen rotieren, worin ggf. auch Nadellagerungen eingesetzt sein können. According to a further development of the invention, the Achsstümpfe, which carry the role in the housing to be connected in one or more parts with the role. In the multipart, preferred solution, the axle stumps are thus part of a bolt on which the roller, for example. Rotatable via a needle bearing. In the multi-part variant, the stub axles would thus rotate with respect to their housing-side recordings, which may possibly also needle bearings are used.
Der vorschlagsgemäße Stößel soll in oder für eine Kraftstoffeinspritzpumpe einer qualitäts- oder quantitätsgesteuerten Brennkraftmaschine Verwendung finden. Gleichermaßen kommt ein Einsatz in einem Ventiltrieb einer Brennkraftmaschine oder in einem Axial- oder Radialkolbenverdichter oder einer re- spektiven -pumpe infrage. The proposed tappet is intended to be used in or for a fuel injection pump of a quality or quantity controlled internal combustion engine. Equally suitable is a use in a valve train of an internal combustion engine or in an axial or radial piston compressor or a reactive pump.
Die Erfindung geht aus der Zeichnung hervor: The invention is evident from the drawing:
• Figur 1 zeigt einen Längsschnitt des Stößels;  • Figure 1 shows a longitudinal section of the plunger;
• Figur2 zeigt einen gegenüber Figur 1 um 90° gedrehten Längsschnitt; · Figur 3 zeigt eine Draufsicht auf den Stößel und  FIG. 2 shows a longitudinal section rotated by 90 ° with respect to FIG. 1; · Figure 3 shows a plan view of the plunger and
• Figur 4 zeigt die Einzelheit„Z" nach Figur 3.  FIG. 4 shows the detail "Z" according to FIG. 3.
Dargestellt ist ein Stößel 1 , hier für eine Hochdruckpumpe für Dieselkraftstoff einer Brennkraftmaschine. Der Stößel 1 hat ein rohrähnliches Gehäuse 2, das im Bereich einer ersten, oberen Ringstirn 3 eine Rolle 4 für einen Anlauf eines Hubnockens innerhalb seines Innenmantels 5 aufnimmt. Axial unterhalb der Rolle 4 ist das hier aus Stahlblech tiefgezogene Gehäuse 2 von einem separaten Brückenstück 9 durchragt. Dieses liegt als gestanzte Platte vor, dessen einer zweiten, unteren Ringstirn 10 des Gehäuses 2 zugewandte Unterseite 1 1 als Anlage für einen Pumpenkolben fungiert. Shown is a plunger 1, here for a high-pressure pump for diesel fuel of an internal combustion engine. The plunger 1 has a tube-like housing 2, which receives in the region of a first upper annular end 3 a roller 4 for a start of a lifting cam within its inner shell 5. Axially below the roller 4, the housing 2, which is deep-drawn here from sheet steel, projects through a separate bridge piece 9. This is in the form of a stamped plate, whose second, lower annular end 10 of the housing 2 facing bottom 1 1 acts as a plant for a pump piston.
Wie dargestellt, verläuft die Rolle 4 über eine Wälzlagerung 20 auf einem Bolzen 17. Letztgenannter ist mit jedem Ende, das hier als Achsstumpf 7 bezeichnet ist, in einer teilzylindrischen Aufnahme 8 eines als Flach ausgebildeten, jeweils eingerückten Bereichs 18 des Gehäuses 2 aufgenommen. As shown, the roller 4 extends over a roller bearing 20 on a bolt 17. The latter is added to each end, which is referred to here as stub axle 7, in a part-cylindrical receptacle 8 formed as a flat, each indented portion 18 of the housing 2.
Der Innenmantel 5 des Gehäuses 2 hat eine taschenartige Materialverdünnung 14. Diese geht von dessen erster in Richtung zur zweiten Ringstirn 3, 10 aus, so dass der Innenmantel 5 des Gehäuses 2 in seinem oberen Bereich einen größeren Kreis als im unteren Bereich beschreibt. Die Materialverdünnung 14 endet unterhalb einer halben Höhe der Rolle 4. Durch diese simple Maßnahme gelingt es, eine größere und somit belastbarere Rolle 4 zu verbauen, ohne den Gehäusedurchmesser selbst zu vergrößern. Die Rolle 4 ragt mit ihren Ringkanten 15 in den Bereich der Materialverdünnung 14 des Innenmantels 5, was aus Figur 3 i. V. mit Figur 4 gut entnehmbar ist. The inner shell 5 of the housing 2 has a pocket-like material thinning 14. This is based on the first in the direction of the second annular end 3, 10, so that the inner shell 5 of the housing 2 in its upper region describes a larger circle than in the lower area. The material dilution 14 ends below half the height of the roller 4. By this simple measure, it is possible to obstruct a larger and thus more resilient role 4, without increasing the housing diameter itself. The roller 4 projects with its annular edges 15 in the region of the material dilution 14 of the inner shell 5, which from Figure 3 i. V. with Figure 4 is well removed.
Liste der Bezugszahlen ) StößelList of reference numbers) Plunger
) Gehäuse) Casing
) erste Ringstirn) first ring front
) Rolle) Role
) Innenmantel) Inner jacket
) Stirnseite) Front side
) Achsstumpf) Stub axle
) Aufnahme) Admission
) Brückenstück) Bridge piece
0) zweite Ringstirn 0) second ring front
1 ) Unterseite1) bottom
2) Außenmantel Rolle 2) outer sheath roll
3) Umfangsabschnitt 3) peripheral portion
4) Materialverdünnung4) material dilution
5) Ringkante5) Ring edge
6) Außenmantel Gehäuse6) outer casing housing
7) Bolzen7) bolts
8) Bereich8) area
9) lnnenmantelring9) inner jacket ring
0) Wälzlagerung 0) Rolling bearing

Claims

Patentansprüche claims
1 . Stößel (1 ), insbesondere für eine Pumpe oder einen Verdichter, mit einem rohrähnlichen Gehäuse (2), das im Bereich einer ersten Ringstirn (3) eine Rolle (4) für einen Anlauf eines periodischen Huberzeugers innerhalb seines Innenmantels (5) aufnimmt, welche Rolle ein- oder mehrteilig von ihren Stirnseiten (6) abragende Achsstümpfe (7) hat, über welche sie in Aufnahmen (8) des Gehäuses (2) sitzt, wobei das Gehäuse (2) axial unterhalb der Rolle (4) von einem Brückenstück (9) durchragt ist, dessen einer zweiten Ringstirn (10) des Gehäuses (2) zugewandte Unterseite (1 1 ) zumindest mittelbar als Anlage für ein Stößelfolgeteil fungiert, dadurch gekennzeichnet, dass der Innenmantel (5) des Gehäuses (2), ausgehend von dessen erster in Richtung zur zweiten Ringstirn (3, 10) sowie zumindest in dessen einen Außenmantel (12) der Rolle (4) umfassenden jeweiligen Umfangsabschnitt (13), eine geringfügig unterhalb einer halben Höhe der Rolle (4) auslaufende, taschenartige Materialverdünnung (14) hat, in oder an welche die Rolle (4) mit ihren Ringkanten (15) ragt. 1 . Plunger (1), in particular for a pump or a compressor, with a tube-like housing (2) which receives in the region of a first annular end (3) a roller (4) for starting a periodical Huberzeugers within its inner shell (5), which Roller one or more parts of their end faces (6) projecting Achsstümpfe (7) over which it sits in receptacles (8) of the housing (2), wherein the housing (2) axially below the roller (4) of a bridge piece ( 9), whose second end face (10) of the housing (2) facing underside (1 1) at least indirectly acts as a plant for a follower part, characterized in that the inner shell (5) of the housing (2), starting from the first in the direction of the second annular end (3, 10) and at least in an outer shell (12) of the roller (4) comprising respective peripheral portion (13), a slightly below half the height of the roller (4) expiring, pocket-like material has dilution (14), in or on which the roller (4) with its annular edges (15) protrudes.
2. Stößel nach Anspruch 1 , dadurch gekennzeichnet, dass die taschenartige Materialverdünnung (14) als umlaufender Ring vorliegt. 2. plunger according to claim 1, characterized in that the pocket-like material dilution (14) is present as a circumferential ring.
3. Stößel nach Anspruch 2, dadurch gekennzeichnet, dass der Innenmantel (5) des Gehäuses (2) lediglich zweigestuft ist, bestehend aus der Materialverdünnung (14) bei der ersten Ringstirn (3) und einem verbleibenden Innenmantelring (19) bei der zweiten Ringstirn (10), wobei ein Außenmantel (16) des Gehäuses (2) zumindest weitestgehend unge- stuft-glattwandig vorliegt. 3. plunger according to claim 2, characterized in that the inner casing (5) of the housing (2) is merely divided into two, consisting of the material dilution (14) at the first annular end (3) and a remaining inner shell ring (19) at the second annular end (10), wherein an outer jacket (16) of the housing (2) is present at least largely untufted smooth-walled.
4. Stößel nach Anspruch 1 , dadurch gekennzeichnet, dass die Achsstumpfe (7) entweder einteiliger Bestandteil der Rolle (4) sind oder als Endstücke eines separaten Bolzens (17) vorliegen, auf welchem die Rolle (4) gleit- oder wälzgelagert verläuft. 4. Tappet according to claim 1, characterized in that the Achsstumpfe (7) either one-piece part of the roller (4) or as end pieces of a separate bolt (17) are present, on which the roller (4) slidably or roller bearings.
5. Stößel nach Anspruch 1 oder 4, dadurch gekennzeichnet, dass die Aufnahmen (8) des Gehäuses (2) für die Achsstümpfe (7) als Bohrungen oder in Richtung zur ersten Ringstirn (3) offene Taschen vorliegen, wobei jede Aufnahme (8) in einem als Flach ausgebildeten, eingerückten Bereich (18) des Gehäuses (2) liegt. 5. plunger according to claim 1 or 4, characterized in that the receptacles (8) of the housing (2) for the Achsstümpfe (7) as holes or in the direction of the first annular end (3) open pockets, wherein each receptacle (8) in a trained as a flat, indented region (18) of the housing (2).
6. Stößel nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Materialverdünnung (14) spanlos in das Gehäuse (2) geformt ist. 6. plunger according to claim 1 or 2, characterized in that the material dilution (14) is formed without cutting in the housing (2).
7. Stößel nach Anspruch 1 , dadurch gekennzeichnet, dass das Gehäuse (2) spanlos durch Fließpressen oder Tiefziehen dargestellt ist. 7. plunger according to claim 1, characterized in that the housing (2) is shown without cutting by extrusion or deep drawing.
EP13715999.2A 2012-06-18 2013-04-15 Plunger Active EP2861862B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13715999T PL2861862T3 (en) 2012-06-18 2013-04-15 Plunger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012210176A DE102012210176A1 (en) 2012-06-18 2012-06-18 tappet
PCT/EP2013/057820 WO2013189623A1 (en) 2012-06-18 2013-04-15 Plunger

Publications (2)

Publication Number Publication Date
EP2861862A1 true EP2861862A1 (en) 2015-04-22
EP2861862B1 EP2861862B1 (en) 2017-07-05

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EP13715999.2A Active EP2861862B1 (en) 2012-06-18 2013-04-15 Plunger

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US (1) US9599081B2 (en)
EP (1) EP2861862B1 (en)
CN (1) CN104395598B (en)
DE (1) DE102012210176A1 (en)
PL (1) PL2861862T3 (en)
WO (1) WO2013189623A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013201335A1 (en) * 2013-01-29 2014-07-31 Schaeffler Technologies Gmbh & Co. Kg tappet
EP3173590B1 (en) * 2015-11-24 2018-06-20 Aktiebolaget SKF Cam follower roller device with washer
US10119607B2 (en) 2016-04-15 2018-11-06 Koyo Bearings North America Llc Follower mechanism
DE102017109761B4 (en) * 2017-05-08 2021-03-11 Schaeffler Technologies AG & Co. KG Plunger
US11149593B2 (en) 2019-10-03 2021-10-19 Koyo Bearings North America Llc Tappet assembly with formed anti-rotation alignment device
US11143059B2 (en) 2019-10-03 2021-10-12 Koyo Bearings North America Llc Tappet assembly with unground outer cup

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327860A (en) * 1992-10-14 1994-07-12 Volkswagen Ag Hydraulic tappet-clearance compensating arrangement for a cam-controlled valve lifter
US5273005A (en) 1993-03-11 1993-12-28 General Motors Corporation Enlarged shaft roller lifter with retention means
US7793583B2 (en) * 2006-12-06 2010-09-14 Schaeffler Kg Mechanical tappet in particular for a fuel pump of an internal combustion engine
DE102010022318B4 (en) 2010-06-01 2017-09-07 Schaeffler Technologies AG & Co. KG roller plunger
DE102010026362A1 (en) 2010-07-07 2012-01-12 Schaeffler Technologies Gmbh & Co. Kg Roller shaft for fuel high pressure pump and valve train in quality or quantity-regular combustion engine, has separate contact body located in pocket, where contact body immediately contacts counter part or forehead
DE102011085243B4 (en) 2011-10-26 2021-08-12 Schaeffler Technologies AG & Co. KG Roller tappet with axial bolt retainer
DE102012208791A1 (en) 2012-05-25 2013-11-28 Schaeffler Technologies AG & Co. KG Plunger for e.g. high pressure pump, for pumping diesel fuel into quality or quantity-controlled internal combustion engine, has notch-like discharges longitudinally extending at casing, and roller with ring edges projecting into discharges

Also Published As

Publication number Publication date
CN104395598A (en) 2015-03-04
PL2861862T3 (en) 2017-12-29
WO2013189623A1 (en) 2013-12-27
EP2861862B1 (en) 2017-07-05
DE102012210176A1 (en) 2013-12-19
US9599081B2 (en) 2017-03-21
CN104395598B (en) 2017-08-25
US20150192098A1 (en) 2015-07-09

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