EP3094855A1 - Roller tappet device and method for producing a roller tappet device - Google Patents

Roller tappet device and method for producing a roller tappet device

Info

Publication number
EP3094855A1
EP3094855A1 EP15721682.1A EP15721682A EP3094855A1 EP 3094855 A1 EP3094855 A1 EP 3094855A1 EP 15721682 A EP15721682 A EP 15721682A EP 3094855 A1 EP3094855 A1 EP 3094855A1
Authority
EP
European Patent Office
Prior art keywords
bearing shell
housing
roller
plunger
circumferential surface
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
EP15721682.1A
Other languages
German (de)
French (fr)
Other versions
EP3094855B1 (en
Inventor
Stefan Roider
Ludwig Kirschenhofer
Detlef Haupt
Christian Kemna
Martin Schmidt
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP3094855A1 publication Critical patent/EP3094855A1/en
Application granted granted Critical
Publication of EP3094855B1 publication Critical patent/EP3094855B1/en
Not-in-force 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
    • 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
    • F04B1/0413—Cams
    • F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams

Definitions

  • the present invention relates to a roller tappet device for a pump and to a corresponding method for producing the roller tappet device.
  • the object of the invention is to provide a roller tappet device for a pump, which contributes to a reliable and efficient operation of the pump. It is another object of the invention to provide a corresponding method for producing the roller tappet device.
  • the invention is characterized by a roller tappet device for a pump, comprising a plunger with a longitudinal axis, a plunger housing with a In ⁇ nenmantel structure, a bearing shell with an outer circumferential surface, and a roller with a rotation axis.
  • the bearing shell has a bearing shell recess in which the roller is rotatably mounted. Furthermore, the bearing shell on a side facing away from the LagerschalenausEnglishung a pin which is received in a housing bearing of the plunger housing.
  • the bearing shell is fixedly coupled to the plunger housing via an outer circumferential surface of the journal and an inner circumferential surface of the housing bearing.
  • the roller is supported on a drive device of the pump. The roller is also designed to transmit a force from the drive device via the bearing shell to the plunger along the longitudinal axis during operation of the pump.
  • the pump is a high-pressure fuel pump, for example, a high-pressure diesel pump.
  • the drive device comprises, in particular, a cam on which the roller is supported, for example.
  • the roller tappet device is designed to put a rotational movement of the cam switch ⁇ into a linear movement along the longitudinal axis.
  • a diameter of the pin is less than 75% of a diameter of the inner surface of the Tappet housing. In a further embodiment, the diameter of the pin is in particular less than 35% of the diameter of the inner circumferential surface of the plunger housing.
  • the bearing shell and the plunger housing for example, have corresponding openings, which allow fluid flow along the longitudinal axis.
  • the outer circumferential surface of the pin and the inner circumferential surface of the housing bearing are fixedly coupled by means of a press fit.
  • the interference fit allows a reliable, cost-effective coupling of the bearing shell with the plunger housing.
  • the interference fit is an oil press dressing.
  • the bearing shell recess facing away from the bearing shell on a bearing shell stop surface.
  • the bearing shell facing side of the plunger housing has a housing stop surface. The bearing shell stop surface and the housing stop surface are formed parallel to each other.
  • the mutually parallel stop surfaces is contributed to a perpendicularity of a rotation axis of the roller and the longitudinal axis.
  • this enables an efficient and reliable operation of the roller tappet device.
  • the parallel stop ⁇ surfaces are parallel to the axis of rotation of the roller.
  • the inner lateral surface of the tappet housing is designed to limit an offset of the roller in the direction of the axis of rotation. Limiting the offset of the roller in the direction of the axis of rotation contributes to an efficient and reliable operation of the roller tappet device.
  • the inner circumferential surface of the plunger housing has two flat, mutually diametrical contact surfaces, which are designed to limit the displacement of the roller in the direction of the axis of rotation.
  • the roll is thus particularly efficiently contributed to limiting the offset.
  • the contact surfaces are in particular parallel to the longitudinal axis.
  • At least one bearing shell part region of the outer circumferential surface of the bearing shell and a respective housing ⁇ partial region of the inner circumferential surface of the plunger housing are formed parallel to each other curved such that a torque with respect to the longitudinal axis of the bearing shell on the
  • Plunger housing is transferable.
  • this helps to prevent a rotation of the bearing shell with respect to the plunger housing.
  • a VerFDbegrenzung the bearing shell contributes, for example, during assembly of the roller tappet ⁇ device that the fixed coupling of the bearing shell can be done with the plunger housing.
  • functional decoupling of the Verfbegrenzung means of the outer circumferential surface of the bearing shell of the fixed coupling of the bearing shell by means of the outer surface of the pin, for example, a variable geometry of the inner circumferential surface of the plunger housing is made possible, so that a particularly advantageous limitation of the offset of the role in the direction of the axis of rotation is contributed.
  • the outer circumferential surface of the bearing shell for limiting the rotation is rotationally asymmetrical with respect to the longitudinal axis.
  • the at least one bearing shell part region and the respective housing part region are planar.
  • the outer circumferential surface of the bearing shell at least two diametrically parallel planar bearing shell portions, as well as the inner circumferential surface of the plunger housing corresponding thereto in each case at least two diametrically parallel flat housing partial areas.
  • the at least one bearing shell portion and the at least one housing portion may also be referred to as key surfaces.
  • the invention is characterized by a method for producing a roller tappet device for a pump according to the first aspect, wherein a plunger with a longitudinal axis, a plunger housing with an inner circumferential surface, a bearing shell with an outer circumferential surface, and a roller with a rotation axis to be provided.
  • the bearing shell has a bearing shell recess in which the roller is rotatably mounted. Furthermore, the bearing shell on a side facing away from the LagerschalenausEnglishung a pin which is received in a housing bearing of the plunger housing.
  • the bearing shell is fixedly connected to the plunger housing via a predominantlyman ⁇ telology of the pin and an inner circumferential surface of the housing ⁇ bearing fixed by means of interference fit.
  • the roller is supported on a drive device of the pump.
  • the roller tappet device has a VerFDbe ⁇ limitation of the bearing shell with respect to the plunger housing, for example by at least one bearing shell portion of the outer circumferential surface of the bearing shell and a respective housing ⁇ partial region of the inner circumferential surface of the plunger housing are formed parallel to each other curved such that a torque with respect to the longitudinal axis of the bearing shell is transferable to the plunger ⁇ housing, it is helped that a pressing of the bearing shell can be done with the plunger housing.
  • the bearing shell by means of the VerFDbegrenzung with respect to the plunger housing initially from ⁇ directed and then pressed.
  • Figure 2 is a perspective view of a bearing shell of the roller tappet device according to Figure 1
  • Figure 3 is a perspective view of a plunger housing of the roller tappet device according to Figure 1
  • Figure 4 is a perspective view of
  • a roller tappet device 1 for a pump in particular for a high-pressure fuel pump, comprises a tappet 3 with a longitudinal axis L (FIG. 1).
  • the roller tappet device 1 further comprises a plunger housing 5, a bearing shell 7, and a roller 9, for example, the axisymmetric with respect to the
  • the pump for example, a diesel ⁇ high pressure pump.
  • the pump is, for example, a gasoline high pressure pump.
  • the pump has, for example, a drive device, a pump housing, and a piston (not shown in detail).
  • the piston of the pump is coupled, for example, with the plunger 3.
  • the drive device comprises, for example, a shaft with a cam on which the roller is supported.
  • a rotational movement of the cam is converted into a linear movement of the roller tappet device 1 along the longitudinal axis L.
  • the roller 9 is rotatably mounted in this context about an axis of rotation D, so that is contributed to a rei ⁇ low-friction rolling of the cam.
  • the plunger housing 5 is guided with its Au ⁇ zmantel components 10 in the pump housing, so that in operation of the pump to a precise linear movement of
  • Roller plunger device along the longitudinal axis L is contributed.
  • a force transmission of the cam takes place during operation of the pump via the roller tappet device 1 on the piston.
  • the bearing shell 7 has a pin 11 with an outer circumferential surface 12. On the pin 11 sits, for example, the 0
  • the bearing shell 7 also has, for example, at least one bearing shell opening 13, which allows fluid flow along the longitudinal axis L (FIG. 2). Furthermore, the bearing shell 7 has two opposite bearing shell subareas 15 on its outer lateral surface 16, a bearing shell abutment surface 17, and facing away from this a bearing shell recess 19, which is designed to receive the roller 9.
  • the tappet housing 5 is formed, the bearing shell réelle take ⁇ . 7
  • the plunger housing 5 a housing bearing 21 with an inner circumferential surface 22 ( Figure 3), in which the pin 11 is inserted.
  • the plunger housing 5, for example, further comprises at least one housing opening 23, which corresponds in particular to the respective bearing shell opening 13.
  • the plunger housing 5 has two opposite housing partial regions 25 on its inner lateral surface 26, which correspond to the bearing shell partial regions 15 of the bearing shell 7. Furthermore, the plunger housing 5 has a housing ⁇ stop surface 27, which corresponds to the bearing shell stop surface 17 of the bearing shell 7.
  • the outer circumferential surface 16 of the bearing shell 7 and the inner lateral surface 26 of the tappet housing 5 are in particular rotationally asymmetrical with respect to the longitudinal axis L.
  • rotation of the bearing shell 7 is limited in the plunger housing 5 about the longitudinal axis L. Furthermore, this allows alignment of the bearing shell 7 with respect to the plunger housing 5 during assembly of the roller tappet device first
  • the bearing shell portions 15 and the housing portions 25 are flat and parallel to each other.
  • the bearing shell portions 15 and the housing ⁇ partial areas 25 may also be referred to as a key surface-like geometry.
  • the housing stop surface 27 limits an offset of the La ⁇ gerschale 7 along the longitudinal axis L with respect to the plunger housing 5 in the direction of the plunger 3.
  • the housing stop surface 27 is for example on the bearing shell stop surface 17.
  • the bearing shell stop surface 17 and the GeHouseanschlag- surface 27 are formed parallel to each other in this context, in particular parallel to the axis of rotation D of the roller 9.
  • a precise alignment of the bearing shell 7 with the roller 9 with respect to the longitudinal axis L he ⁇ allows.
  • a perpendicularity of the axis of rotation D with respect to the longitudinal axis L is contributed.
  • the outer circumferential surface 12 of the pin 11 is fixedly coupled to the inner lateral surface 22 of the housing bearing 21.
  • the bearing shell 7 is fixed in particular via a press fit on the outer circumferential surface 12 of the pin 11 with the plunger housing 5 on the inner circumferential surface 22 of the housing bearing 21, wherein a diameter of the press dressing is less than 75% of a diameter of the outer circumferential surface 16 of the bearing shell 7.
  • the diameter of the press fit is less than 35% of the diameter of the outer circumferential surface 16 of the bearing shell 7.
  • surfaces of the bearing shell 7 bezie ⁇ tion of the plunger housing 5 to align the bearing shell 7 with respect to the plunger housing 5 functionally separated from surfaces for fixing the bearing shell 7 with respect to the plunger housing 5.
  • This allows a variable design of the inner circumferential surface 26 of the plunger housing 5, in particular With regard to the bearing of the roller 9.
  • a force acts on the roller 9 in the direction of the rotation axis D.
  • the inner circumferential surface 26 of the plunger housing 5 is formed in this context to limit an offset of the roller 9 in the direction of the rotation axis D.
  • the inner lateral surface 26 of the tappet housing 5 has contact surfaces 29 opposite thereto (see also FIG. 1).
  • the contact surfaces 29 may be formed, for example, each as a flat contact surface with respect to the roller 9.
  • Figure 4 shows a perspective view of the roller tappet ⁇ device 1 according to figure 1 along the longitudinal axis L.
  • a roller tappet ⁇ device 1 allows a decoupling of the press fit of the outer surface 10 of the tappet housing 5 for guidance in the pump casing.
  • decoupling of the press fit from a bearing surface 30 (see FIG. 2) of the bearing shell recess 19 allows for radial roller guide.
  • such a roller tappet device 1 contributes to an immediate power line between the piston and the bearing shell 7.

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)
  • Details Of Reciprocating Pumps (AREA)

Abstract

The invention relates to a roller tappet device (1) for a pump, comprising a tappet (3) with a longitudinal axis (L), a tappet housing (5) with an inner lateral surface (26), a bearing shell (7) with an outer lateral surface (16), and a roller (9) with a rotational axis (D). The bearing shell (7) has a bearing shell recess (19) in which the roller (9) is rotatably mounted, and the bearing shell (7) has a pin (11) on a face facing away from the bearing shell recess (19), said pin being received in a housing bearing (21) of the tappet housing (5). The bearing shell (7) is coupled to the tappet housing (5) in a fixed manner via an outer lateral surface (12) of the pin (11) and an inner lateral surface (22) of the housing bearing (21), and the roller (9) is supported on a drive device of the pump and is designed to transmit a force from the drive device to the tappet (3) via the bearing shell (7) along the longitudinal axis (L) during the operation of the pump.

Description

Beschreibung description
Rollenstößelvorrichtung und Verfahren zur Herstellung einer RollenstößelVorrichtung Roller tappet device and method of manufacturing a roller tappet device
Die vorliegende Erfindung betrifft eine Rollenstößelvorrichtung für eine Pumpe sowie ein korrespondierendes Verfahren zur Herstellung der Rollenstößelvorrichtung. Aufgabe der Erfindung ist es, eine Rollenstößelvorrichtung für eine Pumpe zu schaffen, die zu einem zuverlässigen und effizienten Betrieb der Pumpe beiträgt. Ferner ist es Aufgabe der Erfindung ein korrespondierendes Verfahren zur Herstellung der Rollenstößelvorrichtung zu schaffen. The present invention relates to a roller tappet device for a pump and to a corresponding method for producing the roller tappet device. The object of the invention is to provide a roller tappet device for a pump, which contributes to a reliable and efficient operation of the pump. It is another object of the invention to provide a corresponding method for producing the roller tappet device.
Die Aufgabe wird gelöst durch die Merkmale der unabhängigen Patentansprüche. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet. Gemäß einem ersten Aspekt zeichnet sich die Erfindung aus durch eine Rollenstößelvorrichtung für eine Pumpe, umfassend einen Stößel mit einer Längsachse, ein Stößelgehäuse mit einer In¬ nenmantelfläche, eine Lagerschale mit einer Außenmantelfläche, und eine Rolle mit einer Drehachse. The object is solved by the features of the independent claims. Advantageous developments of the invention are characterized in the subclaims. According to a first aspect, the invention is characterized by a roller tappet device for a pump, comprising a plunger with a longitudinal axis, a plunger housing with a In ¬ nenmantelfläche, a bearing shell with an outer circumferential surface, and a roller with a rotation axis.
Die Lagerschale weist eine Lagerschalenausnehmung auf, in der die Rolle drehbar gelagert ist. Des Weiteren weist die Lagerschale auf einer der Lagerschalenausnehmung abgewandten Seite einen Zapfen auf, der in einem Gehäuselager des Stößelgehäuses aufgenommen ist. Die Lagerschale ist über eine Außenmantelfläche des Zapfens und eine Innenmantelfläche des Gehäuselagers mit dem Stößelgehäuse fix gekoppelt. Die Rolle stützt sich an einer Antriebseinrichtung der Pumpe ab. Die Rolle ist ferner ausgebildet, im Betrieb der Pumpe eine Kraft von der Antriebseinrichtung über die Lagerschale an den Stößel entlang der Längsachse zu übertragen. The bearing shell has a bearing shell recess in which the roller is rotatably mounted. Furthermore, the bearing shell on a side facing away from the Lagerschalenausnehmung a pin which is received in a housing bearing of the plunger housing. The bearing shell is fixedly coupled to the plunger housing via an outer circumferential surface of the journal and an inner circumferential surface of the housing bearing. The roller is supported on a drive device of the pump. The roller is also designed to transmit a force from the drive device via the bearing shell to the plunger along the longitudinal axis during operation of the pump.
Durch eine Fixierung der Lagerschale mit dem Stößelgehäuse wird dazu beigetragen ein Kippen der Lagerschale in dem Stößelgehäuse zu vermeiden. Durch die Fixierung der Lagerschale mit dem Stößelgehäuse mittels fixer Kopplung über die Außenmantelfläche des Zapfens und der Innenmantelfläche des Gehäuselagers wird eine Entkopplung der Fixierung von einer Lagerung der Rolle ermöglicht. Ferner wird durch die fixe Kopplung über die Außenmantelfläche des Zapfens und der Innenmantelfläche des Gehäuselagers eine Entkopplung der Fixierung von einer Führung des Stößelgehäuses entlang der Längsachse ermöglicht. Des Weiteren wird durch die fixe Kopplung über die Außenmantelfläche des Zapfens und der Innenmantelfläche des Gehäuselagers zu einer unmittelbaren Kraftleitung zwischen der Lagerschale und dem Stößel beigetragen, so dass bei¬ spielsweise eine übersetzungsfreie Kraftleitung zwischen der Rolle und einem an einer der Lagerschale abgewandten Seite des Stößels angeordneten Kolben der Pumpe ermöglicht wird. Insbesondere ist die Pumpe eine Kraftstoffhochdruckpumpe, beispielsweise eine Dieselhochdruckpumpe. Die Antriebsein¬ richtung umfasst insbesondere einen Nocken, auf dem sich die Rolle beispielsweise abstützt. In vorteilhafter Weise ist die Rollenstößelvorrichtung ausgebildet, eine Rotationsbewegung des Nockens in eine Linearbewegung entlang der Längsachse umzu¬ setzen . By fixing the bearing shell with the plunger housing is helped to avoid tilting of the bearing shell in the plunger housing. By fixing the bearing shell with the plunger housing by means of a fixed coupling over the outer circumferential surface of the journal and the inner circumferential surface of the housing bearing, a decoupling of the fixation of a bearing of the roller is made possible. Furthermore, a decoupling of the fixation of a guide of the plunger housing along the longitudinal axis is made possible by the fixed coupling on the outer circumferential surface of the pin and the inner circumferential surface of the housing bearing. Furthermore, contributed by the fixed coupling via the outer surface of the pin and the inner surface of the housing bearing an immediate power line between the bearing cup and the plunger, so that when ¬ play, a translation-free power line between the roller and a facing away from one of the bearing shell side of the plunger arranged piston of the pump is made possible. In particular, the pump is a high-pressure fuel pump, for example, a high-pressure diesel pump. The drive device comprises, in particular, a cam on which the roller is supported, for example. Advantageously, the roller tappet device is designed to put a rotational movement of the cam switch ¬ into a linear movement along the longitudinal axis.
In einer Ausführungsform beträgt ein Durchmesser des Zapfens weniger als 75% eines Durchmessers der Innenmantelfläche des Stößelgehäuses. In einer weiteren Ausführungsform beträgt der Durchmesser des Zapfens insbesondere weniger als 35% des Durchmessers der Innenmantelfläche des Stößelgehäuses. Die Lagerschale sowie das Stößelgehäuse weisen beispielsweise korrespondierende Öffnungen auf, die einen Fluidfluss entlang der Längsachse ermöglichen. In one embodiment, a diameter of the pin is less than 75% of a diameter of the inner surface of the Tappet housing. In a further embodiment, the diameter of the pin is in particular less than 35% of the diameter of the inner circumferential surface of the plunger housing. The bearing shell and the plunger housing, for example, have corresponding openings, which allow fluid flow along the longitudinal axis.
In einer vorteilhaften Ausgestaltung gemäß dem ersten Aspekt sind die Außenmantelfläche des Zapfens und die Innenmantelfläche des Gehäuselagers mittels eines Pressverbands fix gekoppelt. In an advantageous embodiment according to the first aspect, the outer circumferential surface of the pin and the inner circumferential surface of the housing bearing are fixedly coupled by means of a press fit.
Der Pressverband ermöglicht eine zuverlässige, kostengünstige Kopplung der Lagerschale mit dem Stößelgehäuse. Insbesondere ist der Pressverband ein Ölpressverband. The interference fit allows a reliable, cost-effective coupling of the bearing shell with the plunger housing. In particular, the interference fit is an oil press dressing.
In einer weiteren vorteilhaften Ausgestaltung gemäß dem ersten Aspekt weist die der Lagerschalenausnehmung abgewandte Seite der Lagerschale eine Lagerschalenanschlagfläche auf. Ferner weist die der Lagerschale zugewandte Seite des Stößelgehäuses eine Gehäuseanschlagfläche auf. Die Lagerschalenanschlagfläche und die Gehäuseanschlagfläche sind parallel zueinander ausgebildet. In a further advantageous embodiment according to the first aspect, the bearing shell recess facing away from the bearing shell on a bearing shell stop surface. Further, the bearing shell facing side of the plunger housing has a housing stop surface. The bearing shell stop surface and the housing stop surface are formed parallel to each other.
Durch die zueinander parallelen Anschlagflächen wird zu einer Rechtwinkligkeit einer Drehachse der Rolle und der Längsachse beigetragen. In vorteilhafter Weise wird dadurch ein effizienter und zuverlässiger Betrieb der Rollenstößelvorrichtung ermöglicht. Insbesondere sind die zueinander parallelen Anschlag¬ flächen parallel zu der Drehachse der Rolle. By the mutually parallel stop surfaces is contributed to a perpendicularity of a rotation axis of the roller and the longitudinal axis. Advantageously, this enables an efficient and reliable operation of the roller tappet device. In particular, the parallel stop ¬ surfaces are parallel to the axis of rotation of the roller.
In einer weiteren vorteilhaften Ausgestaltung gemäß dem ersten Aspekt ist die Innenmantelfläche des Stößelgehäuses ausgebildet einen Versatz der Rolle in Richtung der Drehachse zu begrenzen. Eine Begrenzung des Versatzes der Rolle in Richtung der Drehachse trägt zu einem effizienten und zuverlässigen Betrieb der Rollenstößelvorrichtung bei. In einer weiteren vorteilhaften Ausgestaltung gemäß dem ersten Aspekt weist die Innenmantelfläche des Stößelgehäuses zwei ebene, zueinander diametrale Anlaufflächen auf, die ausgebildet sind den Versatz der Rolle in Richtung der Drehachse zu begrenzen. In vorteilhafter Weise wird so besonders effizient zur Begrenzung des Versatzes der Rolle beigetragen. Die Anlaufflächen sind dabei insbesondere parallel zu der Längsachse. In a further advantageous embodiment according to the first aspect, the inner lateral surface of the tappet housing is designed to limit an offset of the roller in the direction of the axis of rotation. Limiting the offset of the roller in the direction of the axis of rotation contributes to an efficient and reliable operation of the roller tappet device. In a further advantageous embodiment according to the first aspect, the inner circumferential surface of the plunger housing has two flat, mutually diametrical contact surfaces, which are designed to limit the displacement of the roller in the direction of the axis of rotation. Advantageously, the roll is thus particularly efficiently contributed to limiting the offset. The contact surfaces are in particular parallel to the longitudinal axis.
In einer weiteren vorteilhaften Ausgestaltung gemäß dem ersten Aspekt sind zumindest ein Lagerschalenteilbereich der Außenmantelfläche der Lagerschale sowie ein jeweiliger Gehäuse¬ teilbereich der Innenmantelfläche des Stößelgehäuses parallel zueinander derart gekrümmt ausgebildet, dass ein Drehmoment bezüglich der Längsachse von der Lagerschale auf das In a further advantageous embodiment according to the first aspect, at least one bearing shell part region of the outer circumferential surface of the bearing shell and a respective housing ¬ partial region of the inner circumferential surface of the plunger housing are formed parallel to each other curved such that a torque with respect to the longitudinal axis of the bearing shell on the
Stößelgehäuse übertragbar ist. Plunger housing is transferable.
In vorteilhafter Weise wird dadurch dazu beigetragen, eine Verdrehung der Lagerschale bezüglich des Stößelgehäuses zu vermeiden. Eine derartige Verdrehbegrenzung der Lagerschale trägt beispielsweise bei einer Montage der Rollenstößel¬ vorrichtung dazu bei, dass die fixe Kopplung der Lagerschale mit dem Stößelgehäuse gerichtet erfolgen kann. Durch funktionale Entkopplung der Verdrehbegrenzung mittels der Außenmantelfläche der Lagerschale von der fixen Kopplung der Lagerschale mittels der Außenmantelfläche des Zapfens wird beispielsweise eine variable Geometrie der Innenmantelfläche des Stößelgehäuses ermöglicht, so dass zu einer besonders vorteilhaften Begrenzung des Versatzes der Rolle in Richtung der Drehachse beigetragen wird . Insbesondere ist die Außenmantelfläche der Lagerschale zur Begrenzung der Verdrehung dabei rotationsasymmetrisch bezüglich der Längsachse ausgebildet. In einer weiteren vorteilhaften Ausgestaltung gemäß dem ersten Aspekt sind der zumindest eine Lagerschalenteilbereich sowie der jeweilige Gehäuseteilbereich eben ausgebildet. Advantageously, this helps to prevent a rotation of the bearing shell with respect to the plunger housing. Such a Verdrehbegrenzung the bearing shell contributes, for example, during assembly of the roller tappet ¬ device that the fixed coupling of the bearing shell can be done with the plunger housing. By functional decoupling of the Verdrehbegrenzung means of the outer circumferential surface of the bearing shell of the fixed coupling of the bearing shell by means of the outer surface of the pin, for example, a variable geometry of the inner circumferential surface of the plunger housing is made possible, so that a particularly advantageous limitation of the offset of the role in the direction of the axis of rotation is contributed. In particular, the outer circumferential surface of the bearing shell for limiting the rotation is rotationally asymmetrical with respect to the longitudinal axis. In a further advantageous embodiment according to the first aspect, the at least one bearing shell part region and the respective housing part region are planar.
In vorteilhafter Weise wird so besonders kostengünstig zu einer Vermeidung der Verdrehung der Lagerschale beigetragen. Insbesondere weist die Außenmantelfläche der Lagerschale mindestens zwei diametral parallele ebene Lagerschalenteilbereiche, sowie die Innenmantelfläche des Stößelgehäuses dazu korrespondierend jeweils mindestens zwei diametral parallele ebene Gehäuse- teilbereiche auf. Der mindestens eine Lagerschalenteilbereich sowie der mindestens eine Gehäuseteilbereich können auch als Schlüsselflächen bezeichnet werden. Advantageously, a particularly cost-effective contribution to avoiding the rotation of the bearing shell is made. In particular, the outer circumferential surface of the bearing shell at least two diametrically parallel planar bearing shell portions, as well as the inner circumferential surface of the plunger housing corresponding thereto in each case at least two diametrically parallel flat housing partial areas. The at least one bearing shell portion and the at least one housing portion may also be referred to as key surfaces.
Gemäß einem zweiten Aspekt zeichnet sich die Erfindung aus durch ein Verfahren zur Herstellung einer Rollenstößelvorrichtung für eine Pumpe gemäß dem ersten Aspekt, bei dem ein Stößel mit einer Längsachse, ein Stößelgehäuse mit einer Innenmantelfläche, eine Lagerschale mit einer Außenmantelfläche, und eine Rolle mit einer Drehachse bereitgestellt werden. According to a second aspect, the invention is characterized by a method for producing a roller tappet device for a pump according to the first aspect, wherein a plunger with a longitudinal axis, a plunger housing with an inner circumferential surface, a bearing shell with an outer circumferential surface, and a roller with a rotation axis to be provided.
Die Lagerschale weist eine Lagerschalenausnehmung auf, in der die Rolle drehbar gelagert wird. Des Weiteren weist die Lagerschale auf einer der Lagerschalenausnehmung abgewandten Seite einen Zapfen auf, der in einem Gehäuselager des Stößelgehäuses aufgenommen wird. Die Lagerschale wird über eine Außenman¬ telfläche des Zapfens und eine Innenmantelfläche des Gehäuse¬ lagers mit dem Stößelgehäuse mittels Pressverband fix gekoppelt. The bearing shell has a bearing shell recess in which the roller is rotatably mounted. Furthermore, the bearing shell on a side facing away from the Lagerschalenausnehmung a pin which is received in a housing bearing of the plunger housing. The bearing shell is fixedly connected to the plunger housing via a Außenman ¬ telfläche of the pin and an inner circumferential surface of the housing ¬ bearing fixed by means of interference fit.
Die Rolle wird an einer Antriebseinrichtung der Pumpe abgestützt. Im Falle, dass die Rollenstößelvorrichtung eine Verdrehbe¬ grenzung der Lagerschale bezüglich des Stößelgehäuses aufweist, beispielsweise indem zumindest ein Lagerschalenteilbereich der Außenmantelfläche der Lagerschale sowie ein jeweiliger Gehäuse¬ teilbereich der Innenmantelfläche des Stößelgehäuses parallel zueinander derart gekrümmt ausgebildet sind, dass ein Drehmoment bezüglich der Längsachse von der Lagerschale auf das Stößel¬ gehäuse übertragbar ist, wird dazu beigetragen, dass ein Verpressen der Lagerschale mit dem Stößelgehäuse gerichtet erfolgen kann. Beispielsweise wird die Lagerschale mittels der Verdrehbegrenzung bezüglich des Stößelgehäuses zunächst aus¬ gerichtet und anschließend verpresst. Ausführungsbeispiele der Erfindung sind im Folgenden anhand der schematischen Zeichnungen erläutert. The roller is supported on a drive device of the pump. In the event that the roller tappet device has a Verdrehbe ¬ limitation of the bearing shell with respect to the plunger housing, for example by at least one bearing shell portion of the outer circumferential surface of the bearing shell and a respective housing ¬ partial region of the inner circumferential surface of the plunger housing are formed parallel to each other curved such that a torque with respect to the longitudinal axis of the bearing shell is transferable to the plunger ¬ housing, it is helped that a pressing of the bearing shell can be done with the plunger housing. For example, the bearing shell by means of the Verdrehbegrenzung with respect to the plunger housing initially from ¬ directed and then pressed. Embodiments of the invention are explained below with reference to the schematic drawings.
Es zeigen: Figur 1 ein Längsschnitt einer Rollenstößelvorrichtung, 1 shows a longitudinal section of a roller tappet device,
Figur 2 eine perspektivische Darstellung einer Lagerschale der Rollenstößelvorrichtung gemäß Figur 1, Figur 3 eine perspektivische Darstellung eines Stößelgehäuses der Rollenstößelvorrichtung gemäß Figur 1, und Figure 2 is a perspective view of a bearing shell of the roller tappet device according to Figure 1, Figure 3 is a perspective view of a plunger housing of the roller tappet device according to Figure 1, and
Figur 4 eine perspektivische Darstellung der Figure 4 is a perspective view of
Rollenstößelvorrichtung gemäß Figur 1.  Roller tappet device according to FIG. 1.
Elemente gleicher Konstruktion oder Funktion sind figurenübergreifend mit den gleichen Bezugszeichen versehen. Eine Rollenstößelvorrichtung 1 für eine Pumpe, insbesondere für eine Kraftstoffhochdruckpumpe umfasst einen Stößel 3 mit einer Längsachse L (Figur 1) . Die Rollenstößelvorrichtung 1 weist ferner ein Stößelgehäuse 5, eine Lagerschale 7, sowie eine Rolle 9 auf, die beispielsweise achssymmetrisch bezüglich der Elements of the same construction or function are provided across the figures with the same reference numerals. A roller tappet device 1 for a pump, in particular for a high-pressure fuel pump, comprises a tappet 3 with a longitudinal axis L (FIG. 1). The roller tappet device 1 further comprises a plunger housing 5, a bearing shell 7, and a roller 9, for example, the axisymmetric with respect to the
Längsachse L angeordnet sind. Longitudinal axis L are arranged.
Bei der Pumpe handelt es sich beispielsweise um eine Diesel¬ hochdruckpumpe. In anderen Ausführungsbeispielen ist die Pumpe beispielsweise eine Benzinhochdruckpumpe. The pump, for example, a diesel ¬ high pressure pump. In other embodiments, the pump is, for example, a gasoline high pressure pump.
Die Pumpe weist beispielsweise eine Antriebseinrichtung, ein Pumpengehäuse, sowie einen Kolben auf (nicht näher dargestellt) . Der Kolben der Pumpe ist dabei beispielsweise mit dem Stößel 3 gekoppelt. The pump has, for example, a drive device, a pump housing, and a piston (not shown in detail). The piston of the pump is coupled, for example, with the plunger 3.
Die Antriebseinrichtung umfasst beispielsweise eine Welle mit einem Nocken, auf dem sich die Rolle abstützt. Im Betrieb der Pumpe wird eine Rotationsbewegung des Nockens in eine Line- arbewegung der Rollenstößelvorrichtung 1 entlang der Längsachse L umgesetzt. Insbesondere ist die Rolle 9 in diesem Zusammenhang drehbar um eine Drehachse D gelagert, so dass zu einem rei¬ bungsarmen Abrollen des Nockens beigetragen wird. Ferner ist beispielsweise das Stößelgehäuse 5 mit seiner Au¬ ßenmantelfläche 10 in dem Pumpengehäuse geführt, so dass im Betrieb der Pumpe zu einer präzisen Linearbewegung der The drive device comprises, for example, a shaft with a cam on which the roller is supported. During operation of the pump, a rotational movement of the cam is converted into a linear movement of the roller tappet device 1 along the longitudinal axis L. In particular, the roller 9 is rotatably mounted in this context about an axis of rotation D, so that is contributed to a rei ¬ low-friction rolling of the cam. Further, for example, the plunger housing 5 is guided with its Au ¬ ßenmantelfläche 10 in the pump housing, so that in operation of the pump to a precise linear movement of
Rollenstößelvorrichtung entlang der Längsachse L beigetragen wird. Insbesondere erfolgt eine Kraftübertragung des Nockens im Betrieb der Pumpe über die Rollenstößelvorrichtung 1 auf den Kolben . Roller plunger device along the longitudinal axis L is contributed. In particular, a force transmission of the cam takes place during operation of the pump via the roller tappet device 1 on the piston.
Die Lagerschale 7 weist einen Zapfen 11 mit einer Außenmantelfläche 12 auf. Auf dem Zapfen 11 sitzt beispielsweise der 0 The bearing shell 7 has a pin 11 with an outer circumferential surface 12. On the pin 11 sits, for example, the 0
Stößel 3 auf, so dass eine im Wesentlichen übersetzungsfreie Kraftleitung von der Lagerschale 7 auf den Kolben ermöglicht wird . Die Lagerschale 7 weist beispielsweise ferner mindestens eine Lagerschalenöffnung 13 auf, die einen Fluidstrom entlang der Längsachse L ermöglicht (Figur 2) . Des Weiteren weist die Lagerschale 7 zwei gegenüberliegende Lagerschalenteilbereiche 15 an ihrer Außenmantelfläche 16, eine Lagerschalenanschlag- fläche 17, sowie von dieser abgewandt eine Lagerschalenaus- nehmung 19 auf, die ausgebildet ist die Rolle 9 aufzunehmen. Plunger 3, so that a substantially translation-free power line is made possible by the bearing shell 7 on the piston. The bearing shell 7 also has, for example, at least one bearing shell opening 13, which allows fluid flow along the longitudinal axis L (FIG. 2). Furthermore, the bearing shell 7 has two opposite bearing shell subareas 15 on its outer lateral surface 16, a bearing shell abutment surface 17, and facing away from this a bearing shell recess 19, which is designed to receive the roller 9.
Das Stößelgehäuse 5 ist ausgebildet die Lagerschale 7 aufzu¬ nehmen. In diesem Zusammenhang weist das Stößelgehäuse 5 ein Gehäuselager 21 mit einer Innenmantelfläche 22 auf (Figur 3) , in welches der Zapfen 11 eingeführt wird. Das Stößelgehäuse 5 weist beispielsweise ferner mindestens eine Gehäuseöffnung 23 auf, die insbesondere zu der jeweiligen Lagerschalenöffnung 13 korrespondiert . The tappet housing 5 is formed, the bearing shell aufzu take ¬. 7 In this context, the plunger housing 5 a housing bearing 21 with an inner circumferential surface 22 (Figure 3), in which the pin 11 is inserted. The plunger housing 5, for example, further comprises at least one housing opening 23, which corresponds in particular to the respective bearing shell opening 13.
Des Weiteren weist das Stößelgehäuse 5 zwei gegenüberliegende Gehäuseteilbereiche 25 an seiner Innenmantelfläche 26 auf, die zu den Lagerschalenteilbereichen 15 der Lagerschale 7 korrespondieren. Ferner weist das Stößelgehäuse 5 eine Gehäuse¬ anschlagfläche 27 auf, die zu der Lagerschalenanschlagfläche 17 der Lagerschale 7 korrespondiert. Furthermore, the plunger housing 5 has two opposite housing partial regions 25 on its inner lateral surface 26, which correspond to the bearing shell partial regions 15 of the bearing shell 7. Furthermore, the plunger housing 5 has a housing ¬ stop surface 27, which corresponds to the bearing shell stop surface 17 of the bearing shell 7.
Mittels der Lagerschalenteilbereiche 15 beziehungsweise der Gehäuseteilbereiche 25 sind die Außenmantelfläche 16 der La- gerschale 7 sowie die Innenmantelfläche 26 des Stößelgehäuses 5 insbesondere rotationsasymmetrisch bezüglich der Längsachse L ausgebildet. In vorteilhafter Weise wird dadurch ein Verdrehen der Lagerschale 7 in dem Stößelgehäuse 5 um die Längsachse L begrenzt. Ferner ermöglicht dies eine Ausrichtung der Lager- schale 7 bezüglich des Stößelgehäuses 5 bei einer Montage der Rollenstößelvorrichtung 1. By means of the bearing shell subregions 15 or the housing subregions 25, the outer circumferential surface 16 of the bearing shell 7 and the inner lateral surface 26 of the tappet housing 5 are in particular rotationally asymmetrical with respect to the longitudinal axis L. Advantageously, thereby rotation of the bearing shell 7 is limited in the plunger housing 5 about the longitudinal axis L. Furthermore, this allows alignment of the bearing shell 7 with respect to the plunger housing 5 during assembly of the roller tappet device first
Insbesondere sind die Lagerschalenteilbereiche 15 sowie die Gehäuseteilbereiche 25 dabei eben und parallel zueinander ausgebildet. Die Lagerschalenteilbereiche 15 sowie die Gehäuse¬ teilbereiche 25 können auch als schlüsselflächenartige Geometrie bezeichnet werden. Die Gehäuseanschlagfläche 27 begrenzt einen Versatz der La¬ gerschale 7 entlang der Längsachse L bezüglich des Stößelgehäuses 5 in Richtung des Stößels 3. Die Gehäuseanschlagfläche 27 liegt dazu beispielsweise auf der Lagerschalenanschlagfläche 17 auf. Die Lagerschalenanschlagfläche 17 sowie die Gehäuseanschlag- fläche 27 sind in diesem Zusammenhang parallel zueinander ausgebildet, insbesondere parallel zu der Drehachse D der Rolle 9. In vorteilhafter Weise wird so eine präzise Ausrichtung der Lagerschale 7 mit der Rolle 9 bezüglich der Längsachse L er¬ möglicht. Insbesondere wird zu einer Rechtwinkligkeit der Drehachse D bezüglich der Längsachse L beigetragen. In particular, the bearing shell portions 15 and the housing portions 25 are flat and parallel to each other. The bearing shell portions 15 and the housing ¬ partial areas 25 may also be referred to as a key surface-like geometry. The housing stop surface 27 limits an offset of the La ¬ gerschale 7 along the longitudinal axis L with respect to the plunger housing 5 in the direction of the plunger 3. The housing stop surface 27 is for example on the bearing shell stop surface 17. The bearing shell stop surface 17 and the Gehäuseanschlag- surface 27 are formed parallel to each other in this context, in particular parallel to the axis of rotation D of the roller 9. Advantageously, a precise alignment of the bearing shell 7 with the roller 9 with respect to the longitudinal axis L he ¬ allows. In particular, a perpendicularity of the axis of rotation D with respect to the longitudinal axis L is contributed.
Beispielsweise erfolgt bei der Montage der Rollenstößelvor¬ richtung 1 nach Ausrichtung der Lagerschale 7 bezüglich des Stößelgehäuses 5 eine Fixierung der Lagerschale 7 bezüglich des Stößelgehäuses 5, so dass eine Bewegung der Lagerschale 7 bezüglich des Stößelgehäuses 5 in Richtung der Drehachse D oder senkrecht zu der Drehachse D und der Längsachse L im Wesentlichen vermieden wird. Dabei wird insbesondere die Außenmantelfläche 12 des Zapfens 11 mit der Innenmantelfläche 22 des Gehäuselagers 21 fix gekoppelt. Die Lagerschale 7 wird insbesondere über einen Pressverband an der Außenmantelfläche 12 des Zapfens 11 mit dem Stößelgehäuse 5 an der Innenmantelfläche 22 des Gehäuselagers 21 fixiert, wobei ein Durchmesser des Pressverbands weniger als 75 % eines Durchmessers der Außenmantelfläche 16 der Lagerschale 7 beträgt. Insbesondere beträgt der Durchmesser des Pressverbands weniger als 35 % des Durchmessers der Außenmantelfläche 16 der La- gerschale 7. For example, when mounting the Rollenstößelvor ¬ direction 1 after alignment of the bearing shell 7 with respect to the plunger housing 5, a fixation of the bearing shell 7 with respect to the plunger housing 5, so that a movement of the bearing shell 7 with respect to the plunger housing 5 in the direction of the axis of rotation D or perpendicular to the axis of rotation D and the longitudinal axis L is substantially avoided. In particular, the outer circumferential surface 12 of the pin 11 is fixedly coupled to the inner lateral surface 22 of the housing bearing 21. The bearing shell 7 is fixed in particular via a press fit on the outer circumferential surface 12 of the pin 11 with the plunger housing 5 on the inner circumferential surface 22 of the housing bearing 21, wherein a diameter of the press dressing is less than 75% of a diameter of the outer circumferential surface 16 of the bearing shell 7. In particular, the diameter of the press fit is less than 35% of the diameter of the outer circumferential surface 16 of the bearing shell 7.
In vorteilhafter Weise sind Flächen der Lagerschale 7 bezie¬ hungsweise des Stößelgehäuses 5 zur Ausrichtung der Lagerschale 7 bezüglich des Stößelgehäuses 5 funktional getrennt von Flächen zur Fixierung der Lagerschale 7 bezüglich des Stößelgehäuses 5. Dies ermöglicht eine variable Gestaltung der Innenmantelfläche 26 des Stößelgehäuses 5, insbesondere im Hinblick auf die Lagerung der Rolle 9. Im Betrieb der Pumpe wirkt beispielsweise eine Kraft auf die Rolle 9 in Richtung der Drehachse D. Die Innenmantelfläche 26 des Stößelgehäuses 5 ist in diesem Zusammenhang ausgebildet einen Versatz der Rolle 9 in Richtung der Drehachse D zu begrenzen. Insbesondere weist die Innenmantelfläche 26 des Stößelgehäuses 5 dazu gegenüberliegende Anlaufflächen 29 auf (siehe auch Figur 1) · In an advantageous manner surfaces of the bearing shell 7 bezie ¬ tion of the plunger housing 5 to align the bearing shell 7 with respect to the plunger housing 5 functionally separated from surfaces for fixing the bearing shell 7 with respect to the plunger housing 5. This allows a variable design of the inner circumferential surface 26 of the plunger housing 5, in particular With regard to the bearing of the roller 9. In operation of the pump, for example, a force acts on the roller 9 in the direction of the rotation axis D. The inner circumferential surface 26 of the plunger housing 5 is formed in this context to limit an offset of the roller 9 in the direction of the rotation axis D. , In particular, the inner lateral surface 26 of the tappet housing 5 has contact surfaces 29 opposite thereto (see also FIG. 1).
Durch funktionale Trennung jeweiliger Flächen zur Ausrichtung und Fixierung der Lagerschale 7 bezüglich des Stößelgehäuses 5 können die Anlaufflächen 29 beispielsweise jeweils als ebene Kontaktfläche bezüglich der Rolle 9 ausgebildet sein. By functional separation of respective surfaces for alignment and fixation of the bearing shell 7 with respect to the plunger housing 5, the contact surfaces 29 may be formed, for example, each as a flat contact surface with respect to the roller 9.
Figur 4 zeigt eine perspektivische Darstellung der Rollenstößel¬ vorrichtung 1 gemäß Figur 1 entlang der Längsachse L. In vorteilhafter Weise ermöglicht eine derartige Rollenstößel¬ vorrichtung 1 eine Entkopplung des Pressverbands von der Außenmantelfläche 10 des Stößelgehäuses 5 zur Führung in dem Pumpengehäuse. Zudem wird eine Entkopplung des Pressverbands von einer Lagermantelfläche 30 (siehe Figur 2) der Lagerschalen- ausnehmung 19 zur radialen Rollenführung ermöglicht. Ferner trägt eine derartige Rollenstößelvorrichtung 1 zu einer unmittelbaren Kraftleitung zwischen dem Kolben und der Lagerschal 7 bei . Figure 4 shows a perspective view of the roller tappet ¬ device 1 according to figure 1 along the longitudinal axis L. Advantageously, such a roller tappet ¬ device 1 allows a decoupling of the press fit of the outer surface 10 of the tappet housing 5 for guidance in the pump casing. In addition, decoupling of the press fit from a bearing surface 30 (see FIG. 2) of the bearing shell recess 19 allows for radial roller guide. Furthermore, such a roller tappet device 1 contributes to an immediate power line between the piston and the bearing shell 7.
Bezugs zeichenliste Reference sign list
1 Rollenstößel 1 roller tappet
3 Stößel  3 pestles
5 Stößelgehäuse  5 ram housing
7 Lagerschale  7 bearing shell
9 Rolle  9 roll
10 Außenmantelfläche Stößelgehäuse 10 outer lateral surface plunger housing
11 Zapfen 11 cones
12 Außenmantelfläche Zapfen 12 outer lateral surface pin
13 Lagerschalenöffnung  13 bearing shell opening
15 Lagerschalenteilbereich  15 bearing shell part area
16 Außenmantelfläche Lagerschale 16 outer lateral surface bearing shell
17 Lagerschalenanschlagfläche 19 Lagerschalenausnehmung 17 Lagerschalenanschlagfläche 19 Lagerschalenausnehmung
21 Gehäuselager  21 housing bearings
22 Innenmantelfläche Gehäuselager 22 Inner lateral surface Housing bearing
23 Gehäuseöffnung 23 housing opening
25 Gehäuseteilbereich  25 housing part area
26 Innenmantelfläche Stößelgehäuse26 Inner lateral surface Plunger housing
27 Gehäuseanschlagfläche 27 housing stop surface
29 Anlauffläche  29 contact surface
30 Lagermantelfläche L Längsachse  30 Bearing surface L Longitudinal axis
D Drehachse  D rotation axis

Claims

Rollenstößelvorrichtung (1) für eine Pumpe, umfassendRoller tappet device (1) for a pump, comprising
- einen Stößel (3) mit einer Längsachse (L) , a plunger (3) with a longitudinal axis (L),
- ein Stößelgehäuse (5) mit einer Innenmantelfläche (26), a plunger housing (5) with an inner circumferential surface (26),
- eine Lagerschale (7) mit einer Außenmantelfläche (16), und- A bearing shell (7) with an outer circumferential surface (16), and
- eine Rolle (9) mit einer Drehachse (D) , wobei - A roller (9) with a rotation axis (D), wherein
- die Lagerschale (7) eine Lagerschalenausnehmung (19) aufweist, in der die Rolle (9) drehbar gelagert ist, - The bearing shell (7) has a Lagerschalenausnehmung (19), in which the roller (9) is rotatably mounted,
- die Lagerschale (7) auf einer der Lagerschalenausnehmung (19) abgewandten Seite einen Zapfen (11) aufweist, der in einem Gehäuselager (21) des Stößelgehäuses (5) aufgenommen ist, wobei die Lagerschale (7) über eine Außenmantelfläche (12) des Zapfens (11) und eine Innenmantelfläche (22) des- The bearing shell (7) on one of the Lagerschalenausnehmung (19) facing away from a pin (11) which is received in a housing bearing (21) of the plunger housing (5), wherein the bearing shell (7) via an outer circumferential surface (12) of the Spigot (11) and an inner circumferential surface (22) of the
Gehäuselagers (21) mit dem Stößelgehäuse (5) fix gekoppelt ist, und Housing bearing (21) with the plunger housing (5) is fixedly coupled, and
- die Rolle (9) sich an einer Antriebseinrichtung der Pumpe abstützt und ausgebildet ist, im Betrieb der Pumpe eine Kraft von der Antriebseinrichtung über die Lagerschale (7) an den Stößel (3) entlang der Längsachse (L) zu übertragen.  - The roller (9) is supported on a drive means of the pump and is adapted to transmit a force from the drive means via the bearing shell (7) to the plunger (3) along the longitudinal axis (L) during operation of the pump.
Rollenstößelvorrichtung (1) nach Anspruch 1, bei der die Außenmantelfläche (12) des Zapfens (11) und die Innen¬ mantelfläche (22) des Gehäuselagers (21) mittels eines Pressverbands fix gekoppelt sind. Roller tappet device (1) according to claim 1, wherein the outer circumferential surface (12) of the pin (11) and the inner ¬ coat surface (22) of the housing bearing (21) are fixedly coupled by means of a press fit.
Rollenstößelvorrichtung (1) nach einem der vorstehenden Ansprüche 1 oder 2, bei der die der LagerschalenausnehmungRoller tappet device (1) according to one of the preceding claims 1 or 2, wherein the bearing shell recess
(19) abgewandte Seite der Lagerschale (7) eine Lager- schalenanschlagfläche (17) aufweist und die der Lagerschale(19) facing away from the bearing shell (7) has a bearing shell stop surface (17) and that of the bearing shell
(7) zugewandte Seite des Stößelgehäuses (5) eine (7) facing side of the plunger housing (5) a
Gehäuseanschlagfläche (27) aufweist, wobei die Lager- schalenanschlagfläche (17) und die GehäuseanschlagflächeHousing stop surface (27), wherein the bearing shell stop surface (17) and the housing stop surface
(27) parallel zueinander ausgebildet sind. Rollenstößelvorrichtung (1) nach einem der vorstehenden Ansprüche 1 bis 3, bei der die Innenmantelfläche (26) des Stößelgehäuses (5) ausgebildet ist einen Versatz der Rolle (9) in Richtung der Drehachse (D) zu begrenzen. (27) are formed parallel to each other. Roller tappet device (1) according to one of the preceding claims 1 to 3, wherein the inner lateral surface (26) of the plunger housing (5) is designed to limit an offset of the roller (9) in the direction of the axis of rotation (D).
Rollenstößelvorrichtung (1) nach Anspruch 4, bei der die Innenmantelfläche (26) des Stößelgehäuses (5) zwei ebene, zueinander diametrale Anlaufflächen (29) aufweist, die ausgebildet sind den Versatz der Rolle (9) in Richtung der Drehachse (D) zu begrenzen. Roller tappet device (1) according to claim 4, wherein the inner lateral surface (26) of the plunger housing (5) has two flat, mutually diametrical contact surfaces (29) which are adapted to limit the displacement of the roller (9) in the direction of the axis of rotation (D) ,
Rollenstößelvorrichtung (1) nach einem der vorstehenden Ansprüche 1 bis 5, bei der zumindest ein Lagerschalen¬ teilbereich (15) der Außenmantelfläche (16) der LagerschaleRoller tappet device (1) according to one of the preceding claims 1 to 5, wherein at least one bearing shell ¬ partial region (15) of the outer circumferential surface (16) of the bearing shell
(7) sowie ein jeweiliger Gehäuseteilbereich (25) der Innenmantelfläche (26) des Stößelgehäuses (5) parallel zueinander derart gekrümmt ausgebildet sind, dass ein Drehmoment bezüglich der Längsachse (L) von der Lagerschale(7) and a respective housing part region (25) of the inner circumferential surface (26) of the tappet housing (5) are formed parallel to each other curved such that a torque with respect to the longitudinal axis (L) of the bearing shell
(7) auf das Stößelgehäuse (5) übertragbar ist. (7) is transferable to the plunger housing (5).
Rollenstößelvorrichtung (1) nach Anspruch 6, bei der der zumindest eine Lagerschalenteilbereich (15) sowie der jeweilige Gehäuseteilbereich (25) eben ausgebildet sind. Roller tappet device (1) according to claim 6, wherein the at least one bearing shell part region (15) and the respective housing part region (25) are flat.
Verfahren zur Herstellung einer Rollenstößelvorrichtung (1) für eine Pumpe nach einem der vorstehenden Ansprüche 1 bis 7, bei dem Method of manufacturing a roller tappet device (1) for a pump according to one of the preceding claims 1 to 7, in which
- ein Stößel (3) mit einer Längsachse (L) ,  a plunger (3) with a longitudinal axis (L),
- ein Stößelgehäuse (5) mit einer Innenmantelfläche (26), a plunger housing (5) with an inner circumferential surface (26),
- eine Lagerschale (7) mit einer Außenmantelfläche (16), und- A bearing shell (7) with an outer circumferential surface (16), and
- eine Rolle (9) mit einer Drehachse (D) bereitgestellt werden, wobei - die Lagerschale (7) eine Lagerschalenausnehmung (19) aufweist, in der die Rolle (9) drehbar gelagert wird,- Are provided a roller (9) with a rotation axis (D), wherein - The bearing shell (7) has a Lagerschalenausnehmung (19), in which the roller (9) is rotatably mounted,
- die Lagerschale (7) auf einer der Lagerschalenausnehmung (19) abgewandten Seite einen Zapfen (11) aufweist, der in einem Gehäuselager (21) des Stößelgehäuses (5) aufgenommen wird, wobei die Lagerschale (7) über eine Außenmantelfläche (12) des Zapfens (11) und eine Innenmantelfläche (22) des Gehäuselagers (21) mit dem Stößelgehäuse (5) mittels Pressverband fix gekoppelt wird, und - The bearing shell (7) on one of the Lagerschalenausnehmung (19) facing away from a pin (11) which is received in a housing bearing (21) of the plunger housing (5), wherein the bearing shell (7) via an outer circumferential surface (12) of the Pin (11) and an inner circumferential surface (22) of the housing bearing (21) with the plunger housing (5) is fixedly coupled by means of interference fit, and
- die Rolle (9) an einer Antriebseinrichtung der Pumpe abgestützt wird.  - The roller (9) is supported on a drive device of the pump.
EP15721682.1A 2014-10-15 2015-05-06 Roller tappet device and method for producing a roller tappet device Not-in-force EP3094855B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014220881.5A DE102014220881A1 (en) 2014-10-15 2014-10-15 Roller tappet device and method of manufacturing a roller tappet device
PCT/EP2015/059891 WO2016058712A1 (en) 2014-10-15 2015-05-06 Roller tappet device and method for producing a roller tappet device

Publications (2)

Publication Number Publication Date
EP3094855A1 true EP3094855A1 (en) 2016-11-23
EP3094855B1 EP3094855B1 (en) 2018-07-11

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ID=53175034

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Application Number Title Priority Date Filing Date
EP15721682.1A Not-in-force EP3094855B1 (en) 2014-10-15 2015-05-06 Roller tappet device and method for producing a roller tappet device

Country Status (6)

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US (1) US20170204824A1 (en)
EP (1) EP3094855B1 (en)
KR (1) KR101908832B1 (en)
CN (1) CN106103986B (en)
DE (1) DE102014220881A1 (en)
WO (1) WO2016058712A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019102289B3 (en) * 2019-01-30 2020-03-05 Schaeffler Technologies AG & Co. KG Roller plunger for a fuel pump
DE102019118891A1 (en) * 2019-07-12 2021-01-14 Schaeffler Technologies AG & Co. KG Roller tappet for a high pressure fuel pump

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DE1776119A1 (en) * 1968-09-24 1971-10-07 Orange Gmbh Injection pump
US3822683A (en) * 1972-12-11 1974-07-09 Caterpillar Tractor Co Roller bearing retaining clip
US5566652A (en) * 1995-10-06 1996-10-22 Eaton Corporation Light weight cam follower
SI9600292A (en) * 1996-10-02 1998-04-30 Mag. Manfreda Jurij, Dipl.Ing. Piston assembly of a radial-piston hydraulic engine
WO2004040121A1 (en) * 2002-10-29 2004-05-13 Bosch Automotive Systems Corporation Fuel supply pump and tappet structure body
US20050100466A1 (en) * 2003-01-09 2005-05-12 Nobuo Aoki Fuel supply pump
WO2004063559A1 (en) * 2003-01-09 2004-07-29 Bosch Automotive Systems Corporation Fuel feed pump
JP2004324537A (en) * 2003-04-24 2004-11-18 Bosch Automotive Systems Corp Pump for fuel supply and tappet structure
DE10355027A1 (en) * 2003-11-25 2005-06-23 Robert Bosch Gmbh High-pressure pump, in particular for a fuel injection device of an internal combustion engine
WO2005068823A1 (en) * 2004-01-14 2005-07-28 Bosch Corporation Fuel supply pump
DE102006028348B3 (en) * 2006-06-20 2007-10-31 Siemens Ag Rolling bearing device has locking element arranged so that in cavity of cylinder-shaped element it is coupled with positive locking with regard to axial and rotational direction in regard to center axis of cylinder-shaped element
KR20110013367A (en) * 2008-05-12 2011-02-09 에누티에누 가부시키가이샤 Pump tappet
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DE102009028392B4 (en) * 2009-08-10 2018-05-24 Robert Bosch Gmbh high pressure pump

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Publication number Publication date
EP3094855B1 (en) 2018-07-11
KR20160132985A (en) 2016-11-21
CN106103986A (en) 2016-11-09
DE102014220881A1 (en) 2016-04-21
US20170204824A1 (en) 2017-07-20
KR101908832B1 (en) 2018-10-16
CN106103986B (en) 2017-11-28
WO2016058712A1 (en) 2016-04-21

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