EP2951435B1 - Poussoir - Google Patents

Poussoir Download PDF

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Publication number
EP2951435B1
EP2951435B1 EP13823929.8A EP13823929A EP2951435B1 EP 2951435 B1 EP2951435 B1 EP 2951435B1 EP 13823929 A EP13823929 A EP 13823929A EP 2951435 B1 EP2951435 B1 EP 2951435B1
Authority
EP
European Patent Office
Prior art keywords
housing
bridge piece
plunger
ring
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.)
Not-in-force
Application number
EP13823929.8A
Other languages
German (de)
English (en)
Other versions
EP2951435A1 (fr
Inventor
Norbert Geyer
Stefan Dorn
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
Publication of EP2951435A1 publication Critical patent/EP2951435A1/fr
Application granted granted Critical
Publication of EP2951435B1 publication Critical patent/EP2951435B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B1/0408—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
    • 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
    • F04B1/0435—Arrangements for disconnecting the pistons from the actuated cam
    • 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
    • F04B1/0439—Supporting or guiding means for the pistons

Definitions

  • the invention relates to a plunger, in particular for a pump or a compressor, with a tube-like housing, in the drive-side annular end are two diametrically opposed by an outer shell of the housing flax, in which a roll carrying a bolt is mounted, wherein an inner sheath of Housing, axially below the roller, is penetrated by a separate bridge piece whose output side end acts as a plant for a follower part and which bridge piece in the direction of the drive side annular end abuts the undersides of the flax and fixed in the direction of a driven side annular end of the housing by a on the inner shell Ring is held.
  • Such a plunger goes out of the DE 102012211113.1 or US2008 / 190237 A1 out. It is suitable for acting on a pump piston of a fuel injection pump. How out FIG. 1 can be seen, a holder of the bridge piece takes place axially out of the housing via a snap ring, which is held on the housing radially projecting lugs.
  • the disadvantage is that an assembly of the bridge piece on the drive-side annular end must be very targeted and accurate, so as not to come into collision with the noses. Furthermore, limited by the projecting components (lugs, snap ring) of the radial space in the lower housing area, so that under certain circumstances not enough space for a on the output side end of the bridge piece supporting return spring o. The like. Is given.
  • the noses also weaken the case. Possibly. it comes in their area to distortion on the outer surface of the housing.
  • the plunger should be easy to assemble and an enlarged space below its bridge piece have.
  • this object is achieved in that the ring is a broken spring band and in a complementary groove of the inner shell of the housing, in this radially not or only slightly protruding from the groove, sitting, from a top of the ring at least two tabs radially inwardly stand on which the bridge piece is fixed in the direction of the output side annular end.
  • the ring is intended for a sheet metal or plastic ring. Possibly. can be applied in the separating gap and a spring spreading the ring spring means.
  • the space below the bridge piece thus in the direction of the output side annular end of the housing, is designed so that no noses o. The like. More radially extend from the inner surface of the housing. However, necessary chamfers are not covered.
  • the bridge piece can first be fed relatively freely to the housing (i.i., head-over-assembly) until its twist orientation becomes necessary for engagement with the bottoms of the flax. It is more important in this context, however, that the unrestricted space larger return springs can be installed so that higher forces / speeds are possible.
  • a preferred development of the invention relates to a plunger, which is connected to a pump piston via a spring plate.
  • a plunger which is connected to a pump piston via a spring plate.
  • the tabs of the ring advantageously in a complementary annular recess of a ring portion of the spring plate. The latter holds the ring during operation of the ram.
  • the spring plate from its outer edge outgoing breakthroughs. These allow a good passage of eg. Diesel fuel / lubricant or prevent "pumping" of the plunger.
  • the breakthroughs can also be outside of Be introduced outside. In addition, you help to save ram mass.
  • Punched bridge piece allows passage to eg. Diesel fuel / lubricant side of the bridge piece along and good handling and easy assembly of the bridge piece in mass production.
  • a nose of the bridge piece protrude from a crosspiece, which may alternatively also be present as a separate component.
  • the nose is guided through an example. Stamped opening of the housing, so that the plunger has a simple design and captive anti-rotation.
  • the bridge piece is available as a multifunction part.
  • Crossstones of the bridge piece have according to the claims a smoothened to the inner surface of the housing course, which comes to a simple assembly and helps to avoid edge contact compared to a bow-like design.
  • the bridge piece as sheet metal stamping with a comparatively large thickness. This measure helps to keep manufacturing costs low. Possibly.
  • the bridge piece can also be flared or urgeformt.
  • the proposed tappet should be used for at least indirectly acting on a pump piston of a fuel injection pump of a quality- or quantity-controlled internal combustion engine use.
  • a valve train of an internal combustion engine in an axial or radial piston compressor or in a respective pump is considered.
  • a plunger 1 for a high-pressure fuel pump This consists (s. Fig. 1, 2 . 6, 7 ) From a thin-walled housing 2 made of sheet steel. In a drive-side annular end 3 of the housing 2 are two of an outer shell 4 of the housing 2 indented flax 5 diametrically opposite, the good Fig. 6 are recognizable. In the flax 5 a roller 6 bearing bolt 7 is mounted.
  • An inner jacket 8 of the housing 2 is projected axially below the roller 6 from a separate, beam-like bridge piece 9 (s. Fig. 1, 2 . 7 ), with its output-side end 10 is designed as a pump piston plunger follower part 11 in contact.
  • the bridge piece 9 is located in the direction of the drive-side annular end 3 on lower sides 12 of the flax 5 (s. Fig. 1 . 7 ).
  • a driven-side annular end 13 of the housing 2 whose play-free mounting is effected by a ring 14 fixed to the inner casing 8 (see also FIG Fig. 5 ), which is a blasted feather band.
  • the ring 14 is seated in a circumferential groove 15 of the inner shell 8 of the housing 2 and does not protrude into the plunger interior.
  • Outgoing pump piston 11 is held by a spring plate 18 made of sheet metal on the output-side end 10 of the bridge piece 9 so that the pump piston 11 can perform relative to the plunger 1 a lateral evasive movement.
  • the spring plate 18 is located with an outgoing from its outer edge 19 ring portion 20 on the output-side end 10 of the bridge piece 9 (see also Fig. 4 ).
  • the aforementioned bent tabs 17 sit in a ring recess 20 in a top 21 of the annular portion 20 of the spring plate 18th
  • FIG. 3 also shows that the spring plate 18, starting from the outer edge 22, with openings 23 for a media passage (oil, fuel) is provided.
  • Fig. 7 protrudes from a cross-beam 24 of the bridge piece 9 a nose 25 away. This extends through a shirt recess 27 in the housing 2 and serves to prevent rotation of the plunger 1 with respect to its leadership in the fuel pump.
  • the shirt recess 27 is based on an upper crossbar 28 of a window 29 in the housing 2, which window 29 is formed by one of the indented flax 5 in the housing 2.
  • Both cross-braces 24, 26 of the bridge piece 9 are as out FIG. 7 it can be seen with a radius of the inner shell 8 of the housing 2 provided similar radius and extend immediately in front of the inner shell 8 of the housing. 2

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (8)

  1. Poussoir (1), en particulier pour une pompe ou un compresseur, comprenant un boîtier tubulaire (2) au niveau de la partie frontale annulaire côté entraînement (3) duquel deux méplats (5) en retrait par rapport à une enveloppe extérieure (4) du boîtier (2) sont diamétralement opposés, dans lesquels méplats est supporté un boulon (7) portant un rouleau (6), une enveloppe intérieure (8) du boîtier (2), axialement en dessous du rouleau (6) étant traversée par une pièce de pont séparée (9) dont la partie frontale (10) côté sortie sert d'appui pour une pièce suiveuse de poussoir (11) et laquelle pièce de pont (9) s'appliquant dans la direction de la partie frontale annulaire côté entraînement (3) contre des côtés inférieurs (12) des méplats (5) et étant retenue dans la direction d'une partie frontale annulaire côté sortie (13) du boîtier (2) par une bague (14) fixée à l'enveloppe intérieure (8), caractérisé en ce que la bague (14) est une bande à ressort fendue et repose dans une rainure complémentaire (15) de l'enveloppe intérieure (8) du boîtier (2), de manière à pénétrer dans celui-ci radialement sans sortir de la rainure (15), au moins deux pattes (17) faisant saillie radialement vers l'intérieur depuis un côté supérieur (16) de la bague (14), la pièce de pont (9) étant fixée sur lesdites pattes dans la direction de la partie frontale annulaire côté sortie (13).
  2. Poussoir selon la revendication 1, qui forme un module avec la pièce suiveuse de poussoir, caractérisé en ce que la pièce suiveuse de poussoir (11) est un piston de pompe, qui est retenu par une coupelle de ressort (18) contre la partie frontale côté sortie (10) de la pièce de pont (9), la coupelle de ressort (18) s'appliquant par une région annulaire (20) partant de son bord extérieur (19) contre la partie frontale côté sortie (10) de la pièce de pont (9) et les pattes (17) reposant dans des cavités complémentaires ou dans un évidement annulaire (20) dans un côté supérieur (21) de la région annulaire (20) de la coupelle de ressort (18).
  3. Poussoir selon la revendication 2, caractérisé en ce que la coupelle de ressort (18), partant de son bord extérieur (22), est pourvue d'orifices (23) pour un passage de fluide.
  4. Poussoir selon la revendication 1, caractérisé en ce que la pièce de pont (9) est retenue par la bague (14) axialement sans jeu dans le boîtier (2).
  5. Poussoir selon la revendication 1, caractérisé en ce que la pièce de pont (9) est réalisée sous forme de poutre dont une partie frontale transversale (24) munie d'un ergot (25) traverse le boîtier (2) pour réaliser une fixation en rotation du poussoir, ses deux parties frontales transversales (24, 26) soit coupant le boîtier (2) en forme de corde d'arc soit s'étendant avec un rayon au moins approximativement égal à un rayon de l'enveloppe intérieure (8) du boîtier (2) directement avant ou contre l'enveloppe intérieure (8).
  6. Poussoir selon la revendication 5, caractérisé en ce que l'ergot (25) fait saillie d'une seule pièce depuis la pièce de pont (9), l'évidement de jupe (27) nécessaire à celui-ci partant d'une poutre transversale supérieure (28) d'une fenêtre (29) dans le boîtier (2), laquelle fenêtre (29) est formée par l'un des méplats renfoncés (5) dans le boîtier (2).
  7. Poussoir selon la revendication 1, caractérisé en ce que l'enveloppe intérieure (8) du boîtier (2), en dessous de la poutre transversale (28), ne présente aucun étagement et aucune saillie à l'exception de la rainure (15) pour la bague (14).
  8. Poussoir selon la revendication 1, caractérisé en ce que la pièce de pont (9) est réalisée sous forme de pièce de tôle estampée.
EP13823929.8A 2013-01-29 2013-11-18 Poussoir Not-in-force EP2951435B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013201335.3A DE102013201335A1 (de) 2013-01-29 2013-01-29 Stößel
PCT/DE2013/200304 WO2014117762A1 (fr) 2013-01-29 2013-11-18 Poussoir

Publications (2)

Publication Number Publication Date
EP2951435A1 EP2951435A1 (fr) 2015-12-09
EP2951435B1 true EP2951435B1 (fr) 2017-02-01

Family

ID=49999654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13823929.8A Not-in-force EP2951435B1 (fr) 2013-01-29 2013-11-18 Poussoir

Country Status (4)

Country Link
US (1) US9410518B2 (fr)
EP (1) EP2951435B1 (fr)
DE (1) DE102013201335A1 (fr)
WO (1) WO2014117762A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020104313B3 (de) * 2020-02-19 2021-01-28 Schaeffler Technologies AG & Co. KG Stößel zur Beaufschlagung eines Pumpenkolbens einer Kraftstoffhochdruckpumpe

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3173590B1 (fr) * 2015-11-24 2018-06-20 Aktiebolaget SKF Dispositif de galet de came avec rondelle
EP3443205B1 (fr) * 2016-04-15 2020-03-04 Koyo Bearings North America LLC Poussoir pourvu d'une coupelle interne reçue sur une palette
JP7022380B2 (ja) * 2018-01-31 2022-02-18 いすゞ自動車株式会社 燃料ポンプ組付構造
US11143059B2 (en) 2019-10-03 2021-10-12 Koyo Bearings North America Llc Tappet assembly with unground outer cup
US11149593B2 (en) 2019-10-03 2021-10-19 Koyo Bearings North America Llc Tappet assembly with formed anti-rotation alignment device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006028348B3 (de) * 2006-06-20 2007-10-31 Siemens Ag Rollenlagerungsvorrichtung
JP5303468B2 (ja) * 2006-12-05 2013-10-02 シャエフラー カーゲー 特に内燃機関の燃料ポンプのためのメカニカルタペット
US7793583B2 (en) * 2006-12-06 2010-09-14 Schaeffler Kg Mechanical tappet in particular for a fuel pump of an internal combustion engine
DE102006059716A1 (de) * 2006-12-18 2008-06-26 Mahle International Gmbh Verdrehgesicherter Stößel eines Ventiltriebes
DE102012202568B4 (de) * 2012-02-20 2021-12-23 Schaeffler Technologies AG & Co. KG Rollenstößel mit Halterungen für einen gestuften Bolzen
DE102012210176A1 (de) * 2012-06-18 2013-12-19 Schaeffler Technologies AG & Co. KG Stößel
DE102012211113A1 (de) 2012-06-28 2014-01-02 Schaeffler Technologies AG & Co. KG Stößel
DE102012211529A1 (de) * 2012-07-03 2014-01-09 Schaeffler Technologies AG & Co. KG Anordnung mit einem Federteller zur Abstützung zumindest einer Rückstellfeder
DE102012211852A1 (de) * 2012-07-06 2014-01-09 Schaeffler Technologies AG & Co. KG Stößel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020104313B3 (de) * 2020-02-19 2021-01-28 Schaeffler Technologies AG & Co. KG Stößel zur Beaufschlagung eines Pumpenkolbens einer Kraftstoffhochdruckpumpe
WO2021164807A1 (fr) 2020-02-19 2021-08-26 Schaeffler Technologies AG & Co. KG Poussoir destiné à agir sur un piston de pompe d'une pompe à carburant haute pression
US11913415B2 (en) 2020-02-19 2024-02-27 Schaeffler Technologies AG & Co. KG Tappet for acting on a pump piston of a high-pressure fuel pump

Also Published As

Publication number Publication date
US9410518B2 (en) 2016-08-09
EP2951435A1 (fr) 2015-12-09
DE102013201335A1 (de) 2014-07-31
US20150361937A1 (en) 2015-12-17
WO2014117762A1 (fr) 2014-08-07

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