EP1049874B1 - Pompe a pistons axiaux - Google Patents

Pompe a pistons axiaux Download PDF

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Publication number
EP1049874B1
EP1049874B1 EP99903678A EP99903678A EP1049874B1 EP 1049874 B1 EP1049874 B1 EP 1049874B1 EP 99903678 A EP99903678 A EP 99903678A EP 99903678 A EP99903678 A EP 99903678A EP 1049874 B1 EP1049874 B1 EP 1049874B1
Authority
EP
European Patent Office
Prior art keywords
swash plate
axial piston
pump housing
shaft
piston pump
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.)
Expired - Lifetime
Application number
EP99903678A
Other languages
German (de)
English (en)
Other versions
EP1049874A1 (fr
Inventor
Peter Hoffmann
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 Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
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 Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1049874A1 publication Critical patent/EP1049874A1/fr
Application granted granted Critical
Publication of EP1049874B1 publication Critical patent/EP1049874B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders

Definitions

  • the invention relates to an axial piston pump with a Pump housing, a motor-driven shaft, one with the shaft rotatably connected swash plate and one Number of pistons that swings back and forth using the swash plate can be moved here, as described, for example, in DE-B-1 234 529 or DE 44 45 522 A1.
  • Such axial piston pumps are used, among other things.
  • electronic Brake systems for motor vehicles used with regulated blocking prevention devices individual wheels when braking, to prevent the Spinning the driven wheels and others Devices for active vehicle stabilization can be equipped.
  • Devices for active vehicle stabilization can be equipped.
  • the functioning of such braking systems depends on the fact that all components of the system with regard to the expected static and dynamic loads on the one hand, robust and designed to be as wear-resistant as possible but also the demands for space and Weight saving as well as economical Manufacturing meet.
  • a central bore is provided in a generic axial piston pump in the pump housing, through which an extension of the shaft extends, at the end of which the swash plate is arranged outside the pump housing.
  • the swash plate is advantageously arranged in a cover, which can be designed as a valve block or electronics box of an electronic brake system.
  • the pump pistons are advantageously arranged between the swash plate and the pump drive motor. It is also proposed that the pistons are clamped between the swash plate and the inner end of the bores by means of the return springs.
  • a shaft bearing is expediently axially supported on the surface of a stepped bore of the pump housing, which is opposite the inner end of the bores.
  • the proposal according to the invention has the great advantage that the frictional connection over the extension stressed in tension the shaft takes place and from the housing only the part between Bearing and inner end of the holes in the Main direction of force is subjected to pressure. Furthermore becomes the frictional connection over the bearing under pressure and the pistons also under pressure and Return springs as well as the stressed on bending Swashplate closed.
  • the housing has essentially only absorb lateral forces, i.e. the components that not parallel to the axis of the shaft or the bores are directed.
  • the required larger space requirement for the holes in radial direction doesn't matter because that Pump housing for the attachment of the drive motor usually larger in any case transversely to the shaft axis must be carried out as it is for the accommodation of the Bores for the pistons are required. Besides, will the larger space requirement in the radial direction by one less space requirement of the pump housing in the axial Direction compensated because the channels for the inlet and Removal of the medium is no longer arranged on the edge are, but in the middle of the case and because only in the central part that of the bearing height, the piston length and the thickness of the swash plate including the bearing dependent full height of the pump housing can be realized got to.
  • the motor-driven shaft 2 has an extension 9, on the end of which a swash plate 3 with an axial bearing 13 is rotatably attached.
  • a bearing 6 is arranged between the shaft 2 and the pump housing 1, via which radial and axial forces can be transmitted from the shaft 2 to the pump housing 1.
  • holes 7 for pistons 4 and return springs 5, preferably rounded at the front are arranged parallel to the shaft axis, the inner ends 10 of which face a surface 11 of the stepped bore 12 formed in the housing 1 for the bearing 6.
  • the material area of the pump housing 1 lying between the inner ends 10 of the bores 7 and the surface 11 is the only part of the pump housing which has to absorb forces in the main direction of attack parallel to the shaft axis. Adjacent to the inner ends 10, the bores 7 are connected to channels 14 and 15 formed in the pump housing 1 for the supply and discharge of the delivery medium.
  • the extension 9 of the shaft 2 is, according to the invention, passed through a central bore 8 in the pump housing 1, which is closed by a cover 16 which overlaps the swash plate 3 and which does not have to be part of the pump housing.
  • the cover is designed as a valve block and / or electronics box of an electronically controlled braking system.
  • the pistons are therefore preferably arranged between the swash plate 3 and the motor (not shown) driving the pump 1. Opposite the cover 16, a receiving area 17 for the arrangement of the drive motor for the shaft 2 is provided in the pump housing 1.
  • the pump housing 1 can be flatter overall be held because only the central area is the full, by the dimensions of the bearing 6, the return springs 5, the piston 4 and the swash plate 3 due to design must have full height.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Claims (7)

  1. Pompe à pistons axiaux, avec un carter de pompe (1), un arbre (2) pouvant être entraíné par moteur, un plateau oscillant (3) lié en rotation à l'arbre (2) et un certain nombre de pistons (4) qui peuvent être déplacés en va-et-vient au moyen du plateau oscillant (3), l'arbre (2) s'étendant à travers le carter de pompe (1) et le plateau oscillant (3) étant disposé en dehors du carter de pompe (1) dans un élément de recouvrement (16), caractérisée en ce que l'élément de recouvrement (16) est conçu comme bloc de distribution et/ou comme boítier électronique d'un système de freinage électronique.
  2. Pompe à pistons axiaux selon la revendication 1, caractérisée en ce que les pistons (4) sont disposés entre le plateau oscillant (3) et le moteur qui entraíne l'arbre (2).
  3. Pompe à pistons axiaux selon la revendication 1, caractérisée en ce que les pistons (4) sont montés au moyen de ressorts de rappel (5) entre le plateau oscillant (3) et l'extrémité intérieure (10) de perçages (7) qui reçoivent les pistons (4).
  4. Pompe à pistons axiaux selon la revendication 3, caractérisée en ce qu'un palier (6) de l'arbre (2) est soutenu axialement sur une face (11) d'un perçage échelonné (12) du carter de pompe (1) qui fait face à l'extrémité intérieure (10) des perçages (7).
  5. Pompe à pistons axiaux selon l'une des revendications précédentes, caractérisée en ce qu'un palier à charge axiale (13) est disposé entre le plateau oscillant (3) et les pistons (4).
  6. Pompe à pistons axiaux selon la revendication 5, caractérisée en ce que les extrémités des pistons (4) qui sont tournées vers le palier à charge axiale (13) sont arrondies.
  7. Pompe à pistons axiaux selon l'une des revendications précédentes, caractérisée en ce que les perçages (7) communiquent avec des canaux (14, 15) formés dans le carter de pompe (1) pour l'apport et l'évacuation du fluide refoulé.
EP99903678A 1998-01-30 1999-01-26 Pompe a pistons axiaux Expired - Lifetime EP1049874B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19803533A DE19803533A1 (de) 1998-01-30 1998-01-30 Axialkolbenpumpe
DE19803533 1998-01-30
PCT/EP1999/000448 WO1999039100A1 (fr) 1998-01-30 1999-01-26 Pompe a pistons axiaux

Publications (2)

Publication Number Publication Date
EP1049874A1 EP1049874A1 (fr) 2000-11-08
EP1049874B1 true EP1049874B1 (fr) 2003-05-02

Family

ID=7856093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99903678A Expired - Lifetime EP1049874B1 (fr) 1998-01-30 1999-01-26 Pompe a pistons axiaux

Country Status (4)

Country Link
EP (1) EP1049874B1 (fr)
JP (1) JP2002502007A (fr)
DE (2) DE19803533A1 (fr)
WO (1) WO1999039100A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008014974B4 (de) * 2008-03-19 2016-06-23 Schaeffler Technologies AG & Co. KG Taumellagerung und Verfahren zu deren Herstellung
JP4740983B2 (ja) * 2008-06-18 2011-08-03 三菱電機株式会社 燃料供給装置
CN102966504B (zh) * 2012-12-10 2015-08-12 西安航空动力控制科技有限公司 带有挡板式单向活门的无滑靴无配油盘的轴向柱塞泵

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1877285A (en) * 1931-10-01 1932-09-13 Eckels Engineering Corp Swash plate
US2998827A (en) * 1958-04-14 1961-09-05 Ernest E Cook Valve construction for fluid pressure pump and the like
DE1234529B (de) * 1963-11-13 1967-02-16 Teves Kg Alfred Axialwaelzlager der Kopf-Taumelscheibe einer Axialkolbenpumpe
DE1453532A1 (de) * 1964-04-07 1969-09-25 Walter Hunger Von Hand und elektro-motorisch zu betaetigende hydraulische Stuetzvorrichtungen fuerKraftfahrzeuge
FR1407267A (fr) * 1964-06-20 1965-07-30 Sarl Rech S Etudes Production Pompe hydraulique perfectionnée, à barillet et à paliers fluides
JPS5011086B1 (fr) * 1967-06-14 1975-04-26
DE3347307A1 (de) * 1983-12-28 1985-07-11 Speck-Kolbenpumpen-Fabrik Otto Speck Kg, 8192 Geretsried Plungerpumpe
DE4203619C2 (de) * 1992-02-07 1996-07-25 Rexroth Mannesmann Gmbh Hydrauliksystem
DE4303205A1 (de) * 1993-02-04 1994-08-11 Teves Gmbh Alfred Aus Strangmaterial gefertigte Pumpe mit Ventilblock, insbesondere für ein geregeltes Bremssystem
DE4445522C2 (de) 1994-12-20 1998-05-14 Kaercher Gmbh & Co Alfred Kolbenpumpe für ein Hochdruckreinigungsgerät

Also Published As

Publication number Publication date
DE19803533A1 (de) 1999-08-05
WO1999039100A1 (fr) 1999-08-05
JP2002502007A (ja) 2002-01-22
EP1049874A1 (fr) 2000-11-08
DE59905314D1 (de) 2003-06-05

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