EP1274941B1 - Pompe - Google Patents

Pompe Download PDF

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Publication number
EP1274941B1
EP1274941B1 EP01933600A EP01933600A EP1274941B1 EP 1274941 B1 EP1274941 B1 EP 1274941B1 EP 01933600 A EP01933600 A EP 01933600A EP 01933600 A EP01933600 A EP 01933600A EP 1274941 B1 EP1274941 B1 EP 1274941B1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
rotor
pump
free end
particular according
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
EP01933600A
Other languages
German (de)
English (en)
Other versions
EP1274941A1 (fr
Inventor
Joachim Schreiber
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.)
LuK Fahrzeug Hydraulik GmbH and Co KG
Original Assignee
LuK Fahrzeug Hydraulik GmbH 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
Priority claimed from DE20022348U external-priority patent/DE20022348U1/de
Application filed by LuK Fahrzeug Hydraulik GmbH and Co KG filed Critical LuK Fahrzeug Hydraulik GmbH and Co KG
Publication of EP1274941A1 publication Critical patent/EP1274941A1/fr
Application granted granted Critical
Publication of EP1274941B1 publication Critical patent/EP1274941B1/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F04C2230/603—Centering; Aligning

Definitions

  • the present invention relates to a pump having a pump housing arranged rotor which rotates about a drive shaft and rotatably thereto can be plugged onto the drive shaft.
  • Pumps of the type in question are, for example, as vane or Gear pumps designed and serve to promote a flowable medium, namely of gaseous or liquid substances.
  • the delivery unit of the pump comprises a rotor, which in turn is driven by a pump shaft.
  • the Pump shaft is rotatably supported within the pump housing by means of bearings.
  • the pump shaft is always below as the drive shaft designated.
  • Pumps of the generic type are u.a. for diesel production used in motor vehicles.
  • the rotor does not have its own before mounting the pump to a motor housing Storage on, is only during assembly on the motor housing.belustere drive shaft attached. This results in a problem during assembly or during Assembly of the pump, namely to the effect that the rotor on the drive shaft is istfädeln, with the insertion of the drive shaft, this with the insertion the rotor is not aligned. This is due to an offset of the rotor in the Return stroke due to the not yet mounted shaft. Consequently, here are Special measures required, namely, the drive shaft in the rotor effortlessly to be able to plug in.
  • DE 197 17 295 A1 a fluid machine is known from DE 197 17 295 A1, which can be used both as a pump and as a motor.
  • DE 197 17 295 A1 discloses in concrete the assembly of a pump Internal gear pump, wherein that inner gear by means of a centric bore is connected to the insertable from the side drive shaft. The centering takes place there by the tapered free end of the shaft. More ambitious Measures to favor the centering and thus the assembly are not provided there.
  • the present invention is therefore based on the object, the generic Design and develop pump in such a way that the assembly is easy, fast, safe and can be done without special aids.
  • a generic type pump of the type mentioned is characterized in that the drive shaft is one for threading the rotor onto the rotor Drive shaft serving, has tapered free end and that the free End of the drive shaft is coated, the coating is the stiction reduced between the drive shaft and the rotor.
  • one of the pump according to DE 198 57 560 A1 can do without additional centering means, namely, when you consider the drive shaft itself with an integral centering equip.
  • the drive shaft for threading the rotor on the Drive shaft serving, tapered free end.
  • additional Centering means are therefore not required. Rather, a kind can be Forced centering of drive shaft and rotor when assembling the pump thereby achieve that the drive shaft at the free end of a whole has special design, namely that the drive shaft in the area of the free end rejuvenated.
  • the free end of the drive shaft could be formed like a spike, wherein the generatrices of the surface are tapered with tapered free ends, convex or concave towards the tip. So could the free end of the Drive shaft be conical or frusto-conical shape, taking into account a maximum offset between the axis of rotation of the drive shaft and the central axis of the rotor must be ensured that the tapered free end of the drive shaft just got into the insertion of the rotor and this while on the drive shaft - forced - threads.
  • the rotor has an insertion opening for the drive shaft having.
  • Tapered free end could be the insertion opening limiting wall of the rotor on the outside one on the free end of the drive shaft have approximately matched guide surface.
  • a compulsive threading the rotor on the drive shaft is thereby favored again, especially by this measure, a far-reaching "offset" of drive shaft and rotor is tolerable.
  • Forced centering is also favored by this measure, the guide surface - analogous to the design of the free end of the Drive shaft - may extend in an approximately cone-shaped inward.
  • the the insertion opening The limiting wall of the rotor could be bevelled.
  • the free end of the drive shaft preferably immediately followed by an external toothing, which is inserted in the State of the drive shaft meshes with an internal toothing of the rotor.
  • the outer toothing of the drive shaft could be an undercut and the undercut connect a cylindrical section of the drive shaft.
  • the cylindrical section the drive shaft could have an at least slightly larger diameter than having the outer toothing carrying portion of the drive shaft, whereby the insertion or insertion of the drive shaft in the rotor or threading of the rotor to the drive shaft done without damaging a shaft seal can.
  • the guide surface of the rotor could directly have the internal toothing Follow area so that the insertion process immediately after the forced centering due to the above measures after only a short time Displacement of the drive shaft is completed.
  • Figs. 1 to 3 show during assembly of a pump according to the invention self-centering effect, namely when inserting the drive shaft in the rotor the pump.
  • FIGS. 1 to 3 show a below always referred to as a pump Fuel delivery pump with a two-part pump housing 1 and a therein arranged rotor 2, which is rotationally driven via a drive shaft 3. Im completely assembled state, the rotor 2 is non-rotatably mounted on the drive shaft 3.
  • Figs. 1 to 4 show together the inventive feature, according to which Drive shaft 3 serving for threading the rotor 2 on the drive shaft 3, has tapered free end 4.
  • FIGS. 1 to 3 further show that the free end 4 of the drive shaft 3 is cone-shaped.
  • the free end 4 of the drive shaft 3 is frusto-conical.
  • the figures further clearly show that the positive centering of the rotor 2 opposite the drive shaft 3 is provided a further measure, namely the rotor side.
  • the design of the guide surface 6 is particularly clear from the schematic representation 4, wherein the local guide surface 6 is the tapered free End 4 of the drive shaft 3 is adjusted so far, as well as even so Offset between the axis of rotation 7 of the drive shaft 3 and the central axis 8 of the rotor second an insertion of the free end 4 of the drive shaft 3 in the insertion opening 5 of the Rotor 2 and then forced centering is possible.
  • the figures further show that the external toothing 9 of the drive shaft 3 a Undercut 11 and the undercut 11, a cylindrical portion 12 of the drive shaft. 3 follows.
  • the cylindrical portion 12 of the drive shaft 3 with an at least slightly larger diameter formed as the outer toothing 9 bearing area, so that by inserting or inserting the drive shaft 3 by this measure leaves without damaging a shaft seal.
  • FIGS. 1 to 4 also show in common that the guide surface 6 of the rotor 2 immediately following the internal toothing 10 having region 13 of the rotor 2, so that so far only short distances for centering and reaching a non-positive Attack between the drive shaft 3 and rotor 2 are required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Claims (8)

  1. Pompe avec un rotor disposé dans un carter de pompe, qui est entraíné en rotation par l'intermédiaire d'un arbre d'entraínement et peut en outre être enfoncé fixe en rotation sur l'arbre d'entraínement,
    caractérisée par le fait que l'arbre d'entraínement présente une extrémité libre se rétrécissant servant à enfiler le rotor sur l'arbre d'entraínement et que l'extrémité libre de l'arbre d'entraínement est enduite, l'enduction diminuant le frottement par adhérence entre l'arbre d'entraínement et le rotor.
  2. Pompe, en particulier selon la revendication 1,
    caractérisée par le fait que l'extrémité libre de l'arbre d'entraínement est réalisée en forme de dôme ou en forme de cône ou en forme de tronc de cône.
  3. Pompe, en particulier selon la revendication 1 ou 2, le rotor présentant une ouverture d'enfoncement pour l'arbre d'entraínement,
    caractérisée par le fait que la paroi du rotor limitant l'ouverture d'enfoncement présente du côté extérieur une surface de guidage à peu près adaptée à l'extrémité libre de l'arbre d'entraínement, la surface de guidage pouvant s'étendre à peu près en forme de cône.
  4. Pompe, en particulier selon la revendication 3,
    caractérisée par le fait que la paroi du rotor limitant l'ouverture d'enfoncement est sertie extérieurement.
  5. Pompe, en particulier selon la revendication 3 ou 4,
    caractérisée par le fait que la surface de guidage ou respectivement le chanfrein est enduit.
  6. Pompe, en particulier selon l'une des revendications 1 à 5,
    caractérisée par le fait qu'une denture extérieure, qui est en prise avec une denture intérieure du rotor à l'état enfoncé de l'arbre d'entraínement, suit l'extrémité libre de l'arbre d'entraínement, de préférence directement.
  7. Pompe, en particulier selon la revendication 6,
    caractérisée par le fait qu'un dégagement par rainure suit la denture extérieure de l'arbre d'entraínement et une section cylindrique de l'arbre d'entraínement suit le dégagement par rainure, la section cylindrique de l'arbre d'entraínement présentant un diamètre au moins légèrement supérieur à celui de la zone portant la denture extérieure.
  8. Pompe, en particulier selon l'une des revendications 3 à 7,
    caractérisée par le fait que la surface de guidage du rotor suit directement la zone présentant la denture intérieure.
EP01933600A 2000-04-18 2001-04-12 Pompe Expired - Lifetime EP1274941B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20022348U DE20022348U1 (de) 2000-04-18 2000-04-18 Pumpe
DE20022348U 2000-04-18
PCT/DE2001/001436 WO2001079700A1 (fr) 2000-04-18 2001-04-12 Pompe

Publications (2)

Publication Number Publication Date
EP1274941A1 EP1274941A1 (fr) 2003-01-15
EP1274941B1 true EP1274941B1 (fr) 2005-11-09

Family

ID=7950751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01933600A Expired - Lifetime EP1274941B1 (fr) 2000-04-18 2001-04-12 Pompe

Country Status (4)

Country Link
EP (1) EP1274941B1 (fr)
AU (1) AU2001260058A1 (fr)
DE (2) DE50108005D1 (fr)
WO (1) WO2001079700A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118720A1 (de) * 2001-04-12 2002-10-17 Luk Fahrzeug Hydraulik Pumpe
GB2394007A (en) * 2002-10-10 2004-04-14 Compair Uk Ltd Oil sealed rotary vane compressor
DE102011080048A1 (de) * 2011-07-28 2013-01-31 Zf Friedrichshafen Ag Getriebepumpe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620705A1 (de) * 1986-06-20 1987-12-23 Schwaebische Huettenwerke Gmbh Innenzahnradpumpe als schmieroelpumpe
DE3923019A1 (de) * 1989-07-12 1991-01-17 Bayerische Motoren Werke Ag Pumpenanordnung an einer maschine, insbesondere schmieroelpumpe an einer brennkraftmaschine
DE19717295C2 (de) * 1997-04-24 1999-09-23 Danfoss As Fluid-Maschine
DE19857560A1 (de) 1997-12-23 1999-06-24 Luk Fahrzeug Hydraulik Pumpe ohne eigene Lagerung

Also Published As

Publication number Publication date
DE10191465D2 (de) 2002-09-05
AU2001260058A1 (en) 2001-10-30
EP1274941A1 (fr) 2003-01-15
DE50108005D1 (de) 2005-12-15
WO2001079700A1 (fr) 2001-10-25

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