EP1274941A1 - Pompe - Google Patents

Pompe

Info

Publication number
EP1274941A1
EP1274941A1 EP01933600A EP01933600A EP1274941A1 EP 1274941 A1 EP1274941 A1 EP 1274941A1 EP 01933600 A EP01933600 A EP 01933600A EP 01933600 A EP01933600 A EP 01933600A EP 1274941 A1 EP1274941 A1 EP 1274941A1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
pump
rotor
particular according
free end
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
EP01933600A
Other languages
German (de)
English (en)
Other versions
EP1274941B1 (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

Links

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 treads of the radial shaft sealing ring on the shaft also require additional chrome-plated surfaces, which leads to considerably increased costs.
  • a generic pump of the type mentioned at the outset is characterized in that the drive shaft has a tapered free end which is used to thread the rotor onto the drive shaft.
  • the rotor has an insertion opening for the drive shaft.
  • the wall of the rotor delimiting the insertion opening on the outside could have a guide surface which is approximately matched to the free end of the drive shaft.
  • a forced threading of the rotor onto the drive shaft is further favored, especially since this measure tolerates a more extensive "offset" of the drive shaft and rotor.
  • a positive centering is also favored by this measure, the guide surface - analogous to the design of the free end of the Drive shaft - can run approximately in a conical shape to the inside.
  • the wall of the rotor delimiting the insertion opening could be chamfered.
  • the guide surface or chamfer of the insertion opening could also be coated, wherein the coatings of both components should be coordinated with one another to reduce the forces required when inserting the drive shaft.
  • Fig. 3 shows the object of Fig. 1, the due to the insertion process
  • Fig. 4 in a schematic side view, detached, one on the free
  • End tapered drive shaft and a rotor with maximum offset before the self-centering insertion process end tapered drive shaft and a rotor with maximum offset before the self-centering insertion process
  • Fig. 5 shows a schematic view of an embodiment of a shaft seal ring also according to the invention.
  • FIGS. 1 to 3 show a fuel feed pump, which is always referred to below as a pump, with a two-part pump housing 1 and a rotor 2 arranged therein, which is driven in rotation via a drive shaft 3.
  • the rotor 2 is attached to the drive shaft 3 in a rotationally fixed manner.
  • the figures also clearly show that a further measure is provided for the positive centering of the rotor 2 relative to the drive shaft 3, namely on the rotor side.
  • the insertion opening 5 of the rotor 2 or the wall of the rotor 2 delimiting the insertion opening 5 has on the outside a guide surface 6 which is approximately matched to the free end 4 of the drive shaft 3.
  • the design of the guide surface 6 can be seen particularly clearly from the schematic illustration in FIG.
  • the figures further show that the external toothing 9 of the drive shaft 3 is followed by an undercut 11 and the undercut 11 is followed by a cylindrical section 12 of the drive shaft 3.
  • the cylindrical section 12 of the drive shaft 3 is designed with an at least slightly larger diameter than the area bearing the external toothing 9, so that this measure allows the drive shaft 3 to be inserted or inserted without damaging a shaft seal.
  • 1 to 4 also show together that the guide surface 6 of the rotor 2 is immediately followed by the area 13 of the rotor 2 which has the internal toothing 10, so that even in this respect only short distances for centering and achieving a non-positive attack between the drive shaft 3 and the rotor 2 required are.
  • the pump also has a new shaft sealing ring according to the invention, which is shown schematically in FIG. 5.
  • the shaft sealing ring consists of a ring 22 made of PTFE (Teflon, registered trademark) and has a circumferential groove 26 in which an O-ring 21 is arranged.
  • the shaft sealing ring presses against the surface 27 of the shaft 3 with an arc-shaped sealing lip 28.
  • the shaft sealing ring is supported against the housing 20 and additionally provides a good static seal by means of the O-ring 21.
  • the O-ring 21 also serves to secure the shaft sealing ring due to its pretension and resilient pressing force.

Landscapes

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

Abstract

L'invention concerne une pompe pourvue d'un rotor qui est logé dans un corps de pompe et qui est entraîné en rotation par l'intermédiaire d'un arbre d'entraînement et est en outre monté solidaire en rotation sur l'arbre d'entraînement. La pompe selon l'invention est caractérisée en ce que l'arbre d'entraînement présente une extrémité libre conique servant à enfiler le rotor sur l'arbre d'entraînement.
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 true EP1274941A1 (fr) 2003-01-15
EP1274941B1 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) DE10191465D2 (fr)
WO (1) WO2001079700A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013883A3 (fr) * 2011-07-28 2013-08-22 Zf Friedrichshafen Ag Pompe à engrenage

Families Citing this family (2)

* 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

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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0179700A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013883A3 (fr) * 2011-07-28 2013-08-22 Zf Friedrichshafen Ag Pompe à engrenage

Also Published As

Publication number Publication date
AU2001260058A1 (en) 2001-10-30
DE50108005D1 (de) 2005-12-15
WO2001079700A1 (fr) 2001-10-25
DE10191465D2 (de) 2002-09-05
EP1274941B1 (fr) 2005-11-09

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