EP0860610A1 - Machine à engrenages internes, en particulier pompe à engrenages internes - Google Patents

Machine à engrenages internes, en particulier pompe à engrenages internes Download PDF

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Publication number
EP0860610A1
EP0860610A1 EP98102767A EP98102767A EP0860610A1 EP 0860610 A1 EP0860610 A1 EP 0860610A1 EP 98102767 A EP98102767 A EP 98102767A EP 98102767 A EP98102767 A EP 98102767A EP 0860610 A1 EP0860610 A1 EP 0860610A1
Authority
EP
European Patent Office
Prior art keywords
filler
spring
internal gear
housing
machine 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.)
Ceased
Application number
EP98102767A
Other languages
German (de)
English (en)
Inventor
Stefan Dipl.-Ing. Bellemann (Fh)
Otto Eckerle
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.)
Eckerle Industrie Elektronik GmbH
Original Assignee
Eckerle Industrie Elektronik 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 Eckerle Industrie Elektronik GmbH filed Critical Eckerle Industrie Elektronik GmbH
Publication of EP0860610A1 publication Critical patent/EP0860610A1/fr
Ceased 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19647—Parallel axes or shafts

Definitions

  • the machine concerns an internal gear machine, in particular internal gear pump, with the features according to Preamble of claim 1.
  • the housed in the interface space of the filler Leaf spring is inevitably very small and must therefore be included high precision manufactured and built to a reasonably exactly predetermined spring force on the Exercise sealing roller. This is complex and therefore expensive and depending on the coincidence of the tolerance dimensions of the Leaf spring and the interface space can still be a Fluctuation of the spring force exerted on the sealing roller cannot be avoided.
  • the object of the invention is therefore a To create internal gear machine of the type described, the with regard to the spring arrangement and training Actuation of the respectively assigned sealing roller is simpler and therefore less expensive and also a simple fine-tuning of the spring load allowed.
  • the Filler parts with respect to one containing the pinion axis Radial plane shaped symmetrically and accordingly are symmetrically arranged partitions spring-loaded sealing rollers added. To match that also symmetrically arranged free spaces for accommodation the spring ends.
  • the filler pin is either its bearing bore correspondingly cylindrical or has a cheaper design essentially one square cross-section, chamfered on the edges is. The chamfers result in the rotatable bearing in the assigned housing bore.
  • the running group shown in Fig. 1 Internal gear pump according to the invention consists essentially from a ring gear 1, one meshing with the ring gear 1 Pinion 2 and one in the space between the ring gear 1st and the pinion 2 arranged filler, the whole with 3 is designated.
  • the ring gear 1 is conventional stored in a circumferential housing 4, the axial Housing parts sealing on the axial surfaces of ring gear 1, Pinion 2 and filler 3 are in contact. Because the corresponding Structure is well known, no one is needed here single detailed explanation thereof (see. DE-A 43 36 966).
  • the filler 3 is approximated by a Circumferential dividing surface in two Filler pieces 30, 31 divided, of which the radially inner Filler piece 30 on the tooth tips of the pinion 2 and that radially outer filler part 31 on the tooth tips of the Ring gear 1 is applied.
  • the filler 3 and thus its Filler piece parts 30, 31 are symmetrical to the axis of the pinion 2 containing radial plane A and form symmetrically arranged, identically designed Partition space 32.
  • the filler parts 30, 31 In the area of each part space 32 the filler parts 30, 31 each have an inclined surface 34, 35, which are wedge-shaped to each other and to the Indicate plane of symmetry A.
  • a sealing roller 36 On the inclined surfaces 34, 35 is in each case a sealing roller 36, which by a hairpin-shaped spring 37 on the inclined surfaces 34, 35 is pressed.
  • the hairpin-shaped spring 37 consists of a correspondingly curved strips of flat material. Your Spring legs are approximately axially parallel to the axis of the Pinion 2 and the ring gear 1 directed and lie on the one hand on the sealing roller 36, on the other hand on one Shoulder 38 of the radially outer filler part 31. The Shoulder 38 thus forms a for the spring 37 Support surface in the interface area 32. Das hairpin-shaped curved end 39 of the spring 37 is in one Free space 40 of the housing 4 added (Fig. 2).
  • Free space 40 is one in the exemplary embodiment shown Bore, the cross section of which is sufficiently large to on the one hand to be able to take up the curved spring end freely, on the other hand, slight movements of the filler 3 without the spring contacting the bore wall allow.
  • the filler parts 30, 31 are pivotable and radial slidably supported by a filler pin 5.
  • a filler pin 5 is with a cylindrical end in one assigned bearing bore of the housing 4 rotatable recorded and points at its facing the filler Face a rib 51 flat on both sides, the in a corresponding groove on the axial flanks of the Filler piece parts 30, 31 engages (cf. DE-A 43 36 966).
  • the storage of the filler pin 5 in the housing 4 results in the pivotability, the inclusion of the flat rib 51 of the filler pin 5 in the corresponding groove Filler pieces 30, 31 the limited radial Movability of the filler parts.
  • FIGS. 3 to 5 differs from the previously described only in that the Filler piece parts 30 ', 31' not on a common one Filler pen are stored, but each separately its own filler pin 52, 53.
  • the two Filler pins 52, 53 have one substantially square cross section, the corners of which are chamfered 54 are rounded, so that strictly speaking an octagonal Cross section is present (Fig. 5).
  • Both filler pins 52, 53 are rotatable in bores 55, 56 of the housing 4 ' added (Fig. 4). With the filler 3 ' facing end they protrude into corresponding grooves 51 'of the two filler parts and keep them radially displaceable analogous to the design in the exemplary embodiment according to 1 and 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP98102767A 1997-02-20 1998-02-18 Machine à engrenages internes, en particulier pompe à engrenages internes Ceased EP0860610A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19706639 1997-02-20
DE19706639A DE19706639C2 (de) 1997-02-20 1997-02-20 Innenzahnradmaschine, insbesondere Innenzahnradpumpe

Publications (1)

Publication Number Publication Date
EP0860610A1 true EP0860610A1 (fr) 1998-08-26

Family

ID=7820885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98102767A Ceased EP0860610A1 (fr) 1997-02-20 1998-02-18 Machine à engrenages internes, en particulier pompe à engrenages internes

Country Status (3)

Country Link
US (1) US5951274A (fr)
EP (1) EP0860610A1 (fr)
DE (2) DE19706639C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4555756B2 (ja) * 2005-09-13 2010-10-06 株式会社ケーヒン 絞り弁制御装置
DE102012214356A1 (de) * 2012-08-13 2014-02-13 Robert Bosch Gmbh Innenzahnradpumpe
US11506200B1 (en) 2020-02-27 2022-11-22 Parker-Hannifin Corporation Hydraulic gear pump with radial pressure compensator
CN113236554B (zh) * 2021-06-04 2022-06-21 中国人民解放军海军工程大学 一种可双向旋转的渐开线齿廓内啮合齿轮泵

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4336966A1 (de) * 1993-10-29 1995-05-04 Otto Eckerle Innenzahnradmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1653818A1 (de) * 1967-02-28 1971-06-09 Daimler Benz Ag Innenverzahnte Zahnradpumpe,insbesondere fuer die Druckmittelversorgung von selbsttaetig schaltenden Kraftfahrzeuggetrieben
DE2942417A1 (de) * 1979-10-19 1981-05-14 Otto Eckerle GmbH & Co KG, 7502 Malsch Innenzahnradmaschine
DE2954546C2 (fr) * 1979-10-19 1989-07-06 Otto Eckerle Gmbh & Co Kg, 7502 Malsch, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4336966A1 (de) * 1993-10-29 1995-05-04 Otto Eckerle Innenzahnradmaschine

Also Published As

Publication number Publication date
DE29715534U1 (de) 1997-11-06
DE19706639A1 (de) 1998-08-27
DE19706639C2 (de) 1998-12-24
US5951274A (en) 1999-09-14

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