EP2483562A2 - Etancheite axial pour une pompe à engrenages interne - Google Patents

Etancheite axial pour une pompe à engrenages interne

Info

Publication number
EP2483562A2
EP2483562A2 EP10759877A EP10759877A EP2483562A2 EP 2483562 A2 EP2483562 A2 EP 2483562A2 EP 10759877 A EP10759877 A EP 10759877A EP 10759877 A EP10759877 A EP 10759877A EP 2483562 A2 EP2483562 A2 EP 2483562A2
Authority
EP
European Patent Office
Prior art keywords
internal gear
pump
pressure piece
gear pump
disc
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.)
Withdrawn
Application number
EP10759877A
Other languages
German (de)
English (en)
Inventor
Rene Schepp
Norbert Alaze
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2483562A2 publication Critical patent/EP2483562A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps

Definitions

  • the invention relates to an internal gear pump for a hydraulic vehicle brake system having the features of the preamble of claim 1.
  • Such an internal gear pump is known from the published patent application
  • the internal gear pump has an internal gear and an external gear eccentric to and meshing with the internal gear.
  • the internal gear pump has a pressure piece on an end face of the internal gear and the external gear, sealingly against the end faces of the pump
  • the pump space is a space between the two gears that extends circumferentially from a pump inlet to a pump outlet.
  • the pressure piece is usually in the form of a perforated disk and is penetrated by a pump shaft, it is also referred to as an axial disk. It can be arranged on both faces of the gears of an internal gear pump, a pressure piece or there is only one pressure piece available.
  • the pump chamber is closed and sealed on the other end face, for example by a housing wall of a pump housing, the pump housing being closed on this side, for example, or it is a housing wall between two internal gear pumps.
  • the housing wall can possibly be interpreted as a pressure piece.
  • the thrust piece of an internal gear pump must be made of a wear-resistant material, otherwise the gear wheels form in particular in the region of their tooth heads, which leads to leakage, worsens the efficiency of the pump and a delivery pressure, ie a pressure difference between pump penauslass and pump inlet, reduced.
  • a delivery pressure ie a pressure difference between pump penauslass and pump inlet, reduced.
  • the pump inlet and the pump outlet pass through the pressure piece, it has a complicated shape.
  • the pump outlet in some cases also the pump inlet, has a so-called pressure field in the pressure piece.
  • the pressure field is a recess that extends a little bit in the circumferential direction.
  • the preparation of such a pressure piece of a wear-resistant material is complex because of the complicated shape and associated with high costs.
  • the internal gear pump according to the invention with the features of claim 1 has a pressure piece on an end face of the gears, d. H. of the internal gear and the external gear of the internal gear pump. Between the pressure piece and the gears, a disc with high wear resistance is arranged rotationally fixed, which closes and seals the pump chamber on this end face.
  • the disc and / or the pressure piece can extend over the entire circumference or over part of the circumference, the disc extends at least as far in the circumferential direction as the pump space of the internal gear pump. Because the disc rotatably rests on the pressure piece and no pressure component along the pressure piece, the pressure piece of the internal gear pump according to the invention is in principle not wear-exposed.
  • the invention has the advantage that the pressure piece can consist of a cost-effective, easy to process and / or easily produced material, it can be made for example by injection molding of plastic.
  • the arranged between the pressure piece and the gears of the internal gear pump disc can be thin and therefore requires little material.
  • the material costs of the disc can be kept low, even if the disc consists of an expensive material high wear resistance.
  • Another advantage is the easier machinability of the disk when it is thin.
  • FIG. 1 shows an axial section of an internal gear pump according to the invention
  • Figure 2 is an end view of an internal gear pump of Figure 1;
  • FIG. 3 shows a disk of the internal gear pump from FIGS. 1 and 2;
  • Figure 4 is a pressure piece of the internal gear pump of Figures 1 and 2 embodiment of the invention
  • the illustrated in Figure 1 internal gear pump 1 is a double pump with two internal gear pumps 2, 2 '.
  • Each internal gear pump 2, 2 ' has an external gear 3, 3' and an internal gear 4, 4 ', which mesh with each other.
  • the two gears 3, 4, 3 ', 4' are arranged in a plane and eccentric to each other.
  • the external gears 3, 3 ' are rotationally fixed by star profiles 5, 5' by positive engagement with a pump shaft 6.
  • the two internal gear pumps 2, 2 ' are housed in a two-part housing 7, 7', the radially divided and the two housing halves 7, T axially are pinned together. Between the two gear pumps 2, 2 'is a
  • Partition 8 arranged.
  • a pump chamber 10 ( Figure 2) between the external gear 3, 3 'and the internal gear 4, 4', an arcuate sickle 1 1 is arranged, which is pivotable about a pin 12 which passes through the filler 1 1 axially parallel to the pump shaft 6. Tooth tips of the external gear 3, 3 'and the internal gear 4, 4' strip on the sickle 1 1 along.
  • the internal gear pump 2, 2 ' is therefore a so-called sickle pump.
  • the invention is not limited to this type of internal gear pump, it may for example be designed as a gerotor pump (not shown).
  • the pump chamber 10 extends within the nenzahnrads 4, 4 'in the circumferential direction around the external gear 3, 3' from a pump inlet 13 to a pump outlet 14th
  • FIG. 4 shows the front view of one of the plungers 9.
  • the plungers 9 are disc-shaped, they are made of plastic and are made by injection molding. They have the shape of circle segments extending over more than 180 °, i. H. take more than one semicircle.
  • an oblique surface 16 is excluded at the transition from a straight, chordwise edge 17 to the periphery.
  • the pressure pieces 9 have a blind hole 18 for the pin 12 of the sickle 1 1 and a pressure pad 19.
  • the pressure field 19 is a recess in the end face of the pressure piece 9, which faces the internal gear pump 2, 2 'and which extends a little way in the circumferential direction and tapers in a circumferential direction.
  • Pressure fields are known from internal gear pumps, they serve an axial hydraulic compensation at the pump inlet and / or outlet.
  • 2 In the illustrated internal gear pump 2, 2 'communicates the pressure field 19 with the pump outlet 14, at the pump inlet 13, the pressure piece 9, instead of a pressure field, the flattening through the chordwise edge 17.
  • the left in Figure 1 pressure piece 9 on the closed side of the housing 7 additionally has a bearing bush 20 for pivotal mounting of the pump shaft 6.
  • the bushing 20 is an integral part of the pressure piece 9.
  • Figure 1 right pressure piece 9 ' has no bearing bush, because the pump shaft 6 is mounted there with an engine mount, not shown, an electric drive motor of the internal gear pump 1, 2, 2'.
  • a disc 21, 21 ' is arranged, which consists of metal or other wear-resistant material.
  • the disc 21 has the same shape as the pressure piece 9. The disc 21 closes the pump chamber 10 and seals the gears 3, 4, 3 ', 4' at their end faces.

Abstract

L'invention concerne une pompe à engrenage interne (2, 2') pour un système de freinage hydraulique à régulation de glissement de véhicule, comportant une pièce de pression (8, 9, 9') des deux côtés des roues dentées (3, 4, 3', 4'). Selon l'invention, une plaque (21, 21') en matériau résistant à l'usure est disposée entre la pièce de pression (8, 9, 9') et la pompe à engrenage (2, 2'). Les pièces de pression (9, 9') peuvent être fabriquées en plastique pour un moindre coût.
EP10759877A 2009-10-01 2010-09-27 Etancheite axial pour une pompe à engrenages interne Withdrawn EP2483562A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009045227A DE102009045227A1 (de) 2009-10-01 2009-10-01 Innenzahnradpumpe für eine hydraulische Fahrzeugbremsanlage
PCT/EP2010/064214 WO2011039128A2 (fr) 2009-10-01 2010-09-27 Pompe à engrenage interne pour un système de freinage hydraulique de véhicule

Publications (1)

Publication Number Publication Date
EP2483562A2 true EP2483562A2 (fr) 2012-08-08

Family

ID=43798655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10759877A Withdrawn EP2483562A2 (fr) 2009-10-01 2010-09-27 Etancheite axial pour une pompe à engrenages interne

Country Status (6)

Country Link
US (1) US20120244028A1 (fr)
EP (1) EP2483562A2 (fr)
JP (1) JP2013506088A (fr)
CN (1) CN102782326A (fr)
DE (1) DE102009045227A1 (fr)
WO (1) WO2011039128A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009045574A1 (de) * 2009-10-12 2011-04-14 Robert Bosch Gmbh Doppel-Innenzahnradpumpe
DE102013201384A1 (de) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Innenzahnradpumpe
DE102013204616B4 (de) 2013-03-15 2021-12-09 Robert Bosch Gmbh 2Innenzahnradpumpe
JP6347478B2 (ja) * 2014-03-06 2018-06-27 日本オイルポンプ株式会社 ポンプ装置
KR200486890Y1 (ko) * 2016-07-05 2018-07-11 훌루테크 주식회사 결합구조가 단순화된 내접기어펌프
CN107939671A (zh) * 2017-10-19 2018-04-20 浙江大学 一种具有错位角的串联式低脉动内啮合齿轮泵
DE102018212497A1 (de) * 2018-07-26 2020-01-30 Eckerle Technologies GmbH Fluidfördereinrichtung
DE102019217049A1 (de) * 2019-11-06 2021-05-06 Robert Bosch Gmbh Innenzahnradmaschine mit hydrostatisch abgestütztem inneren Dichtungsteil am Füllstück

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Publication number Priority date Publication date Assignee Title
DE1403923A1 (de) * 1960-09-26 1969-11-06 Oilenergetic Establishment Radialdurchstroemte Hochleistungs-Zahnradpumpe oder Motor
CH405940A (de) * 1961-10-06 1966-01-15 Eckerle Otto Bezüglich Verschleiss ausgeglichene Hochleistungs-Zahnradpumpe
FR1389993A (fr) * 1964-04-11 1965-02-19 Pompe à engrenages à grand débit et à compensation d'usure
DE1553001B1 (de) * 1965-11-23 1970-02-12 Danfoss As Drehkolbenmaschine
JPS5216803B2 (fr) * 1973-07-04 1977-05-11
JPS57193788A (en) * 1981-05-22 1982-11-29 Kayaba Ind Co Ltd Internally engaged gear pump or motor
JPH0161477U (fr) * 1987-10-14 1989-04-19
JPH0544651A (ja) * 1991-08-12 1993-02-23 Toyooki Kogyo Co Ltd 内接歯車ポンプ
JPH0914152A (ja) * 1995-06-30 1997-01-14 Jatco Corp 内接歯車式回転ポンプ
JP3514144B2 (ja) * 1998-11-12 2004-03-31 トヨタ自動車株式会社 内接ギヤポンプ
JP4176408B2 (ja) * 2002-07-25 2008-11-05 株式会社アドヴィックス 溶接方法及びその溶接方法を使用した筒状構造体とギアポンプ
DE102005004657A1 (de) * 2005-02-02 2006-08-03 Eckerle Industrie-Elektronik Gmbh Innenzahnradmaschine
DE102007054808A1 (de) 2007-11-16 2009-05-20 Robert Bosch Gmbh Pumpenbaugruppe zur synchronen Druckbeaufschlagung von zwei Fluidkreisen
CN201176931Y (zh) * 2008-02-02 2009-01-07 许从智 一种差动式高压转子泵

Non-Patent Citations (1)

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Title
See references of WO2011039128A2 *

Also Published As

Publication number Publication date
DE102009045227A1 (de) 2011-04-21
CN102782326A (zh) 2012-11-14
WO2011039128A2 (fr) 2011-04-07
JP2013506088A (ja) 2013-02-21
US20120244028A1 (en) 2012-09-27
WO2011039128A3 (fr) 2011-11-10

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