US20140030129A1 - Axial washer for a gear-type pump comprising an axial washer of this type - Google Patents

Axial washer for a gear-type pump comprising an axial washer of this type Download PDF

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Publication number
US20140030129A1
US20140030129A1 US13/994,754 US201113994754A US2014030129A1 US 20140030129 A1 US20140030129 A1 US 20140030129A1 US 201113994754 A US201113994754 A US 201113994754A US 2014030129 A1 US2014030129 A1 US 2014030129A1
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United States
Prior art keywords
seal
pump
gear
axial washer
axial
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.)
Abandoned
Application number
US13/994,754
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English (en)
Inventor
Klaus Heyer
Harald Speer
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
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEYER, KLAUS, SPEER, HARALD
Publication of US20140030129A1 publication Critical patent/US20140030129A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F04C27/006—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type pumps, e.g. gear pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/102—Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • 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
    • F04C15/0007—Radial sealings for working fluid
    • F04C15/0015—Radial sealings for working fluid of resilient material
    • 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
    • F04C15/0007—Radial sealings for working fluid
    • F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • 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
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • 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
    • F04C2/102—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 the two members rotating simultaneously around their respective axes
    • 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
    • F04C2230/602—Gap; Clearance

Definitions

  • the invention relates to an axial washer for a gear-type pump and to a gear-type pump comprising at least one axial washer of this type in accordance with the features of the preambles of claim 1 or 4 .
  • Axial washers of this kind for axial sealing and for gap compensation on both sides of the gearwheels of gear-type pumps are known.
  • patent DE 196 13 833 B4 which has an internal gear pump with an axial washer on each side of the gearwheels thereof.
  • the axial washer is held in such a way that it can move axially and is fixed in terms of relative rotation.
  • the pump space is a circumferential segment between the two gearwheels in which the gearwheels do not mesh with one another and in which the gearwheels pump liquid in the circumferential direction from an intake side to a delivery side of the gear-type pump during the operation of the gear-type pump, i.e. when the gearwheels thereof are being driven in rotation.
  • the discharge region is a region of the pump space in which a higher pressure prevails than on the intake side or in which the pressure rises to the pressure on the delivery side during the operation of the gear-type pump, owing to the pumping action thereof.
  • the known internal gear pump has a pressure area for each of the two axial washers thereof.
  • the pressure area is a flat, crescent-shaped depression which extends across the discharge region of the pump space and communicates with the discharge region of the gear-type pump.
  • the pressure area does not have to have exactly the shape and size of the discharge region of the pump space: normally the pressure area has a larger area than the discharge region of the pump space, with the result that the application of pressure from the outside results in a force which presses the axial washer inward against the sides of the gearwheels of the gear-type pump.
  • the pressure area is sealed off by a seal which surrounds the pressure area. The seal rests in a groove which extends along an edge of the pressure area.
  • the axial washer according to the invention On its outer side, the axial washer according to the invention, having the features of claim 1 , has a seal surrounding a pressure area.
  • the seal is applied to the axial washer as a free-flowing and setting compound.
  • the compound is pasty for application and is applied to the axial washer by means of a nozzle which imparts the cross-sectional shape of the seal to the compound.
  • the pressure area on the axial washer is circled, with the result that the compound, which is applied in the form of a strand or a bead, for example, and forms the seal after setting, surrounds the pressure area.
  • the compound As it emerges from the nozzle, the compound is viscous enough to retain its shape, i.e. both its path around the pressure area and its cross-sectional shape.
  • the compound applied to the axial washer forms the seal, which surrounds the pressure area of the axial washer.
  • the compound forming the seal, and hence the seal is joined materially, that is to say as though adhesively bonded, to the axial washer.
  • the compound preferably sets so as to be rubber-elastic, thus forming a flexible seal.
  • “Setting” is intended to mean solidification of the free-flowing, e.g. pasty, compound to form the seal, irrespective of the solidification mechanism.
  • the seal is preferably (rubber-)elastic after setting.
  • the invention has the advantage of good stability of the seal, especially also when subjected to pressure from the outside. Another advantage is the suitability of the seal according to the invention for automatic production and application to the axial washer, with the seal being applied, as described, to the axial washer as a pasty sealing compound by means of a nozzle, wherein the nozzle is guided over the axial washer, along the edge of the pressure area, by a robot or some other machine or, conversely, the axial washer is guided across the nozzle outlet. Mounting of the seal, i.e. insertion of a sealing ring into a groove at the edge of the pressure area, is eliminated. The risk that the seal will not rest in the groove in the manner envisaged during the assembly of the gear-type pump is likewise eliminated.
  • the injection mold has the shape of the seal as a cavity and is clamped to the axial washer in order to injection-mold the seal, i.e. to apply the setting compound that forms the seal to the axial washer, with the result that the axial washer closes (covers) the cavity of the injection mold, and the setting compound can be injected into the cavity.
  • claim 3 envisages that the seal is applied in a fillet or a groove which surrounds the pressure area.
  • the fillet or groove supports the seal against the application of pressure parallel to the outer side of the axial washer, although a fillet supports the seal in only one direction.
  • Claim 4 relates to a gear-type pump having an axial washer of the kind explained above.
  • the gear-type pump preferably has axial washers on both sides of its gearwheels.
  • the pressure area can be provided on the outer side of the axial washer and/or on an inner wall of the pump casing between which and the gearwheels of the gear-type pump the axial washer is arranged. It is likewise possible for the free-flowing and setting compound which forms the seal after setting to be applied to the outer side of the axial washer and/or to the inner wall of the pump casing, there also being the possibility of applying the seal to the axial washer and providing the pressure area on the inner wall of the gear-type pump or vice versa.
  • claim 5 envisages that the gear-type pump is an internal gear pump.
  • the gear-type pump according to the invention is provided as a hydraulic pump for delivering brake fluid in a hydraulic, slip-controlled and/or independently powered vehicle brake system.
  • such pumps are often referred to as return pumps.
  • FIG. 1 shows a side view of a gear-type pump according to the invention without the pump casing
  • FIG. 2 shows an axial section along the line II-II in FIG. 1 ;
  • FIG. 3 shows a view of an axial washer according to the invention for the gear-type pump in FIGS. 1 and 2 .
  • the gear-type pump 1 which is shown in FIGS. 1 and 2 , is an internal gear pump and is provided for use as a hydraulic pump for producing a hydraulic brake pressure in a hydraulic slip-controlled and/or independently powered vehicle brake system (not shown). Although not necessarily applicable, such hydraulic pumps for vehicle brake systems are also referred to as return pumps.
  • the gear-type pump 1 has two intermeshing gearwheels 2 , 3 , namely an externally toothed gearwheel, referred to here as pinion 2 , and an internally toothed annulus 3 .
  • the pinion 2 is fixed for conjoint rotation on a pump shaft 4 ; it can be driven in rotation by the rotary drive of the pump shaft 4 and, for its part, drives the annulus 3 in rotation, said annulus being provided with sliding support for rotation in a bearing ring 5 .
  • the gearwheels 2 , 3 delimit a crescent-shaped pump space 6 between them, in which a crescent-shaped divider 7 is arranged to divide the pump space 6 into an intake region 8 and a discharge region 9 .
  • a pin 10 which passes transversely through the pump space 6 , holds the divider 7 , and the divider 7 is pivotable on the pin 10 . Tooth tips of teeth of the gearwheels 2 , 3 rest against an outer and an inner side of the divider 7 and slide along the outer and the inner side of the divider 7 when the gearwheels 2 and 3 are driven in rotation.
  • the gear-type pump 1 i.e.
  • the gearwheels 2 , 3 pump brake fluid or, more generally, fluid which is enclosed in interspaces between the teeth thereof from the intake region 8 to the discharge region 9 , i.e. from an inlet to an outlet of the gear-type pump 1 .
  • An inlet bore 11 opens into the intake region 8 , and a pump outlet is formed by a slot 12 in an axial washer 13 , which will be explained below.
  • the gear-type pump 1 which is designed as an internal gear pump, has an axial washer 13 on each of the two sides of the gearwheels 2 , 3 . Where the edges 17 , 18 of the axial washers 13 are concealed by the gearwheels 2 , 3 , the edges 17 , 18 are indicated by dashed lines in FIG. 1 .
  • FIG. 3 shows an outer side of one of the two axial washers 13 .
  • the axial washers 13 are situated in an interspace between the gearwheels 2 , 3 and the inner walls 14 , 15 of a pump casing 16 .
  • the axial washers 13 cover at least the discharge region 9 of the pump space 6 ; in the illustrative embodiment, the axial washers 13 have the shape of circular segments which occupy more than the area of the semicircle and have a recess 19 in the form of an oblique step at a transition from a circular edge 17 to a straight edge 18 extending in the direction of a chord.
  • the axial washers 13 have a hole 20 for the pump shaft 4 and a hole 21 for the pin 10 which holds the crescent-shaped divider 7 .
  • the axial washers 13 can move in the axial direction and are held in a manner fixed against relative rotation by the pump shaft 4 and the pin 10 . By means of their inner sides, which face the gearwheels 2 , 3 , the axial washers 13 rest against the sides of the gearwheels 2 , 3 and of the crescent-shaped divider 7 and seal the pump space 6 off at the sides.
  • the axial washers 13 each have a pressure area 22 .
  • the pressure area 22 reaches almost as far as the circular edge 17 of the axial washer 13 and, on the inside, almost as far as the hole 20 for the pump shaft 4 .
  • the pressure area 22 is surrounded by a groove in which there is a seal 23 .
  • the seal 23 is applied as a free-flowing pasty compound into the groove in the axial washer 13 surrounding the pressure area 22 , being shaped in the process, before the gear-type pump 1 is assembled.
  • the compound is applied by means of a nozzle (not shown), the nozzle outlet of which is moved along the groove to apply the compound.
  • the nozzle has a shaping function, imparting its cross-sectional shape to the compound insofar as the latter projects from the groove.
  • the compound is viscous enough to retain the shape and cross section imparted to it by the nozzle.
  • the compound projects in the form of a bead with a semicircular cross section from the groove, beyond the outer side of the axial washer 13 .
  • the groove surrounding the pressure area 22 in the outer side of the axial washer 13 supports the free-flowing compound and simplifies the production of the seal by reducing the risk that the compound will flow away.
  • the setting process joins the seal 23 materially to the axial washer 13 .
  • the seal 23 which, as already stated, projects in the form of a bead somewhat above the outer side of the axial washer 13 , rests against the inner wall 14 , 15 of the pump casing 16 and seals off the pressure area 22 at the inner wall 14 , 15 .
  • One inner wall 14 is formed by a bottom of a stepped recess in the pump casing 16 , into which the gear-type pump 1 is installed.
  • the other inner wall 15 is formed by an inner side of a casing cover 24 which closes the pump casing 16 .
  • the axial washer 13 has the arc-shaped slot 12 already mentioned, which passes through the axial washer 13 .
  • the slot 12 is situated in the discharge region 9 of the pump space 6 , and therefore the pressure area 22 communicates with the discharge region 9 of the gear-type pump 1 , which is designed as an internal gear pump.
  • the pressure areas 22 of the axial washers 13 are thus subjected to the pressure which prevails in the discharge region 9 of the gear-type pump 1 , i.e. to the pressure of the pump outlet.
  • This pressure acts on the outer sides of the axial washers 13 and presses the inner sides thereof into sealing contact with the gearwheels 2 , 3 and the divider 7 of the gear-type pump 1 , thereby ensuring the lateral sealing of the pump space 6 in the discharge region 9 .
  • the discharge region 9 communicates via the slot 12 in one of the two axial washers 13 with an outlet bore 25 in the pump casing 16 .
  • the seal 23 is joined materially to the axial washer 13 .
  • the seal 23 is provided with additional stability by being applied into the groove surrounding the pressure area 22 .
  • the pump casing 16 is part of a hydraulic block of a slip control system (not otherwise shown) of a hydraulic vehicle brake system.
  • a slip control system (not otherwise shown) of a hydraulic vehicle brake system.
  • additional hydraulic components such as solenoid valves, are inserted into the hydraulic block forming the pump casing 16 and hydraulically interconnected. Hydraulic blocks of this kind are known to a person skilled in the art, and will not be explained specifically here.
  • said system is initially evacuated in order to avoid air inclusions. Brake fluid is then introduced. During this process, the seal 23 of the pressure area 22 may be subjected to pressure from outside, i.e.
  • the pressure on the outside may be higher than that in the pressure area 22 . Because the seal 23 is applied with a shaping action and, as a result, is joined materially to the axial washer 13 , it withstands such an application of pressure from the outside. In addition, stability is imparted to the seal 23 by the groove surrounding the pressure area 22 , in which the seal 23 is situated.
  • the groove with the seal 23 and/or the pressure area 22 can be provided in the inner walls 14 , 15 of the pump casing 16 , and the seal 23 can also be provided in the outer side of the axial washer 13 and the pressure area 22 in the inner wall 14 , 15 of the pump casing 16 or vice versa. It is also possible to provide the pressure area 22 and/or the seal 23 both on the outer side of the axial washers 13 and on the inner walls 14 , 15 of the pump casing 16 (not shown).
  • the pump shaft 4 is provided with sliding support in the pump casing 16 and in the housing cover 24 by means of two bearing bushes 26 on both sides of the gearwheels 2 , 3 , and is sealed off in the housing cover 24 by means of a seal 27 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
US13/994,754 2010-12-17 2011-11-30 Axial washer for a gear-type pump comprising an axial washer of this type Abandoned US20140030129A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010063313.5 2010-12-17
DE102010063313A DE102010063313A1 (de) 2010-12-17 2010-12-17 Axialscheibe für eine Zahnradpumpe und Zahnradpumpe mit einer solchen Axialscheibe
PCT/EP2011/071358 WO2012079982A2 (de) 2010-12-17 2011-11-30 Axialscheibe für eine zahnradpumpe und zahnradpumpe mit einer solchen axialscheibe

Publications (1)

Publication Number Publication Date
US20140030129A1 true US20140030129A1 (en) 2014-01-30

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ID=45047830

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/994,754 Abandoned US20140030129A1 (en) 2010-12-17 2011-11-30 Axial washer for a gear-type pump comprising an axial washer of this type

Country Status (7)

Country Link
US (1) US20140030129A1 (de)
EP (1) EP2686556A2 (de)
JP (1) JP2014506969A (de)
KR (1) KR20130141595A (de)
CN (1) CN103620222A (de)
DE (1) DE102010063313A1 (de)
WO (1) WO2012079982A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219132A1 (de) * 2012-10-19 2014-04-24 Robert Bosch Gmbh Innenzahnradpumpe für eine hydraulische Fahrzeugbremsanlage
DE102013201384A1 (de) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Innenzahnradpumpe
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
DE102018212497A1 (de) 2018-07-26 2020-01-30 Eckerle Technologies GmbH Fluidfördereinrichtung
WO2023011918A1 (de) * 2021-08-05 2023-02-09 Hydraulik Nord Technologies GmbH Innenzahnradmaschine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096719A (en) * 1960-04-29 1963-07-09 Webster Electric Co Inc Rotary pump or motor
US3213800A (en) * 1965-05-04 1965-10-26 Webster Electric Co Inc Unitary wear plate and seal
US3496877A (en) * 1967-08-11 1970-02-24 Otto Eckerle Internal gear hydraulic pump or motor
US3912427A (en) * 1973-01-05 1975-10-14 Otto Eckerle High pressure gear pump
US4090820A (en) * 1975-06-24 1978-05-23 Kayabakogyokabushikikaisha Gear pump with low pressure shaft lubrication
US4643864A (en) * 1984-10-01 1987-02-17 Tako S.P.A. Process for making sealing gaskets
US5354188A (en) * 1992-03-19 1994-10-11 J. M. Voith Gmbh Sickleless internal gear pump with radially movable sealing elements for radial compensation
US6659748B1 (en) * 1999-07-06 2003-12-09 Voith Turbo Gmbh & Co. Kg Axial compensation in an inner geared pump for a closed circuit
US20040113311A1 (en) * 2001-02-28 2004-06-17 Nobuhiro Hasegawa Novel polymer and liquid gasket for in-place forming
US20080164100A1 (en) * 2005-04-18 2008-07-10 Toyota Jidosha Kabushiki Kaisha Oil Path Structure

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1236935A (en) * 1967-09-02 1971-06-23 Plessey Co Ltd Improvements in or relating to gear pumps more particularly for use with hot hydrocarbon liquid fuels
JPS49106608A (de) * 1973-02-16 1974-10-09
GB2086480B (en) * 1980-10-25 1984-01-25 Plessey Co Ltd A rotary positive-displacement pump
JPS5791391A (en) * 1980-11-27 1982-06-07 Kayaba Ind Co Ltd Loading mechanism for inscribed gear pump or motor
DE19613833B4 (de) 1996-04-06 2004-12-09 Bosch Rexroth Ag Innenzahnradmaschine, insbesondere Innenzahnradpumpe
KR20040021296A (ko) * 2002-09-03 2004-03-10 정혜경 누설 방지용 씰 부재를 갖는 무급유식 스크류형 유체기계
JP4538213B2 (ja) * 2003-10-10 2010-09-08 日産自動車株式会社 液状ガスケットを用いたシール構造
JP4787596B2 (ja) * 2005-10-28 2011-10-05 株式会社ブリヂストン ガスケットの製造方法、及びシール構造
JP2008144911A (ja) * 2006-12-12 2008-06-26 Three Bond Co Ltd シール構造
JP2008307443A (ja) * 2007-06-13 2008-12-25 Bridgestone Corp シール部材の製造方法
DE102007049704B4 (de) * 2007-10-17 2019-01-31 Robert Bosch Gmbh Innenzahnradpumpe für eine Bremsanlage
JP2009121601A (ja) * 2007-11-15 2009-06-04 Toyota Motor Corp 装置のシール構造および同装置の製造方法
JP2009299735A (ja) * 2008-06-11 2009-12-24 Nok Corp 密封装置
JP2010234246A (ja) * 2009-03-31 2010-10-21 Nhk Spring Co Ltd 紫外線硬化型樹脂組成物の塗布硬化方法及びその塗布硬化装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096719A (en) * 1960-04-29 1963-07-09 Webster Electric Co Inc Rotary pump or motor
US3213800A (en) * 1965-05-04 1965-10-26 Webster Electric Co Inc Unitary wear plate and seal
US3496877A (en) * 1967-08-11 1970-02-24 Otto Eckerle Internal gear hydraulic pump or motor
US3912427A (en) * 1973-01-05 1975-10-14 Otto Eckerle High pressure gear pump
US4090820A (en) * 1975-06-24 1978-05-23 Kayabakogyokabushikikaisha Gear pump with low pressure shaft lubrication
US4643864A (en) * 1984-10-01 1987-02-17 Tako S.P.A. Process for making sealing gaskets
US5354188A (en) * 1992-03-19 1994-10-11 J. M. Voith Gmbh Sickleless internal gear pump with radially movable sealing elements for radial compensation
US6659748B1 (en) * 1999-07-06 2003-12-09 Voith Turbo Gmbh & Co. Kg Axial compensation in an inner geared pump for a closed circuit
US20040113311A1 (en) * 2001-02-28 2004-06-17 Nobuhiro Hasegawa Novel polymer and liquid gasket for in-place forming
US20080164100A1 (en) * 2005-04-18 2008-07-10 Toyota Jidosha Kabushiki Kaisha Oil Path Structure

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Comparison of Formed-in-Place Gaskets to Conventional Compression Gaskets, 10 October 2008, Permabond Company Blog. *
Form-in-Place FIP Gasketing, 28 September 2008, Central Coating Co., Inc. *

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DE102010063313A1 (de) 2012-06-21
KR20130141595A (ko) 2013-12-26
JP2014506969A (ja) 2014-03-20
CN103620222A (zh) 2014-03-05
WO2012079982A3 (de) 2013-12-19
EP2686556A2 (de) 2014-01-22

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