WO2010057484A2 - Groupe hydraulique comprenant une pompe hydraulique présentant un rotor et un stator - Google Patents

Groupe hydraulique comprenant une pompe hydraulique présentant un rotor et un stator Download PDF

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Publication number
WO2010057484A2
WO2010057484A2 PCT/DE2009/001651 DE2009001651W WO2010057484A2 WO 2010057484 A2 WO2010057484 A2 WO 2010057484A2 DE 2009001651 W DE2009001651 W DE 2009001651W WO 2010057484 A2 WO2010057484 A2 WO 2010057484A2
Authority
WO
WIPO (PCT)
Prior art keywords
housing
electric motor
pump housing
hydraulic
pump
Prior art date
Application number
PCT/DE2009/001651
Other languages
German (de)
English (en)
Other versions
WO2010057484A3 (fr
Inventor
Mark Kathan
Reinhold Kraus
Original Assignee
Wilhelm Karmann GmbH i.I.
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 Wilhelm Karmann GmbH i.I. filed Critical Wilhelm Karmann GmbH i.I.
Publication of WO2010057484A2 publication Critical patent/WO2010057484A2/fr
Publication of WO2010057484A3 publication Critical patent/WO2010057484A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir

Definitions

  • the invention relates to a hydraulic unit for actuating at least one movable component, in particular a moving in a top movement of a convertible vehicle vehicle device, comprising a stator and a rotor having a hydraulic pump according to the closer defined in the preamble of claim 1.
  • Hydraulic units which have in a pump housing a rigidly arranged, a control pin forming stator and a rotor rotating thereon in the manner of a cylinder star, are well known in the art.
  • stator is pressed or shrunk in the pump housing.
  • stator hydraulic bores are formed and these often have burrs, which upon insertion of the stator in the pump housing with a press fit to abrasion and shearing of the stator being able to lead.
  • the invention thus provides a hydraulic unit for actuating at least one movable component, in particular a vehicle device moved during a top movement of a convertible vehicle, having a housing for receiving an electric motor and a hydraulic pump hydraulically connected to the tank and driven by the electric motor wherein the hydraulic pump has a rotor arranged on a hydraulic medium and discharging stator, and the housing is formed at least by an electric motor housing accommodating the electric motor and a pump housing which is connected thereto in the use state and receives the hydraulic pump.
  • the stator is arranged with a clearance fit in the pump housing.
  • stator is pressed or shrunk into an opening in the pump housing
  • stator can be simply inserted into a bearing opening and caulked axially and radially in two places, in a surprisingly simple way Achieved advantage that reaching to chip formation abrasion and thereby causing contamination of the oil circuit with the risk of a resulting system failure can be prevented.
  • a bottom of the pump housing arranged at an end of the pump housing facing away from the electric motor housing has a particularly central opening forming a bearing of the stator of the hydraulic pump.
  • the stator can in the usual way, as well known in radial piston pumps, leading to hydraulic lines recesses and these having the rotor of the hydraulic pump connecting axial channels, wherein the radial recesses are arranged at different axial height of the stator and from each other via one between the stator and the surrounding material of the opening of the pump housing arranged sealing means, in particular an O-ring seal, are sealed.
  • the axial channels in the stator are designed as blind bores and are then sealed at their free axial end by a plug.
  • At least one circumferential recess may be formed on the stator for axially locking and / or preventing rotation of the stator in the pump housing, in which a material of the surrounding pump housing, which may be aluminum, for example, is pressed by means of a stamping process.
  • Such an inventive design of a hydraulic unit has the advantage that a connecting the pump housing and the electric motor housing plastic component inexpensively and with any connection means such. B. a separate connection means unnecessary clip device may be formed. Since plastic can be designed easily with a bending behavior, which on the one hand has a temporary deformation in a connection of the connecting element with the pump housing and the electric motor housing and at the same time a sufficient strength for holding the housing components, in the design of the connection with a plastic fastener according to the invention a much greater freedom than is given, for example, in the direct connection of metal components.
  • the use of a plastic connecting element also has the advantage that a highly effective sealing of the electric motor housing and thus the electric motor of the pump housing and the working space contained therein of the hydraulic pump is possible by the connecting element made of plastic, which is a high requirements fulfilling corrosion protection for the electric motor.
  • a particularly simple assembly of the hydraulic unit is made possible when the connecting element is connected in each case via at least one plug-and-lock connection with the electric motor housing and the pump housing.
  • the electric motor housing and the pump housing can be easily pushed onto the connecting element until a latching connection engages.
  • Such a screwless connection is easy to produce during assembly and does not require stocking additional, also the weight of the hydraulic unit increasing connecting elements such. B. screws.
  • the dotssseiement each have a cylindrical pot for connection to the electric motor housing and the pump housing, which each have a cylindrical surface and in particular are arranged coaxially to each other.
  • the plastic connection element itself constitutes a type of housing which at least partially accommodates the electric motor housing and the pump housing.
  • the electric motor housing and the pump housing can each be designed as self-contained or open housing, wherein it is advantageous for the electric motor housing, if this at the ends of its cylindrical lateral surface in each case has a bottom, wherein a first pump housing facing the ground a passage for a motor shaft having.
  • the pump housing pot-shaped with only one bottom at the end remote from the electric motor housing end of its cylindrical surface, wherein the pump housing with the electric motor housing facing the end of its cylindrical surface over the receiving pot of the connecting element, in particular over its outer periphery , is guided.
  • the hydraulic working space of the hydraulic pump is thus limited on the one hand by the pot-like open pump housing and on the other hand by the plastic connecting element.
  • To form the at least one plug-and-detent connection on the connecting element on the one hand and the electric motor housing and the pump housing on the other hand are advantageously in each mating of the connecting element with the electric motor housing and the pump housing in operative contact passing, a rotation and / or axial locking effecting projections and this formed corresponding recesses.
  • a simple rotation of the electric motor housing relative to the kauseler ⁇ ent be achieved that at least one recess is formed on the first, the pump housing facing bottom of the electric motor housing, which with a correspondingly shaped projection on a bottom of a first, the receptacle of the electric motor housing associated receiving pot Connecting element is engaged.
  • the molding of the at least one projection on the bottom of the receiving pot of the plastic connecting element can be carried out in one step with the formation of the further functional elements of the plastic connecting element during its production, so that no additional effort is required for the production of the projections.
  • An effective seal between the hydraulic pump containing the interior of the pump housing and the electric motor housing can be achieved in a simple manner that the first, the recording of the electric motor housing associated pot of the connecting element with at least one seal mounted thereon, in particular one of the motor shaft in the region of a passage of Motor shaft is sealed by the bottom of the first pot surrounding radial shaft seal, against the interior of the pump housing.
  • At least one seal in particular an O-ring seal, which seals an interior of the pump housing containing the hydraulic pump from an environment, can be arranged between the jacket surface of the second receiving pot of the connecting element assigned to the receptacle of the pump housing and the cylindrical jacket surface of the pump housing.
  • the pump housing is provided with the tank containing the hydraulic medium. tied, wherein the tank is preferably cylindrical and coaxial with the pump housing and the Elektromotorge ⁇ housing is arranged.
  • the tank is preferably cylindrical and coaxial with the pump housing and the Elektromotorge ⁇ housing is arranged.
  • the latter may have at its end facing away from the E lektromotorgetude a pot-like flange to which the tank is mounted sealed.
  • the tank for filling and emptying has an outlet opening towards the surroundings, which can be closed sealed by means of a closure lid.
  • closure lid can be fixed to a housing part of the tank by means of a placement latching device.
  • the possible with the cap according to the invention large diameter dimensioning of the outlet opening of the tank has the advantage that, for example, simultaneously with a lance vacuum can be pulled and with another lance filling is performed.
  • a further advantage of a placement latching device is that the hereby possible clipping of the closure lid with the outlet part surrounding the housing part of the tank without metal abrasion is possible, whereby a screwing a metal screw plug on a plastic thread of a tank possible chip formation and consequent contamination of the oil in the tank is avoided.
  • the hydraulic unit according to the invention is particularly suitable for use in a hydraulic system which controls actuators which serve for a top movement of a convertible vehicle, including moving vehicle parts such as a top compartment lid and a boot lid.
  • FIG. 1 shows a simplified longitudinal section through a hydraulic unit of a hydraulic system for actuating at least one vehicle device moved during a top movement of a convertible vehicle;
  • FIG. 2 shows a further longitudinal section through the hydraulic unit of FIG. 1 offset by 90 °;
  • FIGS. 1 and 2 are simplified three-dimensional representation of the hydraulic unit of FIGS. 1 and 2;
  • Fig. 4 is a three-dimensional view of a stator of a
  • Hydraulic pump of the hydraulic unit of FIG. 1 to FIG. 3 as well as pistons of a rotor of the hydraulic pump designed as a cylinder star and cooperating with the stator;
  • FIG. 5 shows a three-dimensional representation of a closure lid of a tank of the hydraulic unit of FIGS. 1 to 3 in isolation.
  • the hydraulic unit 1 is constructed in a manner known per se.
  • the hydraulic pump 11 is z.
  • a conventional radial piston pump with a trained as a cylinder star rotor 17 which is displaceable by the electric motor 7 via a central motor shaft 19 and a clutch 21 in rotation and thereby rotates about a mounted in the pump housing 9, a control pin performing stator 23.
  • a bearing device 25 is provided, which is arranged on a shoulder in the pump housing 9.
  • the hydraulic pump 11 and the electric motor 7 can be operated in both directions of rotation, the assignment of the radial bores 29, 35 from or to the stator 23 to a suction side or pressure side corresponding to the direction of rotation of the hydraulic pump 11 and the electric motor.
  • the Hydraulikpu ⁇ ipe 11 is further connected in a conventional manner hyd ⁇ raulisch with valves in a ⁇ connected to the pump housing 9 ⁇ valve block 37 and a hydraulic channel 39 with an interior 41 of the tank 15.
  • All the housing components of the housing 3, namely the electric motor housing 5, the pump housing 9, the connecting element 13 itself representing a plastic housing and the tank 15 are detachably connected to each other, wherein the electric motor housing 5 and the pump housing 9 without direct contact with each other via the plastic connecting element 13 and formed thereon plug-and-detent connections 43, 45, 47 are connected.
  • both the electric motor housing 5 formed cylindrically with a lateral surface 49 and with bottoms 51, 53 formed at the ends of the lateral surface 49 and arranged coaxially therewith are likewise cylindrical with respect to an inner one Jacket surface 55 formed pump housing 9 pushed into or on the plastic connector 13.
  • the connecting element 13 has in each case a cylindrical receiving pot 57 or 59 for connection to the electric motor housing 5 and the pump housing 9.
  • the pump housing 9 is formed only with a bottom 65 at the end remote from the electric motor housing 5 of its cylindrical inner circumferential surface 55 and pot-like open in the direction of the electric motor. designed gate housing 5, wherein the pump housing 9 is guided with the electric motor housing 5 facing the end of its cylindrical lateral surface 55 via the associated receiving pot 59 of the connecting element 13.
  • the pump housing 9 is pushed for attachment to the plastic connecting element 13 in this case over the outer periphery of the second pot of the connecting element 13, wherein for ease of pushing the free outer peripheral edge 67 of the second on ⁇ Spotifytopfes 59 of the connecting element 13 is formed as a run-on slope.
  • the pump housing is inserted with a corresponding outer contour analogous to the recording of Elekt ⁇ romotorgeophuses 5 on an inner circumference of the lateral surface of the second receiving pot of the plastic connecting element 13.
  • plug-and-detent connections 43, 45, 47, protrusions 69, 71, 73 and corresponding recesses 70, 72, 74 are formed on both the connecting element 13 and the electric motor housing 5 and the pump housing 9 of the connecting element 13 with the electric motor housing 5 and the pump housing 9 come into operative contact and cause an anti-rotation or axial locking of the pump housing 9 and electric motor housing 5 relative to the plastic connecting element 13.
  • recesses 70 are provided on the first bottom 51 of the electric motor housing 5 facing the hydraulic pump 11, which are arranged in a bolt circle thereon and also serve to vent the interior of the electric motor housing 5, to cooperate with correspondingly shaped, pin-like projections 69 at the first bottom 51 of the electric motor housing 5.
  • the outer surface of the electric motor housing 5 slides when inserted into the first pot 57 of the plastic ⁇ connecting element 13 to axially in one of the hydraulic ⁇ pump 11 facing away, radially inwardly projecting and having a run-on slope, a projection 71 forming noses, which engage in the end position of the electric motor housing 5 on the connecting element 13 in corresponding recesses 72 which are hole-like around the circumference of the lateral surface 49 of the electric motor housing 5 and serve in addition to the axial locking of the electric motor housing 5 on the connecting element 13 also a ventilation of the interior of the electric motor housing 5 ,
  • similarly shaped lugs 76 extend outwards, whereupon, for example, a protective cap (not shown in detail) can be fastened.
  • Analogous to the fixing of the electric motor housing 5 to the plastic connecting element 13 is between the lateral surface of the second, the recording of the pump housing 3 associated receiving pot 59 of the connecting element 13 and the inner circumferential surface 55 of the pump housing 9, a projection 73 on the part of the Ardsseiements 13 and a groove-like recess 74 formed on the inner wall of the pump housing 9.
  • the hydraulic unit 1 is completely sealed relative to the environment and between an inner space 10 of the pump housing 9 and the electric motor housing 5, wherein the sealing tion between the hydraulic pump 11 containing the inner space 10 of the pump housing 9 and the pot 57 of the Ver ⁇ bonding element 13 for the electric motor housing 5 by means of a radial shaft seal 75, which arranged on a the interior ⁇ space 10 of the pump housing facing paragraph of the plastic connecting element 13 is and in this case the motor ⁇ shaft 19 in the region of the passage 63 by the bottom 51 of the first pot 57 surrounds takes place.
  • seals 79, 81, 83 formed in the region of the bearing of the stator 23 of the hydraulic pump 11 in the bottom 65 of the pump housing 9 are furthermore provided as O-ring seals.
  • the bottom 65 of the pump housing 9 has for storage of the stator 23 has a central up to the interior 41 of the tank 15 reaching opening 66, in which the stator 23 is arranged with a clearance fit.
  • stator 23 radial, leading to hydraulic lines recesses 29, 35 are arranged at different axial height of the stator 23 and from each other via one between the stator 23 and the surrounding material of the opening 66 of the pump housing 9 arranged, each as O.
  • a respective plug 85, 87 inserted from plastic sealing material is a respective plug 85, 87 inserted from plastic sealing material.
  • a recess 91 formed as a recess is formed on the stator 23, into which aluminum material of the surrounding pump housing 9 is pressed by means of a stamping process.
  • the pump housing 9 is in the embodiment shown with the hydraulic medium-containing tank 15, which is arranged here coaxially with the pump housing 9 and the electric motor housing 5, via a pot-like flange 95 sealed connected, wherein the pot-like flange is disposed on the electric motor housing 5 remote from the end of the pump housing 9.
  • connection in this case again takes place in such a way that the housing of the tank 15 is inserted into the cup-shaped flange 95 with a projection 97 formed on its outer circumference, wherein the bead-like projection 97 engages in a groove-like recess 99 on the inner wall of the cup-shaped flange 95.
  • a seal 101 formed with an O-ring is inserted between the interior 41 of the tank 15 and the catch formed by the projection 97 and the recess 99.
  • the tank 15 Coaxial with the motor shaft 19 and the longitudinal axis of the Hydrau ⁇ likpumpe 11, the tank 15 at its end remote from the hydraulic pump 11 an outlet opening 103 to the environment, which can be closed by means of a closure lid 105th
  • the closure lid 105 which is made of an oil-resistant plastic, is fixed by means of a Aufsetz-Verrast- device 107 on a housing part 109 of the tank 15, wherein the particular for receiving the closure lid 105 housing part 109 of the tank 15 is formed like a flange.
  • the first locking means 111 on the outer circumference of the flange-like housing part 109 are presently designed as a groove-like recess, while the here cooperating second locking means 115 are formed as deformable or resilient locking tabs made of plastic, which in the circumferential direction radially inwardly each have a projection 117, which engages in the groove-like recess 111 have.
  • the plastic closure lid 105 is thus with the one to achieve a spring effect widening diameter of the closure lid 105 forming locking tabs 115 on the flange-like housing part 109 of the tank 15, which surrounds the outlet opening 103, inverted and axially shifted in the direction of the outlet opening 103, wherein the locking tabs 115 are temporarily flexed outwardly until they come into engagement Stel ⁇ lung with the groove-like recess 111 and hereby lock.
  • the outlet opening 103 which in the present case has a diameter of about 20 mm, is formed like a collar in the embodiment shown, wherein the closure lid 105 engages with a plug-like portion in the collar-like outlet opening 103.
  • a seal 123 designed as an O-ring seal is used, which seals the interior 41 of the tank 15 in the region of the closure lid 105 from the environment.

Landscapes

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

Abstract

La présente invention concerne un groupe hydraulique (1) destiné à actionner au moins un élément mobile, en particulier un dispositif de véhicule déplacé lors d'un mouvement de capote d'un véhicule cabriolet, le groupe comprenant un boîtier (3) destiné à prendre en charge un moteur électrique (7) et une pompe hydraulique (11) entraînée par le moteur électrique (7) et reliée d'un point de vue hydraulique à un réservoir (15) de liquide hydraulique. Selon l'invention, la pompe hydraulique (11) présente un rotor (17) disposé sur un stator (23) assurant l'amenée et l'évacuation de liquide hydraulique, et le boîtier (3) est formé au moins par un boîtier de moteur électrique (5) qui prend en charge le moteur électrique (7), et un boîtier de pompe (9) qui prend charge la pompe hydraulique (11) et est relié au boîtier de moteur électrique en cours d'utilisation. Le stator (23) est selon l'invention disposé avec un ajustement avec jeu dans le boîtier de pompe (9).
PCT/DE2009/001651 2008-11-20 2009-11-18 Groupe hydraulique comprenant une pompe hydraulique présentant un rotor et un stator WO2010057484A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810058284 DE102008058284A1 (de) 2008-11-20 2008-11-20 Hydraulisches Aggregat mit einer einen Stator und einen Rotor aufweisenden Hydraulikpumpe
DE102008058284.0 2008-11-20

Publications (2)

Publication Number Publication Date
WO2010057484A2 true WO2010057484A2 (fr) 2010-05-27
WO2010057484A3 WO2010057484A3 (fr) 2010-10-07

Family

ID=41849297

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2009/001651 WO2010057484A2 (fr) 2008-11-20 2009-11-18 Groupe hydraulique comprenant une pompe hydraulique présentant un rotor et un stator

Country Status (2)

Country Link
DE (1) DE102008058284A1 (fr)
WO (1) WO2010057484A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017128095A1 (de) * 2017-11-28 2019-05-29 Hoerbiger Automotive Komfortsysteme Gmbh Hydraulisches System
DE102019112677A1 (de) * 2019-05-15 2020-11-19 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Hydraulikversorgungssystem für ein Fahrzeug

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
GB583396A (en) * 1944-09-13 1946-12-17 Thomas Desmond Hudson Andrews Improvements in or relating to air, gas or vapour compressors
US2429368A (en) * 1945-07-19 1947-10-21 Quiroz Francisco Angel Rotary pump
US2868136A (en) * 1954-05-13 1959-01-13 Melba L Benedek Pump
DE2341013C2 (de) * 1973-08-14 1982-08-05 Alfred Teves Gmbh, 6000 Frankfurt Radialkolbenpumpe
GB8807435D0 (en) * 1988-03-28 1988-05-05 Hobourn Technology Ltd Positive displacement pumps
DE4120665A1 (de) * 1991-06-22 1992-12-24 Teves Gmbh Alfred Elektromotorisch angetriebene hydraulikpumpe
NL1002219C1 (nl) * 1996-01-31 1997-08-01 Applied Power Inc Radiale-plunjerpomp.
NL1012151C2 (nl) * 1999-05-25 2000-11-28 Applied Power Inc Radiale plunjermachine, in het bijzonder een radiale plunjerpomp.
NL1032772C2 (nl) * 2006-10-30 2008-05-06 Actuant Corp Hydraulische bedieningsinrichting voor een afsluitelement van een motorvoertuig.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
DE102008058284A1 (de) 2010-05-27
WO2010057484A3 (fr) 2010-10-07

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