EP0088674A1 - Elektro-hydraulische Einheit für Servolenkungsanlagen, insbesondere für Fahrzeuge - Google Patents

Elektro-hydraulische Einheit für Servolenkungsanlagen, insbesondere für Fahrzeuge Download PDF

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Publication number
EP0088674A1
EP0088674A1 EP83400405A EP83400405A EP0088674A1 EP 0088674 A1 EP0088674 A1 EP 0088674A1 EP 83400405 A EP83400405 A EP 83400405A EP 83400405 A EP83400405 A EP 83400405A EP 0088674 A1 EP0088674 A1 EP 0088674A1
Authority
EP
European Patent Office
Prior art keywords
pump
group according
electric motor
hydraulic
hydraulic pump
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Withdrawn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
EP83400405A
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English (en)
French (fr)
Inventor
R. Laumont
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.)
Hydroperfect International Inc
Original Assignee
Hydroperfect International Inc
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 Hydroperfect International Inc filed Critical Hydroperfect International Inc
Publication of EP0088674A1 publication Critical patent/EP0088674A1/de
Withdrawn legal-status Critical Current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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008—Enclosed motor pump units

Definitions

  • the present invention relates to assistance devices for vehicles and in particular devices implementing a hydraulic circuit. It extends to similar applications.
  • hydraulic assistance devices for vehicle steering mechanisms include a hydraulic pump permanently driven by the main engine of the vehicle, most often by a belt, this pump delivering in a pressure accumulator by l 'through a hydraulic circuit breaker.
  • the pump constantly discharges pressurized liquid which always returns to the tank even when the circuit breaker is tripped, this arrangement consumes significant energy, most of which is dissipated as heat.
  • the main engine of the vehicle must be running.
  • the flow rate of the pump is all the more important as the main engine of the vehicle rotates quickly while the power to be developed to assist the steering is highest when the engine rotates slowly, that is to say when the driver performs maneuvers at low speed, in particular parking maneuvers.
  • the invention solves the problem set out above by providing an electro-hydraulic group for servo devices, in particular for steering, braking, suspension and the like, comprising an electric motor directly coupled to the shaft of a hydraulic pump with gears which is characterized in that the motor and the pump have a common interface constituting a lateral cheek for the electric motor, this common interface being formed in one piece with the body of the hydraulic pump.
  • US Pat. No. 3,515,167 describes an electric motor mounted on the side of a plate which forms a support for the body of a hydraulic pump and for an envelope surrounding the body of the hydraulic pump and containing hydraulic fluid.
  • patent GB-A-987,587 describes an electric motor fixed by bolts to an intermediate part carrying bearings and a coupling used for driving a pump, itself fixed to the intermediate part.
  • Patent FR-A-81 03209 describes a fuel pump, the pump of which consists of a stack of pieces in the form of plates which are fixed to one side of an electric motor.
  • Patent FR - A - 73 40853 also relates to a group comprising a hydraulic pump fixed to a plate itself supporting the support of a hydraulic motor.
  • patent FR-73 37058 describes an electric pump for liquids with high electrical resistance directly driven by an electric motor. This is also the case of the patent DE 1,200,136 of which an electric motor is associated with a centrifugal fan wheel, of the patent US - A - 2,634,904 of which a vane pump is attached to a drive motor and of the patent FR 70 10782 which relates to a rotary pump.
  • Fig. 1 is a diagram of a vehicle steering assistance device applying the electro-hydraulic group of the invention.
  • Fig. 2 is a longitudinal sectional elevation of an embodiment of the electro-hydraulic group of the invention.
  • Fig. 3 is a front elevation seen along line III-III of FIG. 2.
  • Fig. 4 is a section taken on the line IV-IV of FIG. 2.
  • Fig. 5 is a sectional elevation similar to FIG. 2 of a variant.
  • Fig. 1 schematically shows a hydraulic assistance device for steering a vehicle.
  • This device comprises a double-acting hydraulic cylinder 1, the piston rod 2 of which controls the steering rods 3, 4.
  • the chambers of the hydraulic cylinder 1 are supplied in a manner known per se by a drawer distributor 5 actuated by a pinion 6 of the steering column.
  • the body of the distributor 5 is connected by a pipe 7 to a tank 8 containing a control liquid maintained under low pres sion, for example at atmospheric pressure and by a pipe 9 at the outlet of a hydraulic pump 10 which is short-circuited by a pressure relief valve 11 whose outlet 12 leads to the tank 8.
  • the hydraulic pump 10 is directly coupled to an electric motor 13.
  • Fig. 2 illustrates an advantageous embodiment according to which one of the lateral cheeks 14 of the electric motor 13 is formed from the body 15 of the hydraulic pump 10, that is to say that the electric motor and the pump comprise at least a common wall.
  • the body 15 and the cheek 14 are produced, for example, by molding, or by stamping, from non-magnetic metal.
  • the pump internally delimits a bore 16 in which are arranged two bearings 17 for the support of the gears 18, 19 of the pump.
  • the gears are mounted on shafts 20 and 21 inserted in the bearings 17.
  • the body 15 of the pump advantageously forms at its free end crimping lugs 22 of a cover 23.
  • Manufacturing by molding or stamping also makes it possible to form, on the one hand, reinforcement gussets 24 and, on the other hand, fixing studs 25 having housings 26 for the installation of bolts or screws.
  • the cheek 14 also forms a bearing 27 used for the establishment of the casing 28 forming the cylinder head of the electric motor.
  • the casing 28 is closed by a second cheek 29 which supports the various accessories of the engine as well as a bearing 30 for the shaft 31 of its rotor 32.
  • the rotor 32 is, moreover, supported in a second bearing 33 disposed in a stepped bore 34 formed in the rear part of the pump body 15.
  • the bore 34 contains, in its part 34a, a seal 35 and, in its part 34b, a connecting nut 36 for compensate for any misalignment between the shaft 31 of the electric motor and the shaft 20 of the hydraulic pump.
  • the pump body 15 also delimits a second stepped bore 37 preferably with frustoconical segments which communicates by channels 38 and 39 respectively with conduits 40 and 41 which are formed in the bearings 17 and which are respectively in communication with the end piece inlet 42 and the discharge nozzle 43 of the pump.
  • the frustoconical part 37a of larger diameter of the bore 37 contains a cartridge 44 which is internally provided with a spring 45 exerting a thrust force on a ball valve 46 thus maintained on its seat 47.
  • the spring is maintained by a crimped cover 48 and the cartridge is itself crimped by a flange 49 formed for this purpose in the side wall of the body 15 of the pump.
  • the embodiment described above shows that by the arrangement according to the invention the pressure relief valve 11 described with reference to FIG. 1 is completely integrated into the pump body 15 which at the same time forms one of the engine cheeks and part of the fixing pads of the electro-hydraulic group, the other fixing pads 25a being formed by the second cheek 29.
  • Fig. 5 illustrates a variant according to which the pump body 15 forms, as before, the cheek 14 of the motor and, moreover, an envelope 50 which completely surrounds the pump body 15.
  • the envelope 50 delimits with the pump body 15 produced exactly as described in the above a tank forming a tank 8a for the liquid under low pressure to supply the pump and the cylinder 1 illustrated in FIG. 1.
  • the envelope 50 is, for example, closed by a cover 51 which is crimped as illustrated in 52.
  • a seal 53 is advantageously disposed between the envelope 50 and the cover 51 which both can be provided with fins. cooling 54.
  • the envelope 50 also supports a filling base 55, the closing plug 56 of which is provided with a level detector 57.
  • the above arrangement is advantageous because it keeps the whole body of the pump at a uniform temperature, which eliminates any risk of differential expansion and ensures particularly safe operation for the hydraulic pump.
  • the casing 28 of the electric motor can be made watertight, the motor being constituted somewhat in the manner of the motors used in the heat transfer liquid accelerators of a central heating installation.
  • the motor casing can also constitute a reservoir for the tank for the circulation fluid of the pump.
  • the invention is not limited to the exemplary embodiments, shown and described in detail, since various modifica tions can be made without departing from its scope.
  • the drawing shows an electric motor with a wound motor, which constitutes only an illustration, the electric motor possibly also being a motor with a flat rotor or with a bell.
  • the motor can have a two-way rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Steering Mechanism (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Vehicle Body Suspensions (AREA)
EP83400405A 1982-03-04 1983-02-28 Elektro-hydraulische Einheit für Servolenkungsanlagen, insbesondere für Fahrzeuge Withdrawn EP0088674A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8203619A FR2522734B1 (fr) 1982-03-04 1982-03-04 Groupe electro-hydraulique et son application a l'assistance de dispositifs de direction, de freinage, de suspension et analogues, en particulier pour vehicules
FR8203619 1982-03-04

Publications (1)

Publication Number Publication Date
EP0088674A1 true EP0088674A1 (de) 1983-09-14

Family

ID=9271590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400405A Withdrawn EP0088674A1 (de) 1982-03-04 1983-02-28 Elektro-hydraulische Einheit für Servolenkungsanlagen, insbesondere für Fahrzeuge

Country Status (6)

Country Link
US (1) US4525126A (de)
EP (1) EP0088674A1 (de)
JP (1) JPS58164474A (de)
BR (1) BR8301046A (de)
ES (1) ES520204A0 (de)
FR (1) FR2522734B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738302A1 (fr) * 1995-08-30 1997-03-07 Hydroperfect Int Groupe electro-hydraulique compact
EP1052408A2 (de) * 1999-05-14 2000-11-15 MANNESMANN Aktiengesellschaft Gehäuseanordnung einer hydraulischen Pumpe und deren Antriebseinheit
DE102004021885A1 (de) * 2004-05-04 2005-12-01 Zf Lenksysteme Gmbh Rotations-Hydropumpe

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS626487U (de) * 1985-06-26 1987-01-16
JPH0772540B2 (ja) * 1988-04-27 1995-08-02 株式会社島津製作所 液圧装置
DE4120665A1 (de) * 1991-06-22 1992-12-24 Teves Gmbh Alfred Elektromotorisch angetriebene hydraulikpumpe
DE4234429A1 (de) * 1992-10-13 1994-04-14 Rexroth Mannesmann Gmbh Motor-Pumpen-Einheit
US5503542A (en) * 1995-01-13 1996-04-02 Copeland Corporation Compressor assembly with welded IPR valve
US5725362A (en) * 1995-05-09 1998-03-10 Xolox Corporation Pump assembly
DE19627405B4 (de) * 1996-07-06 2004-10-21 Zf Friedrichshafen Ag Pumpenanordnung
JPH1137060A (ja) * 1997-07-16 1999-02-09 Koyo Seiko Co Ltd ギヤポンプ
US7109003B2 (en) * 1998-12-23 2006-09-19 Abgenix, Inc. Methods for expressing and recovering human monoclonal antibodies to CTLA-4
DE10059423A1 (de) * 2000-11-30 2002-06-13 Bosch Gmbh Robert Vorrichtung zum Fördern von Flüssigkeiten, insbesondere Kraftstoff
GB0116424D0 (en) * 2001-07-04 2001-08-29 Univ Cambridge Tech Mechanical device
JP2003269345A (ja) * 2002-03-13 2003-09-25 Aisin Seiki Co Ltd 電動オイルポンプ
AT501235B1 (de) * 2004-11-23 2006-12-15 Hoerbiger Automatisierungstech Hydraulisches kombinationsaggregat
US20060196179A1 (en) * 2005-03-01 2006-09-07 Arun Kesavan Load-sensing integrated brake and fan hydraulic system
US8062010B2 (en) 2005-09-20 2011-11-22 Teleflex Canada Inc. Thermal expansion chambers for airtight containers
US10107347B2 (en) * 2016-05-19 2018-10-23 The Boeing Company Dual rack and pinion rotational inerter system and method for damping movement of a flight control surface of an aircraft
US10145434B2 (en) * 2016-05-19 2018-12-04 The Boeing Company Translational inerter assembly and method for damping movement of a flight control surface
US10088006B2 (en) * 2016-05-19 2018-10-02 The Boeing Company Rotational inerter and method for damping an actuator
US10781896B2 (en) * 2016-07-12 2020-09-22 Wagner Spray Tech Corporation Belt tightening mechanism for a fluid delivery system
CN107867323B (zh) * 2016-09-28 2019-11-22 比亚迪股份有限公司 电机油泵总成、转向系统和车辆

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634904A (en) * 1948-04-19 1953-04-14 Leonard F Clerc Combined refrigerating compressor and oil separator
US2678156A (en) * 1950-12-14 1954-05-11 Gomco Surgical Mfg Corp Rotary air compressor
GB987587A (en) * 1961-01-30 1965-03-31 Charlotte Vogel Improvements in gear pump assemblies
US3515167A (en) * 1968-08-22 1970-06-02 Ernest J Svenson Hydraulic and electrical power unit
FR2039095A5 (de) * 1969-04-01 1971-01-08 Toyoda Machine Works Ltd
DE1628216A1 (de) * 1967-03-16 1971-07-29 Borsig Gmbh Aus zwei Drehkolbenverdichtern bestehendes Aggregat
FR2070371A5 (de) * 1969-12-02 1971-09-10 Applic Mach Motrices
DE1628219A1 (de) * 1967-05-12 1971-11-25 Booth G Aus zwei Drehkolbenverdichtern und einem Elektromotor bestehendes Verdichteraggregat
FR2242885A5 (de) * 1973-09-04 1975-03-28 Cenco Inc
FR2248730A7 (en) * 1973-10-17 1975-05-16 Corona & Co Spa Immersed electric pump for oil - motor chamber communicates directly with pump exhaust zone
US4241484A (en) * 1978-11-07 1980-12-30 Chrysler Corporation Method for assembling a fuel pump and motor
FR2476222A1 (fr) * 1980-02-19 1981-08-21 Walbro Corp Pompe a carburant rotative a moteur electrique incorpore

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3014623A (en) * 1958-01-29 1961-12-26 Borg Warner Motor and pump mounting means
DE1553116B2 (de) * 1966-10-25 1971-07-15 Licentia Patent Verwaltungs GmbH, 6000 Frankfurt Elektromotorisch betriebene Zahnrad Ölpumpe
JPS5688982A (en) * 1979-12-19 1981-07-18 Hitachi Ltd Electromotive fuel supply pump
US4447192A (en) * 1980-02-19 1984-05-08 Walbro Corporation Self-contained rotary fuel pump

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634904A (en) * 1948-04-19 1953-04-14 Leonard F Clerc Combined refrigerating compressor and oil separator
US2678156A (en) * 1950-12-14 1954-05-11 Gomco Surgical Mfg Corp Rotary air compressor
GB987587A (en) * 1961-01-30 1965-03-31 Charlotte Vogel Improvements in gear pump assemblies
DE1628216A1 (de) * 1967-03-16 1971-07-29 Borsig Gmbh Aus zwei Drehkolbenverdichtern bestehendes Aggregat
DE1628219A1 (de) * 1967-05-12 1971-11-25 Booth G Aus zwei Drehkolbenverdichtern und einem Elektromotor bestehendes Verdichteraggregat
US3515167A (en) * 1968-08-22 1970-06-02 Ernest J Svenson Hydraulic and electrical power unit
FR2039095A5 (de) * 1969-04-01 1971-01-08 Toyoda Machine Works Ltd
FR2070371A5 (de) * 1969-12-02 1971-09-10 Applic Mach Motrices
FR2242885A5 (de) * 1973-09-04 1975-03-28 Cenco Inc
FR2248730A7 (en) * 1973-10-17 1975-05-16 Corona & Co Spa Immersed electric pump for oil - motor chamber communicates directly with pump exhaust zone
US4241484A (en) * 1978-11-07 1980-12-30 Chrysler Corporation Method for assembling a fuel pump and motor
FR2476222A1 (fr) * 1980-02-19 1981-08-21 Walbro Corp Pompe a carburant rotative a moteur electrique incorpore

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738302A1 (fr) * 1995-08-30 1997-03-07 Hydroperfect Int Groupe electro-hydraulique compact
EP0761970A1 (de) * 1995-08-30 1997-03-12 Hydroperfect International Hpi Kompakte elektrohydraulische Einheit
EP1052408A2 (de) * 1999-05-14 2000-11-15 MANNESMANN Aktiengesellschaft Gehäuseanordnung einer hydraulischen Pumpe und deren Antriebseinheit
EP1052408A3 (de) * 1999-05-14 2001-03-21 MANNESMANN Aktiengesellschaft Gehäuseanordnung einer hydraulischen Pumpe und deren Antriebseinheit
DE102004021885A1 (de) * 2004-05-04 2005-12-01 Zf Lenksysteme Gmbh Rotations-Hydropumpe
DE102004021885B4 (de) * 2004-05-04 2009-10-01 Zf Lenksysteme Gmbh Rotations-Hydropumpe

Also Published As

Publication number Publication date
ES8401196A1 (es) 1983-12-01
FR2522734B1 (fr) 1986-11-21
BR8301046A (pt) 1983-11-22
US4525126A (en) 1985-06-25
FR2522734A1 (fr) 1983-09-09
JPS58164474A (ja) 1983-09-29
JPH0315592B2 (de) 1991-03-01
ES520204A0 (es) 1983-12-01

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Inventor name: LAUMONT, R.