+

WO2003087576A1 - Hydraulic pump, particularly for a power-assisted steering system - Google Patents

Hydraulic pump, particularly for a power-assisted steering system Download PDF

Info

Publication number
WO2003087576A1
WO2003087576A1 PCT/EP2003/003637 EP0303637W WO03087576A1 WO 2003087576 A1 WO2003087576 A1 WO 2003087576A1 EP 0303637 W EP0303637 W EP 0303637W WO 03087576 A1 WO03087576 A1 WO 03087576A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic pump
pump according
housing
mounting plate
motor
Prior art date
Application number
PCT/EP2003/003637
Other languages
German (de)
French (fr)
Inventor
Dieter Fehlings
Original Assignee
Trw Automotive 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 Trw Automotive Gmbh filed Critical Trw Automotive Gmbh
Priority to AU2003227576A priority Critical patent/AU2003227576A1/en
Publication of WO2003087576A1 publication Critical patent/WO2003087576A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/062—Details, component parts
    • B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • 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
    • F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies

Definitions

  • Hydraulic pump in particular for a power steering system
  • the invention relates to a hydraulic pump, in particular for a power steering system.
  • Sealing housing encapsulated, which in turn is partially arranged within a fluid tank.
  • the object of the invention is to provide a hydraulic pump which is characterized by a simple and inexpensive construction.
  • a hydraulic pump for a power steering system with an outer housing, a pump housing and a motor housing, the outer housing serving as a reservoir for the hydraulic fluid to be pumped and the pump housing and the motor housing being arranged inside the outer housing so that they are surrounded by hydraulic fluid during operation.
  • This structure is based on the knowledge that the sealing housing that has been used so far is not required. In this way, components can be saved, the cooling problems for the drive motor of the pump are reduced and the assembly is easier.
  • the unit consisting of pump and drive motor is so compact that it is completely sunk in Hydraulic fluid can be arranged so that there is a very low profile.
  • an internal rotor electric motor is arranged in the motor housing.
  • An internal rotor electric motor is very compact, which is advantageous.
  • the motor housing is preferably attached to a mounting plate, which in turn is attached to the outer housing.
  • the mounting plate can advantageously combine several functions, namely a cooling function for the drive motor and a holding and cooling function for the control electronics of the electric motor.
  • the mounting plate can also serve as a holder for a plug for connecting the control electronics.
  • the mounting plate is preferably a cast part, in particular made of metal. This results in good heat conduction and high strength.
  • a filler neck can be arranged in the mounting plate, which has an annular cross-section at the level of the mounting plate. In this way, there is a large cross-section for filling with the hydraulic fluid with small dimensions in the radial direction.
  • the filler neck consists at least partially of a transparent material so that the fill level of the outer housing can always be checked without a separate sight glass.
  • Motor housing a centering design may be provided, for example a circumferential centering groove or a circumferential centering ring. The same applies to the mounting surface between the motor housing and the pump housing. This prevents misalignment.
  • a pressure connection is preferably formed on the mounting plate, to which a pressure hose is connected, which has an elastomer component. The elasticity of the pressure hose reduces pressure pulsations in the hydraulic fluid.
  • Pump housing and the motor housing are provided with several external fastening tabs so that they can be screwed together over a large radius. This increases the rigidity and precision of the
  • the pump has an intake port which is arranged on its underside. In this way, the hydraulic fluid is drawn in as deep as possible in the outer housing, which reduces the risk of sucking in air in extreme operating conditions.
  • the outer housing has a plurality of symmetrically arranged fastening eyes, so that it can be mounted in several orientations. This makes it possible to mount the hydraulic pump in several orientations in the vehicle without the
  • FIG. 1 is a schematic, partially sectioned side view of a hydraulic pump according to the invention.
  • FIG. 2 shows the hydraulic pump of Figure 1 in a schematic plan view.
  • the hydraulic pump contains an outer housing 10, which serves as a reservoir for a hydraulic fluid 12.
  • a pump housing 14 and a motor housing 16 are arranged in the interior of the outer housing 10.
  • An internal rotor electric motor is arranged in the motor housing 16 and can drive a hydraulic pump arranged in the pump housing 14.
  • the pump housing 14 and the motor housing 16 are each provided on their mutually facing sides with a plurality of external fastening tabs 18, through which a screw 20 extends in each case.
  • the use of external fastening tabs makes it possible to arrange the screws 20 on the largest possible radius, so that the screw connection has a high degree of stability.
  • a centering design (not shown) is also provided, which consists, for example, of a circumferential ring on the end face of the pump housing 14 and a circumferential, complementary groove on the end face of the motor housing 16. This ensures that the motor housing and the pump housing are securely mounted relative to each other without misalignment.
  • the motor housing 16 is attached to a mounting plate 22 which is a cast metal part. A centering design can also be used between the motor housing 16 and the mounting plate 22.
  • the mounting plate 22 is in turn attached to the outer housing 10 so that the unit consisting of the pump housing 14 and the motor housing 16 is fixedly attached to the inside of the outer housing 10.
  • the mounting plate 22 also serves to fasten plugs 24, by means of which the electric motor can be connected to a power supply and a control circuit. Control electronics for the electric motor are also arranged in the mounting plate 22, here symbolized by the "ECU” box. Since the mounting plate 22 is made of metal and thus has good heat conduction, it also serves as a cooling element both for the control electronics of the electric motor and, by heat conduction from the motor housing 16, for the electric motor.
  • a filler neck 26 is attached to the mounting plate 22.
  • this consists of a transparent material, for example a plastic hose, so that the filling level of the hydraulic fluid is clearly visible.
  • the filler neck In the area of the passage through the mounting plate 22, the filler neck has an annular section-shaped cross section (see FIG. 2), which nevertheless has a high flow cross section with a comparatively small dimension in the radial direction. This makes it possible to fill the outer housing 10 with a large volume of hydraulic fluid in a very short time when it is filled for the first time.
  • a funnel-like transition section is provided between the cross section of the filler neck 26 in the form of a ring section and the section of circular cross section consisting of a plastic tube.
  • a pressure connection 28 is provided in the mounting plate 22, for which a bore is produced in the mounting plate 22 by machining.
  • the pressure connection 28 can be formed at an advantageous location on the mounting plate 22. In this way, a single, standardized mounting plate can be used, in which, depending on the vehicle type, the pressure connection is drilled elsewhere.
  • a return connection 32 is arranged, by means of which the returning hydraulic fluid is returned to the hydraulic fluid supply.
  • an intake port 34 is provided, which is arranged on the underside of the pump housing 14. Since the suction port 34 is arranged on the one hand in the region of the bottom of the outer housing 10 and on the other hand is at a comparatively large distance from the return connection 32, the pump is calmed down with ease.
  • a ventilation opening 36 In the upper area of the pump housing 14 there is a ventilation opening 36 which ensures that any air that may be sucked in quickly leaves the pump housing again.
  • the mounting plate 22 is provided with four external fastening eyes 38, which are arranged symmetrically. In this way, the hydraulic pump can be mounted in four different orientations in the vehicle without having to make any design changes.
  • the construction described has the following advantages:
  • the pump, together with its drive motor, is completely surrounded by hydraulic fluid (with the exception of the side of the mounting plate 22). This serves both for cooling and for noise reduction. Since the hydraulic fluid completely fills the interior of the outer housing 10 and extends into the filler neck 26, it is reliably ensured in all operating positions and operating states that no air is sucked in. Since the motor together with the pump housing is arranged completely in the outer housing 10, the overall height is very low. Finally, there is little manufacturing effort, since the hydraulic pump consists of comparatively few individual parts. This also makes it possible to dispense with complicated cooling and sealing devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

Disclosed is a hydraulic pump for a power-assisted steering system, comprising an outer housing (10), a pump housing (14), and a motor housing (16). The outer housing (10) is used as a reservoir for the hydraulic fluid that is to be pumped. The pump housing (14) and the motor housing (16) are arranged inside the outer housing (10) such that said pump housing (14) and motor housing (16) are surrounded by the hydraulic fluid (12) in the operating state.

Description

Hydraulikpumpe, insbesondere für ein Servolenksystem Hydraulic pump, in particular for a power steering system
Die Erfindung betrifft eine Hydraulikpumpe, insbesondere für ein Servolenksystem.The invention relates to a hydraulic pump, in particular for a power steering system.
Die wesentlichen Bestandteile einer solchen Hydraulikpumpe sind die Pumpe als solche und der Antriebsmotor. Bei einer bekannten Hydraulikpumpe sind die Pumpe und der Antriebsmotor, die jeweils bereits ein eigenes Gehäuse aufweisen, in einemThe essential components of such a hydraulic pump are the pump as such and the drive motor. In a known hydraulic pump, the pump and the drive motor, each of which already has its own housing, are in one
Abdichrungsgehäuse verkapselt, das wiederum teilweise innerhalb eines Fluidtanks angeordnet ist.Sealing housing encapsulated, which in turn is partially arranged within a fluid tank.
Nachteilig bei dieser Bauweise sind der hohe Bauaufwand, die hohe Bauhöhe und die Schwierigkeiten, alle Teile mit der gewünschten Präzision zu montieren.Disadvantages of this design are the high construction costs, the high construction height and the difficulties in assembling all parts with the desired precision.
Die Aufgabe der Erfindung besteht darin, eine Hydraulikpumpe zu schaffen, die sich durch einen einfachen und kostengünstigen Aufbau auszeichnet.The object of the invention is to provide a hydraulic pump which is characterized by a simple and inexpensive construction.
Zu diesem Zweck ist erfindungsgemäß eine Hydraulikpumpe für ein Servolenksystem vorgesehen, mit einem Außengehäuse, einem Pumpengehäuse und einem Motorgehäuse, wobei das Außengehäuse als Vorratsbehälter für das zu pumpende Hydraulikfluid dient und wobei das Pumpengehäuse und das Motorgehäuse im Inneren des Außengehäuses angeordnet sind, so daß sie im Betrieb vom Hydraulikfluid umgeben sind. Dieser Aufbau beruht auf der Erkenntnis, daß das Abdichtungsgehäuse, das bisher verwendet wurde, nicht erforderlich ist. Auf diese Weise lassen sich Bauteile einsparen, verringern sich die Kühlungsprobleme für den Antriebsmotor der Pumpe und ergibt sich eine einfachere Montage. Die Einheit aus Pumpe und Antriebsmotor ist so kompakt, daß sie vollständig versenkt im Hydraulikfluid angeordnet werden kann, so daß sich eine sehr geringe Bauhöhe ergibt.For this purpose, according to the invention, a hydraulic pump for a power steering system is provided, with an outer housing, a pump housing and a motor housing, the outer housing serving as a reservoir for the hydraulic fluid to be pumped and the pump housing and the motor housing being arranged inside the outer housing so that they are surrounded by hydraulic fluid during operation. This structure is based on the knowledge that the sealing housing that has been used so far is not required. In this way, components can be saved, the cooling problems for the drive motor of the pump are reduced and the assembly is easier. The unit consisting of pump and drive motor is so compact that it is completely sunk in Hydraulic fluid can be arranged so that there is a very low profile.
Vorzugsweise ist vorgesehen, daß im Motorgehäuse ein Innenläufer-Elektromotor angeordnet ist. Ein Innenläufer-Elektromotor ist sehr kompakt, was vorteilhaft ist.It is preferably provided that an internal rotor electric motor is arranged in the motor housing. An internal rotor electric motor is very compact, which is advantageous.
Vorzugsweise ist das Motorgehäuse an einer Montageplatte angebracht, die wiederum an dem Außengehäuse angebracht ist. Die Montageplatte kann vorteilhafterweise mehrere Funktionen vereinen, nämlich eine Kühlfunktion für den Antriebsmotor und eine Halte- und Kühlfunktion für die Ansteuerelektronik des Elektromotors. Auch kann die Montageplatte als Halterung für einen Stecker zum Anschließen der Ansteuerelektronik dienen.The motor housing is preferably attached to a mounting plate, which in turn is attached to the outer housing. The mounting plate can advantageously combine several functions, namely a cooling function for the drive motor and a holding and cooling function for the control electronics of the electric motor. The mounting plate can also serve as a holder for a plug for connecting the control electronics.
Vorzugsweise ist die Montageplatte ein Gußteil, insbesondere aus Metall. Dies ergibt eine gute Wärmeleitung und eine hohe Festigkeit.The mounting plate is preferably a cast part, in particular made of metal. This results in good heat conduction and high strength.
In der Montageplatte kann ein Einfüllstutzen angeordnet sein, der auf Höhe der Montageplatte einen ringabschnittsförmigen Querschnitt hat. Auf diese Weise ergibt sich ein großer Querschnitt für die Befüllung mit dem Hydraulikfluid bei gleichzeitig geringen Abmessungen in radialer Richtung.A filler neck can be arranged in the mounting plate, which has an annular cross-section at the level of the mounting plate. In this way, there is a large cross-section for filling with the hydraulic fluid with small dimensions in the radial direction.
Der Einfüllstutzen besteht zumindest teilweise aus einem transparenten Material, so daß ohne separates Schauglas immer der Füllstand des Außengehäuses kontrolliert werden kann.The filler neck consists at least partially of a transparent material so that the fill level of the outer housing can always be checked without a separate sight glass.
Um die Montage zu vereinfachen, kann zwischen der Montageplatte und demTo simplify assembly, you can between the mounting plate and the
Motorgehäuse eine Zentriergestaltung vorgesehen sein, beispielsweise eine umlaufende Zentriernut oder eine umlaufender Zentrierring. Gleiches gilt für die Montagefläche zwischen dem Motorgehäuse und dem Pumpengehäuse. Auf diese Weise werden Ausrichtungsfehler vermieden. Vorzugsweise ist an der Montageplatte ein Druckanschluß gebildet, an den ein Druckschlauch angeschlossen ist, der einen Elastomeranteil aufweist. Die Elastizität des Druckschlauchs verringert Druckpulsationen im Hydraulikfluid.Motor housing a centering design may be provided, for example a circumferential centering groove or a circumferential centering ring. The same applies to the mounting surface between the motor housing and the pump housing. This prevents misalignment. A pressure connection is preferably formed on the mounting plate, to which a pressure hose is connected, which has an elastomer component. The elasticity of the pressure hose reduces pressure pulsations in the hydraulic fluid.
Es kann vorgesehen sein, den Druckanschluß durch eine Bohrung zu bilden, die durch spanende Bearbeitung erzeugt wurde. Auf diese Weise kann ein und dieselbe Montageplatte verwendet werden, die je nach Einbausituation an der entsprechenden Stelle gebohrt wird.It can be provided to form the pressure connection through a bore which was produced by machining. In this way, one and the same mounting plate can be used, which is drilled at the appropriate point depending on the installation situation.
Gemäß der bevorzugten Ausführungsform ist vorgesehen, daß dasAccording to the preferred embodiment it is provided that the
Pumpengehäuse und das Motorgehäuse mit mehreren außenliegenden Befestigungslaschen versehen sind, so daß sie miteinander auf einem großen Radius verschraubt werden können. Dies erhöht die Steifigkeit und die Präzision derPump housing and the motor housing are provided with several external fastening tabs so that they can be screwed together over a large radius. This increases the rigidity and precision of the
Verbindung zwischen dem Pumpengehäuse und dem Motorgehäuse.Connection between the pump housing and the motor housing.
Vorzugsweise ist vorgesehen, daß die Pumpe einen Ansaugstutzen aufweist, der auf ihrer Unterseite angeordnet ist. Auf diese Weise wird das Hydraulikfluid so tief wie möglich im Außengehäuse angesaugt, was das Risiko verringert, bei extremen Betriebsbedingungen Luft anzusaugen.It is preferably provided that the pump has an intake port which is arranged on its underside. In this way, the hydraulic fluid is drawn in as deep as possible in the outer housing, which reduces the risk of sucking in air in extreme operating conditions.
Gemäß der bevorzugten Ausführungsform ist vorgesehen, daß das Außengehäuse mehrere symmetrisch angeordnete Befestigungsaugen aufweist, so daß es in mehreren Ausrichtungen montiert werden kann. Dies ermöglicht es, die Hydraulikpumpe in mehreren Ausrichtungen im Fahrzeug zu montieren, ohne daß dieAccording to the preferred embodiment, it is provided that the outer housing has a plurality of symmetrically arranged fastening eyes, so that it can be mounted in several orientations. This makes it possible to mount the hydraulic pump in several orientations in the vehicle without the
Montageplatte geändert oder ein Adapter verwendet werden muß.Mounting plate changed or an adapter must be used.
Die Erfindung wird nachfolgend anhand einer bevorzugten Ausführungsform beschrieben, die in den beigefügten Zeichnungen dargestellt ist. In diesen zeigen:The invention is described below with reference to a preferred embodiment, which is illustrated in the accompanying drawings. In these show:
- Figur 1 eine schematische, teilgeschnittene Seitenansicht einer erfmdungs- gemäßen Hydraulikpumpe; und- Figure 1 is a schematic, partially sectioned side view of a hydraulic pump according to the invention; and
- Figur 2 die Hydraulikpumpe von Figur 1 in einer schematischen Draufsicht. Die Hydraulikpumpe enthält ein Außengehäuse 10, das als Vorratsbehälter für ein Hydraulikfluid 12 dient. Im Inneren des Außengehäuses 10 sind ein Pumpengehäuse 14 und ein Motorgehäuse 16 angeordnet. Im Motorgehäuse 16 ist ein Innenläufer- Elektromotor angeordnet, der eine im Pumpengehäuse 14 angeordnete Hydraulikpumpe antreiben kann. Das Pumpengehäuse 14 und das Motorgehäuse 16 sind an ihren einander zugewandten Seiten jeweils mit mehreren außenliegenden Befestigungslaschen 18 versehen, durch die hindurch sich jeweils eine Schraube 20 erstreckt. Die Verwendung von außenliegenden Befestigungslaschen ermöglicht es, die Schrauben 20 auf einen möglichst großen Radius anzuordnen, so daß die Verschraubung eine hohe Stabilität aufweist. Zwischen dem Pumpengehäuse 14 und dem Motorgehäuse 16 ist ferner eine (nicht dargestellte) Zentriergestaltung vorgesehen, die beispielsweise aus einem umlaufenden Ring auf der Stirnseite des Pumpengehäuses 14 und einer umlaufenden, komplementären Nut auf der Stirnseite des Motorgehäuses 16 besteht. Dies gewährleistet, daß das Motorgehäuse und das Pumpengehäuse relativ zueinander ohne Ausrichtungsfehler sicher montiert werden.- Figure 2 shows the hydraulic pump of Figure 1 in a schematic plan view. The hydraulic pump contains an outer housing 10, which serves as a reservoir for a hydraulic fluid 12. A pump housing 14 and a motor housing 16 are arranged in the interior of the outer housing 10. An internal rotor electric motor is arranged in the motor housing 16 and can drive a hydraulic pump arranged in the pump housing 14. The pump housing 14 and the motor housing 16 are each provided on their mutually facing sides with a plurality of external fastening tabs 18, through which a screw 20 extends in each case. The use of external fastening tabs makes it possible to arrange the screws 20 on the largest possible radius, so that the screw connection has a high degree of stability. Between the pump housing 14 and the motor housing 16, a centering design (not shown) is also provided, which consists, for example, of a circumferential ring on the end face of the pump housing 14 and a circumferential, complementary groove on the end face of the motor housing 16. This ensures that the motor housing and the pump housing are securely mounted relative to each other without misalignment.
Das Motorgehäuse 16 ist an einer Montageplatte 22 angebracht, die ein Metall- Gußteil ist. Auch zwischen dem Motorgehäuse 16 und der Montageplatte 22 kann eine Zentriergestaltung verwendet werden. Die Montageplatte 22 ist ihrerseits am Außengehäuse 10 befestigt, so daß die aus dem Pumpengehäuse 14 und dem Motorgehäuse 16 bestehende Einheit fest im Inneren des Außengehäuses 10 angebracht ist. Die Montageplatte 22 dient außerdem zur Befestigung von Steckern 24, mittels denen der Elektromotor an eine Stromversorgung und eine Steuerschaltung angeschlossen werden kann. In der Montageplatte 22 ist ferner eine Ansteuerelektronik für den Elektromotor angeordnet, hier symbolisiert durch den Kasten "ECU". Da die Montageplatte 22 aus Metall besteht und somit eine gute Wärmeleitung hat, dient sie gleichzeitig als Kühlelement sowohl für die Ansteuerelektronik des Elektromotors als auch, durch Wärmeleitung vom Motorgehäuse 16, für den Elektromotor. Zur Befüllung des Außengehäuses 10 ist an der Montageplatte 22 ein Einfüllstutzen 26 angebracht. Dieser besteht in seinem oberhalb der Montageplatte 22 liegenden Bereich aus einem transparenten Material, beispielsweise einem Kunststoffschlauch, so daß die Füllhöhe des Hydraulikfluids gut sichtbar ist. Im Bereich des Durchtritts durch die Montageplatte 22 hat der Einfüllstutzen einen ringabschnittsförmigen Querschnitt (siehe Figur 2), der bei vergleichsweise geringer Abmessung in radialer Richtung dennoch einen hohen Durchflußquerschnitt aufweist. Dies ermöglicht es, das Außengehäuse 10 bei der Erstbefüllung in sehr kurzer Zeit mit einem großen Volumen von Hydraulikfluid zu befüllen. Zwischen dem ringabschnittsfδrmigen Querschnitt des Einfüllstutzens 26 und dem aus einem Kunststoffschlauch bestehenden Abschnitt mit kreisförmigem Querschnitt ist ein trichterähnlicher Übergangsabschnitt vorgesehen.The motor housing 16 is attached to a mounting plate 22 which is a cast metal part. A centering design can also be used between the motor housing 16 and the mounting plate 22. The mounting plate 22 is in turn attached to the outer housing 10 so that the unit consisting of the pump housing 14 and the motor housing 16 is fixedly attached to the inside of the outer housing 10. The mounting plate 22 also serves to fasten plugs 24, by means of which the electric motor can be connected to a power supply and a control circuit. Control electronics for the electric motor are also arranged in the mounting plate 22, here symbolized by the "ECU" box. Since the mounting plate 22 is made of metal and thus has good heat conduction, it also serves as a cooling element both for the control electronics of the electric motor and, by heat conduction from the motor housing 16, for the electric motor. For filling the outer housing 10, a filler neck 26 is attached to the mounting plate 22. In its area above the mounting plate 22, this consists of a transparent material, for example a plastic hose, so that the filling level of the hydraulic fluid is clearly visible. In the area of the passage through the mounting plate 22, the filler neck has an annular section-shaped cross section (see FIG. 2), which nevertheless has a high flow cross section with a comparatively small dimension in the radial direction. This makes it possible to fill the outer housing 10 with a large volume of hydraulic fluid in a very short time when it is filled for the first time. A funnel-like transition section is provided between the cross section of the filler neck 26 in the form of a ring section and the section of circular cross section consisting of a plastic tube.
In der Montageplatte 22 ist ein Druckanschluß 28 vorgesehen, für den durch spanende Bearbeitung eine Bohrung in der Montageplatte 22 erzeugt wird. Der Druckanschluß 28 kann je nach Einbausituation der Hydraulikpumpe in ein Fahrzeug an einer jeweils vorteilhaften Stelle der Montageplatte 22 ausgebildet werden. Auf diese Weise kann eine einzige, standardisierte Montageplatte verwendet werden, bei der je nach Fahrzeugtyp der Druckanschluß an einer anderen Stelle gebohrt wird. An den Druckanschluß 28 schließt sich ein Druckschlauch 30 an, der einen Elastomeranteil enthält. Die auf diese Weise erzeugte Elastizität verringert Druckpulsationen im von der Pumpe bereitgestellten Hydraulikfluid.A pressure connection 28 is provided in the mounting plate 22, for which a bore is produced in the mounting plate 22 by machining. Depending on the installation situation of the hydraulic pump in a vehicle, the pressure connection 28 can be formed at an advantageous location on the mounting plate 22. In this way, a single, standardized mounting plate can be used, in which, depending on the vehicle type, the pressure connection is drilled elsewhere. A pressure hose 30, which contains an elastomer component, connects to the pressure connection 28. The elasticity generated in this way reduces pressure pulsations in the hydraulic fluid provided by the pump.
Im oberen Abschnitt des Außengehäuses 10 ist ein Rücklaufanschluß 32 angeordnet, mittels dem das rücklaufende Hydraulikfluid wieder dem Hydraulik- fluidvorrat zugeführt wird. Zum Ansaugen des Hydraulikfluids durch die Pumpe ist ein Ansaugstutzen 34 vorgesehen, der auf der Unterseite des Pumpengehäuses 14 angeordnet ist. Da der Ansaugstutzen 34 zum einen im Bereich des Bodens des Außengehäuses 10 angeordnet ist und zum anderen einen vergleichsweise großen Abstand zum Rücklaufanschluß 32 aufweist, ergibt sich ein beruhigtes Ansaugen der Pumpe. Im oberen Bereich des Pumpengehäuses 14 ist eine Entlüftungsöffnung 36 angeordnet, die gewährleistet, daß eventuell angesaugte Luft das Pumpengehäuse schnell wieder verläßt.In the upper section of the outer housing 10, a return connection 32 is arranged, by means of which the returning hydraulic fluid is returned to the hydraulic fluid supply. For the suction of the hydraulic fluid through the pump, an intake port 34 is provided, which is arranged on the underside of the pump housing 14. Since the suction port 34 is arranged on the one hand in the region of the bottom of the outer housing 10 and on the other hand is at a comparatively large distance from the return connection 32, the pump is calmed down with ease. In the upper area of the pump housing 14 there is a ventilation opening 36 which ensures that any air that may be sucked in quickly leaves the pump housing again.
Die Montageplatte 22 ist mit vier außenliegenden Befestigungsaugen 38 versehen, die symmetrisch angeordnet sind. Auf diese Weise kann die Hydraulikpumpe in vier verschiedenen Ausrichtungen im Fahrzeug montiert werden, ohne daß hierfür konstruktive Änderungen vorgenommen werden müssen.The mounting plate 22 is provided with four external fastening eyes 38, which are arranged symmetrically. In this way, the hydraulic pump can be mounted in four different orientations in the vehicle without having to make any design changes.
Durch die beschriebene Konstruktion ergeben sich die folgenden Vorteile: Die Pumpe ist zusammen mit ihrem Antriebsmotor vollständig (mit Ausnahme der Seite der Montageplatte 22) von Hydraulikfluid umgeben. Dieses dient sowohl zur Kühlung als auch zur Geräuschdämpfung. Da das Hydraulikfluid das Innere des Außengehäuses 10 vollständig ausfüllt und bis in den Einfüllstutzen 26 hinein steht, ist bei allen Betriebslagen und Betriebszuständen zuverlässig gewährleistet, daß keine Luft angesaugt wird. Da der Motor zusammen mit dem Pumpengehäuse vollständig im Außengehäuse 10 angeordnet ist, ergibt sich eine sehr geringe Bauhöhe. Schließlich ergibt sich ein geringer Herstellungsaufwand, da die Hydraulikpumpe aus vergleichsweise wenigen Einzelteilen besteht. Dies ermöglicht es auch, auf komplizierte Kühl- und Dichtvorrichtungen zu verzichten. The construction described has the following advantages: The pump, together with its drive motor, is completely surrounded by hydraulic fluid (with the exception of the side of the mounting plate 22). This serves both for cooling and for noise reduction. Since the hydraulic fluid completely fills the interior of the outer housing 10 and extends into the filler neck 26, it is reliably ensured in all operating positions and operating states that no air is sucked in. Since the motor together with the pump housing is arranged completely in the outer housing 10, the overall height is very low. Finally, there is little manufacturing effort, since the hydraulic pump consists of comparatively few individual parts. This also makes it possible to dispense with complicated cooling and sealing devices.

Claims

Patentansprüche claims
1. Hydraulikpumpe für ein Servolenksystem, mit einem Außengehäuse (10), einem Pumpengehäuse (14) und einem Motorgehäuse (16), wobei das Außengehäuse (10) als Vorratsbehälter für das zu pumpende Hydraulikfluid dient und wobei das Pumpengehäuse (14) und das Motorgehäuse (16) im1. Hydraulic pump for a power steering system, with an outer housing (10), a pump housing (14) and a motor housing (16), the outer housing (10) serving as a reservoir for the hydraulic fluid to be pumped and wherein the pump housing (14) and the motor housing (16) in
Inneren des Außengehäuses (10) angeordnet sind, so daß sie im Betrieb vom Hydraulikfluid (12) umgeben sind.Inside of the outer housing (10) are arranged so that they are surrounded by the hydraulic fluid (12) during operation.
2. Hydraulikpumpe nach Anspruch 1, dadurch gekennzeichnet, daß im Motorgehäuse (16) ein Innenläufer-Elektromotor angeordnet ist.2. Hydraulic pump according to claim 1, characterized in that an internal rotor electric motor is arranged in the motor housing (16).
3. Hydraulikpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Motorgehäuse (16) an einer Montageplatte (22) angebracht ist, die wiederum an dem Außengehäuse (10) angebracht ist.3. Hydraulic pump according to one of the preceding claims, characterized in that the motor housing (16) is attached to a mounting plate (22) which in turn is attached to the outer housing (10).
4. Hydraulikpumpe nach Anspruch 3, dadurch gekennzeichnet, daß an der Montageplatte (22) die Ansteuerelektronik für den Elektromotor angeordnet ist.4. Hydraulic pump according to claim 3, characterized in that the control electronics for the electric motor is arranged on the mounting plate (22).
5. Hydraulikpumpe nach Anspruch 3 oder Anspruch 4, dadurch gekennzeichnet, daß an der Montageplatte (22) ein Stecker (24) zum Anschluß der Ansteuerelektronik angebracht ist.5. Hydraulic pump according to claim 3 or claim 4, characterized in that a connector (24) is attached to the mounting plate (22) for connecting the control electronics.
6. Hydraulikpumpe nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß die Montageplatte (22) ein Gußteil ist.6. Hydraulic pump according to one of claims 3 to 5, characterized in that the mounting plate (22) is a casting.
7. Hydraulikpumpe nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die Montageplatte (22) aus Metall besteht.7. Hydraulic pump according to one of claims 3 to 6, characterized in that the mounting plate (22) consists of metal.
8. Hydraulikpumpe nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß in der Montageplatte (22) ein Einfüllstutzen (26) angeordnet ist. 8. Hydraulic pump according to one of claims 3 to 7, characterized in that a filler neck (26) is arranged in the mounting plate (22).
9. Hydraulikpumpe nach Anspruch 8, dadurch gekennzeichnet, daß der Einfüllstutzen (26) auf Höhe der Montageplatte (22) einen ringabschnitts- formigen Querschnitt hat.9. Hydraulic pump according to claim 8, characterized in that the filler neck (26) at the level of the mounting plate (22) has an annular section-shaped cross section.
10. Hydraulikpumpe nach Anspruch 8 oder Anspruch 9, dadurch gekennzeichnet, daß der Einfüllstutzen (26) zumindest teilweise aus einem transparenten10. Hydraulic pump according to claim 8 or claim 9, characterized in that the filler neck (26) at least partially made of a transparent
Material besteht.Material exists.
11. Hydraulikpumpe nach einem der Ansprüche 3 bis 10, dadurch gekennzeichnet, daß die Montageplatte (22) als Kühlplatte für den Elektromotor und die Ansteuerelektronik dient.11. Hydraulic pump according to one of claims 3 to 10, characterized in that the mounting plate (22) serves as a cooling plate for the electric motor and the control electronics.
12. Hydraulikpumpe nach einem der Ansprüche 3 bis 11, dadurch gekennzeichnet, daß zwischen der Montageplatte (22) und dem Motorgehäuse (16) eine Zentriergestaltung vorgesehen ist, beispielsweise eine umlaufende Zentriernut oder eine umlaufender Zentrierring.12. Hydraulic pump according to one of claims 3 to 11, characterized in that a centering design is provided between the mounting plate (22) and the motor housing (16), for example a circumferential centering groove or a circumferential centering ring.
13. Hydraulikpumpe nach einem der Ansprüche 3 bis 12, dadurch gekennzeichnet, daß an der Montageplatte ein Druckanschluß (28) gebildet ist, an den ein Druckschlauch (30) angeschlossen ist, der einen Elastomeranteil aufweist.13. Hydraulic pump according to one of claims 3 to 12, characterized in that a pressure connection (28) is formed on the mounting plate, to which a pressure hose (30) is connected, which has an elastomer component.
14. Hydraulikpumpe nach Anspruch 13, dadurch gekennzeichnet, daß der Druckanschluß (28) durch eine Bohrung gebildet ist, die durch spanende Bearbeitung erzeugt wurde.14. Hydraulic pump according to claim 13, characterized in that the pressure connection (28) is formed by a bore which was produced by machining.
15. Hydraulikpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen dem Motorgehäuse (16) und dem Pumpengehäuse (14) eine Zentriergestaltung vorgesehen ist, beispielsweise eine umlaufende Zentriernut oder eine umlaufender Zentrierring.15. Hydraulic pump according to one of the preceding claims, characterized in that a centering design is provided between the motor housing (16) and the pump housing (14), for example a circumferential centering groove or a circumferential centering ring.
16. Hydraulikpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Pumpengehäuse (14) und das Motorgehäuse (16) mit mehreren außenliegenden Befestigungslaschen (18) versehen sind, so daß sie miteinander auf einem großen Radius verschraubt werden können.16. Hydraulic pump according to one of the preceding claims, characterized in that the pump housing (14) and the motor housing (16) with several external fastening tabs (18) are provided so that they can be screwed together over a large radius.
17. Hydraulikpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Pumpe einen Ansaugstutzen (34) aufweist, der auf ihrer Unterseite angeordnet ist.17. Hydraulic pump according to one of the preceding claims, characterized in that the pump has an intake port (34) which is arranged on its underside.
18. Hydraulikpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß am oberen Abschnitt des Pumpengehäuses (14) eine Entlüftungsöffhung (36) angeordnet ist.18. Hydraulic pump according to one of the preceding claims, characterized in that a vent opening (36) is arranged on the upper section of the pump housing (14).
19. Hydraulikpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Außengehäuse (10) mehrere symmetrisch angeordnete Befestigungsaugen (38) aufweist, so daß es in mehreren Ausrichtungen montiert werden kann.19. Hydraulic pump according to one of the preceding claims, characterized in that the outer housing (10) has a plurality of symmetrically arranged fastening eyes (38) so that it can be mounted in several orientations.
20. Hydraulikpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß im Außengehäuse (10) ein Rücklaufanschluß (32) angeordnet ist. 20. Hydraulic pump according to one of the preceding claims, characterized in that a return connection (32) is arranged in the outer housing (10).
PCT/EP2003/003637 2002-04-16 2003-04-08 Hydraulic pump, particularly for a power-assisted steering system WO2003087576A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227576A AU2003227576A1 (en) 2002-04-16 2003-04-08 Hydraulic pump, particularly for a power-assisted steering system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20205936U DE20205936U1 (en) 2002-04-16 2002-04-16 Hydraulic pump, in particular for a power steering system
DE20205936.7 2002-04-16

Publications (1)

Publication Number Publication Date
WO2003087576A1 true WO2003087576A1 (en) 2003-10-23

Family

ID=7970106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/003637 WO2003087576A1 (en) 2002-04-16 2003-04-08 Hydraulic pump, particularly for a power-assisted steering system

Country Status (3)

Country Link
AU (1) AU2003227576A1 (en)
DE (1) DE20205936U1 (en)
WO (1) WO2003087576A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1647466A1 (en) * 2004-10-13 2006-04-19 TRW Automotive Electronics & Components GmbH & Co. KG Hydraulic system for providing auxilliary power in an apparatus for a vehicle
WO2006103199A1 (en) * 2005-04-01 2006-10-05 Paul-Heinz Wagner Hydraulic group
WO2009030793A1 (en) * 2007-08-27 2009-03-12 Romeral Cabeza, Angel Pressure-intensifying mechanism

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256189A1 (en) * 2002-12-02 2004-06-17 Cornelius Peter Hydraulic unit for driving automobile power steering system, has stator provided with two vertical channels coaxial to motor shaft
DE20302534U1 (en) 2003-02-17 2003-06-18 TRW Fahrwerksysteme GmbH & Co. KG, 40547 Düsseldorf Motor-pump assembly
DE102004003931B4 (en) * 2004-01-26 2015-06-18 Volkswagen Ag Hydraulic circuit or method for controlling a pressure and / or a volume flow of a hydraulic medium in a hydraulic circuit, in particular for a dual-clutch transmission of a motor vehicle
DE102005045403A1 (en) * 2005-09-23 2007-04-12 Robert Bosch Gmbh Pressure system e.g. for braking force boost and air-bag inflation safety functions in vehicle industry, has pressure generating device mounted within pressure reservoir
DE102007053263A1 (en) * 2007-11-08 2009-05-14 Trw Automotive Gmbh Electrohydraulic vehicle steering system for use in heavy vehicle e.g. heavy passenger car, has housing attached to hydraulic circuit and filled with hydraulic fluid that passes through housing during operation of pump
CN103603835A (en) * 2013-11-19 2014-02-26 阜新德尔汽车部件股份有限公司 Hydraulic reservoir for elector-hydraulic power steering systems
CN106015200A (en) * 2016-07-13 2016-10-12 哈威油液压技术（上海）有限公司 Plunger-type compact hydraulic pump station
CN106015167A (en) * 2016-07-13 2016-10-12 哈威油液压技术（上海）有限公司 Hydraulic pump station of gear pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594056A (en) * 1979-09-11 1986-06-10 Heilmeier & Weinlein, Fabrik Fur Oel-Hydraulik Gmbh & Co., Kg Hydraulic pump unit
US5596970A (en) * 1996-03-28 1997-01-28 Ford Motor Company Fuel pump for an automotive fuel delivery system
US6132184A (en) * 1998-11-05 2000-10-17 Ford Motor Company Reservoir apparatus for an electronically controlled electric pump
US6290474B1 (en) * 1998-11-25 2001-09-18 Still, Gmbh Machine hydraulic system
DE10022174A1 (en) * 2000-05-06 2001-11-08 Kroell Hydrotechnik Kg Pump unit with electric motor and driven feed pump, includes carrier plate as sealing cover for pump housing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19859340C2 (en) 1998-12-22 2003-02-06 Siemens Ag Electro-hydraulic unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594056A (en) * 1979-09-11 1986-06-10 Heilmeier & Weinlein, Fabrik Fur Oel-Hydraulik Gmbh & Co., Kg Hydraulic pump unit
US5596970A (en) * 1996-03-28 1997-01-28 Ford Motor Company Fuel pump for an automotive fuel delivery system
US6132184A (en) * 1998-11-05 2000-10-17 Ford Motor Company Reservoir apparatus for an electronically controlled electric pump
US6290474B1 (en) * 1998-11-25 2001-09-18 Still, Gmbh Machine hydraulic system
DE10022174A1 (en) * 2000-05-06 2001-11-08 Kroell Hydrotechnik Kg Pump unit with electric motor and driven feed pump, includes carrier plate as sealing cover for pump housing

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1647466A1 (en) * 2004-10-13 2006-04-19 TRW Automotive Electronics & Components GmbH & Co. KG Hydraulic system for providing auxilliary power in an apparatus for a vehicle
JP2006115686A (en) * 2004-10-13 2006-04-27 Trw Automot Electronics & Components Gmbh & Co Kg Fluid pressure device for offering auxiliary power for vehicle device
WO2006103199A1 (en) * 2005-04-01 2006-10-05 Paul-Heinz Wagner Hydraulic group
JP2008534850A (en) * 2005-04-01 2008-08-28 ワグナー ポール−ハインツ hydraulic unit
EP2385252A1 (en) * 2005-04-01 2011-11-09 Wagner Vermögensverwaltungs-GmbH & Co. KG Hydraulic assembly
US8220380B2 (en) 2005-04-01 2012-07-17 Wagner Vermögensverwaltungs-GmbH & Co. KG Hydraulic unit
WO2009030793A1 (en) * 2007-08-27 2009-03-12 Romeral Cabeza, Angel Pressure-intensifying mechanism

Also Published As

Publication number Publication date
AU2003227576A1 (en) 2003-10-27
DE20205936U1 (en) 2002-08-22

Similar Documents

Publication Publication Date Title
WO2003087576A1 (en) Hydraulic pump, particularly for a power-assisted steering system
DE102020104241A1 (en) Electric oil pump
EP3320210B1 (en) Hydraulic unit
DE4239575C2 (en) Silencers for pneumatic pumps, in particular vane pumps in motor vehicles
DE102020212685A1 (en) Device for supplying oil to an electric machine and electric machine comprising a device for supplying oil
DE69508153T2 (en) Pump unit
DE102017127675B4 (en) Hydraulic pressure supply unit
DE19647967B4 (en) Pump with pressure difference sensor
DE102020106849A1 (en) Liquid pump, in particular for supplying a transmission of an electric or hybrid drive module of a motor vehicle
DE102004025450A1 (en) Oil pan for an engine and / or a transmission
EP4198260A1 (en) Screw spindle pump
EP2205868B1 (en) Pump, particularly for a hydraulic unit of an electronically controlled vehicle brake unit
DE10154552A1 (en) Fuel pump device for a fuel system of an internal combustion engine and fuel system
DE102007020002B4 (en) gear pump
DE10301613B4 (en) Motor-pump unit
DE20005247U1 (en) Centrifugal pump unit
EP1710434B1 (en) Compact hydraulic pumping unit
EP3762607B1 (en) Pump apparatus for a system housing in a vehicle
DE20312318U1 (en) Liquid filter for an internal combustion engine
DE102023128882B3 (en) Oil chamber cover for a housing for an electrical machine, housing for an electrical machine, electrical machine and motor vehicle
EP0999365B1 (en) Hydraulic motor-pump unit
DE19859286A1 (en) Compact hydraulic arrangement for motor vehicles with valve block functions integrated in bearing shield for drive engine
DE102022110465A1 (en) Housing component with integrated electrical conductor track and electrical drive system
EP0964160A2 (en) Liquid ring pump
DE102023116638A1 (en) Hydraulic pump for a drive train of a motor vehicle and transmission with such a hydraulic pump

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载