EP2909479A1 - Internal gear pump - Google Patents

Internal gear pump

Info

Publication number
EP2909479A1
EP2909479A1 EP13753160.4A EP13753160A EP2909479A1 EP 2909479 A1 EP2909479 A1 EP 2909479A1 EP 13753160 A EP13753160 A EP 13753160A EP 2909479 A1 EP2909479 A1 EP 2909479A1
Authority
EP
European Patent Office
Prior art keywords
internal gear
gear pump
pump
hydraulic
cartridge
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Withdrawn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
EP13753160.4A
Other languages
German (de)
French (fr)
Inventor
Harald Speer
Rene Schepp
Edgar Kurz
Norbert Alaze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2909479A1 publication Critical patent/EP2909479A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/148—Arrangements for pressure supply
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
    • B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes

Definitions

  • Internal gear pump The invention relates to an internal gear pump for a hydraulic vehicle brake system having the features of the preamble of claim 1.
  • Such internal gear pumps are used instead of commonly used piston pumps in slip-controlled and / or external power vehicle brake systems, and often, even if not necessarily aptly referred to as return pumps.
  • Internal gear pumps are known. They have a ring gear and an eccentrically arranged in the ring gear pinion on a peripheral portion with the
  • Ring gear meshes.
  • the ring gears are internally toothed gears, the pinion externally toothed gears, the ring gear and the pinion can also be considered as gears of the internal gear pumps.
  • the name as pinion and as a ring gear is their distinction.
  • Ring gear and the pinion which is referred to here as the pump chamber.
  • a separator is arranged, against the outside and inside of the tooth heads of the two gears and divides the pump room into a suction chamber and into a pressure chamber.
  • the separator is often referred to as sickle or sickle due to its typical shape. Another name for the
  • the published patent application DE 10 2009 047 626 A1 discloses an internal gear pump for a hydraulic vehicle brake system, which does not have its own housing, but which is installed in a hydraulic block of a slip control of a hydraulic vehicle brake system.
  • the hydraulic block can be considered as the housing of the internal gear pump.
  • Such hydraulic blocks serve the mechanical attachment and hydraulic interconnection of hydraulic components of a slip control. Such components are except internal gear pumps solenoid valves and hydraulic accumulator for the slip control.
  • the hydraulic block is usually a cuboid part made of metal, in particular of aluminum, in the cylindrical and often diameter-graded countersinks as receptacles for the hydraulic components of the slip control and holes that hydraulically connect the recordings or built-in components, attached.
  • the internal gear pump according to the invention with the features of claim 1 is designed as a preassembled module and has a cartridge as a housing which is insertable into a receptacle for the internal gear pump, in particular in a hydraulic block slip control of a hydraulic vehicle brake system. Due to the design as an assembly, the internal gear pump according to the invention can be handled as a single component, which simplifies their assembly and in particular the insertion into the receptacle. Another advantage of the invention is the ability to check the internal gear pump after its pre-assembly as an assembly and even before insertion into the receptacle on their functionality and (pressure) tightness. In mass production, usually press-in and caulking processes are used which do not allow removal and replacement.
  • the internal gear pump In case of error, the internal gear pump is rejected. If an internal gear pump is already in a hydraulic Raulikblock installed, in case of failure, not only the internal gear pump, but also the hydraulic block with the built-hydraulic components as a whole Committee. Under a cartridge, the housing of the internal gear pump is to be understood, which is formed on the outside corresponding to the receptacle so that it is accurately inserted into the receptacle.
  • a preferred embodiment of the invention can be found in claim 6, the object of which is a double internal gear pump with two internal gear pumps according to the invention, each of which is provided for a brake circuit of a hydraulic two-circuit vehicle brake system.
  • the two internal gear pumps are arranged separately from each other in two receptacles of a housing and have a common drive, for example by means of a gear.
  • the housing with the two receptacles for the two internal gear pumps is referred to as a housing to distinguish it from the housings of designed as pre-assembled assemblies internal gear pump.
  • a hydraulic block forms the housing or housing for the two internal gear pumps.
  • the internal gear pump according to the invention is provided in particular as a hydraulic pump for a hydraulic, slip-controlled and / or third-party vehicle brake system instead of a piston pump commonly used.
  • hydraulic pumps are also referred to as return pumps.
  • the preferred embodiment as a double internal gear pump according to the invention is as already said provided for a two-circuit vehicle brake system with a gear pump for each brake circuit.
  • Figure 1 is an internal gear pump according to the invention in a perspective view
  • FIG. 2 shows the internal gear pump from FIG. 1 with opposite viewing direction
  • FIG. 3 is a perspective view of a hydraulic block with two receptacles for two internal gear pumps from FIGS. 1 and 2;
  • Figure 4 shows the hydraulic block of Figure 3 with built-in Certainlyberg- wheel pumps according to the invention.
  • Figures 1 and 2 show an inventive internal gear pump 1 for a hydraulic vehicle brake system.
  • the internal gear pump has a cylindrical, one-sided open housing 2, which is designed as a cartridge for insertion into a still to be explained recording.
  • the cartridge 3 In a longitudinal center, the cartridge 3 has a circumferential groove into which a sealing ring 4, in the embodiment, an O-ring is inserted.
  • a coaxially arranged in the cartridge 3 and rotatably mounted in their ring gear 5 and an eccentrically arranged in the ring gear 5 pinion 6 of the internal gear pump 1 can be seen, which meshes with the ring gear 5.
  • the pinion 6 is an externally toothed gear and the ring gear 5 an internally toothed gear, which are referred to differentiation as pinion 6 and as a ring gear 5.
  • a crescent-shaped, here as a pump chamber 7 designated clearance between the pinion 6 and the ring gear 5 can be seen in the open end of the cartridge 3.
  • the visible end of the pump chamber 7 is a suction chamber 8, in which the internal gear pump 1 sucks brake fluid.
  • An arranged in the pump chamber 7 separator which divides the pump chamber 7 in the suction chamber 8 and a non-visible pressure chamber at the other end of the pump chamber 7 is shown in the drawing not visible.
  • the pinion 6 is non-rotatably mounted on a pump shaft 9, which is sealed off by the closed end of the housing 2 of the internal gear pump 1 forming cartridge 3 is performed.
  • the internal gear pump 1 has a toothed wheel as the drive wheel 10, which is arranged on the outside of the closed side of the cartridge 3 and is mounted there on the pump shaft 9 in a torque-proof manner.
  • Axialusionn 1 1 are arranged, which bear against the pinion 6, the ring gear 5 and the separator.
  • the axial discs 1 1 are axially movable and rotationally fixed, they cover the non-visible pressure chamber and the non-visible separator and are recessed in the region of the suction chamber 8. Such axial discs are also referred to as pressure or as control discs or plates.
  • the axial discs 1 1 so-called. Pressure fields 12, which are enclosed by a pressure field seal 13.
  • the pressure fields 12 are flat, in the illustrated embodiment kidney-shaped depressions which extend approximately over the pressure chamber and the separator. Pressurization of the pressure fields 12 acts on the axial discs 1 1 in sealing contact with the pinion 6, the ring gear 5 and the separator.
  • the pressure fields 12 have a through hole 14, through which they communicate with the pressure chamber of the internal gear pump 1.
  • the facing in Figure 1 a viewer axial disc 1 1 is exposed, i. its the pinion 6, the ring gear 5 and the separator facing away from the outside is not covered, in the embodiment, it is located approximately flush in a plane with the open end of the cartridge 3, which forms the housing 2 of the internal gear pump 1.
  • the internal gear pump 1 is preassembled as an assembly in the cartridge 3, which forms the housing 2 of the internal gear pump 1.
  • Pre-assembly as an assembly allows the internal gear group 1 to be handled and installed like a unified component, and it also has a functional and sealing capability. It is possible to check the integrity of the internal gear pump 1 pre-assembled before assembly.
  • FIG. 3 shows a hydraulic block 15 of an otherwise not shown slip control of a hydraulic vehicle brake system.
  • the hydraulic block 15 is a hydraulic block 15 of an otherwise not shown slip control of a hydraulic vehicle brake system.
  • 15 is a block-shaped part made of aluminum, in which countersinks as receptacles
  • the hydraulic block 15 has u.a. Receivers 16 for two of the internal gear pumps 1 shown in Figures 1 and 2 and not shown for solenoid valves and hydraulic accumulator. To see in Figure 1 two more countersinks than terminals 17 of a dual-circuit master cylinder, not shown. The other recordings are located on the lower side in the drawing of the hydraulic block 15 and are therefore not visible.
  • the hydraulic block 15 has two receptacles 16 for two internal gear pumps 1, which are designed as congruent to the cartridges 3 cylindrical countersinks, in which the internal gear pumps 1 as shown in Figure 4 can be accurately used.
  • the drive wheels 10 When inserting the open side of the cartridge 3 with the exposed axial disc 1 1 faces a bottom of the receptacles 16, the drive wheels 10 are in open sides of the receptacles 16 so that they can be seen as shown in Figure 4, accessible.
  • the sealing ring 4 in the groove of the cartridge 3 seals the internal gear pumps 1 in the receptacles 16 in the hydraulic block 15.
  • the exposed axial disc 1 1 is located at the bottom of the receptacle 16, the pressure field seal 13 is sealingly against the bottom of the receptacle 16.
  • a pressure port hole 18 and a suction port hole 19 In the bottom of the receptacles 16 for the internal gear pump 1 open a pressure port hole 18 and a suction port hole 19.
  • the pressure port hole 18 opens into the pressure field 12 of the exposed axial disc 1 1 in the open side of the cartridge 3, the housing 2 of the internal gear pump. 1 forms.
  • Through the through hole 14 in the axial disc 1 1 and the pressure pad 12 communicates the pressure chamber of the internal gear pump 1 with the respective pressure port bore 18 which is sealed together with the pressure pad 12 through the pressure field seal 13.
  • the suction connection bore 19 opens into the region which is recessed by the axial disk 1 1, so that the suction connection bore 19 with the
  • Suction chamber 8 of the internal gear pump 1 communicates.
  • One suction and one pressure Connection of the internal gear pumps 1 is accomplished in this way by the insertion of the internal gear pumps 1 in the receptacles 16 in the hydraulic block 15 including the sealing of the terminals.
  • the hydraulic block 15 forms a housing of the two internal gear pumps 1 and is referred to here as a housing for differentiation from the cartridges 3, which also form a housing 2 of the internal gear pumps 1.
  • the surrounding housing forming hydraulic block 15 the two pre-assembled as assemblies internal gear pump 1 with its housing 2 forming cartridges 3 are added.
  • the internal gear pumps 1 are fastened in the receptacles 16, for example by caulking.
  • the two internal gear pumps 1 are driven together with an electric motor 20 to which, if necessary, a gear is flanged.
  • the electric motor 20 is placed on the receptacles 16, in which the two internal gear pumps 1 are inserted, and for example screwed to the hydraulic block 15.
  • the electric motor 20 has a gearwheel 21 here designated as the gear wheel, which is located between the drive wheels 10 of the two internal gear pumps 1 and with two drive wheels 10 meshes when the electric motor 20 is fixed to the hydraulic block 15.
  • To secure the position of the electric motor 20 has two projections 22 on both sides of the drive wheel 21, which are congruent to the mouths of the receptacles 16 for the internal gear pumps 1 and precisely fit into the receptacles 16 via the drive wheels 10.
  • the projections 22 are formed on a flange plate 23 of the electric motor 20, which serves to secure the electric motor 20 to the hydraulic block 15.
  • the position assurance can be made by a not shown coaxially or behind the drive wheel 21 diameter, which engages accurately into the central bore of the hydraulic block 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

The invention relates to an internal gear pump (1) as a hydraulic pump for a slip-controlled vehicle braking system. According to the invention, the internal gear pump (1) is designed as an assembly, which can be pre-assembled, having a cartridge (3) as a casing (2), which assembly can be inserted in a receptacle in a hydraulic block of the vehicle braking system.

Description

Beschreibung  description
Titel title
Innenzahnradpumpe Die Erfindung betrifft eine Innenzahnradpumpe für eine hydraulische Fahrzeugbremsanlage mit den Merkmalen des Oberbegriffs des Anspruchs 1 . Solche In- nenzahnradpumpen werden anstelle von üblicherweise verwendeten Kolbenpumpen in schlupfgeregelten und/oder Fremdkraft-Fahrzeugbremsanlagen eingesetzt, und oft, auch wenn nicht unbedingt treffend, als Rückförderpumpen be- zeichnet.  Internal gear pump The invention relates to an internal gear pump for a hydraulic vehicle brake system having the features of the preamble of claim 1. Such internal gear pumps are used instead of commonly used piston pumps in slip-controlled and / or external power vehicle brake systems, and often, even if not necessarily aptly referred to as return pumps.
Stand der Technik State of the art
Innenzahnradpumpen sind bekannt. Sie weisen ein Hohlrad und ein im Hohlrad exzentrisch angeordnetes Ritzel auf, das auf einem Umfangsabschnitt mit demInternal gear pumps are known. They have a ring gear and an eccentrically arranged in the ring gear pinion on a peripheral portion with the
Hohlrad kämmt. Die Hohlräder sind innenverzahnte Zahnräder, die Ritzel außenverzahnte Zahnräder, das Hohlrad und das Ritzel können auch als Zahnräder der Innenzahnradpumpen aufgefasst werden. Die Bezeichnung als Ritzel und als Hohlrad dient ihrer Unterscheidung. Dem Umfangsabschnitt, auf dem die Zahn- räder kämmen, gegenüber besteht ein sichelförmiger Freiraum zwischen demRing gear meshes. The ring gears are internally toothed gears, the pinion externally toothed gears, the ring gear and the pinion can also be considered as gears of the internal gear pumps. The name as pinion and as a ring gear is their distinction. There is a crescent-shaped space between the circumference section, on which the toothed wheels mesh
Hohlrad und dem Ritzel, der hier als Pumpenraum bezeichnet wird. Im Pumpenraum ist ein Trennstück angeordnet, an dem außen und innen Zahnköpfe der beiden Zahnräder anliegen und das den Pumpenraum in einen Saugraum und in einen Druckraum teilt. Das Trennstück wird aufgrund seiner typischen Form oft auch als Sichel oder Sichelstück bezeichnet. Eine weitere Bezeichnung für dasRing gear and the pinion, which is referred to here as the pump chamber. In the pump room, a separator is arranged, against the outside and inside of the tooth heads of the two gears and divides the pump room into a suction chamber and into a pressure chamber. The separator is often referred to as sickle or sickle due to its typical shape. Another name for the
Trennstück ist Füllstück. Durch Drehantrieb fördern die Zahnräder Fluid vom Saugraum in den Druckraum. Es sind auch Innenzahnradpumpen ohne Trennstück bekannt, die zur Unterscheidung als Zahnringpumpen bezeichnet werden können. Das Patent DE 196 13 833 B4 offenbart eine derartige Innenzahnradpumpe mit einem eigenen Gehäuse, mit dem sie beispielsweise an einen Elektromotor anflanschbar ist, der ihrem Antrieb dient. Diese Innenzahnradpumpe ist nicht für hydraulische Fahrzeugbremsanlagen vorgesehen. Separator is filler. By rotary drive, the gears convey fluid from the suction chamber into the pressure chamber. There are also internal gear pumps without separator known, which can be referred to differentiation as a gerotor pumps. The patent DE 196 13 833 B4 discloses such an internal gear pump with its own housing, with which it can be flanged, for example, to an electric motor, which serves its drive. This internal gear pump is not intended for hydraulic vehicle brake systems.
Die Offenlegungsschrift DE 10 2009 047 626 A1 offenbart eine Innenzahnradpumpe für eine hydraulische Fahrzeugbremsanlage, die kein eigenes Gehäuse aufweist, sondern die in einen Hydraulikblock einer Schlupfregelung einer hydraulischen Fahrzeugbremsanlage eingebaut ist. Der Hydraulikblock kann als Gehäuse der Innenzahnradpumpe aufgefasst werden. The published patent application DE 10 2009 047 626 A1 discloses an internal gear pump for a hydraulic vehicle brake system, which does not have its own housing, but which is installed in a hydraulic block of a slip control of a hydraulic vehicle brake system. The hydraulic block can be considered as the housing of the internal gear pump.
Solche Hydraulikblöcke sind bekannt, sie dienen der mechanischen Befestigung und hydraulischen Verschaltung von hydraulischen Bauelementen einer Schlupfregelung. Solche Bauelemente sind außer Innenzahnradpumpen Magnetventile und Hydrospeicher für die Schlupfregelung. Der Hydraulikblock ist üblicherweise ein quaderförmiges Teil aus Metall, insbesondere aus Aluminium, in dem zylindrische und oft durchmessergestufte Ansenkungen als Aufnahmen für die hydraulischen Bauelemente der Schlupfregelung und Bohrungen, die die Aufnahmen bzw. die in sie eingebauten Bauelemente hydraulisch verschalten, angebracht sind. Such hydraulic blocks are known, they serve the mechanical attachment and hydraulic interconnection of hydraulic components of a slip control. Such components are except internal gear pumps solenoid valves and hydraulic accumulator for the slip control. The hydraulic block is usually a cuboid part made of metal, in particular of aluminum, in the cylindrical and often diameter-graded countersinks as receptacles for the hydraulic components of the slip control and holes that hydraulically connect the recordings or built-in components, attached.
Offenbarung der Erfindung Disclosure of the invention
Die erfindungsgemäße Innenzahnradpumpe mit den Merkmalen des Anspruchs 1 ist als vormontierbare Baugruppe ausgebildet und weist eine Kartusche als Gehäuse auf, die in eine Aufnahme für die Innenzahnradpumpe insbesondere in einem Hydraulikblock einer Schlupfregelung einer hydraulischen Fahrzeugbremsanlage einsetzbar ist. Durch die Ausbildung als Baugruppe lässt sich die erfindungsgemäße Innenzahnradpumpe wie ein einheitliches Bauteil handhaben, was ihren Zusammenbau und insbesondere das Einsetzen in die Aufnahme vereinfacht. Ein weiterer Vorteil der Erfindung ist die Möglichkeit, die Innenzahnradpumpe nach ihrer Vormontage als Baugruppe und noch vor dem Einsetzen in die Aufnahme auf ihre Funktionstüchtigkeit und (Druck-) Dichtigkeit zu prüfen. In der Serienfertigung werden üblicherweise Einpress- und Verstemmprozesse angewandt, die keinen Aus- und Wiedereinbau erlauben. Im Fehlerfall ist die Innenzahnradpumpe Ausschuss. Ist eine Innenzahnradpumpe bereits in einem Hyd- raulikblock eingebaut, ist im Fehlerfall nicht nur die Innenzahnradpumpe, sondern auch der Hydraulikblock mit den eingebauten hydraulischen Bauelementen als Ganzes Ausschuss. Unter einer Kartusche ist das Gehäuse der Innenzahnradpumpe zu verstehen, das außen korrespondierend zur Aufnahme so ausgebildet ist, dass es passgenau in die Aufnahme einsetzbar ist. The internal gear pump according to the invention with the features of claim 1 is designed as a preassembled module and has a cartridge as a housing which is insertable into a receptacle for the internal gear pump, in particular in a hydraulic block slip control of a hydraulic vehicle brake system. Due to the design as an assembly, the internal gear pump according to the invention can be handled as a single component, which simplifies their assembly and in particular the insertion into the receptacle. Another advantage of the invention is the ability to check the internal gear pump after its pre-assembly as an assembly and even before insertion into the receptacle on their functionality and (pressure) tightness. In mass production, usually press-in and caulking processes are used which do not allow removal and replacement. In case of error, the internal gear pump is rejected. If an internal gear pump is already in a hydraulic Raulikblock installed, in case of failure, not only the internal gear pump, but also the hydraulic block with the built-hydraulic components as a whole Committee. Under a cartridge, the housing of the internal gear pump is to be understood, which is formed on the outside corresponding to the receptacle so that it is accurately inserted into the receptacle.
Die Unteransprüche haben vorteilhafte Ausgestaltungen und Weiterbildungen der im Anspruch 1 angegebenen Erfindung zum Gegenstand. The dependent claims have advantageous refinements and developments of the invention specified in claim 1 to the subject.
Eine bevorzugte Ausgestaltung der Erfindung findet sich in Anspruch 6, dessen Gegenstand eine Doppelinnenzahnradpumpe mit zwei Innenzahnradpumpen gemäß der Erfindung ist, von denen jede für einen Bremskreis einer hy- draulischen Zweikreis-Fahrzeugbremsanlage vorgesehen ist. Die beiden Innenzahnradpumpen sind getrennt voneinander in zwei Aufnahmen eines Umge- häuses angeordnet und weisen einen gemeinsamen Antrieb beispielsweise mittels eines Zahnrads auf. Das Gehäuse mit den beiden Aufnahmen für die beiden Innenzahnradpumpen wird zur Unterscheidung von den Gehäusen der als vor- montierbare Baugruppen ausgebildeten Innenzahnradpumpen als Umgehäuse bezeichnet. Insbesondere bildet ein Hydraulikblock das Gehäuse bzw. Umgehäuse für die beiden Innenzahnradpumpen. A preferred embodiment of the invention can be found in claim 6, the object of which is a double internal gear pump with two internal gear pumps according to the invention, each of which is provided for a brake circuit of a hydraulic two-circuit vehicle brake system. The two internal gear pumps are arranged separately from each other in two receptacles of a housing and have a common drive, for example by means of a gear. The housing with the two receptacles for the two internal gear pumps is referred to as a housing to distinguish it from the housings of designed as pre-assembled assemblies internal gear pump. In particular, a hydraulic block forms the housing or housing for the two internal gear pumps.
Die erfindungsgemäße Innenzahnradpumpe ist insbesondere als Hydropumpe für eine hydraulische, schlupfgeregelte- und/oder Fremd kraft-Fahrzeug- bremsanlage anstelle einer üblicherweise verwendeten Kolbenpumpe vorgesehen. In schlupfgeregelten Fahrzeugbremsanlagen werden Hydropumpen auch als Rückförderpumpen bezeichnet. Die bevorzugte Ausführungsform als erfindungsgemäße Doppelinnenzahnradpumpe ist wie gesagt für eine Zweikreis- Fahrzeugbremsanlage mit einer Zahnradpumpe für jeden Bremskreis vorgesehen. The internal gear pump according to the invention is provided in particular as a hydraulic pump for a hydraulic, slip-controlled and / or third-party vehicle brake system instead of a piston pump commonly used. In slip-controlled vehicle brake systems, hydraulic pumps are also referred to as return pumps. The preferred embodiment as a double internal gear pump according to the invention is as already said provided for a two-circuit vehicle brake system with a gear pump for each brake circuit.
Kurze Beschreibung der Zeichnung Die Erfindung wird nachfolgend anhand einer in der Zeichnung dargestelltenBRIEF DESCRIPTION OF THE DRAWING The invention will be described below with reference to a drawing
Ausführungsform näher erläutert. Es zeigen: Figur 1 eine erfindungsgemäße Innenzahnradpumpe in perspektivischer Darstellung; Figur 2 die Innenzahnradpumpe aus Figur 1 mit entgegengesetzter Blickrichtung; Embodiment explained in more detail. Show it: Figure 1 is an internal gear pump according to the invention in a perspective view; FIG. 2 shows the internal gear pump from FIG. 1 with opposite viewing direction;
Figur 3 einen Hydraulikblock mit zwei Aufnahmen für zwei Innenzahn- radpumpen aus Figuren 1 und 2 in perspektivischer Darstellung; und FIG. 3 is a perspective view of a hydraulic block with two receptacles for two internal gear pumps from FIGS. 1 and 2; and
Figur 4 den Hydraulikblock aus Figur 3 mit eingebauten Innenzahn- radpumpen gemäß der Erfindung. Ausführungsform der Erfindung Figure 4 shows the hydraulic block of Figure 3 with built-in Innenzahn- wheel pumps according to the invention. Embodiment of the invention
Figuren 1 und 2 zeigen eine erfindungsgemäße Innenzahnradpumpe 1 für eine hydraulische Fahrzeugbremsanlage. Die Innenzahnradpumpe weist ein zylindrisches, einseitiges offenes Gehäuse 2 auf, das als Kartusche zum Einsetzen in eine noch zu erläuternde Aufnahme ausgebildet ist. In einer Längsmitte weist die Kartusche 3 eine umlaufende Nut auf, in die ein Dichtring 4, im Ausführungsbeispiel ein O-Ring eingelegt ist. Figures 1 and 2 show an inventive internal gear pump 1 for a hydraulic vehicle brake system. The internal gear pump has a cylindrical, one-sided open housing 2, which is designed as a cartridge for insertion into a still to be explained recording. In a longitudinal center, the cartridge 3 has a circumferential groove into which a sealing ring 4, in the embodiment, an O-ring is inserted.
An einem in Figur 1 sichtbaren offenen Ende der Kartusche 3 sind ein koaxial in der Kartusche 3 angeordnetes und in ihr drehbar gelagertes Hohlrad 5 und ein exzentrisch im Hohlrad 5 angeordnetes Ritzel 6 der Innenzahnradpumpe 1 zu sehen, das mit dem Hohlrad 5 kämmt. Das Ritzel 6 ist ein außenverzahntes Zahnrad und das Hohlrad 5 ein innenverzahntes Zahnrad, die zur Unterscheidung als Ritzel 6 und als Hohlrad 5 bezeichnet werden. Außerhalb eines Umgangsabschnitts, in dem das Ritzel 6 mit dem Hohlrad 5 kämmt, ist im offenen Ende der Kartusche 3 ein Ende eines sichelförmigen, hier als Pumpenraum 7 bezeichneten Freiraums zwischen dem Ritzel 6 und dem Hohlrad 5 zu sehen. Das sichtbare Ende des Pumpenraums 7 ist ein Saugraum 8, in dem die Innenzahnradpumpe 1 Bremsflüssigkeit ansaugt. Ein im Pumpenraum 7 angeordnetes Trennstück, das den Pumpenraum 7 in den Saugraum 8 und einen nicht sichtbaren Druckraum am anderen Ende des Pumpenraums 7 teilt, ist in der Zeichnung nicht sichtbar. Durch Drehantrieb fördern das Ritzel 6 und das Hohlrad 5 in an sich bekannter Weise Bremsflüssigkeit vom Saugraum 8 zum Druckraum. At one visible in Figure 1 open end of the cartridge 3, a coaxially arranged in the cartridge 3 and rotatably mounted in their ring gear 5 and an eccentrically arranged in the ring gear 5 pinion 6 of the internal gear pump 1 can be seen, which meshes with the ring gear 5. The pinion 6 is an externally toothed gear and the ring gear 5 an internally toothed gear, which are referred to differentiation as pinion 6 and as a ring gear 5. Outside of a bypass section, in which the pinion 6 meshes with the ring gear 5, one end of a crescent-shaped, here as a pump chamber 7 designated clearance between the pinion 6 and the ring gear 5 can be seen in the open end of the cartridge 3. The visible end of the pump chamber 7 is a suction chamber 8, in which the internal gear pump 1 sucks brake fluid. An arranged in the pump chamber 7 separator which divides the pump chamber 7 in the suction chamber 8 and a non-visible pressure chamber at the other end of the pump chamber 7 is shown in the drawing not visible. By rotary drive promote the pinion 6 and the ring gear 5 in a conventional manner brake fluid from the suction chamber 8 to the pressure chamber.
Das Ritzel 6 ist drehfest auf einer Pumpenwelle 9, die abgedichtet durch das ge- schlossene Ende der das Gehäuse 2 der Innenzahnradpumpe 1 bildenden Kartusche 3 durchgeführt ist. Wie in Figur 2 zu sehen weist die Innenzahnradpumpe 1 ein Zahnrad als Antriebsrad 10 auf, das außen auf der geschlossenen Seite der Kartusche 3 angeordnet und dort drehfest auf der Pumpenwelle 9 angebracht ist. The pinion 6 is non-rotatably mounted on a pump shaft 9, which is sealed off by the closed end of the housing 2 of the internal gear pump 1 forming cartridge 3 is performed. As can be seen in FIG. 2, the internal gear pump 1 has a toothed wheel as the drive wheel 10, which is arranged on the outside of the closed side of the cartridge 3 and is mounted there on the pump shaft 9 in a torque-proof manner.
Auf beiden Seiten des Ritzels 6, des Hohlrads 5 und des in der Zeichnung nicht sichtbaren, im Pumpenraum 7 angeordneten Trennstücks sind Axialscheiben 1 1 angeordnet, die an dem Ritzel 6, dem Hohlrad 5 und dem Trennstück anliegen. Die Axialscheiben 1 1 sind axial beweglich und drehfest, sie decken den nicht sichtbaren Druckraum und das nicht sichtbare Trennstück ab und sind im Bereich des Saugraums 8 ausgespart. Solche Axialscheiben werden auch als Druckoder als Steuerscheiben oder -platten bezeichnet. In dem Ritzel 6, dem Hohlrad 5 und dem Trennstück abgewandten Außenseiten weisen die Axialscheiben 1 1 sog. Druckfelder 12 auf, die von einer Druckfelddichtung 13 umschlossen sind. Bei den Druckfeldern 12 handelt es sich um flache, in der gezeichneten Ausführungsform nierenförmige Vertiefungen, die sich ungefähr über den Druckraum und das Trennstück erstrecken. Eine Druckbeaufschlagung der Druckfelder 12 beaufschlagt die Axialscheiben 1 1 in dichtende Anlage an das Ritzel 6, das Hohlrad 5 und das Trennstück. Die Druckfelder 12 weisen ein Durchgangsloch 14 auf, durch das sie mit dem Druckraum der Innenzahnradpumpe 1 kommunizieren. Die in Figur 1 einem Betrachter zugewandte Axialscheibe 1 1 liegt frei, d.h. ihre dem Ritzel 6, dem Hohlrad 5 und dem Trennstück abgewandte Außenseite ist nicht abgedeckt, in der Ausführungsform befindet sie sich ungefähr bündig in einer Eben mit dem offene Ende der Kartusche 3, die das Gehäuse 2 der Innenzahnradpumpe 1 bildet. On both sides of the pinion 6, the ring gear 5 and not visible in the drawing, arranged in the pump chamber 7 separator Axialscheiben 1 1 are arranged, which bear against the pinion 6, the ring gear 5 and the separator. The axial discs 1 1 are axially movable and rotationally fixed, they cover the non-visible pressure chamber and the non-visible separator and are recessed in the region of the suction chamber 8. Such axial discs are also referred to as pressure or as control discs or plates. In the pinion 6, the ring gear 5 and the separator facing away outer sides, the axial discs 1 1 so-called. Pressure fields 12, which are enclosed by a pressure field seal 13. The pressure fields 12 are flat, in the illustrated embodiment kidney-shaped depressions which extend approximately over the pressure chamber and the separator. Pressurization of the pressure fields 12 acts on the axial discs 1 1 in sealing contact with the pinion 6, the ring gear 5 and the separator. The pressure fields 12 have a through hole 14, through which they communicate with the pressure chamber of the internal gear pump 1. The facing in Figure 1 a viewer axial disc 1 1 is exposed, i. its the pinion 6, the ring gear 5 and the separator facing away from the outside is not covered, in the embodiment, it is located approximately flush in a plane with the open end of the cartridge 3, which forms the housing 2 of the internal gear pump 1.
Die Innenzahnradpumpe 1 ist als Baugruppe in der Kartusche 3, die das Gehäuse 2 der Innenzahnradpumpe 1 bildet, vormontiert. Durch die Vormontage als Baugruppe lässt sich die Innenzahnradgruppe 1 wie ein einheitliches Bauteil handhaben und einbauen, außerdem ist eine Funktionsfähigkeits- und Dicht- heitsprüfung der als Baugruppe vormontierten Innenzahnradpumpe 1 vor ihrem Einbau möglich. The internal gear pump 1 is preassembled as an assembly in the cartridge 3, which forms the housing 2 of the internal gear pump 1. Pre-assembly as an assembly allows the internal gear group 1 to be handled and installed like a unified component, and it also has a functional and sealing capability. It is possible to check the integrity of the internal gear pump 1 pre-assembled before assembly.
Figur 3 zeigt einen Hydraulikblock 15 einer im übrigen nicht dargestellten Schlupfregelung einer hydraulischen Fahrzeugbremsanlage. Der HydraulikblockFIG. 3 shows a hydraulic block 15 of an otherwise not shown slip control of a hydraulic vehicle brake system. The hydraulic block
15 ist ein klotzförmiges Teil aus Aluminium, in dem Ansenkungen als Aufnahmen15 is a block-shaped part made of aluminum, in which countersinks as receptacles
16 für hydraulische Bauelemente der Schlupfregelung angebracht sind. Der Hydraulikblock 15 weist u.a. Aufnahmen 16 für zwei der in Figuren 1 und 2 dargestellten Innenzahnradpumpen 1 und für nicht dargestellte Magnetventile und Hydrospeicher auf. Zu sehen sind in Figur 1 noch zwei Ansenkungen als Anschlüsse 17 eines nicht dargestellten Zweikreis-Hauptbremszylinders. Die anderen Aufnahmen befinden sich an der in der Zeichnung unteren Seite des Hydraulikblocks 15 und sind deswegen nicht sichtbar. 16 are mounted for hydraulic components of the slip control. The hydraulic block 15 has u.a. Receivers 16 for two of the internal gear pumps 1 shown in Figures 1 and 2 and not shown for solenoid valves and hydraulic accumulator. To see in Figure 1 two more countersinks than terminals 17 of a dual-circuit master cylinder, not shown. The other recordings are located on the lower side in the drawing of the hydraulic block 15 and are therefore not visible.
Der Hydraulikblock 15 weist zwei Aufnahmen 16 für zwei Innenzahnradpumpen 1 auf, die als zu den Kartuschen 3 kongruente zylindrische Ansenkungen ausgeführt sind, in die die Innenzahnradpumpen 1 wie in Figur 4 zu sehen passgenau einsetzbar sind. Beim Einsetzen ist die offene Seite der Kartusche 3 mit der freiliegenden Axialscheibe 1 1 einem Grund der Aufnahmen 16 zugewandt, die Antriebsräder 10 befinden sich in offenen Seiten der Aufnahmen 16, so dass sie wie in Figur 4 zu sehen, zugänglich sind. Der Dichtring 4 in der Nut der Kartusche 3 dichtet die Innenzahnradpumpen 1 in den Aufnahmen 16 im Hydraulikblock 15 ab. Die freiliegende Axialscheibe 1 1 befindet sich am Grund der Aufnahme 16, die Druckfelddichtung 13 liegt dichtend am Grund der Aufnahme 16 an. Im Grund der Aufnahmen 16 für die Innenzahnradpumpen 1 münden eine Druck- Anschlussbohrung 18 und eine Saug-Anschlussbohrung 19. Die Druckanschlussbohrung 18 mündet in das Druckfeld 12 der freiliegenden Axialscheibe 1 1 in der offenen Seite der Kartusche 3, die das Gehäuse 2 der Innenzahnradpumpe 1 bildet. Durch das Durchgangsloch 14 in der Axialscheibe 1 1 und das Druckfeld 12 kommuniziert der Druckraum der Innenzahnradpumpen 1 mit der jeweiligen Druck-Anschlussbohrung 18, die gemeinsam mit dem Druckfeld 12 durch die Druckfelddichtung 13 abgedichtet ist. The hydraulic block 15 has two receptacles 16 for two internal gear pumps 1, which are designed as congruent to the cartridges 3 cylindrical countersinks, in which the internal gear pumps 1 as shown in Figure 4 can be accurately used. When inserting the open side of the cartridge 3 with the exposed axial disc 1 1 faces a bottom of the receptacles 16, the drive wheels 10 are in open sides of the receptacles 16 so that they can be seen as shown in Figure 4, accessible. The sealing ring 4 in the groove of the cartridge 3 seals the internal gear pumps 1 in the receptacles 16 in the hydraulic block 15. The exposed axial disc 1 1 is located at the bottom of the receptacle 16, the pressure field seal 13 is sealingly against the bottom of the receptacle 16. In the bottom of the receptacles 16 for the internal gear pump 1 open a pressure port hole 18 and a suction port hole 19. The pressure port hole 18 opens into the pressure field 12 of the exposed axial disc 1 1 in the open side of the cartridge 3, the housing 2 of the internal gear pump. 1 forms. Through the through hole 14 in the axial disc 1 1 and the pressure pad 12 communicates the pressure chamber of the internal gear pump 1 with the respective pressure port bore 18 which is sealed together with the pressure pad 12 through the pressure field seal 13.
Die Saug-Anschlussbohrung 19 mündet in dem Bereich, der von der Axial- scheibe 1 1 ausgespart ist, so dass die Saug-Anschlussbohrung 19 mit demThe suction connection bore 19 opens into the region which is recessed by the axial disk 1 1, so that the suction connection bore 19 with the
Saugraum 8 der Innenzahnradpumpe 1 kommuniziert. Ein Saug- und ein Druck- anschluss der Innenzahnradpumpen 1 wird auf diese Weise durch das Einsetzen der Innenzahnradpumpen 1 in die Aufnahmen 16 im Hydraulikblock 15 bewerkstelligt einschließlich der Abdichtung der Anschlüsse. Der Hydraulikblock 15 bildet ein Gehäuse der beiden Innenzahnradpumpen 1 und wird hier zur Unterscheidung von den Kartuschen 3, die ebenfalls ein Gehäuse 2 der Innenzahnradpumpen 1 bilden, als Umgehäuse bezeichnet. In dem das Umgehäuse bildenden Hydraulikblock 15 sind die beiden als Baugruppen vormontierten Innenzahnradpumpen 1 mit ihren ihre Gehäuse 2 bildenden Kartuschen 3 aufgenommen. Befestigt sind die Innenzahnradpumpen 1 in den Aufnahmen 16 beispielsweise durch Verstemmen. Suction chamber 8 of the internal gear pump 1 communicates. One suction and one pressure Connection of the internal gear pumps 1 is accomplished in this way by the insertion of the internal gear pumps 1 in the receptacles 16 in the hydraulic block 15 including the sealing of the terminals. The hydraulic block 15 forms a housing of the two internal gear pumps 1 and is referred to here as a housing for differentiation from the cartridges 3, which also form a housing 2 of the internal gear pumps 1. In which the surrounding housing forming hydraulic block 15, the two pre-assembled as assemblies internal gear pump 1 with its housing 2 forming cartridges 3 are added. The internal gear pumps 1 are fastened in the receptacles 16, for example by caulking.
Die beiden Innenzahnradpumpen 1 werden gemeinsam mit einem Elektromotor 20 angetrieben, an den ggf. ein Getriebe angeflanscht ist. Der Elektromotor 20 ist auf die Aufnahmen 16, in die die beiden Innenzahnradpumpen 1 eingesetzt sind, aufsetzbar und beispielsweise mit dem Hydraulikblock 15 verschraubbar. Der Elektromotor 20 weist ein hier als Treibrad 21 bezeichnetes Zahnrad auf, das sich zwischen den Antriebsrädern 10 der beiden Innenzahnradpumpen 1 befindet und mit beiden Antriebsrädern 10 kämmt, wenn der Elektromotor 20 am Hydraulikblock 15 befestigt ist. Zur Lagesicherung weist der Elektromotor 20 zwei Vorsprünge 22 beiderseits des Treibrads 21 auf, die kongruent zu Mündungen der Aufnahmen 16 für die Innenzahnradpumpen 1 sind und passgenau in die Aufnahmen 16 über den Antriebsrädern 10 eingreifen. Die Vorsprünge 22 sind an einer Flanschplatte 23 des Elektromotors 20 ausgebildet, die zur Befestigung des Elektromotors 20 am Hydraulikblock 15 dient. Alternativ kann die Lagesicherung durch einen nicht dargestellten koaxial um- oder hinter dem Treibrad 21 befindlichen Durchmesser hergestellt werden, der passgenau in die mittige Bohrung des Hydraulickblocks 15 eingreift. The two internal gear pumps 1 are driven together with an electric motor 20 to which, if necessary, a gear is flanged. The electric motor 20 is placed on the receptacles 16, in which the two internal gear pumps 1 are inserted, and for example screwed to the hydraulic block 15. The electric motor 20 has a gearwheel 21 here designated as the gear wheel, which is located between the drive wheels 10 of the two internal gear pumps 1 and with two drive wheels 10 meshes when the electric motor 20 is fixed to the hydraulic block 15. To secure the position of the electric motor 20 has two projections 22 on both sides of the drive wheel 21, which are congruent to the mouths of the receptacles 16 for the internal gear pumps 1 and precisely fit into the receptacles 16 via the drive wheels 10. The projections 22 are formed on a flange plate 23 of the electric motor 20, which serves to secure the electric motor 20 to the hydraulic block 15. Alternatively, the position assurance can be made by a not shown coaxially or behind the drive wheel 21 diameter, which engages accurately into the central bore of the hydraulic block 15.

Claims

Ansprüche claims
1 . Innenzahnradpumpe für eine hydraulische Fahrzeugbremsanlage, dadurch gekennzeichnet, dass die Innenzahnradpumpe (1 ) als vormontierbare Baugruppe ausgebildet ist und eine Kartusche (3) als Gehäuse (2) aufweist, die in eine Aufnahme (16) für die Innenzahnradpumpe (1 ) einsetzbar ist. 1 . Internal gear pump for a hydraulic vehicle brake system, characterized in that the internal gear pump (1) is designed as a preassembled module and a cartridge (3) as a housing (2) which in a receptacle (16) for the internal gear pump (1) can be used.
2. Innenzahnradpumpe nach Anspruch 1 , dadurch gekennzeichnet, dass die Innenzahnradpumpe (1 ) eine Axialscheibe (1 1 ) zur seitlichen Abdichtung eines Pumpenraums (7) der Innenzahnradpumpe (1 ) aufweist, deren Innenseite an Stirnflächen eines Ritzels (6) und eines Hohlrads (5) der Innenzahnradpumpe (1 ) anliegt und deren der Innenzahnradpumpe (1 ) abgewandte Außenseite an der Kartusche (3) frei liegt und ein Druckfeld (12) aufweist und dass ein Druckanschluss (18) der Innenzahnradpumpe (1 ) durch das Druckfeld (12) erfolgt. 2. internal gear pump according to claim 1, characterized in that the internal gear pump (1) has an axial disc (1 1) for lateral sealing of a pump chamber (7) of the internal gear pump (1) whose inside at end faces of a pinion (6) and a ring gear ( 5) of the internal gear pump (1) and the outside of the internal gear pump (1) facing away from the cartridge (3) is exposed and a pressure field (12) and that a pressure port (18) of the internal gear pump (1) through the pressure field (12) he follows.
3. Innenzahnradpumpe nach Anspruch 1 , dadurch gekennzeichnet, dass ein Saugraum (8) der Innenzahnradpumpe (1 ) auf einer Seite offen ist und mit einer Öffnung der Kartusche (3) kommuniziert. 3. internal gear pump according to claim 1, characterized in that a suction chamber (8) of the internal gear pump (1) is open on one side and communicates with an opening of the cartridge (3).
4. Innenzahnradpumpe nach Anspruch 1 , dadurch gekennzeichnet, dass sich die Aufnahme (16) für die Innenzahnradpumpe (1 ) in einem Umgehäuse (15) befindet. 4. internal gear pump according to claim 1, characterized in that the receptacle (16) for the internal gear pump (1) is in a surrounding housing (15).
5. Innenzahnradpumpe nach Anspruch 4, dadurch gekennzeichnet, dass das Umgehäuse (15) eine zweite Aufnahme (16) für eine zweite Innenzahnradpumpe (1 ) aufweist. 5. internal gear pump according to claim 4, characterized in that the surrounding housing (15) has a second receptacle (16) for a second internal gear pump (1).
6. Innenzahnradpumpe nach Anspruch 5, dadurch gekennzeichnet, dass die beiden Innenzahnradpumpen (1 ) einen gemeinsamen Antrieb (20, 21 ) aufweisen. 6. Internal gear pump according to claim 5, characterized in that the two internal gear pumps (1) have a common drive (20, 21).
EP13753160.4A 2012-10-19 2013-08-21 Internal gear pump Withdrawn EP2909479A1 (en)

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PCT/EP2013/067349 WO2014060136A1 (en) 2012-10-19 2013-08-21 Internal gear pump

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Publication number Priority date Publication date Assignee Title
EP3115608A4 (en) * 2014-03-06 2017-11-01 Nippon Oil Pump Co., Ltd. Pump device

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KR102093098B1 (en) 2020-03-25
WO2014060136A1 (en) 2014-04-24
JP2015535042A (en) 2015-12-07
KR20150071017A (en) 2015-06-25
US20160046271A1 (en) 2016-02-18
CN104736848A (en) 2015-06-24
DE102012219118A1 (en) 2014-04-24
US9616868B2 (en) 2017-04-11
CN104736848B (en) 2017-06-13
JP6271565B2 (en) 2018-01-31

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