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DE19756727A1 - Piston pump - Google Patents

Piston pump

Info

Publication number
DE19756727A1
DE19756727A1 DE19756727A DE19756727A DE19756727A1 DE 19756727 A1 DE19756727 A1 DE 19756727A1 DE 19756727 A DE19756727 A DE 19756727A DE 19756727 A DE19756727 A DE 19756727A DE 19756727 A1 DE19756727 A1 DE 19756727A1
Authority
DE
Germany
Prior art keywords
piston
piston pump
housing
pump according
storage element
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Withdrawn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
DE19756727A
Other languages
German (de)
Inventor
Guenther Vogel
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.)
Continental Teves AG and Co OHG
Original Assignee
ITT Manufacturing Enterprises LLC
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 ITT Manufacturing Enterprises LLC filed Critical ITT Manufacturing Enterprises LLC
Priority to DE19756727A priority Critical patent/DE19756727A1/en
Publication of DE19756727A1 publication Critical patent/DE19756727A1/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Withdrawn legal-status Critical Current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
    • 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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4068—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
    • 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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0408—Pistons
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F04B11/0016—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The pump has a piston (1) movable axially in a housing and with a storage element (2) which acts as a volume store or as a vacuum store depending on the operating position. The storage element separates two chambers (4,5) from each other with an elastic, gas-tight membrane (3).

Description

Die Erfindung betrifft eine Kolbenpumpe mit einem axial in einem Gehäuse beweglich angeordneten Kolben.The invention relates to a piston pump with an axial in a housing movably arranged piston.

Kolbenpumpen, deren Kolben axial, senkrecht zu ihrer Antriebs­ achse in einem Gehäuse bewegt werden, sind in der Technik als Radialkolbenpumpen hinreichend bekannt. In diesen Pumpen wird ein rotatorischer Antrieb mittels Excenter in eine lineare Kolbenbewegung transformiert. Als Antrieb dient hier meist ein Elektromotor. Um einen kontinuierlichen Volumenstrom und Druckaufbau während des Pumpens zu er zeugen, werden im Hydraulik­ system der Pumpe Volumenspeicher und Saugspeicher angeord­ net. Diese Speicher dienen dazu, schon während des Pumpenan­ laufs Druckmittelvolumen bereitzustellen. Dadurch ist gewähr­ leistet, daß die Pumpe nicht trockenläuft. Um diese Speicher­ varianten im Hydrauliksystem der Pumpe anordnen zu können, sind Gehäuse für die Speicher im Pumpengehäuse anzuordnen. ,Hierzu ist ein entsprechender Raum im Pumpengehäuse erforder­ lich und das Pumpengehäuse ist einem zusätzlichen Zer­ spanungsprozeß zur Herstellung der Speichergehäuse zu unter­ ziehen. Durch den zusätzlichen Platzbedarf steigt das Volumen und damit das Gewicht der Pumpengehäuse an. Die zusätzliche Zerspanung verursacht entsprechend zusätzliche Kosten.Piston pumps, whose pistons are axial, perpendicular to their drive Axes are moved in a housing, are known in technology as Radial piston pumps are well known. In these pumps a rotary drive by means of an eccentric into a linear one Piston movement transformed. Usually serves as a drive Electric motor. To a continuous flow and To build up pressure during pumping, he is in hydraulics system of the pump volume storage and suction storage arranged net. These memories are used during pumping to provide pressure medium volume. This guarantees ensures that the pump does not run dry. To this memory to be able to arrange variants in the hydraulic system of the pump, housings for the accumulators must be arranged in the pump housing. , A corresponding space in the pump housing is required for this Lich and the pump housing is an additional Zer Machining process for the production of the storage case too pull. The volume increases due to the additional space requirement and thus the weight of the pump housing. The additional Machining causes additional costs accordingly.

Aus den genannten Nachteilen der Anordnung der Speicher im Pumpengehäuse ergibt sich für die Erfindung die Aufgabe, eine kostengünstige und platzsparende Anordnung der Speicher in einer Radialkolbenpumpe bereitzustellen.From the disadvantages of the arrangement of the storage in Pump housing for the invention, the task arises  Inexpensive and space-saving arrangement of the storage in to provide a radial piston pump.

Diese Aufgabe wird gelöst durch die im Anspruchs 1 beschriebe­ ne Kolbenpumpe.This object is achieved by the description in claim 1 ne piston pump.

Am antriebsseitigen Ende des Kolbens wird hierzu der dort vor­ handene Raum zur Integration eines Speichers genutzt. In dem dort vorhandenen Raum wird ein Gehäuse integriert, daß den Speicher aufnimmt. Die sich im Kolben befindende Axialbohrung wird über die radialen Anschlußbohrungen hinaus bis zum Spei­ chergehäuse verlängert. Durch diese Maßnahme ist der Speicher mit dem Hydrauliksystem der Axialkolbenpumpe verbunden. Je nach Kolbenstellung wirkt der Speicher als Volumenspeicher oder Saugspeicher. Die verwendeten Speicher sind mit einer gasdichten elastischen Membrane ausgestattet, die zwei Kammern voneinander trennt. Die eine Kammer ist mit dem Hydrauliksy­ stem der Pumpe verbunden und wird dadurch von Druckmittel durchströmt. Die zweite Kammer ist zum Kolbengehäuse hin of­ fen, so daß sie mit der Atmosphäre verbunden ist.For this purpose, the front end of the piston is there available space to integrate a memory. By doing there a space is integrated that the Memory. The axial bore in the piston is beyond the radial connection holes to the Spei extended. This measure is the memory connected to the hydraulic system of the axial piston pump. Each After the piston has been set, the accumulator acts as a volume accumulator or suction accumulator. The memories used are with a gas-tight elastic membrane equipped, the two chambers separates from each other. One chamber is with the hydraulic system stem connected to the pump and is thereby from pressure medium flows through. The second chamber is open towards the piston housing fen so that it is connected to the atmosphere.

Weitere Vorteile sind den Ausführungsvarianten, welche in zwei Figuren in einer Zeichnung dargestellt sind, zu entnehmen.Other advantages are the design variants, which come in two Figures are shown in a drawing.

Fig. 1 Querschnitt durch einen Kolben, welcher ausgestattet ist mit einem topfförmigen Speicher und Fig. 1 cross section through a piston which is equipped with a cup-shaped memory and

Fig. 2 Querschnitt eines Kolbens, welcher ausgestattet ist mit einem Flachmembranspeicher. Fig. 2 cross section of a piston, which is equipped with a flat membrane accumulator.

Fig. 1 stellt einen Kolben (1) dar, in dessen Inneren eine axiale Verbindungsbohrung (13) zwischen Druck- und Saugseite angebracht ist. Die Saugseite wird durch radial angeordneten Bohrungen (14) mit dem Hydrauliksystem der Pumpe verbunden. Über diese radialen Anschlußbohrungen (14) hinaus ist die axiale Verbindungsbohrung (13) bis zum antriebsseitigen Ende des Kolbens (7) verlängert. Am antriebsseitigen Ende des Kol­ bens (7) erweitert eine Stufenbohrung die Verbindungsbohrung (13) zu einem Gehäuse 6, in dem ein Speicherelemente 2 ange­ ordnet ist. Das Speicherelement 2 ist aus einer elastischen gasdichten Membran 3, die auf einen Stützkörper 10 aufgezogen ist, aufgebaut. Die Membrane 3 teilt den Speicher in eine druckmitteldurchströmte Kammer 4 und eine mit der Atmosphäre verbundene Kammer 5 auf. Das Speicherelement wird im Gehäuse 6 positioniert und mittels eines Deckels 8, verschlossen. Fig. 1 represents a piston ( 1 ), in the interior of which an axial connecting bore ( 13 ) is provided between the pressure and suction side. The suction side is connected to the hydraulic system of the pump through radially arranged bores ( 14 ). Beyond these radial connection bores ( 14 ), the axial connecting bore ( 13 ) is extended to the end of the piston ( 7 ) on the drive side. At the drive end of the piston ( 7 ), a stepped bore extends the connecting bore ( 13 ) to a housing 6 , in which a storage element 2 is arranged. The storage element 2 is constructed from an elastic, gas-tight membrane 3 , which is fitted onto a support body 10 . The membrane 3 divides the reservoir into a chamber 4 through which pressure medium flows and a chamber 5 connected to the atmosphere. The storage element is positioned in the housing 6 and closed by means of a cover 8 .

Fig. 2 zeigt eine zweite Ausführungsform des in den Kolben integrierten Speicherelements 2. Der Kolben 1 ist gleich dem Kolben 1 aus in Fig. 1 aufgebaut. Das Speicherelement 2 ist ebenfalls im Gehäuse 6 angeordnet. Das Speicherelement 2 ist aus einer Flachmembrane 3, welche auf einen Stützkörper 10 aufgezogen ist, aufgebaut. Der Stützkörper 10 preßt die Mem­ bran 3 in die Stufe des Gehäuses 6 und trennt dadurch die Kammern 4, 5 gasdicht voneinander ab. Der Stützkörper 10 ist mit einer Nut 15 ausgestattet, in die Material 16 des Kolbens verstemmt wird, um den Stützkörper 10 formschlüssig mit dem Kolben 1 zu verbinden. FIG. 2 shows a second embodiment of the storage element 2 integrated in the piston. The piston 1 is constructed in the same way as the piston 1 from FIG. 1. The storage element 2 is also arranged in the housing 6 . The storage element 2 is constructed from a flat membrane 3 , which is mounted on a support body 10 . The support body 10 presses the membrane 3 in the stage of the housing 6 and thereby separates the chambers 4 , 5 from each other in a gas-tight manner. The support body 10 is equipped with a groove 15 into which material 16 of the piston is caulked in order to connect the support body 10 to the piston 1 in a form-fitting manner.

Claims (7)

1. Kolbenpumpe, mit einem axial in einem Gehäuse beweglich angeordneten Kolben (1), dadurch gekennzeichnet, daß der Kolben (1) ein Speicherelement (2) aufweist, das in Abhän­ gigkeit seiner Betriebsstellung ein Volumenspeicher oder ein Unterdruckspeicher ist.1. Piston pump, with an axially movably arranged in a housing piston ( 1 ), characterized in that the piston ( 1 ) has a storage element ( 2 ) which is a volume accumulator or a vacuum accumulator depending on its operating position. 2. Kolbenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß das Speicherelement (2) mittels einer elastischen gasdich­ ten Membrane (3) zwei Kammern (4, 5) voneinander trennt.2. Piston pump according to claim 1, characterized in that the storage element ( 2 ) by means of an elastic gas-tight membrane ( 3 ) separates two chambers ( 4 , 5 ) from each other. 3. Kolbenpumpe nach Anspruch 2, dadurch gekennzeichnet, daß eine Kammer (4) mit Druckmittel durchströmt wird und die andere Kammer (5) mit der Atmosphäre in Verbindung steht.3. Piston pump according to claim 2, characterized in that a chamber ( 4 ) is flowed through by pressure medium and the other chamber ( 5 ) is in communication with the atmosphere. 4. Kolbenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß das Speicherelement in einem Gehäuse (6) am antriebsseiti­ gen Ende (7) des Kolbens angeordnet ist.4. Piston pump according to claim 1, characterized in that the storage element is arranged in a housing ( 6 ) at the drive end end ( 7 ) of the piston. 5. Kolbenpumpe nach Anspruch 4, dadurch gekennzeichnet, daß das Gehäuse (6) mit einem verstemmten Deckel (8) verschlos­ sen ist.5. Piston pump according to claim 4, characterized in that the housing ( 6 ) is closed with a caulked cover ( 8 ). 6. Kolbenpumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Membrane (3) topfförmig ausgebildet und über einen Stützkörper (10) angeordnet ist.6. Piston pump according to claim 2, characterized in that the membrane ( 3 ) is cup-shaped and is arranged via a support body ( 10 ). 7. Kolbenpumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Membrane (11) eben ausgeführt ist und an ihrem äußeren Umfang einen von ihrer Grundfläche aus entspringenden Wulst (12) aufweist.7. Piston pump according to claim 2, characterized in that the membrane ( 11 ) is flat and has on its outer circumference a bulge ( 12 ) originating from its base.
DE19756727A 1997-11-07 1997-12-19 Piston pump Withdrawn DE19756727A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19756727A DE19756727A1 (en) 1997-11-07 1997-12-19 Piston pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19749284 1997-11-07
DE19756727A DE19756727A1 (en) 1997-11-07 1997-12-19 Piston pump

Publications (1)

Publication Number Publication Date
DE19756727A1 true DE19756727A1 (en) 1999-05-12

Family

ID=7847957

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19756727A Withdrawn DE19756727A1 (en) 1997-11-07 1997-12-19 Piston pump

Country Status (1)

Country Link
DE (1) DE19756727A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027425A1 (en) * 2000-06-02 2001-12-06 Zf Batavia Llc Radial piston pump, e.g. lubricant pump in internal combustion engine, has connecting bore to eccentric drive element chamber in base of piston controlled by excess pressure valve
WO2004072477A1 (en) * 2003-02-11 2004-08-26 Ganser-Hydromag Ag High pressure pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1882851U (en) * 1960-06-18 1963-11-14 Linde Eismasch Ag PISTON FOR A PISTON PUMP.
DE2412719A1 (en) * 1974-03-16 1975-09-25 Langen & Co Open-top piston for hydraulic pump - contains cushioning plunger throttling flow to low pressure oil when piston near top dead centre
DE2548702A1 (en) * 1975-10-30 1977-05-05 Linde Ag Piston for hydrostatic or axial machines - has noise absorbing elastic element or pressure pad behind piston head
DE3003590A1 (en) * 1980-02-01 1981-08-06 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen HIGH PRESSURE PUMP FOR CONVEYING AN OIL / WATER EMULSION
DE3914954A1 (en) * 1988-07-07 1990-01-11 Teves Gmbh Alfred PISTON PUMP
DE4201825A1 (en) * 1992-01-24 1993-07-29 Teves Gmbh Alfred Valve for vehicle antilock braking circuit - has throttle in front of inlet and uses slider subject to pump pressure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1882851U (en) * 1960-06-18 1963-11-14 Linde Eismasch Ag PISTON FOR A PISTON PUMP.
DE2412719A1 (en) * 1974-03-16 1975-09-25 Langen & Co Open-top piston for hydraulic pump - contains cushioning plunger throttling flow to low pressure oil when piston near top dead centre
DE2548702A1 (en) * 1975-10-30 1977-05-05 Linde Ag Piston for hydrostatic or axial machines - has noise absorbing elastic element or pressure pad behind piston head
DE3003590A1 (en) * 1980-02-01 1981-08-06 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen HIGH PRESSURE PUMP FOR CONVEYING AN OIL / WATER EMULSION
DE3914954A1 (en) * 1988-07-07 1990-01-11 Teves Gmbh Alfred PISTON PUMP
DE4201825A1 (en) * 1992-01-24 1993-07-29 Teves Gmbh Alfred Valve for vehicle antilock braking circuit - has throttle in front of inlet and uses slider subject to pump pressure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027425A1 (en) * 2000-06-02 2001-12-06 Zf Batavia Llc Radial piston pump, e.g. lubricant pump in internal combustion engine, has connecting bore to eccentric drive element chamber in base of piston controlled by excess pressure valve
US6582203B2 (en) 2000-06-02 2003-06-24 Zf Batavia, L.L.C. Radial piston pump
WO2004072477A1 (en) * 2003-02-11 2004-08-26 Ganser-Hydromag Ag High pressure pump
US7108491B2 (en) 2003-02-11 2006-09-19 Ganser-Hydromag Ag High pressure pump
CN100392241C (en) * 2003-02-11 2008-06-04 甘瑟-许德罗玛格股份公司 High-pressure pump

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: CONTINENTAL TEVES AG & CO. OHG, 60488 FRANKFURT, D

8110 Request for examination paragraph 44
8130 Withdrawal