EP2655881A1 - Pompe à piston possédant une chemise - Google Patents

Pompe à piston possédant une chemise

Info

Publication number
EP2655881A1
EP2655881A1 EP11773009.3A EP11773009A EP2655881A1 EP 2655881 A1 EP2655881 A1 EP 2655881A1 EP 11773009 A EP11773009 A EP 11773009A EP 2655881 A1 EP2655881 A1 EP 2655881A1
Authority
EP
European Patent Office
Prior art keywords
piston
piston pump
bushing
outlet valve
pump according
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Withdrawn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
EP11773009.3A
Other languages
German (de)
English (en)
Inventor
Oliver Gaertner
Heiko Jahn
Marc Zimmermann
Daniel Gosse
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 EP2655881A1 publication Critical patent/EP2655881A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • 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
    • F04B1/0421—Cylinders
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners
    • F04B53/168—Mounting of cylinder liners in cylinders
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly

Definitions

  • the invention relates to a piston pump for conveying fluids, with a reciprocating piston for driving reciprocating piston and a bushing, in which the piston is received axially displaceable, and arranged in the liner between an inlet valve and an outlet valve displacement chamber, wherein the Exhaust valve is arranged on a bush bottom.
  • Piston pumps are known in different configurations. They are used in motor vehicles with hydraulic vehicle brake systems.
  • the known piston pumps comprise an inlet valve, an outlet valve and a displacement, working or pressure chamber, which is arranged between the inlet valve and the outlet valve.
  • the displacement chamber is arranged in a pump cylinder, which forms a bushing and generally has a substantially pot-shaped shape.
  • a passage opening is formed, which is opened or closed by the outlet valve.
  • the outlet valve which is usually designed as a check valve, is arranged in an outlet valve cover, which is placed on the outside of the liner.
  • a discharge is further formed in a pressure line, in which the then under pressure fluid, in particular the brake fluid, is discharged.
  • the piston pump is used, for example, for returning brake fluid from a wheel brake cylinder or from several wheel brake cylinders into a master brake cylinder and / or for conveying brake fluid from a reservoir into a wheel brake cylinder or into a plurality of wheel brake cylinders.
  • the piston pump is required in vehicle brake systems with wheel slip control (ABS or ASR), traction control (TCS) and / or in a steering system (FDR) and / or in an electrohydraulic brake system (EHB) or an electronic stabilization program (ESP) ,
  • DE 10 2006 027 555 A1 discloses a piston pump for conveying fluids with a piston, a cylinder element and a pressure chamber arranged between an inlet valve and an outlet valve, wherein the outlet valve comprises a closing body, a pretensioning device and a disk element.
  • the outlet valve is arranged in a cover and an outflow into a pressure line takes place via this cover.
  • a sealing seat of the exhaust valve is disposed on the disk member.
  • a piston pump for conveying fluids having a piston drivable for reciprocating stroke motion, and a bushing in which the piston is axially slidably received, and a displacement space disposed in the bushing between an inlet valve and an outlet valve , wherein the outlet valve is arranged on a bush bottom.
  • an annular extension of the bushing is formed, which surrounds an installation space for the outlet valve.
  • the hydraulic piston pump comprises a cylindrical piston, which in one
  • Bushing which has a substantially cup-shaped shape, is mounted in and retracted in a cylinder bore.
  • the liner is used in particular in a cylinder bore of a pump housing of the piston pump in a hydraulic block.
  • a pressure area or pressure space filled with a fluid is provided between an inlet valve and an outlet valve.
  • Passage opening formed, which is opened or closed by the exhaust valve.
  • the outlet valve has a closing body, which is advantageously designed as a ball or as a plate.
  • the bush is preferred with an annular
  • Extension combined or this is formed after the bushing as a hollow cylindrical continuation of the liner, and then receive the outlet valve inside the hollow cylindrical continuation.
  • This has the advantage that components such as the closing body, the spring and means for noise damping from the exhaust valve side can be arranged in the interior of the hollow cylindrical continuation in the context of a simple assembly, which takes place in the opposite direction as usual.
  • the outlet valve which is preferably designed as a check valve, is arranged in the adjoining the bushing part of the extension and in the extension, a discharge is further formed in a pressure line of an associated pump housing.
  • the outflow is advantageously formed by means of a circumferential recess and a radial channel.
  • the circumferential recess is preferably formed on the bushing on the side facing away from the displacement space side and the radial channel preferably connects the
  • the outlet valve advantageously comprises the closing body, a biasing device for biasing the closing body and a base member for supporting the biasing means.
  • the liner of the piston pump can be designed to be longer dimensioned, which in addition further space in the region of the exhaust valve for any damping measures can be provided.
  • a closure element in the form of a closure cap is advantageously attached to the annular extension.
  • the closure element is advantageously caulked into the bushing and in turn caulked in the pump housing itself.
  • the closure element can also be placed on the extension of the bushing only and be caulked only in the pump housing to provide in this area a fluid-tight and force-absorbing position assurance for the closure element.
  • the closure element is integrated into the bushing and connected together in a unit that unwanted noise by the opening of the exhaust valve already be reduced thereby.
  • the integrated closure element which is preferably designed as an outlet valve cover or as an integrated closure cap of the outlet valve, is preferably made of aluminum. This ensures corrosion protection to the outside and a secure caulking in the pump housing.
  • the aluminum has such a ductility that the caulking of the closure element in the housing wall of the liner can be simple, positive and non-positive.
  • FIG. 1 shows a longitudinal section of a piston pump according to the invention with bushing and closure element in the associated pump housing and
  • FIG. 2 shows a perspective view of the bushing together with the closure element of the piston pump according to FIG. 1.
  • a piston pump 10 which comprises a stepped cylinder bore 12 in a hydraulic block which forms a pump housing 14.
  • the hydraulic Raulikblock of which in the drawing, only a piston pump 10 surrounding fragment is shown, is part of a slip-controlled, not shown, moreover, hydraulic vehicle brake system.
  • other hydraulic components such as solenoid valves or pressure accumulator are used and hydraulically with each other and with the invention
  • the piston pump 10 has a piston 16, whose one, a displacement chamber 18 facing away from the end with a first guide ring 20 in the pump housing 14 is guided and sealed with a sealing ring 22.
  • the other, the displacement chamber 18 facing the end of the piston 16 is guided with a second guide ring 24 in a bushing 26 of the piston pump 10 and sealed with a sealing ring 28.
  • the bushing 26 is inserted with a press fit into the cylinder bore 12 of the pump housing 14.
  • the interference fit provides a seal between the inlet and outlet sides, i. between low and high pressure side of the piston pump 10th
  • an axial blind bore 30 is mounted in the piston 16 from a side facing the displacement chamber 18, which is crossed near its bottom by transverse bores 32. Sack and cross bores 30, 32 communicate through windows 34 in a peripheral wall 36 of the bushing 26 with an inflow bore 38 which is mounted radially to the piston pump 10 in the pump housing 14 forming hydraulic block.
  • a check valve At the displacement chamber side end of the piston 16 is a check valve as
  • the inlet valve 40 has a valve ball 42 as a valve closing body, which cooperates with a conical valve seat 44 which is attached to an orifice of the blind bore 30 of the piston 16.
  • Valve ball 42 and valve closing spring 46 are accommodated in a valve housing 48, which is made as a cup-shaped deep-drawn part made of sheet metal with a diameter approximately corresponding to the diameter of the piston 16 and provided with flow openings 50.
  • the valve housing 48 has an annular step 52 with which it rests against an end face of the piston 16 facing the displacement chamber 18. It has an integrally formed, outwardly projecting radial flange 54, against which a helical compression spring presses as piston return spring 56 and in this way the valve body housing 48 on the piston 16 holds.
  • the radial flange 54 holds at the same time the guide ring 24 and the sealing ring 28 between itself and on a ring shoulder 58 of the piston 16 supporting the support ring 60 in the axial direction on the piston sixteenth
  • the piston return spring presses via the radial flange 54 of the valve housing 48, the piston 16 in the axial direction against an eccentric 62 driven by an electric motor, which serves to drive the piston 16 to a reciprocating stroke movement in a conventional manner.
  • the bushing 26 On a displacement chamber side, the bushing 26 has a sleeve bottom 64 integrally therewith, in which a through-hole 66 for the pump outlet is mounted.
  • the bushing 26 is extended over this bushing bottom 64 away on its side facing away from the displacement chamber 18 side with a hollow cylindrical portion or annular extension 67.
  • the annular extension 67 comprises in one piece with the bushing 26 an installation space 69 for an outlet valve 72, which can be mounted in this installation space 69 on the bushing 26 in the reverse order.
  • the annular extension 67 is adjoined by a closure element 68, which has the shape of a closure cap, is integrated into the annular extension 67 by means of a step 73 and is inserted directly into the cylinder bore 12.
  • the closure element 68 is connected by a caulking 70 positively to the pump housing 14 and sealed fluid-tight. As a result, the closure element 68 is additionally secured in the bush 26.
  • the closure element 68 is preferably made of aluminum. This ensures corrosion protection to the outside and due to the ductility of the aluminum a secure connection by caulking 70 of the closure member 68 in the pump housing 14th
  • the outlet valve 72 is designed with a spherical closing body 74 and a return spring 76 as a biasing device and a damping device 78 as a support and base element for the return spring 76.
  • the return spring 76 exerts a restoring force on the closing body 74, so that it is pressed in the direction of the center hole 66.
  • the bushing 26 is penetrated by a radial channel 79 which leads to an annular recess 80 formed on its outer side, in particular an annular channel, for the outflow of the fluid from the pump housing 14 through a discharge channel 82 when the outlet valve 72 is open.
  • the bushing 26 is thus formed extended in its longitudinal extent to provide an additional space in conjunction with the integrated closure element 68. Due to the integrated arrangement of the annular extension 67 in the form of a sleeve extension and the caulking of the closure element 68 directly in the bush 26 but the total length of the piston pump 10 is not necessarily extended.
  • the inventive design of the piston pump 10 with the bushing 26, the annular extension 67 and the integrated closure element 68 allows the closing body 74, the return spring 76 and the damping device 78 can be mounted in a simple manner from the exhaust valve side.
  • the bushing 26 itself is machined during production.
  • the processing according to the invention for producing the bushing 26 with the hollow cylindrical section or annular extension 67 can therefore be carried out cost-neutral.
  • the inventive design additional space for installation of the damping device 78 is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention porte sur une pompe à piston (10) destinée à transporter des fluides, qui comprend un piston (16) qui peut être entraîné en un mouvement de course alternative, et une chemise (26) dans laquelle le piston (16) est logé mobile en translation axiale, et une chambre de compression (18) située dans la chemise (26) entre une soupape d'admission (40) et une soupape d'échappement (72), la soupape d'échappement (72) étant disposée au niveau d'un fond (64) de la chemise et, sur le côté du fond de la chemise (64) qui est éloigné de la chambre de compression (18), est formé un prolongement annulaire qui entoure une chambre de montage (69) pour la soupape d'échappement (72).
EP11773009.3A 2010-12-23 2011-10-24 Pompe à piston possédant une chemise Withdrawn EP2655881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010064084A DE102010064084A1 (de) 2010-12-23 2010-12-23 Kolbenpumpe mit einer Laufbuchse
PCT/EP2011/068543 WO2012084300A1 (fr) 2010-12-23 2011-10-24 Pompe à piston possédant une chemise

Publications (1)

Publication Number Publication Date
EP2655881A1 true EP2655881A1 (fr) 2013-10-30

Family

ID=44936254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11773009.3A Withdrawn EP2655881A1 (fr) 2010-12-23 2011-10-24 Pompe à piston possédant une chemise

Country Status (6)

Country Link
US (1) US20140030128A1 (fr)
EP (1) EP2655881A1 (fr)
JP (1) JP2014503741A (fr)
CN (1) CN103270299A (fr)
DE (1) DE102010064084A1 (fr)
WO (1) WO2012084300A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013224828A1 (de) 2013-12-04 2015-06-11 Robert Bosch Gmbh Kolbenpumpe für eine hydraulische Fahrzeugbremsanlage
DE102017216900A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Druckmittelsteuerventil, insbesondere zur Steuerung einer Durchströmungsrichtung in einem Druckmittelkreis und Kolbenpumpe, insbesondere zur Förderung eines Druckmittels in einer elektronisch schlupfregelbaren Fahrzeugbremsanlage
DE102021204716A1 (de) 2021-05-10 2022-11-10 Thyssenkrupp Ag Radialkolbenpumpe, insbesondere Radialkolbenverdichter
DE102021204713A1 (de) 2021-05-10 2022-11-10 Thyssenkrupp Ag Radialkolbenpumpe, sowie Verfahren zur Herstellung einer Radialkolbenpumpe

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4442737B4 (de) * 1994-12-01 2007-06-14 Robert Bosch Gmbh Kolbenpumpe
JPH1182291A (ja) * 1997-08-29 1999-03-26 Unisia Jecs Corp ポンプ装置
DE19800500A1 (de) * 1998-01-09 1999-07-15 Bosch Gmbh Robert Kolbenpumpe
FR2784719B1 (fr) * 1998-10-15 2002-09-06 Bosch Gmbh Robert Pompe a piston
DE19928164A1 (de) * 1999-06-19 2000-12-21 Continental Teves Ag & Co Ohg Kolbenpumpe
JP4650629B2 (ja) * 2004-11-16 2011-03-16 株式会社アドヴィックス ラジアルプランジャポンプ
DE102006027555A1 (de) 2006-06-14 2007-12-20 Robert Bosch Gmbh Kolbenpumpe mit reduziertem Geräusch
JP5034705B2 (ja) * 2007-06-18 2012-09-26 株式会社アドヴィックス ピストンポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012084300A1 *

Also Published As

Publication number Publication date
US20140030128A1 (en) 2014-01-30
DE102010064084A1 (de) 2012-06-28
CN103270299A (zh) 2013-08-28
JP2014503741A (ja) 2014-02-13
WO2012084300A1 (fr) 2012-06-28

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