DE102010040701A1 - Pump with a pump cylinder - Google Patents

Pump with a pump cylinder

Info

Publication number
DE102010040701A1
DE102010040701A1 DE201010040701 DE102010040701A DE102010040701A1 DE 102010040701 A1 DE102010040701 A1 DE 102010040701A1 DE 201010040701 DE201010040701 DE 201010040701 DE 102010040701 A DE102010040701 A DE 102010040701A DE 102010040701 A1 DE102010040701 A1 DE 102010040701A1
Authority
DE
Germany
Prior art keywords
pump
characterized
cylinder
opening
pump cylinder
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.)
Pending
Application number
DE201010040701
Other languages
German (de)
Inventor
Oliver Gaertner
Andreas Schubitschew
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
Priority to DE201010040701 priority Critical patent/DE102010040701A1/en
Publication of DE102010040701A1 publication Critical patent/DE102010040701A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00Pumping installations or systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/40Arrangements 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
    • B60T8/4031Pump units characterised by their construction or mounting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404Details or component parts
    • F04B1/0421Cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122Cylinder block
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162Adaptations of cylinders
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49229Prime mover or fluid pump making
    • Y10T29/49236Fluid pump or compressor making

Abstract

In a pump (10), in particular for a vehicle brake system, with a pump piston (16) which is displaceably guided in a pump cylinder (32), according to the invention the pump cylinder (32) is produced by deep drawing.

Description

  • State of the art
  • The invention relates to a pump, in particular a piston pump for a vehicle brake system, with a pump piston which is guided displaceably in a pump cylinder. Furthermore, the invention relates to a vehicle brake system with such a pump and a method for producing such a pump.
  • Such a pump is for example off DE 199 28 913 A1 known. It comprises a pump housing in which, as a single pump element or pump unit, a pump piston is displaceably mounted in a pump cylinder. The pump piston sucks a brake fluid through an inlet opening into the pump cylinder and conveys it out through a drain opening out of the pump cylinder.
  • It is an object of the present invention to provide a pump which is inexpensive to manufacture and assemble.
  • Disclosure of the invention
  • According to the invention, a pump is provided, in particular for a vehicle brake system, which is designed with a pump piston, which is displaceably guided in a pump cylinder. The pump cylinder is specially manufactured by deep drawing.
  • Deep drawing is a fundamentally very cost-effective production method, because with it a high degree of deformation can be formed with a single deep-drawing or pressing process on a workpiece with simultaneously high dimensional accuracy. Nevertheless, it requires deep drawing that usually only very thin-walled workpieces can be processed and manufactured. These workpieces then have correspondingly a comparatively low resistance or rigidity against pressure loading and in particular against buckling, which makes them appear to be unsuitable for use as a pump cylinder actually.
  • The invention is based on the finding that for a pump, nevertheless, a deep-drawn pump cylinder can be used. The actual problem of low resistance or stiffness can namely be compensated and completely compensated by a further embodiment of the environment of such a deep-drawn pump cylinder.
  • In order to achieve the necessary rigidity, it is particularly advantageous if the pump cylinder is accommodated in a pump housing in such a way that it is supported with its outer surface area flat on the pump housing. The support is created particularly advantageous by a fit with only a small clearance between the outside of the pump cylinder and the inside of the receiving opening associated with the pump housing. The fit clearance should be chosen such that the pump cylinder can still be inserted with a reasonable pressing force into the pump housing, while still essentially comes to rest over the entire surface of the pump housing.
  • Particularly preferably, the pump cylinder is designed cup-shaped with an annular wall and a bottom surface.
  • Advantageously, components of the associated pump unit, such as the pump piston, can be preassembled with its associated inlet valve in such pump cylinders. The pre-assembly can be made inexpensively in a workpiece carrier, in which initially the pump piston and subsequently the pump piston are used. The mounting direction remains the same, which is advantageous for a werkstückträgerbasierte mounting.
  • Further preferably, a valve opening is formed on the bottom surface with a valve body which selectively closes these.
  • The thus arranged valve opening can be made particularly favorable in combination with the deep-drawing process, because the surrounding material area of the bottom surface during deep drawing itself need not or only slightly deformed. The bottom surface itself is usually only slightly deformed during deep drawing, while the material of the annular wall undergoes a significant deformation during deep drawing. The only slightly deformed material area ensures that the valve opening maintains its dimensions over the life of the associated valve.
  • In a preferred development of the pump according to the invention at least one inlet opening to the pump piston is further formed on the annular wall.
  • Such inlet opening can be made in the thin-walled material of the pump piston by a cost punching process.
  • Particularly preferably, a plurality of inlet openings is formed on the annular wall, by means of which a filter screen is formed.
  • By means of such a design of many inlet openings on the pump cylinder, a filter can be produced very inexpensively, because the plurality of openings can be realized in the rule with only one punching operation. Furthermore, it requires no additional component for the filter, so that the procurement and installation costs can be further reduced.
  • The aforementioned at least one opening is, as already mentioned, particularly preferably produced by means of stamping, since this production method can be carried out very inexpensively. The punching takes place in particular before the pump cylinder has been produced by deep drawing. The punching can then be carried out on the raw material of the pump cylinder, which is present as a simple sheet essentially in planar form. Alternatively or additionally, the opening can be produced by means of laser cutting or etching. Especially the multiplicity of inlet openings can be formed very cost-effective and at the same time dimensionally accurate. The deformation of the material region during deep drawing, in which the inlet openings are located, can be taken into account in advance by means of a corresponding dimensional and dimensional adaptation of the openings to be punched.
  • Preferably, an annular disc is further formed at the end of the annular wall, which is opposite to the bottom surface.
  • The annular disc can be produced largely free of cost with the deep-drawing process itself. It is advantageously used to support a sealing ring, which is arranged next to it and serves to seal the axially moving pump piston relative to its surroundings. The sealing ring is a low-pressure seal, which prevents fluid from escaping from the suction of the pump piston.
  • Furthermore, an annular step is preferably formed at the end of the annular wall, which is opposite to the bottom surface, in which in particular a sealing between the pump piston and pump cylinder sealing ring is arranged.
  • The ring step forms a mounting space for a sealing ring, which is advantageously stored at the same time during the assembly steps and protected in this position against damage. The sealing ring in particular produces a seal between pump piston and pump cylinder. In such a solution can be further dispensed with a further seal between the pump piston and the pump housing surrounding him outside the pump housing by the pump cylinder is sealed to the pump housing. This seal can advantageously be created by means of the press-fit situation of the pump cylinder into the pump housing or by means of caulking of the pump housing on the open front side of the pump cylinder.
  • The invention further comprises a vehicle brake system with such a pump.
  • Finally, the invention also includes a method for producing a pump comprising the steps of: forming at least one opening in a metal sheet, deep drawing the sheet to a pump cylinder, such that with the opening a valve opening and / or an inlet opening and / or a drain opening of the pump cylinder is formed and mounting a pump piston in such pump cylinder. Following this production steps, as explained above, the mounting of the pump cylinder in a pump housing preferably follows.
  • An exemplary embodiment of the solution according to the invention will be explained in more detail below with reference to the attached schematic drawings. It shows:
  • 1 a longitudinal section of a pump according to the prior art,
  • 2 a longitudinal section of a first embodiment of a pump with a pump cylinder according to the invention,
  • 3 a longitudinal view of the pump according to 2 .
  • 4 a perspective view of the pump cylinder according to 2 and 3 , such as
  • 5 a longitudinal section of a second embodiment of a pump with a pump cylinder according to the invention.
  • In 1 is a pump 10 illustrated in the form of a piston pump for a hydraulic vehicle brake system, not shown, which serves to generate a fluid pressure of brake fluid within the vehicle brake system. The pump 10 has for this purpose a cup-shaped pump cylinder produced as a turned part 12 in which, against a coil spring 14 a pump piston 16 is slidably mounted. The pump piston 16 promotes the brake fluid through a in the bottom region of the pump cylinder 12 trained, circular valve opening 17 an exhaust valve 18 in a subsequent outflow 20 , The outlet valve 18 has a spring-biased closing body 22 on. To brake fluid in the pump cylinder 12 suck in, is at its periphery as a separate component a ring filter 24 arranged on the in Flow direction on the pump piston 16 arranged inlet valve 26 follows. The pump piston 16 is at its low pressure side by means of a sealing ring 28 against a pump housing 30 sealed off.
  • In the 2 to 5 are pumps according to the invention 10 shown in which an associated pump cylinder 32 specially made by deep drawing. The deep-drawing process has been carried out starting from a sheet as a blank, in particular a cup-shaped basic shape with an annular wall 34 and a floor area 36 has been designed. The ring wall 34 Although this is comparatively thin and thus prone to buckling due to a high pressure load, but this is the pump cylinder 32 comprehensive pump housing 30 formed such that the annular wall 34 radially outward against the pump housing 30 can support (see 2 and 5 ), so that the pump cylinder 32 can also absorb high internal pressures.
  • On the thin-walled material of the blank are previously in the area of the bottom surface 36 a valve opening 38 for the exhaust valve 18 as well as in the area of the ring wall 34 many comparatively small inlet openings 40 punched out.
  • With such many inlet openings 40 is at the then finished deep-drawn pump cylinder 32 In a very cost effective manner, a filter screen has been produced which can filter the inflowing brake fluid for its inflow.
  • At the end of the ring wall 34 that of the floor area 36 is opposite, is also an annular disk during deep drawing 42 been trained. The ring disk 42 supports the adjacent sealing ring 28 in the axial direction.
  • In the embodiment according to 5 is at this end of the ring wall 34 a ring step 44 formed, with which the sealing ring 28 is also covered in the radial direction and protected in this way.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 19928913 A1 [0002]

Claims (11)

  1. Pump ( 10 ), in particular for a vehicle brake system, with a pump piston ( 16 ) mounted in a pump cylinder ( 32 ) is guided displaceably, characterized in that the pump cylinder ( 32 ) is made by deep drawing.
  2. Pump according to claim 1, characterized in that the pump cylinder ( 32 ) in a pump housing ( 30 ) is received in such a way that it with its outer circumferential surface on the pump housing ( 30 ) is supported.
  3. Pump according to claim 1 or 2, characterized in that the pump cylinder ( 32 ) cup-shaped with an annular wall ( 34 ) and a floor surface ( 36 ) is designed.
  4. Pump according to claim 3, characterized in that on the bottom surface ( 36 ) a valve opening ( 38 ) with one of these optionally closing valve body ( 22 ) is trained.
  5. Pump according to claim 3 or 4, characterized in that on the annular wall ( 34 ) at least one inlet opening ( 40 ) to the pump piston ( 16 ) is formed out.
  6. Pump according to one of claims 3 to 5, characterized in that on the annular wall ( 34 ) a plurality of inlet openings ( 40 ) is formed, by means of which a filter is formed.
  7. Pump according to one of claims 4 to 6, characterized in that at least one of the openings ( 38 ; 40 ) is produced by means of punching, in particular before the pump cylinder ( 32 ) has been produced by deep drawing.
  8. Pump according to one of claims 3 to 7, characterized in that at the end of the annular wall ( 34 ), the floor area ( 36 ), an annular disc ( 42 ) is trained.
  9. Pump according to one of claims 3 to 8, characterized in that at the end of the annular wall ( 34 ), the floor area ( 36 ), an annular step ( 44 ) is formed, in particular a between pump piston ( 16 ) and pump cylinders ( 32 ) sealing sealing ring is arranged.
  10. Vehicle brake system with a pump ( 10 ) according to one of claims 1 to 9.
  11. Method for producing a pump ( 10 ) comprising the steps: - forming at least one opening ( 38 ; 40 ) in a sheet metal, - deep drawing the sheet to a pump cylinder ( 32 ), such that with the opening ( 38 ; 40 ) a valve opening ( 38 ) and / or an inlet opening ( 40 ) and / or a drain opening of the pump cylinder ( 32 ), and - mounting a pump piston ( 16 ) in the pump cylinders ( 32 ).
DE201010040701 2010-09-14 2010-09-14 Pump with a pump cylinder Pending DE102010040701A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201010040701 DE102010040701A1 (en) 2010-09-14 2010-09-14 Pump with a pump cylinder

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE201010040701 DE102010040701A1 (en) 2010-09-14 2010-09-14 Pump with a pump cylinder
PCT/EP2011/062223 WO2012034737A1 (en) 2010-09-14 2011-07-18 Pump having a pump cylinder
EP11738683.9A EP2616680A1 (en) 2010-09-14 2011-07-18 Pump having a pump cylinder
US13/823,016 US20130243629A1 (en) 2010-09-14 2011-07-18 Pump having a pump cylinder

Publications (1)

Publication Number Publication Date
DE102010040701A1 true DE102010040701A1 (en) 2012-03-15

Family

ID=44629484

Family Applications (1)

Application Number Title Priority Date Filing Date
DE201010040701 Pending DE102010040701A1 (en) 2010-09-14 2010-09-14 Pump with a pump cylinder

Country Status (4)

Country Link
US (1) US20130243629A1 (en)
EP (1) EP2616680A1 (en)
DE (1) DE102010040701A1 (en)
WO (1) WO2012034737A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014090458A1 (en) * 2012-12-14 2014-06-19 Robert Bosch Gmbh Piston for a piston pump of a vehicle braking system
CN106438326A (en) * 2016-07-14 2017-02-22 河海大学 Micro intermittent pump for lubricating hydrodynamic fan cooling tower bearing and mounting and working method of micro intermittent pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19928913A1 (en) 1999-06-24 2001-01-04 Bosch Gmbh Robert Piston pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492547A (en) * 1945-05-03 1949-12-27 Donald E Willard Air compressor
US4370918A (en) * 1980-03-24 1983-02-01 Pringle William L Fluid cylinder assembly
DE3323407C2 (en) * 1983-06-29 1986-12-11 Boge Gmbh, 5208 Eitorf, De
DE19527401A1 (en) * 1995-07-27 1997-01-30 Teves Gmbh Alfred Piston pump
DE19721227A1 (en) * 1997-05-21 1998-11-26 Bosch Gmbh Robert Piston pump
WO1999006696A1 (en) * 1997-07-30 1999-02-11 Robert Bosch Gmbh Piston pump
DE102008026218B4 (en) * 2008-05-30 2012-04-19 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Adjustable coolant pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19928913A1 (en) 1999-06-24 2001-01-04 Bosch Gmbh Robert Piston pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014090458A1 (en) * 2012-12-14 2014-06-19 Robert Bosch Gmbh Piston for a piston pump of a vehicle braking system
CN104854345A (en) * 2012-12-14 2015-08-19 罗伯特·博世有限公司 Piston for piston pump of vehicle braking system
CN106438326A (en) * 2016-07-14 2017-02-22 河海大学 Micro intermittent pump for lubricating hydrodynamic fan cooling tower bearing and mounting and working method of micro intermittent pump

Also Published As

Publication number Publication date
EP2616680A1 (en) 2013-07-24
WO2012034737A1 (en) 2012-03-22
US20130243629A1 (en) 2013-09-19

Similar Documents

Publication Publication Date Title
US9664266B2 (en) Cam follower roller device
CN103867522B (en) Fluid pressure cylinder
DE102004063075B4 (en) High-pressure fuel pump for an internal combustion engine with a stepped piston and a quantity control valve
KR100552255B1 (en) Non-return valve, especially for a piston pump
DE102004039825B4 (en) Hydraulically damping bearing
JP5821769B2 (en) Damper device
EP2219913B1 (en) Valve cartridge for a solenoid valve, and associated solenoid valve
US20100229812A1 (en) Tappet
US7478998B2 (en) Conveyor device
EP2677124A1 (en) Roller lifter for internal combustion engine
KR101510495B1 (en) Rocker arm unit and method of assembling rocker arm unit
CN102619661B (en) High pressure pump
CN102449349B (en) For the cam follower roller device of fuel-injection pump
US10421443B2 (en) Solenoid valve, in particular for slip-regulated motor-vehicle brake systems
JP4040111B2 (en) Piston pump
DE19820902A1 (en) Piston pump for a vehicle hydraulic brake system
EP1774177B1 (en) Piston pump with improved efficiency
KR20140035441A (en) Solenoid valve, in particular for slip-controlled motor vehicle braking systems
US20110110807A1 (en) High-pressure pump
DE10013858A1 (en) Piston pump with valve assembly unit has one end of spring on valve seat carrier and other attached to piston
JP4131572B2 (en) Radial piston pump for high-pressure fuel supply
US8800519B2 (en) Roller tappet
JP4822770B2 (en) Method of manufacturing motor having motor and double yoke
JP5220725B2 (en) Piston for hydraulic motor having radial piston and method for manufacturing the piston
DE102004047601A1 (en) Fluid pump e.g. high-pressure fluid pump, for internal combustion engine, has extension in flow path leading from inlet to chamber and multifunction unit arranged in extension and including retaining section for retaining filter device

Legal Events

Date Code Title Description
R012 Request for examination validly filed