US20080240945A1 - Motor/Pump Unit - Google Patents
Motor/Pump Unit Download PDFInfo
- Publication number
- US20080240945A1 US20080240945A1 US11/628,922 US62892205A US2008240945A1 US 20080240945 A1 US20080240945 A1 US 20080240945A1 US 62892205 A US62892205 A US 62892205A US 2008240945 A1 US2008240945 A1 US 2008240945A1
- Authority
- US
- United States
- Prior art keywords
- pump
- housing
- motor
- flange
- shaft
- 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.)
- Abandoned
Links
Images
Classifications
-
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
-
- 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
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
- F04C2240/51—Bearings for cantilever assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/90—Alloys not otherwise provided for
- F05C2201/903—Aluminium alloy, e.g. AlCuMgPb F34,37
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/02—Rubber
Definitions
- the invention relates to a motor/pump unit, in particular for a servo-steering system.
- Such motor/pump units are used in motor vehicle technology for the provision of auxiliary forces. In addition to assisting the steering force, such a unit can also be used in an active chassis regulation. Generally, a need exists to design the motor/pump units so as to be more compact.
- a motor/pump unit comprising a pump housing and an intermediate housing, a pump with a first pump shaft being held in the pump housing, is known.
- the motor/pump unit includes an electric motor and a single-shaft pump. The motor shaft and the pump shaft are coupled in a central bearing in the intermediate housing.
- German Utility Model DE 299 16 108 U1 a motor/pump unit is shown with a single shaft penetrating the motor housing and the pump housing. On the shaft both the pump rotor and also the runner of the motor are arranged.
- a motor/pump unit comprises a pump housing and an intermediate housing.
- a pump having a first pump shaft is held in the pump housing.
- the pump housing and the intermediate housing are connected with each other via a flange.
- the first pump shaft is supported in the flange.
- the support of the pump shaft in the flange in contrast to a support in the intermediate housing, allows for a very short construction of the pump shaft. Thereby, smaller deviations occur in the truth of rotation, for which reason only relatively simple compensation measures are necessary.
- Such a compensation is achieved in particular in that the first pump shaft is supported in a bush which is formed in a housing cover closing the pump housing.
- the pump comprises a second pump shaft which is arranged next to the first pump shaft and is likewise supported in the flange.
- the pump shafts can each be constructed in one piece with a toothed wheel.
- the flange is preferably a punched-out plate of an aluminum alloy.
- the flange is at least partially provided with a NBR (nitrile rubber) coating.
- the flange size is adapted to the structural conditions of the motor/pump unit and any possible additional functions of the flange (e.g. cooling).
- a separate motor housing which would have to be fastened accurately in position on the intermediate housing can be dispensed with, in that an electric motor of the motor/pump unit is held in a section of the intermediate housing.
- FIGURE shows a sectional side view of a motor/pump unit according to the invention.
- the motor/pump unit 10 shown in the FIGURE comprises a housing cover 12 , a pump housing 14 , an intermediate housing 16 and a housing 18 for a motor, only the motor shaft 28 of which is shown.
- the stator, rotor, bearing and further details of the motor are not essential for the invention and have been omitted for reasons of clarity.
- the pump housing 14 is closed on one end side with the housing cover 12 and connected on the other side with the intermediate housing 16 via a flange 20 .
- One or more centering pins 22 projecting from the pump housing through the flange 20 into the intermediate housing 16 provide for a correct positioning of these three components.
- an inlet and an outlet are formed for the fluid which is conveyed in a closed circuit.
- the motor shaft 28 is coupled to a first shaft 30 (drive shaft) of a pump held in the pump housing 14 .
- a first toothed wheel 32 is arranged, which meshes with a second toothed wheel 36 arranged on a second pump shaft 34 .
- the toothed wheels 32 , 36 can also be constructed in one piece with the pump shafts 30 and respectively 34 .
- the two pump shafts 30 , 34 are each supported on one side in a bush 38 formed in the housing cover 12 and on the other side in the flange 20 .
- the flange 20 is formed as a punched plate, just as the bushes 38 in the housing cover 12 , from an aluminium alloy. To improve the sealing effect and for noise damping, the flange 20 can be coated at corresponding sites with NBR (nitrile rubber).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
A motor/pump unit, in particular for a servo-steering system, includes a pump housing and an intermediate housing. A pump having a first pump shaft is held in the pump housing. The pump housing and the intermediate housing are connected with each other via a flange, and the first pump shaft is mounted in the flange.
Description
- This application is a national stage of International Application No. PCT/EP2005/006112 filed Jun. 7, 2005, the disclosures of which are incorporated herein by reference, and which claimed priority to German Patent Application No. 20 2004 009 057.0 filed Jun. 8, 2004, the disclosures of which are incorporated herein by reference.
- The invention relates to a motor/pump unit, in particular for a servo-steering system.
- Such motor/pump units are used in motor vehicle technology for the provision of auxiliary forces. In addition to assisting the steering force, such a unit can also be used in an active chassis regulation. Generally, a need exists to design the motor/pump units so as to be more compact.
- From German Patent Application DE 196 35 411 A1, and corresponding U.S. patent application No. 5,953,391, both of which are incorporated by reference herein, a motor/pump unit comprising a pump housing and an intermediate housing, a pump with a first pump shaft being held in the pump housing, is known. The motor/pump unit includes an electric motor and a single-shaft pump. The motor shaft and the pump shaft are coupled in a central bearing in the intermediate housing.
- In German Utility Model DE 299 16 108 U1 a motor/pump unit is shown with a single shaft penetrating the motor housing and the pump housing. On the shaft both the pump rotor and also the runner of the motor are arranged.
- It is an object of the invention to provide a compact motor/pump unit which is optimized as regards function but is nevertheless favourably priced.
- According to the invention, a motor/pump unit comprises a pump housing and an intermediate housing. A pump having a first pump shaft is held in the pump housing. The pump housing and the intermediate housing are connected with each other via a flange. The first pump shaft is supported in the flange. The support of the pump shaft in the flange, in contrast to a support in the intermediate housing, allows for a very short construction of the pump shaft. Thereby, smaller deviations occur in the truth of rotation, for which reason only relatively simple compensation measures are necessary.
- Such a compensation is achieved in particular in that the first pump shaft is supported in a bush which is formed in a housing cover closing the pump housing.
- According to the preferred embodiment of the invention, the pump comprises a second pump shaft which is arranged next to the first pump shaft and is likewise supported in the flange. The pump shafts can each be constructed in one piece with a toothed wheel.
- The flange is preferably a punched-out plate of an aluminum alloy. To improve the sealing function and the noise damping, the flange is at least partially provided with a NBR (nitrile rubber) coating. The flange size is adapted to the structural conditions of the motor/pump unit and any possible additional functions of the flange (e.g. cooling).
- To simplify and improve the centering of the pump housing with respect to the intermediate housing, which hitherto takes place indirectly by means of centering pins provided between the pump housing and the flange and between the flange and the centering housing, it is proposed that at least one centering pin is provided which projects from the pump housing through the flange into the intermediate housing.
- A separate motor housing, which would have to be fastened accurately in position on the intermediate housing can be dispensed with, in that an electric motor of the motor/pump unit is held in a section of the intermediate housing.
- Other advantages of this invention will become apparent to those skilled in the art from the following detailed description of the preferred embodiments, which read in light of the accompanying drawings.
- In the drawing, the single FIGURE shows a sectional side view of a motor/pump unit according to the invention.
- The motor/
pump unit 10 shown in the FIGURE comprises ahousing cover 12, apump housing 14, anintermediate housing 16 and ahousing 18 for a motor, only themotor shaft 28 of which is shown. The stator, rotor, bearing and further details of the motor are not essential for the invention and have been omitted for reasons of clarity. - The
pump housing 14 is closed on one end side with thehousing cover 12 and connected on the other side with theintermediate housing 16 via aflange 20. One or more centeringpins 22, projecting from the pump housing through theflange 20 into theintermediate housing 16 provide for a correct positioning of these three components. In theintermediate housing 16, an inlet and an outlet (not shown) are formed for the fluid which is conveyed in a closed circuit. - The
motor shaft 28 is coupled to a first shaft 30 (drive shaft) of a pump held in thepump housing 14. On the drive shaft 30 a firsttoothed wheel 32 is arranged, which meshes with a secondtoothed wheel 36 arranged on asecond pump shaft 34. Thetoothed wheels pump shafts 30 and respectively 34. The twopump shafts bush 38 formed in thehousing cover 12 and on the other side in theflange 20. - The
flange 20 is formed as a punched plate, just as thebushes 38 in thehousing cover 12, from an aluminium alloy. To improve the sealing effect and for noise damping, theflange 20 can be coated at corresponding sites with NBR (nitrile rubber). - In accordance with the provisions of the patent statutes, the principle and mode of operation of this invention have been explained and illustrated in its preferred embodiment. However, it must be understood that this invention may be practiced otherwise than as specifically explained and illustrated without departing from its spirit or scope.
Claims (8)
1. A motor/pump unit, in particular for a servo-steering system, the motor pump unit comprising a pump housing and an intermediate housing, a pump having a first pump shaft being held in the pump housing, the pump housing and the intermediate housing being connected with each other via a flange, the first pump shaft being supported in the flange.
2. The device according to claim 1 , wherein the first pump shaft is also supported in a bush which is formed in a housing cover closing the pump housing.
3. The device according to claim 1 wherein the pump comprises a second pump shaft which is arranged next to the first pump shaft and is likewise supported in the flange.
4. The device according to claim 3 , wherein the pump shafts are each constructed in one piece with a toothed wheel.
5. The device according to claim 1 , wherein the flange is a punched plate of an aluminium alloy.
6. The device according to claim 1 , wherein the flange is provided at least partially with a NBR (nitrile rubber) coating.
7. The device according to claim 1 , wherein at least one centering pin is provided, which projects from the pump housing through the flange into the intermediate housing.
8. The device according to claim 1 , wherein an electric motor of the motor/pump unit is held in a section of the intermediate housing.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004009057U DE202004009057U1 (en) | 2004-06-08 | 2004-06-08 | Motor / pump unit |
DE20-2004-009-057.0 | 2004-06-08 | ||
PCT/EP2005/006112 WO2005121557A1 (en) | 2004-06-08 | 2005-06-07 | Motor/pump unit |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080240945A1 true US20080240945A1 (en) | 2008-10-02 |
Family
ID=33305389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/628,922 Abandoned US20080240945A1 (en) | 2004-06-08 | 2005-06-07 | Motor/Pump Unit |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080240945A1 (en) |
EP (1) | EP1756427A1 (en) |
JP (1) | JP2007523293A (en) |
DE (1) | DE202004009057U1 (en) |
WO (1) | WO2005121557A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100226096A1 (en) * | 2009-03-04 | 2010-09-09 | Dieter Best | Clamping Part for Pressing Power Components Against a Cooling Surface |
KR20170038225A (en) * | 2015-09-30 | 2017-04-07 | 삼성전자주식회사 | Dehumidifier |
US11662011B2 (en) | 2017-06-16 | 2023-05-30 | Gkn Sinter Metals Ag | Pump assembly and method for producing a pump assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170013230A (en) * | 2014-05-30 | 2017-02-06 | 파커-한니핀 코포레이션 | Integrated displacement controlled pump |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4242066A (en) * | 1978-08-24 | 1980-12-30 | Commercial Shearing, Inc. | Rotary pumps and motors and thrust plates therefor |
US5953913A (en) * | 1996-08-31 | 1999-09-21 | Mannesmann Vdo Ag | System for an electro-hydraulic pressure supply for a power-assist device in a motor vehicle |
US6158983A (en) * | 1997-04-24 | 2000-12-12 | Trw Inc. | Pump having muffler for attenuating noise |
US6428285B2 (en) * | 1998-06-24 | 2002-08-06 | Luk Fahrzeung-Hydraulik Gmbh & Co. Kg | Hydraulic delivery device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1293599B (en) * | 1958-01-14 | 1969-04-24 | Borg Warner | Gear pump |
US4797219A (en) * | 1987-04-24 | 1989-01-10 | Exxon Chemical Patents Inc. | Novel dispersants for oleaginous compositions |
DE19524965A1 (en) * | 1995-07-08 | 1997-01-09 | Bosch Gmbh Robert | Gear machine (pump or motor) |
KR100391007B1 (en) * | 1996-12-03 | 2003-07-12 | 댄포스 아/에스 | Motor Pump Unit |
DE19726134A1 (en) * | 1997-06-20 | 1998-12-24 | Bosch Gmbh Robert | Hydraulic power pack |
DE29916108U1 (en) * | 1999-09-15 | 2001-01-25 | Asf Thomas Ind Gmbh | pump |
DE10334003A1 (en) * | 2002-07-25 | 2004-02-05 | Luk Automobiltechnik Gmbh & Co. Kg | Fuel- or oil gear pump used in vehicles, has gear wheels with plastic surfaces having same coefficient of thermal expansion as metal casing |
-
2004
- 2004-06-08 DE DE202004009057U patent/DE202004009057U1/en not_active Expired - Lifetime
-
2005
- 2005-06-07 JP JP2007500193A patent/JP2007523293A/en active Pending
- 2005-06-07 US US11/628,922 patent/US20080240945A1/en not_active Abandoned
- 2005-06-07 WO PCT/EP2005/006112 patent/WO2005121557A1/en active Application Filing
- 2005-06-07 EP EP05747801A patent/EP1756427A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4242066A (en) * | 1978-08-24 | 1980-12-30 | Commercial Shearing, Inc. | Rotary pumps and motors and thrust plates therefor |
US5953913A (en) * | 1996-08-31 | 1999-09-21 | Mannesmann Vdo Ag | System for an electro-hydraulic pressure supply for a power-assist device in a motor vehicle |
US6158983A (en) * | 1997-04-24 | 2000-12-12 | Trw Inc. | Pump having muffler for attenuating noise |
US6428285B2 (en) * | 1998-06-24 | 2002-08-06 | Luk Fahrzeung-Hydraulik Gmbh & Co. Kg | Hydraulic delivery device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100226096A1 (en) * | 2009-03-04 | 2010-09-09 | Dieter Best | Clamping Part for Pressing Power Components Against a Cooling Surface |
US8164903B2 (en) * | 2009-03-04 | 2012-04-24 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Clamping part for pressing power components against a cooling surface |
KR20170038225A (en) * | 2015-09-30 | 2017-04-07 | 삼성전자주식회사 | Dehumidifier |
CN108136323A (en) * | 2015-09-30 | 2018-06-08 | 三星电子株式会社 | Dehumidifier |
US11077399B2 (en) * | 2015-09-30 | 2021-08-03 | Samsung Electronics Co., Ltd. | Dehumidifier |
KR102435202B1 (en) * | 2015-09-30 | 2022-08-24 | 삼성전자주식회사 | Dehumidifier |
US11662011B2 (en) | 2017-06-16 | 2023-05-30 | Gkn Sinter Metals Ag | Pump assembly and method for producing a pump assembly |
Also Published As
Publication number | Publication date |
---|---|
WO2005121557A1 (en) | 2005-12-22 |
JP2007523293A (en) | 2007-08-16 |
DE202004009057U1 (en) | 2004-10-14 |
EP1756427A1 (en) | 2007-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: TRW AUTOMOTIVE GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JORDAN, MARTIN;REEL/FRAME:020329/0697 Effective date: 20070312 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |