US20090004035A1 - Motor/Pump Assembly With Improved Sealing - Google Patents

Motor/Pump Assembly With Improved Sealing Download PDF

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Publication number
US20090004035A1
US20090004035A1 US12/094,568 US9456806A US2009004035A1 US 20090004035 A1 US20090004035 A1 US 20090004035A1 US 9456806 A US9456806 A US 9456806A US 2009004035 A1 US2009004035 A1 US 2009004035A1
Authority
US
United States
Prior art keywords
motor
seal
housing
pump
pump housing
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
Application number
US12/094,568
Other languages
English (en)
Inventor
Horst Steegmuller
Matthias Tupy
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.)
Brose Fahrzeugteile SE and Co KG
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Assigned to CONTINENTAL AUTOMOTIVE GMBH reassignment CONTINENTAL AUTOMOTIVE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STEEGMUELLER, HORST, TUPY, MATTHIAS
Publication of US20090004035A1 publication Critical patent/US20090004035A1/en
Assigned to BROSE FAHRZEUGTEILE GMBH & CO. KOMMANDITGESELLSCHAFT, WUERZBURG reassignment BROSE FAHRZEUGTEILE GMBH & CO. KOMMANDITGESELLSCHAFT, WUERZBURG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CONTINENTAL AUTOMOTIVE GMBH
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • 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
    • F04B1/0448—Sealing means, e.g. for shafts or housings
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/075—Means for converting reciprocating motion into rotary motion or vice versa using crankshafts or eccentrics
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • the invention relates to a motor/pump unit.
  • a motor/pump unit that is in particular a motor vehicle anti-locking braking device.
  • Said known unit contains a motor housing, a pump housing, and an electronics housing.
  • the motor housing is located with one of its end faces in front of one of the pump housing's end faces.
  • the electronics housing is located with one of its end faces in front of the pump housing's other end face.
  • Connecting leads are ducted through the end faces situated one in front of the other and through the pump housing as electric power supply or control leads between in each case the interior of the motor housing on the one hand and that of the electronics housing on the other.
  • the end faces situated one in front of the other are sealed one from the other, particularly radially outward, by means of circumferential seals situated between them.
  • Said seals are generally produced by silicone rubber overmolding.
  • a further motor/pump unit is known from DE-C1-101 62 247.
  • Said known unit is also a motor vehicle braking device.
  • Said device contains a motor housing, a pump housing, and an electronics housing located axially one behind the other in a sandwich arrangement.
  • At least two mutually electrically insulated plug-type power supply or control leads are ducted from the motor housing to the electronics housing.
  • the plug-type power supply or control leads are fastened on the motor housing side in a base, in particular a brush plate, are embodied axially rigidly, and are free to move transversely to their longitudinal direction at least in terms of tolerance compensation.
  • the plug-type power supply or control leads can with axial support with respect to the motor housing be plug-contacted with an electronics unit in the electronics housing.
  • the brush plate can be supported by at least one supporting rib, located on the outer edge, on the motor housing's outer circumferential surface counter to the power supply and control leads' plug-in direction by means of a press fit taking all tolerance
  • EP-A1-1 341 290 is a further motor/pump unit that is in particular a motor vehicle braking device.
  • Said known unit has an electric motor and a pump located axially behind it and driven thereby.
  • a drive link having a universal joint.
  • the connection is made via a coupling part having a form-fitting plug-in receptacle for a rotor shaft end of the electric motor on the driven side and for a pump shaft end of the pump on the drive side.
  • the plug-in receptacle is embodied axially conically.
  • the rotor shaft end and pump shaft end are mutually axially pretensioned to insure rotational compliance that is free from play.
  • a motor/pump unit may comprise a motor having a pot-shaped motor housing and a brush plate provided in the motor housing, and a pump having a pump housing, wherein the motor is secured axially to an end face of the pump housing, the brush plate forms the terminating face of the motor with respect to the pump housing, the edge region of the pot-shaped motor housing facing the pump housing has a seal-accommodating stage, the region of the brush plate radially adjacent to the edge region of the motor housing likewise has a seal-accommodating stage, and inserted into said seal-accommodating stages is a seal which is axially compressed through securing of the pump housing on the motor.
  • the seal-accommodating stage of the brush plate can be slanted so that the seal-accommodating stage has sides that enclose an angle less than 90°.
  • the seal-accommodating stage of the motor housing may have a slant on which is provided a monitoring area at which the presence of the seal is detected.
  • FIG. 1 is a partial sectional representation of a motor/pump unit according to an embodiment
  • FIG. 2 is an enlarged representation of detail X shown in FIG. 1 with the seal not yet in the compressed condition
  • FIG. 3 is another enlarged representation in which sealing is shown in the compressed condition.
  • both the sealing function will be improved and the seal's service life extended because the seal's tensioned or compressed condition acts in one direction only.
  • No silicone rubber overmolding is needed for insuring the sealing function. That function can be brought about simply and economically by inserting a seal into the motor housing's and brush plate's mutually adjacent seal-accommodating stages during assembly of the motor/pump unit, which seal will then be automatically compressed in the axial direction when the pump housing is secured to the motor.
  • Sealing surfaces reliably preventing an ingress of brake fluid from the pump side will thereby be created where the seal makes contact with the brush plate's seal-accommodating stage. Sealing surfaces sealing the motor housing's interior from the surroundings will furthermore be created where the seal makes contact with the motor housing's seal-accommodating stage. A robust sealing effect will consequently be achieved with just one sealing component.
  • a further advantage is that securing of the brush plate in the motor/pump unit will also be improved by the seal's axial compression.
  • a further advantage is increased overall system resistance to aging effects, for example in the case of storage at different temperatures. Undesired aging effects of the plastic end shield are particularly avoided. Coarser tolerances at the plastic end shield will also be possible as well as a reduction in the individual components' complexity. That will reduce costs.
  • FIG. 1 is a partial sectional representation of a motor/pump unit according to an embodiment.
  • An electric motor M and a pump P belong to said motor/pump unit. It can be used, for example, in a motor vehicle as an anti-locking braking device.
  • the motor M has a pot-shaped motor housing 1 .
  • a rotor shaft 3 is supported therein in bearings 4 and 5 .
  • Rotor laminations 8 are permanently connected to said shaft so that they turn with the rotor shaft during operation.
  • Secured to the motor housing's interior sides are magnetic shells 7 serving when the motor is operating to energize the rotor winding belonging to the rotor laminations 8 .
  • the rotor winding is connected to a commutator 9 that is likewise secured to the rotor shaft 3 and connected to brushes secured in a brush plate 11 .
  • the brush plate 11 forms the terminating face of the motor M with respect to the pump housing 2 .
  • the motor M is axially secured to an end face of the pump housing 2 , for example through a screw connection.
  • the rotor shaft 3 of the motor M is ducted through the bearing 9 into the pump housing 2 and secured there in a bearing 6 on the pump side.
  • seal 12 Provided between the motor housing 1 and pump housing 2 is a seal 12 , preferably a circumferential sealing washer. Said seal both seals the motor housing 1 from the surroundings and seals the motor housing 1 against an ingress of brake fluid discharging undesirably from the pump housing 2 .
  • FIG. 2 is an enlarged representation of detail X, shown in FIG. 1 , in which the seal 12 and associated accommodating elements are contained in the motor housing 1 and brush plate 11 .
  • the pot-shaped motor housing 1 has a seal-accommodating stage 1 a in its edge region facing the pump housing 2 .
  • the region of the brush plate 11 radially adjacent to the edge region of the motor housing 1 is, likewise, also provided with a seal-accommodating stage 11 a.
  • the seal 12 is first inserted into the mutually adjacent seal-accommodating stages 1 a and 11 a during assembly of the motor housing 1 and pump housing 2 . It can be seen that the seal 12 , not yet being in the compressed condition, protrudes in the axial direction from the motor housing 1 after being inserted into the seal-accommodating stages.
  • the monitoring area 16 shown in FIG. 2 has an assisting function during the assembly process. Force monitoring can advantageously be performed to determine whether a seal is present or not. It can thereby be insured that the motor housing is not inadvertently permanently connected to the gear housing without a seal's first having been inserted into the seal-accommodating stages 1 a and 11 a.
  • the seal can in the region of the monitoring area 16 furthermore be slightly compressed in the radial direction when the seal 12 is inserted into the seal-accommodating stages 1 a and 11 a in order to fix the seal somewhat in position so that it cannot immediately drop out of the seal-accommodating stages 1 a , 11 a after being inserted.
  • a sealing function in the radial direction, though, is not associated therewith.
  • FIG. 3 is another enlarged representation in which the seal 12 is shown in the compressed condition.
  • Said compressed condition is brought about by pressing the pump housing 2 in the axial direction against the motor housing 1 then securing it in position thereon using, for example, screws.
  • the seal 12 is compressed in the axial direction while being thus pressed, as illustrated in FIG. 3 by the small arrows.
  • the seal 12 is pressed into the seal-accommodating stages 1 a and 11 a through being thus compressed in the axial direction.
  • Sealing surfaces 13 and 14 are created between the pump housing 2 and brush plate 11 through the seal's being thus pressed in. Said surfaces will prevent an ingress of brake fluid undesirably discharged from the pump housing 2 and located in the groove 17 into the motor housing's interior.
  • a sealing surface 15 is furthermore created through the seal's being thus axially pressed into the seal-accommodating stages. Said surface seals the motor housing 1 from its surroundings so that nothing from there can penetrate into the interior of the motor housing 1 .
  • the sides of the seal-accommodating stages 1 a and 11 a are slightly slanted to improve the sealing effect, particularly against an ingress of brake fluid into the interior of the motor housing 1 .
  • the slant of the brush plate's seal-accommodating stage 11 a is therein such that the seal-accommodating stage has sides enclosing an angle ⁇ that is less than 90° and preferably approximately in the 45° range.
  • sealing of the motor housing according to various embodiments will also fulfill enhanced specification requirements in terms of storage at different temperatures and temperature-change tests of the kind imposed of late.
  • a further major advantage is a simplified assembly process for the brush system. There is a robust brush system design. There is no need for silicone rubber overmolding as employed widely hitherto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)
  • Motor Or Generator Frames (AREA)
US12/094,568 2005-11-24 2006-10-23 Motor/Pump Assembly With Improved Sealing Abandoned US20090004035A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005056082 2005-11-24
DE102005056082.2 2005-11-24
PCT/EP2006/067664 WO2007060066A1 (de) 2005-11-24 2006-10-23 Motor-pumpen-aggregat mit verbesserter dichtung

Publications (1)

Publication Number Publication Date
US20090004035A1 true US20090004035A1 (en) 2009-01-01

Family

ID=37651066

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/094,568 Abandoned US20090004035A1 (en) 2005-11-24 2006-10-23 Motor/Pump Assembly With Improved Sealing

Country Status (4)

Country Link
US (1) US20090004035A1 (zh)
EP (1) EP1952509B1 (zh)
CN (1) CN101385220B (zh)
WO (1) WO2007060066A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150002002A1 (en) * 2012-03-15 2015-01-01 Grundfos Holding A/S Electrical motor
US20160118855A1 (en) * 2013-05-20 2016-04-28 Nsk Ltd. Motor, Positioning Device, Conveyance Device
US20170318251A1 (en) * 2010-08-24 2017-11-02 Nikon Corporation Imaging device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000010A1 (de) 2009-01-02 2010-07-08 Robert Bosch Gmbh Elektrisch kommutierte elektrische Maschine
JP5282126B2 (ja) * 2011-07-11 2013-09-04 日信工業株式会社 モータポンプ装置
EP3404806A1 (en) * 2017-05-18 2018-11-21 Valeo Autosystemy SP. Z.O.O. A seal for sealing an electric motor assembly, an electric motor assembly comprising such seal and a wiper motor comprising such the electric motor assembly with the seal
CN111727544B (zh) * 2018-02-15 2022-12-30 松下知识产权经营株式会社 电气设备

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5957464A (en) * 1997-07-11 1999-09-28 Interwave Communications Split dove-tail gasket channel for round gasket material
US6179580B1 (en) * 1996-10-12 2001-01-30 Robert Bosch Gmbh Motor-pump arrangement
US6208048B1 (en) * 1993-09-08 2001-03-27 Siemens Aktiengesellschaft Motor-pump unit, particularly motor vehicle anti-lock brake device having internal electrical connecting lines
US6362548B1 (en) * 1997-04-14 2002-03-26 Donnelly Corporation Housing with integral gasket components for a rearview mirror actuator assembly
US20030180163A1 (en) * 2002-02-27 2003-09-25 Markus Hartmann Motor/pump assembly for use in a braking device
US20040241009A1 (en) * 1999-10-25 2004-12-02 Dieter Dinkel Motor pump aggregate
US20050074347A1 (en) * 2003-10-02 2005-04-07 Aisan Kogyo Kabushiki Kaisha Fuel pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL172780C (nl) * 1974-07-01 1983-10-17 Lucas Benjamins Afdichtsamenstel voor de samenwerkende aanlegvlakken van deuren en deksels van drukvaten.
EP0104170B1 (en) 1982-03-23 1991-11-06 KIMBALL, David V. Apparatus for two axis screening vibration
EP0117381B1 (de) * 1983-02-25 1987-11-04 A.G. Johansons Metallfabrik Aktiebolag Rohranschluss mit Dichtungsring für hygienische Zwecke
DE19914258A1 (de) * 1999-03-29 2000-10-05 Continental Teves Ag & Co Ohg Motorangetriebenes Aggregat

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6208048B1 (en) * 1993-09-08 2001-03-27 Siemens Aktiengesellschaft Motor-pump unit, particularly motor vehicle anti-lock brake device having internal electrical connecting lines
US6179580B1 (en) * 1996-10-12 2001-01-30 Robert Bosch Gmbh Motor-pump arrangement
US6362548B1 (en) * 1997-04-14 2002-03-26 Donnelly Corporation Housing with integral gasket components for a rearview mirror actuator assembly
US5957464A (en) * 1997-07-11 1999-09-28 Interwave Communications Split dove-tail gasket channel for round gasket material
US20040241009A1 (en) * 1999-10-25 2004-12-02 Dieter Dinkel Motor pump aggregate
US20030180163A1 (en) * 2002-02-27 2003-09-25 Markus Hartmann Motor/pump assembly for use in a braking device
US20050074347A1 (en) * 2003-10-02 2005-04-07 Aisan Kogyo Kabushiki Kaisha Fuel pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170318251A1 (en) * 2010-08-24 2017-11-02 Nikon Corporation Imaging device
US20150002002A1 (en) * 2012-03-15 2015-01-01 Grundfos Holding A/S Electrical motor
US10033251B2 (en) * 2012-03-15 2018-07-24 Grundfos Holding A/S Electrical motor
US20160118855A1 (en) * 2013-05-20 2016-04-28 Nsk Ltd. Motor, Positioning Device, Conveyance Device

Also Published As

Publication number Publication date
WO2007060066A1 (de) 2007-05-31
EP1952509B1 (de) 2016-08-31
CN101385220B (zh) 2011-08-24
EP1952509A1 (de) 2008-08-06
CN101385220A (zh) 2009-03-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CONTINENTAL AUTOMOTIVE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STEEGMUELLER, HORST;TUPY, MATTHIAS;REEL/FRAME:021589/0491;SIGNING DATES FROM 20080519 TO 20080521

AS Assignment

Owner name: BROSE FAHRZEUGTEILE GMBH & CO. KOMMANDITGESELLSCHA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONTINENTAL AUTOMOTIVE GMBH;REEL/FRAME:022682/0089

Effective date: 20090507

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION