DE102007022192A1 - Gear casing for electrical drive unit of vehicle windscreen wiper, includes projecting air vent channel with water-shedding diaphragm - Google Patents

Gear casing for electrical drive unit of vehicle windscreen wiper, includes projecting air vent channel with water-shedding diaphragm Download PDF

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Publication number
DE102007022192A1
DE102007022192A1 DE102007022192A DE102007022192A DE102007022192A1 DE 102007022192 A1 DE102007022192 A1 DE 102007022192A1 DE 102007022192 A DE102007022192 A DE 102007022192A DE 102007022192 A DE102007022192 A DE 102007022192A DE 102007022192 A1 DE102007022192 A1 DE 102007022192A1
Authority
DE
Germany
Prior art keywords
housing
diaphragm
transmission
plug
cover
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Withdrawn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
DE102007022192A
Other languages
German (de)
Inventor
Hans-Jürgen Kulinna
Wolfgang Ostrowski
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Priority to DE102007022192A priority Critical patent/DE102007022192A1/en
Publication of DE102007022192A1 publication Critical patent/DE102007022192A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/06Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16Means for transmitting drive
    • B60S1/166Means for transmitting drive characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30Structural association with control circuits or drive circuits
    • H02K11/38Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2205/00Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09Machines characterised by drain passages or by venting, breathing or pressure compensating means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel

Abstract

The invention relates to a transmission housing for one, which houses a transmission and control electronics for the windscreen wiper motor and having a sealingly arranged gear cover and a venting device with a diaphragm. It solves the problem of designing the gear housing so that, when ensuring a pressure equalization between the housing interior and the housing environment, the penetration of moisture into it is prevented, or at least largely avoided. For this purpose, a venting channel (9) projecting on the gear housing (3) is formed as a venting device, which is closed by the diaphragm (7), wherein the axis (A) is perpendicular or substantially perpendicular to the output shaft (4) of the transmission.

Description

  • The The invention relates to a transmission housing for an electric drive unit a windscreen wiper, which has a vent and at this a diaphragm having.
  • to Avoiding a negative pressure in a transmission housing a electric drive unit of a windshield wiper with an in this arranged control electronics for the windscreen wiper motor it is known in the wall of the gear housing with a vent to arrange a diaphragm, which is a pressure equalization between the Environment and the housing interior allows. To protect the diaphragm from mechanical damage this is advantageously associated with a protective cover. The diaphragm However, the ingress of moisture from the ambient air, which does not get completely into the housing interior with a pressure equalization. In addition, moisture, which in the form of water at the vom Diaphragm spaced arranged protective cover for this due to the position of the diaphragm and the protective cover on the gearbox do not drain can affect the function of the diaphragm and this if necessary pollute and also get into the gearbox. penetrated In turn, moisture can cause the failure of the control electronics and with the windshield wiper.
  • It Object of the invention, a transmission housing for an electric drive unit a windshield wiper according to the preamble of claim 1 so make sure that, while ensuring a pressure equalization between the housing interior and the housing environment prevents the penetration of moisture into this, at least However, as far as possible avoided.
  • These Task is in a transmission housing according to the preamble of Claim 1 solved by its characterizing features. advantageous Embodiments are listed in the subclaims.
  • The Invention is that of a transmission housing with a lower housing part and a housing cover an electric drive unit of a windshield wiper, the next a transmission and an electronic control unit for a (wiper) wiper motor houses and on which a vent with one of these closing Diaphragm (diaphragm) is arranged, the vent as a protruding on the housing vent channel is formed, whose axis is perpendicular or substantially perpendicular is arranged to the output shaft of the transmission. This gets that Diaphragm in the nominal position of the drive unit in the vehicle in a position in which water that gets to this, as a result of Gravity rolls off and thus does not penetrate into the transmission housing can. In addition, because of the transmission housing on the above venting channel no moisture or even water in the immediate area of the diaphragm. The diaphragm is thus subject to one Self-cleaning.
  • Advantageous is the venting channel in a region of the transmission housing arranged, which is protected against mechanical damage, in particular on the housing cover and in paraxial alignment with the housing to the lower part connected pot for the wiper motor and thereby in between this and a plug contact housing for the control electronics formed gap. In this way the diaphragm is protected, and it can be a touch and also mechanical damage the same during assembly or disassembly of the drive unit on the vehicle almost excluded. A separately arranged protective cover for the Diaphragm can be omitted.
  • Of Furthermore, it is advantageous if the venting channel on a plug-in element is formed, sealing in a housing formed on the receiving opening is used. Thus, the diaphragm is outside the housing on vent channel can be arranged and compatible with the plug-in element to form a unit. Usually consist of the housing and the diaphragm made of plastic, and the latter is at the vent channel welded. happens this on the case, it can cause damage at this and / or the housing / lid seal come. The plug element is expediently with a receptacle for the Diaphragm provided so that this facilitates and process reliable weldable is.
  • Of the housing cover has housing lower part side a circumferential groove for receiving a lid seal on. In the area the receiving opening is this recessed to receive a plug-in element seal, the Sealing element seals in the radial direction relative to the housing. Advantageous the plug-in element seal is integrally formed on the cover gasket. Further advantageously, this can be in one piece with a two-component injection molding process the housing cover get connected.
  • The housing cover with the receiving opening and the recess for the plug-in element seal in the groove for the cover gasket can also be used when no venting is required because an electronic control system is not available. In this case, the plug element seal has no opening and closes the receptacle measurement aperture.
  • The Invention will be explained below using an exemplary embodiment. In the accompanying drawings demonstrate:
  • 1 a drive unit of a windshield wiper,
  • 2 : the gearbox cover of the drive unit, inside and simplified,
  • 3 a gear cover portion with the arranged therein venting device in the manner of an exploded view and
  • 4 : the gearbox section with complete venting device.
  • In the 1 shown drive unit is of a windshield wiper motor, not shown, in a pot-shaped motor housing 1 is housed, and a transmission housing 2 with a gearbox cover 3 made of plastic, which is an unillustrated worm gear with a worm wheel and an output shaft 4 as well as not shown control electronics for the windscreen wiper motor accommodates. The (gearbox) output shaft 4 is arranged perpendicular to the output shaft of the windshield wiper motor and serves to arrange a windshield wiper or a motion transmission linkage. On the motor housing side side of the gearbox cover 3 is a receiving opening 5 for a plug-in element ( 6 . 2 to 4 ) with a diaphragm ( 7 . 2 to 4 ) formed as a vent above. The axis A of the receiving opening 5 stands perpendicular to the output shaft 4 of the worm gear and is axially parallel to the motor housing 1 arranged. Next to the receiving opening 5 is also a plug contact housing 8th formed for connecting the control electronics to the electrical system, whereby the receiving opening 5 in the between the motor housing 1 and the plug contact housing 8th positioned and through these ( 1 . 8th ) is protected from mechanical contact and damage when handling the drive unit.
  • 2 shows the gearbox cover 3 in a rotated about the axis A 180 ° position and thus inside. The receiving opening 5 is the plug made of plastic 6 assigned and this in turn the diaphragm 7 , a membrane made of Goretex, with the plug element 6 a continuous venting channel 9 and on the gearbox cover 3 opposite side of an approach 10 for receiving the diaphragm 7 having.
  • The gear cover 3 is housing lower part side with a circumferential groove 11 for receiving a lid seal 12 Mistake. This groove 11 is in the area of the receiving opening 5 deepened and to a recording 14 for a plug-in element seal 13 trained in what 3 can be seen more clearly. The 2 and 3 show the plug element seal 13 , This is with the lid gasket 12 integrally connected and has an opening 15 for passing and sealing the plug-in element 6 on. In 3 is also the training of the approach 10 as a receptacle for the diaphragm 7 more clearly than in 2 to recognize. Inside the neck 10 is a radially formed circumferential abutment shoulder 16 for this ( 7 ) educated.
  • In 4 the venting device is shown in the assembled state. For assembly, first the lid seal 12 in the groove 11 inserted, whereby also the plug element seal 13 in the recording 14 arrives. Alternatively, the lid seal 12 by a two-component injection molding in one piece with the gear cover 3 connected and therefore already exist. The diaphragm 7 becomes with the plug element 6 welded and as a unit in the receiving opening 5 arranged. This is the plug-in element 6 also in the plug element seal 13 arranged and sealed by these in the radial direction.
  • 1
    motor housing
    2
    gearbox
    3
    transmission cover
    4
    output shaft
    5
    receiving opening
    6
    plug-in element
    7
    diaphragm
    8th
    Male Pins Shell
    9
    vent channel
    10
    approach
    11
    groove
    12
    cover gasket
    13
    Plug element sealing
    14
    admission
    15
    opening
    16
    contact shoulder
    A
    axis
    GU
    Housing bottom

Claims (12)

  1. Transmission housing for an electric drive unit of a windshield wiper housing a transmission and an electronic control unit for the windscreen wiper motor and having a sealingly arranged housing cover and a venting device with a diaphragm, characterized in that a venting device on the housing ( 3 ) projecting venting channel ( 9 ) formed by the diaphragm ( 7 ) locked with its axis (A) perpendicular or substantially perpendicular to the output shaft ( 4 ) of the transmission is arranged.
  2. Transmission housing according to claim 1, characterized in that the venting channel ( 9 ) in an area of the housing ( 3 ), which is protected against mechanical damage.
  3. Transmission housing according to claim 1, characterized in that the venting channel ( 9 ) on the housing cover ( 3 ) is arranged.
  4. Transmission housing according to claim 2, characterized in that the venting channel ( 9 ) parallel to the axis to a lower housing part (GU) connected cup-shaped motor housing ( 1 ) for the windscreen wiper motor and in between this ( 1 ) and a plug contact housing ( 8th ) is arranged for the control electronics formed intermediate space.
  5. Gear housing according to one or more of the preceding claims, characterized in that the ventilation channel ( 9 ) on a plug-in element ( 6 ) formed in one with this ( 6 ) corresponding receiving opening ( 5 ) on the housing ( 3 ) is inserted sealingly.
  6. Transmission housing according to claim 5, characterized in that the plug element ( 6 ) with the diaphragm ( 7 ) forms a structural unit.
  7. Transmission housing according to claim 5 or 6, characterized in that the plug element ( 6 ) on the housing ( 3 ), an approach ( 10 ) larger inside diameter than that of the venting channel ( 9 ) with an on the inside radially formed abutment shoulder ( 16 ) for the diaphragm ( 7 ) having.
  8. Transmission housing according to claim 5, 6 or 7, characterized in that the plug element ( 6 ) is a plastic part, and that the diaphragm ( 7 ) is welded to this.
  9. Gear box according to one or more of the preceding claims, characterized in that the gear cover ( 3 ) housing lower part side a circumferential groove ( 11 ) for receiving a cover seal ( 12 ) having.
  10. Gear housing according to claim 9, characterized in that the groove ( 11 ) in the region of the receiving opening ( 5 ) and deepening a recording ( 14 ) for a plug-in element seal ( 13 ) trains.
  11. Transmission housing according to claim 10, characterized in that the plug element seal ( 13 ) Part of the lid seal ( 12 ).
  12. Transmission housing according to claim 11, characterized in that the cover seal ( 12 ) in a two-component injection molding with the gear cover ( 3 ) is integrally connected.
DE102007022192A 2007-05-11 2007-05-11 Gear casing for electrical drive unit of vehicle windscreen wiper, includes projecting air vent channel with water-shedding diaphragm Withdrawn DE102007022192A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102007022192A DE102007022192A1 (en) 2007-05-11 2007-05-11 Gear casing for electrical drive unit of vehicle windscreen wiper, includes projecting air vent channel with water-shedding diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007022192A DE102007022192A1 (en) 2007-05-11 2007-05-11 Gear casing for electrical drive unit of vehicle windscreen wiper, includes projecting air vent channel with water-shedding diaphragm

Publications (1)

Publication Number Publication Date
DE102007022192A1 true DE102007022192A1 (en) 2008-11-13

Family

ID=39829406

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102007022192A Withdrawn DE102007022192A1 (en) 2007-05-11 2007-05-11 Gear casing for electrical drive unit of vehicle windscreen wiper, includes projecting air vent channel with water-shedding diaphragm

Country Status (1)

Country Link
DE (1) DE102007022192A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009135716A2 (en) * 2008-05-06 2009-11-12 Robert Bosch Gmbh Housing for a drive device, drive device and method for testing the tightness of a pressure compensating membrane
DE102009046978A1 (en) 2009-11-23 2011-05-26 Robert Bosch Gmbh Cover for closing transmission housing of electric drive of windscreen wiper of motor vehicle, has sealing element for sealing connection between inspection stamp and cover during functional testing of pressure compensation device
WO2012079899A1 (en) * 2010-12-17 2012-06-21 Robert Bosch Gmbh Driving device, in particular for a windscreen wiper apparatus in a vehicle
DE102011119875A1 (en) * 2011-12-01 2013-06-06 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Electromotive actuator for parking brake of motor car, has closure element to close opening portion provided in cover surface of gear housing portion which is provided with pinion driven by electromotor
DE102015002320A1 (en) * 2015-02-26 2016-09-01 Gkn Driveline International Gmbh Ventilation device for a transmission housing
WO2019011762A1 (en) * 2017-07-12 2019-01-17 Mahle International Gmbh Control device having a connection opening through a housing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0522183A1 (en) * 1991-06-28 1993-01-13 Siemens Aktiengesellschaft Pressure compensating element sealingly mounted on the board of a carter wall
DE19702685A1 (en) * 1997-01-25 1998-07-30 Bosch Gmbh Robert Plastic casing for electric motor(s) e.g. brush casing with waterproof air vent
DE69708983T2 (en) * 1996-07-08 2002-09-19 Valeo Systemes Dessuyage Geared motor with carrier for lamella contacts
EP1363484A2 (en) * 2002-05-15 2003-11-19 Nitto Denko Corporation Ventilation member and vented housing using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0522183A1 (en) * 1991-06-28 1993-01-13 Siemens Aktiengesellschaft Pressure compensating element sealingly mounted on the board of a carter wall
DE69708983T2 (en) * 1996-07-08 2002-09-19 Valeo Systemes Dessuyage Geared motor with carrier for lamella contacts
DE19702685A1 (en) * 1997-01-25 1998-07-30 Bosch Gmbh Robert Plastic casing for electric motor(s) e.g. brush casing with waterproof air vent
EP1363484A2 (en) * 2002-05-15 2003-11-19 Nitto Denko Corporation Ventilation member and vented housing using the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009135716A2 (en) * 2008-05-06 2009-11-12 Robert Bosch Gmbh Housing for a drive device, drive device and method for testing the tightness of a pressure compensating membrane
WO2009135716A3 (en) * 2008-05-06 2009-12-30 Robert Bosch Gmbh Housing for a drive device, drive device and method for testing the tightness of a pressure compensating membrane
US8356520B2 (en) 2008-05-06 2013-01-22 Robert Bosch Gmbh Housing for a drive device, drive device and method for testing the tightness of a pressure compensating membrane
DE102009046978A1 (en) 2009-11-23 2011-05-26 Robert Bosch Gmbh Cover for closing transmission housing of electric drive of windscreen wiper of motor vehicle, has sealing element for sealing connection between inspection stamp and cover during functional testing of pressure compensation device
FR2953074A1 (en) * 2009-11-23 2011-05-27 Bosch Gmbh Robert Cover of transmission housing of an electrical drive
WO2012079899A1 (en) * 2010-12-17 2012-06-21 Robert Bosch Gmbh Driving device, in particular for a windscreen wiper apparatus in a vehicle
DE102011119875A1 (en) * 2011-12-01 2013-06-06 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Electromotive actuator for parking brake of motor car, has closure element to close opening portion provided in cover surface of gear housing portion which is provided with pinion driven by electromotor
DE102015002320A1 (en) * 2015-02-26 2016-09-01 Gkn Driveline International Gmbh Ventilation device for a transmission housing
WO2019011762A1 (en) * 2017-07-12 2019-01-17 Mahle International Gmbh Control device having a connection opening through a housing

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8139 Disposal/non-payment of the annual fee