EP2125459A1 - Dispositif d'entraînement d'essuie-glace - Google Patents

Dispositif d'entraînement d'essuie-glace

Info

Publication number
EP2125459A1
EP2125459A1 EP07821953A EP07821953A EP2125459A1 EP 2125459 A1 EP2125459 A1 EP 2125459A1 EP 07821953 A EP07821953 A EP 07821953A EP 07821953 A EP07821953 A EP 07821953A EP 2125459 A1 EP2125459 A1 EP 2125459A1
Authority
EP
European Patent Office
Prior art keywords
wiper drive
shaft
rod
motor shaft
windscreen wiper
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Withdrawn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
EP07821953A
Other languages
German (de)
English (en)
Inventor
Stephan Pauli
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 EP2125459A1 publication Critical patent/EP2125459A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/166—Means for transmitting drive characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/18—Means for transmitting drive mechanically
    • B60S1/24—Means for transmitting drive mechanically by rotary cranks
    • B60S1/245—Means for transmitting drive mechanically by rotary cranks with particular rod arrangements between the motor driven axle and the wiper arm axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
    • B60S1/58—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows
    • B60S1/583—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows including wiping devices

Definitions

  • the invention relates to a windshield wiper drive, in particular for motor vehicles according to the preamble of claim 1.
  • Windscreen wiper drives are known in various forms. In windshield wiper drives, it is common practice to operate the electric drive motor as Um Kunststoffmotor. In this case, the drive motor drives a seated on the motor shaft worm gear, which meshes with a worm wheel made of plastic, whose axis of rotation is formed by a wiper shaft carrying the wiper arm. In order to realize a self-locking of the known windshield wiper drive in order to avoid unwanted windshield wiper movement due to the wind, the electric drive motor is energized permanently even when windshield wipers are not actuated, to generate a torque in the direction wiper end position.
  • rear windscreen wiper drives are known in which the worm wheel driven on a gear worm of plastic drives a transfer gear, which is coupled to the wiper shaft.
  • rear wiper drives self-locking is realized by the special design of the teeth of the circulating gear.
  • a permanent energization of the drive motor is in such a transmission is not necessary, however, a relatively complicated to be mounted transfer gear must be used, which is known to be limited.
  • the invention is therefore based on the object to propose a windshield wiper drive with reduced space requirements.
  • the invention is based on the idea to provide as a transmission device of the windshield wiper drive coupled to a spindle transmission power transmission linkage with at least one push / pull rod.
  • a transmission device designed in this way makes it possible to reduce the installation space for the windshield wiper drive in comparison with known windshield wiper drives, since the large-volume (large diameter) worm wheel made of plastic can be dispensed with.
  • the worm wheel is replaced by the preferably directly connected to the wiper shaft power transmission linkage replaced, which converts a translational movement of the spindle gear in a rotational movement of the wiper shaft.
  • a Spindelgetrie- bes as part of the transmission device also makes it possible to realize a self-locking of the windshield wiper drive, so that can be dispensed with a permanent energization of the drive motor without having to provide a space-consuming Zahnradumsetzgetriebe.
  • the spindle of the spindle gear is formed by an external thread portion of the motor shaft.
  • the motor shaft does not necessarily have to be designed in one piece, which is preferred, however, but the external thread section can be formed by a shaft part which is connected in a rotationally fixed manner to the actual motor shaft carrying a winding armature.
  • the external thread forming the spindle is introduced directly into the circumferential surface of the motor shaft, which is preferably made of metal. This measure makes it possible to dispense with a separate fastening step for fixing an externally threaded section on the motor shaft.
  • the external thread section is a separate component and to fix this on the motor shaft or a motor shaft section.
  • a press fit between a sleeve having an external thread and the motor shaft or the motor shaft section is preferably realized for this purpose.
  • the spindle gear next to the male threaded portion on a driver which is with its internal thread with the male threaded portion of the motor shaft is engaged, whereby the driver moves in a rotation of the motor shaft with effetgewindeab- section in the axial direction relative to the male threaded portion.
  • the driver is connected to a first rod of the power transmission linkage.
  • the power transmission linkage comprises at least two, preferably only two rods, wherein preferably the first rod of the power transmission linkage hingedly connected to the driver and another pivot joint articulated to a second rod is, which is preferably connected directly rotatably connected to the wiper arm carrying the wiper shaft.
  • the electric drive motor of the windshield wiper drive is operated as a reversing motor, that is, alternately in opposite rotational ⁇ directions is operable.
  • a Um Tavernelektro- is provided for reversing the polarity of the operating current.
  • the wiper drive of the invention is be ⁇ vorzugt as a rear window wiper drive, can be used even ⁇ course, but also as a front windshield wiper drive.
  • Fig. 1 a first embodiment of a windshield wiper drive with a Spindelge ⁇ gear and a power transmission linkage, where ⁇ at a first rod of the Kraftübertragungsge ⁇ rod is pivotally connected to a driver of the spindle gear and
  • Fig. 2 an alternative embodiment of a windshield wiper drive, in which a first rod of the power transmission linkage rigid with the driver is connected and a second rod of the power transmission linkage is designed as a variable-length rod.
  • Fig. 1 designed as a rear window wiper drive windshield wiper drive 1 is shown in a schematic representation.
  • the windshield wiper drive 1 comprises a pole housing 2, which is fixed to a transmission housing 3.
  • a transmission housing 3 Within the pole housing 2, only schematically indicated electric drive motor 4 is shown with a seated on a motor shaft 5 anchor 6.
  • the stator magnets accommodated in the pole housing 2 are not shown for reasons of clarity.
  • the drive motor 4 can be operated by means of reversing electronics, not shown, with alternating direction.
  • the motor shaft 5 is mounted with one bearing 7, 8 in the pole housing 2 and in the transmission housing 3.
  • a sleeve 9 made of metal in a press fit with an external thread formed as a fine thread 10.
  • the sleeve 9 and the external thread 10 together form a male smokedgewindeabêt 11 of the motor shaft 5.
  • the male threaded portion 11 turn forms the spindle of a spindle gear 12th
  • a driver 13 which is in engagement with the external thread 10 of the male threaded portion 11 with an internal thread, not shown.
  • the translatory adjusting movement of the driver 13 is transmitted by means of a power transmission linkage 15 to a standing perpendicular to the plane of the wiper shaft 14.
  • the power transmission linkage 15 comprises a first rod 16 (push / pull rod) which is articulated to the driver 13 by means of a first pivot joint 20.
  • a second pivot joint 18 is arranged, with which the first rod 16 is pivotally connected to a second rod 19.
  • the second rod 19 is rotatably connected to the drive shaft 14 and puts them in a translational movement of the driver 13 in a rotational movement over a certain angle of rotation.
  • the first rod 16 of the power transmission linkage 15 is rigidly connected to the driver 13 and runs parallel to the motor shaft 5.
  • the second rod 19 is not designed as a rigid component, but as a variable-length telescopic rod.
  • the second rod 19 pivots about the hinge 17 and thereby changes their effective length. With its free end, the second rod 19 is rotatably connected to the wiper shaft 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Dispositif d'entraînement d'essuie-glace (1) qui comporte un moteur d'entraînement (4) pourvu d'un arbre de moteur (5) et un arbre d'essuie-glace (14) couplé par l'intermédiaire d'un dispositif de transmission à l'arbre de moteur (5). Selon la présente invention, le dispositif de transmission comporte une transmission à broche (12) qui est couplée à l'arbre d'essuie-glace (14) via au moins une tringlerie (15) de transmission de force comportant au moins une première tige (16)
EP07821953A 2006-12-27 2007-10-29 Dispositif d'entraînement d'essuie-glace Withdrawn EP2125459A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610061632 DE102006061632A1 (de) 2006-12-27 2006-12-27 Scheibenwischerantrieb
PCT/EP2007/061593 WO2008080652A1 (fr) 2006-12-27 2007-10-29 Dispositif d'entraînement d'essuie-glace

Publications (1)

Publication Number Publication Date
EP2125459A1 true EP2125459A1 (fr) 2009-12-02

Family

ID=38787188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07821953A Withdrawn EP2125459A1 (fr) 2006-12-27 2007-10-29 Dispositif d'entraînement d'essuie-glace

Country Status (5)

Country Link
EP (1) EP2125459A1 (fr)
CN (1) CN101588947A (fr)
BR (1) BRPI0721037A2 (fr)
DE (1) DE102006061632A1 (fr)
WO (1) WO2008080652A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008042706A1 (de) 2008-10-09 2010-04-15 Robert Bosch Gmbh Antriebsvorrichtung
DE102008042707A1 (de) * 2008-10-09 2010-04-15 Robert Bosch Gmbh Antriebsvorrichtung
DE102009027155A1 (de) 2009-06-24 2010-12-30 Robert Bosch Gmbh Antriebsvorrichtung für eine Scheibenwischanlage
DE102009045078A1 (de) 2009-09-29 2011-03-31 Robert Bosch Gmbh Scheibenwischerantrieb
FR2972410B1 (fr) * 2011-03-10 2013-03-22 Falgayras Sas Dispositif d'essuie-glace a vis a billes et fourchette

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735307C (de) * 1937-07-26 1943-05-12 Lamaudiere Paul F J Scheibenwischer
US2608103A (en) * 1949-01-28 1952-08-26 Times Facsimile Corp Worm gear drive
DE2013401B2 (de) * 1970-03-20 1973-02-01 SWF Spezialfabnk fur Autozubehör Gustav Rau GmbH, 7120 Bietigheim Scheibenwicher, insbesondere fuer kraftfahrzeuge
JPH0788157B2 (ja) * 1988-01-19 1995-09-27 株式会社日本自動車部品総合研究所 車両用ワイパ装置
JP2510792Y2 (ja) * 1992-02-27 1996-09-18 アスモ株式会社 モ―タの軸支装置
IT1280993B1 (it) * 1995-10-20 1998-02-11 Magneti Marelli Spa Dispositivo tergicristallo per autoveicoli.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008080652A1 *

Also Published As

Publication number Publication date
DE102006061632A1 (de) 2008-07-03
BRPI0721037A2 (pt) 2014-07-29
CN101588947A (zh) 2009-11-25
WO2008080652A1 (fr) 2008-07-10

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