EP1313632A1 - Windscreen wiper system comprising a tubular bearing rod - Google Patents

Windscreen wiper system comprising a tubular bearing rod

Info

Publication number
EP1313632A1
EP1313632A1 EP01940146A EP01940146A EP1313632A1 EP 1313632 A1 EP1313632 A1 EP 1313632A1 EP 01940146 A EP01940146 A EP 01940146A EP 01940146 A EP01940146 A EP 01940146A EP 1313632 A1 EP1313632 A1 EP 1313632A1
Authority
EP
European Patent Office
Prior art keywords
wiper device
shaft
wiper
electric motor
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Withdrawn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
EP01940146A
Other languages
German (de)
French (fr)
Inventor
Achim Neubauer
Wilfried Merkel
Martin-Peter Bolz
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 EP1313632A1 publication Critical patent/EP1313632A1/en
Withdrawn legal-status Critical Current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
    • B60S1/18—Means for transmitting drive mechanically
    • B60S1/26—Means for transmitting drive mechanically by toothed gearing
    • 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
    • B60S1/0413—Modular wiper assembly
    • B60S1/0422—Modular wiper assembly having a separate transverse element

Definitions

  • the invention relates to a windshield wiper device according to the type of the independent claims.
  • windshield wiper devices are already known from numerous publications. These have a
  • Pipe board which carries a rotating electric motor that drives two wiper shafts with the wipers attached to it via a crank mechanism.
  • the windshield wiper device according to the invention with the features of the main claim has the advantage that the electric motor via an output shaft over the wiper shafts drives a worm gear with a tooth structure and a worm structure.
  • a worm gear with a tooth structure and a worm structure Such. Solution is easy to implement and inexpensive to manufacture.
  • the self-locking structure of the worm gear proves to be another advantage.
  • the tooth structure connected to the wiper shaft is designed as a segment of a worm wheel, only the region of the worm wheel that is required for operating the windshield wiper device is advantageously formed. As a result, the space requirement of the windshield wiper device can be reduced.
  • the windshield wiper device can advantageously drive the two windshield wipers that are usual on a windshield of a motor vehicle with an electric motor.
  • the electric motor is arranged between the two wiper bearings.
  • the longitudinal extent of the windshield wiper device is reduced to a minimum required size.
  • a more favorable force distribution on the drive shaft is achieved.
  • the output shaft extends through the full length of the electric motor and has two ends, on each of which the screw structure is arranged. So there is no separate reversing gear needed to convert the movement of the armature shaft to the output shaft.
  • a gear is arranged between the tooth structure and the wiper shaft, with which the movement ranges and speeds of the wiper shafts can be set.
  • Screw structures of the output shaft have different pitches, since the range of motion and the speed of movement of the wiper shafts can also be set in this way.
  • the tooth structures connected to the wiper shafts in a rotationally fixed manner have different geometries, since the movement ranges and speeds of the wiper shafts can also be set in this way.
  • the output shaft is arranged essentially parallel to the longitudinal extension of the tubular plate, this advantageously results in a small size for the windshield wiper device.
  • Figure 1 shows a windshield wiper device according to the invention in a schematic representation.
  • the windshield wiper device 10 shown in FIG. 1 consists of a tubular plate 12 which has a tubular support part 14 with a longitudinal extension, in the middle of which a motor support part 16 is fastened.
  • Shaped tubes 18 are arranged at the two ends of the tubular support part 14, which receive the bearings 20.
  • the molded tubes 18 and the carrier part 14 can also be formed in one piece.
  • the bearings 20 can also be made in one piece from the carrier part 14 and / or the molded tubes 18.
  • An electric motor 22 is arranged on the motor support part 16 and an output shaft 24 extends through its entire length.
  • the electric motor 22 is designed as a reversible, electronically commutated electric motor.
  • the output shaft 24 can be the armature shaft of the electric motor 22 itself, but also a separate shaft that is geared up or down through a gear.
  • tooth structures 28 are arranged, which are in engagement with tooth structures 28, which are connected in a rotationally fixed manner to the wiper shafts 30 arranged in the wiper bearings 20.
  • the tooth structures 28 can be designed as a segment of a worm wheel, which either directly with the wiper shaft 30 or via an over /
  • Reduction gear are connected to the wiper shaft 30.
  • the electric motor 22 can also be used the wiper shafts 30 may be arranged, in which case the output shaft 24 exits only on one side of the electric motor 22 and has a plurality of screw structures 26 in accordance with the number of wiper shafts 30 or tooth structures 28.

Landscapes

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

Abstract

The invention relates to a windscreen wiper system (10) comprising a tubular bearing rod (12), which bears at least one electromotor, in particular, an electronically commutated, reversible electromotor (22) with a drive shaft (24) and at least one bearing (20) that supports a wiper shaft (30). Said wiper shaft (30) can be driven by the electromotor (22). A toothed structure (28) is connected to the wiper shaft(s) (30), said structure being in contact with a helicoidal structure (26) of the drive shaft (24).

Description

Scheibenwischvorrichtung mit einer Rohrplatine-Windshield wiper device with a tube board
Stand der TechnikState of the art
Die Erfindung betrifft eine Scheibenwischvorrichtung nach Gattung der unabhängigen Ansprüche. Derartige Scheibenwischvorrichtungen sind aus zahlreichen Veröffentlichungen bereits bekannt. Diese weisen eineThe invention relates to a windshield wiper device according to the type of the independent claims. Such windshield wiper devices are already known from numerous publications. These have a
Rohrplatine auf, welche einen rund laufenden Elektromotor trägt, der über ein Kurbelgetriebe zwei Wischerwellen mit den daran befestigten Scheibenwischern antreibt.Pipe board, which carries a rotating electric motor that drives two wiper shafts with the wipers attached to it via a crank mechanism.
Weiterhin ist bekannt, Wischerwellen über ein Seilzuggetriebe anzutreiben.It is also known to drive wiper shafts via a cable drive.
Beide Lösungen sind jedoch aufwendig in der Herstellung und deshalb sehr kostenintensiv.However, both solutions are complex to manufacture and therefore very cost-intensive.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Scheibenwischvorrichtung mit den Merkmalen des Hauptanspruchs hat den Vorteil das der Elektromotor über eine Abtriebswelle die Wischerwellen über ein Schneckengetriebe mit einer Zahnstruktur und einer Schneckenstruktur antreibt. Eine solche. Lösung ist einfach zu realisieren und kostengünstig herzustellen. Darüber hinaus erweist sich die selbsthemmende Struktur des Schneckengetriebes als ein weiterer Vorteil .The windshield wiper device according to the invention with the features of the main claim has the advantage that the electric motor via an output shaft over the wiper shafts drives a worm gear with a tooth structure and a worm structure. Such. Solution is easy to implement and inexpensive to manufacture. In addition, the self-locking structure of the worm gear proves to be another advantage.
Durch die in der Unteransprüchen aufgeführten Maßnahmen ergeben sich vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen MerkmaleThe measures listed in the subclaims result in advantageous developments and improvements of the features specified in the main claim
Ist die mit der Wischerwelle verbundene Zahnstruktur als Segment eines Schneckenrades ausgebildet, so wird vorteilhafter Weise nur der Bereich des Schneckenrades ausgebildet, der zum Betrieb der Scheibenwischvorrichtung von Nöten ist . Dadurch kann der Raumbedarf der Scheibenwischvorrichtung reduziert werden.If the tooth structure connected to the wiper shaft is designed as a segment of a worm wheel, only the region of the worm wheel that is required for operating the windshield wiper device is advantageously formed. As a result, the space requirement of the windshield wiper device can be reduced.
Trägt die Rohrplatine zwei Wischerlager und einen Elektromotor, so kann die Scheibenwischvorrichtung vorteilhafter Weise mit einem Elektromotor die beiden auf einer Frontscheibe eines Kraftfahrzeuges üblichen Scheibenwischer antreiben.If the tubular plate carries two wiper bearings and an electric motor, the windshield wiper device can advantageously drive the two windshield wipers that are usual on a windshield of a motor vehicle with an electric motor.
Weiterhin ist es von besonderem Vorteil, wenn der Elektromotor zwischen den beiden Wischerlagern angeordnet ist. Auf diese Weise wird die Längserstreckung der Scheibenwischvorrichtung auf ein minimal benötigtes Maß reduziert. Außerdem wird so eine günstigere Kraftverteilung auf der Antriebswelle erreicht.Furthermore, it is particularly advantageous if the electric motor is arranged between the two wiper bearings. In this way, the longitudinal extent of the windshield wiper device is reduced to a minimum required size. In addition, a more favorable force distribution on the drive shaft is achieved.
Dabei ist es besonders vorteilhaft wenn die Abtriebswelle den Elektromotor in seiner vollen Länge durchgreift und zwei Enden aufweist, an denen jeweils die Schneckenstruktur angeordnet ist . So wird kein separates Umlenkgetriebe benötigt, um die Bewegung der Ankerwelle auf die Abtriebswelle umzusetzen.It is particularly advantageous if the output shaft extends through the full length of the electric motor and has two ends, on each of which the screw structure is arranged. So there is no separate reversing gear needed to convert the movement of the armature shaft to the output shaft.
Weiterhin ist es vorteilhaft wenn die Wischerwelle und die Zahnstruktur drehfest miteinander verbunden sind, da ohne ein dazwischen liegendes Getriebe die Herstellungskosten weiter verringert werden können.Furthermore, it is advantageous if the wiper shaft and the tooth structure are connected to one another in a rotationally fixed manner, since the manufacturing costs can be reduced further without an intermediate gear.
Um eine maximale Flexibilität zu erreichen ist es vorteilhaft wenn zwischen Zahnstruktur und Wischerwelle ein Getriebe angeordnet ist, mit welchen die Bewegungsbereiche und Geschwindigkeiten der Wischerwellen eingestellt werden können.In order to achieve maximum flexibility, it is advantageous if a gear is arranged between the tooth structure and the wiper shaft, with which the movement ranges and speeds of the wiper shafts can be set.
Dazu ist es auch besonders vorteilhaft wenn dieIt is also particularly advantageous if the
Schneckenstrukturen der Abtriebswelle unterschiedliche Steigungen aufweisen, da auch auf diese Weise, Bewegungsbereiche und Bewegungsgeschwindigkeiten der Wischerwellen eingestellt werden können.Screw structures of the output shaft have different pitches, since the range of motion and the speed of movement of the wiper shafts can also be set in this way.
Weiterhin ist es vorteilhaft wenn die mit den Wischerwellen drehfest verbundenen Zahnstrukturen unterschiedliche Geometrien aufweisen, da auf diese Weise ebenfalls die Bewegungsbereiche und Geschwindigkeiten der Wischerwellen eingestellt werden können.Furthermore, it is advantageous if the tooth structures connected to the wiper shafts in a rotationally fixed manner have different geometries, since the movement ranges and speeds of the wiper shafts can also be set in this way.
Ist die Abtriebswelle im wesentlichen parallel zur Längsausstreckung der Rohrplatine angeordnet, so ergibt sich vorteilhafterweise für die Scheibenwischvorrichtung eine geringe Baugröße .If the output shaft is arranged essentially parallel to the longitudinal extension of the tubular plate, this advantageously results in a small size for the windshield wiper device.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert . Figur 1 zeigt eine erfindungsgemäße Scheibenwischvorrichtung in schematischer Darstellung.An embodiment of the invention is shown in the drawing and in the following description explained. Figure 1 shows a windshield wiper device according to the invention in a schematic representation.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Die in Figur 1 gezeigte Scheibenwischvorrichtung 10 besteht aus einer Rohrplatine 12, die eine rohrförmiges Trägerteil 14 mit einer Längserstreckung aufweist, in dessen Mitte ein Motorträgerteil 16 befestigt is . An den beiden Enden des rohrformigen Trägerteils 14 sind Formrohre 18 angeordnet, welche die Lager 20 aufnehmen. Natürlich können die Formrohre 18 und das Trägerteil 14 auch einstückig ausgebildet sein. Auch können die Lager 20 einstückig aus dem Trägerteil 14 und/oder den Formrohren 18 gefertigt sein.The windshield wiper device 10 shown in FIG. 1 consists of a tubular plate 12 which has a tubular support part 14 with a longitudinal extension, in the middle of which a motor support part 16 is fastened. Shaped tubes 18 are arranged at the two ends of the tubular support part 14, which receive the bearings 20. Of course, the molded tubes 18 and the carrier part 14 can also be formed in one piece. The bearings 20 can also be made in one piece from the carrier part 14 and / or the molded tubes 18.
Am Motorträgerteil 16 ist ein Elektromotor 22 angeordnet der in seiner ganzen Länge von einer Abtriebswelle 24 durchgriffen wird. Der Elektromotor 22 ist dabei als reversierfähiger, elektronisch kommutierter Elektromotor ausgebildet. Die Abtriebswelle 24 kann dabei die Ankerwelle des Elektromotors 22 selbst, aber auch eine gesonderte, über ein Getriebe über-/oder untersetzte Welle sein.An electric motor 22 is arranged on the motor support part 16 and an output shaft 24 extends through its entire length. The electric motor 22 is designed as a reversible, electronically commutated electric motor. The output shaft 24 can be the armature shaft of the electric motor 22 itself, but also a separate shaft that is geared up or down through a gear.
An den beiden Enden der Abtriebswelle 24 sind jeweils Schneckenstrukturen 26 angeordnet, die mit Zahnstrukturen 28, welche mit den in den Wischerlagerή 20 angeordneten Wischerwellen 30 drehfest verbunden sind, in Eingriff stehen. Die Zahnstrukturen 28 können dabei als Segment eines Schneckenrades ausgebildet sein, welche entweder direkt mit der Wischerwelle 30 oder über ein Über-/At the two ends of the output shaft 24, screw structures 26 are arranged, which are in engagement with tooth structures 28, which are connected in a rotationally fixed manner to the wiper shafts 30 arranged in the wiper bearings 20. The tooth structures 28 can be designed as a segment of a worm wheel, which either directly with the wiper shaft 30 or via an over /
Untersetzungsgetriebe mit der Wischerwelle 30 verbunden sind.Reduction gear are connected to the wiper shaft 30.
In einer Variante der erfindungsgemäßen Scheibenwischvorrichtung kann der Elektromotor 22 auch neben den Wischerwellen 30 angeordnet sein, wobei in diesem Falle die Abtriebswelle 24 nur auf einer Seite des Elektromotors 22 auf austritt und entsprechend der Anzahl der Wischerwellen 30, bzw. der Zahnstrukturen 28 mehrere Schneckenstrukturen 26 aufweist.In a variant of the windshield wiper device according to the invention, the electric motor 22 can also be used the wiper shafts 30 may be arranged, in which case the output shaft 24 exits only on one side of the electric motor 22 and has a plurality of screw structures 26 in accordance with the number of wiper shafts 30 or tooth structures 28.
Ebenso ist es möglich nur eine Wischerwelle 30 mit einer Zahnstruktur 28 zu versehen, diese mit einem Elektromotor 22 anzutreiben und weitere -Wischerwellen beispielsweise über Seilzugmechanismen oder Hebelmechanismen anzutreiben. It is also possible to provide only one wiper shaft 30 with a tooth structure 28, to drive it with an electric motor 22 and to drive further wiper shafts, for example via cable pull mechanisms or lever mechanisms.

Claims

Ansprüche Expectations
1. Scheibenwischvorrichtung (10) mit einer Rohrplatine (12), die mindestens einen, insbesondere elektronisch kommutierten, reversierfähigen Elektromotor (22) mit einer Antriebswelle (24) , und mindestens ein, eine1. Windshield wiper device (10) with a tubular plate (12), the at least one, in particular electronically commutated, reversible electric motor (22) with a drive shaft (24), and at least one
Wischerwelle (30) lagerndes Lager (20) trägt, wobei die Wischerwelle (30) durch den Elektromotor (22) antreibbar ist', dadurch gekennzeichnet, dass mit der mindestens einen Wischerwelle (30) eine Zahnstruktur (28) verbunden ist, welche mit einer Schneckenstruktur (26) derWiper shaft (30) supports bearing (20), the wiper shaft (30) being drivable by the electric motor (22) ' , characterized in that the at least one wiper shaft (30) is connected to a tooth structure (28) which is connected to a Screw structure (26) of the
Antriebswelle (24) in Eingriff steht.Drive shaft (24) is engaged.
2. Scheibenwischvorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zahnstruktur (28) als Segment eines Schneckenrades ausgebildet ist.2. Windscreen wiper device (10) according to one of the preceding claims, characterized in that the tooth structure (28) is designed as a segment of a worm wheel.
'3. Scheibeinwischvorrichtung (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Rohrplatine (12) zwei Lager (20) und einen Elektromotor (22) trägt.'. 3 Windscreen wiper device (10) according to claim 1 or 2, characterized in that the tubular plate (12) carries two bearings (20) and an electric motor (22).
4. Scheibenwischvorrichtung (10) nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Elektromotor (22) zwischen den beiden Lagern (20) angeordnet ist. 4. Windshield wiper device (10) according to claim 2 or 3, characterized in that the electric motor (22) is arranged between the two bearings (20).
5. Scheibenwischvorrichtung (10) nach Anspruch 2, 3 oder 4, dadurch gekennzeichnet, dass die Antriebswelle (24) den Elektromotor (22) in seiner vollen Länge durchgreift -und zwei Enden aufweist, an denen jeweils die Schneckenstruktur (26) angeordnet ist.5. Windscreen wiper device (10) according to claim 2, 3 or 4, characterized in that the drive shaft (24) extends through the full length of the electric motor (22) and has two ends, on each of which the screw structure (26) is arranged.
6. Scheibenwischvorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Wischerwelle (30) und die Zahnstruktur (28) drehfest verbunden sind.6. Windscreen wiper device (10) according to one of the preceding claims, characterized in that the wiper shaft (30) and the tooth structure (28) are connected in a rotationally fixed manner.
7. Scheibenwischvorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Zahnstruktur und Wischerwelle (30) über, ein Getriebe verbunden sind.7. Windscreen wiper device (10) according to one of the preceding claims, characterized in that tooth structure and wiper shaft (30) are connected via a gear.
8. Scheibenwischvorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schneckenstrukturen (26) der Antriebswelle (24) unterschiedliche Steigungen aufweisen.8. Windshield wiper device (10) according to one of the preceding claims, characterized in that the screw structures (26) of the drive shaft (24) have different slopes.
9. Scheibenwischvorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die mit den Wischerwellen (30) drehfest verbundenen Zahnstrukturen (26) unterschiedliche Geometrien aufweisen.9. Windscreen wiper device (10) according to one of the preceding claims, characterized in that the tooth structures (26) connected in a rotationally fixed manner to the wiper shafts (30) have different geometries.
10. Scheibenwischvorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebswelle (22) im wesentlichen parallel zur10. Windshield wiper device (10) according to one of the preceding claims, characterized in that the drive shaft (22) substantially parallel to
Längserstreckung der Rohrplatine (12) angeordnet ist. Longitudinal extension of the tube plate (12) is arranged.
EP01940146A 2000-07-19 2001-04-10 Windscreen wiper system comprising a tubular bearing rod Withdrawn EP1313632A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10035039 2000-07-19
DE2000135039 DE10035039A1 (en) 2000-07-19 2000-07-19 Windshield wiper device with a tube board
PCT/DE2001/001409 WO2002006096A1 (en) 2000-07-19 2001-04-10 Windscreen wiper system comprising a tubular bearing rod

Publications (1)

Publication Number Publication Date
EP1313632A1 true EP1313632A1 (en) 2003-05-28

Family

ID=7649421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01940146A Withdrawn EP1313632A1 (en) 2000-07-19 2001-04-10 Windscreen wiper system comprising a tubular bearing rod

Country Status (3)

Country Link
EP (1) EP1313632A1 (en)
DE (1) DE10035039A1 (en)
WO (1) WO2002006096A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014312A1 (en) * 2009-03-25 2010-09-30 Valeo Systèmes d'Essuyage Electromotive auxiliary drive, in particular wiper drive
DE102010038595A1 (en) * 2010-07-29 2012-02-02 Robert Bosch Gmbh wiper device
FR2983445B1 (en) * 2011-12-06 2014-01-10 Peugeot Citroen Automobiles Sa ARRANGEMENT FOR PIVOTING A PAIR OF WIPER ARMS OF A VEHICLE
US20190337488A1 (en) * 2018-05-07 2019-11-07 Goodrich Corporation Windshield wiper system with sector gear

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329895A (en) * 1940-05-11 1943-09-21 Chrysler Corp Windshield wiper mechanism
US2785430A (en) * 1954-12-23 1957-03-19 Gen Motors Corp Windshield cleaning apparatus
US3793671A (en) * 1972-06-19 1974-02-26 Ford Motor Co Windshield cleaner assembly
DE3525215A1 (en) * 1985-07-15 1987-01-22 Saito Motors Co TURNTABLE WIPER

Non-Patent Citations (1)

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Title
See references of WO0206096A1 *

Also Published As

Publication number Publication date
DE10035039A1 (en) 2002-01-31
WO2002006096A1 (en) 2002-01-24

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