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WO2003082641A1 - Wiper drive mechanism - Google Patents

Wiper drive mechanism Download PDF

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Publication number
WO2003082641A1
WO2003082641A1 PCT/EP2003/003269 EP0303269W WO03082641A1 WO 2003082641 A1 WO2003082641 A1 WO 2003082641A1 EP 0303269 W EP0303269 W EP 0303269W WO 03082641 A1 WO03082641 A1 WO 03082641A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
mechanism according
shaft
crankpin
drive mechanism
Prior art date
Application number
PCT/EP2003/003269
Other languages
French (fr)
Inventor
Joël PRINCET
Pascal Morin
Original Assignee
Valeo Systemes D'essuyage
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 Valeo Systemes D'essuyage filed Critical Valeo Systemes D'essuyage
Priority to AU2003227551A priority Critical patent/AU2003227551A1/en
Publication of WO2003082641A1 publication Critical patent/WO2003082641A1/en

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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • B60S1/3488—Means for mounting wiper arms onto the vehicle
    • B60S1/3493—Means for mounting the wiper shaft in the wiper bearing
    • 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
    • B60S1/043—Attachment of the wiper assembly to the vehicle
    • B60S1/0436—Attachement of separate wiper shaft holders to the vehicle
    • 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
    • B60S1/0488—Wiper arrangement for crash protection or impact absorption
    • 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
    • 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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • 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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • B60S1/3488—Means for mounting wiper arms onto the vehicle
    • B60S1/3495—Means for mounting the drive mechanism to the wiper shaft

Definitions

  • the present invention relates to a wiper drive mechanism.
  • a wiper drive mechanism comprising a rotary shaft and an oscillating crank pin integral with said shaft, the rotary shaft being supported by a bearing integrated in a body.
  • this bearing is a ring of plastic material. If such a bearing is particularly suitable for supporting the rotary shaft, it must be of a certain length in order to be able to absorb the efforts in cantilever stressing this shaft during the movement of the crankpin. This length must be adjusted to obtain an acceptable clearance in cantilever movement of the shaft. In addition, this bearing length makes it possible to reduce wear at the contact areas of the shaft on the bearing when the shaft is biased in overhang.
  • the volume available in the awning cross member of motor vehicles receiving this type of mechanism is increasingly reduced.
  • the pedestrian protection constraints namely the erasure of the mechanism from 65 mm to 80 mm, will become compulsory in several countries, which is detrimental to a mechanism of great length.
  • the previous mechanisms previously described are therefore not adapted to these new constraints.
  • the invention solves this problem by proposing a reduced vertical bulk mechanism while exhibiting good performance withstand forces and better reliability.
  • the invention provides a wiper drive mechanism comprising a rotary shaft and an oscillating crankpin linked in rotation to said shaft, the rotary shaft being supported by a bearing integrated in a body, said first bearing, characterized in that said crankpin is also supported by a bearing, said second bearing.
  • the drive mechanism according to the invention separates the absorption of forces: the radial forces are absorbed by the first bearing and the axial forces by the second bearing.
  • Each bearing can thus be chosen for its appropriate intrinsic qualities, which eliminates any parasitic effort on an unsuitable bearing and increases the reliability and the service life of the mechanism.
  • the first bearing having to absorb only the radial forces, it can be of shorter length than those of the prior art. For example, it is possible to use a shorter length ring or a single ball or needle bearing instead of two distant and aligned.
  • said body comprises the first and second bearings.
  • said body is a yoke comprising an opening between two integral discs receiving the crank pin and a bore perpendicular to the opening and receiving said shaft.
  • the first bearing may consist of anti-friction rings, preferably self-lubricating, needle bearings or ball bearings.
  • the second bearing may be made up of anti-friction washers, ball thrust bearings, needle thrust bearings or body surfaces provided with ribs.
  • Figure 1 is a perspective view of a wiper drive mechanism according to the invention, according to a first embodiment.
  • Figure 2 is a vertical sectional view of this mechanism.
  • Figures 3 to 5 are detailed views of this mechanism.
  • Figure 6 is a top view of a wiper drive mechanism according to the invention, according to a second alternative embodiment.
  • Figure 7 is a vertical sectional view of this mechanism.
  • Figure 8 is a sectional view of a detail of a connection according to the invention.
  • the drive mechanism comprises a rotary shaft 1 at the end 1A of which is mounted the wiper (not shown).
  • This shaft is supported in a body 2 comprising a tab 2A for fixing to the motor vehicle, this tab being generally designed to have a rupture zone in order to allow the mechanism to be erased during an impact on the windscreen wiper. pedestrian collision.
  • a crank pin 3 which connected to a motor (not shown) is driven in an oscillating movement around the axis of the shaft 1 in order to drive the latter in rotation on an angular segment and achieve the wiper flapping.
  • crankpin 3 is connected to the shaft by a knurling 1B which ensures the rotational drive of the shaft.
  • the rotary shaft 1 is supported by a first bearing integrated in the body 2 which consists of a bore 2B receiving the shaft 1.
  • the first bearing can be in two parts (7A, 7B).
  • crankpin 3 is disposed between these two parts of the first bearing.
  • rings of anti-friction material can be interposed between the body 2 and the shaft 1, in order to improve the rotation of the shaft. However, these rings are optional, the mechanism according to the invention can be devoid of them.
  • the crank pin 3 is also supported by a second bearing integrated into the body 2.
  • This crank pin 3 comprises an end disc 3A having in its center a toothed orifice receiving the shaft 1 in order to ensure the connection between shaft and crank pin and also the axial blocking of the shaft.
  • This disc 3A is mounted in an opening 2C of the body, forming this second bearing.
  • the body is in the form of a yoke, comprising this opening 2C with two branches in the form of a 2D disc forming in cross section a U receiving by force mounting the disc 3A of the crankpin.
  • washers made of anti-friction material can be interposed between the 2D arms and the crankpin 3, in order to improve the oscillating movement of the arm.
  • the mechanism according to the invention can be devoid of them.
  • the body is made of metal, for example aluminum, zamak or magnesium and the washers and rings are made of sintered bronze or Teflon.
  • the body 2 can be composed of two parts connected together in order to facilitate the mounting of the mechanism.
  • the anti-friction rings and washers can be separate parts, be made by multi-material molding on the body or come from a treatment or coating of the body surface.
  • the sliding contact surface of the 2D branches is provided with projecting hemispheres 4, the end of which comes into contact with the crankpin 3A.
  • the sliding contact surface of the disc 3A of the crankpin has ribs 5 which are advantageously concentric as shown in front view in FIG. 5.
  • the spaces between ribs 5 constitute a reservoir for a lubricant and the outermost annular rib is continuous and provided with a shape of sealing lip to serve as a seal.
  • the other ribs 5 are not continuous in the form of blocks.
  • FIGS 6 and 7 show another alternative embodiment.
  • the elements common to the previous variant have the same reference.
  • the body 2 is here composed of two parts, connected by screwing
  • the first bearing supporting the shaft 1 consists of self-lubricating rings 7A and 7B, for example made of bronze or ferrous alloy. Needle or ball bearings can also be used.
  • the second bearing supporting the disc 3A of the crankpin consists of thrust bearings 8A and 8B provided with four-lobe or O-ring seals 9A and 9B. Needle stops can also be used.
  • the body 2 has an upper part 11 and a lower part 12, which are coupled by stamping. These two parts can in particular be made of plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The invention concerns a wiper drive mechanism comprising a rotary shaft (1) and an oscillating crank (3) linked in rotation to said shaft, the rotary shaft (1) being supported by a bearing integrated in a body (2), called first bearing. The invention is characterized in that said crank (3) is likewise supported by a bearing, called second bearing.

Description

MECANISME D'ENTRAINEMENT D'ESSUIE-GLACE WINDSCREEN WIPER DRIVE MECHANISM
La présente invention se rapporte à un mécanisme d'entraînement d'essuie-glace.The present invention relates to a wiper drive mechanism.
Elle concerne plus précisément un mécanisme d'entraînement d'essuie-glace comportant un arbre rotatif et un maneton oscillant solidaire dudit arbre, l'arbre rotatif étant supporté par un palier intégré dans un corps.It relates more precisely to a wiper drive mechanism comprising a rotary shaft and an oscillating crank pin integral with said shaft, the rotary shaft being supported by a bearing integrated in a body.
Un tel mécanisme est connu des documents de brevet WO 99/39945 et US 5 634 726.Such a mechanism is known from patent documents WO 99/39945 and US 5,634,726.
Selon cet art antérieur, ce palier est une bague de matière plastique. Si un tel palier est particulièrement adapté pour supporter l'arbre rotatif, il doit être d'une certaine longueur pour pouvoir absorber les efforts en porte- à-faux sollicitant cet arbre lors du mouvement du maneton. Cette longueur doit être ajustée pour obtenir un jeu acceptable en déplacement en porte-à- faux de l'arbre. De plus cette longueur de palier permet de réduire l'usure aux zones de contacts de l'arbre sur le palier quand l'arbre est sollicité en porte-à-faux.According to this prior art, this bearing is a ring of plastic material. If such a bearing is particularly suitable for supporting the rotary shaft, it must be of a certain length in order to be able to absorb the efforts in cantilever stressing this shaft during the movement of the crankpin. This length must be adjusted to obtain an acceptable clearance in cantilever movement of the shaft. In addition, this bearing length makes it possible to reduce wear at the contact areas of the shaft on the bearing when the shaft is biased in overhang.
Par ailleurs, le volume disponible dans la traverse d'auvent des véhicules automobiles recevant ce type de mécanisme est de plus en plus réduit. De plus, les contraintes de protection des piétons à savoir l'effacement du mécanisme de 65 mm à 80 mm deviendront obligatoires dans plusieurs pays, ce qui est préjudiciable à un mécanisme de grande longueur.Furthermore, the volume available in the awning cross member of motor vehicles receiving this type of mechanism is increasingly reduced. In addition, the pedestrian protection constraints, namely the erasure of the mechanism from 65 mm to 80 mm, will become compulsory in several countries, which is detrimental to a mechanism of great length.
Les mécanismes antérieurs précédemment décrits ne sont donc pas adaptés à ces nouvelles contraintes. L'invention résout ce problème en proposant un mécanisme d'encombrement vertical réduit tout en présentant de bonnes performances de tenue aux efforts et une meilleure fiabilité.The previous mechanisms previously described are therefore not adapted to these new constraints. The invention solves this problem by proposing a reduced vertical bulk mechanism while exhibiting good performance withstand forces and better reliability.
Pour ce faire, l'invention propose un mécanisme d'entraînement d'essuie-glace comportant un arbre rotatif et un maneton oscillant lié en rotation audit arbre, l'arbre rotatif étant supporté par un palier intégré dans un corps, dit premier palier, caractérisé en ce que ledit maneton est également supporté par un palier, dit second palier.To do this, the invention provides a wiper drive mechanism comprising a rotary shaft and an oscillating crankpin linked in rotation to said shaft, the rotary shaft being supported by a bearing integrated in a body, said first bearing, characterized in that said crankpin is also supported by a bearing, said second bearing.
Le mécanisme d'entraînement conforme à l'invention sépare l'absorption des efforts : les efforts radiaux sont absorbés par le premier palier et les efforts axiaux par le second palier. Chaque palier peut ainsi être choisi pour ses qualités intrinsèques appropriées ce qui supprime tout effort parasite sur palier non adapté et augmente la fiabilité et la durée de vie du mécanisme.The drive mechanism according to the invention separates the absorption of forces: the radial forces are absorbed by the first bearing and the axial forces by the second bearing. Each bearing can thus be chosen for its appropriate intrinsic qualities, which eliminates any parasitic effort on an unsuitable bearing and increases the reliability and the service life of the mechanism.
Le premier palier n'ayant à absorber que les efforts radiaux, il peut être de longueur inférieure à ceux de l'art antérieur. Par exemple, il est possible d'employer une bague de longueur inférieure ou un unique roulement à billes ou à aiguilles au lieu de deux distants et alignés.The first bearing having to absorb only the radial forces, it can be of shorter length than those of the prior art. For example, it is possible to use a shorter length ring or a single ball or needle bearing instead of two distant and aligned.
Selon un mode de réalisation préféré de l'invention, ledit corps comporte les premier et second paliers. Selon un mode de réalisation particulier, ledit corps est une chape comportant une ouverture entre deux disques solidaires recevant le maneton et un alésage perpendiculaire à l'ouverture et recevant ledit arbre.According to a preferred embodiment of the invention, said body comprises the first and second bearings. According to a particular embodiment, said body is a yoke comprising an opening between two integral discs receiving the crank pin and a bore perpendicular to the opening and receiving said shaft.
Le premier palier peut être constitué de bagues anti-friction, de préférence autolubrifiantes, de roulements à aiguilles ou de roulements à billes.The first bearing may consist of anti-friction rings, preferably self-lubricating, needle bearings or ball bearings.
Le second palier peut être constitué de rondelles anti-friction, de butées à billes, de butées à aiguilles ou de surfaces du corps pourvues de nervures.The second bearing may be made up of anti-friction washers, ball thrust bearings, needle thrust bearings or body surfaces provided with ribs.
L'invention est décrite ci-après plus en détail à l'aide de figures ne représentant que des modes de réalisation préférés de l'invention.The invention is described below in more detail using figures representing only preferred embodiments of the invention.
La figure 1 est une vue en perspective d'un mécanisme d'entraînement d'essuie-glace conforme à l'invention, selon une première variante de réalisation.Figure 1 is a perspective view of a wiper drive mechanism according to the invention, according to a first embodiment.
La figure 2 est une vue en coupe verticale de ce mécanisme. Les figures 3 à 5 sont des vues de détail de ce mécanisme. La figure 6 est une vue de dessus d'un mécanisme d'entraînement d'essuie-glace conforme à l'invention, selon une seconde variante de réalisation.Figure 2 is a vertical sectional view of this mechanism. Figures 3 to 5 are detailed views of this mechanism. Figure 6 is a top view of a wiper drive mechanism according to the invention, according to a second alternative embodiment.
La figure 7 est une vue en coupe verticale de ce mécanisme. La figure 8 est un vue en coupe d'un détail d'une connection conforme à l'invention.Figure 7 is a vertical sectional view of this mechanism. Figure 8 is a sectional view of a detail of a connection according to the invention.
Comme représenté sur la figure 1 selon une première variante de réalisation, le mécanisme d'entraînement comprend un arbre rotatif 1 à l'extrémité 1A duquel est monté l'essuie-glace (non représenté). Cet arbre est supporté dans un corps 2 comportant une patte 2A de fixation sur le véhicule automobile, cette patte étant généralement conçue pour présenter une zone de rupture afin de permettre l'effacement du mécanisme lors d'un choc sur l'essuie-glace en cas de collision d'un piéton. Dans ce corps 2 est également placée un maneton 3 qui relié à un moteur (non représenté) est entraîné selon un mouvement oscillant autour de l'axe de l'arbre 1 afin d'entraîner ce dernier en rotation sur un segment angulaire et réaliser le battement de l'essuie-glace. Pour ce faire, comme visible en coupe sur la figure 2, le maneton 3 est relié à l'arbre par une molletage 1B qui assure l'entraînement en rotation de l'arbre. L'arbre rotatif 1 est supporté par un premier palier intégré dans le corps 2 qui est constitué d'un alésage 2B recevant l'arbre 1. Comme représenté sur les figures, le premier palier peut être en deux parties (7A, 7B) Le maneton 3 est disposé entre ces deux parties du premier paliers. Comme représenté sur la figure 2, des bagues en matériau anti-friction peuvent être intercalées entre le corps 2 et l'arbre 1, afin d'améliorer la rotation de l'arbre. Cependant, ces bagues sont optionnelles, le mécanisme conforme à l'invention pouvant en être dépourvu.As shown in Figure 1 according to a first alternative embodiment, the drive mechanism comprises a rotary shaft 1 at the end 1A of which is mounted the wiper (not shown). This shaft is supported in a body 2 comprising a tab 2A for fixing to the motor vehicle, this tab being generally designed to have a rupture zone in order to allow the mechanism to be erased during an impact on the windscreen wiper. pedestrian collision. In this body 2 is also placed a crank pin 3 which connected to a motor (not shown) is driven in an oscillating movement around the axis of the shaft 1 in order to drive the latter in rotation on an angular segment and achieve the wiper flapping. To do this, as visible in section in Figure 2, the crankpin 3 is connected to the shaft by a knurling 1B which ensures the rotational drive of the shaft. The rotary shaft 1 is supported by a first bearing integrated in the body 2 which consists of a bore 2B receiving the shaft 1. As shown in the figures, the first bearing can be in two parts (7A, 7B). crankpin 3 is disposed between these two parts of the first bearing. As shown in Figure 2, rings of anti-friction material can be interposed between the body 2 and the shaft 1, in order to improve the rotation of the shaft. However, these rings are optional, the mechanism according to the invention can be devoid of them.
Le maneton 3 est également supporté par un second palier intégré dans le corps 2. Ce maneton 3 comporte un disque 3A d'extrémité présentant en son centre un orifice denté recevant l'arbre 1 afin d'assurer la liaison entre arbre et maneton et également le blocage axial de l'arbre. Ce disque 3A est monté dans une ouverture 2C du corps, formant ce second palier. Pour ce faire, le corps est en forme de chape, comportant cette ouverture 2C à deux branches en forme de disque 2D formant en coupe un U recevant par montage en force le disque 3A du maneton. Comme représenté sur la figure 2, des rondelles en matériau anti-friction peuvent être intercalées entre les branches 2D et le maneton 3, afin d'améliorer le déplacement oscillant du bras. Cependant, ces rondelles sont optionnelles, le mécanisme conforme à l'invention pouvant en être dépourvu. De préférence, le corps est réalisé en métal, par exemple en aluminium, zamac ou magnésium et les rondelles et bagues sont réalisées en bronze fritte ou Téflon. Représenté sur les figures 1 et 2 en une seule partie, le corps 2 peut être composé de deux parties raccordées ensemble afin de faciliter le montage du mécanisme. Les bagues et rondelles anti-friction peuvent être des pièces séparées, être réalisées par moulage multi-matières sur le corps ou provenir d'un traitement ou revêtement de la surface du corps.The crank pin 3 is also supported by a second bearing integrated into the body 2. This crank pin 3 comprises an end disc 3A having in its center a toothed orifice receiving the shaft 1 in order to ensure the connection between shaft and crank pin and also the axial blocking of the shaft. This disc 3A is mounted in an opening 2C of the body, forming this second bearing. To do this, the body is in the form of a yoke, comprising this opening 2C with two branches in the form of a 2D disc forming in cross section a U receiving by force mounting the disc 3A of the crankpin. As shown in FIG. 2, washers made of anti-friction material can be interposed between the 2D arms and the crankpin 3, in order to improve the oscillating movement of the arm. However, these washers are optional, the mechanism according to the invention can be devoid of them. Preferably, the body is made of metal, for example aluminum, zamak or magnesium and the washers and rings are made of sintered bronze or Teflon. Represented in FIGS. 1 and 2 in a single part, the body 2 can be composed of two parts connected together in order to facilitate the mounting of the mechanism. The anti-friction rings and washers can be separate parts, be made by multi-material molding on the body or come from a treatment or coating of the body surface.
Au lieu d'employer des bagues et rondelles d'anti-friction, comme représentées sur la figure 2, il est possible de réaliser par moulage sur les surfaces en contact glissant, en particulier sur les branches 2D ou le disque 3A des parties en creux comme représenté les figures 3 à 5, afin de résister aux efforts tout en réduisant le couple de frottement et limiter la charge sur le moteur et améliorer la durée de vie du mécanisme.Instead of using anti-friction rings and washers, as shown in FIG. 2, it is possible to produce hollow parts by molding on the surfaces in sliding contact, in particular on the 2D branches or the disc 3A. as shown in FIGS. 3 to 5, in order to resist the forces while reducing the friction torque and limiting the load on the motor and improving the life of the mechanism.
Selon un premier exemple représenté sur la figure 3, la surface de contact glissant des branches 2D est pourvue de demi-sphères saillantes 4 dont l'extrémité vient en contact avec le maneton 3A.According to a first example shown in FIG. 3, the sliding contact surface of the 2D branches is provided with projecting hemispheres 4, the end of which comes into contact with the crankpin 3A.
Selon un second exemple représenté sur la figure 4, la surface de contact glissant du disque 3A du maneton comporte des nervures 5 avantageusement concentriques comme représentées en vue de face sur la figure 5. Les espaces entre nervures 5 constituent un réservoir pour un lubrifiant et la nervure la plus extérieure annulaire est continue et pourvue d'une forme de lèvre d'étanchéité pour servir de joint d'étanchéité. Les autres nervures 5 sont, elles, non continues sous forme de pavés.According to a second example shown in FIG. 4, the sliding contact surface of the disc 3A of the crankpin has ribs 5 which are advantageously concentric as shown in front view in FIG. 5. The spaces between ribs 5 constitute a reservoir for a lubricant and the outermost annular rib is continuous and provided with a shape of sealing lip to serve as a seal. The other ribs 5 are not continuous in the form of blocks.
Les figures 6 et 7 représentent une autre variante de réalisation. Les éléments communs à la variante précédente portent la même référence.Figures 6 and 7 show another alternative embodiment. The elements common to the previous variant have the same reference.
Le corps 2 est ici composé de deux parties, connectées par vissageThe body 2 is here composed of two parts, connected by screwing
6A. Ces parties peuvent également être connectées par rivetage ou sertissage. Le premier palier supportant l'arbre 1 est constitué de bagues autolubrifiantes 7A et 7B, par exemple en bronze ou alliage ferreux. Des roulements à aiguilles ou à billes peuvent également être employés.6A. These parts can also be connected by riveting or crimping. The first bearing supporting the shaft 1 consists of self-lubricating rings 7A and 7B, for example made of bronze or ferrous alloy. Needle or ball bearings can also be used.
Le second palier supportant le disque 3A du maneton est constitué de butées à billes 8A et 8B pourvues de joints à quatre lobes ou toriques 9A et 9B. Des butées à aiguilles peuvent également être employées.The second bearing supporting the disc 3A of the crankpin consists of thrust bearings 8A and 8B provided with four-lobe or O-ring seals 9A and 9B. Needle stops can also be used.
Suivant un autre mode de réalisation représenté à la figure 8, le corps 2 comporte une partie supérieure 11 et une partie inférieure 12, qui sont couplées par emboutissage. Ces deux parties peuvent être notamment en plastique. According to another embodiment shown in Figure 8, the body 2 has an upper part 11 and a lower part 12, which are coupled by stamping. These two parts can in particular be made of plastic.

Claims

REVENDICATIONS
1. Mécanisme d'entraînement d'essuie-glace comportant un arbre rotatif1. Wiper drive mechanism comprising a rotating shaft
(1) et un maneton (3) oscillant relié en rotation audit arbre, l'arbre rotatif (1) étant supporté par un palier intégré dans un corps (2), dit premier palier, caractérisé en ce que ledit maneton (3) est également supporté par un palier, dit second palier.(1) and an oscillating crankpin (3) connected in rotation to said shaft, the rotary shaft (1) being supported by a bearing integrated in a body (2), said first bearing, characterized in that said crankpin (3) is also supported by a bearing, called the second bearing.
2. Mécanisme selon la revendication 1, caractérisé en ce que ledit corps2. Mechanism according to claim 1, characterized in that said body
(2) comporte les premier et second paliers.(2) has the first and second bearings.
3. Mécanisme selon la revendication 2, caractérisé en ce que ledit corps (2) est une chape comportant une ouverture (2C) entre deux disques3. Mechanism according to claim 2, characterized in that said body (2) is a yoke comprising an opening (2C) between two discs
(2D) solidaires recevant le maneton (3) et un alésage (2B) perpendiculaire à l'ouverture (2C) et recevant ledit arbre (1).(2D) integral receiving the crank pin (3) and a bore (2B) perpendicular to the opening (2C) and receiving said shaft (1).
4. Mécanisme selon la revendication 3, caractérisé en ce que ledit premier palier est constitué de bagues anti-friction, de préférence autolubrifiantes.4. Mechanism according to claim 3, characterized in that said first bearing consists of anti-friction rings, preferably self-lubricating.
5. Mécanisme selon la revendication 3, caractérisé en ce que ledit premier palier est constitué de roulements à aiguilles ou à billes.5. Mechanism according to claim 3, characterized in that said first bearing consists of needle or ball bearings.
6. Mécanisme selon la revendication 3, caractérisé en ce que ledit second palier est constitué de rondelles anti-friction. 6. Mechanism according to claim 3, characterized in that said second bearing consists of anti-friction washers.
7. Mécanisme selon la revendication 3, caractérisé en ce que ledit second palier est constitué de butées à billes ou à aiguilles. 7. Mechanism according to claim 3, characterized in that said second bearing consists of thrust bearings or needles.
8. Mécanisme selon la revendication 3, caractérisé en ce que ledit second palier est constitué de surfaces dudit corps (2) pourvues de nervures8. Mechanism according to claim 3, characterized in that said second bearing consists of surfaces of said body (2) provided with ribs
(4, 5). (4, 5).
9. Mécanisme selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps (2) comporte deux parties (11, 12), qui peuvent être couplées par emboutissage. 9. Mechanism according to any one of the preceding claims, characterized in that the body (2) comprises two parts (11, 12), which can be coupled by stamping.
10. Mécanisme selon l'une quelconque des revendications 1 - 9, caractérisé en ce que le corps (2) comporte deux parties (11, 12), qui peuvent être couplées par soudure. 10. Mechanism according to any one of claims 1 - 9, characterized in that the body (2) has two parts (11, 12), which can be coupled by welding.
11. Mécanisme selon la revendication 10, caractérisé en ce que la soudure est réalisée sous forme de points de soudure.11. Mechanism according to claim 10, characterized in that the welding is carried out in the form of welding spots.
12. Essuie-glace équipé d'un mécanisme selon l'une des revendications précédentes. 12. Wiper fitted with a mechanism according to one of the preceding claims.
PCT/EP2003/003269 2002-03-29 2003-03-28 Wiper drive mechanism WO2003082641A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227551A AU2003227551A1 (en) 2002-03-29 2003-03-28 Wiper drive mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR02/04283 2002-03-29
FR0204283A FR2837767B1 (en) 2002-03-29 2002-03-29 ICE WIPER DRIVE MECHANISM

Publications (1)

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WO2003082641A1 true WO2003082641A1 (en) 2003-10-09

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PCT/EP2003/003269 WO2003082641A1 (en) 2002-03-29 2003-03-28 Wiper drive mechanism

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FR (1) FR2837767B1 (en)
WO (1) WO2003082641A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2877299B1 (en) * 2004-11-04 2008-05-30 Renault Sas WIPER DEVICE FOR VEHICLE

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369428A2 (en) * 1988-11-16 1990-05-23 Aisin Seiki Kabushiki Kaisha A windshield wiper structure
US5067198A (en) * 1988-11-11 1991-11-26 Jidosha Denki Kogyo K.K. Wiper pivot
DE4404359A1 (en) * 1994-02-11 1995-08-17 Teves Gmbh Alfred Lever gear for wiper axle
FR2774340A1 (en) * 1998-01-30 1999-08-06 Valeo Systemes Dessuyage Windscreen wiper mechanism for automobile
DE10006412A1 (en) * 1999-02-15 2000-08-31 Asmo Co Ltd Vehicle windscreen wiper device has structure that forces second coupler to first angular region by mechanical engagement when second coupler is outside first angular region
FR2808055A1 (en) * 2000-04-21 2001-10-26 Valeo Systemes Dessuyage Bearing for drive shaft of an automotive vehicle windscreen wiper mechanism, has stop bushing which prevents undue wear of the bearing by means of a non-rotating washer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229495C1 (en) 1992-09-04 1993-11-25 Swf Auto Electric Gmbh Method for fixing a shaft in its bearing housing in wiper systems, and wiper system, in particular for cleaning the windows of a motor vehicle
DE19804135B4 (en) 1998-02-03 2011-06-30 Robert Bosch GmbH, 70469 wiper bearing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5067198A (en) * 1988-11-11 1991-11-26 Jidosha Denki Kogyo K.K. Wiper pivot
EP0369428A2 (en) * 1988-11-16 1990-05-23 Aisin Seiki Kabushiki Kaisha A windshield wiper structure
DE4404359A1 (en) * 1994-02-11 1995-08-17 Teves Gmbh Alfred Lever gear for wiper axle
FR2774340A1 (en) * 1998-01-30 1999-08-06 Valeo Systemes Dessuyage Windscreen wiper mechanism for automobile
DE10006412A1 (en) * 1999-02-15 2000-08-31 Asmo Co Ltd Vehicle windscreen wiper device has structure that forces second coupler to first angular region by mechanical engagement when second coupler is outside first angular region
FR2808055A1 (en) * 2000-04-21 2001-10-26 Valeo Systemes Dessuyage Bearing for drive shaft of an automotive vehicle windscreen wiper mechanism, has stop bushing which prevents undue wear of the bearing by means of a non-rotating washer

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FR2837767B1 (en) 2005-01-14
AU2003227551A1 (en) 2003-10-13
FR2837767A1 (en) 2003-10-03

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