WO2000039911A1 - Vehicle wiper gearmotor with reduced noise - Google Patents
Vehicle wiper gearmotor with reduced noise Download PDFInfo
- Publication number
- WO2000039911A1 WO2000039911A1 PCT/FR1999/003291 FR9903291W WO0039911A1 WO 2000039911 A1 WO2000039911 A1 WO 2000039911A1 FR 9903291 W FR9903291 W FR 9903291W WO 0039911 A1 WO0039911 A1 WO 0039911A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stop
- shaft
- motor according
- geared motor
- casing
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/081—Structural association with bearings specially adapted for worm gear drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
Definitions
- the invention relates to wiper motor reducers for motor vehicles.
- wiper gearmotors include a motor with a shaft extending through the reducer.
- the reducer comprises at least one element such as a pinion meshing with a screw formed on the shaft, the movement of the pinion being transmitted to an output shaft of the gearmotor connected to the wiper blade.
- the gearmotors are often noisy in operation, in particular when the direction of movement of the brush, called turning, is changed. The noise is due in particular to the axial play of the input shaft. However, this game is necessary for mounting and operating reasons.
- An object of the invention is to provide a geared motor generating less noise.
- a wiping gear motor for a vehicle comprising a motor comprising a shaft and a reduction gear comprising an element engaged with the shaft, the gear motor comprising a casing, the gear motor comprising a stop forming a spring bearing along an axis of the shaft on the one hand against the shaft and on the other hand against the casing.
- the gear motor may also have one or more of the following characteristics: - the stopper is made of folded sheet; - The stop has an orifice engaged on a part of the casing;
- the housing includes at least one shim preventing rotation of the stop around the orifice; - the stop extends in the reducer;
- the stop is in abutment against an axial end of the shaft
- the stopper is fixed to a housing cover
- the stopper is partly embedded in a material of the casing
- the geared motor comprises a retaining ring for a guide ring of an output shaft of the geared motor, the retaining ring being in one piece with the stop.
- the insert will also form the retaining ring.
- the insert forms at least one tab defining a connector and / or a fixed stop device.
- the insert forms at least two legs and the legs are separated before or after molding.
- FIG. 1 is a partial perspective view in section of a geared motor according to a first preferred embodiment of the invention
- - Figure 2 is a sectional view of a detail of the gearmotor of Figure 1;
- FIG. 3 is a perspective view of the stop only of the geared motor of Figure 1;
- - Figure 4 is a partial perspective view of a gearmotor according to a second preferred embodiment;
- FIG. 5 is a view of the insert of Figure 4 before forming and cutting.
- a first preferred embodiment of the wiper motor reducer 2 for a motor vehicle according to the invention. It comprises a motor 4, comprising in particular a manifold 6 and a shaft 7 having on a part of the shaft extending in the reduction gear 10 two threads 8 oriented in opposite directions.
- the gearmotor comprises a reduction gear comprising two pinions not illustrated meshing with the respective threads 8 of the shaft and secured to two respective wheels driving in rotation an output shaft of the gearmotor.
- the geared motor comprises a casing surrounding the motor 4 and the reducer 10. In the reducer, the casing comprises a base not shown and a plate 12 for closing the base. Such characteristics are known per se.
- the geared motor comprises a stop forming a spring 14. It has a zone forming a spring 16 in the shape of a "U” and a fixing zone 18 of flat shape, extending one end of one of the branches of the "U", perpendicular to it. this.
- the fixing zone 18 has a circular central orifice 20.
- the stop 14 When the gearmotor is mounted, the stop 14 is fixed to an internal face 21 of the closure plate 12. For this, a stud or stud 22 is provided on this internal face and the orifice 20 is threaded thereon. Then, the stud 22 is crushed on the fixing zone 18 to immobilize the stop 14 relative to the closure plate 12. This fixing can also be carried out by snap-fastening. Immobilization through the orifice 20, in general, does not completely immobilize the stop 14 in rotation around the orifice. This is why there is also provided at least one stop or anti-rotation block 24, here two in number, extending on either side of the zone forming spring 16 and in contact with the latter. Only one of these shims 24 has been illustrated here. The stop forming a spring 14 is thus rigidly immobilized with respect to the closure plate 12.
- this piece contact 26 Is fixed at the free axial end of the shaft 7 extending in the reducer a contact piece 26 intended to ensure the contact of the shaft 7 with the stop forming a spring 14.
- the shaft being made of metal, this piece contact 26 will for example be made of plastic.
- the contact area 16 When mounting the closure plate 12 on the housing, the contact area 16 abuts against the contact piece 26. By spring effect, it urges the shaft 7 along its axis 28 towards the motor, without however prohibiting its axial play, so that it can deform under the effect of a significant axial stress on the shaft on the zone forming a spring, thus allowing the displacement of the shaft along its axis in the direction of the reducer. The tree returns to its starting position when this stress ceases.
- the stop forming a spring 14 is here in folded sheet. It is separated from other metal parts of the gearmotor.
- the geared motor comprises, in a manner known per se, a bearing or guide ring 30 of plastic material of cylindrical shape and intended to receive the output shaft for its guidance.
- the gearmotor further comprises a cylindrical metallic retaining ring 32 intended to receive the guide ring 30 for retaining it.
- the retaining ring 32 is here in one piece with the stopper 14 and is connected to the latter by a connection part 34 embedded in the plastic material of the closure plate 12.
- the connection part 34 joins the stopper forming spring 14 at the level of the fixing zone 18, which here does not need to have a fixing orifice 20.
- the connecting part 34 is substantially planar.
- the geared motor comprises in a manner known per se a wheel 36 or cam integral with the output shaft and carrying metal tracks 38. It also includes three metal blades 40 rubbing on the wheel 36 and capable of coming into electrical contact with these tracks.
- the tracks 38 and the blades 40 form a fixed stop device, the principle of which is known per se.
- the gearmotor has three terminals 42 for connection to an electrical harness of the vehicle. Each terminal 42 is in one piece with one of the blades 40 in the gearmotor under conditions of use.
- FIG. 5 shows the flank or insert 35 flat constituting them originally from a cut sheet
- FIG. 4 shows the flank 35 after folding and before cutting.
- the gearmotor starting from the insert 35 of FIG. 5, the stop forming a spring 14 is formed, and the retaining ring 32.
- the latter is originally shaped as a flat band whose ends respectively carry male and female reliefs 44.
- the strip is conformed into a cylinder and the reliefs 44 are coupled to keep the shape in cylinder.
- the tracks 40 are formed by tilting them relative to the connecting part 34.
- the connection terminals 42 are formed, initially in the form of a "T", by winding their ends and by straightening the terminals.
- the sidewall 35 thus formed is then inserted into the mold intended to form the closing plate 12.
- the mold is for example adapted in a manner known per se so that the closing of the mold cuts the portions 46 of the connecting part 34 adjacent to the terminals 42 and tracks 40 and connecting them to each other at the origin. This operation is called deshuntage. However, preferably, the deshuntage will take place after molding.
- the ends of the tracks 40 and of the terminals 42 adjacent to these portions 46 are embedded in the plastic, as well as the connecting part 34 and the retaining ring 32.
- the guide ring 30 is then inserted into the latter.
- the stop 14 fulfills the same role as in the previous mode.
- the assembly of the gearmotor is simplified and the number of parts is reduced.
- the overall cost of the gearmotor is lowered and parasitic emissions are reduced.
- the insert 35 may be overmolded with a part of the base other than the closure plate 12.
- the characteristics relating to the overmolded insert 35 and / or to the retaining ring 32 can be implemented independently of those relating to the stop forming a spring 14.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention concerns a vehicle wiper gearmotor comprising a motor (4) including a shaft (7) and a gearmotor (10) containing an element engaged with the shaft, the gearmotor including a crankcase (12). The gearmotor comprises a stop forming a spring (14) pressed, along an axis of the shaft (7), against the shaft and against the crankcase (12).
Description
"MOTOREDUCTEUR D'ESSUYAGE POUR VEHICULE, A BRUIT REDUIT" . L'invention concerne les motoréducteurs d' essuie- glace pour véhicule automobile. "WIPER GEAR FOR VEHICLE, WITH REDUCED NOISE". The invention relates to wiper motor reducers for motor vehicles.
De nombreux motoréducteurs d' essuie-glace comprennent un moteur dont un arbre s'étend dans le réducteur. Le réducteur comprend au moins un élément tel qu'un pignon engrenant avec une vis formée sur l'arbre, le mouvement du pignon étant transmis à un arbre de sortie du motoréducteur relié au balai d' essuie-glace. Or, on constate que les motoréducteurs sont souvent bruyants en fonctionnement, notamment lors du changement de sens de déplacement du balai appelé retournement. Le bruit est dû notamment au jeu axial de l'arbre d'entrée. Or, ce jeu est nécessaire pour des raisons de montage et de fonctionnement. Un but de l'invention est de fournir un motoréducteur générant moins de bruit.Many wiper gearmotors include a motor with a shaft extending through the reducer. The reducer comprises at least one element such as a pinion meshing with a screw formed on the shaft, the movement of the pinion being transmitted to an output shaft of the gearmotor connected to the wiper blade. However, it can be seen that the gearmotors are often noisy in operation, in particular when the direction of movement of the brush, called turning, is changed. The noise is due in particular to the axial play of the input shaft. However, this game is necessary for mounting and operating reasons. An object of the invention is to provide a geared motor generating less noise.
En vue de la réalisation de ce but, on prévoit selon l'invention un motoréducteur d'essuyage pour véhicule, comprenant un moteur comportant un arbre et un réducteur comportant un élément en prise avec l'arbre, le motoréducteur comportant un carter, le motoréducteur comprenant une butée formant ressort en appui suivant un axe de l'arbre d'une part contre l'arbre et d'autre part contre le carter. Ainsi, la butée formant ressort permet de rattraper le jeu axial de l'arbre d'entrée sans menacer l'existence de ce jeu. Le bruit est donc réduit, notamment au retournement .In order to achieve this goal, there is provided according to the invention a wiping gear motor for a vehicle, comprising a motor comprising a shaft and a reduction gear comprising an element engaged with the shaft, the gear motor comprising a casing, the gear motor comprising a stop forming a spring bearing along an axis of the shaft on the one hand against the shaft and on the other hand against the casing. Thus, the stop forming a spring makes it possible to make up for the axial play of the input shaft without threatening the existence of this play. The noise is therefore reduced, in particular on overturning.
Le motoréducteur pourra en outre présenter une ou plusieurs des caractéristiques suivantes : - la butée est réalisée en tôle pliée ;
- la butée présente un orifice engagé sur une partie du carter ;The gear motor may also have one or more of the following characteristics: - the stopper is made of folded sheet; - The stop has an orifice engaged on a part of the casing;
- le carter comprend au moins une cale interdisant une rotation de la butée autour de l'orifice ; - la butée s'étend dans le réducteur ;- The housing includes at least one shim preventing rotation of the stop around the orifice; - the stop extends in the reducer;
- la butée est en appui contre une extrémité axiale de l'arbre ;- The stop is in abutment against an axial end of the shaft;
- la butée est fixée à un couvercle du carter ;- the stopper is fixed to a housing cover;
- la butée est en partie noyée dans une matière du carter ;- the stopper is partly embedded in a material of the casing;
- le motoréducteur comprend une bague de maintien d'une bague de guidage d'un arbre de sortie du motoréducteur, la bague de maintien étant d'une seule pièce avec la butée. On prévoit en outre selon l'invention un procédé de fabrication d'un motoréducteur selon l'invention, dans lequel :- The geared motor comprises a retaining ring for a guide ring of an output shaft of the geared motor, the retaining ring being in one piece with the stop. A method of manufacturing a geared motor according to the invention is further provided according to the invention, in which:
- on fournit un insert formant la butée ; et- an insert is provided forming the stop; and
- on surmoule un élément du carter sur l' insert. Avantageusement, l' insert formera également la bague de maintien.- an element of the casing is overmolded on the insert. Advantageously, the insert will also form the retaining ring.
Avantageusement, l' insert forme au moins une patte définissant un connecteur et/ou un dispositif d'arrêt fixe. Avantageusement, l' insert forme au moins deux pattes et on sépare les pattes avant ou après moulage.Advantageously, the insert forms at least one tab defining a connector and / or a fixed stop device. Advantageously, the insert forms at least two legs and the legs are separated before or after molding.
D'autres caractéristiques et avantages de l'invention apparaîtront encore dans la description suivante de deux modes préférés de réalisation donnés à titre d'exemples non limitatifs. Aux dessins annexés :Other characteristics and advantages of the invention will appear in the following description of two preferred embodiments given by way of nonlimiting examples. In the accompanying drawings:
- la figure 1 est une vue partielle en perspective et en coupe d'un motoréducteur selon un premier mode préféré de réalisation de l'invention ;
- la figure 2 est une vue en coupe d'un détail du motoréducteur de la figure 1 ;- Figure 1 is a partial perspective view in section of a geared motor according to a first preferred embodiment of the invention; - Figure 2 is a sectional view of a detail of the gearmotor of Figure 1;
- la figure 3 est une vue en perspective de la butée seule du motoréducteur de la figure 1 ; - la figure 4 est une vue partielle en perspective d'un motoréducteur selon un deuxième mode préféré de réalisation ; et- Figure 3 is a perspective view of the stop only of the geared motor of Figure 1; - Figure 4 is a partial perspective view of a gearmotor according to a second preferred embodiment; and
- la figure 5 est une vue de l' insert de la figure 4 avant formage et coupe. On a illustré aux figures 1 à 3 un premier mode préféré de réalisation du motoréducteur d' essuie-glace 2 pour véhicule automobile selon l'invention. Il comprend un moteur 4, comprenant notamment un collecteur 6 et un arbre 7 présentant sur une partie d'arbre s' étendant dans le réducteur 10 deux filets 8 orientés en sens inverses. Le motoréducteur comporte un réducteur comprenant deux pignons non illustrés engrenant avec les filets respectifs 8 de l'arbre et solidaires de deux roues respectives entraînant à rotation un arbre de sortie du motoréducteur. Le motoréducteur comporte un carter entourant le moteur 4 et le réducteur 10. Dans le réducteur, le carter comprend un socle non illustré et une plaque 12 de fermeture du socle. De telles caractéristiques sont connues en soi. Le motoréducteur comprend une butée formant ressort 14. Elle présente une zone formant ressort 16 en forme de « U » et une zone de fixation 18 de forme plate, prolongeant une extrémité de l'une des branches du « U », perpendiculairement à celle-ci. La zone de fixation 18 présente un orifice central circulaire 20.- Figure 5 is a view of the insert of Figure 4 before forming and cutting. There is illustrated in Figures 1 to 3 a first preferred embodiment of the wiper motor reducer 2 for a motor vehicle according to the invention. It comprises a motor 4, comprising in particular a manifold 6 and a shaft 7 having on a part of the shaft extending in the reduction gear 10 two threads 8 oriented in opposite directions. The gearmotor comprises a reduction gear comprising two pinions not illustrated meshing with the respective threads 8 of the shaft and secured to two respective wheels driving in rotation an output shaft of the gearmotor. The geared motor comprises a casing surrounding the motor 4 and the reducer 10. In the reducer, the casing comprises a base not shown and a plate 12 for closing the base. Such characteristics are known per se. The geared motor comprises a stop forming a spring 14. It has a zone forming a spring 16 in the shape of a "U" and a fixing zone 18 of flat shape, extending one end of one of the branches of the "U", perpendicular to it. this. The fixing zone 18 has a circular central orifice 20.
Au montage du motoréducteur, on fixe la butée 14 à une face interne 21 de la plaque de fermeture 12. Pour cela, on prévoit un plot ou téton 22 sur cette face interne et on enfile l'orifice 20 sur celui-ci. Ensuite,
on écrase le plot 22 sur la zone de fixation 18 pour immobiliser la butée 14 par rapport à la plaque de fermeture 12. On peut aussi réaliser cette fixation par bouterollage. L'immobilisation par l'orifice 20, en général, n'immobilise pas totalement la butée 14 à rotation autour de l'orifice. C'est pourquoi on prévoit en outre au moins une butée ou cale antirotation 24, ici au nombre de deux, s' étendant de part et d'autre de la zone formant ressort 16 et en contact avec celle-ci. Seule l'une de ces cales 24 a été illustrée ici. La butée formant ressort 14 est ainsi rigidement immobilisée par rapport à la plaque de fermeture 12.When the gearmotor is mounted, the stop 14 is fixed to an internal face 21 of the closure plate 12. For this, a stud or stud 22 is provided on this internal face and the orifice 20 is threaded thereon. Then, the stud 22 is crushed on the fixing zone 18 to immobilize the stop 14 relative to the closure plate 12. This fixing can also be carried out by snap-fastening. Immobilization through the orifice 20, in general, does not completely immobilize the stop 14 in rotation around the orifice. This is why there is also provided at least one stop or anti-rotation block 24, here two in number, extending on either side of the zone forming spring 16 and in contact with the latter. Only one of these shims 24 has been illustrated here. The stop forming a spring 14 is thus rigidly immobilized with respect to the closure plate 12.
On fixe à l'extrémité axiale libre de l'arbre 7 s' étendant dans le réducteur une pièce de contact 26 destinée à assurer le contact de l'arbre 7 avec la butée formant ressort 14. L'arbre étant en métal, cette pièce de contact 26 sera par exemple en matière plastique.Is fixed at the free axial end of the shaft 7 extending in the reducer a contact piece 26 intended to ensure the contact of the shaft 7 with the stop forming a spring 14. The shaft being made of metal, this piece contact 26 will for example be made of plastic.
Lors du montage de la plaque de fermeture 12 sur le carter, la zone de contact 16 vient en butée contre la pièce de contact 26. Par effet ressort, elle sollicite l'arbre 7 suivant son axe 28 en direction du moteur, sans toutefois interdire son jeu axial, de sorte qu'elle peut se déformer sous l'effet d'une importante sollicitation axiale de l'arbre sur la zone formant ressort permettant ainsi le déplacement de l'arbre suivant son axe en direction du réducteur. L'arbre reprend sa position de départ lorsque cesse cette sollicitation.When mounting the closure plate 12 on the housing, the contact area 16 abuts against the contact piece 26. By spring effect, it urges the shaft 7 along its axis 28 towards the motor, without however prohibiting its axial play, so that it can deform under the effect of a significant axial stress on the shaft on the zone forming a spring, thus allowing the displacement of the shaft along its axis in the direction of the reducer. The tree returns to its starting position when this stress ceases.
La butée formant ressort 14 est ici en tôle pliée. Elle est séparée d'autres parties métalliques du motoréducteur .The stop forming a spring 14 is here in folded sheet. It is separated from other metal parts of the gearmotor.
On va maintenant décrire un deuxième mode préféré de réalisation en référence aux figures 4 et 5.
En référence à la figure 4, le motoréducteur comprend de façon connue en soi un coussinet ou bague de guidage 30 en matière plastique de forme cylindrique et destiné à recevoir l'arbre de sortie pour son guidage. Le motoréducteur comprend en outre une bague de maintien métallique cylindrique 32 destinée à recevoir la bague de guidage 30 pour son maintien. La bague de maintien 32 est ici d'une seule pièce avec la butée 14 et est reliée à celle-ci par une partie de liaison 34 noyée dans la matière plastique de la plaque de fermeture 12. La partie de liaison 34 rejoint la butée formant ressort 14 au niveau de la zone de fixation 18, laquelle n'a pas besoin ici de présenter un orifice de fixation 20. La partie de liaison 34 est sensiblement plane. Le motoréducteur comprend de façon connue en soi une roue 36 ou came solidaire de l'arbre de sortie et portant des pistes métalliques 38. Il comprend aussi trois lames métalliques 40 frottant sur la roue 36 et aptes à venir en contact électrique avec ces pistes. Les pistes 38 et les lames 40 forment un dispositif d'arrêt fixe dont le principe est connu en soi. Le motoréducteur comporte trois bornes 42 de connexion à un faisceau électrique du véhicule. Chaque borne 42 est d'une seule pièce avec l'une des lames 40 dans le motoréducteur en conditions d'utilisation.We will now describe a second preferred embodiment with reference to FIGS. 4 and 5. With reference to FIG. 4, the geared motor comprises, in a manner known per se, a bearing or guide ring 30 of plastic material of cylindrical shape and intended to receive the output shaft for its guidance. The gearmotor further comprises a cylindrical metallic retaining ring 32 intended to receive the guide ring 30 for retaining it. The retaining ring 32 is here in one piece with the stopper 14 and is connected to the latter by a connection part 34 embedded in the plastic material of the closure plate 12. The connection part 34 joins the stopper forming spring 14 at the level of the fixing zone 18, which here does not need to have a fixing orifice 20. The connecting part 34 is substantially planar. The geared motor comprises in a manner known per se a wheel 36 or cam integral with the output shaft and carrying metal tracks 38. It also includes three metal blades 40 rubbing on the wheel 36 and capable of coming into electrical contact with these tracks. The tracks 38 and the blades 40 form a fixed stop device, the principle of which is known per se. The gearmotor has three terminals 42 for connection to an electrical harness of the vehicle. Each terminal 42 is in one piece with one of the blades 40 in the gearmotor under conditions of use.
Au cours de la fabrication, les trois lames 40 et les trois bornes 42 sont toutes d'une seule pièce avec la bague de maintien 32 et la butée ressort 14. La partie de liaison 34 se prolonge jusqu'à la base des pistes 40 et des bornes 42. La figure 5 montre à plat le flanc ou insert 35 les constituant à l'origine à partir d'une tôle découpée, et la figure 4 montre le flanc 35 après pliage et avant coupe.
Pour fabriquer le motoréducteur, à partir de l' insert 35 de la figure 5, on forme la butée formant ressort 14, et la bague de maintien 32. Cette dernière est conformée à l'origine en une bande plane dont les extrémités portent respectivement des reliefs mâle et femelle 44. Pour former la bague, on conforme la bande en un cylindre et on accouple les reliefs 44 pour garder la forme en cylindre. On forme les pistes 40 en les inclinant par rapport à la partie de liaison 34. On forme les bornes de connexion 42, initialement en forme de « T », en enroulant leurs extrémités et en redressant les bornes.During manufacture, the three blades 40 and the three terminals 42 are all in one piece with the retaining ring 32 and the spring stop 14. The connecting part 34 extends to the base of the tracks 40 and terminals 42. FIG. 5 shows the flank or insert 35 flat constituting them originally from a cut sheet, and FIG. 4 shows the flank 35 after folding and before cutting. To manufacture the gearmotor, starting from the insert 35 of FIG. 5, the stop forming a spring 14 is formed, and the retaining ring 32. The latter is originally shaped as a flat band whose ends respectively carry male and female reliefs 44. To form the ring, the strip is conformed into a cylinder and the reliefs 44 are coupled to keep the shape in cylinder. The tracks 40 are formed by tilting them relative to the connecting part 34. The connection terminals 42 are formed, initially in the form of a "T", by winding their ends and by straightening the terminals.
On insère ensuite le flanc 35 ainsi formé dans le moule visant à former la plaque de fermeture 12. Le moule est par exemple adapté de façon connue en soi de sorte que la fermeture du moule coupe les portions 46 de la partie de liaison 34 adjacentes aux bornes 42 et aux pistes 40 et les reliant entre elles à l'origine. Cette opération est appelée deshuntage. Toutefois, de façon préférée, le deshuntage aura lieu après moulage. Lors du surmoulage, les extrémités des pistes 40 et des bornes 42 adjacentes à ces portions 46 sont noyées dans la matière plastique, ainsi que la partie de liaison 34 et la bague de maintien 32. On insère ensuite dans cette dernière la bague de guidage 30. La butée 14 remplit le même rôle que dans le précédent mode.The sidewall 35 thus formed is then inserted into the mold intended to form the closing plate 12. The mold is for example adapted in a manner known per se so that the closing of the mold cuts the portions 46 of the connecting part 34 adjacent to the terminals 42 and tracks 40 and connecting them to each other at the origin. This operation is called deshuntage. However, preferably, the deshuntage will take place after molding. During overmolding, the ends of the tracks 40 and of the terminals 42 adjacent to these portions 46 are embedded in the plastic, as well as the connecting part 34 and the retaining ring 32. The guide ring 30 is then inserted into the latter. The stop 14 fulfills the same role as in the previous mode.
Ainsi, on rassemble sur un même insert différentes fonctions électriques, mécaniques et/ou thermiques.Thus, various electrical, mechanical and / or thermal functions are brought together on the same insert.
Le montage du motoréducteur est simplifié et le nombre de pièces est réduit. Le coût global du motoréducteur est abaissé et on réduit les émissions parasites.The assembly of the gearmotor is simplified and the number of parts is reduced. The overall cost of the gearmotor is lowered and parasitic emissions are reduced.
L' insert 35 pourra être surmoulé avec une partie du socle autre que la plaque de fermeture 12.
On pourra mettre en oeuvre les caractéristiques relatives à l' insert surmoulé 35 et/ou à la bague de maintien 32 indépendamment de celles relatives à la butée formant ressort 14.
The insert 35 may be overmolded with a part of the base other than the closure plate 12. The characteristics relating to the overmolded insert 35 and / or to the retaining ring 32 can be implemented independently of those relating to the stop forming a spring 14.
Claims
1. Motoréducteur d'essuyage pour véhicule, comprenant un moteur (4) comportant un arbre (7) et un réducteur (10) comportant un élément en prise avec l'arbre, le motoréducteur comportant un carter (12), caractérisé en ce qu'il comprend une butée formant ressort (14) en appui suivant un axe (28) de l'arbre (7) d'une part contre l'arbre (7) et d'autre part contre le carter (12) .1. Wiping gearmotor for a vehicle, comprising a motor (4) comprising a shaft (7) and a reduction gear (10) comprising an element engaged with the shaft, the geared motor comprising a casing (12), characterized in that 'It comprises a stop forming a spring (14) bearing along an axis (28) of the shaft (7) on the one hand against the shaft (7) and on the other hand against the casing (12).
2. Motoréducteur selon la revendication 1, caractérisé en ce que la butée (14) est réalisée en tôle pliée.2. Geared motor according to claim 1, characterized in that the stop (14) is made of folded sheet.
3. Motoréducteur selon la revendication 1 ou 2, caractérisé en ce que la butée (14) présente un orifice3. Geared motor according to claim 1 or 2, characterized in that the stop (14) has an orifice
(20) engagé sur une partie (22) du carter.(20) engaged on a part (22) of the casing.
4. Motoréducteur selon la revendication 3, caractérisé en ce que le carter comprend au moins une cale (24) interdisant une rotation de la butée (14) autour de l'orifice (20).4. Gear motor according to claim 3, characterized in that the casing comprises at least one shim (24) preventing rotation of the stop (14) around the orifice (20).
5. Motoréducteur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la butée (14) s'étend dans le réducteur (10).5. Gear motor according to any one of claims 1 to 4, characterized in that the stop (14) extends in the reducer (10).
6. Motoréducteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la butée6. Gear motor according to any one of claims 1 to 5, characterized in that the stop
(14) est en appui contre une extrémité axiale (26) de 1' arbre (7) .(14) bears against an axial end (26) of the shaft (7).
7. Motoréducteur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la butée (14) est fixée à un couvercle (12) du carter.7. Geared motor according to any one of claims 1 to 6, characterized in that the stop (14) is fixed to a cover (12) of the casing.
8. Motoréducteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la butée (14) est en partie noyée dans une matière du carter. 8. Gear motor according to any one of claims 1 to 7, characterized in that the stop (14) is partly embedded in a material of the housing.
9. Motoréducteur selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il comprend une bague de maintien (32) d'une bague de guidage (30) d'un arbre de sortie du motoréducteur, la bague de maintien étant d'une seule pièce avec la butée (14) .9. Geared motor according to any one of claims 1 to 8, characterized in that it comprises a retaining ring (32) of a guide ring (30) of an output shaft of the geared motor, the retaining ring being in one piece with the stop (14).
10. Procédé de fabrication d'un motoréducteur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que :10. Method for manufacturing a geared motor according to any one of claims 1 to 9, characterized in that:
- on fournit un insert (35) formant la butée (14) ; et - on surmoule un élément (12) du carter sur l' insert (35) .- Providing an insert (35) forming the stop (14); and - an element (12) of the casing is overmolded on the insert (35).
11. Procédé selon la revendication 10 pour fabriquer un motoréducteur selon la revendication 9, caractérisé en ce que l' insert (35) forme la bague de maintien (32) .11. Method according to claim 10 for manufacturing a geared motor according to claim 9, characterized in that the insert (35) forms the retaining ring (32).
12. Procédé selon la revendication 10 ou 11, caractérisé en ce que l' insert (35) forme au moins une patte (40, 42) définissant un connecteur et/ou un dispositif d'arrêt fixe. 12. Method according to claim 10 or 11, characterized in that the insert (35) forms at least one lug (40, 42) defining a connector and / or a fixed stop device.
13. Procédé selon la revendication 12, caractérisé en ce que l' insert (35) forme au moins deux pattes (40, 42) et on sépare les pattes avant ou après moulage. 13. Method according to claim 12, characterized in that the insert (35) forms at least two legs (40, 42) and the legs are separated before or after molding.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/16493 | 1998-12-28 | ||
FR9816493A FR2787944B1 (en) | 1998-12-28 | 1998-12-28 | VEHICLE WIPING MOTOR, REDUCED NOISE |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000039911A1 true WO2000039911A1 (en) | 2000-07-06 |
Family
ID=9534550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/003291 WO2000039911A1 (en) | 1998-12-28 | 1999-12-27 | Vehicle wiper gearmotor with reduced noise |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2787944B1 (en) |
WO (1) | WO2000039911A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006052958B4 (en) | 2005-11-11 | 2023-02-09 | Johnson Electric International AG | Electric motor with rotor shaft |
CN109956036A (en) * | 2017-12-25 | 2019-07-02 | 广州极飞科技有限公司 | Driving device, flusher and unmanned plane |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1415584A (en) * | 1964-07-20 | 1965-10-29 | Ford France | Bearing |
US3549218A (en) * | 1969-05-02 | 1970-12-22 | Ford Motor Co | End thrust control device for a rotating shaft |
DE4137607A1 (en) * | 1990-11-16 | 1992-05-21 | Mabuchi Motor Co | DEVICE FOR POSITIONING A MOTOR OUTPUT SHAFT |
DE4123785A1 (en) * | 1991-07-18 | 1993-01-21 | Swf Auto Electric Gmbh | ELECTRIC MOTOR, INSBES. FOR A WINDOW WIPER SYSTEM OF A MOTOR VEHICLE |
DE19548867A1 (en) * | 1995-06-29 | 1997-01-09 | Teves Gmbh Alfred | Housing for a gear |
GB2317504A (en) * | 1996-09-19 | 1998-03-25 | Acdtridon Europ Ltd | Motor bearing thrust arrangement |
US5770907A (en) * | 1995-08-14 | 1998-06-23 | Itt Automotive Electrical Systems, Inc. | Windshield wiper motor for use in a vehicle and method for manufacturing |
DE19727119C1 (en) * | 1997-06-26 | 1998-07-16 | Bosch Gmbh Robert | Electric drive unit esp for motor vehicle windscreen wipers |
-
1998
- 1998-12-28 FR FR9816493A patent/FR2787944B1/en not_active Expired - Fee Related
-
1999
- 1999-12-27 WO PCT/FR1999/003291 patent/WO2000039911A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1415584A (en) * | 1964-07-20 | 1965-10-29 | Ford France | Bearing |
US3549218A (en) * | 1969-05-02 | 1970-12-22 | Ford Motor Co | End thrust control device for a rotating shaft |
DE4137607A1 (en) * | 1990-11-16 | 1992-05-21 | Mabuchi Motor Co | DEVICE FOR POSITIONING A MOTOR OUTPUT SHAFT |
DE4123785A1 (en) * | 1991-07-18 | 1993-01-21 | Swf Auto Electric Gmbh | ELECTRIC MOTOR, INSBES. FOR A WINDOW WIPER SYSTEM OF A MOTOR VEHICLE |
DE19548867A1 (en) * | 1995-06-29 | 1997-01-09 | Teves Gmbh Alfred | Housing for a gear |
US5770907A (en) * | 1995-08-14 | 1998-06-23 | Itt Automotive Electrical Systems, Inc. | Windshield wiper motor for use in a vehicle and method for manufacturing |
GB2317504A (en) * | 1996-09-19 | 1998-03-25 | Acdtridon Europ Ltd | Motor bearing thrust arrangement |
DE19727119C1 (en) * | 1997-06-26 | 1998-07-16 | Bosch Gmbh Robert | Electric drive unit esp for motor vehicle windscreen wipers |
Also Published As
Publication number | Publication date |
---|---|
FR2787944B1 (en) | 2001-03-23 |
FR2787944A1 (en) | 2000-06-30 |
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