FR2691656A1 - Vehicle windscreen wiper arm manufacturing procedure - uses aluminium alloy insert which is placed in mould before casting arm to fit onto drive spindle - Google Patents

Vehicle windscreen wiper arm manufacturing procedure - uses aluminium alloy insert which is placed in mould before casting arm to fit onto drive spindle Download PDF

Info

Publication number
FR2691656A1
FR2691656A1 FR9206411A FR9206411A FR2691656A1 FR 2691656 A1 FR2691656 A1 FR 2691656A1 FR 9206411 A FR9206411 A FR 9206411A FR 9206411 A FR9206411 A FR 9206411A FR 2691656 A1 FR2691656 A1 FR 2691656A1
Authority
FR
France
Prior art keywords
insert
arm
aluminium alloy
drive spindle
alloy
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.)
Granted
Application number
FR9206411A
Other languages
French (fr)
Other versions
FR2691656B1 (en
Inventor
Ortiz Michel
Legal Joel
Monteil Pascal
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Priority to FR9206411A priority Critical patent/FR2691656B1/en
Publication of FR2691656A1 publication Critical patent/FR2691656A1/en
Application granted granted Critical
Publication of FR2691656B1 publication Critical patent/FR2691656B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • B60S1/3425—Constructional aspects of the arm
    • B60S1/3445—Joints between elements
    • B60S1/3459—Joints between elements the element being a mounting head and a shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • 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
    • B60S1/3425—Constructional aspects of the arm
    • B60S1/3436—Mounting heads
    • B60S1/3438—Manufacturing details thereof

Abstract

The procedure consists of placing an insert (7) in the mould before injecting the alloy used to make the arm. The insert is mounted on a hub with a diameter equivalent to that of the drive spindle (3). The insert (7) is of aluminium alloy, and the wiper arm is cast from a zinc alloy, using a mould which can cast a number of arms at one time. The aperture (2) in the insert has a ribbed inner surface to engage with a similar surface on the outside of the spindle. ADVANTAGE - Allows existing types of mould to be used to make wiper arms which have greater resistance to stresses.

Description

PROCEDE DE REALISATION D'UN BRAS SUPPORT.PROCESS FOR PRODUCING A SUPPORT ARM.

NOTAMMENT POUR PORTE BALAI DESSUIE VrrRE
L'invention concerne un procédé de réalisation d'un bras support, notamment pour porte balai d'essuie-vitre, qui comporte un logement de montage d'un axe muni d'une denture extérieure.ESPECIALLY FOR BRUSH HOLDER DESSUIE VrrRE
The invention relates to a method for producing a support arm, in particular for a wiper blade holder, which comprises a housing for mounting an axis provided with external teeth.

La publication FR-A-2124865 décrit un bras support de porte-balai muni d'un perçage de montage d'un axe qui comporte une denture extérieure d'entraînement dudit bras et une partie filetée recevant un écrou de fixation qui garantit la tension et le positionnement du bras sur son axe.The publication FR-A-2124865 describes a brush holder support arm provided with a mounting hole for an axis which has an external toothing for driving said arm and a threaded part receiving a fixing nut which guarantees the tension and the positioning of the arm on its axis.

Lorsque le matériau constitutif du bras est par exemple un alliage de zinc plus connu sous la référence ZA4U1G suivant la norme NF A55-010 on a constaté l'établissement d'un jeu axial consécutif au fluage de l'alliage notamment par suite d'une élévation de température au delà de 40"C ou d'une tension de serrage initiale trop élevée.When the constituent material of the arm is for example a zinc alloy better known under the reference ZA4U1G according to standard NF A55-010, an axial clearance has been established following the creep of the alloy in particular as a result of a temperature rise above 40 "C or too high an initial tightening tension.

Dans ces conditions ce type d'alliage est inadapté à la fabrication de pièces devant subir de fortes tensions internes notamment lors du fonctionnement au contact de matériaux stables.Under these conditions, this type of alloy is unsuitable for the manufacture of parts which must undergo high internal stresses, in particular during operation in contact with stable materials.

Pour remédier à cet inconvénient on a réalisé des pièces en alliage d'aluminium dont le procédé de moulage sous pression nécessite des installations différentes. Les pièces obtenues dans un alliage tel que par exemple l'AS9 U3 sont ainsi mieux adaptées à réaliser la fonction de bras support de porte balai.To overcome this drawback, aluminum alloy parts have been produced, the pressure molding process of which requires different installations. The parts obtained from an alloy such as, for example, the AS9 U3 are thus better suited to performing the function of the brush holder support arm.

L'invention part de l'idée de modifier locaIement les caractéristiques mécaniques des bras existants par mise en place d'un insert permettant d'utiliser sans modifications notables les installations de moulage existantes de confection des dits bras.The invention is based on the idea of locally modifying the mechanical characteristics of the existing arms by fitting an insert allowing the existing molding installations for making said arms to be used without significant modifications.

Selon l'invention, le moule reçoit avant l'injection de l'alliage un insert monté sur un noyau dont le diamètre est sensiblement égal au diamètre de l'axe et ledit insert possède une portée frontale d'appui de l'écrou. According to the invention, before the injection of the alloy, the mold receives an insert mounted on a core whose diameter is substantially equal to the diameter of the axis and said insert has a front bearing surface for the nut.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture d'un exemple de réalisation de celle-ci en référence au dessin annexé dans lequel: - la figure 1 est une coupe partielle du bras support monté sur son axe.Other characteristics and advantages of the invention will appear on reading an exemplary embodiment of the latter with reference to the appended drawing in which: - Figure 1 is a partial section of the support arm mounted on its axis.

- la figure 2 est une représentation schématique de l'installation de
moulage du bras support.- Figure 2 is a schematic representation of the installation of
support arm molding.

En référence à la figure 1, le bras support 1 du porte-balai d'essuie-vitre est muni d'un perçage 2 qui constitue le logement de montage d'un axe d'entraînement 3. Le perçage 2 est porté par un insert 7 qui caractérise ledit bras-support. Referring to Figure 1, the support arm 1 of the wiper blade holder is provided with a hole 2 which constitutes the mounting housing for a drive shaft 3. The hole 2 is carried by an insert 7 which characterizes said support arm.

L'axe 3 possède une denture 4 extérieure d'entraînement du bras 1 et une extrémité filetée 5 sur laquelle est montée un écrou de serrage 6 qui maintient la denture 4 au contact dudit bras.The axis 3 has an external toothing 4 for driving the arm 1 and a threaded end 5 on which is mounted a tightening nut 6 which maintains the toothing 4 in contact with said arm.

La denture 4 est usinée sur une partie conique de l'axe 3 et est encastrée dans l'insert 7, noyé dans la matière constitutive du bras 1 et porte le perçage 2. L'insert 7 possède une portée frontale 8 de serrage au contact de la base de l'écrou 6. L'insert 7 peut comporter accessoirement une surface périphérique d'encastrement 9 dans le matériau constitutif du bras 1. La surface de serrage de l'écrou est ainsi constituée par la portée 8 et permet l'encastrement sous tension de la denture 4 dans l'insert 7.The toothing 4 is machined on a conical part of the axis 3 and is embedded in the insert 7, embedded in the material constituting the arm 1 and carries the bore 2. The insert 7 has a front bearing 8 of contact clamping of the base of the nut 6. The insert 7 may incidentally include a peripheral embedding surface 9 in the material constituting the arm 1. The tightening surface of the nut is thus constituted by the bearing 8 and allows the embedding of teeth 4 under tension 7.

Le perçage 2 de l'insert 7 porte une denture obtenue par encastrement au contact de la denture 4 de l'axe 3.The bore 2 of the insert 7 carries a toothing obtained by embedding in contact with the toothing 4 of the axis 3.

Selon l'exemple représenté, la matière du bras 1 est un alliage de zinc tel que ZA 4 U1G connu sous la dénomination ZAMAK 5.According to the example shown, the material of the arm 1 is a zinc alloy such as ZA 4 U1G known under the name ZAMAK 5.

L'axe 3 est en acier et l'insert 7 est un alliage d'aluminium, moulé ou corroyé.The axis 3 is made of steel and the insert 7 is an aluminum alloy, molded or wrought.

La figure 2 représente l'ensemble du moule 10, avec l'insert 7 mis en place, avant injection de l'alliage de zinc. FIG. 2 represents the whole of the mold 10, with the insert 7 in place, before injection of the zinc alloy.

L'insert 7 est monté dans l'empreinte 12 du moule sur un noyau 13 dont le diamètre est sensiblement égal au diamètre de l'axe 3. Par ailleurs dans l'empreinte 12 débouche le canal d'amenée de l'alliage de zinc dans le moule. I1 est bien évident que le moule 10 peut contenir une suite indéterminée d'empreintes analogues à l'empreinte 12 pour la fabrication en grande série des bras. The insert 7 is mounted in the cavity 12 of the mold on a core 13 whose diameter is substantially equal to the diameter of the axis 3. Furthermore in the cavity 12 opens the supply channel of the zinc alloy in the mold. It is obvious that the mold 10 may contain an indefinite series of imprints similar to the imprint 12 for the mass production of the arms.

Claims (3)

REVENDICATIONS 1) Procédé de réalisation par moulage d'un bras support (1) notamment1) Production method by molding a support arm (1) in particular pour porte-balai d'essuie-vitre qui comporte un perçage (2) de for wiper blade holder which has a bore (2) of montage d'un axe (3) muni d'une denture extérieure et qui est mounting of an axis (3) provided with an external toothing and which is maintenue au contact dudit bras par un écrou de serrage (6), held in contact with said arm by a clamping nut (6), caractérisé par le fait que le moule reçoit avant l'injection de characterized in that the mold receives before injection of l'alliage un insert (7) monté sur un noyau (13) dont le diamètre est the alloy an insert (7) mounted on a core (13) whose diameter is sensiblement égal au diamètre de l'axe (3) et que ledit insert possède substantially equal to the diameter of the axis (3) and that said insert has une portée frontale de serrage (8) de l'écrou. a front clamping surface (8) of the nut. 2) Procédé selon la revendication 1, caractérisé par le fait que le bras2) Method according to claim 1, characterized in that the arm (1) est élaboré par coulée d'un alliage de zinc autour d'un insert (7) (1) is produced by casting a zinc alloy around an insert (7) en alliage d'aluminium. aluminum alloy. 3) Bras support obtenu selon le procédé des revendications 1 et 2,3) support arm obtained according to the method of claims 1 and 2, caractérisé par le fait que le logement (2) de l'insert (7) porte une characterized in that the housing (2) of the insert (7) carries a denture, obtenue par encastrement au contact de la denture (4) de toothing, obtained by embedding in contact with the toothing (4) of ltaxe d'entraînement (3) et une portée de serrage au contact de la ltax drive (3) and a clamping range in contact with the base de l'écrou (6) de fixation.  base of the fixing nut (6).
FR9206411A 1992-05-26 1992-05-26 PROCESS FOR PRODUCING A SUPPORT ARM, PARTICULARLY FOR A WIPER BLADE HOLDER. Expired - Fee Related FR2691656B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9206411A FR2691656B1 (en) 1992-05-26 1992-05-26 PROCESS FOR PRODUCING A SUPPORT ARM, PARTICULARLY FOR A WIPER BLADE HOLDER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9206411A FR2691656B1 (en) 1992-05-26 1992-05-26 PROCESS FOR PRODUCING A SUPPORT ARM, PARTICULARLY FOR A WIPER BLADE HOLDER.

Publications (2)

Publication Number Publication Date
FR2691656A1 true FR2691656A1 (en) 1993-12-03
FR2691656B1 FR2691656B1 (en) 1997-03-21

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FR9206411A Expired - Fee Related FR2691656B1 (en) 1992-05-26 1992-05-26 PROCESS FOR PRODUCING A SUPPORT ARM, PARTICULARLY FOR A WIPER BLADE HOLDER.

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Country Link
FR (1) FR2691656B1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716964A1 (en) * 1994-12-13 1996-06-19 Robert Bosch Gmbh Attachment element for a windscreen wiper, as well as method and apparatus for its manufacture
US5697420A (en) * 1996-01-31 1997-12-16 Toyoda Gosei Co., Ltd. Method of manufacturing vehicle steering wheel metal core unit
DE19710604A1 (en) * 1997-03-14 1998-09-17 Itt Mfg Enterprises Inc Device and method for producing a cast workpiece with a cast insert
EP1568425A1 (en) * 2004-02-24 2005-08-31 Kabushiki Kaisha Toyota Jidoshokki Casting and method of making such casting
EP1584388A1 (en) * 2004-04-05 2005-10-12 Kabushiki Kaisha Toyota Jidoshokki Cap nut for envelopment casting, casting including the cap nut and method of enveloping the cap nut in casting
FR2883823A1 (en) * 2005-03-31 2006-10-06 Valeo Systemes Dessuyage Motor axle sealing device for motor vehicle, has hooking unit, provided on driver, in annular hook shape delimiting edge of metallic insert of driver, where unit hooks annular skirt shaped device and is made of plastic material
CN1318161C (en) * 2004-04-05 2007-05-30 株式会社丰田自动织机 Cap nut for envelopment casting, casting including the cap nut and method of enveloping the cap nut in casting
WO2012089600A1 (en) * 2010-12-29 2012-07-05 Valeo Wischersysteme Gmbh Wiper arm connection and windscreen wiper drive with a wiper arm connection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2124865A5 (en) * 1971-02-09 1972-09-22 Rau Swf Autozubehoer
EP0010826A1 (en) * 1978-03-23 1980-05-14 Ford Motor Company Limited Method of manufacturing components adapted to be mounted on a shaft; and components, especially steering wheel hubs, so obtained
DE3221391A1 (en) * 1982-06-05 1983-12-08 Robert Bosch Gmbh, 7000 Stuttgart WIPING DEVICE FOR WINDOWS OF MOTOR VEHICLES
EP0199311A2 (en) * 1985-04-19 1986-10-29 Klöckner-Humboldt-Deutz Aktiengesellschaft Method of casting in of inserts in a Cylinder head

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2124865A5 (en) * 1971-02-09 1972-09-22 Rau Swf Autozubehoer
EP0010826A1 (en) * 1978-03-23 1980-05-14 Ford Motor Company Limited Method of manufacturing components adapted to be mounted on a shaft; and components, especially steering wheel hubs, so obtained
DE3221391A1 (en) * 1982-06-05 1983-12-08 Robert Bosch Gmbh, 7000 Stuttgart WIPING DEVICE FOR WINDOWS OF MOTOR VEHICLES
EP0199311A2 (en) * 1985-04-19 1986-10-29 Klöckner-Humboldt-Deutz Aktiengesellschaft Method of casting in of inserts in a Cylinder head

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0716964A1 (en) * 1994-12-13 1996-06-19 Robert Bosch Gmbh Attachment element for a windscreen wiper, as well as method and apparatus for its manufacture
US5697420A (en) * 1996-01-31 1997-12-16 Toyoda Gosei Co., Ltd. Method of manufacturing vehicle steering wheel metal core unit
DE19710604A1 (en) * 1997-03-14 1998-09-17 Itt Mfg Enterprises Inc Device and method for producing a cast workpiece with a cast insert
EP1568425A1 (en) * 2004-02-24 2005-08-31 Kabushiki Kaisha Toyota Jidoshokki Casting and method of making such casting
US7086448B2 (en) 2004-02-24 2006-08-08 Kabushiki Kaisha Toyota Jidoshokki Casting and method of making such casting
EP1584388A1 (en) * 2004-04-05 2005-10-12 Kabushiki Kaisha Toyota Jidoshokki Cap nut for envelopment casting, casting including the cap nut and method of enveloping the cap nut in casting
CN1318161C (en) * 2004-04-05 2007-05-30 株式会社丰田自动织机 Cap nut for envelopment casting, casting including the cap nut and method of enveloping the cap nut in casting
US7255930B2 (en) 2004-04-05 2007-08-14 Kabushiki Kaisha Toyota Jidoshokki Cap nut for envelopment casting, casting including the cap nut and method of enveloping the cap nut in casting
AU2005201404B2 (en) * 2004-04-05 2008-06-26 Kabushiki Kaisha Toyota Jidoshokki Cap nut for envelopment casting, casting including the cap nut and method of enveloping the cap nut in casting
FR2883823A1 (en) * 2005-03-31 2006-10-06 Valeo Systemes Dessuyage Motor axle sealing device for motor vehicle, has hooking unit, provided on driver, in annular hook shape delimiting edge of metallic insert of driver, where unit hooks annular skirt shaped device and is made of plastic material
WO2012089600A1 (en) * 2010-12-29 2012-07-05 Valeo Wischersysteme Gmbh Wiper arm connection and windscreen wiper drive with a wiper arm connection

Also Published As

Publication number Publication date
FR2691656B1 (en) 1997-03-21

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ER Errata listed in the french official journal (bopi)

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ER Errata listed in the french official journal (bopi)

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ST Notification of lapse