IT9067853A1 - TRANSMISSION DEVICE FOR A WINDSCREEN WIPER FOR VEHICLES - Google Patents

TRANSMISSION DEVICE FOR A WINDSCREEN WIPER FOR VEHICLES Download PDF

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Publication number
IT9067853A1
IT9067853A1 IT067853A IT6785390A IT9067853A1 IT 9067853 A1 IT9067853 A1 IT 9067853A1 IT 067853 A IT067853 A IT 067853A IT 6785390 A IT6785390 A IT 6785390A IT 9067853 A1 IT9067853 A1 IT 9067853A1
Authority
IT
Italy
Prior art keywords
toothed wheel
transmission device
central opening
shaft
knurled
Prior art date
Application number
IT067853A
Other languages
Italian (it)
Other versions
IT9067853A0 (en
IT1249535B (en
Inventor
Luciano Buschi
Luigi Larva
Original Assignee
Magneti Marelli Spa
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 Magneti Marelli Spa filed Critical Magneti Marelli Spa
Priority to IT06785390A priority Critical patent/IT1249535B/en
Publication of IT9067853A0 publication Critical patent/IT9067853A0/en
Priority to DE4135652A priority patent/DE4135652A1/en
Priority to FR9113426A priority patent/FR2668438B1/en
Publication of IT9067853A1 publication Critical patent/IT9067853A1/en
Application granted granted Critical
Publication of IT1249535B publication Critical patent/IT1249535B/en

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/18—Means for transmitting drive mechanically
    • B60S1/26—Means for transmitting drive mechanically by toothed gearing

Description

temente realizzata mediante sinteriszasione o tranciatura (punzonatura). Tali lavorazioni consentono di realizzare la ruota dentata già provvista della zigrinatura o rigatura interna, senza che ciò comporti particolari difficoltà o sostanziali incrementi di costo. carefully made by sintering or shearing (punching). These processes make it possible to produce the toothed wheel already provided with internal knurling or grooving, without this entailing particular difficulties or substantial increases in cost.

L'estremità ta dell'albero 1 viene quindi infissa con interferenza nell'apertura zigrinata 3a della ruota dentata 3, in modo tale da rendere torsi onalmente ed assialmente solidali dette parti. The end ta of the shaft 1 is then fixed with interference in the knurled opening 3a of the toothed wheel 3, in such a way as to make said parts torsionally and axially integral.

La soluzione secondo il trovato risulta dunque economicamente e tecnologicamente più. conveniente delle soluzioni anteriori . The solution according to the invention is therefore economically and technologically more. advantage of the previous solutions.

Naturalmente il trovato si estende a tutte le reai izzazioni che conseguono pari utilità grazie allo stesso concetto innovativo. Naturally, the invention extends to all embodiments which achieve equal utility thanks to the same innovative concept.

dell'albero (1) infissa in tale apertura (3a) è. prima del montaggi a , liscia. of the shaft (1) fixed in this opening (3a) is. before assembly a, smooth.

?.. Dispositivo secando la rivendicazione .1 , caratterizzato dal fatto che detta ruota dentata (3) è realizzata con l 'apertura centrale zigrinata mediante sinterizzazione, ? .. Device according to claim 1, characterized in that said toothed wheel (3) is made with the central opening knurled by sintering,

3. Dispositivo secondo la rivendicazione 1, caratterizzato dal fatto che detta ruota dentata (3) , con la sua apertura centrale rigata o zigrinata, k realizzata mediante tranciatura. 3. Device according to claim 1, characterized in that said toothed wheel (3), with its ribbed or knurled central opening, is made by blanking.

4. Dispositivo di trasmissione per un tergicristallo per autove.i coli , sostanzialmente secondo quanto descritto ed illustrato, e per gli scopi, specificati . 4. Transmission device for an automotive windscreen wiper, substantially as described and illustrated, and for the purposes specified.

"Dispositivo di trasmissione per un tergicristallo per autoveicoli" "Transmission device for an automotive windscreen wiper"

DESCRIZIONE DESCRIPTION

Il presente trovato riguarda un dispositivo di trasmissione per un tergicristallo (anteriore o posteriore) per autoveicoli. The present invention relates to a transmission device for a windshield wiper (front or rear) for motor vehicles.

Pid specificamente, il trovato ha per oggetto un dispositivo di trasmissione comprendente un albero n perno porta-brac cio avente un'estremità piantata con interferenza in un'apertura centrale di una ruota dentata. Specifically, the invention relates to a transmission device comprising an arm-carrying pin shaft having one end driven with interference in a central opening of a toothed wheel.

Secondo la tecnica attuale, l'estremità di tale albero o perno porta-braccio infissa nella ruota dentata viene provvista di una zigrinatura, e .la superficie del 1'apertura centrale della ruota dentata è liscia. L'albero o perno porta-braccio viene realizzato con materiale (acciaio) di ottima qualità, oppure con materiale di medie caratteristiche di resistenza, e in questo secondo caso l'estremità che deve essere infissa nella ruota dentata deve essere sottoposta ad. un trattamento di indurimento, ad esempio ad induzione ad alta frequenza. According to the present art, the end of such shaft or arm-carrying pin fixed in the toothed wheel is provided with a knurling, and the surface of the central opening of the toothed wheel is smooth. The shaft or arm-holder pin is made with high quality material (steel), or with material of medium resistance characteristics, and in this second case the end that must be fixed in the toothed wheel must be subjected to. a hardening treatment, for example by high frequency induction.

In entrambi i casi, il dispositivo di trasmissione risulta piuttosto costoso. In both cases, the transmission device is quite expensive.

L.o scopo del presente trovato è di realizzare un dispositivo di trasmissione del tipo sopra indicato, il quale a sostanziale parità di prestazioni rispetto a quelli attuali risulti realizzabile in modo più semplice ed economico. The object of the present invention is to provide a transmission device of the type indicated above, which, with substantially equal performance with respect to the current ones, can be produced in a simpler and more economical way.

Tale scopo viene realizzato secondo il trovato mediante un dispositivo di trasmissione del tipo sopra specificato, la caratteristi ca principale del quale risiede nel fatto che la superficie del I. 'apertura centrale della suddetta ruota dentata è zigrinata e l'estremità dell'albero infissa in tale apertura è, prima del montaggio, .liscia. This object is achieved according to the invention by means of a transmission device of the type specified above, the main feature of which lies in the fact that the surface of the central opening of the aforementioned toothed wheel is knurled and the end of the shaft fixed in this opening is, before assembly, smooth.

Convenientemente , in modo peraltro già noto, detta ruota dentata pub essere realizzata mediante sinterizzazione o tranciatura. Con questi tipi di lavorazione la zigrinatura del 1 'apertura centrale di tale ruota dentata è agevolmente realizzabile, e non implica alcun sostanziale costo aggiuntivo. Conveniently, in a way which is already known, said toothed wheel can be made by sintering or shearing. With these types of machining, the knurling of the central opening of this toothed wheel is easily achievable, and does not involve any substantial additional cost.

Secondo il trovato risulta dunque possibile utilizzare un albero o perno porta-bracci o di acciaio a bassa resistenza, senza la necessità di dover provvedere ad un trattamento locale di indurimento ad induzione, e senza dover zigrinare l 'estremità di tale albero. According to the invention, it is therefore possible to use a shaft or pin for carrying arms or of low resistance steel, without the need to carry out a local induction hardening treatment, and without having to knurl the end of said shaft.

Ulteriori, caratter isti che e vantaggi del trovato appariranno dalla descrizione dettagliata che segue, effettuata con riferimento al disegno allegato, fornito a puro titolo di esempio non limitativo, nel quale è mostrato in vista prospettica un dispositivo di trasmissione secondo il trovato prima dell 'operazione di piant.aggio con interferenza dell 'albero o perno porta-braccio nella ruota dentata di estremità. Further, characteristics and advantages of the invention will appear from the following detailed description, made with reference to the attached drawing, provided purely by way of non-limiting example, in which a transmission device according to the invention is shown in perspective view before the operation. with interference fit of the shaft or arm-holder pin in the end sprocket.

Con riferimento al disegno, un dispositivo di trasmissione per un tergicristallo per autoveicoli secondo il trovato comprende un albero a perno po rta-brac c.i o 1, realizzato ad esempio in acciaio di tipo 4ΛΜη5Α (resistenza: circa SSO N/mm<">) . With reference to the drawing, a transmission device for a windshield wiper for motor vehicles according to the invention comprises a pivot shaft port-brac c.i or 1, made for example of steel of the 4ΛΜη5Α type (strength: approximately SSO N / mm <">) .

Un'estremità 1a de 1 1 ' a 1. he r o 1 è liscia e nel montaggio viene infissa con interferenza nell'apertura centrale 3a di una ruota dentata 3. Come appare nel disegno, la superficie dell 'apertura centrale 3a della ruota dentata 3 è rigata o zigrinata. Tale ruota dentata pub essere convenien One end 1a of 1 1 'a 1. he r o 1 is smooth and during assembly it is inserted with interference in the central opening 3a of a toothed wheel 3. As shown in the drawing, the surface of the central opening 3a of the toothed wheel 3 is striped or knurled. Such a toothed wheel can be convenient

Claims (1)

Rivendicazioni. 1. Dispositivo di T.rasmissione per un tergicristallo per autoveicoli, comprendente un albero o perno porta-braccio M ) avente prima estremità (1b) piantata con interferenza in un'apertura centrale (3a) di una ruota dentata (3), caratterizzato dal fatto che la superficie dell 'apertura centrale (3a) di detta ruota dentata <3) è zigrinata o rigata, e l'estremità (la) dell'albero <1) infissa in tale apertura (3a) è prima del montaggio, liscia. ?.. Dispositivo secondo la rivendicazione .1, caratterizzato dal fatto che detta ruota dentata (3) è realizzata con l'apertura centrale zigrinata mediante sinterizzazione, 3. Dispositivo secondo la rivendicazione 1, caratterizzato dal fatto che detta ruota dentata (3), con la sua apertura centrale rigata o zigrinata, è realizzata mediante tranciatura. A . Dispositivo di trasmissione per un tergicristallo per autovei coli, sostanzialmente secondo quanto descritto ed illustrato, e per gli scopi, specificati . Claims. 1. Transmission device for a windshield wiper for motor vehicles, comprising a shaft or arm-carrying pin M) having a first end (1b) inserted with interference in a central opening (3a) of a toothed wheel (3), characterized in that the surface of the central opening (3a) of said toothed wheel <3) is knurled or grooved, and the end (la) of the shaft <1) fixed in said opening (3a) is before assembly, smooth. ? .. Device according to claim 1, characterized in that said toothed wheel (3) is made with the central opening knurled by sintering, 3. Device according to claim 1, characterized in that said toothed wheel (3), with its ribbed or knurled central opening, is made by blanking. TO . Transmission device for a windshield wiper for motor vehicles, substantially as described and illustrated, and for the purposes specified.
IT06785390A 1990-10-31 1990-10-31 TRANSMISSION DEVICE FOR A WINDSCREEN WIPER IT1249535B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT06785390A IT1249535B (en) 1990-10-31 1990-10-31 TRANSMISSION DEVICE FOR A WINDSCREEN WIPER
DE4135652A DE4135652A1 (en) 1990-10-31 1991-10-29 Transmission mechanism for wiper arm shaft - has unit for insertion of polished shaft end in fluted hole
FR9113426A FR2668438B1 (en) 1990-10-31 1991-10-30 TRANSMISSION DEVICE FOR A WINDSCREEN WIPER FOR A MOTOR VEHICLE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT06785390A IT1249535B (en) 1990-10-31 1990-10-31 TRANSMISSION DEVICE FOR A WINDSCREEN WIPER

Publications (3)

Publication Number Publication Date
IT9067853A0 IT9067853A0 (en) 1990-10-31
IT9067853A1 true IT9067853A1 (en) 1992-05-01
IT1249535B IT1249535B (en) 1995-02-28

Family

ID=11305798

Family Applications (1)

Application Number Title Priority Date Filing Date
IT06785390A IT1249535B (en) 1990-10-31 1990-10-31 TRANSMISSION DEVICE FOR A WINDSCREEN WIPER

Country Status (3)

Country Link
DE (1) DE4135652A1 (en)
FR (1) FR2668438B1 (en)
IT (1) IT1249535B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29519910U1 (en) * 1995-12-15 1996-02-01 Hella Kg Hueck & Co Accelerator pedal sender
DE19804954A1 (en) * 1998-02-07 1999-08-12 Itt Mfg Enterprises Inc Method for assembling a windshield wiper drive and drive produced by such a method
EP0987081A1 (en) * 1998-09-14 2000-03-22 Electrowatt Technology Innovation AG Method for the assembly of a wheel and a shaft and an apparatus for transmitting forces
DE202005000430U1 (en) * 2005-01-13 2006-05-24 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Attachment of drive element for adjusting seat in motor vehicle has drive element with opening for admission of second drive element whereby one of the surfaces of expandable section results in deformation
CN105840767A (en) * 2015-01-15 2016-08-10 米巴精密零部件（中国）有限公司 Gear assembly
AT522433B1 (en) * 2019-09-27 2020-11-15 Miba Sinter Austria Gmbh gear

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999704A (en) * 1955-09-13 1961-09-12 Haller John Tolerance ring
US3012799A (en) * 1957-07-12 1961-12-12 Ruth D Mayne Hub
FR1392631A (en) * 1964-02-04 1965-03-19 Ateliers Rene Halftermeyer Are New process for manufacturing pinions, in particular for variable capacitor multipliers and products obtained
US3962772A (en) * 1974-09-04 1976-06-15 Michigan Powdered Metal Products, Inc. Shaft-supported composite high-strength machine element and method of making the same
DE3319867A1 (en) * 1983-06-01 1984-12-20 SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen Wiper device, in particular for windows of motor vehicles
JPS6033302A (en) * 1983-08-03 1985-02-20 Nippon Piston Ring Co Ltd Preparation of cam shaft

Also Published As

Publication number Publication date
IT9067853A0 (en) 1990-10-31
FR2668438B1 (en) 1997-08-22
DE4135652A1 (en) 1992-05-07
FR2668438A1 (en) 1992-04-30
IT1249535B (en) 1995-02-28

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971031