WO2010031637A1 - Scheibenwischerantrieb - Google Patents
Scheibenwischerantrieb Download PDFInfo
- Publication number
- WO2010031637A1 WO2010031637A1 PCT/EP2009/060180 EP2009060180W WO2010031637A1 WO 2010031637 A1 WO2010031637 A1 WO 2010031637A1 EP 2009060180 W EP2009060180 W EP 2009060180W WO 2010031637 A1 WO2010031637 A1 WO 2010031637A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- output shaft
- windscreen wiper
- gear
- wiper drive
- drive according
- Prior art date
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
-
- 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
-
- 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
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
Definitions
- the invention relates to a windshield wiper drive according to the preamble of claim 1.
- EP 0 918 671 B1 discloses a windshield wiper drive designed as a windshield wiper direct drive.
- a windscreen wiper direct drive is a windscreen wiper drive without linkage in which the output shaft (wiper shaft) is driven by a gearing.
- the windshield wiper drive comprises an electric motor, on the motor shaft rotatably seated a worm gear, with which a trained as a worm gear is driven. Rotationally fixed to the output gear, an output shaft is connected, at whose free end a wiper arm can be fixed.
- the structural unit formed by the output gear and the output shaft is mounted radially in the radial direction exclusively directly via the output shaft within a housing dome.
- the driven gear output shaft combination has a considerable axial extent. Since the available installation space in motor vehicles is limited, there are efforts to reduce the space required, in particular the axial space. Extending the output gear-output shaft combination, to minimize.
- the invention has for its object to propose a windshield wiper drive whose Abtriebsrad- output shaft combination has the smallest possible axial extent.
- the invention is based on the idea not to support the driven gear output shaft combination (unit) as in the prior art exclusively via the output shaft in the radial direction, but additionally or alternatively to a driven shaft radial bearing to realize a driven wheel radial bearing.
- the resulting, extended hub portion serves for lateral support of the output shaft and thus to minimize the risk of lateral tilting of the output gear-output shaft combination, so that the lower output shaft position can be moved in the direction of the free end of the output shaft facing end side of the driven wheel compared to the prior art.
- This makes it possible to shorten the output gear, in particular an axial extension of the output gear on the side remote from the free end of the output shaft side, whereby in particular in combination with a shortened compared to the prior art output shaft, a minimized axial extent of the output shaft-Abriosszahnrad- Combination and thus the entire Scheibewischerantriebs can be achieved.
- the axial extent of the hub portion is chosen to be large enough, it is conceivable to store the output gear-output shaft combination exclusively on the output gear in the radial direction.
- a radial bearing of the output shaft preferably in an area spaced apart axially from the hub portion of the driven gear, is provided.
- the output gear-output shaft combination at a remote from the free end of the output shaft end in and / or on the output gear has a magnetic element for interacting with a magnetic field sensor, preferably for position detection.
- a magnetic field sensor preferably for position detection.
- This is preferably a sensor for utilizing the anisotropic magnetoresistive (AMR) effect.
- the hub portion in the direction of the free end of the output shaft for fixing the wiper and the associated displacement of the recorded in the driven gear end of the output shaft in the direction of the free end of the Output shaft facing end side can also be the, in particular disk-shaped, magnetic element in the axial direction closer to the free end of the wiper shaft facing end of the driven wheel are offset, which has a positive effect on the minimized axial extent of the output shaft-driven gear combination.
- the magnetic element is arranged in alignment with the longitudinal extension of the output shaft in the axial direction.
- the output gear has a, substantially flat cylindrical gear portion having on its lateral surface a toothing, preferably a worm gear, for cooperation with a worm gear.
- This flat cylindrical gear portion is surmounted by the, preferably hollow cylindrical, hub portion in the axial direction towards the free end of the output shaft. It is now particularly preferred if the magnetic element interacting with the magnetic field sensor is completely received by the gearwheel section and does not project beyond the drivenwheel on the side facing away from the free end of the output shaft.
- the magnetic element projects beyond the flat-cylindrical gear section in the direction away from the free end of the output shaft (preferably only slightly).
- the radially mounted hub portion is mounted by means of a sliding bearing construction to minimize the radial extent of the windshield wiper drive in the radial bearing area.
- the radially mounted acts Bearing section in this case together with a bearing bush, which is preferably either directly from the housing of the windshield wiper drive or arranged in the housing, is supported on the housing and / or formed at this einggeleg- th insert formed.
- the bearing bush is formed by a hollow cylindrical portion of the housing or the built-in part.
- the mounting part is a stamped and bent part made of metal which, in addition to its, preferably hollow cylindrical, bearing bush section for radially supporting the hub section of the driven wheel, comprises a preferably flat, preferably annular section extending in the radial direction which serves as an axial start for the output gear in a region radially outside the hub portion.
- an embodiment can be realized in which the output shaft-driven gear combination is mounted in the radial direction exclusively on the extended hub section.
- a radial bearing preferably a plain bearing of the driven shaft, is provided at an axial distance from the radially supported hub portion.
- the output shaft is positively connected to the output gear.
- the output shaft preferably has a surface structure, preferably an edge, in a form-fit section. ment, with which the positive connection is made to the output gear, in particular to the hub region.
- the form-fit section forming a positive connection with the output gear extends in the axial direction into a region of the output shaft which projects radially up to within the radially outer hub section, or in the extended hub section is included.
- the hub portion supports the output shaft radially inwardly over most of its axial extent.
- Fig. 1 shows a first embodiment of a windshield wiper drive only partially shown, wherein on a gear portion axially superior portion of the driven gear, a magnetic element is arranged, and
- Fig. 2 shows an alternative embodiment of a windshield wiper drive, wherein the magnetic element completely in the gear portion of the driven wheel is received and the output shaft is shortened compared to the embodiment of FIG. 1.
- a trained as a windshield wiper direct drive windshield wiper drive 1 is shown in detail for a motor vehicle.
- the windshield wiper drive 1 comprises an electric motor, not shown, which rotatably drives a gear worm (also not shown) of a transmission 2 shown in detail.
- the transmission 2 comprises a driven wheel 3 designed as a worm wheel, which is equipped on its lateral surface with an outer toothing 4 for cooperation with the gear worm driven by the electric motor.
- the windshield wiper drive 1 comprises a housing 5 made of metal, which is penetrated by a highly simplified illustrated output shaft 6.
- a wiper arm At a protruding from the housing 5 free end 7 of the output shaft 6, a wiper arm, not shown, can be fixed in a conventional manner.
- the output shaft 6 is preferably provided in the region of its free end 7 with a knurled outer cone.
- a crank of a wiper linkage of a wiper system can be fixed at the free end 7.
- the output shaft 6 is rotatably fixed in a central hub portion 8 of the output gear 3 and forms with the output gear 3, an output shaft Abtriebsrad- combination 9.
- the output gear 3 has an approximately flat-cylindrical gear portion 10, a kind of base plate, with the outer teeth 4 on.
- the hub portion 8 extends from an area radially inward of the gear portion 10 in the axial direction to the free end 7 of the output shaft 6 beyond the gear portion 10.
- the hub portion 8 is designed as a blind hole, circular contoured receiving opening 11 is introduced, in which the output shaft 6 is fixed by encapsulation.
- the output shaft 6 is connected in a form-fitting manner to the hub section 8 of the output gear 3 with an end-side, knurled in the embodiment shown form-fitting section 12.
- a magnetic element 13 is provided with axial distance to the lower plane in the plane of the output shaft 6, which is arranged in an area axially outside of the gear portion 10 in an axial extension 14. Viewed in the axial direction, the AMR magnetic element 13 is aligned with the output shaft 6.
- the driven wheel 3 made of plastic, more precisely the hub portion 8 is mounted radially on the outside in an axial section 15.
- the hub portion 8 engages in the axial direction in a hollow cylindrical bearing bush 16, which is formed by a built-in part 17 made of sheet steel, which is supported on the housing 5 in the axial direction.
- the bearing bush 16 is supported radially outwardly in an axially upper area in the plane of the drawing within a dome-shaped section of the housing 5.
- the output gear 3 is supported in the axial direction, wherein for axial support of the driven gear 3 a radially outwardly adjacent to the hub portion 8, the gear portion 10 a piece in the axial Direction superior ring portion 19 is formed.
- the form-fitting section 12 of the output shaft 6 terminates substantially in front of the (in the drawing plane lower) over the gear section 10 in the axial direction extended hub portion 8, which in addition to the illustrated slide bearing function Task has to support the output shaft 6 in the radial direction.
- the actual, acting in the circumferential direction, form fit for torque transmission from the output gear 3 to the output shaft 6 is realized in the radially inside of the gear portion 10 formed portion of the hub portion 8.
- a radial bearing 20 with axial distance to the hub portion 8, ie axially between the free end 7 of the output shaft 6 and arranged the driven gear 3.
- the radial bearing 20 comprises a radial bearing bush 21, which bears radially on the outside of the housing 5 and radially inwardly directly on the output shaft 6.
- Adjoining the radial bearing bush 21 is an annular sealing element 22, which reliably prevents moisture from entering the housing 5.
- FIG. 2 corresponds in its construction and in its operation essentially to the exemplary embodiment shown in FIG. 1 and described above, so that in the following, in order to avoid repetition, essentially the differences from the exemplary embodiment according to FIG. 1 are discussed.
- FIG. 2 With regard to similarities, reference is made to the preceding description of the figures and to FIG.
- the output shaft 6 is formed shortened in the embodiment of FIG.
- the form-fitting section 12 which is likewise formed by knurling in this exemplary embodiment, extends in the axial direction into the end area of the output shaft 6, into the radially extended (extended) hub section 8.
- Sufficient lateral support is provided by the hollow cylindrical hub section, which is axially elongated in comparison with the prior art and analogous to FIG. Due to the shortened design of the output shaft 6 and the resulting axial offset is sufficient space in the gear portion 10 in the axial direction for receiving the magnetic element 13 which is completely received in the gear portion 10 and this is not outstanding in the axial direction.
- the axial distance between the magnetic element 13 and the lower end in the drawing plane of the output shaft 6 as large as in the embodiment of FIG. 1st
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09781538A EP2331369A1 (de) | 2008-09-22 | 2009-08-06 | Scheibenwischerantrieb |
BRPI0918856A BRPI0918856A2 (pt) | 2008-09-22 | 2009-08-06 | acionamento de limpador de para-brisa |
CN2009801368516A CN102159429B (zh) | 2008-09-22 | 2009-08-06 | 雨刷器驱动装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008042246.0 | 2008-09-22 | ||
DE102008042246A DE102008042246A1 (de) | 2008-09-22 | 2008-09-22 | Scheibenwischerantrieb |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010031637A1 true WO2010031637A1 (de) | 2010-03-25 |
Family
ID=41268219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/060180 WO2010031637A1 (de) | 2008-09-22 | 2009-08-06 | Scheibenwischerantrieb |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2331369A1 (de) |
KR (1) | KR20110063473A (de) |
CN (1) | CN102159429B (de) |
BR (1) | BRPI0918856A2 (de) |
DE (1) | DE102008042246A1 (de) |
WO (1) | WO2010031637A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013149952A1 (en) * | 2012-04-03 | 2013-10-10 | Valeo Wischersysteme Gmbh | Device for detecting the angular position of a shaft of a windscreen wiper motor using a magnetoresitive sensor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3044286A1 (de) | 1980-11-25 | 1982-06-24 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Scheibenwischerantrieb fuer kraftfahrzeuge |
FR2698942A1 (fr) | 1992-12-07 | 1994-06-10 | Valeo Systemes Dessuyage | Unité perfectionnée d'entraînement pour une installation d'essuie-glace de véhicule automobile. |
EP1170182A2 (de) * | 2000-07-04 | 2002-01-09 | Asmo Co., Ltd. | Drehpositionssensor und Scheibenwischervorrichtung damit |
EP0918671B1 (de) * | 1997-06-26 | 2003-08-27 | Robert Bosch Gmbh | Elektrische antriebseinheit |
DE102005040647A1 (de) | 2005-08-27 | 2007-03-08 | Valeo Systèmes d`Essuyage | Elektromotorischer Hilfsantrieb für Fahrzeuge |
-
2008
- 2008-09-22 DE DE102008042246A patent/DE102008042246A1/de not_active Withdrawn
-
2009
- 2009-08-06 CN CN2009801368516A patent/CN102159429B/zh not_active Expired - Fee Related
- 2009-08-06 EP EP09781538A patent/EP2331369A1/de not_active Withdrawn
- 2009-08-06 KR KR1020117006542A patent/KR20110063473A/ko not_active Application Discontinuation
- 2009-08-06 WO PCT/EP2009/060180 patent/WO2010031637A1/de active Application Filing
- 2009-08-06 BR BRPI0918856A patent/BRPI0918856A2/pt not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3044286A1 (de) | 1980-11-25 | 1982-06-24 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Scheibenwischerantrieb fuer kraftfahrzeuge |
FR2698942A1 (fr) | 1992-12-07 | 1994-06-10 | Valeo Systemes Dessuyage | Unité perfectionnée d'entraînement pour une installation d'essuie-glace de véhicule automobile. |
EP0918671B1 (de) * | 1997-06-26 | 2003-08-27 | Robert Bosch Gmbh | Elektrische antriebseinheit |
EP1170182A2 (de) * | 2000-07-04 | 2002-01-09 | Asmo Co., Ltd. | Drehpositionssensor und Scheibenwischervorrichtung damit |
DE102005040647A1 (de) | 2005-08-27 | 2007-03-08 | Valeo Systèmes d`Essuyage | Elektromotorischer Hilfsantrieb für Fahrzeuge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013149952A1 (en) * | 2012-04-03 | 2013-10-10 | Valeo Wischersysteme Gmbh | Device for detecting the angular position of a shaft of a windscreen wiper motor using a magnetoresitive sensor |
Also Published As
Publication number | Publication date |
---|---|
CN102159429A (zh) | 2011-08-17 |
BRPI0918856A2 (pt) | 2016-05-03 |
DE102008042246A1 (de) | 2010-04-01 |
EP2331369A1 (de) | 2011-06-15 |
KR20110063473A (ko) | 2011-06-10 |
CN102159429B (zh) | 2013-12-11 |
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