EP2720914A1 - Balai d'essuie-glace pour le nettoyage des vitres, notamment de véhicules à moteur - Google Patents

Balai d'essuie-glace pour le nettoyage des vitres, notamment de véhicules à moteur

Info

Publication number
EP2720914A1
EP2720914A1 EP12717286.4A EP12717286A EP2720914A1 EP 2720914 A1 EP2720914 A1 EP 2720914A1 EP 12717286 A EP12717286 A EP 12717286A EP 2720914 A1 EP2720914 A1 EP 2720914A1
Authority
EP
European Patent Office
Prior art keywords
wiper blade
side part
attachment point
spring rail
wiper
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.)
Withdrawn
Application number
EP12717286.4A
Other languages
German (de)
English (en)
Inventor
Geert Jans
Peter Saevels
Guido Tuyls
Martin Kipfmueller
Hubert Verelst
Eric Windmolders
Jan Van Hoye
Marcello Bubba
Hervé Bratec
Jochen Weidlich
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2720914A1 publication Critical patent/EP2720914A1/fr
Withdrawn legal-status Critical Current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
    • B60S1/38—Wiper blades
    • B60S1/3848—Flat-type wiper blade, i.e. without harness
    • B60S1/3849—Connectors therefor; Connection to wiper arm; Attached to blade
    • B60S1/3851—Mounting of connector to blade assembly
    • B60S1/3855—Mounting of connector to blade assembly by welding, gluing or the like
    • 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
    • B60S1/38—Wiper blades
    • B60S1/3848—Flat-type wiper blade, i.e. without harness
    • B60S1/3849—Connectors therefor; Connection to wiper arm; Attached to blade
    • B60S1/3865—Connectors having an integral pivot pin for connection with the wiper arm
    • B60S1/3868—Connectors having an integral pivot pin for connection with the wiper arm pin formed on the exterior of side walls

Definitions

  • Wiper blade for cleaning windows, especially of motor vehicles.
  • the support element over the entire swept by the wiper blade wiping field should ensure the most uniform distribution of the wiper blade outgoing wiper blade contact pressure on the disc.
  • Disc measured strongest curvature On the support element, a connecting device is attached, via which the connection is made to the wiper arm.
  • connection device by means of a
  • the either of metal or a plastic existing wiper blade-side connecting element is applied or pushed onto the support member and connected by means of a resistance welding in the case of a metal fastener or by means of an ultrasonic welding in the case of a plastic fastener cohesively with the support member.
  • This welded joint is exposed to extreme conditions in everyday life and has to withstand high torques and vibrations even in different weather conditions. Particularly in the case of the wiper blades produced in large quantities, the welded connection places high quality demands on the process management.
  • the attachment point can be arranged on one side, for example on the convex upper or the concave lower band side, but it is also possible that the attachment point on the two opposite
  • attachment point should not be understood as a mathematically one-dimensional point but as a technically conditioned, small locally restricted surface in contrast to a line-like or planar one
  • the power flow can be optimized, starting from the wiper arm on the wiper blade side part in the spring rails, when the one attachment point per spring rail centrally, in particular in a region below the axis and / or axle, is arranged.
  • the attachment point may be within the vertical projection of the axle or axle or even extend beyond.
  • the introduced force acts perpendicularly from the wiper arm starting directly to the attachment point of each spring rail and thereby avoids additional moments or stresses.
  • attachment point is arranged eccentrically with respect to the longitudinal extension of the wiper blade side part, in particular outside a region below the axle and / or axle retainer, it is possible for a part of the force to be targeted into a part of the shaft
  • Wischblatts for example, to the outer circle of the wiping movement, initiated. Although these are only very small force differences, but can affect a wiping result under different conditions. If the one attachment point per spring rail is a melting point, it can be generated simply by heat introduction or ultrasound introduction.
  • the material can only be light
  • the invention also relates to a method for producing a wiper blade, in which the wiper blade-side of the connection device is fastened to the support element via an attachment point per spring rail.
  • This one attachment point can be selectively introduced and monitored during insertion. This can improve the quality of the
  • Attachment point can be increased.
  • the attachment point can then bring in, if this means
  • a further increase in quality of the attachment point is achieved if its production takes place in several temporal stages.
  • the stages can run sequentially one after the other or overlap in time.
  • the flow of energy is controlled in one step and the process path in the other step.
  • tolerances can be compensated for.
  • FIG. 1 shows a wiper blade according to the invention in a perspective illustration with wiper arm and dash-dotted line indicated surface of a windscreen
  • FIG. 2 is a view according to II-II in FIG. 1
  • FIG. 3 is a schematic representation of the view according to FIG. 2 4 shows a schematic view in the viewing direction IV in FIG. 1 with only one end cap
  • FIG. 5 shows a schematic diagram of a wiper blade with a receiving device
  • a wiper blade 10 shown in FIG. 1 has a strip-like, elongated, spring-elastic support element 12 (FIGS. 1 and 2), on the lower, concave hinge side 31 facing the disc an elongated, rubber-elastic wiper strip 14
  • the wiper blade-side part 15 of a connecting device 20 is arranged in its central portion, with the help of the wiper blade 10 articulated with a dash-dot line in Figure 1 indicated wiper arm 16 solvable can be connected.
  • the wiper arm 16, which oscillates in the direction of a double arrow 18 in FIG. 1, is loaded in the direction of an arrow 24 to be wiped-for example, to the windshield of a motor vehicle-the surface of which is indicated by a dot-dash line 22 in FIG. Since the line 22 is intended to represent the strongest curvature of the disk surface, it is clearly evident that the curvature of the still-unloaded wiper blade resting against the disk at its two ends is greater than the maximum disk curvature (FIG. 1). Under the
  • Contact pressure sets the wiper blade 10 with its wiper lip 26 over its entire length on the disk surface 22 at. This builds in mostly made of metal, resilient support member 12, a voltage which for a
  • Spring strips 28 and 30 is constructed, which are spaced apart and justify a gap 32.
  • the wiper blade-side part 15 of the connecting device 20 has in a lower region two U-shaped receptacles 34 and 36, in which the spring strips 28 and 30 are accommodated.
  • the receptacles 34 and 36 comprise the spring strips 28 and 30 each over a larger part of its cross section, wherein the wiper arm 16
  • Support member 12 is disposed, while the concave side 31 is opposite thereto. Furthermore, the attachment points 70 can be seen, which are arranged depending on the manufacturing method on the tape top and / or on the underside of the belt and depending on
  • Manufacturing method may have different sizes. Will the
  • Attachment points created by an externally applied adhesive they may be limited in the case of a resin used closely to the input location, while a thin liquid adhesive by capillary action may be a slightly more extensive area affected. Even with ultrasonic welding, depending on the molten material, smaller or larger attachment points 70 can occur. Here size variations from 15 to 70 mm 2 are easily accessible. It remains essential to the invention that the attachment point 70 is generated from one point and comprises a contiguous area.
  • the wiper blade-side part 15 of the connecting device 20 is shown schematically, wherein in the receptacle 34, the corresponding spring bar 28 is located, while the spring bar 30, not in the corresponding receptacle 36 is located. It can be seen that the receptacles 34 and 36, the spring strips 28 and 30 fit around. In the area above the spring strips 28 and 30 and above the gap 32, the wiper blade-side part 15 has a recess 40 into which, when the wiper blade 10
  • Wiper lip 26 is drawn, shows the spring strips 28 and 30, the gap 32 and the receptacles 34 and 36 of the connecting device 20. It can be seen that in this embodiment of the wiper blade 10, the spring strips 28 and 30 are completely separated from each other and only by the connecting device 20 and end caps 38, of which in Fig. 4 is drawn only one at one end, are held together.
  • FIG. 3 different openings and recesses for the coupling of the energy are shown, it being understood that the skilled person will select the respective embodiment for optimizing its connection and the process reliability accordingly.
  • an attachment point 70 is generated.
  • a simple through-hole 44 is shown, through which a sonotrode 45 can be placed directly on the spring strip and starting heating from the support element 20 can be established.
  • a blind hole 48 is shown, in which the sonotrode 45 first melts and displaces part of the material of the connecting device 20 before it comes into contact with the spring strip 28.
  • a two-stage through-hole is shown with a first larger blind hole 52 and
  • a two-stage blind hole is shown, with a larger first blind hole 58 and an adjoining second smaller blind hole 60th
  • Fig. 4 an off-center mounted through holes 44 can be seen from below, which are introduced into the receptacle 36.
  • a single through-hole 62 is alternatively inserted centrally analogous to the passage bore shown in the area 50.
  • both spring rails will either have an attachment point either centrally or off-center, but not mixed.
  • a wiper blade according to the prior art is shown schematically.
  • the receiving device 20 is within the wiper blade side member 15 with its receptacle 34, the curved spring rail 32. It is fixed with two attachment points 70 on the wiper blade side part 15, wherein the two attachment points 70 have a distance 72 to each other, which is about 30 mm with real wiper blades ,
  • the spring rail 32 has a curvature that changes over its entire length and in today's systems has a minimum radius 74 in the region between the attachment points 70.
  • Spring bar 32 in a more extended position along the double arrow 76 transferred.
  • the wiper blade 10 passes over areas of different curvature on the windshield, so that a constant movement along the double arrows 76 is produced.
  • This periodic variation caused by the transfer of the curved spring bar 32 in a stretched form a periodic change in the distance 72, resulting in a periodic mechanical stress, in particular to shear stresses of the Fixing points 70 leads.
  • the variation of the distance 72 may be in the range of 0.1 to 0.5 ⁇ . If the distance 72, for example, by incisions or undercuts within certain limits variable, the
  • the connection between the wiper blade side member 15 and the spring rail 28 causes.
  • the wiper blade-side part 15 an axle 80 and an axle receptacle 82 in the form of a bore for various pendulum adapters.
  • the axis 80 and / or the axle receptacle 82 is used. It is essential that the force introduced by the wiper arm, not shown, is transmitted along the part 24 via the axis 80 or axle receptacle 82 directly to the centrally introduced fastening point 70 and thus onto the spring strip 28. It creates a homogeneous flow of power.
  • a wiper blade side member 15 is shown in perspective and in the partial figure b from the top, in which the receptacle 32 relative to the receptacle 36 is extended in the partial figure a.
  • blind bores 48 are introduced, of which either one per spring rail 28, 30 is used, to generate an attachment point 70 by means of ultrasound.
  • the variants of the wiper blade-side parts 15 according to FIGS. 6 and 7 differ with respect to the invention in that, in the vertical projection, the fastening point 70 in the region below the axis 80 or axle receptacle 82 in FIG.
  • the force flow in the variant of the wiper blade-side portion 15 of FIG. 7 is carried out starting from the wiper arm along the arrow 24 via axis 80 and axle 82 to the eccentrically arranged attachment points 70 and from there to the spring strips 28, 30. This creates a slight torque in Direction of the arrow 84. This can
  • the attachment point 70 is regularly designed as a melting point that is generated by ultrasonic action.
  • attachment point 70 is a melting point, it more or less intimately connects the material of the wiper blade-side part 15, which is preferably a thermoplastic plastic, directly with the spring rail 28, 30 or else with a coating of the spring rail 28, 30.
  • Spring rails 28, 30 introduced into the receptacles 34, 36 and mechanically fixed. Then is prepared per spring rail 28, 30 in attachment point, which connects the wiper blade-side part 15 of the connecting device with the spring rail 28, 30 of the support member 12.
  • the attachment points 70 are produced by means of ultrasonic welding, wherein the sonotrodes melt material of the wiper blade side part 15 and with the
  • the fastening act for producing an attachment point 70 passes through several temporal stages. Different levels are controlled and / or changed in the stages. In particular, during one stage the flow of energy is controlled while in another stage the process path is controlled.
  • controlled can be understood to mean a simple control or else a direct control in which parameters are continuously recorded and used to adapt the flow of energy or energy
  • a sonotrode 45 after the spring bar 28, 30 is inserted into the wiper blade-side part 15, placed on the wiper blade-side part 15. Then, in a first stage, a limited amount of energy is supplied, in a second stage with the sonotrode 45 a defined way to process.
  • the two stages are sequential in time, but may overlap to some extent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Window Of Vehicle (AREA)

Abstract

L'invention concerne un balai d'essuie-glace (10), et un procédé de production d'un balai d'essuie-glace (10), pour le nettoyage des vitres, notamment les vitres d'un véhicule à moteur, comprenant un élément support (12) pour le logement d'une lame d'essuie-glace (14), auquel est fixé un dispositif de raccordement (20), qui présente un élément (15), côté balai d'essuie-glace, pourvu de logements en forme de griffes (34, 36), qui enserrent, au moins partiellement, ledit élément support (12). L'invention est caractérisée en ce que l'élément (15), côté balai d'essuie-glace, du dispositif de raccordement (20), est fixé, par un point de fixation (70) pour chaque rail élastique (28, 30), à l'élément support (12).
EP12717286.4A 2011-06-14 2012-04-26 Balai d'essuie-glace pour le nettoyage des vitres, notamment de véhicules à moteur Withdrawn EP2720914A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110077483 DE102011077483A1 (de) 2011-06-14 2011-06-14 Wischblatt zum Reinigen von Scheiben insbesondere von Kraftfahrzeugen
PCT/EP2012/057646 WO2012171698A1 (fr) 2011-06-14 2012-04-26 Balai d'essuie-glace pour le nettoyage des vitres, notamment de véhicules à moteur

Publications (1)

Publication Number Publication Date
EP2720914A1 true EP2720914A1 (fr) 2014-04-23

Family

ID=46017858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12717286.4A Withdrawn EP2720914A1 (fr) 2011-06-14 2012-04-26 Balai d'essuie-glace pour le nettoyage des vitres, notamment de véhicules à moteur

Country Status (4)

Country Link
EP (1) EP2720914A1 (fr)
CN (1) CN103608222B (fr)
DE (1) DE102011077483A1 (fr)
WO (1) WO2012171698A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3019373T3 (pl) * 2013-07-09 2018-01-31 Fed Mogul Sa Wycieraczka szyby przedniej
CN105578000B (zh) * 2015-11-06 2018-09-28 倪嫣婷 风力自清洁户外摄像头

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718490A1 (de) 1997-05-02 1998-11-05 Bosch Gmbh Robert Wischblatt für Scheiben von Kraftfahrzeugen
DE19814609A1 (de) * 1998-04-01 1999-10-07 Bosch Gmbh Robert Wischblatt zum Reinigen von Scheiben von Kraftfahrzeugen
WO2000073111A1 (fr) * 1999-05-28 2000-12-07 Robert Bosch Gmbh Essuie-glace pour vitres de vehicules automobiles
DE50309219D1 (de) * 2002-11-26 2008-04-03 Valeo Wischersysteme Gmbh Vorrichtung zum lösbaren verbinden eines wischblatts mit einem antreibbaren wischarm
DE10362341B3 (de) * 2002-11-26 2023-02-09 Valeo Wischersysteme Gmbh Wischerblatt
US8122560B2 (en) * 2006-08-04 2012-02-28 Dongguan Hongyi Wiper Co., Ltd. Windshield wiper bridge base assembly
FR2925001B1 (fr) * 2007-12-18 2010-02-12 Valeo Systemes Dessuyage Balai d'essuie-glace dote d'un connecteur et procede de fabrication d'un tel balai
DE102009002411A1 (de) * 2009-04-16 2010-10-21 Robert Bosch Gmbh Wischblatt für einen Scheibenwischer
DE102009046776A1 (de) * 2009-11-17 2011-05-19 Robert Bosch Gmbh Wischblatt in Flachbalkenbauweise

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012171698A1 *

Also Published As

Publication number Publication date
WO2012171698A1 (fr) 2012-12-20
DE102011077483A1 (de) 2012-12-20
CN103608222B (zh) 2016-09-14
CN103608222A (zh) 2014-02-26

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