EP0971832A2 - Lame d'essuie-glace - Google Patents

Lame d'essuie-glace

Info

Publication number
EP0971832A2
EP0971832A2 EP99934208A EP99934208A EP0971832A2 EP 0971832 A2 EP0971832 A2 EP 0971832A2 EP 99934208 A EP99934208 A EP 99934208A EP 99934208 A EP99934208 A EP 99934208A EP 0971832 A2 EP0971832 A2 EP 0971832A2
Authority
EP
European Patent Office
Prior art keywords
bracket
claw
wiper
wiper blade
strip
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Withdrawn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
EP99934208A
Other languages
German (de)
English (en)
Inventor
Joachim Zimmer
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 EP0971832A2 publication Critical patent/EP0971832A2/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Withdrawn legal-status Critical Current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
    • B60S1/3801—Wiper blades characterised by a blade support harness consisting of several articulated elements
    • 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
    • B60S2001/3812—Means of supporting or holding the squeegee or blade rubber
    • B60S2001/3813—Means of supporting or holding the squeegee or blade rubber chacterised by a support harness consisting of several articulated elements

Definitions

  • the invention is based on a wiper blade according to the preamble of claim 1.
  • a fastening part is generally fastened to a drive shaft, to which a joint part is connected via a hinge pin.
  • a wiper rod adjoins the joint part and a wiper blade is hooked into the hook-shaped end.
  • the wiper blade generally has a multi-member support bracket system with intermediate brackets hinged to a main bracket, the ends of which are articulated to the claw brackets.
  • the claw brackets hold one at their ends with their claws
  • Wiper strip on their header.
  • the multi-section support bracket system and a spring rail inserted into the head strip of the wiper strip enable the wiper strip to adapt to a curved windshield when wiping with a uniform contact pressure.
  • the invention is based on the realization that particularly by air gaps between the stirrups and the Wischlei ⁇ ste of the driving wind is swirled amplified and produces whistling and buoyancy forces.
  • the air gap between the claw bracket and the wiper strip is reduced or avoided. This reduces turbulence, wind resistance, wind noise and buoyancy forces without the need for an additional, usually cost-intensive component.
  • the distance between the overlapping part of the claw bracket and the head strip causes the head strip of the wiper strip to move between the claws without friction in the claw bracket and to adapt to the windshield.
  • Claw bracket can have a closed profile at the top and only cover the header with one side wall.
  • a U-profile that is wider than that is advantageous Header and covers the header with both side walls.
  • the wide U-profile ensures high bending stiffness with low weight.
  • the U-profile of the claw bracket may be made narrower to the intermediate bracket and ste to Kopflei- broaden out, making for the support bracket system herkömm ⁇ Liche joints between bracket and main bar can be used.
  • the intermediate bracket and the claw bracket is wider than the header and the
  • Claw bracket is almost straight in the overlapping areas towards the wiper strip.
  • the joint between the intermediate bracket and the claw bracket is arranged with a small distance above the head bar. The overall height and the inflow area of the wiper blade are reduced, and with it the wind resistance and wind noise.
  • the windshield wiper In order to change the wiper blade or to clean the windshield in the area of the windshield wiper, the windshield wiper is folded up from the windshield. It is not excluded that the windshield wiper folds back without braking and the wiper blade collides with the windshield, for example if the windshield wiper is accidentally hit when cleaning the windshield. All components must therefore be designed for the permanent loads during wiping and the load that arises when the wiper blade impacts the windshield.
  • the relatively narrow claw brackets are usually over-sized for normal operation, which is associated with increased weight and a larger area exposed to the wind. The greatest bending stress occurs at the joint of the claw bracket in the middle between the claws.
  • the head strip of the wiper strip is arranged so that when the wiper blade strikes it can be supported on the head strip of the wiper strip even with a small elastic deformation of the claw bracket.
  • Fig. 1 shows a section of a wiper blade in side view
  • Fig. 2 is an enlarged view of section II in
  • FIG. 3 is a view of a claw bracket of FIG. 2 from above without an intermediate bracket
  • FIG. 4 is a view of a section along the line IV-IV in Fig. 2 and 3, 5 is an enlarged view of section V in Fig. 1,
  • Figure 6 shows a spreader bar, the len between its Kral ⁇ covers. A header laterally completely exceeded,
  • FIG. 7 is an enlarged view of a section along the line VII-VII in Fig. 6,
  • FIG. 8 shows a variant according to FIG. 6,
  • FIG. 9 is an enlarged view of a section along the line IX-IX in FIG. 8,
  • FIG. 10 is an enlarged view of a section along the line X-X in Fig. 8,
  • FIG. 11 shows an enlarged view of a section along the line XI-XI in FIG. 8
  • FIG. 12 shows a variant according to FIG. 6,
  • Fig. 13 shows a claw bracket with an open top
  • FIG. 14 shows a variant according to FIG. 13.
  • a wiper blade shown in FIG. 1 belongs to a windshield wiper of a motor vehicle, which is not shown completely.
  • the wiper blade is driven by a, in
  • Fig. 1 dash-dotted wiper arm 108, moved over a windshield of the motor vehicle to be wiped.
  • the wiper blade has a multi-section support bracket system 10 which has intermediate brackets 12 which are connected to a main bracket 110 and at the ends of which two claw brackets 22, 24 are arranged via two joints 16, 18. With short wiper blades, the intermediate bracket 12 can be omitted.
  • the term bracket in the claims therefore includes both the main bracket 110 and the intermediate bracket 110. claw bracket 12.
  • the claw brackets 22, 24 each have claws 42, 44, 46, 48 at their ends. 2 and 5, the claw brackets 22, 24 are shown enlarged.
  • the claws 42, 44, 46, 48 of the claw brackets 22, 24 include a head strip 62 of a wiper strip 64 in a non-positive manner, as a result of which
  • Wiper strip 64 is attached to the bracket system 10 (Fig. 11). There is an air gap 112 between the claw bracket 22 and the head strip 62, which is reduced according to the invention by the claw bracket 22 covering the head strip 62 laterally in an area 74 from the claw 44 in the direction of the joint 16 (FIGS. 2, 3 and 4) ).
  • the claw bracket 22 has a U-profile, which is wider in the area 74 than the header 62 and surrounds it with a top wall 114 and two side walls 66, 68.
  • the claw bracket 24 covers the head strip 62 from both ends in the direction of the joint 18 in a region 76 and in a region 78, as a result of which only a small air gap 126 remains between the claw clamp 24 and the head strip 62.
  • a claw bracket 26 is shown, the header 62 over the entire area 80 between two Claws 50 and 52 covered with its side walls 86, 88, thereby completely avoiding an air gap.
  • a driving wind 120 acting on the wiper blade can flow over the claw bracket 26 (FIG. 7). Turbulence 122 due to an air gap between the claw bracket 26 and the head strip 62 are avoided and thus the wind resistance, the wind noise and the buoyancy forces are reduced.
  • the intermediate bracket 12 and the joint 16, 18 are arranged at a distance above the head strip 62 and the claw bracket 22, 24, 26 tapers in the direction of the joint 16, 18, as is the case here can be seen in particular in FIG. 7.
  • conventional joints 16, 18, intermediate bracket 12 and main bracket 110 can be used for the support bracket system 10.
  • the intermediate bracket 12 and the claw bracket 26 are articulated in the joint 16 via a rivet pin 116 and a bearing bush 118.
  • the claw bracket 28 shown in Fig. 8 covers the
  • the claw bracket 28 is connected to an intermediate bracket 14 via a joint 20.
  • the claw bracket 28 is designed to be flatter or more straight and the joint 20 is only arranged at a small distance 102 above the header 62 (FIG. 9).
  • the intermediate bracket 14 and the claw bracket 28 each have a U-profile, both of which are wider than the head strip 62 and cover these with their side walls 90, 92 and 124, 128.
  • the flat claw bracket 28 reduces the overall height of the wiper blade and thus the wind resistance and wind noise.
  • the intermediate bracket 14 and the claw bracket 28 are in the joint 20th connected via a rivet pin 40 and a bearing bush 34.
  • the wiper blade accidentally unrestrained from a folded-up position back to the windscreen, for example, when cleaning the windscreen, so can the stirrups 28 in the area of the joint 20 after a small elastic deformation on the head bar 62 different bearing ⁇ zen.
  • the bending load on the claw bracket 28 is limited to a low value.
  • the claw bracket 28 is dimensioned less strong and can thus be made lighter and less expensive.
  • the claw bracket 28 is curved in this area 38, which results in a large distance 36 between the top bar 62 and the claw bracket 28 (FIG. 10).
  • FIG. 12 shows a variant of a claw bracket 30 for the exemplary embodiment in FIG. 8.
  • a claw bracket 30 covers an entire area 84 between two claws 58 and 60.
  • the claw bracket 30 runs from both
  • the claw bracket 30 thus has a particularly small area exposed to the wind.
  • 13 and 14 are claw brackets 30 and 32 with a
  • the described claw brackets 22, 24, 26, 28, 30, 32 can be used individually or in various combinations on a wiper blade.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Tires In General (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

L'invention concerne une lame d'essuie-glace servant au nettoyage de vitres de véhicules, qui comporte un système d'étriers de support (10) à plusieurs éléments qui présente un étrier à griffes (22, 24, 26, 28, 30, 32) relié à un étrier simple (12, 14) par l'intermédiaire d'une articulation (16, 18, 20), cet étrier à griffes retenant à ses extrémités, avec ses griffes (42, 44, 46, 48, 50, 52, 54, 56, 58, 60) une partie de raclage (64) par sa partie tête (62). Il est proposé, selon l'invention, que l'étrier à griffe (22, 24, 26, 28, 30, 32) recouvre, au moins dans une zone (74, 76, 78, 80, 82, 84) se trouvant entre les griffes (42, 44, 46, 48, 50, 52, 54, 56, 58, 60), ladite partie tête (62) latéralement, à une certaine distance (70, 72) de celle-ci.
EP99934208A 1998-02-03 1999-01-20 Lame d'essuie-glace Withdrawn EP0971832A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1998104136 DE19804136A1 (de) 1998-02-03 1998-02-03 Wischblatt
DE19804136 1998-02-03
PCT/DE1999/000113 WO1999039947A2 (fr) 1998-02-03 1999-01-20 Lame d'essuie-glace

Publications (1)

Publication Number Publication Date
EP0971832A2 true EP0971832A2 (fr) 2000-01-19

Family

ID=7856475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99934208A Withdrawn EP0971832A2 (fr) 1998-02-03 1999-01-20 Lame d'essuie-glace

Country Status (3)

Country Link
EP (1) EP0971832A2 (fr)
DE (1) DE19804136A1 (fr)
WO (1) WO1999039947A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB802388A (en) * 1956-07-10 1958-10-01 Citroen Sa Andre Improvements in or relating to windshield wipers
US3060480A (en) * 1959-07-24 1962-10-30 Gen Motors Corp Windshield wiper blade
FR2258990B1 (fr) * 1974-01-30 1978-03-17 Journee Paul
DE7407325U (de) * 1974-01-30 1974-06-12 Journee P Schutzscheibenwischer mit Druckbereichen für Kraftfahrzeuge
US5983440A (en) * 1995-08-04 1999-11-16 Ford Motor Company Low profile windshield wiper assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9939947A2 *

Also Published As

Publication number Publication date
WO1999039947A3 (fr) 1999-09-23
WO1999039947A2 (fr) 1999-08-12
DE19804136A1 (de) 1999-08-12

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