DE1505614A1 - Wiper blade for vehicle windows - Google Patents

Description

15056U

R.No. 8672
July 18, 1966 Ki / Sz

Attachment to

Patent and _4nma1 , _{m (} .

Utility model auxiliary. ^{Sign up}

P OB ERT BOS CH GMBH, Stuttgart W, Breitscheidstrasse 4

Wiper blade for vehicle windows

The invention relates to a wiper blade for vehicle windows, with a wiper strip made of rubber-elastic material, stiffened by metallic conveyor layers, the wiper lip of which is attached to that of
The side facing away from the window to be wiped passes over into a wider head bar, sunk into the lateral grooves, and furthermore with at least one support bracket that serves to grasp and hold the weigh bar and connect it to a swivel arm, the support bracket with opposite pairs Holding claws are provided, which encompass the back of the head strip and grip with their inwardly bent free ends under the spring rails.

009832/0 1 0 1 bathroom original

Robert Bosch GmbH R, No. 8672

Stuttgart 18.7 * 1966 Ki / Sz

In known * wiper blades of this type, the inwardly curved free ends of the retaining claws engage in lateral longitudinal grooves of the head strip. which are arranged in addition to the longitudinal grooves receiving the spring rails and run parallel to them. The on each longitudinal side of the header between the two longitudinal grooves beam-like wall sections formed to ensure that the retaining claws and d: .a spring rails can not touch, while the ^ claw between the longitudinal grooves for receiving the support and the both sides of the wiper lip running along the base edges of the Bar-like .vand sections formed head strip prevent contact of the retaining claws with the pane to be cleaned. These known wiper blades are characterized by a safe and low-noise connection of the weighing bar with de..i support bracket Speeds of the vehicle the development of harmful buoyancy forces on the wiper line is favored.

Other known wiper blades of the type mentioned have on the base flanks of the head strip against the window and on the sides protruding shoulder lugs, which serve both as a protective cover for the retaining claws and to secure them against longitudinal displacement on the wiper strip. These wiper blades have the disadvantages that when they are assembled, the finished support bracket or the support bracket composed of several individual brackets can simply be opened onto the wiper strip from its front side, as the retaining claws of the support bracket do not have the shoulders on the: - Able to slide away the base flanks of the head bar. The mounting bracket (s) must therefore be placed on the wiper strip from the back h ■ with pre-bent retaining claws and only then bent into their final shape. This operation on the already surface-treated support brackets is cumbersome and can lead to rejects in production.

009-832 / 0101 · ". , _M1 ,

Robert Bosch GmbH R.Nr. 8672

Stuttgart 18.7 * 1966 Ki / 3z

The invention is based on the object of a weighing sheet for a vehicle To create panes that are low, work quietly and have the mounting bracket system in a fully assembled state with the wiper strip can be connected.

To solve this problem it is proposed according to the invention that the inwardly curved free ends of the retaining claws directly into the longitudinal grooves of the head lines, which are used to hold the spring rails. engage with local displacement of the wall sections delimiting the length grooves below the spring rails.

This means that the top bar is only one on each long side needs to have only one longitudinal groove and therefore a correspondingly low: can have a profile. The ort by the free ends of the retaining claws borrowed the wall section of the head strip? press the retaining claw ax firmly to the spring rails, go that a metallic clatter of the Tel is avoided in the operation of the wiper blade.

It is particularly advantageous when the header r 3eheibe facing, len in their * ^A * both sides of the wiper lip running along Basieflenken after the disc and the sides open, pocket-like Ausnehmunge to the weakening of the longitudinal grooves on the Singrlffsstellen the Haltekra having below the Federschlanen limiting wall portions .

The depth of each taaohen-shaped recess can be dimensioned in this way that the web-like wall section remaining between the bottom of the recess and the longitudinal groove is on the one hand strong enough to rattle-free contact between the retaining claw and the spring assembly to ensure, on the other hand, however, is also so elastic that when the Wisohblatts work on a more strongly curved disc, it holds claw against the spring rails and the wiper strip can move longitudinally enough *

- 4 -009832/0101

Robert Bosch GmbH R.Mr. 8672

Stuttgart 18 «7.1966 Ki / Sz

In a further embodiment of the invention, it is proposed that the back of the head strip has two local elevations which are spaced one behind the other and between which there is a pair of claws dee the handle late grabbing the wisole. Advantageously, dl · local governing surveys be located in the vicinity of a front end "of Wisohlelste, the one sohrMge on from the front end further wegliegende elevation on the side facing away from de 'front end side tread tu" erleichter th via push of having the front end of the associated claw pair can .

Hereby achieved let that au · tjehreren ElnselbUgeln completely assembled Tragbügelsystea by simple Aufsohleben may be old de 'visas · sheet, wherein the pair of claws front in Aufsohieberichtung about the Local surveys aa Rttoken the Wisoh- 1eiste slides and thereafter the connection trap secures against unintentional loosening. -

In the newspaper is a Wieohblatt as an embodiment of the invention shown for the windshield of a motor vehicle.

Show it:

Pigc 1 the weighing sheet in side view,

Flg. 2 shows a partial view of the Wlsohblatts on an enlarged scale,

Pig. 3 a section along line IXI-IIX in Flg. 2,

Flg. 4 one of the Flg. 3 corresponding sonship through the Wisoh- * bar alone and

Flg. 5 shows a section along line VV in FIG. I of the two end sections of the wiper blade on an enlarged scale.

The wiper blade has a rubber wiper 11, which is attached via a bracket system 13 with a dash-dotted line.

009832/0101

BAD OPJG (NAL - 5 -

15056U

Robert Bosch OmbH nt »« * - '*' - • TT.Nr. 8672 Stuttgart. qtS. · 7 «1966 Ki / Sz

indicated swivel arm 13 connectable 1st. The ^{support bracket y8EeB 0} Tk consists of a main bracket 14 with a U-shaped cross-section and two double-bracket brackets 15 which are roof-shaped in cross-section and are hinged to the ends of the main bracket in the manner of a horizontal beam. At their ends, the ZwlsohenbÜgel 15 form retaining claws 16 which, in pairs opposite one another, grip and hold the wiper strip 11. The main bracket 14 carries a bolt 17 in the middle of its length, on which the latching spring bracket 18 is pivotably mounted in two-footed latching spring brackets. To connect the wiper blade to the swivel arm 13, the hook-shaped unbent end is pushed over the bolt 17 and the locking spring clip 18 until a lug 19 of the locking spring clip engages in a loop 20 of the swivel arm and secures the connection against unintentional loosening.

The wiper strip 11 has a 'wisohllppe 21, which has a thin-walled Web 22 in one piece with a wider head strip 23 connected «^ f * The head strip 23 has a trapezoidal cross-section and is delimited by two rare flanks 24, a rear flank 25 and two base flanks 26 running alongside the thin-walled web 2P. The side flanks 24 each have a longitudinal groove 27 in each of which a metallic Spring rail 28 is sunk in for resilient stiffening of the wiper strip. To secure against longitudinal displacement, the spring rails 28 each have a rectangular edge recess 29 into which a the base of the Nufc protruding projection 30 of the wiper strip matching intervenes. The longitudinal grooves 27 open at the left end of the wiper strip in the end face 31 from, while at the other end up to one Shoulder 32 lead. The longitudinal grooves 27 are arranged so that the Spring soles 28 to the Baslsflanken 26 a smaller distance than to the RUoken flank 25 of the head strip 23

The latter has two local elevations on each of the rare flanks 24 and 35, at a distance corresponding to the width of the retaining claws one behind the other in the vicinity of the end carrying the shoulders 32 the wish list are arranged. The surveys 34 and 35 arise

009832/0101

BAD GWG ^

Robert Bosch GmbH R.NrV 8672 Stuttgart, July 18, 1966 Xi / Sz

their facing seldom steeply into the plane of the rare flanks 24, while they merge flat into the side flanks 24 on the other sides. At the attack parts of the retaining claws l6 has Head strip 23 in the base flanks 26, pocket-shaped recesses 36 on. Between the bottom, of each recess 36 and the flank of each longitudinal groove 27 facing the recesses is a web-like Wall section 37 is formed. The wisehlippe 21 carries two stop strips 38 ″ on its long sides, one of which each when moving the Wlsohblatts over the disk to rest on one of the base flanks 26 the head strip 23 comes and here the Winkelaussohlag the Wisohlippe ?! limited to the longitudinal center plane of the wiper strip.

The retaining claws 16 of the support bracket 15 have inwardly curved ends 4o which pierce into the longitudinal grooves 27 in the region of the recesses 36 and grasp directly under the spring rails 28. The free Ends 40 here displace the web-like wall sections 37 into the Recesses 36 into it. The wall abutments 37 are dimensioned in such a way that they press the retaining claws 16, 40 firmly against the spring soles and thereby prevent the parts from rattling when the wiper blade is in operation. The wall abutments 37, however, are also so elastic that the free ends 40 when working the Wlsohblatts.on a curved Moving the washer in the longitudinal grooves 27 without great resistance *

When assembling the Wlsohblatts, the two Pedersoles 28 must first be inserted into the longitudinal grooves 27 of the head strip 23. Then / 1st the fully assembled support bracket system 12 from the end face 31 to push forward on the Wisohlelste 11, which thanks to the freely opening longitudinal grooves 27 on the end face 31 does not cause any difficulty. The free ends 40 of the cold claws 16 slide along the pedestal rails 28 when they are pushed on, displacing the wall sections of the head strip 23 located below the claws by an amount corresponding to the material thickness of the claws. That in up-

009832/0101 BAD ORIGINAL _ ₇ "

'15056H

Robert Bosch OabH R.Nr. 8672 Stuttgart - July 18, 1966 Ki / Sz

sihiebarichtung forwardmost pair of claws 16, l6 occurs shortly before reaching the prescribed assembly position on raising 3 to the header 23 of time, and then between the alternate sloping Fanlten of raises J> k _t lock 35 and to secure the parts against ungewoll · ts loosening. In this position, the retaining claws l6 grasp exactly over the recesses> 6 in the head strip 23.

009832/0101

Claims (7)

15056H Robert Bosch GmbH R.Mr; 8672 Stuttgart 7/18/1966 Ki / Sz claims 1. Wiper blade for vehicle windows, with a wiper strip made of gumaielaatisoheii fabric , stiffened by metallic spring soles, the wiper lip of which on the side facing away from the window to be wiped trerects into one of the spring bars in lateral longitudinal grooves 'Receiving broader header Skips "and further aged at least one of detecting and holding the Wlsohleiete and joining a pivot arm ejit serving Tra.gbügelj the bit pairs fled against *. · Opposite Hai te claw provided 1st," check · comprise the back of the head strip and engage with their inwardly offered free ends under the spring rails, characterized in dft · the inwardly bent free ends (4o) of the holding claws (16) directly into the serving for receiving the Federsohlenen (28) Langenuten (27) of the head strip (23) Place high displacement of the wall sections (37) delimiting the length grooves below the spring rails. 2. Wiper blade according to claim 1, daduroh gekennze pays off that the head bar (23) in its BasIsflanken facing the disc (26) after the disc and the sides open pocket-shaped recesses (36} for weakening the Longsnuten (27) on the Gripping points of the Haitekrallen (i6) below the wall delimiting the spring rails «sections (37). 009832/0101 bad oriq {nal q 15056H -ν- Robert Bosch OmbH RoNr. 8672 Stuttgart July 18, 1966 Ki / Sz 3 * Wlsohblatt according to claim 1 or 2 _S daduroh characterized in that the back of the head strip (23) has two spaced apart local elevations (34, 35) between which a pair of claws (16, 16) of the bracket (15) gripping the wiper strip lies, 4. Wiper blade according to claim 3 j daduroh characterized _s that the local elevations (34, 35) are arranged in the vicinity of one end of the wiper strip (11) and the elevation further away from the end is inclined on the side facing away from the end Auflauffläohe for. has facilitated pushing over of the front end associated Kr & llenpa * ree (16, 16). 5. Wiper blade according to claim 4, characterized in that the Pederschiene receiving longitudinal grooves (27) on the local Elevations (34, 35) facing away from the end of the wiper strip (31) in their End face (31). 6. The wiper blade according to any one of Ansprüohe 3, 4 or 5, the head strip has a at least approximately trapezoidal, against the disk widens nascent profile _t characterized in that the local protrusions (34, 35) to the aohrägen .Seitenflanken (24) of the Head bar. - 3 -009832/0101 bad o> ^^ 40 15056U Robert Bosch GmbH R.Nr. 8672 Stuttgart July 18, 1966 K1 / 3Z 7. Wiper blade according to one of the preceding claims, characterized in that each of the zur. Aufaufnahme the spring rails (28) serve 'the longitudinal grooves (27) a nose protruding from their base (30)
which fits into an edge recess (29) of the pedestal rail inserted into the longitudinal groove, .. BATH ORIGINAL 009832/0101