CN1676383B - wiper blade - Google Patents

Abstract

The invention relates to a windshield wiper blade for window pane of vehicle comprising a connection part mounted on a support unit and a support hole for a jointed shaft, wherein one end of the jointed shaft is connected with a windshield wiper arm, one side face of which extends to the windshield wiper. The connection part comprises a cap made of plastic material, where the cap fixes the blade and a windshield wiper arm in an assembled position, and an assurance yoke facing to side of the windshield wiper arm, wherein the assurance yoke is provided with a groove open to the window pane of vehicle and the end of the windshield wiper arm moves into the groove at an assembled state. The side face of the cap, which is depart from the windshield wiper arm, includes a locating surface extending on a plane horizontal with the support hole, and the assurance yoke selectively and fixedly connected with the windshield wiper arm can lean against the locating surface at an assembled state.

Description

wiper blade

technical field

The invention relates to a wiper blade for automobile window glass.

Background technique

From DE 199 24 662 A1 a windshield wiper with a loosely articulated wiper blade is known, which is articulatedly connected to a wiper arm via a so-called "side locking system". A two-part connecting body is used for this purpose, the first part of which has a frame-shaped section with a bearing hole and which surrounds the elastic strip serving as a bearing element from the sides and below with shaped form-fitting connecting elements. The second part is attached to the free end of the wiper arm, which has a U-shaped contour that is open toward the vehicle window. A pin is inserted into the second part laterally and transversely to the longitudinal direction of the wiper arm and directed towards the wiper blade, and is pivotally mounted in the bearing opening of the first part of the connecting body.

Parallel to the pin, a safety clip is arranged longitudinally offset on the second part of the connecting body, the safety clip being bent at its free end towards the side of the pin. In an assembly position in which the wiper blade is fixed transversely to the longitudinal direction of the wiper arm, the pin can be pushed into the bearing opening of the connecting part. If the wiper blade is then rotated parallel to the longitudinal direction of the wiper arm, the clip overlaps the wiper blade and locks the wiper blade with its bent end, thereby locking the frame of the first part of the connecting body In the assembled state, the side guide surfaces of the profile guide between the bent end of the bridge arm and an opposing surface of the second part. In the operating position of the wiper blade, the clip enters a corresponding groove in the first part and closes essentially flush with its top side. For removal, the wiper blade must be pivoted in the opposite direction until the bent ends disengage and the wiper blade can be pulled off the pin.

Known from DE 28 30 508 A1 is a wiper blade device for motor vehicle windows. This device has a wiper arm which is fixedly connected to a pivot pin. The articulated pin extends in a plane that runs substantially parallel to the vehicle window and is rotatably mounted in a bearing bore of the wiper blade. In order to prevent the hinge journal from slipping out of the bearing hole during a wiper movement, a shoulder protruding in the extension of the wiper arm engages in a groove of a projection so that the wiper blade is positioned at the hinge axis. The neck is locked axially relative to the wiper arm, and the projection is fixedly connected to the wiper blade laterally with this wiper blade. The outer side of the groove forms a shoulder against which the projection rests in the operating position and thus locks the wiper blade axially against the hinge pin.

Contents of the invention

According to the invention, the connecting piece comprises a plastic cover which, during operation, secures the wiper blade and the wiper arm in the assembled position, and has a securing clip on the side facing the wiper arm, which secures The clip has a groove that opens to the window glass of the vehicle. In the assembled state, the assigned end of a wiper arm can enter this recess, whereby the position of the wiper blade on the pivot axis is fixed relative to the wiper arm. At the same time, the plastic cover provides a further means of axially securing the wiper blade on the articulation shaft. For this purpose, the plastic cover has a positioning surface on the side facing away from the wiper arm, which extends in a plane transverse to the bearing bore, and in the assembled state, a safety catch which is optionally fixedly connected to the wiper arm. The hoop can rest against this positioning surface. Therefore, the wiper blade with the plastic cover is suitable for two types of windshield wipers, that is, one is a safety clip fixedly connected to the wiper blade and overlaps the wiper arm, and the other is a safety clip The collar is fixedly connected to the wiper arm and the wiper blade overlaps in the area of the plastic cover.

In order to maintain a clear, easy-to-reshape positioning surface, the invention proposes that the positioning surface is formed by support ribs. Furthermore, the safety clip slightly exceeds the height of the wiper blade. According to one embodiment of the invention, therefore, it is provided that the plastic cover has a connection contour for a spoiler at its end, wherein the drive-side connection contour has a recess for a safety clip. The recess is bounded towards the free end of the connecting contour by a bead. Alternatively or additionally, the plastic cover can also have a transverse groove on its top side which is offset to the drive side relative to the bearing opening.

Description of drawings

Further advantages of the invention emerge from the following figures. Exemplary embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain numerous features in combination. A person skilled in the art can also consider these features individually and combine them into other meaningful combinations in a suitable manner.

The accompanying drawings show:

FIG. 1 shows a partial perspective view of a wiper blade according to the invention from above at a connecting part area,

FIG. 2 shows a partial view according to FIG. 1 with an assembled wiper arm,

FIG. 3 shows a schematic view from below of a wiper blade according to FIG. 2 ,

FIG. 4 shows a variant of FIG. 2 .

List of reference signs

10 wiper blades

12 deflector

14 Connectors

16 plastic cover

18 Support hole

20 insurance clips

22 grooves

24 Support ribs

26 hinged shaft

28 shaft head

30 wiper arm

32 overhangs

34 connectors

36 Insurance clamp

38 Bend ends

40 horizontal groove

42 Connection profile

44 Boss

46 pits

Detailed ways

In a partial perspective view from above, mainly a wind deflector 12 and a plastic cover 16 of a connecting part 14 in a wiper blade 10 , which is arranged in a window of the wind deflector 12 , are seen. A wiper strip is conventionally located on the lower, invisible side of the wiper blade 10 with a carrier element to which the connecting piece 14 is connected via a sheet metal clip.

The wiper blade 10 is articulated to a wiper arm 30 via a connecting piece 14 and a plastic cover 16 according to the so-called "side locking principle". For this purpose, the plastic cover 16 has a bearing opening 18 into which an articulation shaft 26 fixedly connected to the wiper arm 30 is inserted. In the embodiment according to FIG. 2, the articulation shaft 26 has a flat shaft head 28, by means of which the articulation shaft is firmly bonded, welded or otherwise fixed to a mating surface of the wiper arm superior. In the exemplary embodiment according to FIG. 4 , the articulation shaft 26 is fastened to a connecting part 34 which is fixedly connected to the wiper arm 30 , for example by pressing, compressing, welding, gluing or the like. The articulation shaft 26 is preferably pressed into a transverse hole in a side wall of a U-profile of the connecting element 34 .

In the exemplary embodiment according to FIG. 2 , the wiper blade 10 is fixed axially on the articulation shaft 26 by the plastic cover 16 overlapping the safety clip 20 on the side facing the wiper arm 30 by means of a safety clip 20 . As a result, during assembly, an end 32 of the wiper arm 30 protruding beyond the articulation axis 26 can be swiveled into a recess 22 that is open downwards toward a vehicle window. The protruding end 32 is thus fixed in the direction of the articulation axis 26 in the assembled state. In the exemplary embodiment according to FIGS. 2 and 3 , safety clip 20 is arranged on the end face of plastic cover 16 facing away from the drive of the wiper blade and facing the outer end of wiper blade 10 . Alternatively or additionally, however, it is also possible for the plastic cover to bear against the side of the articulation shaft 26 or the bearing bore 18 facing the drive, the recess 22 forming a suitable recess for the wiper arm 30 .

The embodiment according to FIG. 4 shows that the same wiper blade 10 with the same plastic cover 16 is mounted on a wiper arm whose connecting part has a securing clip 36 next to the articulation axis 26 which overlaps. The plastic cover 16 is also guided via a bent end 38 on a positioning surface in the form of a support rib 24 . The wiper blade 10 is thus secured in the axial direction of the articulation axis 26 between the bent end 38 at the bearing opening 18 and an opposite starting surface. The maximum height of the wiper blade 10 is located in the region of the articulation axis 26 . In order for this joint axis to be slightly exceeded by the safety clip 36 , the connecting contour 42 has a recess 46 on the support rib 24 , which is bounded towards the drive side by a projection 44 . For the same purpose, the plastic cover can have a transverse groove 40 which can cooperate with a correspondingly shaped safety clip.

Claims (3)

1. A wiper blade (10) for a vehicle window, the wiper blade having a connecting piece (14), which is arranged on a support element of the wiper blade (10) and has A bearing hole (18) for an articulated shaft (26) connected at one end to a wiper arm (30) extending laterally to said wiper blade (10), wherein said The connecting piece (14) comprises a plastic cover (16), which holds the wiper blade (10) and the wiper arm (30) in the assembled position during operation, and which faces the wiper arm (30) On the side there is a safety clip (20), which has a recess (22) open towards the vehicle window, into which the end of the wiper arm (30) can enter in the assembled state. groove, and the plastic cover has a positioning surface (24) on the side facing away from the wiper arm (30), which extends in a plane transverse to the bearing hole (18), and in the assembled state a A safety clip (36), optionally fixedly connected to the wiper arm (30), can bear against this positioning surface, and the positioning surface is formed by the support rib (24). 2. The wiper blade (10) according to claim 1, characterized in that the plastic cover (16) has a connection contour (42) for a wind deflector (12) at its end, wherein The drive-side connecting contour (42) has a recess (46) for a safety clip (36), which is delimited toward the free end by a projection (44). 3. The wiper blade (10) according to any one of the preceding claims, characterized in that the plastic cover (16) has an offset towards the drive side on its top side relative to the bearing hole (18). Set the transverse groove (40).

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