FI106944B - Cleaning groove for windscreen wipers in vehicles - Google Patents

Description

106944

Vehicle window wiper cleaning groove

The present invention relates to a groove for cleaning a vehicle window, primarily a windscreen wiper.

Such a groove is known to be provided, for example, on the windscreen wiper movement path of the vehicle, such that during the wiper movement, the wiper blade extends its entire length over the cleaning groove. The purpose of the groove is to scrape the edges of the molten contaminants at its edges. The groove is most often made by sanding or sandblasting on the windscreen, about 0.3 mm deep and about 3-5 mm wide.

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An alternative "groove" embodiment is a tape or tape to be glued to the glass surface where the groove may be realized to meet the above dimensions, or in the simplest embodiment a groove formed by a sharp edge of the tape.

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In all of these known embodiments, the groove is implemented in a straight line, and positioned at a slight angle deviating from the melt direction. The purpose of the deviation is to cause the wiper blade to cross the groove in a scissor-like manner, whereby the crossing is smooth and the wiper scraper is also effective. The problem with this implementation, however, is: there has been a change of position caused by the wear of the wiper mechanism, whereby the blade, with the contribution of the wiper flexibility and the drive line, over time aligns with the groove in the operating position.

In this situation, the feather will drop along its entire length into the groove and cause the blade to flutter during the crossing of the groove. Bounceing degrades the actual action of the molten wiping of the 35 window surfaces, and on the other hand, the groove-wiping molten scraping scraper substantially worsens with the loss of the Saxon wiper movement.

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The above-mentioned problems associated with known wiper cleaning grooves can be eliminated in accordance with the invention by having the groove curved from a molten rest position to a turning position. This ensures that the blade does not fit into the groove along its entire length, even if wear on the wiper mechanism causes changes in the blade position. It is also possible for the arcuate implementation of the groove to ensure that the angle between the molten groove and the groove remains constant throughout the crossing stroke, during which time the molding edge scrubbing pattern remains constant over the entire length of the melt.

Other features of the invention will be apparent from the following dependent claims.

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The invention will be explained in more detail with reference to the accompanying drawing, in which

Figure 1 illustrates an embodiment of the invention on a windshield, Figure 2 shows a specific embodiment of a cleaning groove,

Fig. 3 shows another specific embodiment of the groove, and Fig. 4 shows a third special embodiment of the groove.

Fig. 5 shows another specific embodiment of the groove 25 Fig. 1 schematically shows a conventional vehicle windscreen 1 for cleaning the vehicle incorporating conventional wipers 2. The wiper rest position is conventionally assumed at the bottom of the windscreen. At the bottom edge of the windscreen, some wiper 30 having a cleaning groove 3 above its resting position so that the wiper going to the wiper blade has to pass over the groove. The groove length is adapted to slightly exceed the wiper blade length.

35 In the embodiment shown, the groove is curved upward, i.e. curved in the outward direction A of the sweep movement, so that the radius of curvature is uniformly reduced toward the root of the wiper. The full 106944 groove shape ensures that the angle between the molten groove and the groove remains unchanged, both during wiping outward movement A and in reverse reverse movement.

5 The groove 3 is made on a windscreen or other window with a vehicle wiper in a manner known per se, either by sanding disc or sandblasting. The groove may have a conventional depth of about 0.3 mm as well as a conventional width of 3-5 mm.

10

An embodiment of the groove is shown in Fig. 2, in which the groove 3 is implemented with one side bevelled. This groove serves to purify the flux only during a parallel movement of the melt. However, the advantage of the groove is its improved cleanliness as well as the reduced attenuation effect it provides on the windscreen or similar vehicle window. For the sake of self-cleaning of the groove, such a groove should be made on the windshield so that the gentle bevelled surface 5 is located on the downward edge of the groove. Then, the sharp edge 4 of the blade 20 also provides a cleaning scraper for the blade as it leaves its resting position for sweeping motion. During the return movement, the feather effectively rinses the groove as dirt remaining in the groove is removed along a gentle bevel 5.

The invention may be practiced using tape or tape applications known per se instead of the aforementioned grooves on the glass surface. These embodiments are illustrated by Figures 3, 4 and 5.

30,. In the embodiment of Fig. 3, the groove 3 is formed on the tape 6 with one-sided bevelling. The other edge of the tape is also provided with a bevelled edge to facilitate flow of molten material over the edge of the tape. In addition, in the embodiments of Figures 3 and 4, the width of the tape is a specialty. After cleaning groove 3 is on tape. a relatively wide area 7 so dimensioned that «· 4 106944 wiper blade settles in this area in its resting position. If the material of the tape is selected from a suitable plastic material, this structure can prevent the melt from sticking to its resting position.

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Another alternative embodiment of the tape solution is shown in Fig. 4, in which the molten edge scrubbing is performed by a single "groove" 3 'formed by the sharp edge of the tape. In the solution of Fig. 5, the abovementioned knob 8 is replaced by a one-sided bevelled groove from the embodiment of Fig. 3 to 15. In this embodiment, both edges of the wiper blade are cleaned in a similar manner to the solution of Fig. 4. a widened area 7 to prevent the aforementioned molten freezing.

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Claims (9)

1. A window provided in the windscreen (1) or in another with a wiper (2) on a car or a corresponding vehicle, the cleaning com- pany (3) for the wiper, characterized in that the cutter (3) is bending in the direction of the direction of movement (A) of the blade (2) from a resting position to a reversing position. 15 Cleaning cutter according to claim 1, characterized in that the radius of bending of the cutter is different in different places of the length of the cutter. - * · - 2 0 3. Cleaning cutter according to claim 1 or 2, characterized in that the cutter (3) has a sharp bevel (4) at its one edge and a slightly inclined bevel (5) at its opposite edge. . Cleaning insert according to claim 3, characterized in that the slightly inclined bevel (5) of the insert (3) lies on the side of the inner cup. Cleaning cutter according to any of the preceding claims 1-4, characterized in that the cutter (3) is fitted as a recess made in the window glass surface. Cleaning cutter according to any of the preceding claims 1-4, characterized in that the cutter (3) lies in a band (6) fixable at the window surface or the like. 106944 Cleaning cutter according to claim 6, characterized in that the strip (6) or the corresponding has a portion connecting to the cutter (3) for the rest position of the dryer. 58. Cleaning cutter according to claim 6 or 7, characterized in that the strip has a raised (8) parallel to the cutter. Cleaning cutter according to any of the preceding claims 6-8, characterized in that the cutter (3) is provided as a sharp edge of the band (6) or the corresponding one. • e. <t (