Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1994-10-31
1996-02-27
Graham, Gary K.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525031, 1525044, B60S 138
Patent
active
054937507
DESCRIPTION:
BRIEF SUMMARY
PRIOR ART
The invention concerns a wiper blade. In a known wiper blade, as disclosed in German patent 21 54 863 A, during the insertion of the wiping strip into the claws of the holder, a securing element mounted on the wiper strip end engages with its elastically deflectable arms over the claws of the holder and the arms spring behind the claws. The arms arrestingly engage the claws with their arresting projections provided on their free ends and operating as securing means. Since the arms which must apply the whole arresting force are relatively short in a longitudinal direction, a great deviating angle under consideration of the arresting projections is provided. This arresting angle can be realized only with maintaining of very narrow tolerances both on the holder and on the claws as well as on the securing element, since otherwise there is a danger of breaking the arms. Also, the arms due to their available manufacturing stresses can spread, so that the locking is not sufficient or is not provided at all.
SUMMARY OF THE INVENTION
The wiper blade according to the invention with the characterizing features of the main claim has the advantage over the prior art that the base part can be clamped at the wiper blade in a self-locking manner resulting in a preassembled unit which can easily be connected with the holding clip frame as needed. Owing to the flexible arms of a safety element which is composed of a relatively soft synthetic plastic material, the securing means can easily be guided around the back of the claws then both arms are directly connected with one another by the securing means behind the holding frame or the claw by means of the locking and counterlocking means, so as to provide an especially secure mounting of the wiping strip on the holder. There is no need for special directions for assembling and operating the locking means, since their manner of operation may be understood by observation alone.
Advantageous further developments and improvements of the wiper blade indicated in the main claim are made possible by the steps indicated in the subclaims.
BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment example of the invention is shown in the drawing and explained in more detail in the following description.
FIG. 1 shows a perspective view of a fully assembled wiper blade;
FIG. 2 shows an enlarged partial view of the end portion of a wiper blade as viewed in the direction of arrow II in FIG. 1;
FIG. 3 shows a partial section through the wiper blade according to FIG. 2 along line III--III;
FIG. 4 shows a partial view of two spring bars of the wiper blade;
FIG. 5 is an enlarged view showing a cross section through the wiper blade along line V--V in FIG. 2;
FIG. 6 shows a cross section according to FIG. 5 through a wiping strip of the wilder blade in which are installed the two spring bars according to FIG. 4;
FIG. 7 shows a partial longitudinal section along line VII--VII in FIG. 8 through a securing member belonging to the wiper blade;
FIG. 8 shows a cross section through the securing member according to FIG. 7 along line VIII--VIII;
FIG. 9 shows a partial section through the securing member according to FIG. 7 along line IX--IX;
FIG. 10 shows a partial section through the securing member according to FIG. 7 along line X--X;
FIG. 11 shows a section through the locked securing means along line XI--XI in FIG. 3;
FIG. 12 is an enlarged view of a detail XII in FIG. 11.
DESCRIPTION OF THE PREFERRED EMBODIMENT
At the present time, it is increasingly common to provide so-called refills for wiper blades of the type shown in FIG. 1. These refills are used to replace wiping strips which have been damaged through use. A refill has an elongated wiping strip and spring bars which are accommodated in the wiping strip as pressure distributing means and extend substantially along the entire length of the wiping strip. Further, such refills include at least one securing member which secures the wiping strip on a clip holder. In this way the wiping strip which is held by the claws of the holding cli
REFERENCES:
patent: 3116507 (1964-01-01), Scinta
patent: 3823437 (1974-07-01), Hauke
patent: 3866261 (1975-02-01), Stratton
patent: 4389747 (1983-06-01), Riester
patent: 4993103 (1991-02-01), Takahashi et al.
Bollen Lode
Nys Dirk
Vanroy Jan
Wagner Walter
Graham Gary K.
Robert & Bosch GmbH
Striker Michael J.
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