JPH0533188B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an improvement in an arm-type wiper used for removing raindrops adhering to the front window glass of automobiles, buses, trains, etc.

[Conventional technology]

Arm-type wipers are widely used as devices for removing raindrops from the front windshield of automobiles and the like. There are various conventional arm-type wipers, but all of them have an arm part that is pivoted on the vehicle body and is oscillated by a motor etc. around this pivot point, and a tip of the arm part. It consists of a wiper blade that is supported by a support and swings over the window glass to brush away raindrops.

As shown in FIG. 4, the arm part consists of one arm 2, a support 3 for supporting the wiper blade 4 fixed to the tip of this arm 2, and a third arm. As shown in Fig. 5, a parallel movement mechanism is constructed by two arms 7 and 8 that are pivotally supported on the vehicle body 6 and a connecting piece 9 that connects these arms 7 and 8 and to which the support body 3 is fixed. There are some.

As shown in the figure, such conventional wipers 1 and 5 can wipe off raindrops only in the area in which the wiper blade 4 slides, and the shaded area in the figure remains as an unwiped area 10. Conventionally, therefore, two or three wipers are provided to reduce the unwiped portion 10, but there are still portions where the raindrops cannot be completely removed. (6th
figure).

[Problems to be Solved by the Invention] Therefore, in the arm-type wiper according to the conventional technology, there is a portion left unwiped on the front window glass, which narrows the field of view, and in particular, the left wiped portion at the corner becomes a blind spot when driving. The problem was that it was extremely dangerous.

An object of the present invention is to provide extremely effective means for quickly eliminating the above-mentioned problems.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides a wiper for a vehicle comprising an arm part that is swingable about a pivot point on a vehicle body, and a wiper blade supported at a tip end of the arm part. The wiper blade has an air jet nozzle attached to both ends thereof, and a conduit that guides compressed air from an air compressor provided on the vehicle body to the air jet nozzle, and the air jet nozzle The blowout direction of the compressed air is oriented so that the supplied compressed air is jetted toward the surface of the window glass that is not wiped by the wiper blade.

[Effect]

In the above-mentioned wiper of the present invention, when the wiper blade slides on the window glass to wipe off raindrops, at the same time, the compressed air jetted from the air jet nozzle wipes off the raindrops on the portion of the wiper blade left unwiped, and the window glass is wiped off. Remove raindrops from glass over a wide area.

〔Example〕

Hereinafter, preferred embodiments of the wiper according to the present invention will be described in detail with reference to the drawings.

Note that the same reference numerals will be used to describe parts that are the same as or corresponding to the conventional configuration.

The wiper 11 shown in FIGS. 1 and 2 has an arm portion 12 attached to the vehicle body 6 below the front window glass 21.
two arms 13 and 14 of equal length pivoted to;
These arms 13 and 14 are connected to each other at their tips with a connecting piece 15 that forms a parallel motion mechanism.
The wiper 11 is oscillated by a driving device (not shown) provided therein, and the other arm conduit 14 is made of a hollow pipe and connected to the vehicle body via a universal joint 16. It communicates with an air compressor (not shown) installed in the air compressor 6. A support body (conduit) 17 that supports the wiper blade 4 is also made of a hollow pipe and is integrally attached to the connecting piece 15 via a universal joint 16 so as to communicate with the arm 14 having a hollow structure. It is being Nozzles (air jet nozzles 18 are attached to the openings at both ends of the support 17,
Compressed air from the air compressor flows through this nozzle 1.
8 toward the surface of the window glass 21 that is not wiped by the wiper blade 4 (the unwiped portion 10 shown with diagonal lines in FIGS. 4 to 6).

In the above configuration, when operating the wiper according to the present invention, when the start switch of the wiper 11 is turned on, the arm portion 12 starts to swing, and along with this movement, the wiper blade 4 moves toward the window. It slides on the glass 21 and brushes away raindrops on the sliding surface. Further, at the same time as the start switch is turned on, compressed air is released from the air compressor to the hollow arm 14 and the support 17.
It is ejected from the ejection port 19 of the nozzle 18 through the ejection port 19 of the nozzle 18. The compressed air blown out from the nozzle 18 is applied to the window glass 2 above and below the wiper blade 4.
As the wiper 11 swings, the wiper blade 4
Raindrops can be removed from the window glass 21 above and below the sliding surface.

Note that by making the direction of the ejection port 19 of the nozzle 18 variable or by adjusting the ejection angle of the compressed air, raindrops can be removed within a range desired by the driver. That is, in the embodiment, as can be understood from FIG. 1, compressed air is blown out to the non-wiping surfaces in the upper and lower parts of the window glass 21.
The ejection direction of each nozzle 18 is also set in this manner. However, since non-wiping surfaces also exist on the left and right portions of the window glass 21 (see FIGS. 4 to 6), the ejection direction of each nozzle 18 may be directed toward the left and right portions, and in that case, the present invention also applies. Needless to say, it is included in the scope.

In this embodiment, a hollow pipe is used for the arm portion 12, and this is used as a conduit for compressed air.
As shown in the figure, a similar effect can be obtained by attaching nozzles 18 to both ends of the wiper blade 4 in a wiper with a conventional configuration, and communicating the nozzles 18 and the air compressor through a conduit 20 such as a hose running along the arm. play.

Further, although the arm portion 12 of the wiper 11 in this embodiment is of a type that constitutes a parallel movement mechanism, even if the wiper is of the type shown in FIG. Those skilled in the art will easily understand that the present invention can be applied to the support body 3 having a hollow structure in the same manner as in the above embodiments.

〔Effect of the invention〕

Since the wiper according to the present invention has the above-described structure and function, it can remove raindrops from areas that could not be wiped off with conventional arm-type wipers, providing a sufficiently wide field of view and improving driving safety. The effects that can be achieved are enormous.

Further, a device in which a nozzle and an air compressor are connected through a hose can be easily attached to a conventional wiper.

In particular, since air compressors are mounted on large vehicles such as buses and trucks, trains, etc., the present invention is easy and effective to apply.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the wiper according to the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is an alternative view of the wiper according to the present invention. FIG. 4 and FIG. 5 are front views showing conventional wipers, respectively, and FIG. 6 is a front view showing two wipers of FIG. 5 installed. In the figure, 1, 5, 11: wiper, 2,
7, 8, 13, 14: Arm, 3, 17: Support body, 4: Wiper blade, 6: Vehicle body, 9, 1
5: Connecting piece, 10: Unwiped portion, 12: Arm portion, 16: Universal joint, 18: Nozzle, 19: Spout, 20: Conduit, 21: Window glass.

Claims (1)

[Scope of Claims] 1. A wiper for a vehicle comprising an arm part that is swingable about a pivot point on the vehicle body and a wiper blade supported at the tip of the arm part, in which a wiper blade is provided at both ends of the wiper blade. an air jet nozzle attached thereto, and a conduit for guiding compressed air from an air compressor provided on the vehicle body to the air jet nozzle, the air jet nozzle comprising:
A wiper characterized in that the jetting direction of the compressed air is oriented so that the compressed air supplied through the conduit is jetted toward the surface of the window glass that is not wiped by the wiper blade. 2 The arm portion has a hollow structure, and the conduit for guiding the compressed air is provided in claim 1.
Wiper as described in section. 3. The wiper according to claim 1, wherein the conduit for guiding the compressed air is provided separately from the arm portion.