JP2586964Y2 - Wiper device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a vehicle wiper.
In particular, regarding the wiper device with improved wiping performance,
More particularly, it relates to a wiper device of the type having two wiper blades arranged substantially in parallel.

[0002]

2. Description of the Related Art In order to improve the wiping performance of a wiper device, it has been proposed to provide two wiper blades arranged substantially in parallel and to cover unevenness of wiping by a preceding wiper blade with a succeeding wiper blade. I have.

[0003]

However, in this prior art, since two wiper blades are integrated, there is an error angle when the object to be wiped is, for example, a curved glass on the front of an automobile, or there is a problem in that the wiper blade has a longer length. There is a relative twist in the direction so that the arm pressure concentrates on only one wiper blade and the arm pressure on the other wiper blade decreases or does not work. In a remarkable case, a part or the whole of the other wiper blade floats. There is a problem that the operation state becomes unstable, wiping failure occurs, and chatter occurs. 9 and 10 show a state where excessive arm pressure concentrates on the blade rubber of one of the wiper blades when the error angle exists, and the blade rubber is excessively tilted to cause poor wiping.

An object of the present invention is to solve the above-mentioned problems in the prior art and to provide a wiper device with improved wiping performance.

[0005]

According to the present invention, there is provided a wiper device in which two wiper blades are arranged substantially in parallel, and a connection center of a clip receiving an arm pressure is connected to the clip and each wiper blade. The respective connection centers are displaced in the longitudinal direction of the wiper blade, and the connection center of the clip is located in the middle of the connection center connecting the clip and the respective wiper blade. You.

[0006] It is desirable that the clip receiving the arm pressure be located at the middle of the width direction of each wiper blade.

[0007]

According to the present invention, even if the error angle is large or the blade is twisted in the longitudinal direction, the blade rubbers of the two wiper blades follow the glass surface well, and a stable wiping operation is performed. Can be performed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a top view and a side view of a wiper device shown as an embodiment of the present invention, and FIG. FIG. . The wiper device includes wiper blades 11 and 12 that are arranged at substantially parallel intervals, arm pieces 13 and 14 that are connected to the respective wiper blades 11 and 12, and is disposed between the arm pieces 13 and 14. And a clip holder 15 connected to a wiper arm (not shown). FIG. 3 and FIG.
It is the top view and side view which show 3, 14 and the clip holder 15 in the connection state.

The clip holder 15 and the arm piece 13,
14 are connected by rivets 20, and the wiper blades 11, 12 and the arm pieces 13, 14 are pivotally connected to each other via pins 17, 18 (each shown as an axis).

As shown, a clip 19 connected to the wiper arm is pivotally connected to the clip holder 15 by a pivot pin 16 so that the arm pieces 13, 1
4 between the pivot pin 16 and the pin 1
7 and 18 are displaced in opposite directions in the longitudinal direction of the wiper blade. As a result, substantially identical wiper blades 11, 12 are longitudinally offset and connected to the pins 17, 18 at substantially parallel and equally spaced locations. In the illustrated embodiment, the arm pieces 13 and 14, the clip holder 15 and the clip 19 constitute a clip holder assembly.

Since the arm pieces 13 and 14 are connected to the clip holder 15, respectively, and the wiper blades 11 and 12 receive the force via the pins 17 and 18 connected to the arm pieces 13 and 14, each wiper blade is moved from the wiper arm. It receives the transmitted arm pressure independently, always takes the optimum position, and operates similarly to the case where each wiper blade is independently connected to the wiper arm even if the curvature of the glass surface to be wiped changes. , 2 of the prior art
In a wiper device having two wiper blades, a phenomenon in which only one blade rubber acts is prevented, and each wiper blade takes an optimal posture. This state is schematically shown in FIGS. 5, 6, and 7.

In the illustrated embodiment, the wiper blade 1
Although the first and second arm pieces 13 and 14 are connected in a U-hook manner, and the clip 19 and a wiper arm (not shown) are also connected in a U-hook manner, other forms are also possible. Arm piece 1
The reference numerals 3 and 14 indicate that the bent plate-shaped side plate and the U-hook type bent plate are riveted. However, other types such as an integrated structure may be used.

The two wiper blades 11, 12 are shown as equivalent, and the position of the pins 17, 18 is in the middle of the length of the wiper blades 11, 12, so that both ends of the wiper blades 11, 12 Although the position is shown as being deviated in the longitudinal direction, the present invention is not limited to this, and the positions of the pins 17 and 18 are deviated from the center position of the length of the wiper blades 11 and 12. Figure 1
The two wiper blades 11 and 12 are of different types, and the pin 1
By changing the distance between the pivot pins 7 and 18 and the pivot pin 16, the arm pressure transmitted to each wiper blade can be appropriately determined.

[0014]

According to the present invention, even when the error angle is large or the blade is twisted in the longitudinal direction, the blade rubbers of the two wiper blades follow the glass surface well and are stable. A wiping operation can be performed.

[Brief description of the drawings]

FIG. 1 is a top view and a side view of a wiper device according to an embodiment of the present invention.

FIG. 2 is an enlarged top view and a side view showing a central portion of the wiper device of FIG. 1;

FIG. 3 is a top view showing a clip holder assembly of the wiper device of FIG. 1, that is, a clip and two arm pieces in a connected state;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a view similar to FIG. 4, but also shows a side view schematically illustrating a state of a blade rubber of each wiper blade at this time.

FIG. 6 is a view similar to FIG. 5, but showing a state following a difference in the height position of the glass surface.

FIG. 7 is a diagram equivalent to FIG. 6;

FIG. 8 is a side view schematically illustrating the operation of two blade rubbers of a conventional wiper device.

FIG. 9 is a schematic side view similar to FIG. 8, but schematically illustrating a state in which only one blade rubber acts.

FIG. 10 is a schematic diagram similar to FIG. 9;

[Explanation of symbols]

 Reference Signs List 11 first wiper blade 12 second wiper blade 13 arm piece 14 arm piece 15 clip holder 16 pivot pin (connection center) 17 pin (connection center) 18 pin (connection center) 19 clip 20 rivet

Claims (2)

(57) [Scope of request for utility model registration] A wiper device in which two wiper blades are arranged substantially in parallel, and a clip (1) receiving an arm pressure is provided.
9) and respective connection centers (17, 17) connecting the clip to the respective wiper blades.
18) are displaced in the longitudinal direction of the wiper blade,
A wiper device characterized in that the connection center (16) of the clip is located in the middle of the connection centers (17, 18) connecting the clip and the respective wiper blades. 2. The wiper device according to claim 1, wherein the clip receiving the arm pressure is located in the middle of the width direction of each wiper blade.