JPH0134917Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention provides a wiper blade for a vehicle in which a clip for connecting a wiper arm is pivotally connected, and the wiper blade is connected to the wiper arm through the connecting clip. The present invention relates to an improvement in a vehicle wiper blade mounting device suitable for preventing rattling.

(Prior Art) Conventional structures of the clip portion for connecting the wiper arm of a wiper blade for a vehicle include those shown in FIGS. 3 to 6, for example.

That is, the vehicle wiper blade 1 shown in FIGS. 3 and 4 includes a yoke (not shown), a yoke connection lever, and an elongated blade lever 2,
The blade lever 2 is rotated via a pivot pin 3 provided between the both side walls 2a and 2b within an opening 2c formed in the lever back part, leaving a pair of opposing side walls 2a and 2b at the approximate center of the blade lever 2. The blade lever 2 and the wiper arm 5 can be connected to each other via the connecting clip 4, which is pivotally attached to the blade lever 2.

The connecting clip 4 is connected to the U-shaped portion 6.
Wiper arm guide protrusions 7a and 7b for positioning the wiper arm 5 are provided at both ends of the U-shaped portion 6, respectively, as shown in FIG. character shape part 6
has a tip U formed at the tip of the wiper arm 5.
The wiper arm can be positioned by the wiper arm guide protrusions 7a and 7b in a state where the bent portion 5a is fitted. Also, the U of the connecting clip 4
The end of the U-shaped bent side of the U-shaped portion 6 has a shaft fitting portion 4a that fits into the pivot pin 3 from the side (above in FIG. 4) and allows the pivot pin 3 to rotate freely. U-shaped part 6
One piece 6a forming the U-shaped portion 6 is in close contact with the wiper arm 5 almost entirely.
The other piece 6b forming the
As shown in the figure, an elastic tongue piece 8 is formed with a locking protrusion 8a for locking with a locking recess 5b provided on the tip U-shaped bent portion 5a of the wiper arm 5. In the free state, the piece 8 is located below the U-shaped portion 6, as shown by the imaginary line in FIG. Further, a tongue operating portion 8b is formed at the tip of the elastic tongue 8.

Therefore, as shown in FIG. 4, when assembling the wiper blade 1 and wiper arm 5, first, the opposite side walls 2a and 2b of the wiper blade 1 are assembled.
After fitting the shaft fitting part 4a formed on the connecting clip 4 from above the pivot pin 3 provided in between, the tip U-shaped bent part 5a formed on the wiper arm 5 is connected from the pivot pin 3 side. U-shaped part 6 of clip 4
By fitting into the connecting clip 4, the locking convex portion 8a formed on the elastic tongue piece 8 of the connecting clip 4 and the locking recess 5b formed on the tip U bent portion 5a of the wiper arm 5 are locked, Thereby, the wiper blade 1 and the wiper arm 5 are rotatably connected.

However, as shown in FIG. 6, the inner width between the side walls 2a and 2b of the blade lever 2, the outer width and inner width of the connecting clip 4, the outer width of the tip U-bent portion 5a of the wiper arm 5, etc. There are dimensional tolerances caused by manufacturing technology, and depending on the accumulation of dimensional tolerances, there is no flexibility in the width of the U-shaped portion 6 of the connecting clip 4 and the guide protrusions 7a, 7b, so the wiper arm It may become difficult to fit the U-bent portion 5a of the blade lever 2 into the connecting clip, or a gap may occur between the inner surfaces of the side walls 2a, 2b of the blade lever 2 and the outer wall surface of the connecting clip 4, and the Wiper blade 1 and the wiper arm 5
The wiper blade 1 may not be able to cleanly wipe away raindrops on the vehicle glass surface, and may cause abnormal noise and deteriorated durability. .

(Purpose of the invention) This invention was made by focusing on the above-mentioned drawbacks of the prior art.Dimension tolerances caused by manufacturing technology in the blade lever of the wiper blade, the connecting clip, and the U-shaped bent portion at the tip of the wiper arm To provide a wiper blade that can prevent difficulty in assembling the connecting clip on the wiper blade side and the wiper arm and prevent rattling between the wiper blade and the wiper arm even if the wiper blade is is intended to provide.

(Structure of the invention) The vehicle wiper blade mounting device according to this invention pivots a connecting clip provided with wiper arm guide protrusions at both ends of a U-shaped portion to the opposing side walls of a blade lever, and In a vehicle wiper blade in which a U-shaped bent portion at the tip of a wiper arm can be fitted into a U-shaped portion of a clip, a slit is provided in the U-shaped portion of the connecting clip to adjust the interval between the wiper arm guide protrusions. It is characterized by the formation of

(Example) This invention will be explained below based on the drawings.

FIGS. 1 and 2 are diagrams illustrating an embodiment of this invention. (However, the same reference numerals are attached to the same structural parts as those of the prior art shown in FIGS. 3 to 6.) That is, the vehicle wiper blade 11 shown in FIGS. 1 and 2 includes a yoke (not shown), Yoke connection lever and long blade lever 2
and via a pivot pin 3 provided between the both side walls 2a, 2b in an opening 2c formed in the lever back, leaving a pair of opposing side walls 2a, 2b in the approximate center of the blade lever 2. The blade lever 2 and the wiper arm 5 can be connected to each other via the connecting clip 14, which is rotatably mounted.

The connecting clip 14 has a U-shaped portion 16, and wiper arm guide protrusions 7a and 7b for positioning the wiper arm 5 are provided at both ends of the U-shaped portion 16, respectively. As shown in FIG. 2, an elastic tongue piece is provided on the lower surface 16b of the U-shaped portion 16 with a locking protrusion 8a for locking the tip U-shaped bent portion 5a of the wiper arm 5. 8 is formed, and
In order to provide flexibility in the width direction of the connecting clip 14 on the upper surface portion 16a and to adjust the distance between the wiper arm guide protrusions 7a and 7b, as shown in FIG. 1 and FIG. like,
Slits 18a and 18b are formed from the right end surface of the upper surface portion 16a in FIG. 1 to approximately the center thereof.

Therefore, using the connecting clip 14 having the above configuration, the tip U-shaped bent portion 5a of the wiper arm 5 is fitted into the U-shaped portion 16 of the connecting clip 14 in the same manner as in the prior art. By assembling the wiper blade 11 and the wiper arm 5 via the wiper arm guide protrusions 7a and 7b as shown in FIG. 2, the initial purpose of loosening between the wiper blade 11 and the wiper arm 5 is eliminated. You can get rid of stickiness.

Here, in the above-mentioned embodiment, except for the structure of the upper surface part 16a of the U-shaped part 16, the structure is the same as that of the conventional one. The portions corresponding to the slits 18a and 18b are formed in a slightly narrower fit, and the portion corresponding to the pivot pin 3 is formed in the wiper arm 5.
The tip bent portion 5a is formed to a size that makes it easy to fit,
With the connecting clip 14 pivotally attached to the pivot pin 3, the distance between the wiper arm guide protrusions 7a and 7b is made slightly narrower, and the tip U-bent portion 5a of the wiper arm 5 is connected to the U-shaped portion 16 of the connecting clip 14.
When the wiper arm guide protrusions 7a, 7b are fitted together, the distance between the wiper arm guide protrusions 7a, 7b and the side walls 2a,
If you set the distance between 2b to be slightly larger,
The wiper arm 5 can be easily fitted into the connecting clip 14, and at the same time, rattling between the wiper arm 5, the connecting clip 14, and the wiper blade 11 is eliminated.

Note that the slits 18a and 18b formed in the upper surface part 16a of the U-shaped part 16 are connected to the connecting clip 1.
It is possible to change the number and size depending on the usage condition of 4.

(Effects of the invention) As explained above, this invention pivots a connecting clip provided with wiper arm guide protrusions at both ends of a U-shaped portion to the opposing side walls of the blade lever, and In a vehicle wiper blade in which a U-shaped bent portion at the tip of a wiper arm can be fitted into a U-shaped portion of a clip, a slit is provided in the U-shaped portion of the connecting clip to adjust the interval between the wiper arm guide protrusions. Even if there is a dimensional error due to manufacturing technology in the wiper blade, the connecting clip pivotally attached to the wiper blade, or the U-shaped bent portion at the tip of the wiper arm, the connecting clip will not be damaged in the width direction. Since the wiper blade has flexibility, it has an extremely excellent effect of being able to eliminate rattling caused by the above-mentioned dimensional error between the wiper blade and the wiper arm.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the pivot portion of a connecting clip for a vehicle wiper blade according to an embodiment of the invention;
Fig. 2 is a cross-sectional view of the connecting clip shown in Fig. 1, Fig. 3 is a plan view of the pivoting portion of the connecting clip of a conventional wiper blade for a vehicle, and Fig. 4 is the connection pivoted to the wiper blade. A in Figure 3 shows the state in which the U-bent portion of the wiper arm is fitted into the clip.
5 is a bottom view of a conventional connecting clip, and FIG. 6 is a sectional view taken along line B-B in FIG. 4.

Claims (1)

[Scope of utility model registration request] A connecting clip having wiper arm guide protrusions on both ends of the U-shaped portion is pivotally attached to the opposing side walls of the blade lever, and a U-shaped bent portion at the tip of the wiper arm is attached to the U-shaped portion of the connecting clip. 1. A vehicle wiper blade attachment device which is capable of being fitted, wherein a slit is formed in the U-shaped portion of the connecting clip to adjust the interval between the wiper arm guide protrusions.