JPS5942290Y2 - snow wiper blade - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a snow wiper blade for an automobile used in snowy areas.

In general, when it snows on automobile wipers that are exposed outside the vehicle, snow accumulates on the blade body, especially on the stays, or this snow freezes and takes away the flexibility necessary for wiper operation, causing problems in wiper operation. There is a point where you are forced to do something.

For this reason, snow wiper blades were used that covered each exposed stay with a rubber cover to prevent snow from accumulating at the joints of each stay.

However, in the conventional snow wiper blade 1, as shown in FIGS. 1 to 3, the stay 23°24.25 that holds the rubber ribbon 21 of the blade body 2 is brought into almost close contact with the rubber cover 3. As a result, when the snow wiper blade 1 is operated on the curved windshield surface 4, the tip a of the blade body 2 cannot fully follow the curved surface of the windshield surface 4 and rises above the windshield surface 4. There were some unwiped areas as shown in the shaded area in FIG.

This means that when the stay 23924925 tries to follow the window glass surface 4, the stay 23.24.25
The connecting portion abuts against the inner surface of the rubber cover 3, and the elasticity of the rubber cover 3 acts to restore and tighten the rubber cover 3 to its original state, and the tip portion a of the blade body 2 also separates from the windshield surface 4. This is to make it act in the direction.

In addition, in order to eliminate such drawbacks, the rubber cover 3
is formed to a size relative to the stay 23.24.25 portion of the blade body 2, so that the connecting portion of the stay 23.24.25 does not come into contact with the rubber cover, and the restoring force of the rubber cover is also reduced by the stay 23.24. .25 was considered to have a relatively low effect, but in this way, when the car was running at high speed, the rubber cover 3 would be hit by high-speed airflow, causing the entire blade body 2 to lift or sag. Not only does the rubber cover 3 come into contact with the windshield surface 4, which deteriorates the wiping performance, but it is also unfavorable from the viewpoint of material removal and aesthetics.

In view of the above circumstances, the present invention eliminates the drawbacks of the conventional snow wiper blade as described above, and makes it possible to cover the stay part of the blade body with a rubber cover of a size that is almost in close contact with the stay. Moreover, it is an object of the present invention to provide a snow wiper blade that has excellent followability of the blade body to the windshield surface.

An example of implementing the present invention will be described below with reference to the drawings.

Fig. 4 is an overall schematic diagram of the snow wiper blade of the present invention, Fig. 5 is a longitudinal cross-sectional view of the main part, Fig. 6, Fig. 7, and Fig. 8 are respectively AA, B-B of Fig. It is a CC sectional view.

FIG. 9 is a sectional view taken along the line D-D in FIG. 4, and FIG. 10 is an explanatory diagram showing the ability of the snow wiper blade of the present invention to follow the windshield surface.

The snow wiper blade 1 of the present invention is composed of a blade body 2 and a rubber cover 3 covering the blade body 2.

The blade body 2 includes a rubber ribbon 21 for wiping the window glass surface 4, a ribbon holder 22 disposed in a side groove 211 of the rubber ribbon 21 and imparting rigidity to the rubber ribbon 21, and the ribbon holder 2.
2, the sub-stay 23 holds the longitudinal end of the rubber ribbon 21 with a claw 231, and the sub-stay 23 is rotatably supported at the center of the -4V sub-stay 23, and the other side is supported approximately at the center of the rubber ribbon 21 with a claw 241. The main stay 25 has one end rotatably supported at the center of the sub-stay 24 and has a holder 5 at the center which is a connecting part to the arm I. There is.

That is, the force from the arm that presses the snow wiper blade 1 against the windshield 4 is applied to the central part of the main stay 25 by the holder 5, and
The rubber ribbon 21 is distributed in the longitudinal direction of the blade body, and the rubber ribbon 21 is evenly pressed against the window glass 4.

The rubber cover 3 is made of an elastic material as a whole, for example, -rm material.

As is clear from FIGS. 5 to 8, the main body portion 31 of the rubber cover 3 has an opening 32 at the bottom, which houses the main stay 25 and sub-stays 24, 23, and has a hem 33. It is held in the concave groove 211 of the rubber ribbon 21 and is hooked thereon.

Stoppers 35 are attached to the openings 34 at both ends.

In addition, the stopper 35 and the longitudinal opening 34 of the main body=tx portion 31 are completely sealed by bonding the entire circumference with an adhesive or the like.

Then, the substay 23 of the main body portion 31 of the rubber cover 3
A telescopic portion 6, that is, a bellows 36 is formed at a position corresponding to the connecting portion of the substay 24.

The bellows 36 is formed from the upper surface of the rubber cover to both left and right side surfaces in a direction substantially perpendicular to the longitudinal direction.

In the illustrated example, the bellows 36 is formed at a position that communicates with the connecting portion between the sub-stays 23 and 24, but it can be further improved if an elastic portion is also formed at the connecting portion between the sub-stay 24 and the main stay 25. The followability of the blade body 2 to the window glass surface 4 is improved.

The rubber cover 3 configured as described above has a rubber ribbon 2
The sub-stay 23 holding the rubber ribbon 1, the sub-stay 24 and the main stay 25 are enclosed, the hem 33 is held in the concave groove 211 of the rubber ribbon 21, and both ends are attached to the stopper 3.
By being hooked at 5, it is attached to the rubber ribbon 21, and together with the blade body 2, constitutes the snow wiper blade 1.

The holder 5 is attached to the main stay 2 from the outside of the rubber cover 3.
It is rotatably supported in the center of 5.

Since the snow wiper blade 1 of the present invention is configured as described above, when a force is applied to the blade body through the arm 1 to press the snow wiper blade 1 against the windshield 4, the blade body 2 The sub-stay 23 that applies a partial pressure to the longitudinal end portion follows the curved surface of the window glass 4 centering on the pivot portion with the sub-stay 24 .

Along with this, the rubber cover 3 follows in the same manner.

In other words, at this time, since the elastic part 6, that is, the bellows 36 is formed in the position corresponding to the shaft support part of the rubber cover 3, extending from the upper surface of the rubber cover to both left and right sides in a direction substantially perpendicular to the longitudinal direction. The bellows 36 extends on the upper surface of the rubber cover while contracting at the bottom of both sides to follow the rotation of the sub-stay 23, and the elasticity of the rubber cover 3 allows the blade body to follow the windshield surface. It does not act as a restoring force, and the blade body 2 can be made to sufficiently follow the window glass surface 4.

Incidentally, instead of forming the elastic portion 6 in a bellows shape as shown in FIG. 9, it is also possible to form curved surface irregularities 37 as shown in FIG. 11.

As mentioned above, the snow wiper blade of the present invention is
Since we used a rubber cover in which an elastic part 6 extending from the upper surface to the side surface at a position corresponding to the connecting part between the stays and extending approximately perpendicular to the longitudinal direction was formed, the rubber cover 3 was attached to each stay 23, 24, 25. Even if the rubber cutter 3 is formed so thin that it comes into close contact with the window glass surface 4, the rubber cutter 3 will expand and contract freely as the stay 23, 24, 25 follows the windshield surface 4, and the blade body 2 will be attached to the windshield surface by the rubber cover 3. 4
(Therefore, the rubber cover 3 itself has good wiping performance without leaving any unwiped areas like the diagonal lines in FIG. 3 on the windshield surface 4. Similarly, since it can be formed extremely thin, the blade body 2 does not lift up from the windshield surface 4 when the car is running at high speed and deteriorate the wiping performance, and is also excellent in terms of material removal and aesthetics. Snow wiper blades can be provided.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional snow wiper blade with two parts omitted, Figure 2 is an explanatory diagram showing how the conventional snow wiper blade follows the windshield surface, and Figure 3 is an illustration of the same snow wiper blade. It is a state diagram showing the state of wiping on the windshield surface. Fig. 4 is an overall schematic diagram of the snow wiper blade of the present invention in a smaller size, Fig. 5 is a sectional view of the same part, Fig. 6, Fig. 1, and Fig. 8 are the AA cross section of Fig. 5, and B-B. Cross section, C-C
It is an m-plane view. Fig. 9 is a sectional view taken along the line DD in Fig. 4, Fig. 10 is an explanatory diagram showing the ability of the snow wiper of the present invention to follow the windshield glass surface, and Fig. 11 shows another example of the telescopic part. D-
It is a view corresponding to the D cross section. 2... Blade body, 3... Rubber cover, 4... Windshield surface, 5... Holder, 6... Telescopic part,
36... bellows.

Claims (1)

[Scope of utility model registration request] A snow wiper blade comprising a blade body including a rubber ribbon, a ribbon holder that carries the rubber ribbon, a stay that holds the rubber ribbon via the ribbon holder, and a rubber cover that covers the blade body, The stay includes a pump stay that holds a rubber ribbon, and a main stay that distributes pressure to the pump stay, and a rubber cover that covers the blade body has a position corresponding to a connecting portion between the stays. A snow white blade characterized in that an extendable part extending from the top surface to the side surface and extending substantially orthogonally to the longitudinal direction is provided.