JPH08310352A - Wiper blade for automobile - Google Patents

Abstract

PURPOSE: To improve workability in positioning of a wiper blade in the longitudinal direction by engaging a claw in a secondary lever or a yoke lever with a locking hole arranged in one end of a blade rubber. CONSTITUTION: Locking holes 26 formed on both sides of one end in the longitudinal direction in a blade rubber 20 are offset by each other in the longitudinal direction of the blade rubber 20, while notch parts 27 are arranged in the upper parts of the respective locking holes 26, and a claw 18 arranged in the end part of a secondary lever 13 or a yoke lever is engaged with these locking holes 26, so that installation of the blade rubber 20 can be carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile wiper blade, and more particularly to an automobile wiper blade in which a blade rubber is supported by a primary lever via a secondary lever or a yoke lever attached to the secondary lever.

[0002]

2. Description of the Related Art A wiper blade is attached to a windshield of an automobile in order to obtain a forward visibility when traveling in the rain. By moving a blade rubber of the wiper blade along the surface of the windshield, I try to wipe the raindrops on the surface of the windshield.

In a conventional automobile wiper blade, a secondary lever is rotatably attached to both ends of a primary lever, and a claw of the secondary lever or a claw of a yoke lever rotatably attached to the secondary lever is provided. The blade rubber is locked in locking grooves provided on both sides along the length direction of the blade rubber so that the blade rubber is supported by the primary lever via the secondary lever or the yoke lever.

If all the claws of the secondary lever or the yoke lever are locked by the locking grooves, the blade rubber may come off when the blade rubber moves in the length direction. Therefore, conventionally, as shown in FIGS. 6 and 7, a locking hole 3 is formed at each of extended positions of the locking groove 2 of the blade rubber 1 and on both sides of one end in the length direction of the blade rubber 1, By engaging the claw 5 on one end side of the secondary lever 4 with the locking hole 3, the blade rubber 1 is prevented from moving in the lengthwise direction and coming off.

[0005]

When mounting the blade rubber 1 as described above, the claws 5 of the secondary lever 4 are sequentially inserted into the engaging grooves 2 on both sides of the blade rubber 1 so that the blade rubber 1 can be inserted. Only the claw 5 on one end side of the blade rubber 1 is inserted into the locking hole 3 so that the blade rubber 1 is positioned in the longitudinal direction.

In particular, when the pawl 5 is inserted into the locking hole 3 at this time, the elastic deformation of the blade rubber 1 is utilized. In FIG. 7, the pawl 5 is inserted while being deformed from above the blade rubber 1. I am trying to do it. Therefore, when the blade rubber 1 is hard and is not easily elastically deformed at a low temperature, it is necessary to deform the blade rubber 1 with a large force to introduce the claw 5 into the locking hole 3.
There is a problem that the replacement work is difficult.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle wiper blade in which the workability of replacing the blade rubber is improved.

[0008]

According to the present invention, a claw of a secondary lever directly attached to a primary lever or a claw of a yoke lever attached via the secondary lever is extended to both sides of a blade rubber in a longitudinal direction. A claw of a secondary lever or a yoke lever that engages with a formed locking groove and that corresponds to a locking hole provided at an extension position of the locking groove at one end in the length direction of the blade rubber In a wiper blade for an automobile in which the blade rubber is supported by a primary lever, locking holes provided on both sides of one end of the blade rubber are offset from each other with respect to the length direction of the blade rubber. The blade rubber at the upper part of the locking hole. It relates automotive wiper blades, characterized in that the.

[0009]

Operation: The claw of the secondary lever directly attached to the primary lever or the claw of the yoke lever attached via the secondary lever is engaged with the engagement grooves formed on both sides of the blade rubber and extending in the longitudinal direction. At the same time, the blade rubber is attached by introducing claws corresponding to one end in the length direction of the blade rubber into the corresponding locking holes from both sides of the blade rubber along the lacking portion of the blade rubber and engaging them.

[0010]

1 shows a wiper blade for an automobile according to an embodiment of the present invention. The wiper blade includes a primary lever 10 formed by pressing a steel plate. A connecting pin 11 is attached to an intermediate position in the lengthwise direction of the primary lever 10 and is rotatably attached to the wiper arm by the connecting pin 11. A secondary lever 13 is rotatably attached to both ends of the primary lever 10 in the longitudinal direction via connecting pins 12.

One end of the secondary lever 13 is connected to the yoke lever 15 via a connecting pin 14. Claws 16 are provided on both ends of the yoke lever 15 respectively.
Is provided. On the other hand, the secondary lever 1
The claw 18 is directly provided at the end opposite to the part where the connecting pin 14 of No. 3 is provided.

Next, the blade rubber 2 supported by the secondary lever 13 or the yoke lever 15 is used.
0, the blade rubber 20 has slit-shaped grooves 21 formed on both sides thereof along the length direction as shown in FIGS. 2 and 3. The backing plate 22 is inserted. The locking groove 2 is provided below the slit-shaped groove 21 and on both sides of the blade rubber 20 in the width direction.
3 is provided. The claw 16 of the yoke lever 15 and the claw 18 at the left end of the secondary lever 13 on the left side in FIG. 1 are received in the locking groove 23.

On the other hand, in order to receive the claw 18 provided at the right end of the rightmost secondary lever 13 in FIG. 1, the corresponding portion of the blade rubber 20 is shown in FIG.
And as shown in FIG.
Is provided. Secondary lever 1 at the right end in Fig. 1
By engaging the claw 18 of No. 3 with this locking hole 26,
The blade rubber 20 is prevented from moving and falling off in the lengthwise direction, and the locking hole 26 is used to position the blade rubber 20 in the lengthwise direction.

Locking holes 26 provided on both sides of one end in the length direction of the blade rubber 20 and these locking holes 2
As shown in FIGS. 2 and 3, the claws of the secondary lever 13 that is locked to the 6 are offset from each other in the length direction of the blade rubber 20, and the positions of the claws 18 and the locking holes 26 on both sides are displaced from each other. ing. Corresponding to such a locking hole 26, a notch portion 27 is continuously provided above the locking groove 23 in the extension of the slit-shaped groove 21, and the claw 18 is engaged by the notch portion 27. Stop hole 26
So that it can be easily inserted.

That is, as shown in FIG. 4, the left claw 18
Since the cutout portion 27 is formed in the upper portion of the locking hole 26 into which is inserted, the blade rubber 20 must be deformed by the cutout portion 27 when the left claw 18 is inserted into the locking hole 26. The area that does not become small is reduced, and the claw 18 can be easily inserted into the locking hole 26 with a small force. Similarly, with respect to the right side claw 18, as shown in FIG.
The claw 18 can be easily inserted into the corresponding locking hole 26 with a small force.

As described above, the automobile wiper blade according to the present embodiment has the secondary lever 1 on the right side in FIG.
Claw 18 at the right end of 3 and locking hole 26 into which claw 18 is inserted
Are offset from each other on both sides of the blade rubber 20, and a notch 27 is formed in the upper portion of the locking hole 26.

Therefore, the blade rubber 20 is easily deformed when the pawl 18 is inserted into the locking hole 26. Therefore, even in the winter when the temperature is low, the blade rubber 20 can be easily replaced even when the blade rubber 20 is difficult to be deformed. Further, since the locking holes 26 and the lacking portions 27 on both sides of the blade rubber 20 are displaced from each other with respect to the length direction of the blade rubber 20, the blade rubber 20 once attached does not move in the vertical direction in FIGS. 4 and 5. The force will prevent it from falling off easily.

[0018]

As described above, according to the present invention, the locking holes provided on both sides of one end of the blade rubber are offset from each other with respect to the length direction of the blade rubber.
The blade rubber is provided with a notch above the locking hole.

Therefore, it becomes possible to reduce the force required for the deformation of the rubber when the pawl is engaged with the locking hole due to the lacking portion, and the workability of replacing the blade rubber can be improved. Moreover, since the locking holes are offset from each other in the lengthwise direction of the blade rubber, the blade rubber once mounted is reliably prevented from falling off due to the force in the mounting direction of the claw.

[Brief description of drawings]

FIG. 1 is a front view of an automobile wiper blade according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part at the same end.

FIG. 3 is a perspective view of a main part viewed from the opposite side of the same end.

FIG. 4 is a vertical cross-sectional view of an engaging portion of a left engaging claw.

FIG. 5 is a vertical cross-sectional view of an engaging portion of a right locking claw.

FIG. 6 is an external perspective view of an end portion of a conventional wiper blade.

FIG. 7 is a vertical sectional view of the same.

[Explanation of symbols]

 10 Primary Lever 11, 12 Connecting Pin 13 Secondary Lever 14 Connecting Pin 15 Yoke Lever 16 Claw 18 Claw 20 Blade Rubber 21 Slit-like Groove 22 Backing Plate 23 Locking Groove 26 Locking Hole 27 Missing Part

Claims (1)

[Claims] 1. A locking groove formed by extending a claw of a secondary lever directly attached to a primary lever or a claw of a yoke lever attached via the secondary lever, extending on both sides of a blade rubber in a longitudinal direction. While engaging, the blade rubber is engaged by engaging the claw of the secondary lever or the yoke lever corresponding to the locking hole provided at the extension position of the locking groove at one end in the length direction of the blade rubber. In an automotive wiper blade supported by a primary lever, locking holes provided on both sides of one end of the blade rubber are offset from each other in the length direction of the blade rubber, and An automobile characterized in that the blade rubber is provided with a lacking portion in the upper portion. Wiper blade for.