JPH08133025A - Wiper blade - Google Patents

Abstract

PURPOSE: To prevent soil, dust, snow, etc., from entering into a clearance between the outside yoke members and a spacer in a yoke member coupling part and prevent failure due to freezing so as to expose the end part of the outside yoke member. CONSTITUTION: A wiper blade is so formed that an elastic part 7a which extends in the diagonally upward from the top wall in the end sides incorporated in the outside yoke member 2 of a spacer 7, which is arranged in a coupling part for coupling yoke members 2, 3 each other, and is elastically deformed in the height direction is provided in a wiper blade having two or more yoke members which are pivotally connected one another.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle wiper blade, and more particularly to a vehicle wiper blade having two or more yoke members pivotally connected to each other, and a novel yoke member connecting device for connecting the yoke members to each other. Regarding wiper blade.

[0002]

2. Description of the Related Art FIG. 5 is a schematic side view of an example of a conventional vehicle wiper blade, in which yoke members 3 and 3 are provided with rivets 4 and 4 at both ends of a yoke member 2 connected to a wiper arm 1 showing only a tip portion thereof. And the blade rubber 5 is supported by the yoke members 3 and 3.

FIG. 4 is a sectional view of the pivot connecting portion of FIG. 5, in which a spacer 6 having a flat side wall is arranged between the yoke member 2 and the yoke member 3, and these are pivotally connected by a rivet 4. . The spacer 6 is located between the yoke members 2 and 3 to absorb an excessive play (lateral direction, that is, the axial direction of the rivet 4) and to reduce friction during pivotal movement. A gap is provided between the spacer 6 and the yoke member 3 in the up-down direction as shown in order to enable relative pivotal movement of the yoke members 2 and 3.

[0004]

However, in the conventional structure as shown in FIG. 4, due to the manufacturing tolerance of the yoke member 2 and the spacer 6, the inner surface of the top wall of the yoke member 2 and the outer surface of the top wall of the spacer 6 are separated from each other. There is a tendency for play to occur and the spacer 6 tends to make unspecific rotation around the rivet 4. In particular, in the case of the state of FIG. 3, there are phenomena such as dirt, dust, snow, and other scattered materials entering the area A, and the entering water is frozen in winter,
There is a problem that the freedom of rotation of the yoke member 3 is lost, wiping failure occurs, and the end portion of the yoke member 2 is not covered with the spacer 6 and becomes dangerous.

If the clearance in the height direction is increased in order to secure the freedom of rotation of the yoke member 3, the overall height of the wiper blade becomes high, which is unsuitable for a vehicle of the full shield type. If the spacer protrusion B is enlarged so that the end of the yoke member 2 is sufficiently covered with the spacer 6, the protrusion B becomes a dangerous protrusion when the spacer 6 rotates counterclockwise in FIG.

An object of the present invention is to obtain a new vehicle wiper blade that solves the above-mentioned problems in the prior art.

[0007]

According to the present invention, in a vehicle wiper blade having two or more yoke members pivotally connected to each other, an outer yoke of a spacer arranged at a connecting portion connecting the yoke members to each other. Provided is a wiper blade for a vehicle, in which an elastic portion that extends obliquely upward and is elastically deformable in the height direction is provided on a top wall on the end side included in a member.

[0008]

According to the present invention, the gap between the spacer and the outer yoke member can be kept to a minimum on the side opposite to the end portion side included in the outer yoke member, that is, on the end portion side of the outer yoke member. The entry of foreign matter can be minimized, the degree of freedom of rotation of the yoke member 3 is guaranteed, the occurrence of defective wiping is prevented, and the problem that the tip end portion of the yoke member 2 is projected is prevented.

[0009]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a partial exploded perspective view of a yoke member connecting portion of a wiper blade shown as an embodiment of the present invention. 3 and rivet 4 are equivalent to those shown in FIG.

In FIG. 1, between the yoke members 2 and 3,
The spacer 7 is arranged. An elastic portion 7a is provided on the side of the spacer 7 that is included in the yoke member 2, that is, on the top wall at the right end in FIG.

FIG. 2 is a central cross-sectional view of the assembled yoke members 2, 3, the spacer 7 and the rivet 4, with the elastic portion 7a of the spacer 7 elastically contacting the inner surface of the top wall of the yoke member 2. , The spacer 7 is pressed clockwise in FIG. The gap between the yoke member 2 and the spacer 7 at the tip end side of the yoke member 2, that is, the end portion on the left side in FIG. 2, that is, the gap at the portion A in FIG. It is possible to reliably prevent the intrusion between the yoke members 2 and 3 and to achieve a reliable operation between the yoke members 2 and 3.

In the embodiment shown in FIGS. 1 and 2, the elastic portion 7a is provided integrally with the spacer 7, but it may be a separate member.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be implemented. For example, in FIG.
Although a wiper blade composed of three yoke members has been shown as the prior art, the same can be applied to a wiper blade composed of a larger number of yoke members.

[0014]

According to the present invention, the manufacturing tolerance of the yoke members pivotally connected to each other is not so high,
Since the clearance between the end of the outer yoke member and the spacer can be reduced to zero, dirt, dust, snow, etc. can be reliably prevented, and icing in the winter season can be reliably prevented. The problem in the device can be reliably solved.

Since it is not necessary to make the clearance in the height direction excessively large, the overall height of the wiper blade can be reduced, and a wiper blade suitable for use in a vehicle of the conshield type can be obtained.

This effect is particularly remarkable in the case of a long wiper blade composed of a large number of yoke members.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view of a yoke member connecting portion of a wiper blade according to an exemplary embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a yoke member connecting portion according to the embodiment of FIG.

FIG. 3 is a vertical cross-sectional view of a yoke member connecting portion of a conventional wiper blade.

FIG. 4 is a cross-sectional view of a yoke member connecting portion of a conventional wiper blade.

FIG. 5 is a side view showing an example of a wiper blade with the base of the wiper arm omitted.

[Explanation of symbols]

 2, 3 Yoke member 6 Conventional spacer 7 Spacer 7a of the present invention Elastic portion

Claims (2)

[Claims] 1. A wiper blade having two or more yoke members pivotally connected to each other, wherein a top wall on the side of an end included in an outer yoke member of a spacer arranged at a connecting portion connecting the yoke members to each other. A wiper blade extending obliquely upward and provided with an elastic portion that is elastically deformable in the height direction. 2. The wiper blade according to claim 1, wherein the elastic portion is integrally provided on the spacer.