JPS6167650A - Wiper blade - Google Patents

Abstract

PURPOSE:To improve the wiping function of a lip in resilient wiping member irrespectively of the curvature of wiping face by constructing at least a portion of said wiping member contacting with the wiping face with plural lips arranged laterally in parallel. CONSTITUTION:A supporting shaft 3 is projected from the opposite ends in longitudinal direction of holder section 1 to be coupled with wiper arm, and a supporting stay 5 is journaled movably in lateral direction to said shaft 3. While a resilient wiping member 9 is secured through supporting tools to the opposite end sections in longitudinal direction of the supporting stay 5. The wiping member 9 is molded with rubber material and a lip 13 is provided against the base section 11 secured to the supporting tool. Here, the lip 13 is constructed with plural lips arranged laterally and splitted into a center lip 13a in laterally central section and side lips 13b, 13c at the opposite slides in lateral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a wiper blade that comes into contact with and wipes a glass surface such as a windshield of a vehicle.

[Technical Background of the Invention and its Problems 1] As a conventional wiper blade, there is, for example, Japanese Utility Model Application No. 55-157051 shown in FIG. This wiper blade is formed with a pair of lips la and 1b, and is intended to improve the wiping function. But this pair of lips ia, ib
In order to always keep both lips in uniform contact with the glass surface, when the wiper blade comes to the far side of the arm of the wiper blade on a curved glass surface, the lip 1a and lb surfaces are inclined so that the tips of the lip surfaces are always in contact. Therefore, there was a problem in that the tips of both lip surfaces were severely deteriorated. Furthermore, since there are a pair of lips, if one lip is damaged, stripes may be left behind when wiping in one direction, and there is a risk that a sufficient field of view may not be secured.

[Objective of the Invention] This invention was made by focusing on such conventional problems, and its purpose is to improve the wiping function of the lip of the elastic wiping body regardless of the curvature of the glass. Our goal is to provide wiper blades that can

[Summary of the Invention] In order to achieve the above object, the present invention comprises a portion of the elastic wiping body of a wiper blade that contacts the wiping surface with a plurality of lips arranged in the width direction of the elastic wiping body; It consists of a center lip located at the center in the direction and side lips lined up on both sides of the center lip in the width direction.

[Embodiments of the Invention] The present invention will be described below based on the drawings. FIG. 1 shows the wiper blade as a whole, and numeral 1 indicates a holder portion connected to a wiper arm 2. As shown in FIG.

Support shafts 3.3 are protruded from both longitudinal ends of the holder portion 1, and a support stay 5 is movable in the width direction of the wiper blade relative to the support shafts 3.3 as shown in FIG. It is freely supported. This support stay 5 is bent into a substantially mountain shape, and supports 7, 7 are pivotally attached to both ends in the longitudinal direction, respectively. And these supports 7, 7
One elastic wiping body 9 is clamped and fixed to the holder, and this elastic wiping body 9 comes into contact with and wipes a glass surface 15 as a wiping surface.

As shown in FIGS. 3 and 4, this elastic wiping body 9 is molded from a rubber material, and has a lip 13 integrally provided with a base 11 fixed to the support 7. There is. This lip 13 is composed of a plurality of lips lined up in the width direction of the elastic wiping body 9, for example, a center lip 13a at the center in the width direction, side lips 13b on both sides in the width direction,
The elastic wiping body is divided into three pieces (13C), and these pieces are kept substantially parallel to the longitudinal direction of the elastic wiping body. Furthermore, the center lip 13a is a side lip 13b.

It is formed longer than 13c, and the angle that its tips make with each other is formed at α. The angle α of this lip 13 is the movable angle β of the support stay 5 with respect to the holder part 1.
When the lip 13 wipes the glass surface 15, the center lip 13a and side lips 13b, 13C wipe the glass surface 1 at appropriate angles in both directions.
5.

Next, the action will be explained.

When the support stay 5 reciprocates as the wiper arm rotates, the elastic wiping body 9 reciprocates along the glass surface 15. That is, as shown in FIG. 4, in the wiping direction A, the center lip 13a and the side lip 13c simultaneously contact the glass surface 15 due to the movement of the support stay 5 at the angle β with respect to the holder part 1, and the wiping In direction B, the center lip 13a and the side lips 13b contact the glass surface 15 at the same time. Therefore, the center lip 13a1
Even if there are scratches or notches on all of the side lips i3b, 13C, the glass surface 15 can be reliably wiped as long as the missing parts do not correspond to the length direction of the elastic wiping body 9.
There are no streaks left behind after wiping.

FIG. 5 J3 and FIG. 6 show other embodiments of the present invention, in which the lips 19 of the elastic wiping body 17 are separated by one center lip 19a, 19b and side lips 19c, 19+1 on both sides, respectively. It has been established. In this lip 19 as well, the center lip 1
Similar effects can be obtained by making the side lips 19c, 19d longer than the side lips 19c, 19d, and setting the angle α formed by the tips thereof to be approximately equal to the movable angle β of the support stay 5 with respect to the holder portion 1. Furthermore, the elastic wiping body 1
At the midpoint of the reciprocating motion of 7, the lip 19 easily comes into contact with the glass surface 15 perpendicularly, and at this time, a one-cushion effect is added to reduce the shock at the time of reversal.

Although the embodiment has been described in which the elastic wiping body is provided with three lips and four lips, the number is not limited as long as there are multiple lips. Further, the angle α formed by the tip of the lip 9.19 can also be set to approximately zero.

[Effects of the Invention] As explained above, according to the present invention, the portion of the elastic wiping body of the wiper blade that contacts the wiping surface is constituted by a plurality of lips arranged in the width direction of the elastic wiping body, and Since the central portion is a center lip and side lips are formed on both sides of the center lip in the width direction, the wiping function can be improved regardless of the curvature of the glass surface.

In addition, if the angle formed by the tips of the center lip and side lip is set to be approximately equal to the angle at which the holder part and the support stay move relative to each other, the multiple lips can be set at an appropriate angle when wiping the wiping surface. can come into contact with the glass, further improving the wiping function.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view of a wiper blade showing an embodiment of the present invention, Fig. 2 is a sectional view of a part of the support stem, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 4 is a Explanatory diagram of the same action, No. 5
Figure 6 is a sectional view of a lip showing another embodiment of the present invention.
The figure is an explanatory diagram of the same operation, and FIG. 7 is a sectional view showing a conventional wiper blade. 1...Holder part 5...Support stay 9.17...
Elastic wiping body 13.19...Lip α, β...Angle Fig. 5 Fig. 6 j171! I IQ ID

Claims (2)

[Claims] (1) A holder part connected to the wiper arm, a support stay movably provided at both ends of the holder part in the longitudinal direction, and an elastic member provided at the end of the support stay that contacts and wipes the wiping surface. In the wiper blade comprising a wiping body, at least a portion of the elastic wiping body that contacts the wiping surface is constituted by a plurality of lips arranged in the width direction of the elastic wiping body, and the lips are arranged in a widthwise central part of the elastic wiping body. A wiper blade comprising a center lip located at the center lip and side lips arranged on both sides of the center lip in the width direction. (2) The wiper according to claim 1, wherein the angle formed by the tips of the center lip and the side lip is set to be approximately equal to the angle at which the holder portion and the support stay move relative to each other. blade.