JPH0549527U - Wiper blade - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a wiper blade that does not float from the glass surface even at high speeds. [Structure] The wiper blade 1 is covered with a rubber cover 12 in a watertight manner from the pivotally attached portions 5 and 5 of the primary lever 2 to a backing 10, and caps 16 are placed on openings at both ends of the backing 10 to completely seal them. Therefore, there is no risk that moisture such as rainwater will enter and the wiper blade joint pieces such as the secondary lever 6 and the yoke lever 8 will freeze. Further, the entire wiper blade 1 is not covered with the rubber cover 12, but the airflow passes through the space S between the exposed primary lever 1 and the covered portion of the rubber cover 12, and the wind pressure acting during high-speed traveling is obtained. Is reduced, the drag force and lift force on the wiper blade 1 are reduced, the rubber blade 13 does not float above the glass surface, and the wiping property is not impaired.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wiper blade for a vehicle used especially in a cold region.

[0002]

[Prior Art]

 A conventional wiper blade used in a cold region has a rubber cover e covering a primary lever b to a backing d supported by a rubber blade c as shown in FIG. Wiper blade prevents the joint from freezing.

[0003]

[Problems to be solved by the device]

 However, if the rubber cover e covers from the primary lever b to the backing d, the wind pressure during traveling acts on the projected area of the wiper blade shown in FIG. 4 (b), so that especially during high-speed traveling. There is a problem in that the wiper blade floats up from the glass surface and the wiping property deteriorates, making it impossible to secure the front view. The present invention has been made to solve the above problems, and an object thereof is to provide a wiper blade that does not float up from the glass surface even when traveling at high speed.

[0004]

[Means for Solving the Problems]

 As a specific means for achieving the above object, the wiper is characterized in that a waterproof cover covers from a pivotal attachment portion at both ends of a primary lever provided with clips for attaching to a wiper arm to a support portion of a rubber blade. Blades are provided.

[0005]

[Advantage] According to the wiper blade configured as described above, an air flow can pass between the exposed primary lever and the pivotally attached portions at both ends of the primary lever covered by the waterproof cover to the support portion of the rubber blade, and the wind pressure acting area. Is reduced.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway front view of a wiper blade 1 according to the present invention. The primary lever 2 is made of a pipe material having a circular cross section, and a clip 3 for attaching to a wiper arm (not shown) is formed at a substantially central portion thereof so that both end portions 4 and 4 are curved downward and the both end portions 4 and 4 are bent. Bifurcated pivot parts 5, 5 are formed at the lower end. The pivoting pins 5a and 5a are inserted into the pivoting portions 5 and 5, respectively, and the substantially central portion of the secondary lever 6 is pivotally attached. Further, bifurcated pivoting portions 7, 7 are formed at both ends of the secondary lever 6, and the pivoting pins 7 a, 7 a are respectively inserted into the pivoting portions 7, 7 so that the yoke lever 8 has a substantially central portion. Pivot.

Gripping pieces 9, 9 are formed on both ends of the yoke lever 8, and a predetermined portion of the backing 10 is gripped by the gripping pieces 9, 9. The backing 10 is a square pipe material having a quadrangular cross section and is provided with a charging groove 11 at the center of the lower surface. The rubber cover 12 covers the pivotally attached portions 5 and 5 of the primary lever 2 to the backing 10 in a watertight manner. The part of the rubber cover 12 which covers the backing 10 is pushed from the charging groove 11 of the backing 10 and is made to follow the inner surface of the backing 10 (FIG. 2).

Further, the square head 14 of the rubber blade 13 is fitted into the backing 10 from the end opening in the longitudinal direction, and the neck 15 connected to the square head 14 is inserted into the charging groove. Then, the rubber blade 13 is loaded and supported on the blade 11. Then, the caps 16 are put on the openings at both ends of the backing 10.

In the wiper blade 1 having the above-described structure, the rubber cover 12 covers the pivoting portions 5 and 5 of the primary lever 2 to the backing 10 in a watertight manner, and the caps 16 are placed on the openings at both ends of the backing 10. Since it is completely sealed, there is no risk that water such as rainwater will enter and the wiper blade joints such as the secondary lever 6 and the yoke lever 8 will freeze.

Further, the entire wiper blade 1 is not covered with the rubber cover 12, but the airflow passes through the space S between the exposed primary lever 1 and the covered portion by the rubber cover 12, so that the wiper blade 1 travels at high speed. The wind pressure that sometimes acts is reduced, the drag force and lift force on the wiper blade 1 are reduced, the rubber blade 13 does not float from the glass surface, and the wiping property is not impaired. Further, the neck portion 15 of the rubber blade 13 loaded through the loading groove 11 of the backing 10 is elastically pressed by the rubber covers 12 from both sides thereof, so that the backing 10 is firmly supported without rattling.

As shown in FIG. 3, the backing 20 and the yoke lever 28 that holds the backing 20 are covered with rubber covers 23, respectively, so that they are pivotally attached to both ends of the primary lever 22. Good. Also in this case, the space S through which the air flow can pass is formed between the primary lever 22 and the backing 20, and the air pressure acting area is reduced.

[0012]

[Effect of the device]

 The wiper blade of the present invention has the above-mentioned configuration, and the air flow is generated in the space between the exposed primary lever and the pivotally attached portions at both ends of the primary lever covered by the waterproof cover to the support portion of the rubber blade. Since it can pass through and the air pressure acting area is reduced, it is suitable for cold districts, because it does not hinder the wiping property because it floats from the glass surface during high-speed traveling and impairs the forward visibility.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a wiper blade according to the present invention.

FIG. 2 is an enlarged sectional view taken along the line AA in FIG.

FIG. 3 is a partially cutaway front view showing another embodiment.

FIG. 4 is a schematic diagram showing a conventional example.

[Explanation of symbols]

1 ... Wiper blade, 2, 22 ... Primary lever, 5, 5 ... Pivoting part, 10, 20 ... Backing, 11 ... Loading groove, 12, 23 ... Rubber cover ,
13 ... Rubber blade.

Claims (1)

[Scope of utility model registration request] 1. A wiper blade characterized in that a waterproof cover covers from a pivotal attachment portion at both ends of a primary lever provided with a clip for attaching to a wiper arm to a support portion of a rubber blade.