JPH1035418A - Wiper blade rubber and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a wiper blade rubber which is excellent in wiping durability and is provided with a low friction property and a good abrasion resistance. SOLUTION: A vacuum pump, which is not shown in a figure, is driven and the inside of a vacuum container 4 is made a high vacuum condition. When methane gas is supplied from an inlet 1A of a plasma tube 1 and high frequency electric power is supplied to a coil 3, a diamond type carbon layer (DLC) can be formed on the surface of a wiper blade rubber 6 by means of plasma CVD in the methane gas environment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper blade rubber, and more particularly to a wiper blade rubber excellent in low friction characteristics, wear resistance characteristics and wiping durability.

[0002]

2. Description of the Related Art A wiper blade rubber is required to have a good wiping property based on a smooth operation on a glass surface as its essential function. Therefore, a coefficient of friction of a lip portion for wiping a glass surface is constant. Values below the level are required.
Normally, the wiper blade rubber is subjected to a halogenation treatment involving a chemical reaction with the rubber surface layer from the viewpoint of not only the effect of reducing the coefficient of friction but also the production cost and the durability of the surface treatment effect.

[0003]

However, the conventional halogenated wiper blade rubber has a problem that the wiping durability is inferior because the ozone resistance is not sufficient. Accordingly, an object of the present invention is to provide a wiper blade rubber which has excellent wiping durability for a long time, and also has good low friction characteristics and good wear resistance characteristics.

[0004]

The wiper blade rubber according to the present invention has a diamond-like carbon (DLC) film formed on at least the surface of the wiping portion. The manufacturing method of the wiper blade rubber according to the present invention, the first step of forming the rubber and then vulcanizing to produce the wiper blade rubber, in an atmosphere of methane gas, at least the surface of the wiper portion of the wiper blade rubber, And a second step of forming a diamond-like carbon (DLC) film by plasma CVD.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic structural view showing an apparatus for producing a wiper blade rubber according to the present invention. Reference numeral 1 denotes a plasma tube, and methane gas is supplied from an inlet 1A of the plasma tube 1. Reference numeral 2 denotes a mesh electrode, and reference numeral 3 denotes a coil. The coil 3 is wound around the outer periphery of the plasma tube 1 and supplied with high-frequency power. Reference numeral 4 denotes a vacuum vessel, and an outlet 4A of the vacuum vessel 4 is connected to a vacuum pump (not shown). Reference numeral 5 denotes a support, and reference numeral 6 denotes a wiper blade rubber. The wiper blade rubber 6 is supported by the support 5. A process of forming a diamond-like carbon (DLC) film on the surface of a wiper blade rubber using this manufacturing apparatus will be described. First, a vacuum pump (not shown) is driven to bring the inside of the vacuum container 4 into a high vacuum state. When methane gas is supplied from the inlet 1A of the plasma tube 1 and high frequency power is supplied to the coil 3, a diamond-like carbon (DLC) film is formed on the surface of the wiper blade rubber 6 by plasma CVD in an atmosphere of methane gas. be able to. The diamond-like carbon (D
LC) The film may be formed only on the tip of the wiping portion of the wiper blade rubber 6, may be formed on the entire wiping portion, or may be formed on other necessary portions. Of course.

[0006]

As described in detail above, according to the wiper blade rubber and the method of manufacturing the same according to the present invention, the wiper blade is excellent in wiping durability for a long time, and has good friction and wear resistance. It is effective in that rubber can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a wiper blade rubber manufacturing apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plasma tube 2 Mesh electrode 3 Coil 4 Vacuum container 5 Support base 6 Wiper blade rubber

Claims (2)

[Claims] 1. A long wiper blade rubber having a wiping portion for wiping a glass surface of a vehicle, wherein at least the surface of the wiping portion has diamond-like carbon (DL).
C) A wiper blade rubber formed with a film. 2. A method for producing a long wiper blade rubber having a wiping portion for wiping a glass surface of a vehicle, comprising: a first step of forming a rubber and then vulcanizing the rubber to form a wiper blade rubber; A step of forming a diamond-like carbon (DLC) film by plasma CVD on at least the surface of the wiper blade rubber in an atmosphere of methane gas.