JP2016155479A - Wiper rubber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiper rubber which is easily perceived by occupants of other vehicles at night in rainy weather and achieves excellent aesthetic quality.SOLUTION: A wiper rubber 1 is held by a wiper frame 100, wipes a surface of an object, and includes: a base substance 10 including a long holding part 12 held by the wiper frame 100 and a wiping part 14 which is provided at the holding part 12 in a longitudinal direction and exposed from the wiper frame 100; and a light reflection layer 16 provided on the wiping part 14 in the base substrate 10. A surface of the light reflection layer 16 forms a light reflection surface 16a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wiper rubber.

  Wiper devices are widely used as transportation devices such as vehicles (automobiles, trains, etc.), ships, airplanes and the like as devices for wiping raindrops attached to windows. The wiper device includes a wiper arm connected to the driving means, and a wiper blade attached to the wiper arm. The wiper blade includes a rubber wiper rubber that contacts the window, and a metal or resin wiper frame that holds the wiper rubber and is attached to the wiper arm.

  The wiper rubber includes a holding unit that is held by the wiper frame, and a wiping unit that is provided in the holding unit in the longitudinal direction and wipes raindrops and the like by contacting an object such as a window. The wiper rubber generally contains graphite in order to enhance slidability, and often contains carbon black for reinforcement (for example, Patent Document 1). A wiper rubber containing graphite or carbon black is usually black and does not reflect light.

By the way, for example, in a vehicle that travels at night in rainy weather, it may be difficult to recognize a vehicle traveling in front because the forward visibility deteriorates. For this reason, it is important to make it easier to recognize the vehicle running in front even when it rains at night.
It is also important to improve the design value of a member such as a wiper device attached to a vehicle or the like to increase the commercial value.

JP 2014-015093 A

  An object of the present invention is to provide a wiper rubber that is easily recognized by a passenger of another vehicle or the like when it rains at night, and that is excellent in design.

The wiper rubber of the present invention has the following configurations [1] to [3].
[1] A wiper rubber which is held by a wiper frame and wipes the surface of an object, wherein a light reflecting surface is provided on the outermost surface of a portion exposed from the wiper frame.
[2] A long holding portion held by the wiper frame, a base including a wiping portion provided in the holding portion in a longitudinal direction, and a light reflection layer provided on at least the wiping portion of the base The wiper rubber according to [1], wherein a surface of the light reflecting layer forms the light reflecting surface.
[3] A base having a long holding portion held by the wiper frame and a wiping portion provided in the holding portion in the longitudinal direction, and a light reflecting material is contained in at least the wiping portion of the base. The wiper rubber according to [1], wherein the surface of the portion of the substrate containing the light reflecting material forms the light reflecting surface.

  An object of the wiper rubber of the present invention is to provide a wiper rubber that is easily recognized by a passenger of another vehicle or the like when it rains at night and is excellent in design.

It is sectional drawing which showed an example of the wiper rubber of this invention. It is sectional drawing which showed a mode that the surface of a target object was wiped off with the wiper rubber of FIG. It is sectional drawing which showed an example of the manufacturing method of the wiper rubber of FIG. It is sectional drawing which showed the other example of the wiper rubber of this invention.

  The wiper rubber of the present invention wipes off water droplets and the like attached to the surface of an object such as a window of a vehicle while being held by a wiper frame of a wiper device. Specifically, the wiper rubber of the present invention can be used by being mounted on, for example, a front wiper or a rear wiper of an automobile.

The wiper rubber of the present invention includes a light reflecting surface on the outermost surface of the portion exposed from the wiper frame. As a result, for example, in a car equipped with a front wiper or a rear wiper equipped with the wiper rubber of the present invention, the light of the headlights of the following vehicle and the oncoming vehicle is reflected by the light reflecting surface when it rains at night, and the reflected light Can be recognized from the inside of the following and oncoming vehicles. As described above, by using the wiper rubber of the present invention, it becomes easy to be recognized from other vehicles or the like, and thus it is easy to prevent a collision from the front or a rear collision from the rear.
The light reflecting surface may be formed on a part of a portion exposed from the wiper frame on the outermost surface of the wiper rubber, or may be formed on the whole exposed portion, or formed on the entire outermost surface of the wiper rubber. May be.

10 to 100% is preferable and, as for the reflectance of the light in the light reflection surface of the wiper rubber of this invention, 20 to 100% is more preferable. If the reflectance is equal to or higher than the lower limit value, the reflected light reflected by the wiper rubber of the present invention is more easily recognized from other vehicles and the like, and collision with other vehicles is easily prevented.
The light reflectance on the light reflecting surface means a value measured by a spectrophotometer (for example, a spectrophotometer manufactured by Hitachi High-Technologies Corporation, model “U-4100”). For example, a measurement sample can be cut out and measured from a portion where the surface of the lip portion described later is flat with a cutter or the like.

The wiper rubber of the present invention can adopt a known mode except that a light reflecting surface is formed on the outermost surface. The mode of forming the light reflecting surface on the outermost surface of the wiper rubber is not particularly limited, and examples thereof include the following modes (i) and (ii).
(I) A mode in which a light reflecting layer is formed on at least a portion of the base of the wiper rubber exposed from the wiper frame, and the surface of the light reflecting layer forms a light reflecting surface.
(Ii) A mode in which a light reflecting material is contained in at least a portion exposed from the wiper frame in the wiper rubber base, and the surface of the portion forms a light reflecting surface.
Hereinafter, modes (i) and (ii) will be described respectively.

[Aspect (i)]
As the wiper rubber of the aspect (i), for example, a long holding part held by a wiper frame, a base provided with a wiping part provided in the longitudinal direction on the holding part, and at least the wiping part in the base And a light reflection layer provided, and the surface of the light reflection layer forms a light reflection surface. In a state where the holding portion is held by the wiper frame, the wiping portion is exposed from the wiper frame.

Specific examples include the wiper rubber 1 illustrated in FIG.
The wiper rubber 1 includes a long holding part 12, a base body 10 including a wiping part 14 provided in the longitudinal direction of the holding part 12, and a light reflection layer 16 provided on the wiping part 14 in the base body 10. Prepare. The surface of the light reflecting layer 16 forms a light reflecting surface 16a.

The holding part 12 and the wiping part 14 in the base 10 are integrally formed.
The holding portion 12 has a long rectangular parallelepiped shape, and two recesses 18 extending in the longitudinal direction are formed on the side surfaces 12a and 12b on both sides. The wiper rubber 1 is attached to the wiper frame by fitting these concave strips 18 with the wiper frame.

The wiping unit 14 is a part for wiping raindrops and the like attached to an object such as a window of a transportation device such as a vehicle.
The wiping part 14 protrudes from the holding part 12 so as to extend in the longitudinal direction. The wiping portion 14 includes a lip portion 20 that extends in the longitudinal direction of the holding portion 12 and contacts an object, and a neck portion 22 that couples the holding portion 12 and the lip portion 20.
The neck portion 22 in this example has a plate-like shape protruding from the holding portion 12 and has a rectangular shape with the protruding direction as a longitudinal direction in a sectional view.

The lip portion 20 includes a plate-like member 24, a base 26, and a tip portion 28.
The plate member 24 is provided at the tip of the neck portion 22 and has a plate shape wider than the neck portion 22.
The base 26 is provided on the opposite side of the neck portion 22 in the plate-like member 24, and is reduced in width as it is away from the plate-like member 24.
The distal end portion 27 protrudes from the distal end of the base 26 so as to extend in the longitudinal direction of the holding portion 12. The tip portion 27 in this example is a flat plate-like member, and has a rectangular shape whose longitudinal direction is the protruding direction in a sectional view.

  The light reflecting layer 16 in this example is formed from the plate-like member 24 to the tip portion 28 on both side surfaces in the width direction of the wiping portion 14. The light reflection layer 16 is not formed on the distal end surface 28a of the distal end portion 28 in the wiping portion 14, and the wiping portion 14 is exposed. The tip surface 28a is a flat surface.

In the wiper device including the wiper rubber 1, when the wiping operation is stopped, the wiper rubber 1 is hidden by the wiper frame when the wiper device is viewed from the wiper frame side. Therefore, the light from the wiper frame side does not reach the light reflecting surface 16a of the wiper rubber 1 and is not reflected.
On the other hand, as shown in FIG. 2, when the holding part 12 is held by the wiper frame 100 to wipe off water droplets or the like adhering to the surface of the object, the wiping part 14 is connected to the lip part 20 and the neck part 22. And the distal end portion 28 and the distal end side of the base 26 are bent. Accordingly, when the wiper device is viewed from the wiper frame 100 side, the light reflecting surface 16a protrudes from the wiper frame 100. Therefore, the light from the wiper frame 100 side is reflected by the light reflecting surface 16a of the wiper rubber 1.

  For example, if the wiper rubber 1 is mounted on the rear wiper of an automobile, the light of the headlight of the following vehicle is reflected by the light reflecting surface 16a of the wiper rubber 1 in the operating rear wiper during the rainy night, and the reflected light Can be confirmed from inside the following car. Thereby, even when it is raining at night, the passenger of the following vehicle can easily recognize the car running ahead, and the rear-end collision can be easily prevented. On the other hand, when the rear wiper is not operating, the headlight light of the following vehicle is not reflected by the light reflecting surface 16a of the wiper rubber 1, so that the passenger of the following vehicle is unnecessarily dazzled by the reflected light. Can be suppressed.

(Substrate)
The material of the substrate is not particularly limited, and those used for a known wiper rubber substrate can be employed.
Specific examples of the base material include rubber materials mainly containing a rubber substrate such as silicone rubber, natural rubber, chloroprene rubber, and ethylene / propylene / conjugated diene copolymer rubber. These rubber materials may be used individually by 1 type, and may be used in combination of 2 or more type. The rubber material is generally crosslinked with a vulcanizing agent.

  As the rubber material used for forming the substrate, ethylene / propylene / conjugated diene copolymer rubber and silicone rubber are preferable because they are excellent in light resistance and chemical stability and hardly cause discoloration and breakage (cracking, etc.). Silicone rubber is more preferable because it is more excellent in properties.

Examples of the silicone rubber include dialkyl silicone rubber, alkyl vinyl silicone rubber, alkylphenyl silicone rubber, alkylphenyl vinyl silicone rubber, and fluorosilicone rubber. The alkyl group in these silicone rubbers is preferably an alkyl group having 1 to 6 carbon atoms, and examples thereof include a methyl group, an ethyl group, a propyl group, and a butyl group.
One type of silicone rubber may be used alone, or two or more types may be used in combination.

The rubber material forming the base may contain various additives (hereinafter also referred to as base additives).
Examples of the additive for the substrate include platinum catalysts; vulcanizing agents such as poly (alkyl vinyl siloxane) and poly (alkyl hydrogen siloxane); condensed azo, isoindolinone, quinacridone, diketopyrrolopyrrole, anthraquinone, dioxazine, Organic pigments such as copper phthalocyanine and allylamide, titanium oxide, zinc oxide, iron oxide (red bengara, black bengara), ultramarine, cobalt blue, carbon, inorganic pigments such as bismuth vanadate, azo, chromium complex, cobalt complex, anthra Colorants such as dyes such as quinone and phthalocyanine; fillers such as silica, calcium carbonate, talc, mica, graphite, carbon black, boron nitride; dispersants; foaming agents; anti-aging agents; antioxidants; Examples include plasticizers; flame retardants; mold release agents and the like.

The hardness of the rubber material forming the substrate is preferably 50 to 90 °, more preferably 55 to 70 °. The hardness of the rubber material means a value measured by an A type durometer of JIS K 6253.
The hardness of the rubber material is adjusted by the type of rubber base material, the type and amount of vulcanizing agent, the type and amount of base additive, and the like.

(Light reflecting layer)
The light reflecting layer is not particularly limited as long as it can form a light reflecting surface on the outermost surface of the wiper rubber, and is formed by a coating solution for forming a light reflecting layer containing a light reflecting material, a binder and a solvent from the viewpoint of easy manufacture. Layer is preferred.
The light reflecting material used in the coating liquid for forming the light reflecting layer may be any material that can form a light reflecting surface. For example, glossy pigments such as “Iriodin 151 ZLustre Pearl” (manufactured by Merck), aluminum Metal pigments with powder or aluminum powder surface treated with colored resin, metal glossy pigments with a metal vapor deposition film such as aluminum on transparent or colored transparent film, and metal vapor deposition films such as aluminum formed on a substrate such as film Metal pigment having a thickness of 0.01 to 0.1 μm obtained, colloidal particles having an average particle size of 5 to 30 nm selected from gold, silver, platinum, and copper, fluorescent pigments, luminous pigments, thermochromic pigments, rigidity Examples include mica, glass pieces, alumina, and pearl pigments in which the surface of a transparent film piece is coated with a metal oxide such as titanium oxide.
A light reflection material may be used individually by 1 type, and may be used in combination of 2 or more type.

The binder is not particularly limited, and examples thereof include rubber base materials mentioned as the base material. When the base material is composed mainly of silicone rubber, silicone rubber is preferable as the binder in the coating liquid for forming the light reflecting layer from the viewpoint of adhesion between the base and the light reflecting layer.
The rubber material used as the binder may be crosslinked with a vulcanizing agent.
A binder may be used individually by 1 type and may be used in combination of 2 or more type.

It does not specifically limit as a solvent, For example, organic solvents, such as isopropanol, ethyl acetate, toluene, are mentioned.
A solvent may be used individually by 1 type and may be used in combination of 2 or more type.

If necessary, the light reflecting layer may contain various additives (hereinafter also referred to as additives for the light reflecting layer) as long as the effects of the present invention are not impaired.
Examples of the additive for the light reflecting layer include the same ones as mentioned for the additive for the substrate. However, it is preferable that the light reflecting layer does not contain a material that lowers the reflectance of the light reflecting surface, such as graphite or carbon black.

  The content of the light reflecting material in the light reflecting layer formed by the coating liquid for forming the light reflecting layer is preferably set to an amount capable of forming the light reflecting surface having the preferable light reflectance described above. 1-80 mass% is preferable and, as for content of the light reflection material in this light reflection layer (100 mass%), 5-70 mass% is more preferable. When the content of the light reflecting material is within the above range, the light is easily reflected on the light reflecting surface, and the reflected light can be easily recognized from other vehicles.

  The content of the binder in the light reflection layer formed by the coating liquid for forming the light reflection layer is preferably 5 to 70% by mass, and more preferably 10 to 60% by mass. If the content of the binder is equal to or more than the lower limit value, the light reflecting material and the binder are easily combined with each other, and the light reflecting material is not easily dropped. If content of the said light reflection material is below the said upper limit, a light reflection material will be easy to be exposed to the surface of a light reflection layer, and the effect of this invention will be easy to be acquired.

  The thickness of the light reflecting layer formed by the coating solution for forming the light reflecting layer is preferably 1 to 200 μm, and more preferably 5 to 100 μm. If the thickness of the light reflecting layer is equal to or more than the lower limit value, the light reflecting material is likely to be a sufficient amount, the reflectance is increased, and the visibility is further increased. If the thickness of the light reflection layer is equal to or less than the upper limit, the reflectance is high and sufficient visibility can be obtained.

  The light reflecting layer is not limited to the light reflecting layer formed by the above-described coating liquid for forming the light reflecting layer. For example, the light reflecting layer is formed by vapor deposition of a metal such as aluminum or alumina or a metal oxide. It may be a layer.

(Production method)
The manufacturing method of the wiper rubber 1 is not particularly limited.
For example, as shown in FIG. 3, a rubber composition containing a rubber material that forms the substrate 10 is molded by extrusion molding, heat compression molding, or the like, and subjected to heat treatment for vulcanization as necessary. 10 is connected by the front end surfaces 28a of the wiping portion 14 to obtain a molded body 10A that is integrally molded.
Next, a light reflecting layer forming coating solution is applied to the side surfaces of both sides of the wiping portion 14 in the molded body 10 </ b> A, dried, and heat treated for vulcanization as necessary to form the light reflecting layer 16. The method for applying the coating solution for forming the light reflecting layer is not particularly limited, and a known coating method such as a spray method can be employed.
Next, the molded body 10A on which the light reflecting layer 16 is formed is cut along a center line L corresponding to the position where the front end face 28a faces to obtain the wiper rubber 1.

The wiper rubber of the aspect (i) is not limited to the wiper rubber 1.
For example, the light reflection layer may be provided at least on the wiping portion so that the reflected light reflected from the light reflection surface from another vehicle or the like can be confirmed, and may be provided on the entire surface of the base. Moreover, the light reflection layer may be provided only on one side surface in the width direction of the substrate.
Further, the light reflecting layer may be provided from one end to the other end in the longitudinal direction of the substrate, or may be provided partially in the longitudinal direction of the substrate, or provided intermittently. May be.

[Aspect (ii)]
The wiper frame of the aspect (ii) includes, for example, a base including a holding part and a wiping part, and at least the wiping part of the base contains a light reflecting material, and the part of the base containing the light reflecting material The surface has formed the light reflection surface. In a state where the holding portion is held by the wiper frame, the wiping portion is exposed from the wiper frame.

Specific examples include the wiper rubber 2 illustrated in FIG.
The wiper rubber 2 includes a base 10 including a long holding portion 12 and a wiping portion 14 provided in the holding portion 12 in the longitudinal direction. The entire base 10 contains a light reflecting material, and the surface of the base 10 is A light reflecting surface 30 is formed. The wiper rubber 2 is the same as the wiper rubber 1 except that the light reflecting layer 16 is not provided and a light reflecting material is contained in the substrate 10 and the surface of the substrate 10 forms the light reflecting surface 30. The same parts in FIG. 4 as those in FIG.

  In the wiper device including the wiper rubber 2, as in the case of the wiper rubber 1, the wiper rubber 2 is hidden by the wiper frame when the wiping operation is stopped, and the light from the wiper frame side reaches the light reflecting surface 30 of the wiper rubber 2. Not reflected. On the other hand, when wiping off water droplets or the like adhering to the surface of the object, a part of the wiping portion protrudes from the wiper frame, so that light from the wiper frame is reflected by the light reflecting surface 30 of the base 10.

  For example, if the wiper rubber 2 is attached to the rear wiper of an automobile, the light of the headlight of the following vehicle is changed to the light of the wiper rubber 2 in the operating rear wiper even in the case of rain at night as in the case of the wiper rubber 1. Reflected by the reflecting surface 30. Therefore, even when it is raining at night, the passengers of the following vehicle can easily recognize the car running ahead, and the rear-end collision can be prevented in advance. On the other hand, when the rear wiper is not operating, the light of the headlight of the following vehicle is not reflected by the light reflecting surface 30 of the wiper rubber 2, so that the passenger of the following vehicle is unnecessarily dazzled by the reflected light. Can be suppressed.

As the base material, the same material as in the embodiment (i) can be adopted except that a light reflecting material is contained.
The light reflecting material contained in the substrate is not particularly limited as long as the surface of the substrate can be used as a light reflecting surface, and examples thereof include the same materials as those described in the description of the light reflecting layer in the aspect (i). It is done. The light reflecting material contained in the substrate may be one kind or two or more kinds.

  The content of the light reflecting material in the substrate is preferably set to an amount capable of forming the light reflecting surface having the preferable light reflectance described above. 5-70 mass% is preferable and, as for content of the light reflection material in a base | substrate (100 mass%), 10-60 mass% is more preferable. When the content of the light reflecting material is within the above range, the light is easily reflected on the light reflecting surface, and the reflected light can be easily recognized from other vehicles.

(Production method)
The manufacturing method of the wiper rubber 2 is not particularly limited, and a known method can be adopted except that a light reflecting material is blended in the base. For example, using a rubber composition in which a light reflecting material is blended with a rubber material, the two bases 10 are formed by extrusion molding, heat compression molding, or the like, as in the case of the wiper rubber 1, and the tip surfaces of the wiping portions 14 are formed. 28a is connected to obtain a molded body integrally formed. Next, the molded body is cut at a portion corresponding to the position where the front end face 28a faces to obtain the wiper rubber 2.

In addition, the wiper rubber of aspect (ii) is not limited to the wiper rubber 2.
For example, it is sufficient that the light reflecting material is contained in at least the wiping portion so that the reflected light reflected by the light reflecting surface from another vehicle or the like can be recognized, and the light reflecting material is contained only in the wiping portion of the base. May be. A substrate containing a light reflecting material only in the wiping part is manufactured by, for example, two-color molding using a rubber composition in which a light reflecting material is blended with a rubber base material and a rubber composition not containing the light reflecting material. it can.

The wiper rubber of the present invention is particularly effective when used in a rear wiper of an automobile because it can prevent a rear-end vehicle from colliding in the rain at night.
The use of the wiper rubber of the present invention is not limited to a rear wiper of an automobile, and may be used for a front wiper of an automobile, may be used for a wiper of a vehicle other than an automobile, and is not a vehicle such as a ship or an airplane. You may use for the wiper of the transportation equipment.

In the wiper rubber of the present invention described above, light from other vehicles is reflected by the light reflecting surface formed on the outermost surface, so that it is easy to be recognized by passengers of other vehicles even during rainy night. Thereby, since the presence of the wiper device equipped with the wiper rubber of the present invention is easily recognized by other vehicles or the like, a collision from the front or a rear collision from the rear is easily prevented. In particular, when the wiper device is in operation, the wiper rubber that reflects light is moving, so that it is easy to draw attention of passengers such as other vehicles, and the effect of preventing a collision is high.
Moreover, in the wiper rubber of this invention, since light reflects in the light reflection surface formed in the outermost surface, it is excellent also in design property.

EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited by the following description.
[Production Example 1]
For 100 parts by mass of silicone rubber compound “KE961u” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.), vulcanizing agent “C-8” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd., 2,5-dimethyl- 2,5-bis (2-butylperoxy) hexane) and 2 parts by mass of a colorant “KE-color-CB” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) A rubber composition was obtained.
After sufficiently kneading the rubber composition using two rolls, the rubber composition is divided into appropriate thicknesses and lengths and held by applying a heat compression molding method (molding temperature: 170 ° C., molding time: 4 minutes). A substrate precursor comprising a part and a wiping part was obtained. The substrate precursor was subjected to secondary vulcanization in an oven (vulcanization temperature 200 ° C., vulcanization time: 2 hours) to obtain a substrate for an automobile rear wiper.

Example 1
Dimethyl silicone rubber “KE76VBS” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) 30 parts by mass as a binder, vulcanizing agent “CAT-PL-2” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.3 Mass parts and 20 parts by mass of a glossy pigment (Iriodin 151 ZLustre Pearl, manufactured by Merck & Co., Inc.) were added to 400 parts by mass of toluene and stirred to obtain a coating solution for forming a light reflecting layer.
The coating solution for forming the light reflecting layer was sprayed onto the entire surface of the substrate obtained in Production Example 1 by spraying. Thereafter, the applied coating solution was air-dried and further heat-treated at 180 ° C. for 10 minutes to obtain a wiper rubber in which a light reflecting layer having a thickness of 20 μm was formed on the entire surface of the substrate.

Two cars A and B were prepared. The wiper rubber was mounted on the wiper frame of the rear wiper of the car A. At night, with the automobile A stopped, the rear wiper was operated without turning on the tail light of the automobile A. The automobile B was stopped in a row at intervals of 50 m behind the automobile A, the headlight of the automobile B was turned on, and the automobile A was observed from the inside of the automobile B. As a result, the light of the headlight of the automobile B was reflected on the wiper rubber of the rear wiper operating in the automobile A, and the reflected light could be confirmed from the inside of the automobile B. As a result, it was easily recognized from the inside of the automobile B that the automobile A was stopped ahead.
Next, the rear wiper of the car A was stopped. In this state, the wiper rubber of the rear wiper of the car A as viewed from the car B is hidden by the wiper frame, so that the light of the headlight of the car B is not reflected by the wiper rubber of the car A, and the reflected light of the car B It was not confirmed from inside the car.

[Comparative Example 1]
Dimethyl silicone rubber “KE76VBS” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) 30 parts by mass as a binder, vulcanizing agent “CAT-PL-2” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.3 Mass parts and 20 parts by mass of black pigment (BF-30A, manufactured by Chuetsu Graphite Co., Ltd.) were added to 400 parts by mass of toluene and stirred to obtain a sliding layer forming coating solution. A wiper rubber in which a sliding layer having a thickness of 20 μm is formed on the entire surface of the substrate in the same manner as in Example 1 except that the sliding layer forming coating solution is used instead of the light reflecting layer forming coating solution. Got.

  The obtained wiper rubber is mounted on the wiper frame of the rear wiper of the automobile A, and the rear wiper is operated, in the same manner as in the first embodiment, from the inside of the rear automobile B in which the headlight is turned on. A was observed. However, the light of the headlight of the automobile B was not reflected by the wiper rubber of the rear wiper of the automobile A, and the reflected light was not confirmed from the inside of the automobile B.

DESCRIPTION OF SYMBOLS 1, 2 Wiper rubber | gum 10 Base | substrate 12 Holding | maintenance part 14 Wiping part 16 Light reflection layer 16a Light reflection surface 18 Recessed strip 20 Lip part 22 Neck part 24 Plate-like member 26 Base 28 Tip part 30 Light reflection surface 100 Wiper frame

Claims (3)

In the wiper rubber that is held by the wiper frame and wipes the surface of the object,
A wiper rubber comprising a light reflecting surface on an outermost surface of a portion exposed from the wiper frame. A base having a long holding portion held by the wiper frame, and a wiping portion provided in the holding portion in a longitudinal direction;
A light reflecting layer provided on at least the wiping portion of the base body,
The wiper rubber according to claim 1, wherein a surface of the light reflecting layer forms the light reflecting surface. A long holding portion held by the wiper frame, and a base including a wiping portion provided in the holding portion in a longitudinal direction;
A light reflecting material is contained in at least the wiping portion of the base,
The wiper rubber according to claim 1, wherein a surface of a portion of the substrate containing the light reflecting material forms the light reflecting surface.

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