WO2012035690A1

WO2012035690A1 - Tire

Info

Publication number: WO2012035690A1
Application number: PCT/JP2011/003784
Authority: WO
Inventors: 大太糸井
Original assignee: 株式会社ブリヂストン
Priority date: 2010-09-15
Filing date: 2011-07-01
Publication date: 2012-03-22
Also published as: JP2012061922A; JP5719552B2

Abstract

A tire with increased visibility of an emblem disposed on a side section surface is provided. A colored region of a different color to the base color of the tire is disposed on the surface of at least one side section of the tire and an emblem of a different color to the colored region is displayed in the colored region. It is desirable that the colored region is formed by the arrangement of colored rubber or by printing. It is also desirable that the brightness of the colored region is 80% or more, the brightness of the emblem is 20% or less, and/or the chroma difference between the colored region and the emblem is 70% or more.

Description

tire

The present invention relates to a pneumatic tire or a solid tire in which a mark is provided on the surface of the side portion to improve the visibility of the mark.

Conventionally, the company name, brand name, tire size, production time, etc. on the surface of the side part including the outer surface of each of the side wall part and the bead part are composed of characters, symbols, symbols including bar codes, patterns, etc. The display is performed by chapter (for example, JP 2010-100090 A). As these displays, there is a display formed by using printing or painting, pasting a decorated seal or the like, or exposing the embedded colored rubber. In general tires, since the ground color of the tire is black, the mark is displayed in white on a black background.

However, if the mark is displayed in white on a black background, the surface of the side part may become dirty with the use of the tire, and the mark may not be easily recognized. In addition, there is a demand to make the mark stand out more than before and to stimulate the user's willingness to purchase.
Then, this invention is providing the tire which improved the visibility of the mark provided in the surface of the side part.

The gist of the present invention is as follows.
(1) A color region having a color different from the ground color of the tire is provided on the surface of at least one side portion of the tire, and a mark having a color different from the color region is displayed in the color region. Tire characterized by.

(2) The tire according to (1), wherein the color region is formed by arrangement of colored rubber or printing.

(3) The tire according to (1) or (2) above, wherein the lightness of the color region is 80% or more and the lightness of the mark is 20% or less.

(4) The tire according to any one of (1) to (3) above, wherein a saturation difference between the color region and the mark is 70% or more.

(5) The above (1) to (1), wherein the side portion is provided with a convex portion protruding outward in the tire width direction from the surface of the side portion, and the color region is formed on the convex portion. The tire according to any one of 4).

According to the present invention, it is possible to provide a tire with improved visibility of a mark provided on the surface of the side portion.

1 is a side view of a tire according to a first embodiment of the present invention. 1 is a cross-sectional view in the width direction of a half portion of a tire according to a first embodiment of the present invention. It is an expanded sectional view of the side part of the tire concerning the 2nd example of the present invention.

Hereinafter, the tire of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a side view of a tire according to a first embodiment of the present invention, and FIG. 2 shows a cross-sectional view in the width direction of a half portion of the tire.
As shown in FIG. 1, a belt-like color area 2 having a color different from the ground color of the tire (generally black) is provided on the surface of the side portion 1 of the tire 10. The mark 3 having a different color is displayed. In the illustrated example, the mark 3 is “ABCDEFG”, but the mark 3 includes a company name, a brand name, a tire size, a manufacturing time, and the like including characters, figures, barcode symbols, patterns, and the like. can do.
As shown in FIG. 2, the side portion 1 includes a sidewall portion 5 that extends inward in the radial direction continuously to each side portion of the tread portion 4, and a bead portion that continues inward in the radial direction of the sidewall portion 5. 6, and more specifically, a range from the outer edge in the tire width direction of the tread surface to the rim fitting portion of the bead portion 6.

Since the color region 2 has a color different from the ground color of the tire, when a new tire is displayed, the user's eyes are attracted to this portion. Therefore, the mark 3 on the color area 2 can be made conspicuous, and the user's willingness to purchase is stimulated. In addition, since the mark 3 has a color different from that of the color area 2, the mark 3 has an effect of high visibility.

The color region 2 is preferably formed by placing a color rubber as a part of the sidewall rubber and then vulcanizing it, or by printing using ink.
When the color region 2 is formed by the arrangement of the colored rubber, the same color is maintained even if the side portion 1 is somewhat worn, and the above-described effects of the color region 2 can be maintained.
On the other hand, when the color region 2 is formed by printing, the color region 2 having good color developability can be easily formed.
The mark 3 is preferably formed by printing using ink, painting using a paint, or sticking a seal formed separately from the tire 10.

The lightness of the color region 2 is preferably 80% or more. Because the ground color of a general tire is black (lightness 0%), by providing a color region 2 of a color close to white (lightness 100%), the user's eyes This is because it can be attracted to the mark 3 on the color area 2.
Moreover, it is preferable that the brightness of the mark 3 is 20% or less. Because, as described above, when the brightness of the color area 2 as the background is set to 80% or more, the brightness difference between the mark 3 and the color area 2 is increased by setting the brightness of the mark 3 to 20% or less. This is because the visibility of the mark is improved.
For example, when the color region 2 is white (lightness 100%) and the mark 3 is black (lightness 0%), the user's eyes can be attracted to the mark 3 and the visibility of the mark 3 can be obtained. Will also improve.

The saturation difference between the color region 2 and the mark 3 is preferably 70% or more. This is because, even when there is no brightness difference between the background color region 2 and the mark 3, if the saturation difference is large, the visibility of the mark 3 is improved.
For example, when the color region 2 is green (saturation 70%) and the mark 3 is white (saturation 0%), the user's eyes can be attracted to the mark 3 and the mark 3 is visually recognized. Also improves.

Lightness and saturation are defined in the HSV model. In addition, brightness and saturation are measured by the following two methods.
The first method is to prepare or create a color sample and identify it. That is, by outputting paper from a personal computer or the like to a printer, a large number of close color samples are created, and this color sample is superimposed on the color region 2 and the mark 3 for easy identification.
The second method is necessary after measuring the brightness and saturation of the color region 2 and the mark 3 in another system (for example, Lab color space) using a spectrocolorimeter (for example, manufactured by Konica Minolta). Conversion into an HSV system using a simple software (eg, Photoshop (registered trademark)).

FIG. 3 is an enlarged cross-sectional view of the side portion of the tire according to the second embodiment of the present invention. In the second embodiment, the side portion 1 is provided with a convex portion 7 that protrudes outward from the surface of the side portion 1 in the tire width direction. The convex portion 7 has a plane (plane between A and C) inclined at an angle θ 2 in a direction parallel to the tire equatorial plane CL, and this plane is the color region 2. The angle θ2 is smaller than the inclination angle θ1 of the surface of the side portion 1 (indicated by a two-dot chain line in the figure) when the convex portion 7 is not provided with respect to the direction parallel to the tire equatorial plane CL.
As shown in FIG. 3, when the convex portion 7 is provided in the vicinity of the bead portion 6 on the inner side in the tire radial direction from the position P of the maximum width of the tire, the inclination angle θ1 is larger than that in the vicinity of the position P of the maximum width. Then, when the mark 3 is displayed in the color region 2 without providing the convex portion 7, the circumference at the position A point on the outer side in the tire radial direction is longer than the circumference at the point B on the inner side in the tire radial direction. The lower side (point B point side) of the character 3 is displayed narrowly.
Therefore, the convex portion 7 is provided, the difference between the circumferential length at the position A point and the circumferential length at the vertex C point of the convex portion 7 is shortened, and the mark 3 is displayed in the color area 2 of the plane between A and C. Then, the problem mentioned above is eased and the visibility of a mark improves.
In addition, the convex part 7 may be formed by vulcanizing after placing the colored rubber, or after being formed of the same rubber as the side wall rubber of the other part, the color region is printed by printing on the surface thereof. 2 may be formed.

As used herein, “tire maximum width” refers to the maximum linear width between the surfaces of the side portions excluding convex portions such as patterns and letters on the tire side when the tire is a solid tire. When the tire is a tire, the maximum straight line width between sidewalls excluding convex parts such as patterns on the side of the tire and characters, in a tire with the tire mounted on the applicable rim and filled with the specified air pressure It shall be said.
Here, “applicable rim” refers to the rim specified in the following standards according to the tire size, and “specified air pressure” refers to the air pressure specified in accordance with the maximum load capacity in the following standards. The maximum load capacity refers to the maximum mass allowed to be loaded on a tire according to the following standards.
The air here can be replaced with an inert gas such as nitrogen gas or the like.
The standard is an industrial standard that is valid in the region where tires are produced or used. For example, in the United States, it is “THE TIRE AND RIM ASSOCIATION INC. “STANDARDS MANUAL” of Technical Organization, and “JATMA YEAR BOOK” of Japan Automobile Tire Association in Japan.

DESCRIPTION OF SYMBOLS 1 Side part 2 Color area | region 3 Mark 4 Tread part 5 Side wall part 6 Bead part 7 Convex part 10 Tire

Claims

A color region having a color different from the ground color of the tire is provided on a surface of at least one side portion of the tire, and a mark having a color different from the color region is displayed in the color region. Tire.
The tire according to claim 1, wherein the color region is formed by arrangement of colored rubber or printing.
The tire according to claim 1 or 2, wherein the lightness of the color region is 80% or more and the lightness of the mark is 20% or less.
The tire according to any one of claims 1 to 3, wherein a saturation difference between the color region and the mark is 70% or more.
5. The convex portion that protrudes outward in the tire width direction from the surface of the side portion is provided on the side portion, and the color region is formed on the convex portion. The described tire.