JP2000016029A - Pneumatic tire having annular decorative element formed with design similar to tread pattern on surface of side wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make recessed and projecting parts generated on a side wall inconspicuous by providing an annular decorative element on at least one side of the side wall surface of a pneumatic tire, and forming a design about the same as or similar to a tread pattern on the decorative element. SOLUTION: In a pneumatic tire, there is a problem of generating recessed and projecting parts at a joint part of the start of winding carcass ply and the end of winding carcass ply on a side wall of the tire after vulcanizing. In order to make the recessed and projecting parts generated on the side wall of the tire inconspicuous, an annular decorative element is provided on the surface of the side wall, and a design similar to a tread pattern is formed. The design formed on the decorative element is made to be about 0.3 to 3 mm in depth. A trademark is overlappingly formed on the design on the decorative element, which make it possible to distinguish the tread pattern only by looking from the side of the tire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic tire, and more particularly to a pneumatic tire having an annular decorative body on the surface of a sidewall.

[0002]

2. Description of the Related Art A pneumatic tire is a toroidal or donut-shaped annular body. Generally, a carcass is not manufactured as an annular body from the beginning, but is first manufactured in a sheet-like form. The ply is rotated once around the forming drum of the tire and is joined in an annular shape by joining the start and end points of the winding. After that, the green tire molded by attaching necessary structural members such as chafers, breakers or belts and treads is pressed and heated for a certain period of time in a metal mold such as steel or aluminum, and vulcanized. By doing so, tires are manufactured.

[0003]

As a result, in the sidewall of the tire after vulcanization, irregularities are generated at the portions corresponding to the joint portions at the beginning and end of the winding of the carcass ply. The unevenness of the sidewall is not a fatal defect in the performance and durability of the tire, but the carcass ply has a one-ply radial radii for passenger cars.
In a tire or the like, the unevenness of the sidewall is relatively conspicuous, which may give a customer an uneasy feeling.

Further, a pneumatic tire generally has a pair of left and right bead cores, and the carcass ply is folded back from the inside to the outside and is moored at the bead portion. The folded end of the ply is located at the side wall, and the side rubber is disposed outside the side wall. When the side rubber becomes thinner in response to a request for a lighter tire, the folded end of the carcass ply may become relatively conspicuous as unevenness of the sidewall.

Heretofore, it has been proposed and practiced to form a number of small ridges over a wide area of a tire sidewall. However, in order to form a ridge on the sidewall of the tire, it is necessary to form a concave portion in the mold, and during this concave portion forming process, the cutting edge of the cutting tool gradually wears, and the concave portion is formed at the beginning and end of the concave portion. When the processing of one round of the mold is completed due to the difference in the cross-sectional shape, the adjacent portions at the beginning and end of the excavation have an uneven pattern, which is not preferable in appearance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a pneumatic tire having a side wall provided with an annular decorative body which solves the above-mentioned disadvantages of the prior art and makes unevenness generated on the side wall of the tire inconspicuous. That is.

[0007]

In order to achieve the above object, a pneumatic tire according to the present invention has an annular decorative body on at least one side wall, and is substantially the same as or similar to a tread pattern. A pneumatic tire, wherein a pattern is formed on the decorative body.

In order to achieve the above object, in the pneumatic tire according to the present invention, it is preferable that the pattern formed on the decorative body has a depth of about 0.3 to 3 mm.

[0009] In order to achieve the above object, in the pneumatic tire according to the present invention, a trade mark or trade dress composed of letters, numbers, symbols or figures is further superimposed on the pattern formed on the decorative body. It is preferably formed in a uniform manner.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pneumatic tire according to an embodiment of the present invention will be described below with reference to the drawings. FIG.
1 is a partial perspective view of a tire according to an embodiment of the present invention. As shown in the figure, the tire of the embodiment has an annular decorative body on the surface of the sidewall, and a pattern similar to the tread pattern is formed on the decorative body. The depth of the pattern formed on this decorative body is about 0.7 mm. On top of the pattern formed on this decorative body, a trademark “POTENZ” consisting of letters of the alphabet is further added.
"A" is formed in an overlapping manner.

[0011]

The pneumatic tire according to the present invention has an effect of making unevenness generated on sidewalls of the tire inconspicuous. In addition, it is possible to call attention to a trade mark or a trade dress formed on a pattern similar to the tread pattern in a superimposed manner, and to make the trade mark or trade dress stand out. Further, when the tire is mounted on a vehicle or the like, the tread pattern can be determined only by looking at the tire from the side.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a tire.

Claims (3)

[Claims] 1. A pneumatic tire comprising an annular decorative body on at least one side wall, and a pattern substantially the same as or similar to a tread pattern is formed on the decorative body. 2. The pattern formed on the decorative body has a depth of 0.
2. The pneumatic tire according to claim 1, wherein the diameter is about 3 to 3 mm. 3. A trade mark or a trade dress made up of characters, numbers, symbols, figures, or the like is further formed on the pattern formed on the decorative body in a superimposed manner. A pneumatic tire according to any one of claims 1 to 3.