JPH0354004A - Pneumatic tire - Google Patents

Abstract

PURPOSE:To facilitate the identification of the different inner structure of tire even in a tire with the same tread pattern by applying colored idification marks to the grooves arranged at least in the circumferential direction of tread. CONSTITUTION:A tire 1 is provided with a plurality of main grooves 4 linear in the circumferential direction of a tread 2, and sub-grooves 5 in the circumferential direction of tire to cross the main grooves 4. In this case, idification marks 6 colored, for example, with yellow are applied to the bottoms of grooves in all of the main grooves 4. The idification marks 6 are colored so as to change in color at every internal structure of tire, change the number of the main grooves 4 colored, and cover the sub grooves 5. It is thus possible to facilitate the internal structure by means of the idification marks 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pneumatic tire. More specifically, the present invention relates to pneumatic tires whose types can be identified at a glance even if they have the same tread pattern. [Prior Art] In recent years, pneumatic tires have become increasingly diverse, and even if they look similar at first glance, internal structures such as belts and carcass may differ.

In this way, for example, in the case of tires with the same tread pattern but different internal structures, a concave and convex character symbol is attached to the sidewall, and by looking at this display mark, it is possible to distinguish between different types. It is now possible to do so.

However, since tires are generally stacked horizontally in multiple tiers, it is difficult to inspect the sidewalls as they are, and it is extremely troublesome as each tire must be lifted up and inspected. Additionally, tires are quite heavy, so handling them requires a lot of effort. [Problems to be Solved by the Invention] The present invention has been made in view of these conventional problems, and aims to provide a pneumatic tire that makes it possible to identify the type of tire just by observing its appearance. It is something to do.

[Means to solve the problem]

That is, the pneumatic tire of the present invention is characterized in that a colored identification mark is applied to a groove provided at least in the circumferential direction of the tread.

Here, as the colored identification mark, it is desirable to use, for example, paint with excellent weather resistance and heat resistance. Although this identification mark can be applied to the tire after it has been formed, it is preferable to apply it by transferring paint applied to the molded grooves of the mold during vulcanization or shaping of the tire. Further, it is desirable to use a color such as yellow, orange, or white, which has a high brightness and is easy to distinguish from a distance, as the identification mark.

Further, the identification mark may be colored in only one color, but it may also be colored in a combination of multiple colors. The identification mark is provided in a groove (leading) extending at least in the circumferential direction of the trend, preferably over the entire circumference thereof. Of course, it may be applied intermittently along the circumferential direction. In this way, the identification mark is placed in the groove extending in the circumferential direction, so that the identification mark can be immediately seen no matter how the tire is facing toward the worker. become able to.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The figure is a perspective view of a pneumatic tire according to the present invention, and this pneumatic tire 1 is provided with four linear main grooves 4 in the circumferential direction of a trend 2.

Further, a large number of sub-grooves 5 are provided at appropriate intervals in the tire circumferential direction so as to cross these four main grooves 4.

Identification marks 6 colored with yellow paint are applied to the groove bottoms of all the main grooves 4 of such a tire. This identification mark 6 is created by transferring paint applied to a mold (not shown) during vulcanization molding.

The identification mark 6 can be colored differently depending on the internal structure of the tire, the number of colored main grooves 4 can be changed, or even the minor grooves 5 can be colored.

Therefore, this pneumatic tire 1, as described above,
The internal structure of the tire can be identified by the identification mark 6 made in the main groove 4. [Effects of the Invention] As described above, the pneumatic tire of the present invention has a trendy colored identification mark on the bottom of the groove, so even if the tire has the same tread pattern, the internal structure of the tire can be easily identified. can be determined.

Therefore, if tires with different internal structures are mixed in a group of tires stacked in multiple stages, they can be easily extracted.

In addition, identification marks are placed on the bottom of the groove, making it possible to identify the internal structure of the tire even if the tread surface is worn. In the case where the identification mark is applied by transferring it from the mold when the tire is vulcanized, the identification mark can be provided without any special processing on the mold.

[Brief explanation of drawings]

The figure is a perspective view of a pneumatic tire according to the present invention. 1... pneumatic tire, 4...Leading, 5...minor groove, 6...Identification mark.

Claims (1)

[Claims] A pneumatic tire with a colored identification mark applied to grooves provided at least in the circumferential direction of the tread.