JPH01226406A - Antiskid tyre - Google Patents

Abstract

PURPOSE:To provide antislip function equivalent to attachment of a chain by a method wherein an antiskid tread pattern is formed with a high tread part with a thick section and a low tread part with a thin section. CONSTITUTION:A number of high tread parts 3 with a thick section and a number of low tread parts 4 with a thin section are formed in a crown part 2 of an antiskid 1 through a peripheral groove 5 to form a tread pattern 6 formed with tread groups in three rows. A number of the high tread parts 8 with a thick section are formed in two side crown parts through a peripheral groove 9. Fine grooves 10 are formed in each tread surface. This constitution produces an antislip effect in which snow is gripped by means of a stepped part between high and low tread parts and excellent cut-into-frozen-surface is effected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an anti-slip tire that is effective for preventing vehicles, particularly automobiles, from skidding on snowy or frozen roads.

[Prior Art] Anti-slip tires currently in use, so-called snow tires, are susceptible to frozen surfaces and can easily become difficult to run due to temporary snow accumulation.

For this reason, an increasing number of automobiles are equipped with so-called snow spike tires, in which spike pins are driven into the tread of the anti-slip tire, during the winter.

As a result, dust pollution caused by snow spiked tires, increased fuel costs, and increased construction costs for repairing severe damage to road surfaces and traffic markings have become major problems.

Therefore, instead of snow spike tires 3) [! ! Total Pollution) It is desirable to attach rubber or metal anti-slip chains to snow tires, which cause relatively less severe damage to road surfaces and traffic markings.

[Problems to be Solved by the Invention] As mentioned above, it is desired to attach anti-skid chains to snow tires in order to prevent dust pollution and damage to road surfaces and traffic marking lines. Despite improvements in chains, the task of installing an anti-slip chain is extremely troublesome and is rarely carried out because it causes severe rattling and poor running performance.

Therefore, an object of the present invention is to provide an anti-slip tire equipped with a rubber anti-slip chain and equipped with functions such as road spacing.

[Means for Solving the Problems] In the anti-slip tire of the present invention, the anti-slip tread pattern of the crown portion is formed by a thick high tread portion and a thin low tread portion.

[Function] With the above configuration, the large number of high tread parts forming the tread pattern becomes like a rubber non-slip chain due to the difference in level between the high tread parts and the low tread parts, and an anti-slip function is obtained.

[Example] Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

1 to 3 show a first embodiment of the present invention, in which a crown portion 2 of an anti-slip tire 1 has a large number of thick high tread portions 3 and a large number of thin wall low tread portions 4, respectively. A tread pattern 6 consisting of three rows of tread groups is formed with grooves 5 in between. Further, in each of the sub-crown parts 7 on both sides, a large number of thick, high tread parts 8 are formed in a line with grooves 9 interposed in the tread pattern 6. In this case, the three rows of tread groups constituting the tread pattern 6 of the crown portion 2 are formed by repeating a large number of sets of one high tread portion 3 and two low tread portions 4 in each row. The high tread portions 3 are arranged adjacent to the low tread portions 4 in adjacent rows, and the high tread portions 3 are arranged around the entire periphery of each low tread portion 4. This embodiment shows a case in which the present invention is applied to a so-called studless tire, which has narrow grooves 10 formed on each tread surface and is made of relatively flexible rubber.

In this embodiment, a large number of high tread parts 3 constituting the tread pattern 6 of the crown part 2 protrude from the low tread surface as if a rubber chain is attached, and the high 1-red parts 3 and the low tread parts 4 The step t between the two grips the snow or bites into the frozen surface, providing a good anti-slip effect. Further, since the high tread portion 3 is disposed around each low tread portion 4, stable running is obtained by the tread surface of the high tread portion 3 surrounding the low tread portion 4, and the misapplication crown portion 7 is Since it is formed by the portion 3, stable cornering can be performed.

4 to 6 show a second embodiment of the present invention, in which the same parts as in the above embodiment are denoted by the same reference numerals. All of the central rows forming the tread pattern 6A of the crown portion 2 are high tread. The rows on both the left and right sides consist of a high tread portion 3 and a low tread portion 4. In this embodiment, the height difference between the high tread portion 3 and the low tread portion 4 provides an anti-slip effect, and since the center row is entirely formed of the high tread portion 3, stable running performance is obtained.

7 to 9 show a third embodiment of the present invention. In this example, the crown portion 2 of a so-called ordinary anti-slip tire 1 is comprised of a substantially double-shaped high tread portion 3A and a low tread portion 4A. The tread pattern 6B is composed of three rows of tread groups, and similarly to the above embodiment, the anti-slip effect due to the difference in level can be obtained.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible within the scope of the invention. For example, anti-slip tires can be applied to various vehicles such as passenger cars, buses, trucks, and other large work vehicles.
Moreover, the tread pattern can be applied to various types.

Further, a high tread portion and a low I/red portion may be formed in the sub-crown portion.

[Effects of the Invention] The present invention has a non-slip tread pattern in the crown portion formed by a thick high tread portion and a thin low tread portion,
It is possible to provide anti-skid tires equipped with rubber anti-skid chains and equipped with functions such as between roads.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a sectional view taken along line A-AIil in FIG. 1, and FIG.
The figure is a sectional view taken along the line 8-81 in FIG. 1, FIGS. 4 to 6 show a second embodiment of the present invention, FIG. 4 is a perspective view, and FIG.
6 is a sectional view taken along line D-D in FIG. 4, FIGS. 7 to 9 show a third embodiment of the present invention, and FIG.
The figure is a perspective view, and Figure 8 is E-El of Figure 7! I! The Ii plane view and FIG. 9 are cross-sectional views taken along the line FF in FIG. 7. 1... Anti-slip tire 2... Crown part 3.3A... High tread part 4.4△... Low tread part

Claims (1)

[Scope of Claims] An anti-slip tire characterized in that the anti-slip tread pattern of the crown portion is formed by a thick high tread portion and a thin low tread portion.