CS253433B1 - Tyre tread design for passenger cars - Google Patents

Abstract

The tread pattern of the regular surface of a radial passenger car tire consisting of grooves and laminated grip blocks is formed by an alternating asymmetrically broken circumferential groove not connected to other grooves. Two extreme circumferential grooves run parallel to it, located on both sides of the central circumferential groove. From the extreme circumferential grooves, impassable grooves extend towards the central circumferential groove, thereby creating two strips of interconnected blocks on both sides of the central circumferential groove. At the same time, transversely broken grooves extend from the extreme circumferential grooves, which end in a wider circumferential shoulder groove, thus creating large irregularly broken grip blocks. These are divided by short grooves in 1/3 of the length. In the shoulder part, wide connecting grooves are connected to the wider circumferential shoulder groove by narrow connecting grooves. The tread pattern ends in the shoulder area with a narrow shoulder circumferential groove, into which wide connecting grooves lead.

Description

253433

BACKGROUND OF THE INVENTION The present invention relates to a conventional flat tire tread pattern for passenger cars and small commercial vehicles of radial design of various dimensions.

The design of the tread, together with the profile and the material composition of the tire, is all-inclusive. The most important of these are driving characteristics: road adhesion, noise, durability, rolling resistance, and the like. These qualities are a prerequisite for good driving and safe driving of cars. The radially-clad structures that are made and used are designed in the tread pattern of a variety of types, either as a tread pattern. circumferentially slotted ribs, which are separated from each other by wide grooves for draining water, belt treads, or a tread pattern with a plurality of individual interlocking blocks separated by transverse grooves, and also with or without lamellae and the like. The assortment of treads that are in operation, due to the growing demands of the automotive industry and the consumer, does not meet the requirements of maximum driving safety, especially on a paved road surface. It is also a requirement to provide a comfortable ride with low noise and minimal fuel consumption.

These requirements are addressed by the tread pattern of car tires for passenger cars and small commercial vehicles of radial design, according to the invention, the essence of which is as follows: The center of the asymmetrical perimeter groove runs through the tread pattern. At the same time, two more prominent circumferential grooves run out of which short, obliquely angled, non-continuous grooves emerge towards the center groove, thereby forming two strips of interconnected blocks along both sides of the central circumferential groove. Crosswise, spaced grooves facing the shoulder portion of the car tire are attached to the outer circumferential grooves. The transverse fold grooves, along with the outer circumferential arms, form large engagement blocks irregularly angled. These engagement blocks are divided by the yard by various narrow grooves with a stepped groove groove, with one narrow groove being pronged and each other being angled. The edge of the tread in the shoulder section of the car tire forms groove grooves interconnected by connecting grooves.

The tread pattern of a conventional automotive tire surface according to the invention shows improved adhesion to both dry and wet roads and thus better meets the requirements of maximum driving safety, especially on paved road surfaces. At the same time, it ensures optimum comfort when driving with minimal fuel consumption.

The subject matter of the invention is explained in more detail with reference to the accompanying drawings in which Fig. 1 is a schematic cross-sectional view of the housing and FIG. 2 is a schematic representation of a tread pattern of a conventional surface in the invention.

The radial shell for passenger cars comprises a pair of feet 13, a sidewall 14, and a tread pattern of a conventional shell 15.

The tread pattern of a conventional casing surface 15 is formed by a center asymmetrically angled circumferential groove 1 extending through the casing axis x and not connected to the other grooves. At the same time, two more prominent circumferential grooves 2, located on the sides of the central circumferential groove 1, run parallel to the central circumferential groove 1 of the non-passable groove 3. These form two-band interconnected blocks A at the sides of the central circumferential groove1. . At the same time, transversely angled grooves 4 extend from the outer peripheral grooves 2, which end up in the wider shoulder circumferential groove 5 in the shoulder portion of the car tire tread, thereby forming large engagement blocks B of irregular shape. Wide connecting grooves 8 are connected to the wider shoulder circumferential groove 5, which are connected by narrow connecting grooves 9. The tread is terminated by a narrow shoulder circumferential groove 10 in the shoulder time, into which the wide connecting grooves 8 result. they are divided into two parts by means of short paths 8, 7 in different shapes such that the short groove 6 is straight and the short groove 7 is looped. These two types of grooves alternate periodically around the circumference.

The large engagement blocks B and the interconnected blocks A are richly lamellated by the ace slats 11 and the broken slats 12. The large engagement blocks B have seven different widths from 20 mm to 28 mm, which are stretched around the circumference to form maximally uneven distribution. Also, the blocks A connected to each other have seven different sizes, irregularly alternating around the perimeter. The angles of the circumferential grooves 2, 3, 4 do not change over the entire circumference, but the angles of the circumferential grooves 1, 6, 7a vary irregularly over the circumference.

Said casing construction according to the invention can be modified for the barbecue dimensions of passenger car tires.

Claims (8)

SUBJECT A tread pattern of a conventional surface area for passenger cars of radial construction consisting of grooves and lamellar engagement blocks, characterized in that it consists of a central asymmetrically angled circumferential groove (1j not interconnected by other grooves and running parallel to it with two more pronounced peripheral grooves (2). both sides of the central circumferential groove (1) and extend therefrom towards the central circumferential groove (1) through the non-passable grooves (3), thereby forming two strips of interconnected blocks (AJ on both sides of the central circumferential groove (1), (2 j at the same time, transverse-angled grooves (4) extend up to the wider circumferential shoulder groove (3) in the shoulder part of the tread pattern, forming large engagement blocks (B) of irregular angular shape divided by about one third of the length by short grooves (6). 7], wherein in the shoulder part on dr OCT (5) feed the whole engagement grooves (8) linking the narrow connecting grooves (9) and the tread shoulder portion is completed shoulders narrow circumferential groove (10) into which issue the general coupling groove (8). The tread of a conventional surface of the skin, as claimed in claim 1, characterized in that the spaced-short grooves (6, 7) alternately rotate circumferentially, wherein the short groove (6) is straight and the short groove (7J is angled). We claim: Tread pattern of a conventional surface of the tire according to claim 1, characterized in that s-shaped slats (11i) are connected perpendicularly to the central circumferential groove (1) so that two are opposite each other, each on a different side of the groove. 4. The tread of a conventional tire surface as defined in claim 1, characterized in that the large engagement surfaces (BJ) have seven different widths ranging from 20 mm to 28 mm and are alternated to produce an uneven circumferential distribution. 5. The tread pattern of the normal surface area of claim 1, characterized in that the fracture angles ([alpha] / [alpha]) of the peripheral grooves (2) do not change circumferentially, the angles of fracture of all other circumferential grooves vary irregularly around the circumference. 6. The tread of a conventional surface of the jacket according to claim 1, characterized in that the central circumferential groove (1) and the outer circumferential grooves (2) are bent four times, while the shoulder circumferential grooves (10, 5) are bent twice. 7. The tread pattern of a conventional tire surface according to claim 2, characterized in that the short grooves (6, 7) have a stepped reduced depth relative to the transverse broken groove (4). 8. The tread pattern of a conventional sheath according to claim 6, characterized in that the bending angles (2, 32) of the wider shoulder groove (5) are different from the bending angles (3, 33) of the narrow shoulder groove (10).