KR101212228B1

KR101212228B1 - Truck and bus radial tire

Info

Publication number: KR101212228B1
Application number: KR1020100123702A
Authority: KR
Inventors: 이원혁
Original assignee: 한국타이어월드와이드 주식회사
Priority date: 2010-12-06
Filing date: 2010-12-06
Publication date: 2012-12-13
Also published as: KR20120062440A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heavy duty tires, and more particularly to heavy duty tires having improved belt durability caused by lateral dragging of tires at low speeds and excessive cornering.
To this end, the present invention is a tread (1) and the ground to ground, carcass (2) to perform the skeletal role of the tire, belt layer (3) disposed between the tread (1) and carcass (2), In a heavy-duty tire comprising a bead 4 for attaching a tire to a rim of a vehicle, both ends of the first belt 3a and the fourth belt 3d of the belt layer 3 are tread 1. The inner belt is arranged to have a length smaller than between the both ends of the grooves 1a, and from the both ends of the first and fourth belts 3a and 3d to the ends of the second and third belts 3b and 3c, respectively. (5) is arrange | positioned, but this reinforcement belt 5 is structured so that it may be arrange | positioned by the clearance (L) of 5 mm space | interval.

Description

Heavy-duty tires {Truck and bus radial tire}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heavy duty tires, and more particularly to heavy duty tires having improved belt durability caused by lateral dragging of tires at low speeds and excessive cornering.

Heavy-duty tires mounted on trucks and buses include tread 1, carcass 2, belt layers 3 and beads 4, as shown in FIG. Wherein, the tread (1) is a rubber layer covering the outside of the belt layer (3) is a part which is grounded with the road surface, carcass (2) is a part that is framed by the tire, the belt layer (3) Multiple layers between the carcass (2) and the tread (1) to reduce the impact force of the tire received from the outside, while at the same time prevent the cracks and trauma from the tread (1) to directly reach the carcass (tread) 1) and carcass (2) to prevent the peeling, the bead (4) is to prevent the breakage of the shape caused by the injection air pressure and external force of the tire and also to prevent the breakdown or breakage during driving Stabilizes on the rim.

Heavy-duty tires having such a structure generate many bending deformations at the end grooves (Groove, 1a) of the tread (1) during excessive lateral drag, thereby deteriorating the durability of the belt layer (3), and causing excessive cornering at low speeds. When the shoulder is bent on the tread surface, the bend occurs on the carcass 2 inside the tread 1 and on the first belt layer of the belt layer. It worked very disadvantageously.

Accordingly, the present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a heavy-loaded tire which has a small bending deformation occurring at the end groove during excessive lateral drag, thereby strengthening the durability of the belt and the carcass.

The present invention for achieving the above object, the tread to the road surface and ground, carcass to perform the skeletal role of the tire, several belt layers disposed between the tread and the carcass, and attaching the tire to the rim In the heavy-duty tire provided with a bead, both ends of the first belt and the fourth belt of the belt layer is built-in less than the length between the grooves at both ends of the tread, the first and fourth belt Reinforcement belts are arranged from both ends to the ends of the second and third belts, respectively, and the reinforcement belts are arranged at 5 mm intervals of play.

Such a heavy duty tire according to the present invention has the advantage of reducing the bending deformation occurring in the end groove of the tread against excessive lateral drag generated during low speed and excessive cornering of the tire to improve the durability of the belt and carcass.

1 is a cross-sectional view of a heavy duty tire according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a heavy-duty tire according to the present invention. As shown in the drawing, the present invention includes a tread 1 for grounding and a road, a carcass 2 for performing a skeletal role of the tire, and the tread ( A heavy-load tire comprising a belt layer 3 disposed between 1) and a carcass 2 and a bead 4 for attaching a tire to a rim of a vehicle, wherein the first layer of the belt layer 3 is provided. Both ends of the belt 3a and the fourth belt 3d are internally arranged to have a smaller length than the gap between the both end grooves 1a of the tread 1, and the first and fourth belts 3a and 3d are Reinforcement belts 5 are disposed from both ends to the ends of the second and third belts 3b and 3c, respectively, which are characterized in that the reinforcement belts 5 are arranged at clearances of 5 mm intervals.

That is, the heavy-loaded tire of the present invention as described above has the first, first, Both ends of the four belts 3a and 3d are internally arranged to have a length smaller than between the grooves 1a of the both ends of the tread 1, and the respective ends of the first and fourth belts 3a and 3d are 5 mm apart. Reinforcing belts (5) having a clearance (L) of the second and third belts (3b, 3b, 3c) is extended to the ends of the structure is made of.

On the other hand, although not shown in the drawing, the reinforcing belt 5 disposed at both ends of the first and fourth belts 3a and 3d is preferably a clearance of 5 mm, but the clearance of the second is In addition, it may be arranged to gradually widen or narrow in proportion to the ends of the three belts (3b, 3c).

The heavy-loaded tire of the present invention is designed to reduce the bending deformation occurring at the end groove 1a of the tread 1 when the tire is laterally pulled, thereby improving durability of the belt layer 3 and the carcass 2.

1: Tread, 2: Carcass,
3: belt layer, 4: bead,
5: reinforced belt.

Claims

The tread 1 which grounds the road surface, the carcass 2 performing the skeletal role of the tire, the belt layer 3 disposed between the tread 1 and the carcass 2, and the tire In the heavy load tire comprising a bead (4) attached to the
Both ends of the first belt 3a and the fourth belt 3d of the belt layer 3 are internally arranged to have a smaller length than the gap between the both end grooves 1a of the tread 1. Reinforcing belts 5 are disposed from both ends of the fourth belts 3a and 3d to the ends of the second and third belts 3b and 3c, respectively. A heavy load tire, characterized in that arranged in.

The method of claim 1,
The clearance (ℓ) of the reinforcing belt (5) is a heavy-load tire, characterized in that arranged to be gradually widened in a constant proportion gradually toward the end of the second, third belt (3b, 3c).

The method of claim 1,
The clearance (ℓ) of the reinforcing belt (5) is a heavy-load tire, characterized in that arranged to be gradually narrowed in a constant proportion to the end of the second, third belt (3b, 3c).