KR101208058B1

KR101208058B1 - Pneumatic vehicle tier

Info

Publication number: KR101208058B1
Application number: KR1020100100868A
Authority: KR
Inventors: 김경호
Original assignee: 한국타이어월드와이드 주식회사
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2012-12-04
Also published as: KR20120039260A

Abstract

The present invention is to solve the problem of damage to the tire caused by the impact caused by poor road surface conditions, comprising a tread, a sidewall and a bead portion, characterized in that the rubber buffer is installed on the inner side wall of the upper side of the bead filler Thus, while preventing the deterioration of ultra high performance (UHP) tire performance with low flattening ratio, it is effective in minimizing the increase in weight and preventing damage caused by the impact of road obstacles.

Description

Pneumatic vehicle tier

The present invention relates to a technique for protecting an external shock in a pneumatic tire for a vehicle.

The problem of tire damage due to the impact is that the impact caused by the obstacles on the road to the inner carcass code raises and damages of the protruding portion may have a significant impact on the driver's safety.

Except for run-flat tires, the structure that can protect the tires from external shocks is the Rim Protect Bar (RPB), which protects the rim where the tire is mounted and makes the product stand out. It is not a fundamental alternative to the problem of tire damage caused by impact caused by bad conditions of the road surface.

In the case of the prior art, a technique related to shoulder portion reinforcement and shoulder volume increase for improving tire wear performance has been introduced, which aims to protect a tire from external impact, but this is an object of the present invention. It is different.

In the case of techniques such as shoulder reinforcement, the purpose of protecting the tires from external shocks is the same, but this can not help to solve problems related to the carcass cord raise caused by the impact of the rim and also adversely affects the performance of the vehicle. Have possession.

In addition, in the case of a previously applied Tread Shoulder portion volume increasing technique for some Truck Bus Bus (TBR) tires, a concave or square foot shape is required. It is out of the design concept of Passenger Car Radial (UPR) and ultra high performance (UHP) tires based on the Round Foot Shape. There was a problem that the weight of the shoulder buckle (buckle) during the increase and the cornering has an adverse effect, which is not suitable for the ultra high performance (UHP) tire having a low flat ratio.

Application No. 10-2002-0071847 has introduced a technique for installing a lubrication layer 100 as shown in Figure 1 to prevent carcass cord cut-off caused by the impact of the rim. However, if the thickness of the lubrication layer 100 is thin, the effect is insignificant, and on the contrary, if the thickness is thick, the weight of the tire increases.

In solving the problem of tire damage due to the impact caused by poor road conditions, this problem is particularly common in ultra high performance (UHP) tire sizes where the flatness ratio of the tire is low. Like the technique of the method, it is possible to effectively solve the damage caused by the impact without deteriorating the performance of the UHP tire, and a technique that does not significantly increase the weight of the tire is required.

The present invention is arranged in the circumferential direction of the rubber buffer to cushion the impact from the road surface in the circumferential direction, while preventing the deterioration of tire performance, while minimizing the increase in weight and preventing damage caused by the impact of road obstacles To provide a technique to improve.

According to the present invention, while preventing the deterioration of ultra high performance (UHP) tire performance having a low flattening ratio, there is an effect of minimizing the increase in weight and preventing damage caused by the impact of obstacles on the road.

1 is an excerpted sectional view of a pneumatic tire for a vehicle of the related art.
2 is a perspective view of main parts of a pneumatic tire for a vehicle according to the present invention;
3 is a cross-sectional view of the rubber buffer.
Figure 4 is a perspective view of one embodiment of the support is inserted into the rubber buffer.

The present invention consists of a tread 1, sidewalls 2 on both sides of the tread 1, and bead portions 3 on both sidewall ends. It is characterized in that the rubber buffer 5 is installed. The inner side surface of the sidewall 2 above the bead filler 4 is a portion to which an impact is applied by a rim when the tire is impacted, and the rubber shock absorbing portion 5 is provided at the portion to which the impact is applied.

The rubber buffer portion 5 is composed of a curved surface portion 51 at the upper portion, a straight slope portion 52 at the lower portion, and a protrusion central portion 53 between the curved portion 51 and the straight slope portion 52. .

The protruding central portion 53 is provided with a support 54 having a wider upper part and a lower lower part, and having a trapezoidal shape in which the phenomenon seen in a direction perpendicular to the width direction and the vertical length direction, respectively. This structure absorbs the rubber deformed by the primary impact in the upper portion first in the support of the Sarariche shape 54 and secondaryly in the lower linear inclination portion 52 to perform a step-by-step buffering effect to cushion the effect Maximize.

The rubber buffer part 5 may take a ring shape extending in the circumferential direction of the tire, and may be formed intermittently as shown.

1. Tread
2. Sidewall
3. Bead portion
4. Bead Filler
5. Rubber buffer
51. Curved section
52. Straight slope
53. Support
54. Support

Claims

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In the tread and the sidewalls on both sides of the tread and the bead portions on both sidewall ends, the rubber buffer portion 5 protrudes from the inner sidewall of the upper side of the bead filler provided on the bead portion, and the rubber buffer portion ( 5) is composed of the upper curved portion 51, the lower straight inclined portion 52 and the protrusion central portion 53 between the curved portion 51 and the linear inclined portion 52, the protrusion central portion 53 The pneumatic tire for a vehicle according to claim 1, wherein a support 54 is provided with a wide upper portion and a narrow lower portion, and a support trap 54 having an inverted trapezoidal shape in a direction perpendicular to the width direction and the vertical length direction.

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