KR-20260066294-A - REDUCING NOISE TYPE TIRE

KR20260066294AKR 20260066294 AKR20260066294 AKR 20260066294AKR-20260066294-A

Abstract

A noise-reducing tire is disclosed. The noise-reducing tire according to the present embodiment includes a tread that contacts a road surface, and a noise damper that is formed extending from one end to the other end along the circumferential direction of the tread and attached to the inner side of the tread. The noise damper may be provided by including a body portion formed along the circumferential direction of the tread, a first step portion formed by being recessed toward the center of the tread with the same width as the body portion and provided on both ends of the body portion, and a second step portion formed protruding toward the center of the tread with a narrower width than the first step portion and formed by being recessed toward the center of the tread with the same width as the body portion and provided on the center side of the first step portion.

Inventors

원대희
이진영
고정무
허성택

Assignees

한국타이어앤테크놀로지 주식회사

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (10)

Tread in contact with the road surface; and A noise damper is formed such that the other end extends from one end along the circumferential direction of the tread and is attached to the inner side of the tread; The above noise damper is A body portion formed along the circumferential direction of the above-mentioned tread, and A first step portion formed by being recessed in the direction of the center of the tread with the same width as the body portion and provided on both ends of the body portion, and A noise-reducing tire comprising a second step portion formed to protrude toward the center of the tread from the first step portion with a width narrower than the first step portion and formed to be recessed toward the center of the tread from the body portion, and provided on the center side of the first step portion.
In paragraph 1, The above noise damper is A noise-reducing tire arranged so that both sides are symmetrical with respect to the center in the width direction of the above-mentioned tread.
In paragraph 1, The above first step part A noise-reducing tire in which the height formed in the center direction of the tread is equal to or greater than half the height of the body portion.
In paragraph 1, The above first step part A noise-reducing tire in which the length formed in the circumferential direction of the above tread is formed to be the same as the length of the above second step portion.
In paragraph 1, The above first step part A noise-reducing tire having a circumferential length of 100mm or less formed along the above tread.
In paragraph 1, The above second step part A noise-reducing tire in which the width formed in the width direction of the tread is equal to or smaller than 1/3 of the width of the body portion.
In paragraph 1, The above noise damper is A noise-reducing tire formed as a single piece and arranged lengthwise along the circumferential direction of the tread, or divided into multiple pieces and arranged at equal intervals along the circumferential direction of the tread.
In paragraph 1, The above noise damper is A noise-reducing tire made of any one selected from the group consisting of cellulose-based, polyester-based, polyamide-based, acrylic-based, polyvinyl chloride-based, polyvinyl alcohol-based, and polyolefin-based materials, or a mixture of two or more of these.
In paragraph 1, The above noise damper is A noise-reducing tire further comprising an adhesive layer provided on the outer side in the direction of the center of the tread for bonding with the inner side of the tread.
In Paragraph 9, The above adhesive layer A noise-reducing tire comprising one or more selected from the group consisting of rubber adhesive, acrylic adhesive, silicone adhesive, and urethane adhesive.

Description

Reduced Noise Type Tire The present invention relates to a noise-reducing tire, and more specifically, to a noise-reducing tire capable of reducing road noise during driving by placing a noise damper on the inner side of the tire. Generally, when a vehicle travels at high speeds, vibration and noise are generated due to friction or impact between the tread and the road surface. This noise is amplified within the tire's internal cavity, causing discomfort to drivers and passengers or leading to problems such as noise pollution. Accordingly, various measures are being researched to address these tire noise issues. As a conventional technology for solving the noise problem of such tires, there is a noise-reducing tire mounted on a rim (R) that includes a noise damper (20) attached to the center of the inner surface in the width direction of the tread (10) and extending in the circumferential direction of the tread (10), as shown in FIG. 1. This conventional noise-reducing tire has the advantage of reducing tire noise by absorbing some of the noise amplified within the cavity formed between the tread (10) and the rim (R) by the noise damper (20), but there is a problem in that the noise damper (20) detaches from the tread (10) due to the bending and heat generation of the tread (10) that occurs while the vehicle is driving. In particular, as shown in FIG. 1, there is a problem in that the end side of the noise damper (20), which is formed in the circumferential direction of the tread (10), is initially detached from the tread (10). That is, in the conventional noise-reducing tire, the phenomenon of the noise damper (20) detaching from the tread (10) is such that both ends of the noise damper (20) are initially detached from the tread (10), and as time continues, the detachment range gradually increases toward the center of the noise damper (20). In order to solve this, methods to improve the adhesive strength of the adhesive layer (11) for fixing the noise damper (20) to the tread (10) and methods to increase the rigidity of the noise damper (20), which has weak rigidity and is provided with foam sponge, etc., were considered, but these solutions may cause additional problems such as significantly increasing the manufacturing cost of the tire or reducing the noise reduction effect. Figure 1 is a cross-sectional view showing a side cross-section of a conventional noise-reducing tire mounted on a rim. FIG. 2 is a perspective view of a noise-reducing tire according to one embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating a side cross-section of a noise-reducing tire according to one embodiment of the present invention. Figure 4 is a cross-sectional view illustrating the AA' section of Figure 3. FIG. 5 is a side view illustrating the deployed state of a noise damper of a noise-reducing tire according to one embodiment of the present invention. FIG. 6 is a front view illustrating the deployed state of a noise damper of a noise-reducing tire according to one embodiment of the present invention. FIG. 7a and 7b are, respectively, a diagram showing the stress distribution in the noise damper when a conventional noise-reducing tire is mounted on a vehicle and driving, and a diagram showing the stress distribution in the noise damper when a noise-reducing tire according to an embodiment of the present invention is mounted on a vehicle and driving. FIG. 8 is a cross-sectional view illustrating a side cross-section of a noise-reducing tire according to one embodiment of the present invention. The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. The following embodiments are presented to sufficiently convey the concept of the present invention to those skilled in the art to which the present invention pertains. The present invention is not limited to the embodiments presented herein and may be embodied in other forms. In order to clarify the present invention, the drawings may omit the illustration of parts unrelated to the description and may slightly exaggerate the size of components to aid understanding. FIG. 2 is a perspective view of a noise-reducing tire according to an embodiment of the present invention, FIG. 3 is a cross-sectional view showing a side cross-section of a noise-reducing tire according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view showing the A-A' cross-section of FIG. 3. In addition, FIG. 5 and FIG. 6 are a side view and a front view, respectively, showing the deployed state of a noise damper of a noise-reducing tire according to an embodiment of the present invention. In addition, FIG. 7a and FIG. 7b are drawings showing the stress distribution occurring in the noise damper when a conventional noise-reducing tire is mounted on a vehicle and driving, and the stress distribution occurring in the noise damper when a noise-reducing tire according to an embodiment of the pre