Auxiliary rubber bar, composite side wall with same and tire

Abstract

The invention provides an auxiliary rubber bar comprising a first side and a second side. The second side comprises a first position and a second position. A third position and a fourth position are arranged between the first position and the second position. The thickness of the auxiliary rubber bar is gradually increased from the first position to the fourth position. The thickness of the auxiliary rubber bar is gradually increased from the fourth position to the third position. The thickness of the auxiliary rubber bar is gradually reduced from the third position to the second position. Thethree layers including the auxiliary rubber bar, side wall rubber and bead rubber are combined into a three-layer composite side wall. The tire comprising the auxiliary rubber bar or the composite side wall has both excellent control performance and comfort performance.

Description

technical field

[0001] The present application belongs to the technical field of tires, and in particular relates to an auxiliary rubber strip, a composite sidewall containing it and a tire. Background technique

[0002] With the development of social economy and the improvement of people's living standards, the demand for cars is also increasing. Tire supporting factories have higher and higher requirements for the comprehensive performance of tires, not only requiring that the comfort cannot be reduced, but also the handling performance improve.

[0003] The existing tire wall structure relies on the height and hardness of the apex for lateral support. Increasing the height of the apex can improve the handling performance, but the comfort performance of the tire will be seriously lost, and the turn-up height of the carcass is also required to be increased. , thereby increasing the cost of the tire, while the lower apex height cannot meet the handling requirements. In add...

Examples

Embodiment 1

[0052]An auxiliary rubber strip, including a first side close to the inner wall of the bead and a second side close to the outer wall of the bead, the first side is substantially flat, and the second side includes a first position and a second position, the first position and the second position The two positions are respectively located at both ends of the auxiliary rubber strip, and the third position and the fourth position are arranged in turn from the second position to the first position; the thickness of the auxiliary rubber strip gradually increases from the first position to the fourth position, and the auxiliary rubber strip The thickness gradually increases from the fourth position to the third position; the thickness of the auxiliary rubber strip gradually decreases from the third position to the second position. The thickness H1 of the auxiliary rubber strip at the fourth position is 2.0mm, the thickness H2 of the auxiliary rubber strip at the third position is 4.0...

Embodiment 2

[0054] An auxiliary rubber strip, including a first side close to the inner wall of the bead and a second side close to the outer wall of the bead, the first side is substantially flat, and the second side includes a first position and a second position, the first position and the second position The two positions are respectively located at the two ends of the auxiliary rubber strip, from the second position to the first position in order of the third position and the fourth position; there is also a fifth position between the third position and the fourth position; the auxiliary rubber strip starts from the first position The thickness gradually increases from the first position to the fourth position, the thickness of the auxiliary rubber strip gradually increases from the fourth position to the fifth position, and the thickness between the fifth position and the third position of the auxiliary rubber strip is equal; the auxiliary rubber strip increases from the third positio...

Embodiment 3

[0056] A composite sidewall, including the auxiliary rubber strip in embodiment 1 or 2, and also includes sidewall rubber and spigot rubber, and the sidewall rubber includes the first side of the sidewall rubber near the inner wall of the bead and the tire near the outer wall of the bead The second side of the side glue, the rim glue includes the first side of the rim glue near the inner wall of the bead and the second side of the rim glue near the outer wall of the bead. The rim glue is divided into the first part and the second part, and the first part is embedded in the auxiliary Between the rubber strip and the sidewall rubber, the first side of the second part of the spigot rubber, the first side of the auxiliary rubber strip, and the first side of the sidewall rubber form a joint with the carcass, and the second part of the spigot rubber The second side of the sidewall and the second side of the sidewall rubber form the outer side portion of the composite sidewall. The s...

technical field

[0001] The present application belongs to the technical field of tires, and in particular relates to an auxiliary rubber strip, a composite sidewall containing it and a tire. Background technique

[0002] With the development of social economy and the improvement of people's living standards, the demand for cars is also increasing. Tire supporting factories have higher and higher requirements for the comprehensive performance of tires, not only requiring that the comfort cannot be reduced, but also the handling performance improve.

[0003] The existing tire wall structure relies on the height and hardness of the apex for lateral support. Increasing the height of the apex can improve the handling performance, but the comfort performance of the tire will be seriously lost, and the turn-up height of the carcass is also required to be increased. , thereby increasing the cost of the tire, while the lower apex height cannot meet the handling requirements. In add...

Examples

Embodiment 1

[0052]An auxiliary rubber strip, including a first side close to the inner wall of the bead and a second side close to the outer wall of the bead, the first side is substantially flat, and the second side includes a first position and a second position, the first position and the second position The two positions are respectively located at both ends of the auxiliary rubber strip, and the third position and the fourth position are arranged in turn from the second position to the first position; the thickness of the auxiliary rubber strip gradually increases from the first position to the fourth position, and the auxiliary rubber strip The thickness gradually increases from the fourth position to the third position; the thickness of the auxiliary rubber strip gradually decreases from the third position to the second position. The thickness H1 of the auxiliary rubber strip at the fourth position is 2.0mm, the thickness H2 of the auxiliary rubber strip at the third position is 4.0...

Embodiment 2

[0054] An auxiliary rubber strip, including a first side close to the inner wall of the bead and a second side close to the outer wall of the bead, the first side is substantially flat, and the second side includes a first position and a second position, the first position and the second position The two positions are respectively located at the two ends of the auxiliary rubber strip, from the second position to the first position in order of the third position and the fourth position; there is also a fifth position between the third position and the fourth position; the auxiliary rubber strip starts from the first position The thickness gradually increases from the first position to the fourth position, the thickness of the auxiliary rubber strip gradually increases from the fourth position to the fifth position, and the thickness between the fifth position and the third position of the auxiliary rubber strip is equal; the auxiliary rubber strip increases from the third positio...

Embodiment 3

[0056] A composite sidewall, including the auxiliary rubber strip in embodiment 1 or 2, and also includes sidewall rubber and spigot rubber, and the sidewall rubber includes the first side of the sidewall rubber near the inner wall of the bead and the tire near the outer wall of the bead The second side of the side glue, the rim glue includes the first side of the rim glue near the inner wall of the bead and the second side of the rim glue near the outer wall of the bead. The rim glue is divided into the first part and the second part, and the first part is embedded in the auxiliary Between the rubber strip and the sidewall rubber, the first side of the second part of the spigot rubber, the first side of the auxiliary rubber strip, and the first side of the sidewall rubber form a joint with the carcass, and the second part of the spigot rubber The second side of the sidewall and the second side of the sidewall rubber form the outer side portion of the composite sidewall. The s...

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