阅读说明：本技术 一种辅助胶条，包含其的复合胎侧以及轮胎 (Auxiliary rubber strip, composite tire side comprising auxiliary rubber strip and tire ) 是由 秦龙 林文龙 兰丽 王雪怡 王龙庆 张秀一 于 2019-10-25 设计创作，主要内容包括：本发明提供一种辅助胶条,包括为第一侧和第二侧,第二侧上包括第一位置和第二位置,第一位置和第二位置之间包括第三位置和第四位置；辅助胶条从第一位置向第四位置厚度逐渐增大,辅助胶条从第四位置到第三位置厚度逐渐增大；辅助胶条从第三位置向第二位置厚度逐渐减小。该辅助胶条与胎侧胶、子口胶三层复合制成三层复合胎侧,利用该辅助胶条或复合胎侧制成的轮胎,同时兼具优良的操控性能和舒适性能。(The invention provides an auxiliary adhesive tape, which comprises a first side and a second side, wherein the second side comprises a first position and a second position, and a third position and a fourth position are arranged between the first position and the second position; the thickness of the auxiliary adhesive tape is gradually increased from the first position to the fourth position, and the thickness of the auxiliary adhesive tape is gradually increased from the fourth position to the third position; the auxiliary strip decreases in thickness from the third position to the second position. This supplementary adhesive tape is glued with the child side, the rim of a mouth glues the three-layer complex side of making, utilizes the tire that this supplementary adhesive tape or compound side of a wall were made, has good control performance and comfort simultaneously concurrently.)

1. An auxiliary rubber strip, comprising a first side close to the inner wall of a tire bead and a second side close to the outer wall of the tire bead, wherein the first side is substantially planar, the second side comprises a first position and a second position, the first position and the second position are respectively located at two ends of the auxiliary rubber strip, and a third position is arranged between the first position and the second position; the auxiliary adhesive tape has a thickness gradually increasing from the first position to the third position, and the thickness gradually decreases from the third position to the second position.

2. An auxiliary strip according to claim 1, wherein a fourth position is provided between said third position and said first position, said auxiliary strip gradually decreasing in thickness from said third position to said fourth position with a first slope, said auxiliary strip gradually decreasing in thickness from said fourth position to said first position with a second slope, said first slope not being equal to said second slope, said auxiliary strip smoothly transitioning at said fourth position.

3. An auxiliary adhesive tape according to claim 2, wherein a fifth position is provided between the third position and the fourth position, the auxiliary adhesive tape has a thickness gradually increasing from the fourth position to the fifth position, and an intermediate section having the same thickness is formed between the fifth position and the third position.

4. An auxiliary strip according to claim 3, wherein said auxiliary strip has a thickness close to zero in said first and second positions, and wherein said first and second sides of said auxiliary strip intersect when said thickness is zero.

5. An auxiliary strip according to any one of claims 3 to 4, wherein said auxiliary strip has a thickness H1 of 1.0 to 2.5mm in said fourth position, a thickness H2 of 3 to 6mm in said third position, a distance L1 between said first and fourth positions of 10 to 20mm, a distance L2 between said third and second positions of 10 to 20mm, and a distance L3 between said fifth and third positions of 5 to 10 mm.

6. A composite sidewall for use in a bead ring wrap, comprising the auxiliary bead filler of any one of claims 1-4, further comprising a sidewall filler and a bead filler, wherein the bead filler comprises a bead filler first side adjacent to a bead inner wall and a bead filler second side adjacent to a bead outer wall, the bead filler is divided into a first portion and a second portion, the first portion is embedded between the auxiliary bead filler and the bead filler, the first side of the bead filler second portion forms an attachment portion with the first side of the auxiliary bead filler, the bead filler first side forms an attachment portion with the tire body, and the second side of the bead filler second portion forms an outer portion with the bead filler second side of the composite sidewall.

7. The composite sidewall of claim 6, wherein the sidewall rubber comprises a first sidewall rubber location distal from a tire bead and a second sidewall rubber location proximal to a tire bead, the bead rubber comprises a first bead rubber location distal from a tire bead and a second bead rubber location proximal to a tire bead, a distance L4 between the second location of the auxiliary strip and the second bead rubber location is 20-30mm, a distance L5 between the second sidewall rubber location and the second bead rubber location is 30-50mm, and L5 is greater than L4.

8. A tire comprising the composite sidewall of claim 7, further comprising a carcass, the composite sidewall having an abutment portion that abuts the carcass.

9. A tire, comprising the auxiliary rubber strip of claim 5, and further comprising a sidewall rubber, a bead filler, a carcass and a bead ring, wherein the sidewall rubber comprises a sidewall rubber first side close to the inner wall of the bead and a sidewall rubber second side close to the outer wall of the bead, the bead filler comprises a bead filler first side close to the inner wall of the bead and a bead filler second side close to the outer wall of the bead, the bead filler is divided into a first portion and a second portion, the first portion is embedded between the auxiliary rubber strip and the sidewall rubber, and the first side of the bead filler second portion forms a fitting part with the carcass together with the first side of the auxiliary rubber strip and the sidewall rubber first side.

10. A tyre according to claim 8 or 9, wherein said bead ring comprises a first end portion distal from the bead of the tyre and a second end portion proximal to the bead of the tyre, the distance L6 between the first position of said auxiliary strip and the maximum section width of the tyre being comprised between 0 and 20mm, and the distance L7 between the second position of said auxiliary strip and the first end portion of said bead ring being comprised between 0 and 20 mm.

Technical Field

The application belongs to the technical field of tires, and particularly relates to an auxiliary rubber strip, a composite tire side and a tire comprising the auxiliary rubber strip.

Background

Along with the development of social economy, the living standard of people is improved, so that the demand of cars is increased, the requirement of tire matching factories on the comprehensive performance of tires is increased, the requirement on comfort is not reduced, and the requirement on control performance is improved.

The existing tire wall structure is laterally supported by the height and hardness of the bead filler, the height of the bead filler is increased, the control performance can be improved, but the loss of the comfort performance of the tire is serious, and the turn-up height of the tire body is also required to be increased, so that the cost of the tire is increased, and the lower bead filler cannot meet the control requirement. In addition, the tyre of different specifications needs to be changed the apex of co-altitude not, and this laminating apex is changed frequently during making, and reduces production efficiency, also leads to the waste material that can't avoid because of changing frequently simultaneously and produces to increase the manufacturing cost of tyre.

Disclosure of Invention

To the deficiency of prior art, the present application provides an auxiliary rubber strip, composite sidewall and tire that contain it.

In order to solve the technical problem, the present application provides an auxiliary rubber strip, including a first side close to a bead inner wall and a second side close to a bead outer wall, where the first side is substantially a plane, the second side includes a first position and a second position, the first position and the second position are respectively located at two end portions of the auxiliary rubber strip, and a third position is arranged between the first position and the second position; the auxiliary adhesive tape has a thickness gradually increasing from the first position to the third position, and the thickness gradually decreases from the third position to the second position.

Preferably, a fourth position is arranged between the third position and the first position, the auxiliary adhesive tape gradually decreases in thickness from the third position to the fourth position with a first slope, the auxiliary adhesive tape gradually decreases in thickness from the fourth position to the first position with a second slope, the first slope is not equal to the second slope, and the auxiliary adhesive tape smoothly transitions at the fourth position.

Preferably, a fifth position is further arranged between the third position and the fourth position, the thickness of the auxiliary adhesive tape is gradually increased from the fourth position to the fifth position, and a middle section with the same thickness is formed between the fifth position and the third position.

Preferably, the thickness of the auxiliary strip in the first position and in the second position is close to zero, and when the thickness is zero, the first side and the second side of the auxiliary strip intersect.

Preferably, the thickness H1 of the auxiliary strip in the fourth position is 1.0-2.5mm, the thickness H2 of the auxiliary strip in the third position is 3-6mm, the distance L1 between the first position and the fourth position is 10-20mm, the distance L2 between the third position and the second position is 10-20mm, and the distance L3 between the fifth position and the third position is 5-10 mm.

The application still provides a compound side wall, can be used to cladding steel wire winding, include supplementary adhesive tape, still include side wall glue and child gum, the side wall glue is including the side wall glue first side that is close to the child limit inner wall and the side wall glue second side that is close to the child limit outer wall, the child gum is including the child gum first side that is close to the child limit inner wall and the child gum second side that is close to the child limit outer wall, the child gum divide into first portion and second portion, first portion embedding supplementary adhesive tape with between the side wall glue, the first side of child gum second portion with the first side of supplementary adhesive tape the first side of side wall glue first side form with the laminating portion of matrix laminating, the second side of child gum second portion with the side wall glue second side forms the outside portion of compound side wall.

Preferably, the side rubber comprises a side rubber first position far away from the tire bead and a side rubber second position close to the tire bead, the distance L4 between the second position of the auxiliary rubber strip and the side rubber second position is 20-30mm, the distance L5 between the side rubber second position and the side rubber second position is 30-50mm, and L5 is greater than L4.

The application also provides a tire containing the composite sidewall, and further comprises a tire body, and the fitting part of the composite sidewall is fitted with the tire body.

Preferably, the bead ring further comprises a bead ring, the bead ring comprises a first end far away from the tire bead and a second end close to the tire bead, the distance L6 between the first position of the auxiliary rubber strip and the maximum section width of the tire is 0-20mm, and the distance L7 between the second position of the auxiliary rubber strip and the first end of the bead ring is 0-20 mm.

The application still provides a contain supplementary adhesive tape's tire still includes sidewall rubber, child gum and matrix, the sidewall rubber is including the sidewall rubber first side that is close to the bead inner wall and the sidewall rubber second side that is close to the bead outer wall, the child gum is including the child gum first side that is close to the bead inner wall and the child gum second side that is close to the bead outer wall, the child gum divide into first portion and second portion, the first portion embedding supplementary adhesive tape with between the sidewall rubber, the first side of the second portion is glued to the child gum and first side, the sidewall rubber first side of supplementary adhesive tape form with the laminating portion of matrix laminating.

Preferably, the bead ring further comprises a bead ring, the bead ring comprises a first end far away from the tire bead and a second end close to the tire bead, the distance L6 between the first position of the auxiliary rubber strip and the maximum section width of the tire is 0-20mm, and the distance L7 between the second position of the auxiliary rubber strip and the first end of the bead ring is 0-20 mm.

The present application further provides an embodiment of applying the auxiliary strip and the composite sidewall to tire manufacturing.

Compared with the prior art, the beneficial effect of this application is:

(1) supplementary adhesive tape thickness is from both ends thickening in the middle of gradually, the effect of the anti-end point of wrapping of reinforcement has been played, on the one hand for the tire provides the height and the hardness that the side direction supported, improve the control performance of tire, can keep the comfort performance of tire simultaneously, on the other hand need not increase the height that the apex just can obtain high control performance and comfort performance, the apex frequently changes the apex in-process of laminating when avoiding producing, and the production efficiency is improved, the waste material that leads to because of changing has been reduced, the manufacturing cost of tire is reduced.

(2) The auxiliary rubber strip ensures the thickness and hardness of the rubber layer near the upper end point of the triangular rubber and the turn-up end point of the tire body, improves the control performance of the tire, ensures the overall comfort of the tire, and does not need to increase the turn-up height of the tire body.

(3) The auxiliary rubber strip thickness of the first position and the second position is close to zero, the sawtooth shape of the fitting part can be reduced, the surface of the tire body is smooth, the surface gap is reduced, the gas is prevented from remaining in the gap, and the use durability of the tire is improved.

(4) The three-layer composite tire side saves the process of respectively attaching the tire side glue and the sub-gate glue, and improves the production efficiency.

(5) The auxiliary rubber strip covers the first position of the cover opening rubber, and the total thickness of the composite tire side at the first position of the tire side rubber is increased, so that the reinforcing effect of each turn-up point is realized.

(6) The auxiliary rubber strip is arranged below the maximum section width of the tire and used for providing the height and the thickness of lateral support of the tire, the toughness of the part above the maximum section width of the tire is not influenced by the auxiliary rubber strip, and the overall deflection performance of the tire is maintained.

(7) The arrangement of the auxiliary rubber strip does not influence the thickness of the rubber material of the bead rubber, and the wear resistance of the tire bead is ensured.

Drawings

FIG. 1 is a schematic structural view of an auxiliary rubber strip according to an embodiment;

FIG. 2 is a schematic structural view of another embodiment of an auxiliary rubber strip;

FIG. 3 is a schematic representation of the structure of one embodiment of a composite sidewall 1;

FIG. 4 is a schematic representation of the structure of one embodiment of a composite sidewall 2;

FIG. 5 is a schematic structural view of one embodiment of a tire;

fig. 6 is a partially enlarged view of a portion B in fig. 5.

In the figure: 1 auxiliary gum strip, 101 first side, 102 second side, 1021 first position, 1022 second position, 1023 third position, 1024 fourth position, 1025 fifth position, 1026 middle section, 2 sidewall rubber, 201 sidewall rubber first side, 202 sidewall rubber second side, 203 sidewall rubber first position, 204 sidewall rubber second position, 3 bead rubber, 301 bead rubber first side, 302 bead rubber second side, 303 first portion, 304 second portion, 305 bead rubber first position, 306 bead rubber second position, 4 composite sidewall, 401 ply, 402 outer side, 5 tire, 501 tire body, 502 bead wire, 5021 first end, 5022 second end, 503 maximum cross-sectional width, 504 bead, 505 tire bead.

Detailed Description

The technical solutions of the present application are explained in detail below with reference to specific embodiments, however, it should be understood that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present application, it is to be understood that the terms "upper", "lower", "bottom", "inner", and the like, as used herein, are used in the orientation or positional relationship shown in fig. 5, which is for convenience and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiments described above are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application, and various modifications and improvements made to the technical solutions of the present application by those skilled in the art without departing from the spirit of the present application should fall within the protection scope defined by the claims of the present application.

As shown in fig. 1, an embodiment of the present application provides an auxiliary adhesive tape 1, and in order to better describe the structural relationship between the auxiliary adhesive tape and other components, the present application uses a cross-sectional view. For a tire with an inner tube, the portion of the tire where the bead is close to the inner tube is the inner wall of the bead, for a tire without an inner tube, the portion of the tire where the bead is close to the inner liner of the bead is the inner wall of the bead, and the portion of the tire where the bead 504 is exposed is the outer wall of the bead. Said auxiliary strip 1 comprises a first side 102 adjacent to the inner wall of the bead and a second side 102 adjacent to the outer wall of the bead, said first side 102 being substantially planar, said second side 102 comprising a first position 1021 and a second position 1022, said first position 1021 and said second position 1022 being respectively located at the two ends of said auxiliary strip 1, a third position 1023 being provided between said first position 1021 and said second position 1022; the auxiliary strip 1 has a thickness that gradually increases from the first position 1021 to the third position 1023, and the auxiliary strip 1 has a thickness that gradually decreases from the third position 1023 to the second position 1022. The thickness of supplementary adhesive tape is followed both ends and is gradually thickened to the middle part, and at least a part of middle part is used for covering the matrix and turns over the package extreme point, and the matrix turns over the package extreme point and is comparatively weak position in the tire structure, compares ordinary tire and passes through the sub-mouthful glue or the side of a tyre glue covers the matrix and turns over the package extreme point, and supplementary adhesive tape has played the effect that the reinforcement turned over the package extreme point. Add supplementary adhesive tape, on the one hand for the tire provides the height and the hardness of side direction support, improve the control performance of tire, can keep the comfort performance of tire simultaneously, on the other hand need not increase the height of apex and just can obtain high control performance and comfort performance, the apex of triangle of gluing in-process frequently changes when avoiding producing, has improved production efficiency, has reduced the waste material that leads to because of changing, reduces the manufacturing cost of tire.

And a fourth position is arranged between the third position and the first position, the thickness of the auxiliary rubber strip is gradually reduced from the third position to the fourth position by a first slope, the thickness of the auxiliary rubber strip is gradually reduced from the fourth position to the first position by a second slope, the first slope is not equal to the second slope, and the auxiliary rubber strip is in smooth transition at the fourth position. Optionally, regard as the slope reference with supplementary adhesive tape first side, first slope is greater than the second slope, on the tire section, is located the below and is close to the part of wheel hub, and supplementary adhesive tape is thicker, mainly plays the supporting role, is located the top and is close to the part of child hat, and adhesive tape thickness change tends to gently form elongated shape, helps improving the flexure resistance flexibility of tire.

Optionally, as shown in FIG. 2, a fifth position 1025 is further disposed between the third position 1023 and the fourth position 1024, the auxiliary adhesive strip 1 gradually increases in thickness from the fourth position 1024 to the fifth position 1025, and an intermediate section 1026 having the same thickness is formed between the fifth position 1025 and the third position 1023. The auxiliary rubber strip is provided with a middle section, so that the covering surface with the reinforcing effect comprises a tire body turn-up end point and an upper end point of the triangular rubber, and the thickness and the hardness of the rubber layer near the upper end point of the triangular rubber and the tire body turn-up end point are ensured. The source of ordinary tire side direction support mainly relies on the apex, and the height that increases the apex can promote and control the performance, but the whole comfort performance of tire can lose seriously, and the apex height increase must need increase the turn-up height of matrix simultaneously.

Optionally, the thickness H1 of the auxiliary adhesive strip 1 at the fourth position 1024 is 1.0-2.5mm, and the thickness H2 of the auxiliary adhesive strip 1 at the third position 1023 is 3-6 mm. For example, H1 may be 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, and so forth. For example, H2 may be 3.2mm, 3.6mm, 4.0mm, 4.4mm, 4.8mm, 5.2mm, 5.6mm, 5.8mm, and so forth. The distance L1 between the first position 1021 and the fourth position 1024 is 10-20mm, and the distance L2 between the third position 1023 and the second position 1022 is 10-20 mm. For example, L1 may be 12mm, 14mm, 16mm, 18mm, etc., and L2 may be 12mm, 14mm, 16mm, 18mm, etc.

Optionally, the distance L3 between the fifth position 1025 and the third position 1023 is 5-10 mm. For example, L3 is 6mm, 7mm, 8mm, 9 mm.

Optionally, the thickness of the auxiliary adhesive tape 1 at the first position 1021 and the second position 1022 is close to zero, and when the thickness is zero, the first side 101 and the second side 102 of the auxiliary adhesive tape 1 intersect. The thickness of the first position and the second position is close to zero, so that the sawtooth shape of the fitting part can be reduced, the surface of the tire body is smooth, the surface gap is reduced, gas is prevented from remaining in the gap, and the service durability of the tire is improved.

As shown in fig. 3-4, a second embodiment of the present application provides a composite sidewall 4 useful for a covered bead ring, comprising: the auxiliary rubber strip 1 further comprises sidewall rubber 2 and bead filler 3; the sidewall rubber 2 comprises a sidewall rubber first side 201 close to the inner wall of the bead 504 and a sidewall rubber second side 202 close to the outer wall of the bead 504, and the bead filler 3 comprises a bead filler first side 301 close to the inner wall of the bead 504 and a bead filler second side 302 close to the outer wall of the bead 504. The bead filler 3 is divided into a first portion 303 and a second portion 304, the first portion 303 is embedded between the auxiliary rubber strip 1 and the sidewall rubber 2, a first side of the second portion 304 of the bead filler forms a fitting portion 401 with the first side 101 of the auxiliary rubber strip and the first side 201 of the sidewall rubber, the fitting portion can be fitted with a tire casing, and a second side of the second portion 304 of the bead filler forms an outer side portion 402 of the composite sidewall 4 with the second side 202 of the sidewall rubber. Merging the sidewall rubber, the sub-gate rubber and the auxiliary rubber strip together through three composite pre-gate shapes which are matched with each other, and extruding from the three composite sidewall gates to obtain a three-layer composite sidewall; the composite tire side is attached to the tire body, so that the process of respectively attaching the tire side glue and the sub-gate glue is saved, and the production efficiency is improved.

Optionally, the sidewall rubber 2 comprises a sidewall rubber first position 203 far away from the tire bead 505 and a sidewall rubber second position 204 near the tire bead 505, the bead rubber 3 comprises a bead rubber first position 305 far away from the tire bead 505 and a bead rubber second position 306 near the tire bead 505, a distance L4 between the auxiliary rubber strip second position 1022 and the bead rubber second position 304 is 20-30mm, a distance L5 between the sidewall rubber second position 204 and the bead rubber second position 304 is 30-50mm, and L5 is greater than L4. For example, L4 may be 22mm, 24mm, 26mm, 28mm, 30mm, and so forth. For example, L5 is 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm, 46mm, 48mm, and so forth. The L4 is provided to ensure that after the composite sidewall wraps the bead, the distance between the second position of the auxiliary bead and the bead ring is controlled within a certain range so that the bead ring is mainly covered by the bead filler. The arrangement of L4 and L5 wraps the first position of the sub-gate rubber between the sidewall rubber and the auxiliary rubber strip, so that the overall thickness of the composite sidewall at the second position of the sidewall rubber is increased, and the reinforcing effect of each anti-wrapping point is realized. The L5 is larger than the L4, the second position of the auxiliary rubber strip is staggered with the second position of the sidewall rubber, and the phenomenon that the end points of the tire which cannot resist bending during running are overlapped to influence the whole bending resistance performance is prevented.

As shown in fig. 5, the third embodiment of the present application provides a tire 5, comprising the aforementioned composite sidewall 4, and further comprising a carcass 501, wherein the fitting portion 401 of the composite sidewall 4 is fitted to the carcass 501.

Alternatively, with reference to fig. 6, the tire 5 further comprises a bead ring 502, the bead ring 502 comprises a first end 5021 far away from the tire bead 505 and a second end 5022 close to the tire bead 505, the distance L6 between the first position 1021 of the auxiliary strip 1 and the maximum section width 503 of the tire is 0-20mm, and the distance L7 between the second position 1022 of the auxiliary strip 1 and the first end 5021 of the bead ring 502 is 0-20 mm. For example, L6 may be 2mm, 6mm, 10mm, 14mm, 18mm, etc., and L7 may be 2mm, 6mm, 10mm, 14mm, 18mm, etc. The tire has a maximum section width where the section width is D, as shown in fig. 5. The auxiliary rubber strip is arranged below the maximum section width of the tire and used for providing the height and the thickness of lateral support of the tire, the toughness of the part above the maximum section width of the tire is not influenced by the auxiliary rubber strip, and the overall deflection performance of the tire is maintained. Bead second end 5022 department, bead mouth glue is the bending form for the cladding tire bead, and supplementary adhesive tape sets up the position more than bead first end, avoids supplementary adhesive tape to extend to bead second end and bead mouth glue while crooked, because the width of tire bead mouth position is certain, supplementary adhesive tape and bead glue exist simultaneously and certainly can reduce the sizing material thickness that the bead was glued, and reduced the wearability of tire bead.

As shown in fig. 5 to 6, a fourth embodiment of the present application provides a tire 5 including: the auxiliary rubber strip 1 further includes sidewall rubber 2, bead filler 3 and a carcass 501. The sidewall rubber 2 includes a sidewall rubber first side 201 adjacent an inner wall of the bead 504 and a sidewall rubber second side 202 adjacent an outer wall of the bead 504. The bead filler 3 includes a bead filler first side 301 adjacent to an inner wall of the bead 504 and a bead filler second side 302 adjacent to an outer wall of the bead 504. The bead filler 3 is divided into a first portion 303 and a second portion 304, the first portion 303 is embedded between the auxiliary rubber strip 1 and the sidewall rubber 2, a first side of the second portion 304 of the bead filler forms a fitting portion 401 fitted with the carcass 501 with the first side 101 of the auxiliary rubber strip and the first side 201 of the sidewall rubber, and a second side of the second portion 304 of the bead filler forms an outer side portion 402 of the composite sidewall 4 with the second side 202 of the sidewall rubber.

Optionally, the tire 5 further comprises a bead ring 502, the bead ring 502 comprises a first end 5021 far away from the tire bead 505 and a second end 5022 close to the tire bead 505, the distance L6 between the first position 1021 of the auxiliary rubber strip and the maximum section width 503 of the tire is 0-20mm, and the distance L7 between the second position 1022 of the auxiliary rubber strip and the first end 5021 of the bead ring 502 is 0-20 mm. For example, L6 may be 2mm, 6mm, 10mm, 14mm, 18mm, etc., and L7 may be 2mm, 6mm, 10mm, 14mm, 18mm, etc.

The third embodiment is different from the fourth embodiment in that in the third embodiment, the auxiliary rubber strip and the sidewall rubber and bead filler are used after being formed into the composite sidewall and then are used by being attached to the carcass, and in the fourth embodiment, the auxiliary rubber strip and the sidewall rubber and bead filler are separately molded and then are used by being attached together.

The present application is described in detail with reference to the following examples, which are to be understood as the preferred embodiments of the present application, and not as limiting the scope of the present application.