Endurance-enhanced junction semi-steel radial white sidewall LTR (Low Temperature Ratio) tire

Abstract

The utility model provides an LTR tire with a durability-enhanced semi-steel radial white sidewall, which comprises a tire body comprising a first tire body, a second tire body and a third tire body, the first tire body and the second tire body are reversely wrapped on the steel wire ring, and the third tire body is positively wrapped on the outer side of the bottom of the steel wire ring; the tire sidewall comprises white tire sidewall rubber and tire sidewall rubber, and the white tire sidewall rubber and the tire sidewall rubber are attached to the outer side of the tire body; one side of the molding rubber is attached to the tire body; one part of the sidewall rubber is attached to one side, far away from the tire body, of the molding rubber, and the other part of the sidewall rubber is attached to the tire body. The stress of the tire is uniformly distributed under the structural support of the molding rubber and the tire body provided by the utility model, so that the durability of the tire is improved; the rigidity difference of the lower tire side part in the repeated bending deformation process of the tire is reduced, and the rigidity of the tire side part of the tire is ensured, so that the durability of the tire is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of tires, and in particular relates to a semi-steel radial white sidewall LTR tire with a durable reinforced structure. Background Art

[0002] Tires decorated with white rubber are commonly known as white sidewall tires. White sidewall tires can add beauty but are expensive and are often used in some luxury cars and ceremonial vehicles.

[0003] At present, most white sidewall specifications are designed with high apex rubber, which has a high hardness and the stress is mainly concentrated in the ring. The tire is prone to sidewall delamination. Sidewall delamination is mainly manifested as delamination and cracking between the sidewall and the cord layer, severe wire breakage, and melting. During repeated bending and deformation, the rigidity difference of the lower sidewall is large, and the rigidity of the tire sidewall cannot be guaranteed, affecting the durability of the tire. Utility Model Content

[0004] The utility model provides a semi-steel radial white sidewall LTR tire with a durable reinforced structure, aiming to solve the problem that the rigidity difference of the lower sidewall part of the white sidewall tire is large during repeated bending and deformation, the rigidity of the tire sidewall part cannot be guaranteed, and the durability of the tire is affected.

[0005] The utility model is realized by a semi-steel radial white sidewall LTR tire with durable reinforced structure, comprising:

[0006] A carcass, the carcass comprising a first carcass, a second carcass and a third carcass;

[0007] The first carcass and the second carcass are wrapped around the steel bead ring, and the third carcass is wrapped around the outside of the bottom of the steel bead ring;

[0008] The sidewall comprises a white sidewall rubber and a sidewall rubber, wherein the white sidewall rubber and the sidewall rubber are attached to the outer side of the carcass;

[0009] The profiled rubber has one side attached to the carcass; a portion of the sidewall rubber is attached to a side of the profiled rubber away from the carcass, and another portion of the sidewall rubber is attached to the carcass.

[0010] Preferably, the first carcass turned-up position is 5mm below the horizontal axis or 10mm above the horizontal axis, and the distance between the turned-up end point and the upper end point of the white glue is greater than 10mm, the second carcass turned-up position is 8-14mm away from the bottom of the wire ring, and the third carcass positive wrapping position is 0-4mm away from the bottom of the wire ring;

[0011] Preferably, a apex is provided at the upper end of the wire ring, and the carcass is wrapped around the outside of the apex.

[0012] Preferably, the height of the apex is not greater than 15 mm. The height design of the apex 4 is smaller than the height design of the traditional rubber core;

[0013] Preferably, a rubber is provided at the mouth of the second tire body, the lower end of the rubber is 10 mm away from the tire body edge, the width of the rubber is 40 mm, the rubber is attached to the outer side of the tire body 1 and connected to the sidewall rubber structure;

[0014] Preferably, a partial structure of the sub-gland rubber is attached to the outer side of the mold rubber away from the tire body.

[0015] Preferably, a cord is further provided on the outer side of the carcass, and the rubber profile is located between the cord and the sidewall; an inner liner is further provided on the side of the carcass away from the rubber profile.

[0016] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0017] The utility model provides a semi-steel radial white sidewall LTR tire with durable reinforced structure. The first carcass, the second carcass and the third carcass are wrapped around the outer side of the steel wire ring in a two positive and one negative manner, and the carcass is combined with a rubber mold with a special structure to enhance the supporting effect of the carcass on the sidewall. Under the structural support of the rubber mold and the carcass, the stress of the tire is evenly distributed, thereby improving the durability of the tire; reducing the rigidity difference of the lower sidewall part of the tire during repeated flexural deformation, ensuring the rigidity of the sidewall part of the tire, thereby ensuring the durability of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model provides a structural schematic diagram of a semi-steel radial white sidewall LTR tire with a durable reinforced structure.

[0019] Figure 2 The utility model provides a partially enlarged schematic diagram of the structure at position A of a semi-steel radial white sidewall LTR tire with a durable reinforced structure.

[0020] Figure 3 The utility model provides a schematic diagram of the cross-sectional structure of a semi-steel radial white sidewall LTR tire with a durable reinforced structure.

[0021] Figure 4 The utility model provides a partially enlarged schematic diagram of the B structure of a semi-steel radial white sidewall LTR tire with a durable reinforced structure.

[0022] Description of reference numerals:

[0023] 1. Carcass; 11. First carcass; 12. Second carcass; 13. Third carcass;

[0024] 2. Tip rubber; 3. Wire ring; 4. Triangle rubber; 5. White tire side rubber; 6. Side tire rubber; 7. Molded rubber. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] The utility model embodiment provides a semi-steel radial white sidewall LTR tire with a durable reinforced structure, such as Figure 1-Figure 4 As shown, the semi-steel radial white sidewall LTR tire with durable reinforced structure includes:

[0028] A carcass 1, wherein the carcass 1 comprises a first carcass 11, a second carcass 12 and a third carcass 13;

[0029] The bead ring 3 and the apex rubber 4, the first carcass 11 and the second carcass 12 are reversely wrapped around the bead ring 3, the third carcass 13 is wrapped around the outside of the bottom of the bead ring 3, and the apex rubber 4 is connected to the bead ring 3 and wrapped by the carcass 1;

[0030] The sidewall includes a white sidewall rubber 5 and a sidewall rubber 6, and the white sidewall rubber 5 and the sidewall rubber 6 are attached to the outer side of the carcass 1;

[0031] A rubber profile 7, one side of the rubber profile 7 is attached to the carcass 1, a portion of the sidewall rubber 6 is attached to a side of the rubber profile 7 away from the carcass 1, and another portion of the sidewall rubber 6 is attached to the carcass 1;

[0032] In the present application, the first carcass 11 is 5mm below the horizontal axis or 10mm above the horizontal axis, and the distance between the end point of the turn-up and the upper end point of the white rubber is greater than 10mm, the second carcass 12 is 8-14mm away from the bottom of the wire ring, and the third carcass is 0-4mm away from the bottom of the wire ring. The first carcass 11, the second carcass 12 and the third carcass 13 are wrapped on the outside of the wire ring 3 in a two-positive and one-negative manner, and the special structure of the rubber 7 is used to enhance the support effect of the carcass 1 on the sidewall. Under the structural support of the rubber 7 and the carcass 1, the stress of the tire is evenly distributed, and the durability of the tire is improved; the rigidity difference of the lower sidewall of the tire during repeated bending and deformation is reduced, and the rigidity of the sidewall of the tire is ensured, thereby ensuring the durability of the tire;

[0033] The outer side of the carcass 1 is also provided with a cord, and the rubber profile 7 is located between the cord and the sidewall; the inner side of the carcass 1 is also provided with an inner liner. During the processing, after the inner liner, the first carcass, and the second carcass cord are bonded, the cord is turned up with a buckle ring, and the turned-up lower pressing roller is pressed. The rubber profile 7 is bonded according to the inner or outer positioning light mark of the rubber profile 7, and then the white sidewall rubber 5 is bonded and the sidewall rubber 6 is pressed to complete the molding of a tire blank. The tire blank is composited with the second tire blank to complete the tire blank molding;

[0034] As a preferred implementation in this embodiment, the height of the apex 4 is designed to be 15 mm, which is smaller than the height of the traditional rubber core; the apex 4 is mainly used to fill and support the gap between the carcass and the wire ring 3, and the support requirements of the three-layer carcass structure are met by changing the structure of the apex 4;

[0035] In this embodiment, the type glue 7 is as follows Figure 1 The irregular arc structure is shown, and the rubber 7 is made of a flex-resistant and low-heat-generating formula rubber, which can reduce the heat generation in the tire sidewall;

[0036] As a preferred implementation in this embodiment, a sub-mouth rubber 2 is provided at the sub-mouth of the second tire body 12; the lower end point of the sub-mouth rubber 2 is 10 mm away from the edge of the tire body, the width of the sub-mouth rubber 2 is 40 mm, part of the structure of the sub-mouth rubber 2 is fitted to the outer side of the mold rubber 7, and the sidewall rubber 6 is fitted to the sub-mouth rubber 2.

[0037] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0038] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A semi-steel radial white sidewall LTR tire with durable reinforced structure, characterized in that: include: A carcass (1), wherein the carcass (1) comprises a first carcass (11), a second carcass (12) and a third carcass (13); A wire ring (3), wherein the first carcass (11) and the second carcass (12) are wrapped around the wire ring (3), and the third carcass (13) is wrapped around the outside of the bottom of the wire ring (3); A sidewall, the sidewall comprising a white sidewall rubber (5) and a sidewall rubber (6), the white sidewall rubber (5) and the sidewall rubber (6) being attached to the outer side of the carcass (1); A rubber mold (7), one side of the rubber mold (7) is bonded to the carcass (1); a portion of the sidewall rubber (6) is bonded to a side of the rubber mold (7) away from the carcass (1), and another portion of the sidewall rubber (6) is bonded to the carcass (1).

2. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 1, characterized in that: A apex rubber (4) is provided at the upper end of the wire ring (3), and the carcass (1) is wrapped around the outer side of the apex rubber (4).

3. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 2, characterized in that: The cross section of the first carcass (11) at the turned-up position is located 5 mm below the horizontal axis or 10 mm above the horizontal axis, and the distance between the turned-up end point and the upper end point of the white rubber is greater than 10 mm; The turned-up position of the second carcass (12) is 8 to 14 mm away from the bottom of the wire ring; The positive wrapping position of the third carcass (13) is 0 to 4 mm away from the bottom of the wire ring.

4. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 3, characterized in that: The height of the apex rubber (4) is no more than 15 mm.

5. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 4, characterized in that: A sub-mouth rubber (2) is provided at the sub-mouth of the second tire body (12), the lower end of the sub-mouth rubber (2) is 10 mm away from the tire body edge, and the width of the sub-mouth rubber (2) is 40 mm.

6. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 5, characterized in that: A partial structure of the sub-mouth rubber (2) is attached to the outer side of the mold rubber (7) away from the tire body (1).

7. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 6, characterized in that: The sidewall rubber (6) is partially structured to fit the sill rubber (2).

8. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 7, characterized in that: The outer side of the carcass (1) is also provided with a cord, and the rubber profile (7) is located between the cord and the sidewall.

9. A LTR tire with a durable reinforced semi-steel radial white sidewall according to claim 8, characterized in that: The carcass (1) is also provided with an inner lining layer on the side away from the rubber mold (7).

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