CN216805029U

CN216805029U - Single-rubber-seed supporting rubber and run-flat tire

Info

Publication number: CN216805029U
Application number: CN202220235585.5U
Authority: CN
Inventors: 王君; 徐伟; 韩俊宇; 刘杰; 刘继发; 苏明; 王伟; 张晨曦; 宋美芹; 马洁; 孙超; 孙桂芹; 翟明荣
Original assignee: Qingdao Doublestar Tire Industry Co Ltd
Current assignee: Qingdao Doublestar Tire Industry Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-24
Anticipated expiration: 2032-01-27

Abstract

The utility model provides a single-rubber-seed supporting rubber and a run-flat tire, belonging to the field of run-flat tires, wherein the single-rubber-seed supporting rubber is trapezoidal in shape; the height of the trapezoid is 3-15 mm; the projection length m1 of the left waist of the trapezoid on the lower bottom ranges from 5mm to 30 mm. The utility model solves the technical problems of poor comfort performance and stress concentration under zero-air-pressure running of the existing self-supporting body structure, and has the characteristics of good zero-air-pressure durability and comfort performance.

Description

Single-rubber-seed supporting rubber and run-flat tire

Technical Field

The utility model belongs to the field of run-flat tires, and particularly relates to a single-rubber-seed supporting rubber and a run-flat tire.

Background

With the rapid development of scientific technology and the improvement of the requirements of people on the performance of automobiles, the tires with common performance can not meet the requirements of people on the performance of safety, comfort, silence and the like of the tires. The prior run-flat tire ensures the zero-air pressure durability by adding the supporting rubber at the side part, but the mute comfort performance of the tire is reduced due to the addition of the strong and hard supporting rubber.

The radial rigidity of the tire wall of the existing run-flat tire is larger than the radial elasticity due to the structural design of the supporting rubber, the run-flat tire can realize the zero-air-pressure durability, but the running silence and comfort performance under the normal tire pressure is poor, so that the riding experience of a driver is poor. In addition, because the thickness of the supporting glue is designed unevenly, the supporting glue runs under zero air pressure to cause stress concentration and generate heat too fast.

SUMMERY OF THE UTILITY MODEL

The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the utility model.

The utility model provides a single-rubber-type supporting rubber and a run-flat tire, which solve the technical problems of poor comfort performance and stress concentration under zero-air-pressure running of the conventional self-supporting body structure and have the characteristics of good zero-air-pressure durability and comfort performance.

The utility model discloses a single-seed supporting adhesive which is trapezoidal in shape; the height of the trapezoid is 3-15 mm; the projection length m1 of the left waist of the trapezoid on the lower bottom ranges from 5mm to 30 mm.

In some of these embodiments, a of the left base angle of the trapezoid ranges from 12 ° to 20 °, and b of the right base angle of the trapezoid ranges from 5 ° to 15 °.

The utility model also discloses a run-flat tire which comprises the single-rubber-type supporting rubber in any technical scheme, wherein the lower bottom of the single-rubber-type supporting rubber is connected with the inner liner, and the upper bottom of the single-rubber-type supporting rubber is connected with the tire body.

In some of these embodiments, the projected length m2 of the right waist of the trapezoid on the lower sole is 5-10mm less than the width of the apex.

In some of these embodiments, the height of the trapezoid of the single seed support gel is 3-8mm when the aspect ratio of the run-flat tire is 35-50.

In some of these embodiments, the height of the trapezoid of the single gum type support gum is 8-12mm when the runflat tire has a aspect ratio of 55-65.

In some of these embodiments, the height of the trapezoid of the single gum type support gum is 10-15mm when the aspect ratio of the run-flat tire is greater than 65.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a single-rubber type supporting rubber and a run-flat tire, so that the tire has the characteristics of good zero-air-pressure durability, comfort performance and the like, and the technical problems of poor comfort performance and stress concentration under zero-air-pressure running of the conventional self-supporting body structure can be solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a single-seed supporting adhesive according to an embodiment of the present invention;

FIG. 2 is a schematic view of a crescent moon shaped supporting rubber structure;

FIG. 3 is a schematic structural view of a run-flat tire according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another single-type supporting adhesive according to an embodiment of the present invention;

description of the drawings: 1. single-glue seed supporting glue; 11. the left waist; 12. the right waist; 13. setting the bottom; 14. a left bottom corner; 15. a right base angle; 2. an inner liner layer; 3. a carcass; 4. and (5) triangular glue.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments provided by the present invention, belong to the protection scope of the present invention.

It is obvious that the drawings in the following description are only examples or embodiments of the utility model, from which it is possible for a person skilled in the art, without inventive effort, to apply the utility model also in other similar contexts. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one of ordinary skill in the art that the described embodiments of the present invention can be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the utility model are not to be construed as limiting in number, and may be construed to cover both the singular and the plural. The present invention relates to the terms "comprises," "comprising," "includes," "including," "has," "having" and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in the description of the utility model are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, "a and/or B" may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The terms "first," "second," "third," and the like in reference to the present invention are used merely to distinguish between similar objects and not necessarily to represent a particular ordering for the objects.

The embodiment of the utility model provides a single-seed glue supporting glue 1, and fig. 1 and 4 are schematic structural diagrams of the single-seed glue supporting glue 1 according to the embodiment of the utility model. Referring to fig. 1 and 4, the single seed supporting glue 1 is trapezoidal in shape; the height of the trapezoid is 3-15 mm; the projection length m1 of the left waist 11 of the trapezoid on the lower bottom 13 ranges from 5mm to 30 mm. As shown in fig. 2, the conventional support rubber is crescent-shaped, which can enhance the longitudinal rigidity of the wall when applied to the tire, and provide sufficient support for the tire when running in a zero-pressure state, but because the design thickness of the bead and the lower sidewall is relatively large, the deflection deformation is concentrated at the tire shoulder during the running in the zero-pressure state, the stress concentration of the tire shoulder is obvious, which easily causes thermal damage, and in addition, the radial elasticity of the whole sidewall is weakened due to the increase of the whole sidewall, the deflection of the sidewall is poor, and the impact force cannot be effectively absorbed during the normal running process, thereby resulting in poor driving comfort experience. This embodiment has injectd the support and has glued for the trapezium structure, trapezoidally because of its self stability, can guarantee the support capacity of tire under the zero atmospheric pressure state, trapezoidal face is smooth excessive simultaneously, the conduction of giving power provides a smooth curved surface, can effectually absorb the kinetic energy that the load of vertical direction produced, can turn into the kinetic energy of tire vertical direction heat and dispel, and then can the vibration of effectual reduction tire vertical direction, promote the travelling comfort of tire, in addition, inside can the insertion part for regular triangle-shaped because of its two sections clashes into, glue 4 with the triangle-shaped, matrix 3, parts such as belted layer use the laminating easily, the yield reduces in the production process child, prevent to vulcanize and drag into the phenomenon, production efficiency promotes.

Furthermore, the thickness of the traditional crescent supporting rubber is gradually reduced from the middle thick part to the side part (H1 is greater than H3 is greater than H2 is less than or equal to 18mm), and the Max thickness is more than 12 mm. The thickness of the trapezoid is limited in the embodiment, specifically, the thickness of the trapezoid is 3mm-15mm in an equal thickness design (H1 ═ H2 ═ H3) Max, the overall thickness of the support rubber is reduced, the flexibility is improved, the radial elasticity of the tire side portion is increased, the stress concentration of the tire shoulder portion is uniformly dispersed due to the thickness, the support rubber is transferred to the lower tire side, good diffusion is achieved due to heat generation caused by the stress concentration, the zero-air-pressure durability of the tire is improved, the shock absorption effect is good due to the increase of the longitudinal elasticity of the tire side portion during running under normal air pressure, the rim is not easy to damage, but the rigidity of the tire side portion with the Max thickness of less than 4mm is too small, and the support performance is very weak through simulation. The embodiment further limits the projection length m1 of the trapezoidal left waist 11 on the lower bottom 13 to be 5-30mm, and the reason is that if m1 is less than 5mm, the distance of the support rubber pad under the belted layer is too small, uneven tread occurs, radial vibration of the tread is too large, large vibration noise is generated, driving experience is poor, if m1 is more than 30mm, the distance of the support rubber pad under the belted layer is too large, the temperature of a tire shoulder is increased during high-speed driving, heat dissipation is difficult, and high-speed performance is affected. It is understood that the height of the trapezoid can also be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm and any point value within the range thereof, and that the value of m1 can also be 10mm, 15mm, 20mm, 25mm and any point value within the range thereof.

Further, the left base angle 14 of the trapezoid has a value in the range of 12-20, and the right base angle 15 of the trapezoid has a value in the range of 5-15. The range of the insertion angle a of the upper end of the support rubber is controlled to be 12-20 degrees, because if the thickness of the support rubber inserted into the bottoms of the belt layers is insufficient due to the angle a being less than 12 degrees, the edge of the belt layer is subjected to flexural deformation during running and is easy to pierce the tire body 3; if the thickness of the supporting rubber cushion with the angle a larger than 20 degrees is excessively large when the supporting rubber cushion enters the bottom of the belted layer, the heat dissipation is influenced by high-speed running, and the high-speed performance is not facilitated. The range of the insertion angle b of the lower end of the support rubber is controlled to be 5-15 degrees, and the design has the advantages that the support rubber is tightly attached to the triangular rubber 4, and stress shearing caused by different deformation between the support rubber and the triangular rubber 4 is reduced. It is understood that the value of a may also be any value within 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, 19 ° and ranges thereof, and the value of b may also be any value within 6 °, 7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 ° and ranges thereof.

As shown in fig. 3, on the other hand, the utility model discloses a run-flat tire, which comprises the single-rubber-type supporting rubber 1 in any technical scheme, wherein the lower bottom 13 of the single-rubber-type supporting rubber 1 is connected with the inner liner layer 2, and the upper bottom is connected with the tire body 3. Optionally, the projection length m2 of the trapezoidal right waist 12 on the lower bottom 13 is 5-10mm smaller than the width of the apex 4, which is beneficial to ensuring the coexistence of rigidity and toughness of the bead part, the rigidity can ensure the support performance of the tire, the zero air pressure durability is ensured, the toughness can ensure the comfort performance under normal air pressure, and the bead part is subjected to bending abnormity to prevent transverse fracture when the tire runs durably under zero air pressure, so that the thermal delamination of the shear stress concentration bead part is prevented.

The shape and the size of the single rubber type supporting rubber 1 are limited, so that the single rubber type supporting rubber 1 can be suitable for all models of passenger vehicle tires, and particularly, when the flatness ratio of the run-flat tire is 35-50, the height of the trapezoid of the single rubber type supporting rubber 1 can be 3-8 mm; when the flat ratio of the run-flat tire is 55-65, the height of the trapezoid of the single-seed supporting rubber 1 can be selected to be 8-12 mm; when the aspect ratio of the run-flat tire is more than 65, the height of the trapezoid of the single seed support rubber 1 may be selected to be 10-15 mm. Through the limitation, the supporting performance of the tire side part under the zero air pressure state can be ensured, and the integral comfort performance of the tire during normal running can be ensured.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a single kind of support is glued which characterized in that: the shape is trapezoid; the height of the trapezoid is 3-15 mm; the projection length m1 of the left waist of the trapezoid on the lower bottom ranges from 5mm to 30 mm.

2. The single seed support adhesive of claim 1, wherein: the value range of a of the left bottom angle of the trapezoid is 12-20 degrees, and the value range of b of the right bottom angle of the trapezoid is 5-15 degrees.

3. A run-flat tire characterized by: the single rubber seed supporting rubber comprises the single rubber seed supporting rubber of claim 1 or 2, wherein the lower bottom of the single rubber seed supporting rubber is connected with the lining layer, and the upper bottom of the single rubber seed supporting rubber is connected with the tire body.

4. The run-flat tire according to claim 3, wherein: the projection length m2 of the right waist of the trapezoid on the lower bottom is 5-10mm smaller than the width of the apex.

5. The run-flat tire according to claim 3, wherein: when the flat ratio of the run-flat tire is 35-50, the height of the trapezoid of the single rubber seed supporting rubber is 3-8 mm.

6. The run-flat tire according to claim 3, wherein: when the flat ratio of the run-flat tire is 55-65, the height of the trapezoid of the single seed supporting rubber is 8-12 mm.

7. The run-flat tire according to claim 3, wherein: when the flat ratio of the run-flat tire is more than 65, the height of the trapezoid of the single rubber seed supporting rubber is 10-15 mm.