CN114312155A - Composite support rubber and run-flat tire - Google Patents
Composite support rubber and run-flat tire Download PDFInfo
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- CN114312155A CN114312155A CN202210099290.4A CN202210099290A CN114312155A CN 114312155 A CN114312155 A CN 114312155A CN 202210099290 A CN202210099290 A CN 202210099290A CN 114312155 A CN114312155 A CN 114312155A
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 239000003292 glue Substances 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 29
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 239000010902 straw Substances 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract 2
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 239000011324 bead Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 13
- 238000005336 cracking Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The invention discloses a composite support rubber and an explosion-proof tire, and belongs to the field of explosion-proof tires. The compound support glue sequentially comprises a first support glue in a straw hat shape from top to bottom, a second support glue in a shape of an edge arc trapezoid and a third support glue in the straw hat shape, the thickness of the thickest point of a glue material of the second support glue is 5-12mm, and the Shore molar hardness and the tensile compression elastic modulus are arranged in a sequence from small to large: the first supporting glue, the second supporting glue and the third supporting glue. The invention is applied to the aspect of explosion-proof tires, solves the technical problems that the existing single-rubber type supporting rubber cannot meet the performance requirements of each part of the tire when being used for the explosion-proof tire, so that the tire has insufficient supporting performance and internal cracking in the later use process, and the tire has poor damping and oil leakage, poor comfort and tire burst in the actual driving process, and has the characteristics of good supporting performance, strong comfort and oil saving.
Description
Technical Field
The invention belongs to the field of run-flat tires, and particularly relates to a composite support rubber and a run-flat tire.
Background
In recent years, with the concern of safety of vehicles, run flat tires have become the first choice for more and more vehicle owners. The run-flat tire can guarantee that the vehicle still can support the vehicle and continue to travel after the problem such as tire burst appears in the driving process. In order to ensure the support property of the tire side, the support glue of the tire side of the run-flat tire is heavy, the support glue is thin, the support property of the tire side can be reduced, the support glue is too thick, and the comfort property of the tire can be reduced.
The inner support rubber of the side wall of the existing explosion-proof tire adopts a single rubber type design, and the single rubber type design has the advantages of simple and easy extrusion of a pre-opening shape and relatively simple process. But because tire tread, the tire side widest point and rim of a mouth position material kind and size diverse, the support gum, the belted layer, the elastic modulus diverse of matrix and apex is great even to differ, lead to the deflection and the stress concentration point diverse of each part when receiving the force of equidimension the same, consequently, the single gluey kind of design can't satisfy the performance requirement at each position of tire, and then lead to the tire to appear in the later stage use that support nature is not enough and inside fracture scheduling problem, can lead to the appearance of tire shock attenuation oil leak, the travelling comfort is poor and tire bursts out scheduling problem among the actual driving process.
Disclosure of Invention
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the invention.
The invention provides a composite support rubber and an explosion-proof tire, solves the technical problem that the durability, the support performance and the comfort performance of the tire cannot be considered at the same time because the performance requirements of each part of the tire cannot be met when the conventional single rubber type support rubber is used for the explosion-proof tire, and has the characteristics of good support performance, strong comfort performance and oil saving.
The invention discloses a composite support adhesive, which comprises the following components in sequence from top to bottom:
the first supporting glue is in a straw hat shape;
the second supporting glue is in a shape of an edge circular-arc trapezoid, and the thickness of the thickest point of the glue material is 5-12 mm;
the third supporting rubber is in a straw hat shape;
the Shore molar hardness and the tensile compression elastic modulus are arranged in sequence from small to large: the first supporting glue, the second supporting glue and the third supporting glue.
In some embodiments, the shore durometer hardness of the rubber material of the first supporting rubber is 55-60, the shore durometer hardness of the rubber material of the second supporting rubber is 60-65, and the shore durometer hardness of the rubber material of the third supporting rubber is 65-70.
In some of the embodiments, the modulus of elasticity in tension and compression of the rubber material of the first supporting rubber is 4.5 to 5.0MPa, the modulus of elasticity in tension and compression of the rubber material of the second supporting rubber is 5.0 to 5.5MPa, and the modulus of elasticity in tension and compression of the rubber material of the third supporting rubber is 5.5 to 6.0MPa at 25 ℃.
The invention also discloses an explosion-proof tire which comprises the composite support rubber in any technical scheme.
In some embodiments, the horizontal distance between the upper end point of the first support rubber and the end point of the belt layer is 15-25mm, and the vertical distance between the lower end point of the first support rubber and the upper end point of the first support rubber is 20-30 mm.
In some embodiments, the distance between the upper end point of the second support glue and the upper end point of the first support glue is 10-20mm, and the lower break point of the second support glue is 40-60mm below the horizontal axis of the section.
In some of these embodiments, the upper end point of the third support rubber is located 20-30mm below the horizontal axis of the section, and the lower end point of the third support rubber is located 4-10mm above the bead ring.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a composite support rubber and an explosion-proof tire, which can simultaneously meet the requirements of support and flexure resistance of tire shoulders, tire sides and seam allowance positions, have the characteristics of good support property, strong comfort and oil saving, have simple tooling, low requirement on an extruder, easily control the size of a semi-finished product, have simple production process, easily realize industrial production and improve the production efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a run-flat tire according to an embodiment of the present invention;
description of the drawings: 1. a first support adhesive; 11. an upper end point of the first supporting glue; 12. a first support glue lower end point; 2. a second supporting glue; 21. the upper end point of the second supporting glue; 22. a second support glue lower end point; 3. third supporting glue; 31. the upper end point of the third supporting glue; 32. and a third support glue lower end point.
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 invention and are not intended to limit the invention. 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 invention, from which it is possible for a person skilled in the art, without inventive effort, to apply the invention 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 invention. 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 invention 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 invention 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 an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: 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 invention provides a composite support rubber, and fig. 1 is a schematic structural diagram of a run-flat tire according to the embodiment of the invention. Referring to fig. 1, the composite support adhesive sequentially includes, from top to bottom, a first support adhesive 1 in a hat shape, a second support adhesive 2 in a trapezoid shape with an arc edge, and a third support adhesive 3 in a hat shape, the thickness of the thickest point of the adhesive material of the second support adhesive 2 is 5-12mm, and the arrangement sequence of the shore molar hardness and the tensile compression elastic modulus from small to large is as follows: the first support glue 1, the second support glue 2 and the third support glue 3. The composite support rubber is divided into three parts, and the support rubber at different positions meets the stress requirements of different parts of the tire. Specifically, the overall shape of the first support rubber 1 is a straw hat-shaped structure, the compression and tensile elastic modulus of the rubber material is similar to that of the tire body, optionally, the Shore molar hardness of the rubber material of the first support rubber 1 is 55-60, and the tensile and compressive elastic modulus is 4.5-5.0MPa at 25 ℃, so that the rigidity of the transition part between the tire tread and the tire side is mainly reduced, the smooth transition of the intersection part between the tire tread and the tire side in the driving process is ensured, the deformation of the tire shoulder part in the driving process is relatively smooth, the deformation process is relatively compliant, the overall rigidity of the tire is improved, and the comfort in the driving process of the tire is greatly improved; the overall shape of the second supporting rubber 2 is of an edge circular arc trapezoid structure, so that the composite position of the first supporting foot and the second supporting foot is smoother and more smoothly transited, the thickest point is about 5-12mm, the compression elastic modulus and the tensile elastic modulus of the rubber material are greater than those of the first supporting rubber 1, optionally, the Shore molar hardness of the rubber material of the second supporting rubber 2 is 60-65, the tensile compression elastic modulus is 5.0-5.5MPa at 25 ℃, the effect of the second supporting rubber 2 mainly provides the supporting performance of the tire in the run-flat running process, compared with the supporting rubber of a single rubber type, due to the existence of the first supporting rubber 1, most of 'comfort' functionality is born, the Shore molar hardness of the second supporting rubber 2 can be improved, but the thickness can be reduced, on the premise of the run-flat running supporting performance, the thickness of the supporting rubber is reduced, compared with the supporting rubber of the single rubber, the weight of the tire can be reduced, the rolling resistance of the tire is reduced, and the fuel consumption is reduced during the running of the vehicle; the shape of the third supporting rubber 3 is similar to that of the first supporting rubber 1, but the overall thickness is thicker than that of the first supporting rubber 1, the third supporting rubber is gently compounded with the second supporting leg, optionally, the Shore molar hardness of a rubber material of the third supporting rubber 3 is 65-70, the tensile compression elastic modulus is 5.5-6.0MPa at 25 ℃, the main function of the third supporting rubber 3 is mainly used for supporting the seam allowance part, the tensile compression elastic modulus of the supporting rubber is maximum and the tensile compression elastic modulus of the outer rubber is minimum by adjusting the tensile and elastic moduli of the supporting rubber, the triangle rubber and the outer rubber on the side wall, the elastic modulus of the triangle rubber is between the supporting rubber and the outer rubber, the overall strength of the seam allowance part is increased to the maximum extent, the supporting performance of the seam allowance part on a rim is ensured, and the elastic moduli of all main components of the seam allowance part are balanced, so that all parts are stressed more uniformly and the deformation amount is close in the stress loading process, the stress concentration of a certain part is prevented from being too high due to different deformation of each part, so that the material is broken and the parts are separated by delaminating, and the low-air-pressure durability of the tire is greatly improved. The support of this embodiment is glued and is used many kinds of support to glue, to tire shoulder, side wall and rim of a mouth position functional requirement, uses different performance to glue kind and size, and it is compared to glue kind support to glue alone, and the support nature is the same, but whole thickness is littleer, and weight reduction can reduce the holistic rolling resistance of tire, and the rolling resistance reduction means the vehicle oil consumption and reduces, and whole child wall attenuate softens simultaneously, and the radial rigidity of tire reduces greatly, and the travelling comfort promotes greatly.
The invention further provides a run-flat tire which comprises the composite support rubber listed in any one of the embodiments. Optionally, the horizontal distance between the upper end point 11 of the first support rubber and the end point of the belt layer is 15-25mm, the vertical distance between the lower end point 12 of the first support rubber and the upper end point 11 of the first support rubber is 20-30mm, and the overall shape of the first support rubber 1 is a straw hat-shaped structure. The distance between the upper end point 21 of the second support glue and the upper end point 11 of the first support glue is 10-20mm, the lower break point of the second support glue 2 is 40-60mm below the horizontal axis of the cross section, and the whole shape is of an edge circular arc trapezoid structure. The upper end point 31 of the third supporting rubber is positioned 20-30mm below the horizontal axis of the section, the lower end point 32 of the third supporting rubber is positioned 4-10mm above the steel wire ring, and the shape of the third supporting rubber is similar to that of the first supporting rubber 1. The anti-explosion tire has the characteristics of good support property, strong comfort and oil saving.
Example 1
The first supporting glue 1, the second supporting glue 2 and the third supporting glue 3 are sequentially arranged from top to bottom, and three glue materials are used, wherein the first supporting glue 1 is in a straw hat shape, the tensile and compression elasticity modulus is 4.5-5.0MPa (25 ℃), and the Shore Moore hardness is 55-60; the shape of the second supporting adhesive 2 is an edge arc trapezoid, the modulus of elasticity in tension and compression is 5.0-5.5MPa (25 ℃), the Shore molar hardness is 60-65, and the thickness of the thickest point is 6-10 mm; the third supporting rubber 3 is in the shape of a straw hat, the tensile and compression elastic modulus is 5.5-6.0MPa (25 ℃), and the Shore molar hardness is 65-70.
Example 2
The first supporting glue 1, the second supporting glue 2 and the third supporting glue 3 are sequentially arranged from top to bottom, the same glue type is used for the first supporting glue 1 and the second supporting glue 2, the tensile and compression elastic modulus of the first supporting glue 1 and the second supporting glue 2 is 4.8-5.0MPa (25 ℃), the Shore molar hardness is 58-60, the shapes of the first supporting glue 1, the second supporting glue 2 and the third supporting glue 3 are the same as those of the embodiment 1, and the glue material of the third supporting glue 3 is the same as that of the third supporting glue 3 of the embodiment 1.
Example 3
The first supporting glue 1, the second supporting glue 2 and the third supporting glue 3 are sequentially arranged from top to bottom, the second supporting glue 2 and the third supporting glue 3 are of the same glue type, the tensile and compression elastic modulus of the second supporting glue 2 and the third supporting glue 3 is 5.5-5.8MPa (25 ℃), the Shore molar hardness is 65-68, the shapes of the first supporting glue 1, the second supporting glue 2 and the third supporting glue 3 are the same as those of the embodiment 1, and the glue material of the first supporting glue 1 is the same as that of the first supporting glue 1 in the embodiment 1.
Comparative example 1
The first supporting glue 1, the second supporting glue 2 and the third supporting glue 3 are made of the same glue material, namely the supporting glue is made of a single glue material, the tensile and compression elasticity modulus is 5.8-6.2MPa (25 ℃), the Shore molar hardness is 68-72, and the thickest point is 5mm thicker than that of the embodiment 1.
Performance testing
The run-flat endurance, rolling resistance and radial stiffness of the tires were tested with reference to national standards and ISO28580 to verify run-flat ride capacity, comfort and fuel economy of the tires, and the results are shown in table 1.
Table 1 results of performance testing
| Item | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Zero air pressure driving | 68min | 64min | 65min | 62min |
| Coefficient of rolling resistance (N/KN) | 8.5 | 8.8 | 8.9 | 9.2 |
| Radial rigidity (N/mm) | 224 | 228 | 232 | 246 |
The results show that the tire under-inflation durability of the support rubber with three different rubber materials is similar to that of the support rubber with single rubber thick, but the rolling resistance and the radial rigidity are greatly improved, and the rolling resistance and the radial rigidity are greatly improved in vehicles, so that the oil saving performance and the comfort are greatly improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification 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 invention. 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 (7)
1. The utility model provides a compound support is glued which characterized in that from last to including in proper order down:
the first supporting glue is in a straw hat shape;
the second supporting glue is in a shape of an edge circular-arc trapezoid, and the thickness of the thickest point of the glue material is 5-12 mm;
the third supporting rubber is in a straw hat shape;
the Shore molar hardness and the tensile compression elastic modulus are arranged in sequence from small to large: the first supporting glue, the second supporting glue and the third supporting glue.
2. The composite support rubber of claim 1, wherein the rubber material Shore Moire hardness of the first support rubber is 55-60, the rubber material Shore Moire hardness of the second support rubber is 60-65, and the rubber material Shore Moire hardness of the third support rubber is 65-70.
3. The composite support adhesive of claim 1, wherein the modulus of elasticity in tension and compression of the rubber material of the first support adhesive is 4.5-5.0MPa, the modulus of elasticity in tension and compression of the rubber material of the second support adhesive is 5.0-5.5MPa, and the modulus of elasticity in tension and compression of the rubber material of the third support adhesive is 5.5-6.0MPa at 25 ℃.
4. A run flat tire comprising the composite support rubber according to any one of claims 1 to 3.
5. A run-flat tire according to claim 4, wherein the horizontal distance between the upper end point of the first support rubber and the end point of the belt is 15 to 25mm, and the vertical distance between the lower end point of the first support rubber and the end point of the first support rubber is 20 to 30 mm.
6. A run-flat tire according to claim 5, wherein the distance between the upper end point of the second support rubber and the upper end point of the first support rubber is 10-20mm, and the lower break point of the second support rubber is 40-60mm below the horizontal axis of the section.
7. A run flat tire according to claim 4, wherein the upper end point of the third support rubber is located 20 to 30mm below the horizontal axis of the section and the lower end point of the third support rubber is located 4 to 10mm above the bead ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099290.4A CN114312155A (en) | 2022-01-27 | 2022-01-27 | Composite support rubber and run-flat tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099290.4A CN114312155A (en) | 2022-01-27 | 2022-01-27 | Composite support rubber and run-flat tire |
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| Publication Number | Publication Date |
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| CN114312155A true CN114312155A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210099290.4A Pending CN114312155A (en) | 2022-01-27 | 2022-01-27 | Composite support rubber and run-flat tire |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002211216A (en) * | 2001-01-12 | 2002-07-31 | Sumitomo Rubber Ind Ltd | Run-flat tire |
| JP2007331436A (en) * | 2006-06-12 | 2007-12-27 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| CN101432128A (en) * | 2006-04-24 | 2009-05-13 | 株式会社普利司通 | Method of producing pneumatic tire and pneumatic tire |
| JP2009126410A (en) * | 2007-11-26 | 2009-06-11 | Sumitomo Rubber Ind Ltd | Run flat tire |
| JP2009280104A (en) * | 2008-05-22 | 2009-12-03 | Yokohama Rubber Co Ltd:The | Pneumatic run-flat tire |
| CN204998264U (en) * | 2015-09-17 | 2016-01-27 | 青岛双星轮胎工业有限公司 | Novel load radial tire triangle is glued to be constructed |
| CN112124010A (en) * | 2020-09-30 | 2020-12-25 | 赛轮集团股份有限公司 | Runflat tire |
-
2022
- 2022-01-27 CN CN202210099290.4A patent/CN114312155A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002211216A (en) * | 2001-01-12 | 2002-07-31 | Sumitomo Rubber Ind Ltd | Run-flat tire |
| CN101432128A (en) * | 2006-04-24 | 2009-05-13 | 株式会社普利司通 | Method of producing pneumatic tire and pneumatic tire |
| JP2007331436A (en) * | 2006-06-12 | 2007-12-27 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2009126410A (en) * | 2007-11-26 | 2009-06-11 | Sumitomo Rubber Ind Ltd | Run flat tire |
| JP2009280104A (en) * | 2008-05-22 | 2009-12-03 | Yokohama Rubber Co Ltd:The | Pneumatic run-flat tire |
| CN204998264U (en) * | 2015-09-17 | 2016-01-27 | 青岛双星轮胎工业有限公司 | Novel load radial tire triangle is glued to be constructed |
| CN112124010A (en) * | 2020-09-30 | 2020-12-25 | 赛轮集团股份有限公司 | Runflat tire |
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Application publication date: 20220412 |