CN114312165B - Sub-opening structure and run-flat tire - Google Patents
Sub-opening structure and run-flat tire Download PDFInfo
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- CN114312165B CN114312165B CN202210099264.1A CN202210099264A CN114312165B CN 114312165 B CN114312165 B CN 114312165B CN 202210099264 A CN202210099264 A CN 202210099264A CN 114312165 B CN114312165 B CN 114312165B
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- end point
- glue
- steel wire
- carcass ply
- reinforcing layer
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- 239000003292 glue Substances 0.000 claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 30
- 230000008093 supporting effect Effects 0.000 claims abstract description 30
- 239000004744 fabric Substances 0.000 claims abstract description 23
- 239000004677 Nylon Substances 0.000 claims abstract description 21
- 229920001778 nylon Polymers 0.000 claims abstract description 21
- 239000011324 bead Substances 0.000 claims abstract description 19
- 230000032798 delamination Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000020169 heat generation Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Landscapes
- Tires In General (AREA)
Abstract
The invention discloses a sub-opening structure and an explosion-proof tire, and belongs to the field of explosion-proof tires. The bead structure comprises triangular glue, a bead ring attached to the lower part of the triangular glue and supporting glue arranged on the inner side of the triangular glue; the height of the triangular glue is 55% -60% of the height of the lower section; the outside of the triangular glue and the bead ring is coated with a 1# carcass ply and a 2# carcass ply; a steel wire reinforcing layer is arranged between the 1# carcass ply and the 2# carcass ply outside the triangular glue; the upper end point of the steel wire reinforcing layer is 20-40 mm below the section horizontal axis, and the lower end point of the steel wire reinforcing layer is positioned at the horizontal position of the steel wire ring; and nylon curtain cloth is coated outside the No. 2 carcass curtain cloth and the supporting glue. The sub-opening structure and the explosion-proof tire are not easy to delaminate at the sub-opening part, and the durability of the tire is improved.
Description
Technical Field
The invention belongs to the field of run-flat tires, and particularly relates to a sub-opening structure and a run-flat tire.
Background
In the running process of an automobile, the tire provides friction force for the automobile through contact with the ground, and the safety of the tire has an important influence on the safety of the automobile. With the improvement of the living standard of people and the continuous enhancement of safety consciousness, the market demand of the safety tire is increasingly expanded.
Currently, self-supporting run-flat tires have become the main stream of the safety tire market, and in order to ensure the support property of run-flat, the tire sidewall opening part is composed of various components such as triangular rubber, supporting rubber, reinforcing layers and the like. However, excessive parts at the sub-opening part easily cause stress concentration, and in practical cases, delamination and poor durability at the sub-opening part are reflected.
Disclosure of Invention
The invention provides a sub-opening structure and an explosion-proof tire, which solve the technical problem that the sub-opening part of the existing explosion-proof tire is easy to delaminate, and improve the durability of the tire.
The invention provides a sub-opening structure, which comprises triangular glue, a bead ring attached to the lower part of the triangular glue and supporting glue arranged on the inner side of the triangular glue; the height is 55% -60% of the height of the lower section; the outside of the triangular glue and the bead ring is coated with a 1# carcass ply and a 2# carcass ply; a steel wire reinforcing layer is arranged between the outer side of the triangular glue and the 1# carcass ply; the upper end point of the steel wire reinforcing layer is 20-40 mm below the section horizontal axis, and the lower end point of the steel wire reinforcing layer is positioned at the horizontal position of the steel wire ring; nylon curtain cloth is coated outside the 1# carcass curtain cloth and the supporting glue; the inner end point of the nylon curtain cloth is positioned 10-30 mm above the lower end point of the supporting glue, and the outer end point of the nylon curtain cloth is positioned 10-30 mm above the upper end point of the steel wire reinforcing layer.
Preferably, the hardness of the triangular glue is HS 88-HS 92.
Preferably, the elastic modulus of the triangular glue is 6.8-7.2 Mpa.
Preferably, the steel wire angle of the steel wire reinforcing layer is arranged to be 40-50 degrees.
Preferably, the outer end point of the No. 1 carcass ply is positioned 50-60 mm above the end point of the apex.
Preferably, the outer end point of the No. 2 carcass ply is positioned 20-30 mm below the outer end point of the No. 1 carcass ply.
Preferably, the vertical distance between the lower end point of the supporting glue and the heel point is 10-15 mm, and the horizontal distance between the upper end point and the end point of the running surface is 10-15 mm.
The invention also provides an explosion-proof tire, which comprises any one of the sub-opening structures.
Preferably, the run flat tire further comprises a tread, cap ply, belt, sidewall, and innerliner.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a sub-opening structure and a run-flat tire.A steel wire reinforcing layer is arranged between a 1# carcass ply and a 2# carcass ply at the outer side of a triangular rubber, and the positions of upper and lower endpoints of the steel wire reinforcing layer are limited. By adding the steel wire reinforcing layer, the rigidity of the seam allowance part is greatly improved, and the supporting performance is improved.
And coating nylon curtain cloth outside the 1# carcass curtain cloth and the supporting glue, and limiting the inner and outer end points of the nylon curtain cloth. The nylon curtain cloth that sets up can wrap up bead ring, triangular glue, steel wire reinforcement layer and the lower extreme point of supporting glue wholly, wraps up wholly through the nylon reinforcement layer for each part at sub-mouth position is in systematic continuous state, makes each subsection have certain whole relativity and deformation linkage nature, avoids leading to the relative movement that the deformation is different and arouses under the stress state owing to the tensile and compression elastic modulus difference of each part, and then leads to delamination between each part.
The novel sub-opening structure provided by the invention disperses the positions of the end points of all the parts, reduces the end points near the bending points, further reduces the hot spots, reduces the relative deformation quantity among all the parts while ensuring the supportability, reduces the heat generation delamination among all the parts caused by the mutual displacement quantity, and further improves the durability of the tire.
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 do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view of an anti-explosion tire according to an embodiment of the present invention;
wherein: 1-tread, 2-cap ply, 3-belt ply, 4-sidewall, 5-1 1# carcass ply, 5-2 2# carcass ply, 6-nylon ply, 7-apex, 8-bead ring, 9-inner liner, 10-supporting rubber and 11-steel wire reinforcing layer.
Detailed Description
The present invention will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
It is apparent that the drawings in the following description are only some examples or embodiments of the present invention, and it is possible for those of ordinary skill in the art to apply the present invention to other similar situations according to these drawings without inventive effort. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases 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 to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the invention can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "a," "an," "the," and similar referents in the context of the invention are not to be construed as limiting the quantity, but rather as singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those 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 connection with the present invention are not limited 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 an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.
The embodiment of the invention provides a sub-opening structure and an explosion-proof tire, and referring to FIG. 1, the sub-opening structure provided by the embodiment of the invention comprises a triangular glue 7, a bead ring 8 attached to the lower part of the triangular glue 7 and a supporting glue 10 arranged on the inner side of the triangular glue 7; the height of the triangular glue 7 is 55% -60% of the height of the lower section; a steel wire reinforcing layer 11 is arranged between the 1# carcass ply 5-1 and the 2# carcass ply 5-2 at the outer side of the apex 7; a steel wire reinforcing layer 11 is arranged between the outer side of the triangular glue 7 and the 1# carcass ply 5-1; the upper end point of the steel wire reinforcing layer 11 is positioned 20-40 mm below the horizontal axis of the section, and the lower end point is positioned at the horizontal position of the steel wire ring 8; nylon curtain cloth 6 is coated outside the 1# carcass curtain cloth 5-1 and the supporting glue 10; the inner end point of the nylon cord fabric 6 is positioned 10-30 mm above the lower end point of the supporting glue 10, and the outer end point of the nylon cord fabric 6 is positioned 10-30 mm above the upper end point of the steel wire reinforcing layer 11.
In the invention, a steel wire reinforcing layer 11 is arranged between a 1# carcass ply 5-1 and a 2# carcass ply 5-2 outside a apex 7, and the upper end point of the steel wire reinforcing layer 11 is defined to be 20-40 mm below the horizontal axis of the section, and the lower end point is defined to be positioned at the horizontal position of a bead ring 8. According to the invention, the steel wire reinforcing layer 11 is added, so that the rigidity of the sub-opening part is greatly improved, and the supporting performance is improved.
In the invention, nylon cord fabric 6 is coated outside the 1# carcass cord fabric 5-1 and the supporting glue 10, and the positions of 10-30 mm above the lower end point of the supporting glue 10 of the inner end point of the nylon cord fabric 6 and 10-30 mm above the upper end point of the steel wire reinforcing layer 11 of the outer end point of the nylon cord fabric 6 are limited. The nylon cord fabric 6 provided in this embodiment can wrap the bead ring 8, the apex 7, the steel wire reinforcing layer 11 and the lower end point of the supporting glue 10 integrally, and the nylon reinforcing layer is used for wrapping the components at the seam allowance part systematically, so that the components have certain integral correlation and deformation linkage, and the relative movement caused by different deformation amounts in a stress state due to different tensile and compression elastic moduli of the components is avoided, thereby causing delamination between the components.
According to the invention, the steel wire reinforcing layer 11, the nylon cord 6, the 1# carcass cord 5-1 and the 2# carcass cord 5-2 are arranged, and the positions of all the structures are limited, so that the structures act in a coordinated manner, the positions of the end points of all the components are dispersed, the end points near the bending points are reduced, the hot spots are further reduced, the supporting property is ensured, the relative deformation quantity among all the components is reduced, the heat generation delamination among all the components caused by the mutual displacement is reduced, and the durability of the tire is further improved.
In the present invention, the apex 7 has a hardness of HS88 to HS92. In this embodiment, the super strong supporting apex 7 is used to limit the hardness of the apex 7 to HS88 to HS92, so that the supporting property of the bead portion can be improved, and the durability of run-flat can be improved.
In the present invention, the modulus of elasticity of the apex 7 is further 6.8 to 7.2Mpa. In this embodiment, the elastic modulus of the apex 7 is limited, so that the apex 7 is similar to the deformation of the carcass when being stressed, and the problem of delamination at the seam allowance caused by asynchronous deformation of the carcass and the apex 7 due to stress concentration is avoided.
In the present invention, further, the steel wire angle of the steel wire reinforcing layer 11 is arranged to be 40 to 50 °. In this embodiment, the steel wire angle is limited to be 40-50 °, which is the same as or similar to the carcass ply angle, and the oblique angle can effectively provide support for run-flat running in response to the support performance of the seam allowance in each direction.
In the invention, the outer end point of the No. 1 carcass ply 5-1 is positioned 50-60 mm above the upper end point of the apex 7. In this embodiment, the outer end point of the 1# carcass ply 5-1 is limited to keep a proper distance from the end point of the apex 7, so that the problem of stress concentration caused by the closer distance between the end point of the apex 7 and the end point of the ply can be effectively prevented, and the occurrence of delamination and bulge problems in the running process can be effectively prevented.
In the invention, the outer end point of the No. 2 carcass ply 5-2 is 20-30 mm below the outer end point of the No. 1 carcass ply 5-1. In this embodiment, the outer end points of the 2# carcass ply 5-2 are limited, so that the end points of the 1# carcass ply 5-1 and the 2# carcass ply 5-2 can be kept at a proper distance, the problem of stress concentration caused by the fact that the distance between the end points of the apex 7 and the ply end points is relatively close can be effectively prevented, and the occurrence of forehead delamination and bulge problems in the running process can be effectively prevented.
In the present invention, further, the vertical distance between the lower end point of the supporting glue 10 and the heel point is 10-15 mm, and the horizontal distance between the upper end point and the end point of the driving surface is 10-15 mm. The thickness of the supporting glue 10 at the thickest point is 6-10mm. In this embodiment, the thickness of the lower portion of the supporting glue 10 is 3-5mm thinner than that of the traditional supporting glue 10, and the bottom is designed to be slender, so that the size of the supporting glue 10 is greatly reduced, heat generation is lower, the thick glue position of the bead portion is more external, heat generated in the bending process is emitted to the outside instead of the tire cavity, the heat-dissipating capacity of the bead portion is greatly enhanced, damage to the bead portion caused by overhigh heat generation of the bead portion is prevented, and the durability of the tire is greatly improved.
The invention also provides an explosion-proof tire, which comprises any one of the sub-opening structures.
Preferably, the run flat tire further comprises a tread 1, a cap ply 2, a belt 3, sidewalls 4 and an inner liner 9.
Performance testing
1. Sub-opening structure and run-flat tire performance data
Taking 225/55R17 as an example, the specific scheme is shown in Table 1, and the performance test results are shown in Table 2.
Table 1 test protocol
Table 2 performance test data
As can be seen from table 2, the sub-opening structure provided by the invention is shown in scheme 1, the zero air pressure durability of the tire of the sub-opening structure is higher than that of a common anti-explosion tire, meanwhile, the damage disease of the tire is the fracture of supporting rubber, and the damage of the traditional anti-explosion tire is the fracture of triangular rubber and delamination, so that the sub-opening structure provided by the invention has higher durability.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. The sub-opening structure is characterized by comprising triangular glue, a bead ring attached to the lower part of the triangular glue and supporting glue arranged on the inner side of the triangular glue; the height of the triangular glue is 55% -60% of the height of the lower section; the outside of the triangular glue and the bead ring is coated with a 1# carcass ply and a 2# carcass ply; a steel wire reinforcing layer is arranged between the 1# carcass ply and the 2# carcass ply outside the triangular glue; the upper end point of the steel wire reinforcing layer is 20-40 mm below the horizontal axis of the section, and the lower end point of the steel wire reinforcing layer is positioned at the horizontal position of the steel wire ring; nylon curtain cloth is coated outside the 1# carcass curtain cloth and the supporting glue; the inner end point of the nylon curtain cloth is positioned at a position 10-30 mm above the lower end point of the supporting glue, and the outer end point of the nylon curtain cloth is positioned at a position 10-30 mm above the upper end point of the steel wire reinforcing layer; the outer end point of the No. 1 carcass ply is positioned 50-60 mm above the end point of the apex; the outer end point of the No. 2 carcass ply is positioned 20-30 mm below the outer end point of the No. 1 carcass ply; the vertical distance between the lower end point of the supporting glue and the heel point is 10-15 mm, and the horizontal distance between the upper end point and the end point of the running surface is 10-15 mm.
2. The bead structure according to claim 1, wherein the apex has a hardness of HS88 to HS92.
3. The bead structure according to claim 1, wherein the triangular glue has an elastic modulus of 6.8-7.2 mpa.
4. The seam allowance structure according to claim 1, wherein the steel wire reinforcing layers are arranged at a steel wire angle of 40-50 °.
5. An explosion-proof tire, characterized in that: comprising the sub-mouth structure according to any one of claims 1 to 4.
6. The run-flat tire of claim 5, further comprising a tread, cap ply, belt, sidewall, and innerliner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099264.1A CN114312165B (en) | 2022-01-27 | 2022-01-27 | Sub-opening structure and run-flat tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210099264.1A CN114312165B (en) | 2022-01-27 | 2022-01-27 | Sub-opening structure and run-flat tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114312165A CN114312165A (en) | 2022-04-12 |
| CN114312165B true CN114312165B (en) | 2024-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210099264.1A Active CN114312165B (en) | 2022-01-27 | 2022-01-27 | Sub-opening structure and run-flat tire |
Country Status (1)
| Country | Link |
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| CN (1) | CN114312165B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0825923A (en) * | 1994-07-15 | 1996-01-30 | Sumitomo Rubber Ind Ltd | Safety tire |
| US6082423A (en) * | 1997-06-09 | 2000-07-04 | The Goodyear Tire & Rubber Company | Low cost light weight radial tire |
| KR20000061603A (en) * | 1999-03-29 | 2000-10-25 | 신형인 | Run flat tire |
| JP2004231057A (en) * | 2003-01-30 | 2004-08-19 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2009018771A (en) * | 2007-07-13 | 2009-01-29 | Sumitomo Rubber Ind Ltd | Run-flat tire |
| CN204955934U (en) * | 2015-07-31 | 2016-01-13 | 安徽佳通乘用子午线轮胎有限公司 | It grabs radial tire that aerifys of land fertility performance to promote wetland |
| CN205292150U (en) * | 2016-01-11 | 2016-06-08 | 德轮橡胶股份有限公司 | All steel load rim of mouth reinforcing radial tire |
| JP2020029216A (en) * | 2018-08-24 | 2020-02-27 | 住友ゴム工業株式会社 | Pneumatic tire |
-
2022
- 2022-01-27 CN CN202210099264.1A patent/CN114312165B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0825923A (en) * | 1994-07-15 | 1996-01-30 | Sumitomo Rubber Ind Ltd | Safety tire |
| US6082423A (en) * | 1997-06-09 | 2000-07-04 | The Goodyear Tire & Rubber Company | Low cost light weight radial tire |
| KR20000061603A (en) * | 1999-03-29 | 2000-10-25 | 신형인 | Run flat tire |
| JP2004231057A (en) * | 2003-01-30 | 2004-08-19 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2009018771A (en) * | 2007-07-13 | 2009-01-29 | Sumitomo Rubber Ind Ltd | Run-flat tire |
| CN204955934U (en) * | 2015-07-31 | 2016-01-13 | 安徽佳通乘用子午线轮胎有限公司 | It grabs radial tire that aerifys of land fertility performance to promote wetland |
| CN205292150U (en) * | 2016-01-11 | 2016-06-08 | 德轮橡胶股份有限公司 | All steel load rim of mouth reinforcing radial tire |
| JP2020029216A (en) * | 2018-08-24 | 2020-02-27 | 住友ゴム工業株式会社 | Pneumatic tire |
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| Publication number | Publication date |
|---|---|
| CN114312165A (en) | 2022-04-12 |
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