CN114290858A - Run-flat tire - Google Patents
Run-flat tire Download PDFInfo
- Publication number
- CN114290858A CN114290858A CN202210205963.XA CN202210205963A CN114290858A CN 114290858 A CN114290858 A CN 114290858A CN 202210205963 A CN202210205963 A CN 202210205963A CN 114290858 A CN114290858 A CN 114290858A
- Authority
- CN
- China
- Prior art keywords
- tire
- reinforcing layer
- run
- layer
- rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Tires In General (AREA)
Abstract
The invention belongs to the field of semi-steel radial car tire design, and relates to a run-flat tire, which comprises a crown part, shoulder parts, a sidewall part and a pair of bead parts, wherein the crown part extends along the circumferential direction of the tire and is annular, the shoulder parts are positioned at two sides of the crown part, the sidewall part is positioned at the lower side of the shoulder part, the pair of bead parts are arranged at the inner side of the sidewall part in the radial direction of the tire, 1-2 layers of fiber cord fabrics are laid between the pair of bead parts, two ends of the fiber cord fabrics are respectively wound from the inner side of the tire to the outer side of the bead part, triangular rubber strips are arranged at the upper peripheral sides of the bead parts, an air leakage prevention layer is arranged in the area between the pair of bead parts, a plurality of layers of steel wire cord fabrics are arranged between the lower surface of the crown part and the fiber cord fabrics, and a reinforcing layer is arranged between the fiber cord fabrics of the shoulder part and the side wall part and the air leakage prevention layer. The invention can effectively play the role of buffering the deflection deformation of the reinforcing layer when used under the condition of low pressure.
Description
Technical Field
The invention relates to the field of design of semi-steel radial car tires, in particular to a run-flat tire.
Background
The types of tires currently on the market are mainly the common type and run-flat tires. Although the common type of passenger car tires has some comfort, there is some risk of safety.
Once the air leaks from the common tire, the vehicle can not move forward continuously, and a driver does not control the steering wheel easily, so that safety accidents are easy to happen; although the safety of the vehicle is greatly improved by the run-flat tire, the comfort of the tire in the use process is poor, and the tire cannot completely meet the requirements of most of cars in the current market.
Disclosure of Invention
In order to solve the problem of poor comfort in the use process of the run-flat tire in the prior art, the invention provides the tire under the condition of low air pressure, which not only can meet the safety performance and enable the vehicle to continue running, but also has certain comfort and is suitable for most vehicles.
The technical scheme adopted by the invention is as follows:
a run-flat tire characterized by: the tire comprises a crown part, shoulder parts, a sidewall part and a pair of bead parts, wherein the crown part extends along the circumferential direction of the tire to form a ring shape, the shoulder parts are positioned at two sides of the crown part, the sidewall part is arranged at the lower side of the shoulder part, the pair of bead parts are arranged at the inner side of the tire radial direction, 1-2 layers of fiber cord fabrics are paved between the pair of bead parts, two ends of the fiber cord fabrics respectively wind around a bead ring from the inner side of the tire to the outer side, a triangular rubber strip is arranged at the upper peripheral side of the bead ring of the pair of bead parts, an air leakage prevention layer is arranged in the area between the pair of bead parts, a plurality of layers of steel cord fabrics are arranged between the lower side of the crown part and the fiber cord fabrics, and a reinforcing layer with a special structure in section is arranged between the fiber cord fabrics of the shoulder part and the side wall part and the air leakage prevention layer.
Preferably, the reinforcing layer is arranged on the inner side of the air leakage preventing layer near the tire shoulder, extends towards the tire crown part and the tire side part respectively, and gradually reduces in thickness.
Preferably, the hardness of the rubber material of the reinforcing layer is greater than that of the sidewall rubber.
Preferably, a reinforcing layer is applied to the outer side of the fiber cord layer in the range of 15% -70% of the height SH of the section of the tire, the width of the reinforcing layer is more than or equal to 55% of the height of the section of the tire, the supporting effect is achieved, and the safety performance under low air pressure is reflected.
As optimization, the maximum thickness of the reinforcing layer is 4-6 mm and is equal to 45-55% of the thickness of the whole tire side part; thinner than normal run-flat tire, more comfortable than run-flat tire; the thickness of the two ends of the reinforcing layer is 0.8-1.2 mm;
preferably, the reduction range of the thickness of the reinforcing layer from the tire shoulder part to the tire crown part is larger than the reduction range of the thickness of the reinforcing layer from the tire shoulder part to the tire side part; the tire shoulder part can effectively buffer the deformation capacity, ensure the comfort performance of the tire, play a role in supporting the tire bead part and provide the safety performance of the tire.
Preferably, the tan delta of the rubber composition of the reinforcing layer at 60 ℃ is 0.060-0.080, so that the performance of low heat generation of the tire is reflected; the hardness at 20 ℃ is 70-78 Shore hardness, and the support property is embodied.
The reinforcement layer plays a crucial role as the most critical component in a safe and comfortable tire. The formula performance requirements of the annular rubber reinforcing layer with a special shape are high ductility, high modulus, low heat generation, excellent flexibility and high temperature resistance.
Preferably, the rubber composition constituting the apex filler has a tan delta of 0.220 to 0.350 at 60 ℃ and a hardness of 75 to 85 Shore at 20 ℃.
Preferably, the reinforcing layer is composed of an inner peripheral portion and an outer peripheral portion connected in the tire radial direction, and the rubber composition constituting the outer peripheral portion has a hardness at 20 ℃ lower than that of the rubber composition constituting the inner peripheral portion at 20 ℃. This can further improve the riding comfort during normal running.
Preferably, the reinforcing layer extends from the tire shoulder part to the tire crown part and the tire side part respectively and gradually reduces the thickness, so that when the tire runs at low air pressure, effective supporting strength can be realized at the tire shoulder part, and the durability of high-load running is met; therefore, the thickness of the tire shoulder part is gradually reduced towards the tire crown part area and the thickness of the tire shoulder part towards the tire side part area, the gradually reduced buffer strength can be generated, the sufficient buffer deformation capacity is exerted during running, and the comfort performance of the tire is ensured.
As optimization, the reinforcing layer adopts natural rubber and rare earth butadiene rubber which are matched according to a certain proportion, so that the flexing resistance (comfort of the tire) and low heat buildup performance of the reinforcing layer are ensured.
As optimization, the anti-vulcanization reversion agent PK900 is added into the formula of the reinforcing layer, compensates the polysulfide bond of sulfur crosslinking of rubber, and keeps the crosslinking density, thereby improving the thermal aging resistance of the rubber, reducing the dynamic heat generation of the rubber and improving the durability of the tire.
The formula of the reinforcing layer comprises natural rubber, rare earth butadiene rubber, carbon black, an activating agent, an accelerating agent and an anti-reversion agent.
The formula adopts natural rubber and rare earth butadiene rubber which are matched according to a certain proportion, and as the molecular chain of the rare earth butadiene rubber and the natural rubber is smooth, the flexing resistance (the comfort of the tire) of the reinforcing layer is ensured and the heat buildup property is reduced; the carbon black adopts a high-structure and fast-extrusion carbon black N550, so that the physical and mechanical properties of the rubber material can be ensured, meanwhile, the extrusion process performance is excellent, the process stability of the filling rubber can be ensured, the size stability of the rubber strip of the reinforcing layer is ensured, and the heat generation property of the rubber material is also reduced. Proper amount of zinc oxide is added into the formula of the rubber material of the reinforcing layer, so that the high temperature resistance and the heat conductivity of the vulcanized rubber can be improved. In order to ensure the aging resistance of the rubber material of the reinforcing layer, an anti-vulcanization reversion agent PK900 is added in the formula, carbon and carbon crosslinking bonds with better thermal stability are used for compensating sulfur crosslinking polysulfide bonds lost by the rubber material due to reversion, and the crosslinking density is kept, so that the physical and mechanical properties of the filling rubber are kept unchanged, the thermal aging resistance of the filling rubber is improved, the dynamic heat generation of the rubber material is reduced, and the durability of the tire is improved.
After the technical scheme is adopted, the reinforcing layer is additionally arranged on the side part of the tire, wherein the reinforcing layer is made of high-hardness rubber, the sidewall rubber is made of low-hardness rubber, the reinforcing layer extends from the shoulder part to the crown part and the sidewall part respectively and gradually reduces the thickness, and the following effects can be realized:
1. the invention can effectively play the role of buffering flexural deformation of the reinforcing layer when used under the condition of low pressure, effectively avoid the phenomenon of delamination and damage of the reinforcing layer of the tire and the air leakage prevention layer at the inner side, does not influence the rolling resistance of the tire, and improves the durability of the tire.
2. The rubber hardness of the reinforcing layer is greater than that of the sidewall rubber, the difference between the rubber hardness of the reinforcing layer and that of the sidewall portion is 7-10 degrees, good supporting rigidity of the tire can be guaranteed, the phenomenon that the tire is unseated when running at low air pressure is avoided, the safety of the tire is guaranteed, good supporting rigidity of the sidewall portion can be guaranteed, the phenomenon that the tire is abraded by an air leakage prevention layer when running at low air pressure is avoided, and therefore the durability of the tire is improved.
3. The reinforcing layer extends and reduces thickness to crown portion, side wall portion respectively by the tire shoulder, if when the tire low pressure traveles, can realize supporting intensity effectively at the tire shoulder portion, satisfies the durability that the high load traveles to the tire shoulder can produce the buffer strength of tapering toward the regional, tire shoulder portion toward the regional homoenergetic of crown portion, tire shoulder portion toward the regional ability of side wall portion, plays sufficient buffering deformability during the travel, ensures the comfortable performance of tire.
4. By mounting the vehicle with the test tires, the tires were deflated to 0.5kPa and continued to run before the test, and the preferred embodiment allowed running at 60km/h for 50km under low air pressure without tire damage. The comfort of the tire is evaluated by adopting the sense of a driver, and the durability of the tire is finally evaluated by the driving mileage of the tire, so that the comfort and the durability of the embodiment are superior to those of other tires on the market.
Drawings
FIG. 1 is a schematic cross-sectional illustration of the present invention;
fig. 2 is a cross-sectional view of the reinforcing layer.
Wherein, 1, a tire crown part, 2, a tire shoulder part, 3, a tire side part, 4, a tire bead part, 5, a fiber cord fabric layer, 6, a steel wire ring, 7, a triangle-shaped filling rubber strip, 8, an air leakage prevention layer, 9, a steel wire cord fabric layer, 10, a fiber cord cushion layer, 11, a tread rubber layer, 12, a reinforcing layer, 13, a tire side rubber layer, 14, a rim cushion rubber layer, 1201, an outer peripheral part, 1202 and an inner peripheral part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The run-flat tire shown in fig. 1 includes a crown portion 1 extending annularly in the tire circumferential direction, a pair of shoulder portions 2 and sidewall portions 3 arranged on both sides of the crown portion 1 and extending downward from the shoulder portions 2, and a pair of bead portions 4 arranged on the inner side of the sidewall portions 3 in the tire radial direction. At least 1-2 fiber plies 5 are arranged between a pair of bead portions 4. The fiber ply 5 is composed of a plurality of fiber cords in the tire radial direction. The fiber ply 5 is wound up around a bead ring 6 of a regular type disposed in each bead portion 4 from the inner side to the outer side of the tire. As the fiber cord of the fiber ply 5, an organic fiber cord is preferably used. A bead filler 7 having a triangular cross section is disposed above the bead ring 6 having both side forms. Further, an air leakage preventive layer 8 is disposed in a region between the bead portions 4.
On the other hand, a plurality of steel cord layers 9 are embedded between the crown portion 1 and the fiber cord layer 5. These steel cord layers 9 include a plurality of steel cords inclined at a certain angle with respect to the tire circumferential direction, and the steel cords are arranged to cross each other between the layers. In the steel cord layer 9, the inclination angle of the steel cord with respect to the tire circumferential direction is set to a range of, for example, 20 ° to 35 °. At least 1 fiber ply breaker 10 in which fiber cords are arranged at an angle of 5 ° or less with respect to the tire circumferential direction is disposed on the outer circumferential side of the steel ply 9. The fiber cord breaker 10 is preferably of a seamless structure in which an elongated material in which at least 1 fiber cord is aligned and coated with rubber is continuously wound in the tire circumferential direction. Further, the fiber cord breaker 10 may be disposed so as to cover the entire width-directional region of the steel cord layer 9. As the fiber cord of the fiber cord cushion layer 10, an organic fiber cord of nylon, aramid, or the like is preferably used. Further, a tread rubber layer 11 is disposed on the outer side of the steel cord layer 9 and the fiber cord cushion layer 10 in the crown portion 1. A reinforcing layer 12 having a special shape in cross section for enabling a run-flat tire to run normally is disposed between the fiber ply 5 and the air leakage preventing layer 8 in the sidewall portion 3. A sidewall rubber layer 13 is disposed outside the fiber ply 5 in the sidewall portion 3. A rim cushion rubber layer 14 is disposed outside the fiber ply 5 in the bead portion 4.
Further, the reinforcing layer 12 extends from the shoulder portion 2 to the crown portion 1 and the sidewall portion 3, respectively, and is gradually reduced in thickness. Thus, when the tire runs at low air pressure, the tire shoulder part 2 can effectively support the strength and meet the requirement of high-load running durability, so that the tire shoulder part 2 can generate gradually reduced buffer strength towards the area of the tire crown part 1 and the area of the tire shoulder part 2 towards the area of the tire side part 3, the sufficient buffer deformation capacity is exerted during running, and the comfort performance of the tire is ensured. The thickness a of the reinforcing layer 12 is the largest at the center B of the sidewall 3, and the thickness of the reinforcing layer 12 is reduced from the shoulder 2 to the crown 1 more than the thickness of the reinforcing layer 12 from the shoulder 2 to the sidewall 3, that is: at the position of the crown portion 1 or the sidewall portion 3 from the center of the shoulder portion with the same arc length, the thickness of the reinforcing layer 12 at the crown portion 1 is smaller than that at the sidewall portion 3. Thus, the use of a smaller thickness reduction width in the sidewall portion 3 ensures the sidewall support force of the present invention and the durability of the tire during running, while the use of a larger thickness reduction width in the crown portion 1 avoids the tendency of excessively increasing the strength of the crown portion 1 and decreasing the comfort of the tire during running. In order to further ensure the comfort performance of the tire, the radial distance from the tail end of the reinforcing layer 12 to the turning end point of the cord fabric layer is 5-10 mm, and when the radial distance from the tail end of the reinforcing layer 12 to the turning end point of the cord fabric layer is too small, the high load requirement of a vehicle cannot be effectively supported, so that the running durability of the tire is reduced; when the radial distance of the trailing end of the reinforcing layer 12 beyond the ply turn-up end point is too large, the strength of the sidewall portion 3 of the tire is excessively increased, resulting in a reduction in the running comfort of the tire. The hardness of the rubber material of the reinforcing layer 12 is greater than that of the rubber material of the sidewall portion 3, and the difference between the hardness of the rubber material of the reinforcing layer 12 and that of the sidewall portion 3 is 7-10, so that the bead portion 4 can be ensured to have good support rigidity, the phenomenon of knocking over of the tire during low-pressure running can be avoided, and the durability of the tire can be improved.
In the above-mentioned safety and comfort tire, the rubber composition constituting the reinforcing layer 12 may have tan δ of 0.060 to 0.080 at 60 ℃ and hardness of 70 to 78 Shore at 20 ℃. If the tan δ of the rubber composition of the reinforcing layer 12 is too small, it is not favorable for cost control and balance of physical properties, and conversely if it is too large, the durability during safe and comfortable tire running is lowered. If the rubber composition of the reinforcing layer 12 is too soft, the durability of the run-flat tire during running is lowered, and if it is too hard, the ride comfort during normal running is lowered.
In the above-described safety and comfort tires, the formulation of the reinforcing layer 12 generally employs a high sulfur, high accelerated cure system to achieve higher tensile strength and modulus, which results in a high scorch time and cure speed of the compound and processability of the compound.
The rubber composition constituting the apex filler 7 in the triangular shape may have a tan δ of 0.220 to 0.350 at 60 ℃ and a hardness of 75 to 85 Shore at 20 ℃. If tan δ of the rubber composition of the bead filler 7 having a triangular shape is too small, it is not favorable for cost control and balance of physical properties, and if too large, the durability during running of the safe and comfortable tire is lowered. If the rubber composition of the bead filler 7 having a triangular shape is too soft, the durability during running of the run-flat tire is lowered, and if it is too hard, the ride comfort during normal running is lowered.
By constituting the reinforcing layer 12 (i.e., divided into the outer peripheral portion 1201 and the inner peripheral portion 1202) with a plurality of rubber compositions having different physical properties as needed as described above, the portion (the outer peripheral portion 1201) on the side farther from the bead portion 4 is made relatively soft, and the riding comfort during normal running can be further improved.
Fig. 2 is a size diagram of the reinforcing layer 12, the shape of the reinforcing layer 12 is a polygon, and 4 patterns are provided in fig. 2, but not limited to the 4 patterns. Wherein patterns 1 and 2 are single glue structures and patterns 3 and 4 are double glue structures. The main dimensions of the reinforcing layer are:
width L: designing different widths according to different specifications;
thickness H: from the aspects of product performance and cost, the thickness of the product is optimally 4 mm-6 mm;
width L1: l1= (0.4-0.5) × L;
width L2: l2=0.25 × L;
soft gum hardness: the soft rubber part corresponds to the peripheral part 1201 in the figure 1, and the hardness is 68-75 Shore hardness;
hard rubber hardness: the hard rubber part corresponds to the inner peripheral part 1202 in the figure 1 and has the hardness of 75-80 Shore hardness;
the edge thicknesses are uniformly h =0.8-1.2 mm.
The reinforcing layer 12 is made of natural rubber and rare earth butadiene rubber which are matched according to a certain proportion, and the molecular chains of the rare earth butadiene rubber and the natural rubber are soft and smooth, so that the flexing resistance (the comfort of the tire) of the reinforcing layer is ensured, and the heat generation performance is reduced; the carbon black adopts a high-structure and fast-extrusion carbon black N550, so that the physical and mechanical properties of the rubber material can be ensured, meanwhile, the extrusion process performance is excellent, the process stability of the filling rubber can be ensured, the size stability of the rubber strip of the reinforcing layer is ensured, and the heat generation property of the rubber material is also reduced. Proper amount of zinc oxide is added into the formula of the rubber material of the reinforcing layer, so that the high temperature resistance and the heat conductivity of the vulcanized rubber can be improved. In order to ensure the aging resistance of the rubber material of the reinforcing layer, an anti-vulcanization reversion agent PK900 is added in the formula, carbon and carbon crosslinking bonds with better thermal stability are used for compensating sulfur crosslinking polysulfide bonds lost by the rubber material due to reversion, and the crosslinking density is kept, so that the physical and mechanical properties of the filling rubber are kept unchanged, the thermal aging resistance of the filling rubber is improved, the dynamic heat generation of the rubber material is reduced, and the durability of the tire is improved.
The above embodiments are only specific examples of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any suitable changes or modifications made by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. A run-flat tire characterized by: the tire comprises a crown part extending along the circumferential direction of the tire and forming a ring shape, a tire shoulder part positioned at two sides of the crown part, a tire side part below the tire shoulder part and a pair of tire bead parts arranged at the inner side of the tire radial direction of the tire side part, wherein 1-2 layers of fiber cord layers are laid between the pair of tire bead parts, two ends of each fiber cord layer respectively wind around a steel wire ring from the inner side of the tire to the outer side, a triangular rubber strip is arranged at the upper peripheral side of the steel wire ring of the pair of tire bead parts, an air leakage prevention layer is arranged in the area between the pair of tire bead parts, a plurality of layers of steel wire cord layers are arranged between the lower surface of the crown part and the fiber cord layers, and a reinforcing layer is arranged between the fiber cord layers of the tire shoulder part and the air leakage prevention layer; the reduction range of the thickness of the reinforcing layer from the tire shoulder part to the tire crown part is larger than the reduction range of the thickness of the reinforcing layer from the tire shoulder part to the tire side part.
2. A run-flat tire as claimed in claim 1, wherein: the reinforcing layer is arranged on the inner side of the air leakage prevention layer near the tire shoulder, extends towards the tire crown part and the tire side part respectively, and gradually reduces the thickness.
3. A run-flat tire as claimed in claim 2, wherein: the hardness of the rubber material of the reinforcing layer is greater than that of the sidewall rubber.
4. A run-flat tire as claimed in claim 1, wherein: the reinforcing layer is applied to the outer side of the fiber ply layer in the range of 15% to 70% of the tire section height SH.
5. A run-flat tire according to claim 4, wherein: the width of the reinforcing layer is more than or equal to 55% of the section height of the tire.
6. A run-flat tire as claimed in claim 1, wherein: the maximum thickness of the reinforcing layer is 4-6 mm and is equal to 45-55% of the thickness of the whole tire side part; the thickness of the two ends of the reinforcing layer is 0.8-1.2 mm.
7. A run-flat tire as claimed in claim 1, wherein: the rubber composition of the reinforcing layer has tan delta of 0.060-0.080 at 60 ℃ and hardness of 70-78 Shore at 20 ℃.
8. A run-flat tire as claimed in claim 1, wherein: the rubber composition constituting the apex filler has a tan delta of 0.220 to 0.350 at 60 ℃ and a hardness of 75 to 85 Shore at 20 ℃.
9. A run-flat tire as claimed in claim 1, wherein: the reinforcing layer is composed of an inner peripheral portion and an outer peripheral portion connected in the tire radial direction, and the hardness of a rubber composition constituting the outer peripheral portion at 20 ℃ is smaller than the hardness of a rubber composition constituting the inner peripheral portion at 20 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205963.XA CN114290858A (en) | 2022-03-04 | 2022-03-04 | Run-flat tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205963.XA CN114290858A (en) | 2022-03-04 | 2022-03-04 | Run-flat tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114290858A true CN114290858A (en) | 2022-04-08 |
Family
ID=80978674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210205963.XA Pending CN114290858A (en) | 2022-03-04 | 2022-03-04 | Run-flat tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114290858A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117400669A (en) * | 2023-12-14 | 2024-01-16 | 山东万达宝通轮胎有限公司 | Structure of dual-purpose limit tire component for inflation and non-inflation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4026430A1 (en) * | 1989-09-08 | 1991-03-21 | Yokohama Rubber Co Ltd | RADIAL AIR TIRES WITH EMERGENCY PROPERTIES |
| JPH1071807A (en) * | 1996-08-02 | 1998-03-17 | Michelin Rech & Technic Sa | Run flat tire and manufacture thereof |
| CN108189623A (en) * | 2018-02-11 | 2018-06-22 | 万力轮胎股份有限公司 | A kind of run-flat tire |
| CN109438787A (en) * | 2018-11-01 | 2019-03-08 | 万达集团股份有限公司 | A kind of collateral support rubber of run-flat tire, preparation method and tire construction |
| CN111422010A (en) * | 2020-03-26 | 2020-07-17 | 万达集团股份有限公司 | Anti-out-of-control tire under pressure loss condition |
-
2022
- 2022-03-04 CN CN202210205963.XA patent/CN114290858A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4026430A1 (en) * | 1989-09-08 | 1991-03-21 | Yokohama Rubber Co Ltd | RADIAL AIR TIRES WITH EMERGENCY PROPERTIES |
| JPH1071807A (en) * | 1996-08-02 | 1998-03-17 | Michelin Rech & Technic Sa | Run flat tire and manufacture thereof |
| CN108189623A (en) * | 2018-02-11 | 2018-06-22 | 万力轮胎股份有限公司 | A kind of run-flat tire |
| CN109438787A (en) * | 2018-11-01 | 2019-03-08 | 万达集团股份有限公司 | A kind of collateral support rubber of run-flat tire, preparation method and tire construction |
| CN111422010A (en) * | 2020-03-26 | 2020-07-17 | 万达集团股份有限公司 | Anti-out-of-control tire under pressure loss condition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117400669A (en) * | 2023-12-14 | 2024-01-16 | 山东万达宝通轮胎有限公司 | Structure of dual-purpose limit tire component for inflation and non-inflation |
| CN117400669B (en) * | 2023-12-14 | 2024-02-13 | 山东万达宝通轮胎有限公司 | Structure of dual-purpose limit tire component for inflation and non-inflation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1023191B1 (en) | Low cost runflat tire with improved carcass | |
| KR100548893B1 (en) | An inextensible high temperature resistant runflat tire | |
| EP0984868B1 (en) | Runflat tire with improved carcass | |
| US5620539A (en) | Pneumatic radial tire with rubber chafer, stiffener and sidewall-reinforcing rubber layer | |
| US20060231186A1 (en) | Pneumatic radial tire | |
| JP3653201B2 (en) | Pneumatic tire | |
| US20100024944A1 (en) | Pneumatic radial tire | |
| EP0605177A1 (en) | Pneumatic tire | |
| JP3673122B2 (en) | Pneumatic tire | |
| EP3109068B1 (en) | Run-flat tire | |
| US20010018943A1 (en) | Pneumatic tire | |
| CN110588248A (en) | Load-carrying tire with resistance to ditch bottom cracking | |
| JP4900016B2 (en) | Pneumatic tire | |
| JP5353275B2 (en) | Pneumatic radial tire | |
| CN111422010A (en) | Anti-out-of-control tire under pressure loss condition | |
| CN211222914U (en) | Load-carrying tire with resistance to ditch bottom cracking | |
| US8881783B2 (en) | Pneumatic tire | |
| CN114290858A (en) | Run-flat tire | |
| JP4748522B2 (en) | Pneumatic tire | |
| US20100065183A1 (en) | Turnup reinforcing structure for pneumatic tires | |
| US20100065184A1 (en) | Reinforcing structure for pneumatic tires | |
| US6631748B1 (en) | Sidewall with insert construction for runflat tire | |
| WO2000001543A1 (en) | Improved sidewall with insert construction for runflat tire | |
| JP4523823B2 (en) | Pneumatic tire | |
| US20230302856A1 (en) | Pneumatic tire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220408 |
|
| RJ01 | Rejection of invention patent application after publication |