CN114013219A - Supporting type run-flat tire - Google Patents
Supporting type run-flat tire Download PDFInfo
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- CN114013219A CN114013219A CN202111515136.2A CN202111515136A CN114013219A CN 114013219 A CN114013219 A CN 114013219A CN 202111515136 A CN202111515136 A CN 202111515136A CN 114013219 A CN114013219 A CN 114013219A
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- 229920001971 elastomer Polymers 0.000 claims abstract description 61
- 239000005060 rubber Substances 0.000 claims abstract description 61
- 239000003292 glue Substances 0.000 claims abstract description 40
- 239000004744 fabric Substances 0.000 claims abstract description 21
- 238000010030 laminating Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 230000001154 acute effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 7
- 239000011324 bead Substances 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 229940112822 chewing gum Drugs 0.000 description 1
- 235000015218 chewing gum Nutrition 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/04—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The application discloses support formula run-flat tire belongs to tire technical field, including air-tight layer and casing ply, the air-tight layer outside is located tread department with the casing ply inboard and laminates, and the air-tight layer outside is located side wall and tire shoulder department and has laid the support and glue, and the casing ply inboard is located side wall and tire shoulder department and supports and glue the laminating of surface, and the radial cross-section of support glue is crescent. The supporting rubber is arranged at the tire side and the tire shoulder between the airtight layer and the cord fabric layer, so that the tire is effectively supported, the supporting performance of the tire in a low air pressure or 0 air pressure state caused by air leakage or tire burst is effectively improved, the radial cross section of the tire is crescent, the mechanical performance of the tire is optimized, the tire shoulder and the tire side of the tire are effectively strengthened, and the integral deflection and load of the tire are increased.
Description
Technical Field
The application belongs to the technical field of tires, and particularly relates to a supporting type run-flat tire.
Background
The support type run-flat tire is a tire which can still stably run for a long time or temporarily after air leakage, when air leakage or tire burst occurs, the tire can prevent the vehicle from being out of control and turning over, and the vehicle equipped with the tire is not required to be equipped with a spare tire, so that the weight of the whole vehicle is reduced, and the manufacturing cost is reduced. However, the overall support performance of the existing support type run-flat tire is still not ideal enough, and the long-time normal running of the vehicle cannot be ensured particularly under the condition of low air pressure or 0 air pressure; and the sidewall bulges or sidewall breaks easily occur on the sidewall during the use process, thus seriously affecting the whole service life and the driving safety of the tire.
Disclosure of Invention
An object of the application is to provide a support formula run-flat tire, solves among the prior art, under the condition of low pressure or 0 atmospheric pressure, the unsatisfactory technical problem of tire support performance to increase tire safe travel time and compromise and promote riding comfort.
The utility model provides a pair of support formula run-flat tire that provides, including air-tight layer and casing ply, the air-tight layer outside is located tread department with the casing ply inboard and laminates, the air-tight layer outside is located side wall and shoulder department and has laid and support and glue, the casing ply inboard is located side wall and shoulder department and supports and glue the laminating of surface, and support and glue radial cross-section and be crescent.
Optionally, the cross-section of supporting the glue is trapezoidal quadrangle of class, supports the glue and includes that the limit is first, limit two, limit three and the limit four that the end to end connects gradually, the contained angle of limit two and limit three is 8-15, limit two is close to the tread setting, the contained angle of limit four and limit three is the acute angle, the difference of the distance of limit one both ends to limit three is 0-5mm, the distance less than or equal to the distance of limit four to limit three of limit both ends to limit three.
Optionally, a reinforcing layer is laid at the position of the side wall outside the cord fabric layer.
Optionally, triangular glue is laid on the outer side of the reinforcing layer.
Optionally, the cross section of the triangular glue comprises an outer edge, an inner edge and a bottom edge which are sequentially connected in an initial position, the inner edge comprises an upper inner edge connected with the outer edge and a bottom inner edge connected with the bottom edge, the outer edge is an outer protruding curved edge, the upper inner edge and the bottom inner edge are both inner recessed curved edges, the radius of the outer edge is 350mm, the radius of the upper inner edge is 50-100mm, the radius of the bottom inner edge is 900mm, the distance from the intersection point of the outer edge and the upper inner edge to the bottom edge is 15-30mm, the distance from the intersection point of the bottom inner edge and the upper inner edge to the bottom edge is 5-15mm, the triangular glue is provided with a waist line, the waist line is parallel to the bottom edge, the waist line passes through the intersection point of the bottom inner edge and the upper inner edge, and the length ratio of the waist line to the bottom edge is (0.65-0.8): 1.
Optionally, a plurality of steel wire rings are arranged on one side, far away from the tire surface, of the triangular rubber in a penetrating mode.
Optionally, the casing ply includes first casing ply and second casing ply, the inboard tread department that is located of first casing ply is laminated with the air-tight layer outside, the inboard tire side that is located of first casing ply and tire shoulder department and the laminating of support rubber surface, the inboard laminating with the first casing ply of second casing ply outside, the reinforcing layer is located the laminating of tire side department with the second casing ply outside, and the one side that the tread was kept away from to the second casing ply is rolled up the apex, and the terminal side of second connecting line layer is rolled up and is covered to the tire side department, the first casing ply end side is rolled up and is covered to the tire shoulder department, the one side laminating that the tread was kept away from to the air-tight layer first casing ply, the one side that the tread was kept away from to the first casing ply outside is located the tire side department and is laid and is covered to the air-tight layer, the one side that the tread was kept away from to the side gum is bonded, the outer side of the joint of the side glue and the seam allowance glue is provided with a first convex ring.
Optionally, a belt ply is laid on the outer side of the cord ply at the tire tread, a cap ply is laid on the outer side of the belt ply, a base rubber is laid on the outer side of the cap ply, a tread rubber is laid on the outer side of the base rubber, the inner side of the tread rubber is bonded with the outer side of the side rubber at the tire shoulder, a wing rubber is laid on the outer side of the tread rubber at the tire shoulder, and a second convex ring is arranged on the outer side of the wing rubber.
Optionally, the side glue outer side is the cyclic annular and evenly opens has a plurality of radiating grooves.
Optionally, the included angle between the belt line of the belt layer and the tread running line is 24-34 degrees.
One or more technical solutions in the embodiments of the present application have at least the following technical effects or advantages:
the support type run-flat tire provided by the embodiment of the invention comprises an airtight layer and a cord fabric layer, wherein the outer side of the airtight layer is attached to the inner side of the cord fabric layer at the tire surface, support rubber is paved at the positions of the outer side of the airtight layer at the tire side and the tire shoulder, the inner side of the cord fabric layer is attached to the outer surface of the support rubber at the positions of the tire side and the tire shoulder, and the cross section of the support rubber along the radial direction is crescent. The supporting rubber is arranged at the tire side and the tire shoulder between the airtight layer and the cord fabric layer, so that the tire is effectively supported, the supporting performance of the tire in a low air pressure or 0 air pressure state caused by air leakage or tire burst is effectively improved, the radial cross section of the tire is crescent, the mechanical performance of the tire is optimized, the tire shoulder and the tire side of the tire are effectively strengthened, and the integral deflection and load of the tire are increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic radial cross-sectional view of a supported run-flat tire provided in accordance with an embodiment of the present application;
FIG. 2 is an enlarged view of a schematic radial cross-section of a supported run-flat tire provided in an embodiment of the present application;
FIG. 3 is a partial schematic view of an outer surface of a side gum of a supported run-flat tire provided in accordance with an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of a support rubber of a supported run-flat tire according to an embodiment of the present disclosure in a natural state;
fig. 5 is a schematic cross-sectional view of a bead apex of a supported run-flat tire according to an embodiment of the present application in a natural state.
Reference numerals:
10-an air-tight layer; 11-a ply layer; 111-a first ply; 112-a second ply; 12-apex; 121-outer edge; 122-inner edge; 1221-upper inner edge; 1222-bottom inner edge; 123-bottom edge; 124-waist line; 13-side glue; 131-a first convex ring; 132-heat sink; 14-a traveler; 15-a belt layer; 16-a cap ply layer; 17-base glue; 18-tread band; 181-second convex ring; 19-son chewing gum; 20-support glue; 21-edge one; 22-edge two; 23-side three; 24-edge four; 30-a strengthening layer; 40-a first force-bearing zone; 41-second force-bearing zone.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
Examples
Referring to fig. 1 to 5, the present embodiment provides a support type run-flat tire, including an inner liner 10 and a ply 11, an outer side of the inner liner 10 is attached to an inner side of the ply 11 at a tread, support rubbers 20 are laid on outer sides of the inner liner 10 at sidewalls and shoulders, inner sides of the ply 11 at sidewalls and shoulders are attached to outer surfaces of the support rubbers 20, and a radial cross section of the support rubbers 20 is crescent.
The supporting rubber is arranged at the tire side and the tire shoulder between the airtight layer and the cord fabric, so that the tire is effectively supported, the supporting performance of the tire in a low air pressure or 0 air pressure state caused by air leakage or tire burst is improved, the tire is prevented from excessively deforming, an automobile can normally run, the radial cross section of the tire is crescent, the mechanical performance of the tire is optimized, the tire shoulder and the tire side of the tire are effectively strengthened, and the integral deflection and load of the tire are increased.
The support-type run-flat tire has two main force-receiving zones, namely a first force-receiving zone 40 and a second force-receiving zone 41.
Preferably, in order to further explain the specific shape of the support rubber 20, the cross section of the support rubber 20 is a trapezoid-like quadrangle, the support rubber 20 includes a first side 21, a second side 22, a third side 23 and a fourth side 24 which are sequentially connected end to end, an included angle between the second side 22 and the third side 23 is 8-15 °, the second side 22 is disposed close to the tread, an included angle between the fourth side 24 and the third side 23 is an acute angle, a difference between distances from two ends of the first side 21 to the third side 23 is 0-5mm, and a distance from an end of the second side 22 to the third side 23 is less than or equal to a distance from the fourth side 24 to the third side 23.
By controlling the included angle between the second edge 22 and the third edge 23 to be 8-15 degrees, the cord fabric 11 can be ensured to be basically kept horizontal before being attached, the transition of the attaching part is uniform, the stress concentration is effectively avoided, and the durability under the state of 0 air pressure is improved. By controlling the distance difference between the two ends of the first edge 21 and the third edge 23 to be 0-5mm, the transition from the second edge 22 to the fourth edge 24 is uniform, the stress concentration is avoided, and the durability under the state of 0 air pressure is improved. By controlling the shape and size of the supporting rubber, the buffer area of the tire is moved upwards to be close to the tread of the tire, so that the stress of the first stress area 40 at the junction of the tire side and the tire shoulder is dispersed towards two sides, the stress concentration is reduced, the tire side has enough strength when the tire runs, and the comfort of the tire during running is improved.
In order to further improve the support performance of the tire, a reinforcing layer 30 is laid outside the carcass layer 11 at the sidewall. Through setting up strengthening layer 30, carry out the auxiliary stay to the support glue, strengthen the support performance in second atress district 41 simultaneously, cushion the stress concentration phenomenon in second atress district 41.
It should be noted that the reinforcing layer 30 is made of fiber cord fabric or steel cord fabric, the cord fabric cutting angle is 15-55 °, the strength of the part near the rim assembly line can be increased by controlling the angle range, the heat generation during the operation under 0 air pressure state can be slowed down, the tire can run for a longer distance, and the use safety is increased.
In order to further strengthen the structural strength of the side of the tire far away from the tire tread, an apex 12 is laid outside the reinforcing layer 30. Through setting up apex 12, effectively support the whole shape of tire, support strengthening layer 30 from the outside simultaneously, promote the amount of deflection of side of the wall.
Preferably, to further explain the specific shape of the apex 12, the cross-section of the apex 12 includes an outer edge 121, an inner edge 122 and a bottom edge 123 connected in sequence, the inner edge 122 includes an upper inner edge 1221 connected to the outer edge 121 and a bottom inner edge 1222 connected to the bottom edge 123, the outer edge 121 is an outer protruding curved edge, the upper inner edge 1221 and the bottom inner edge 1222 are inner recessed curved edges, the outer edge 121 has a radius of 200 and 350mm, the upper inner edge 1221 has a radius of 50-100mm, the bottom inner edge 1222 has a radius of 500 and 900mm, the intersection of the outer edge 121 and the upper inner edge 1221 is 15-30mm from the bottom edge 123, the intersection of the bottom inner edge 1222 and the upper inner edge 1221 is 5-15mm from the bottom edge 123, the apex 12 is provided with a waist line 124, the waist line 124 is parallel to the bottom edge 123, the waist line 124 passes through the intersection of the bottom inner edge 1222 and the upper inner edge 1221, the ratio of the length of the waist line 124 to the length of the base 123 is 0.65-0.8: 1.
The distance from the intersection point of the outer edge 121 and the upper inner edge 1221 to the bottom edge 123 is controlled to be 15-30mm, so that the height of the apex is effectively reduced, stress points of the tire during 0-pressure running move downwards, the comfort is improved, and the sidewall deflection space is increased. The distance from the intersection point of the bottom inner edge 1222 and the upper inner edge 1221 to the bottom edge 123 is controlled to be 5-15mm, and the length ratio of the waist line 124 to the bottom edge 123 is controlled to be 0.65-0.8:1, so that the thickness of the lower part of the apex 12 is effectively increased, and the strength of the tire bead part is increased. The radius of the outer edge 121 is 200-350mm, the radius of the upper inner edge 1221 is 50-100mm, and the radius of the bottom inner edge 1222 is 500-900mm, so that the strength of the lower part of the triangular glue 12 can be ensured, the curve of the upper part of the triangular glue 12 is matched with the forming drum, the flowing of glue is reduced, the stress is dispersed, and the durability of 0 air pressure is improved. By controlling the size, the apex 12 has higher strength and better heat dissipation performance, the deflection amount is reduced, and the deflection heat is reduced.
In order to further stabilize the overall shape of the tire, a plurality of steel wire rings 14 are arranged on one side of the apex away from the tire tread in a penetrating mode. By arranging the bead rings 14, the overall shape of the tire is stabilized, and the positions of the apexes 12 are fixed, so that the positions of the reinforcing layers 30 are fixed, and the structural performance of the second stress zone 41 is further improved.
Preferably, the steel wire ring adopts a multi-layer hexagonal design, and 4-8 steel wires are added compared with a common tire. By controlling the number of layers and the number of the steel wire rings, the support of the tire bead on the whole tire body is increased, the adaptability of the tire and the rim is improved, and the separation of the tire and the rim under the running states of low air pressure and 0 air pressure is prevented.
In order to further improve the flexibility of the tire, the ply 11 comprises a first ply 111 and a second ply 112, the inner side of the first ply 111 is positioned at the tread and attached to the outer side of the airtight layer 10, the inner side of the first ply 111 is positioned at the tire side and the tire shoulder and attached to the outer surface of the support rubber 20, the inner side of the second ply 112 is attached to the outer side of the first ply 111, the reinforcing layer 30 is attached to the outer side of the second ply 112 at the tire side, one side of the second ply 112 away from the tread is covered with the apex 12, the end side of the second tie layer 112 is covered to the tire side, the end side of the first ply 111 is covered to the tire shoulder, one side of the airtight layer 10 away from the tread is attached to the first ply 111, the outer side of the first ply 111 is positioned at the tire side and covered with the sub-cap rubber 19, one side of the sub-cap rubber 19 away from the tire tread is covered with the airtight layer 10, and one side rubber 13 is arranged at the outer side of the tire shoulder, the side rubber 13 is far away from the side seam allowance rubber 19 of the tread to be bonded, and a first convex ring 131 is arranged on the outer side of the bonding position of the side rubber 13 and the seam allowance rubber 19. Through setting up 11 book of cord fabric and covering apex 12, carry out two-sided book to apex 12 and cover fixedly, glue 19 bonding through setting up the side glue 13 and the kou to make the tire side wall form including supporting glue 20 and strengthening layer 30 multilayer book of in cover inlayer and outer multilayer structure, make this structure become an organic whole back through vulcanizing, can effectively promote the support performance and the amount of deflection of tire side wall. Through setting up first bulge loop 131, can protect the rim on the one hand, on the other hand can effectively promote the amount of deflection of second stress zone 41, and auxiliary stay glues 20 and reinforcing layer 30 and carries out the support of side wall.
Preferably, the first collar 131 is located at a centerline of the stiffening layer 30. By controlling the setting position, the relative position of the first bulge loop 131 and the reinforcing layer 30 is further optimized, and the mechanical property of the second force bearing zone 41 is further improved.
In order to explain the specific structure of the tread, a belt layer 15 is laid on the outer side of the cord fabric layer 11 at the tread, a cap ply layer 16 is laid on the outer side of the belt layer 15, a base rubber 17 is laid on the outer side of the cap ply layer 16, a tread rubber 18 is laid on the outer side of the base rubber 17, the inner side of the tread rubber 18 is located at the tire shoulder and is bonded with the outer side of the side rubber 13, a wing rubber is laid on the outer side of the tread rubber 18 at the tire shoulder, and a second convex ring 181 is arranged on the outer side of the wing rubber. The tread with a multi-layer structure is formed by arranging the belt layer 15, the cap ply layer 16, the base rubber 17 and the tread rubber 18, the tread rubber 18 is bonded with the side rubber 13, the belt layer 15, the cap ply layer 16 and the base rubber 17 are coated in the tread, the rigidity of the tread is effectively improved, and the durability and the safety of operation under the 0-air-pressure state are improved. When the tire is in short of air, the tire surface is pressed inwards, so that the support rubber 20 positioned in the first stress area 40 is extruded to be bent, and at the moment, the second convex ring 181 can effectively reinforce the rigidity and the flexibility of the part of the support rubber 20 positioned in the first stress area 40, so that the support performance of the tire is improved.
In order to prolong the service life of the tire, a plurality of heat dissipation grooves 132 are uniformly formed on the outer side of the side rubber 13 in an annular shape. By arranging the heat dissipation grooves 132, the heat dissipation area and the heat dissipation speed in the running process are increased, the heat accumulation is reduced, the use of materials can be reduced, the heat accumulation is low, the weight of the tire can be reduced, and the service life of the tire is prolonged.
Preferably, the heat dissipation grooves 132 have a depth of 1-3 mm.
In order to optimize the stress condition of the tire, the included angle between the belt line of the belt layer 15 and the tread running line is 24-34 degrees. Through controlling above-mentioned angle, it is further rational distribution of the stress point of tire, and stress distribution is more even, and the hardness of tread can be optimized to above-mentioned angular range, changes tread impression shape, plays the cushioning effect in going to promote the travelling comfort.
In summary, the following steps: the utility model provides a pair of support formula run-flat tire, it sets up the support glue through lieing in side wall and tire shoulder department between air-tight layer and casing ply, and make the three vulcanize the laminating, effectively support the tire, promote the low atmospheric pressure that its gas leakage or flat child lead to or the support performance when 0 atmospheric pressure state, prevent that the tire from excessively warping, make the car can normally travel, further be crescent through setting up its radial cross section, optimize its mechanical properties, effectively strengthen the tire shoulder and the side wall of tire, increase the whole amount of deflection and the load of tire. By controlling the shape and size of the supporting rubber, the buffer area of the tire is moved upwards to be close to the tire surface, the first stress area 40 is located at the junction of the tire surface and the tire shoulder, the tire side has enough strength when the tire runs, and the comfort when the tire runs is improved. Through setting up strengthening layer 30, carry out the auxiliary stay to the support glue, strengthen the support performance in second atress district 41 simultaneously, cushion the stress concentration phenomenon in second atress district 41. Through setting up apex 12, effectively support the whole shape of tire, support strengthening layer 30 from the outside simultaneously, promote the amount of deflection of side of the wall. By arranging the bead rings 14, the overall shape of the tire is stabilized, and the positions of the apexes 12 are fixed, so that the positions of the reinforcing layers 30 are fixed, and the structural performance of the second stress zone 41 is further improved. By controlling the number of layers and the number of the steel wire rings, the support of the tire bead on the whole tire body is increased, the adaptability of the tire and the rim is improved, and the separation of the tire and the rim under the running states of low air pressure and 0 air pressure is prevented. Through setting up 11 book of cord fabric and covering apex 12, carry out two-sided book to apex 12 and cover fixedly, through setting up side glue 13 and the 19 bonding of sub-mouthful of glue, make the tire side wall form including supporting glue 20 and strengthening layer 30 multilayer book of in cover the inlayer and add outer multilayer structure, through vulcanizing making this structure become integrative after, can effectively promote the support performance and the amount of deflection of tire side wall.
Technical solutions between various embodiments may be combined with each other, but must be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a support formula run-flat tire, includes air-tight layer (10) and ply (11), the inboard tread department laminating that is located of air-tight layer (10) outside and ply (11), its characterized in that, the inboard tire side and the tire shoulder department of being located of air-tight layer (10) have laid and have supported glue (20), ply (11) inboard is located tire side and tire shoulder department and supports glue (20) surface laminating, and support glue (20) are crescent along radial cross-section.
2. The supporting type run-flat tire according to claim 1, wherein the cross section of the supporting rubber (20) is a trapezoid-like quadrangle, the supporting rubber (20) comprises a first side (21), a second side (22), a third side (23) and a fourth side (24) which are sequentially connected end to end, the included angle between the second side (22) and the third side (23) is 8-15 degrees, the second side (22) is arranged close to the tire tread, the included angle between the fourth side (24) and the third side (23) is an acute angle, the difference between the distances from the two ends of the first side (21) to the third side (23) is 0-5mm, and the distance from the end of the second side (22) to the third side (23) is less than or equal to the distance from the fourth side (24) to the third side (23).
3. A supported run-flat tire according to claim 1, wherein a reinforcing layer (30) is applied to the outside of the ply (11) at the sidewall.
4. A supported run-flat tire according to claim 3, wherein the reinforcing ply (30) is provided with apex (12) on the outside.
5. The supporting run-flat tire as claimed in claim 4, wherein the cross section of the apex (12) comprises an outer edge (121), an inner edge (122) and a bottom edge (123) which are sequentially connected in the first place, the inner edge (122) comprises an upper inner edge (1221) connected with the outer edge (121) and a bottom inner edge (1222) connected with the bottom edge (123), the outer edge (121) is an outer convex edge, the upper inner edge (1221) and the bottom inner edge (1222) are both inner concave curved edges, the radius of the outer edge (121) is 200-350mm, the radius of the upper inner edge (1221) is 50-100mm, and the radius of the bottom inner edge (1222) is 500-900mm,
the distance from the intersection point of the outer edge (121) and the upper inner edge (1221) to the bottom edge (123) is 15-30mm, the distance from the intersection point of the bottom inner edge (1222) and the upper inner edge (1221) to the bottom edge (123) is 5-15mm, the triangular glue (12) is provided with a waist line (124), the waist line (124) is parallel to the bottom edge (123), the waist line (124) passes through the intersection point of the bottom inner edge (1222) and the upper inner edge (1221), and the length ratio of the waist line (124) to the bottom edge (123) is (0.65-0.8): 1.
6. A supported run-flat tire according to claim 4, wherein a plurality of wire loops (14) are threaded through the apex on the side away from the tread.
7. A supporting run-flat tire according to claim 4, characterized in that said ply (11) comprises a first ply (111) and a second ply (112), said first ply (111) being applied to the outer side of the airtight layer (10) on the inner side at the tread and on the inner side at the sidewalls and shoulders of the first ply (111) and on the outer surface of the support rubber (20),
the inner side of the second cord fabric layer (112) is attached to the outer side of the first cord fabric layer (111), the reinforcing layer (30) and the outer side of the second cord fabric layer (112) are attached to the side wall, one side of the second cord fabric layer (112) far away from the tread covers the apex (12), the end side of the second cord fabric layer (112) is covered to the side wall, the end side of the first cord fabric layer (111) is covered to the tire shoulder,
one side laminating of tread is kept away from in airtight layer (10) first ply (111), and first ply (111) outside is located the tire side department and has laid sub-mouthful of glue (19), and one side of keeping away from the tread of sub-mouthful glue (19) is rolled up airtight layer (10), side glue (13) have been laid in the tire shoulder department in first ply (111) outside, and side glue (13) are kept away from one side of tread and are glued (19), and the outside of side glue (13) and sub-mouthful of glue (19) bonding department is equipped with first bulge loop (131).
8. The supporting type run-flat tire according to claim 7, wherein a belt layer (15) is laid on the outer side of the cord fabric layer (11) at the tire tread, a cap ply layer (16) is laid on the outer side of the belt layer (15), a base rubber (17) is laid on the outer side of the cap ply layer (16), a tread rubber (18) is laid on the outer side of the base rubber (17), the inner side of the tread rubber (18) is located at the tire shoulder and is bonded with the outer side of the side rubber (13), a wing rubber is laid on the outer side of the tread rubber (18) at the tire shoulder, and a second convex ring (181) is arranged on the outer side of the wing rubber.
9. A supported run-flat tire according to claim 5, wherein the lateral rubber (13) is provided with a plurality of heat dissipation grooves (132) uniformly formed in a ring shape on the outer side.
10. A supported run-flat tire according to claim 7, wherein the belt line of the belt layer (15) is at an angle of 24-34 ° to the tread running line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515136.2A CN114013219A (en) | 2021-12-13 | 2021-12-13 | Supporting type run-flat tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515136.2A CN114013219A (en) | 2021-12-13 | 2021-12-13 | Supporting type run-flat tire |
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| Publication Number | Publication Date |
|---|---|
| CN114013219A true CN114013219A (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111515136.2A Pending CN114013219A (en) | 2021-12-13 | 2021-12-13 | Supporting type run-flat tire |
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| Country | Link |
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| CN (1) | CN114013219A (en) |
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