CN113334995A - Pneumatic tire tread pattern structure for self-parking - Google Patents
Pneumatic tire tread pattern structure for self-parking Download PDFInfo
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- CN113334995A CN113334995A CN202110696520.0A CN202110696520A CN113334995A CN 113334995 A CN113334995 A CN 113334995A CN 202110696520 A CN202110696520 A CN 202110696520A CN 113334995 A CN113334995 A CN 113334995A
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- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000011161 development Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 210000000697 sensory organ Anatomy 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
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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
- B60C11/03—Tread patterns
-
- 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
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
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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
- B60C11/03—Tread patterns
- B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
- B60C11/1307—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping with special features of the groove walls
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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
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0358—Lateral grooves, i.e. having an angle of 45 to 90 degees to the equatorial plane
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a tread pattern structure of a self-parking pneumatic tire, which relates to the technical field of tires and comprises a plurality of closed annular main grooves and a plurality of inclined auxiliary grooves, wherein the closed annular main grooves are distributed at intervals along the circumferential direction of the tire by taking the equatorial line of the tire as the center, every two closed annular main grooves which are adjacent along the circumferential direction of the tire are in a central symmetrical pattern, the inclined auxiliary grooves are arranged on the left side and the right side of the equatorial line of the tire at equal intervals along the circumferential direction of the tire and are positioned between the closed annular main grooves, two adjacent inclined auxiliary grooves are positioned on the same straight line in the inclined auxiliary grooves on the left side and the right side, each closed annular main groove consists of a head edge, a tail edge and a central block, the head edge extends along the circumferential direction of the tire, the tail edge extends obliquely along the axial direction of the tire, and the head edge is connected with the tail edge. By adopting the technical scheme, the tread pattern structure of the self-parking pneumatic tire can ensure the straight-ahead performance of the tire and simultaneously improve the parking braking performance of the tire.
Description
Technical Field
The invention relates to the technical field of tires, in particular to a tread pattern structure of a self-parking pneumatic tire.
Background
In recent years, the market development of domestic recreational vehicles is rapid, and particularly, the recreational vehicles are more vigorously developed. Consumers are increasingly concerned about the ease of use of vehicles, particularly parking vehicles. Therefore, the recreational vehicle capable of realizing the self-parking function becomes a new trend of market development. The leisure vehicle often adopts a vehicle structure with front and rear wheels, and a parking accessory is additionally arranged to prevent the vehicle from falling down when the vehicle is parked. However, adding a parking accessory increases the weight of the vehicle, thereby affecting the ease with which the vehicle may be parked. Therefore, the matched tire capable of realizing self-parking becomes a new direction of vehicle development.
At present, a bicycle is usually a two-wheeled vehicle structure, the stability of straight running of a tire is high, a tire with a high longitudinal tread groove is usually adopted as a matched tire as shown in fig. 1, the groove can play excellent straight-ahead stability when the tire runs straight, but the gripping capacity of the tire is limited, the parking distance of the vehicle is also lengthened, the parking braking performance of the whole vehicle is influenced, and meanwhile, the vehicle is easy to topple over when parked, and the parking performance of the vehicle is influenced. In addition, in order to improve the parking braking performance of the whole vehicle, a tire with a larger section width is usually matched, so that the vehicle can be properly prevented from toppling, but the weight of the tire is additionally increased, and the parking capability of the vehicle is influenced, so that the requirements of linear driving stability and parking braking performance cannot be met when a common pneumatic tire is installed on a self-parking vehicle to drive.
In view of the above problems, a pneumatic tire for self-parking is proposed, which can improve the parking brake performance of the tire while ensuring the straight advance of the tire.
Disclosure of Invention
The invention aims to provide a tread pattern structure of a self-parking pneumatic tire, which can ensure the straight advancing property of the tire and improve the parking braking performance of the tire, aiming at the defects and the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the tread pattern structure of the self-parking pneumatic tire comprises a plurality of closed annular main grooves and a plurality of inclined auxiliary grooves, wherein the closed annular main grooves are distributed at intervals along the circumferential direction of the tire by taking the tire equator as the center, every two closed annular main grooves adjacent along the circumferential direction of the tire are in a central symmetrical pattern, the inclined auxiliary grooves are arranged on the left side and the right side of the tire equator at equal intervals along the circumferential direction of the tire and are positioned between the closed annular main grooves, the two adjacent inclined auxiliary grooves are positioned on the same straight line in the inclined auxiliary grooves on the left side and the right side, each closed annular main groove is composed of a head edge, a tail edge and a central block, the head edge extends along the circumferential direction of the tire, the tail edge extends obliquely along the axial direction of the tire, and the head edge is connected with the tail edge.
Further, the included angle of the head edge along the tire circumferential direction ranges from 0 to 10 °. The included angle is controlled within 0-10 degrees, when the straight driving guidance of the tire is insufficient, the whole tire is not easy to generate deflection, and the stability of straight driving is not easy to reduce.
Further, the center block is composed of a transverse part and a vertical part, the vertical part is wrapped inside by the head edge, and the transverse part is wrapped inside by the tail edge.
Further, the vertical part consists of two central auxiliary grooves and three sub-parts, and the two central auxiliary grooves divide the vertical part into the three sub-parts.
Further, the ratio of the spacing distance between the two adjacent central auxiliary grooves to the circumferential length of the tire at the vertical part is 15-40%. When the spacing distance is too small, the rigidity of the vertical part is affected, so that the stability of the tire is reduced when the tire runs in a straight line, and when the spacing distance is too large, the grip performance of the tire is insufficient when the tire is parked, and the parking braking capability of the tire cannot be effectively improved, so that the spacing distance needs to be controlled within 15% -40% of the length of the vertical part.
Further, the inclined auxiliary channel consists of a head part, a middle part and a tail part, one end of the middle part is connected with the head part, the other end of the middle part is connected with the tail part, and the head part is arranged towards the inner side of the tire.
Further, the head is composed of a first semi-closed stepped surface and reinforcing ribs, and the reinforcing ribs are distributed on the first semi-closed stepped surface at intervals.
Further, the middle part comprises a concave part and a convex part, the concave part and the convex part are arranged in a crossed mode, and the tail part is formed by a second semi-closed step surface.
Further, the ratio of the length of the head part to the length of the inclined auxiliary groove is 35% -55%, the length of the head part is greater than that of the middle part, and the length of the head part is greater than that of the tail part.
Further, the two inclined sub-grooves adjacent to each other in the tire circumferential direction have the same tire axial angle, the tire axial distance between the two inclined sub-grooves adjacent to each other in the tire circumferential direction is the same, and the difference between the tire axial angle of the inclined sub-groove and the tire axial angle of the lateral portion ranges from 0 ° to 5 °. When the angle difference between the axial included angle of the inclined auxiliary groove and the axial included angle of the transverse part is too large, the ground gripping force of the tire during parking driving is easy to fluctuate, and the parking braking capability of the tire is reduced, so that the angle difference between the axial included angle of the inclined auxiliary groove and the axial included angle of the transverse part needs to be controlled to be 0-5 degrees.
After the technical scheme is adopted, the tread pattern structure of the self-parking pneumatic tire is provided with the plurality of closed annular main grooves and the inclined auxiliary grooves, each closed annular main groove is composed of the head edge, the tail edge and the center block, the center blocks can ensure that the tire can play a good role in stability when the tire is in straight line driving, the grip performance of the tire during parking can be increased, the parking braking capacity of the tire is improved, the grip performance of the tire during parking driving can be increased by the inclined auxiliary grooves, the parking braking performance of the tire is improved, and the tire can play a good role in stability when the tire is in straight line driving.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a tread pattern of a conventional self-parking pneumatic tire.
Fig. 2 is a schematic structural view of a tread pattern of a tire in a first embodiment of the present invention.
FIG. 3 is a schematic view of the structure of a closed annular main groove 10 of a tire tread pattern according to a first embodiment of the present invention.
FIG. 4 is a schematic view of the structure of the inclined sub-groove 20 of the tread pattern of the tire according to the first embodiment of the present invention.
FIG. 5 is a schematic cross-sectional view A-A' of FIG. 4.
FIG. 6 is a schematic cross-sectional view B-B' of FIG. 4.
FIG. 7 is a schematic cross-sectional view of C-C' of FIG. 4.
FIG. 8 is a schematic cross-sectional view of D-D' in FIG. 4.
Fig. 9 is a schematic structural view of a tread pattern of a tire in a second embodiment of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
Referring to fig. 2 to 8, a tread pattern structure of a self-parking pneumatic tire according to a first embodiment of the present invention is shown, in which the tire tread is composed of a plurality of closed-loop main grooves 10 and a plurality of inclined sub-grooves 20.
The lateral direction of the tire is the axial direction of the tire, the longitudinal direction of the tire is the circumferential direction of the tire, the center line of the longitudinal direction of the tire is the equator line CL of the tire, the inner side is close to the equator line CL, the outer side is far away from the equator line CL, and the direction perpendicular to the equator line CL of the tire is the radial direction of the tire.
The closed annular main grooves 10 are distributed at intervals along the tire circumferential direction with the tire equator line CL as the center, and every two closed annular main grooves 10 adjacent along the tire circumferential direction are in a central symmetry pattern, that is: one closed annular main groove 10 of two closed annular main grooves 10 adjacent along the circumferential direction of the tire is rotated 180 degrees around the symmetric center between the two closed annular main grooves 10 adjacent along the circumferential direction and then overlapped.
The closed annular main groove 10 is composed of a head edge 11, a tail edge 12 and a central block 13, the head edge 11 is connected with the tail edge 12, the head edge 11 and the tail edge 12 wrap the central block 13, the tail edge 12 has a certain inclination, the head edge 11 extends along the circumferential direction of the tire, the tail edge 12 extends obliquely along the axial direction of the tire, the head edge 11 and the tail edge 12 form the closed annular main groove 10 under the connection of the central block 13, and the annular main groove 10 extends from the tire equator line CL to the outer side of the tire.
The range of the included angle α of the head edge 11 along the tire circumferential direction is 0-10 °, and the angle of the included angle α adopted in the present embodiment is 0 °, which is not shown in the drawings, when the circumferential included angle α of the head edge 11 is too large, the guidance performance is insufficient when the tire travels straight, the whole is easy to generate a deflection phenomenon, and the stability of the straight traveling is reduced, so that the range of the included angle α of the head edge 11 along the tire circumferential direction needs to be controlled within 0-10 °.
The central block 13 is composed of a vertical portion 131 and a horizontal portion 132, the vertical portion 131 is wrapped by the head edge 11, the horizontal portion 132 is wrapped by the tail edge 12, the vertical portion 131 is connected with the horizontal portion 132, the vertical portion 131 can ensure that the tire can play a good stability when the tire is driven in a straight line, the horizontal portion 132 can increase the grip performance of the tire when the tire is parked, and the parking braking capability of the tire is improved.
The vertical portion 131 is composed of two central sub-grooves 131a and sub-portions 131b, and the two central sub-grooves 131a divide the vertical portion 131 into three sub-portions 131 b. The ratio of the spacing distance a between the two central auxiliary grooves 131a to the length B of the vertical portion 131 in the tire circumferential direction is 15% to 40%, when the spacing distance a is too small, the rigidity of the vertical portion 131 is affected, so that the stability of the tire is reduced when the tire travels straight, when the spacing distance a is too large, the grip performance of the tire is insufficient when the tire is parked, and the parking braking capability of the tire cannot be effectively improved, so that the spacing distance a needs to be controlled within 15% to 40% of the length B of the vertical portion.
The overall shape of the central block 13 is like an L, the head edge 11 and the tail edge 12 respectively wrap the vertical part 131 and the horizontal part 132 to form the closed annular main channel 10, and the closed annular main channel 10 is like an L.
The inclined sub-grooves 20 are arranged in parallel with each other at equal intervals in the tire circumferential direction on both left and right sides of the tire equator line CL between the closed annular main grooves 10, and of the inclined sub-grooves 20 on both left and right sides, adjacent two of the inclined sub-grooves 20 are on a straight line, that is, one of the inclined sub-grooves 20 on one side of the adjacent two of the inclined sub-grooves 20 on both left and right sides is on an extension of a straight line on which the other inclined sub-groove 20 is located.
The tire axial angles β of the two inclined auxiliary grooves 20 adjacent to each other in the tire circumferential direction are the same, the angle β is greater than 0 °, and the difference between the tire axial angle β of the inclined auxiliary groove 20 and the tire axial angle γ of the transverse portion 132 is in the range of 0 to 5 °, when the angle difference between the axial included angle β of the inclined auxiliary groove 20 and the axial included angle γ of the transverse portion 132 is too large, the tire grip force during parking driving is likely to fluctuate, which may cause the parking braking force of the tire to decrease, so the angle difference between the axial included angle β of the inclined auxiliary groove 20 and the axial included angle γ of the transverse portion 132 needs to be controlled within 0 to 5 °, and the tire axial distances D between the two inclined auxiliary grooves 20 adjacent to each other in the tire circumferential direction are the same.
The inclined auxiliary groove 20 is composed of a head portion 21, a middle portion 22 and a tail portion 23, the head portion 21 is connected with one end of the middle portion 22, the other end of the middle portion 22 is connected with the tail portion 23, the head portion 21, the middle portion 22 and the tail portion 23 are sequentially arranged from the inner side of the tire axial direction to the outer side of the tire axial direction, namely the head portion 21 is arranged towards the inner side of the tire.
As shown in fig. 5 and fig. 6, which are cross-sectional views a-a 'and B-B' in fig. 4, the head 21 is composed of a first semi-closed stepped surface 21a and reinforcing ribs 21B, the reinforcing ribs 21B are distributed on the first semi-closed stepped surface 21a at intervals, the first semi-closed stepped surface 21a can increase the grip of the tire during parking driving, and improve the parking braking performance of the tire, and the reinforcing ribs 21B can ensure the rigidity of the head 21, and ensure that the tire can exert good stability during straight driving.
The middle part 22 consists of a concave part 22a and a convex part 22b, the concave part 22a and the convex part 22b are arranged in a crossed mode, the concave part 22a is inwards concave along the radial direction of the tire, the effective grounding edge of the inclined auxiliary groove 20 can be increased due to the matching of the concave part 22a and the convex part 22b, when the tire runs in a parking mode, the ground holding force of the tire can be effectively increased, and the parking braking performance of the tire is improved.
The tail portion 23 is constituted by a second semi-closed stepped surface 23 a. The second semi-closed step surface 23a can increase the grip force of the tire in parking running, and improve the parking braking performance of the tire.
In FIG. 4, the cross-sectional views A-A ', C-C ', and D-D ' are the same. The first semi-closed stepped surface 21a, the concave portion 22a and the second semi-closed stepped surface 23a can increase the grip force of the tire in parking running, and improve the parking braking performance of the tire.
The ratio of the length L1 of the head 21 of the inclined auxiliary groove 20 to the length L of the inclined auxiliary groove 20 is 35% to 55%, when the length L1 of the head 21 is too small, the grip force during the running of the tire is reduced, and the parking brake performance of the tire is reduced, and when the length L1 of the head 21 is too large, the stability of the running of the tire in a straight state is affected, so that the ratio of the length L1 of the head 21 to the length L of the inclined auxiliary groove 20 needs to be controlled within 35% to 55%.
The length L1 of the head part 21 is greater than the length L2 of the middle part, and the length L1 of the head part 21 is greater than the length L3 of the tail part 23, so that the stability of the tire in straight running is improved, and meanwhile, the tire can also exert good parking braking performance.
The working principle of the embodiment 1 of the invention is as follows: the tire tread comprises a plurality of closed annular main grooves 10 and a plurality of inclined auxiliary grooves 20, the closed annular main grooves 10 comprise head edges 11, tail edges 12 and a central block 13, the central block 13 comprises a horizontal part 132 and a vertical part 131, the vertical part 131 of the central block 13 can ensure that the tire can play a good stability when the tire is in straight line driving, the horizontal part 132 of the central block 13 can increase the grip of the tire when the tire is parked, the parking brake capacity of the tire is improved, the inclined auxiliary grooves 20 comprise head parts 21, middle parts 22 and tail parts 23, the head parts 21 of the inclined auxiliary grooves 20 can increase the grip of the tire when the tire is parked, the parking brake capacity of the tire is improved, and the tire can play a good stability when the tire is in straight line driving.
A plurality of self-parking vehicle tires with the tire specification of 18X8.50-10 are manufactured in a trial mode by adopting the tire structure mode as shown in the figures 2-8, and performance test and evaluation are carried out on the self-parking vehicle tires. And (3) mounting the matched rims of the front wheel and the rear wheel of each test tire on a self-parking vehicle and driving on a paved road surface, evaluating the stability of linear driving through the sense organ of a driver, and simultaneously measuring the braking distance of the parked tire and evaluating the parking braking performance of the tire through the combination of the sense organ of the driver.
The test result can confirm that the parking braking performance of the tire can be improved while the straight line driving stability is ensured after the tire pattern structure is adopted.
Example 2
Referring to fig. 9, a second embodiment of the tread pattern structure of the pneumatic tire for self-parking according to the present invention is shown, in which the structure of embodiment 2 is simpler than that of embodiment 1, and the tire tread is composed of a plurality of closed-loop main grooves 10 and a plurality of inclined sub-grooves 20.
The lateral direction of the tire is the axial direction of the tire, the longitudinal direction of the tire is the circumferential direction of the tire, the center line of the longitudinal direction of the tire is the equator line CL of the tire, the inner side is close to the equator line CL, the outer side is far away from the equator line CL, and the direction perpendicular to the equator line CL of the tire is the radial direction of the tire.
The closed annular main grooves 10 are distributed at intervals along the tire circumferential direction with the tire equator line CL as the center, and every two closed annular main grooves 10 adjacent along the tire circumferential direction are in a central symmetry pattern, that is: one closed annular main groove 10 of two closed annular main grooves 10 adjacent along the circumferential direction of the tire is rotated 180 degrees around the symmetric center between the two closed annular main grooves 10 adjacent along the circumferential direction and then overlapped.
The closed annular main groove 10 is composed of a head edge 11, a tail edge 12 and a central block 13, the head edge 11 is connected with the tail edge 12, the head edge 11 and the tail edge 12 wrap the central block 13, the tail edge 12 has a certain inclination, the head edge 11 extends along the circumferential direction of the tire, the tail edge 12 extends obliquely along the axial direction of the tire, the head edge 11 and the tail edge 12 form the closed annular main groove 10 under the connection of the central block 13, and the annular main groove 10 extends from the tire equator line CL to the outer side of the tire.
The range of the included angle α of the head edge 11 along the tire circumferential direction is 0-10 °, and the angle of the included angle α adopted in the present embodiment is 0 °, which is not shown in the drawings, when the circumferential included angle α of the head edge 11 is too large, the guidance performance is insufficient when the tire travels straight, the whole is easy to generate a deflection phenomenon, and the stability of the straight traveling is reduced, so that the range of the included angle α of the head edge 11 along the tire circumferential direction needs to be controlled within 0-10 °.
The central block 13 is composed of a vertical portion 131 and a horizontal portion 132, the vertical portion 131 is wrapped by the head edge 11, the horizontal portion 132 is wrapped by the tail edge 12, the vertical portion 131 is connected with the horizontal portion 132, the vertical portion 131 can ensure that the tire can play a good stability when the tire is driven in a straight line, the horizontal portion 132 can increase the grip performance of the tire when the tire is parked, and the parking braking capability of the tire is improved.
The overall shape of the central block 13 is like an L, the head edge 11 and the tail edge 12 respectively wrap the vertical part 131 and the horizontal part 132 to form the closed annular main channel 10, and the closed annular main channel 10 is like an L.
The inclined sub-grooves 20 are arranged in parallel with each other at equal intervals in the tire circumferential direction on both left and right sides of the tire equator line CL between the closed annular main grooves 10, and of the inclined sub-grooves 20 on both left and right sides, adjacent two of the inclined sub-grooves 20 are on a straight line, that is, one of the inclined sub-grooves 20 on one side of the adjacent two of the inclined sub-grooves 20 on both left and right sides is on an extension of a straight line on which the other inclined sub-groove 20 is located.
The tire axial angles β of the two inclined auxiliary grooves 20 adjacent to each other in the tire circumferential direction are the same, the angle β is greater than 0 °, and the difference between the tire axial angle β of the inclined auxiliary groove 20 and the tire axial angle γ of the transverse portion 132 is in the range of 0 to 5 °, when the angle difference between the axial included angle β of the inclined auxiliary groove 20 and the axial included angle γ of the transverse portion 132 is too large, the tire grip force during parking driving is likely to fluctuate, which may cause the parking braking force of the tire to decrease, so the angle difference between the axial included angle β of the inclined auxiliary groove 20 and the axial included angle γ of the transverse portion 132 needs to be controlled within 0 to 5 °, and the tire axial distances D between the two inclined auxiliary grooves 20 adjacent to each other in the tire circumferential direction are the same. The angled minor grooves 20 are shown as closed, angled elongated grooves.
The working principle of the embodiment 2 of the invention is as follows: the tire tread comprises a plurality of closed annular main grooves 10 and a plurality of inclined auxiliary grooves 20, the closed annular main grooves 10 comprise head edges 11, tail edges 12 and center blocks 13, the center blocks 13 comprise transverse parts 132 and vertical parts 131, the vertical parts 131 of the center blocks 13 can ensure that the tire can play a good role in stability during straight running, the transverse parts 132 of the center blocks 13 can increase the grip performance of the tire during parking, the parking braking capacity of the tire is improved, the inclined auxiliary grooves 20 can increase the grip performance of the tire during parking, the parking braking capacity of the tire is improved, and the tire can play a good role in stability during straight running.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. From pneumatic tire tread pattern structure for parking, its characterized in that: the closed annular main grooves are distributed at intervals along the circumferential direction of the tire by taking the tire equator as the center, every two closed annular main grooves adjacent along the circumferential direction of the tire are in a central symmetry pattern, the inclined auxiliary grooves are arranged on the left side and the right side of the tire equator at equal intervals along the circumferential direction of the tire and are positioned between the closed annular main grooves, the two adjacent inclined auxiliary grooves are positioned on the same straight line in the inclined auxiliary grooves on the left side and the right side, the closed annular main grooves are composed of a head edge, a tail edge and a central block, the head edge extends along the circumferential direction of the tire, the tail edge extends obliquely along the axial direction of the tire, and the head edge is connected with the tail edge.
2. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 1, wherein: the included angle of the head edge along the circumferential direction of the tire is 0-10 degrees.
3. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 1, wherein: the central block consists of a transverse part and a vertical part, the vertical part is wrapped in the head part edge, and the transverse part is wrapped in the tail part edge.
4. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 3, wherein: the vertical part consists of two central auxiliary grooves and three sub-parts, and the two central auxiliary grooves divide the vertical part into the three sub-parts.
5. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 4, wherein: the ratio of the spacing distance between the two adjacent central auxiliary grooves to the circumferential length of the tire at the vertical part is 15-40%.
6. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 1, wherein: the inclined auxiliary ditch is composed of a head part, a middle part and a tail part, one end of the middle part is connected with the head part, the other end of the middle part is connected with the tail part, and the head part is arranged towards the inner side of the tire.
7. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 6, wherein: the head comprises a first semi-closed step surface and reinforcing ribs, and the reinforcing ribs are distributed on the first semi-closed step surface at intervals.
8. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 6, wherein: the middle part comprises a concave part and a convex part, the concave part and the convex part are arranged in a crossed mode, and the tail part is formed by a second semi-closed step surface.
9. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 6, wherein: the ratio of the length of the head part to the length of the inclined auxiliary groove is 35% -55%, the length of the head part is greater than that of the middle part, and the length of the head part is greater than that of the tail part.
10. The tread pattern structure of a self-parking pneumatic tire as claimed in claim 3, wherein: the tire axial angles of the two adjacent inclined auxiliary grooves along the tire circumferential direction are the same, the tire axial distances between the two adjacent inclined auxiliary grooves along the tire circumferential direction are the same, and the difference between the tire axial angle of the inclined auxiliary groove and the angle of the transverse part along the tire axial direction ranges from 0 to 5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110696520.0A CN113334995B (en) | 2021-06-23 | 2021-06-23 | Self-parking pneumatic tire tread pattern structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110696520.0A CN113334995B (en) | 2021-06-23 | 2021-06-23 | Self-parking pneumatic tire tread pattern structure |
Publications (2)
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| CN113334995B (en) | 2024-08-20 |
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