阅读说明：本技术 一种基于仿生鲨鱼皮鳞片结构的轮胎防滑花纹沟槽 (Tire antiskid decorative pattern slot based on bionic sharkskin scale structure ) 是由 刘从臻 孙运芬 李永强 徐成伟 谢孟雨 于 2020-06-17 设计创作，主要内容包括：本发明公开了一种基于仿生鲨鱼皮鳞片结构的轮胎防滑花纹沟槽,包括轮胎胎面、沟槽和仿生凸起结构；所述沟槽布置于轮胎胎面,其纵向沟槽底部设有仿生凸起结构；所述仿生凸起结构是基于鲨鱼皮鳞片结构设计而成,其排布方式按照菱形三两交错排列,其中后一排的凸起位于前一排两凸起之间的中心线上。本发明仿生凸起结构的设置可在不影响轮胎其他性能的前提下,有效降低沟槽内水流阻力,提高沟槽排水能力,降低轮胎发生滑水的可能性；同时能够减少空气泵浦噪声,降低中高频频带内的气柱共鸣噪声；且凸起结构的存在能将沟槽中的石子挤压弹出,起到延长轮胎寿命的作用。(The invention discloses a tire anti-skid pattern groove based on a bionic sharkskin scale structure, which comprises a tire tread, a groove and a bionic bulge structure; the grooves are arranged on the tire tread, and the bottoms of the longitudinal grooves of the grooves are provided with bionic bulge structures; the bionic protrusion structure is designed based on a sharkskin scale structure, the arrangement mode of the bionic protrusion structure is arranged according to three or two diamond staggered arrangements, and the protrusion of the back row is positioned on the central line between the two protrusions of the front row. The bionic protruding structure can effectively reduce the water flow resistance in the groove, improve the drainage capability of the groove and reduce the possibility of water slipping of the tire on the premise of not influencing other performances of the tire; meanwhile, the air pumping noise can be reduced, and the air column resonance noise in a medium-high frequency band is reduced; and the existence of the bulge structure can extrude and pop the stones in the groove, so that the service life of the tire is prolonged.)

1. The utility model provides a tire antiskid decorative pattern slot based on bionical sharkskin scale structure which characterized in that: comprises a tire tread (1), a groove (2) and a bionic convex structure (3); the groove (2) is arranged on the tire tread (1), and the bottom of the longitudinal groove (2) is provided with a bionic bulge structure (3); the bionic bulge structure (3) is designed based on a sharkskin scale structure, the arrangement mode of the bionic bulge structure is arranged according to three or two diamond staggered arrangements, and the bulge of the back row is positioned on the central line between the two bulges of the front row.

2. The tire antiskid riffled groove based on bionic sharkskin scale structure of claim 1, wherein: the transverse arrangement gaps L of the bionic bulge structures (3) are equal and are 1.2-1.5 mm.

3. The tire antiskid riffled groove based on bionic sharkskin scale structure of claim 1, wherein: the bionic bulge structures (3) are equal in longitudinal arrangement gaps H, not larger than transverse gaps L and 1.0-1.5mm in length.

4. The tire antiskid riffled groove based on bionic sharkskin scale structure of claim 1, wherein: a gap D exists between the bionic protruding structure (3) and the side wall of the groove (2), and D is not less than 0.8 mm.

5. The tire antiskid riffled groove based on bionic sharkskin scale structure of claim 1, wherein: the bionic bulge structure (3) is formed by connecting two auxiliary bulge ribs (31) and a main bulge rib (32), and a groove (33) is formed between the main bulge rib and the auxiliary bulge rib.

6. The tire antiskid riffled groove based on bionical sharkskin scale structure of claim 5, characterized in that: the groove (33) is arc-shaped, occupies 1/3-1/2 of the circumference, and has a radius r of 0.1-0.15 mm.

7. The tire antiskid riffled groove based on bionical sharkskin scale structure of claim 5, characterized in that: the height of the bionic bulge structure (3) is lower than 1/3 of the depth of the groove (2), the shape of the bionic bulge structure is arc-shaped along the longitudinal direction of the groove (2), and the total length l of the bionic bulge structure (3)₁1/3 at the highest point of this structure.

8. The tire antiskid riffled groove based on bionical sharkskin scale structure of claim 5, characterized in that: two auxiliary protruding ribs (31) of the bionic protruding structure (3) are symmetrical about the main protruding rib (32), the auxiliary protruding ribs (31) are lower than the main protruding rib (32), and the height of the auxiliary protruding ribs is 2/3 of the main protruding rib (32).

9. The tire antiskid riffled groove based on bionical sharkskin scale structure of claim 7, characterized in that: the total length l of the bionic bulge structure (3)₁3.5-5mm, the secondary raised ribs (31) being slightly shorter than the primary raised ribs (32), length l₂Is 2-3.5 mm.

10. The tire antiskid riffled groove based on bionical sharkskin scale structure of claim 7, characterized in that: the width d of the bionic bulge structure (3) is 1.2-1.5 mm.

Technical Field

The invention belongs to the technical field of automobile tires, and particularly relates to a tire anti-skid pattern groove based on a bionic sharkskin scale structure.

Background

With the enhancement of national economic strength and the rapid development of heavy industry, vehicles become necessities of daily life and work of people. When the automobile runs in severe weather or on a water accumulation road surface, the roughness of the road is reduced, the adhesion performance of the automobile is reduced, the accident rate of the automobile is increased, and the safety of personnel and property is greatly threatened. In order to improve the hydroplaning performance of the tire, guarantee life safety and reduce property loss, it is important to deepen the research on the hydroplaning resistance of the tire.

The phenomenon of tire hydroplaning is mainly caused by that the tire is separated from the road surface due to the overlarge pressure of the running water on the tread, so that the steering control capability of the tire is lost. According to the momentum theorem, if the flow velocity of water in the ground contact area of the tire can be increased, the generation of the hydrodynamic pressure can be reduced. Drainage of the tire relies primarily on the tread grooves, and increased groove cross-sectional area is often used to increase the hydroplaning speed of the tire. However, as the cross-sectional area of the groove increases, the performance of the tire in other aspects such as noise and rolling resistance also increases.

The living things are influenced by natural selection for a long time, and a lot of special structures adapted to the living environment of the living things are evolved, and the resistance of the body surface of the living things in the action process is very small. For example, when the shark swims in water at high speed, the surface of the shark is composed of micro-groove scales along the flow direction, so that the swimming resistance is greatly reduced. Foreign scholars apply the shark skin structure to spacecraft to reduce the resistance by 5.6%. The groove structure plays a role in limiting the turbulence of a fluid medium at the valley, and simultaneously reduces the tangential stress of the skin at the valley. Therefore, the shark scale is bionic, the bionic microstructure is applied to the bottom of the groove of the tire, and the anti-skid property of the tire can be improved on the premise of not changing the cross section area of the groove.

Disclosure of Invention

The invention aims to improve the drainage performance of the tire and reduce air pumping noise on the basis of not changing the cross section area of a groove. Therefore, the tire antiskid pattern groove based on the bionic sharkskin scale structure is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a tire antiskid pattern groove based on a bionic sharkskin scale structure comprises a tire tread, a groove and a bionic bulge structure; the grooves are arranged on the tire tread, and the bottoms of the longitudinal grooves of the grooves are provided with bionic bulge structures; the bionic protrusion structure is designed based on a sharkskin scale structure, the arrangement mode of the bionic protrusion structure is arranged according to three or two diamond staggered arrangements, and the protrusion of the back row is positioned on the central line between the two protrusions of the front row.

Furthermore, the transverse arrangement gaps L of the bionic bulge structures are equal and are 1.2-1.5 mm.

Furthermore, the longitudinal arrangement gaps H of the bionic bulge structures are equal and not larger than the transverse arrangement gaps L and are 1.0-1.5 mm.

Furthermore, a gap D exists between the bionic bulge structure and the side wall of the groove, and D is not less than 0.8 mm.

Furthermore, the bionic bulge structure is formed by connecting two auxiliary bulge ribs and a main bulge rib, and a groove is formed between the main bulge rib and the auxiliary bulge rib.

Furthermore, the groove is in the shape of a circular arc, occupies 1/3-1/2 of the circumference, and has a radius r of 0.1-0.15 mm.

Furthermore, the height of the bionic bulge structure is lower than 1/3 of the depth of the groove, the shape of the bionic bulge structure is arc-shaped along the longitudinal direction of the groove, and the total length l of the bionic bulge structure₁1/3 at the highest point of this structure.

Furthermore, two auxiliary protruding ribs of the bionic protruding structure are symmetrical relative to the main protruding rib, and the auxiliary protruding ribs are lower than the main protruding rib and have the height of 2/3 of the main protruding rib.

Further, the total length l of the bionic bulge structure₁3.5-5mm, the secondary raised ribs are slightly shorter than the primary raised ribs, and the length l₂Is 2-3.5 mm.

Furthermore, the width d of the bionic bulge structure is 1.2-1.5 mm.

Compared with the prior art, the invention has the beneficial effects that:

the bionic bulge structure arranged in the invention can change the flow field structure of a turbulent flow boundary layer, increase the thickness of a viscous bottom layer, play a role in reducing viscosity and resistance of fluid, improve the water flow speed in a pattern groove of a grounding area, enhance the drainage capacity of the groove and be more beneficial to the drainage of water flow. Therefore, the water blocking of the front end of the tire in the ground connection is not easy to generate, the pressure of the running water of the tire surface is reduced, the water slipping phenomenon of the tire is delayed, and the water resistance of the tire is improved. Meanwhile, the air pumping noise can be reduced, the air column resonance noise in the medium-high frequency band is reduced, and the stone in the groove can be extruded and popped out due to the existence of the protruding structure, so that the service life of the tire is prolonged.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of an antiskid pattern groove of a tire of a bionic sharkskin scale structure of the invention;

FIG. 2 is a top view of a trench of a biomimetic protrusion structure according to the present invention;

FIG. 3 is a trench front view of a biomimetic protrusion structure according to the present invention;

FIG. 4 is a left side view of the bionic projection according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of an elevational view of a bionic projection according to an embodiment of the present invention;

in the above figures: 1. a tire tread; 2. a trench; 3. a bionic bulge structure; 31. a secondary raised rib; 32. a main protrusion rib; 33. and (4) a groove.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope 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.

As shown in figure 1, a tire antiskid decorative pattern slot based on bionical sharkskin scale structure, including tire tread 1 and groove 2 of setting on the tread, the bottom of groove 2 sets up bionical protruding structure 3 of bionical sharkskin scale, when the vehicle was gone on ponding road surface, the flow field structure of torrent boundary layer can be changed in bionical protruding structure 3's setting, increase viscidity bottom thickness, improve the inside velocity of water flow of ground connection district tread groove, reinforcing groove 2 drainage ability, more be favorable to the discharge of rivers.

As shown in fig. 2, the bionic projection structures 3 are arranged in a three-two staggered manner in a diamond arrangement manner, wherein the bionic projections 3 in the next row are located on the central line between the two bionic projections 3 in the previous row. The transverse arrangement gaps L of all the bionic bulge structures 3 are equal, and L is 1.2-1.5 mm; the longitudinal arrangement gaps H are all equal and are not larger than the transverse arrangement gaps L, and H is 1.0-1.5 mm. The bionic bulge structures 3 are arranged in a staggered mode and arranged at intervals, so that the fluid boundary layer burst structure can be better influenced, the fluid in the grooves 2 is changed into a stable state, and the discharge of water flow is accelerated.

As shown in fig. 2, the number of the biomimetic protrusion structures 3 in the diamond-shaped arrangement can be changed with the width of the groove 2. The narrow grooves 2 may be staggered by two or more, and the wide grooves 2 may be staggered by four or more.

As shown in fig. 3 and 4, a gap D is left between the bionic protruding structure 3 and the side wall of the groove 2, and D is not less than 0.8 mm. The bionic bulge structure 3 is formed by connecting two auxiliary bulge ribs 31 and a main bulge rib 32, a groove is formed between the main bulge rib and the auxiliary bulge rib, wherein the two auxiliary bulge ribs 31 are symmetrical relative to the main bulge rib 32, and the length and the height of each auxiliary bulge rib 31 are lower than those of the main bulge rib 32. Because of the existence of the arc-shaped raised ribs, the translation of transverse vortex is reduced, the interaction of the vortex is reduced, the energy efficiency is greatly improved, the water flow resistance is reduced, and the noise of air pumping is reduced; the existence of the raised ribs raises the position of the secondary vortex, so that the grooves 33 in the raised ribs are filled with low-speed and quiet fluid, the thickness of the viscous bottom layer is increased, the plane shear stress is reduced, and the water flow speed in the groove 2 is improved.

As shown in fig. 4 and 5, the width d of the bionic bulge structure 3 is 1.2-1.5mm, and the total length l₁That is, the length of the main protrusion rib 32 is 3.5-5mm, and the length l of the auxiliary protrusion rib 31₂Is 2-3.5 mm. The height of the main projection rib 32 is lower than 1/3 of the depth of the groove 2, the shape is arc along the longitudinal direction of the groove 2, and the total length l of the bionic projection structure 3₁1/3 at the highest point of this structure, the secondary projection rib 31 has a height 2/3 of the primary projection rib 32. The height of the bionic bulge structure 3 is too large, so that the water flow resistance is increased, and the water slipping phenomenon is more quickly caused; the height dimension is too small, so that the water flow cannot be affected, and the processing difficulty is high.

Under the same test conditions, the original pattern tire with the flat bottom of the groove 2 and the tire with the bionic convex structure 3 are compared with the running water pressure value of the tire surface under different water flow speeds, and the results are shown in the following table:

it can be seen from the table that after the bionic bulge structure is arranged on the tire groove, the hydrodynamic pressure on the tire tread is reduced, and the tread hydrodynamic pressure of the tire with the bionic bulge structure is reduced more and more obviously along with the increase of the speed. The structure of the invention can accelerate the speed of water flow in the grounding groove, delay the water slipping phenomenon of the tire and improve the water slipping resistance of the tire. Meanwhile, the air pumping noise and the air column resonance noise in low, medium and high frequency bands can be reduced. In addition, the bionic bulge structure can extrude and pop out stones in the groove, and the effect of prolonging the service life of the tire is achieved.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like which do not depart from the spirit and principle of the present invention as set forth in the claims should be construed as being included in the protection scope of the present invention.