TW201406570A - Stone-clipping prevention structure of tire grooves - Google Patents

Abstract

The present invention mainly provides a stone-clipping prevention structure of tire grooves, a preset number of which is disposed on one tread, the prevention structure comprises: a tread relief groove, the edge walls on its both sides are respectively set to be a first sidewall and a second sidewall having a preset slope, and the edge wall slope of the first sidewall is different from that of the second sidewall; a set of projecting steps provided in the tread relief groove of tire, and comprising a first projecting step and a second projecting step disposed on the first sidewall and the second sidewall respectively with a preset height, the first and second projecting steps have a protruding curved surface with a predetermined curvature that runs continuously along the first and second sidewalls, respectively. Accordingly, with the use of the first and second sidewalls respectively having a different slope on both sides in collaboration with the first and second projecting steps provided thereon with a different convex curvature, stones that enter into the grooves are not easily caught as gravels, thereby achieving the effect of stone-clipping prevention while minimizing the generation of fluid turbulence in order to have the optimum drainage performance, and discharge stones more easily by itself to improve the service life and safety of tire.

Description

Anti-column structure of tire groove

The invention relates to a groove structure, in particular to a recessed design which is recessed on the tire tread and combined with the inner wall of the groove to improve the drainage performance of the tire and to prevent the occurrence of the stone.

Most vehicles use the wheels to roll forward or backward, while the tires are the medium between the ground and the rim. They use shock-absorbing properties of plastic materials to make the car body travel. It cushions the impact from the ground and enhances the comfort of the ride.

The carcass of the tire must be supported, and the high-strength ply, belt layer, or metal belt is embedded in the tire body, wherein the material of the ply is mostly glass fiber or polyamide fiber; the tread of the tire is A number of treads are added to increase drainage and grip, and even reduce noise.

Recently, the technology of tires has been developed to the function of anti-clip stone, mainly to solve the problem of tire running, especially in non-laying road conditions, often leading to small gravel entering and being stuck in the tread, and this stone case It often causes the drainage performance of the tire to drop. Especially when the high-loaded bus or truck tires are subjected to a concentrated stone, a concentrated stress is generated at the periphery of the small gravel-carrying groove. Cracks are generated, resulting in a shortened service life. In severe cases, even a puncture will endanger driving safety.

Further analysis of the tire technology with anti-column can be broadly divided into two categories: "convex" and "recessed". The "recessed" means that the groove is arranged in the groove along the groove. The groove is provided to provide a larger space to avoid the occurrence of a stone, such as the tread structure disclosed in U.S. Patent No. 4,747,435; the "protrusion" is a platform in which the groove is protruded from the bottom surface of the groove. The preset height is to prevent the small gravel from being stuck in the depth of the tread, and the anti-stone effect can be achieved only by the shallow portion, as disclosed in U.S. Patent No. 7,980,281 and U.S. Patent No. 5,492,161. Tire groove structure.

The present invention is directed to a "bulge-type" tire anti-clip stone, which is disclosed in U.S. Patent No. 7,980,281, which provides a tire system with a tread providing a groove portion, and the groove The slot is separated by a grounding portion; one of the protruding strips extends along the extending direction of the groove portion to provide a groove bottom portion of the groove portion; the protruding stripe provides a top portion protruding toward the outer edge of the tire, and a base portion is narrow The top head is connected to each of the top head and the bottom of the groove; wherein the height H of the protruding strip and the groove D depth D have an H/D ratio of 0.22.

Another type of "embossed" tire anti-gravel structure, such as that disclosed in U.S. Patent No. 5,492 One of the reinforcing portions extends from at least one side of the groove toward the center, the width of the corresponding groove is reduced to a lower portion, and a narrow shoulder includes a plurality of narrow cut grooves to provide each of the reinforcing portions Exceeding the substantial overall width, and the upper half of the groove of the non-same side, the shoulder is formed at an interval ranging from 3 to 10 mm, in the vertical direction to the longitudinal direction of the shoulder of the tire groove, and the tire One end of the shoulder opens to the groove And the other end of the shoulder is closed and stops at the reinforcing portion.

In the above-mentioned "convex-type" structure, the former is in the bottom of the groove and extends to a predetermined height of the top head in the direction of the opening of the groove, and the latter forms a platform-like reinforcing portion in a groove and a bottom of the groove in the groove. In order to reduce the space of the tread and try to avoid the small gravel being stuck in the depth of the groove, it is even more difficult to discharge automatically and smoothly.

However, in the former case, the neck formed by the base is actually more likely to be inserted into the neck of the smaller outer diameter after entering the stone, and it is more difficult to achieve the effect of self-discharging; the latter structure will When the tire is worn to the platform, the overall groove is narrowed, and the volume of the water supply flow in the groove is greatly reduced, the drainage property is also greatly reduced, and the slip phenomenon is easily caused in the tire travel; therefore, the inventor of the present invention Providing a tread-proof tread structure to solve the aforementioned problems, and at the same time achieving better drainage and service life.

In view of the above, the anti-grain structure of the tire girth disclosed in the present invention is set on a tread in a predetermined number, and comprises: a tread groove extending from a groove bottom and two side edge walls. The height of the open groove is defined by the first side wall and the second side wall respectively having a predetermined slope, and the slopes of the first and second side walls are different a convex step group disposed in the sipe groove, the protrusion having a predetermined height on the first side wall and a second protrusion on the second side wall a convex step, each of the first and second convex steps respectively Forming a curved surface of the curvature and extending continuously along each of the first and second sidewalls, and each of the first and second convex steps has a different height; and the plurality of slopes are utilized by the member The first and second side walls of the two sides of the two sides are respectively provided with the first and second convex steps respectively having different convex curvatures, so that the stone enters the groove and is less likely to be stuck with small gravel, thereby achieving The effect of anti-gravel stone, while reducing the fluid turbulence, results in better drainage performance and easier discharge of the stone itself to improve tire life and safety.

The main object of the present invention is to provide an anti-column structure for a tire tread, which is formed by forming a convex step group of each of the two sidewall faces of the tread groove with different preset curvatures, so that the stone enters the groove and the convex step. When the group produces point-to-point contact, it is difficult to clamp small gravel and achieve the effect of preventing stone.

A second object of the present invention is to provide an anti-column structure for a tire tread, which is formed by a convex step group in which the side walls of the two sides are dislocated to each other along the sidewalls of the tread groove, so that the fluid can be placed in the sipe groove. The inner side flows along a certain direction to reduce the spoilage, and has better drainage performance.

A further object of the present invention is to provide an anti-column structure for a tire bead having two sidewalls having different slopes and a design in which the width of the groove is gradually enlarged toward the tread so that it is stuck in the tread groove. The small gravel, combined with the centrifugal force generated by the rolling of the tire, makes it easier to discharge the stone by itself to improve the life and safety of the tire.

First, please refer to the first to fourth figures. The anti-column structure of the tire groove provided by the present invention is set on a tread (50) in a predetermined number, and includes: a tread groove ( 10), and a convex step group (20) disposed in the sipe (10).

The tread groove (10) is an open groove shape with a groove bottom (11) and two side edge walls extending at a predetermined height, and the two side edge walls are respectively set to have a first side wall having a predetermined slope ( 12) and a second side wall (13); each of the first and second side walls (12) (13) has a different wall slope, and the edge of the center of the tire tread (50) is the same a sidewall (12) adjacent to the sidewall of the shoulder (40) is the second sidewall (13); the first sidewall (12) and the trench bottom (11) are inclined more than the second sidewall (13) The inclination of the groove bottom (11).

The convex step group (20) is disposed in the sipe groove (10), and has a first protruding step (21) protruding from a predetermined height on the first side wall (12), and a protruding preset a second protrusion (22) on the second side wall (13), the protrusion heights of the first and second protrusions (21) (22) are different, and each of the first and second protrusions Steps (21) and (22) respectively projecting curved surfaces with a predetermined curvature, which are continuously extended along each of the first and second side walls (12) (13), and are disposed on the first side wall (12) The first convex step (21) has a convex thickness which is larger than a protruding thickness dimension of the second convex step (22) provided on the second side wall (13); the first convex step (21) is a plurality of protrusions (211) and a plurality of recesses (212) are continuously arranged; the second protrusions (22) are formed by continuously arranging a plurality of protrusions (221) and a plurality of recesses (222); each of the recesses ( 212) (222) respectively separating each of the first and second convex steps (21) (22) to form a plurality of consecutive flange faces, and each of the first and second convex steps (21) (22) a wavy curve parallel to the bottom of the groove (11); each of the first and second convex steps (21) (22) each having a concave groove (23), which is continuously arranged with a predetermined spacing and a predetermined number of extensions of the first and second convex steps (21) (22), And each of the grooves (23) is disposed on the convex portion (211) (221).

The first and second side walls (12) (13) on both sides of the different slopes are respectively provided by the above-mentioned members, and the first and second convex steps respectively having different convex curvatures are respectively disposed thereon. (21) (22), it is easier for the stone to enter the tread groove (10) to make small gravel, and the effect of preventing the stone, and reducing the fluid turbulence to produce better drainage performance. And it is easier to discharge the stones by themselves to improve the life and safety of the tires.

In order to further understand the structural features, technical means and desired effects of the present invention, the manner of use of the present invention is described as follows: The present invention is formed in a manufacturing process to integrally form each of the sipe grooves (10) and a convex step group (20), wherein the sipe (10) comprises the groove bottom (11), and the first and second side walls (12) (13) having different slopes on both sides; the convex step group ( 20) comprising first and second convex steps (21) (22) respectively disposed on each of the first and second side walls (12) (13) and having different convex curvatures, and a plurality of grooves (23) on the second convex step (21) (22); and at the same time, the concave portion (212) (222) and the convex portion constituting each of the first and second convex steps (21) (22) 211) (221), wherein the first and second side walls (12) (13) are arranged in a staggered manner, and each of the concave portion (212) (222) and the convex portion (211) (221) are at the bottom of the groove Adjacent ridge lines form a parallel wave curve.

Referring to the fifth figure, the relative spatial form and position between the components of the present invention, wherein the heights of the first and second convex steps (21) (22) to the bottom of the groove (11) The size range (D2) is 30%-50% of the tread (50) to the height dimension (D1) of the groove bottom; the inclination angle (A) of the first side wall (12) and the groove bottom (11) 65-85 degrees; the range of inclination angle (B) between the second side wall (13) and the bottom of the groove (11) is 55-80 degrees; the width of each of the grooves (23) ranges from 0.1 to 1.5 mm Each recess (23) has a recessed depth dimension ranging from 30% to 60% of the protrusion thickness (W1) (W2) of each of the first and second protrusions (21) (22); The distance between the grooves (23) ranges from 2 to 55 mm.

Further, the inclination angle (A) of the first side wall (12) of the present invention near the center of the tread (50) is larger than the inclination angle (B) of the second side wall (13) of the shoulder (40); The convex (22) convex thickness (W2) is smaller than the first convex (21) convex thickness (W1); this technical feature is such that the first side wall near the center of the tread (50) 12) The angle of inclination (A) is steeper, and the second side wall (13) close to the shoulder (40) is inclined at a shallower angle when the stone enters the sipe (10) and the tread of the tire (50) When contacted with the ground, the load generated by gravity causes the tread to be pressed, and the tread (50) curvature becomes gentler. When the tire leaves the road surface, the original design arc of the tread will produce a restoring force, making the tread (50) The curvature is restored to the original state. At this time, the tread (50) curvature can enlarge the groove width of the tread (50) tread groove (10), that is, the stone can be loosened and the stone can be automatically discharged. .

Please refer to FIG. 6 to FIG. 10 , which are schematic diagrams showing the first and second convex steps ( 21 ) and ( 22 ) extending along the continuous curve of the tread groove ( 10 ) according to the present invention. Four cross-sections aa, bb, cc, dd to illustrate the changes of the first and second side walls (12) (13) and the first and second convex steps (21) (22); wherein the aa truncation diagram For the sixth figure, the truncation diagram of bb is the seventh diagram, and the truncation diagram of cc is The eighth diagram, the truncation diagram of dd is the ninth diagram; the tenth is the combination diagram of the four cross-sections of aa, bb, cc, and dd, thereby showing the first and second side walls (12) (13) And changes in the first and second convex steps (21) (22).

On the other hand, a difference between the inclination angle (A) of the first side wall (12) and the inclination angle (B) of the second side wall (13) is matched, and each of the first and second convex steps (21) (22) is convex. The thickness (W1) (W2) design can reduce the probability of moving the stone to the center of the tread after it is discharged, avoiding the rear tire being repeatedly crushed over the same stone to produce the stone again; in addition, due to the first side wall (12) The inclination angle (A) is steep, and the angle generated by the contact with the groove bottom (11) varies greatly, and the stress concentration phenomenon is also relatively large, so that the first slope of the first convex step (21) is located ( A) The bottom is adjacent to the bottom of the groove (11) and forms a curved shape to reinforce the bottom (11) to avoid cracking.

The first and second side walls (12) (13) of the two sides of the sipe (10) are respectively formed by the first and second convex steps (21) of different preset curvature protrusions ( 22), even if the stone enters the tread groove (10), it only makes point and point contact with the convex step group (20), so it is difficult to clamp small gravel, and the effect of preventing the stone is prevented. The effect of the stone is better than the conventional structure; further, the first and second side walls (12) (13) of the invention having different inclinations, and the structure in which the width of the groove is gradually expanded toward the tread (40) The design can make the small gravel that has been stuck in the tread groove (10), and the centrifugal force generated by the rolling of the tire can more easily discharge the stone by itself to improve the life and safety of the tire, and solve the problem after the stone is removed. It is difficult to discharge and causes the stress concentration at the stone to be cracked, and the service life is short.

According to the present invention, each of the first and second convex steps (21) (22) is on both side walls. The concave portion (212) (222) and the convex portion (211) (221) are mutually dislocated, and are continuously disposed along the two side walls of the sipe groove (10), so that the fluid can follow the trend in the tread groove (10). The flow is reduced in the case where the spoiler is generated in the groove of the tread groove (10), and the present invention has better drainage performance than the conventional structure.

In the convex step group (20) of the present invention, even if the tire is worn to each of the first and second convex steps (21) and (22), the groove width between the two side walls is still a considerable distance, so the same degree of wear Under the condition of the present invention, the drainage property of the present invention is still superior to the conventional structure; the groove (23) of the present invention is designed to be worn to each of the first and second convex steps (21) (22) to each When the groove (23) contacts the ground, it can still maintain a certain effect of drainage and reduce the occurrence of slippage.

In summary, the "anti-column structure of a tire tread" disclosed in the present invention provides a tread structure having a superior drainage and anti-gebbing function, and the convex step group is designed in the tread groove. The first and second side walls of the different slopes on both sides are used to make the groove width gradually expand toward the tread, and the first and second convex steps of the different convex curved surfaces are respectively disposed in the first and the second On the two side walls, in order to reduce the contact area between the stone and the convex step, and reduce the rigidity of the convex step, the centrifugal force in combination with the tire running will make the stone easily discharge automatically with the rotation thereof, and the drainage performance can be maintained after the wear is considerable. In order to avoid the damage and damage caused by the small and medium-sized stone between the tread groove and the convex step group, the service life can be prolonged and the safety of driving can be improved, and a tread structure with high practicality is obtained. In order to make the whole industry practical and cost-effective, and its structure has not been seen in the publications or public use, it is in line with the requirements of the invention patent application, and please ask the Bureau to grant the patent as soon as possible.

It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the concept of the present invention are still beyond the spirit of the specification and drawings. In the meantime, it should be combined with Chen Ming within the scope of the present invention.

[this invention]

(10) ‧‧‧The tread groove

(11) ‧‧ ‧ bottom

(12)‧‧‧First side wall

(13) ‧‧‧second side wall

(20) ‧ ‧ convex group

(21)‧‧‧First convex step

(211)‧‧‧ convex

(212) ‧ ‧ recess

(22)‧‧‧second convex steps

(221) ‧‧‧ convex

(222)‧‧‧ recess

(23) ‧‧‧ Groove

(40)‧‧‧ Shoulder

(50)‧‧‧Tread

The first figure is a partial perspective view of a preferred embodiment of the invention.

The second figure is a partial enlarged view of a preferred embodiment of the present invention.

The third figure is a partial cross-sectional view of a preferred embodiment of the present invention.

The fourth figure is a partial cross-sectional enlarged view of a preferred embodiment of the present invention.

Figure 5 is a partial cross-sectional enlarged view of a preferred embodiment of the present invention.

Figure 6 is a partial cross-sectional enlarged view of a-a of a preferred embodiment of the present invention.

Figure 7 is a partial cross-sectional enlarged view of a portion b-b of a preferred embodiment of the present invention.

Figure 8 is a partial cross-sectional view showing a portion c-c of the preferred embodiment of the present invention.

Figure 9 is a partially enlarged cross-sectional view of the d-d of the preferred embodiment of the present invention.

Figure 9 is a schematic view showing a partial cross-sectional change of a preferred embodiment of the present invention.

(10) ‧‧‧The tread groove

(20) ‧ ‧ convex group

(40)‧‧‧ Shoulder

(50)‧‧‧Tread

Claims (10)

The anti-clip structure of the tire girth is set on a tread surface by a preset number, and comprises: a tread groove, which is an open groove shape with a groove bottom and two side edge walls extending at a preset height, The side walls of the two sides are respectively configured as a first side wall and a second side wall having a predetermined slope, and the slopes of the edge walls of the first and second side walls are different; The first groove of the first sidewall is protruded from the first groove, and the second protrusion is disposed on the second sidewall, each of the first And the second convex step respectively protrudes from the curved surface of the predetermined curvature, and is continuously extended along the first and second sidewalls, and the protruding heights of the first and second convex steps are different. According to the anti-grain structure of the tire groove according to claim 1, wherein the height range of each of the first and second protrusions to the bottom of the groove is 30% of the height of the tread to the bottom of the groove. -50%. The anti-column structure of the tire groove according to claim 1, wherein a wall adjacent to a center of the tread of the tire is the first side wall, and a wall adjacent to the shoulder wall is the second side wall, the first side wall The inclination angle with the bottom of the groove is greater than the inclination angle of the second side wall and the bottom of the groove. The anti-column structure of the tire gutter according to claim 3, wherein the inclination angle of the first side wall and the bottom of the groove ranges from 65 to 85 degrees; the inclination angle range between the second side wall and the bottom of the groove It is 55-80 degrees. According to the anti-column structure of the tire gutter described in Item 1 of the patent application scope, The first convex step is formed by continuously arranging a plurality of convex portions and a plurality of concave portions; the second convex step is formed by continuously arranging a plurality of convex portions and a plurality of concave portions. According to the anti-grain structure of the tire groove according to claim 5, wherein each of the concave portions respectively divides the first and second convex steps to form a plurality of circumferentially arranged plurality of flange faces, so that each of the first 1. The second convex step forms a parallel wavy curve with the bottom of the groove. According to the anti-column structure of the tire girth according to claim 1, wherein each of the first and second convex steps is respectively provided with a concave groove, which is extended by a preset interval and a preset number. The extension of the first and second convex steps is continuously set. According to the anti-grain structure of the tire groove according to claim 7, wherein the groove has a width dimension ranging from 0.1 to 1.5 mm; each of the grooves has a recessed depth dimension ranging from the first to the first The thickness of the second convex step is 30%-60%; the distance between the grooves ranges from 2 to 5 mm. According to the anti-column structure of the tire groove according to Item 7 of the patent application, wherein the first and second convex steps are respectively formed by a plurality of convex portions and a plurality of concave portions continuously arranged; each of the grooves is disposed at On the convex part. The anti-grain structure of the tire gutter according to claim 1, wherein a wall adjacent to a center of the tread of the tire is the first side wall, and a wall adjacent to the sidewall of the shoulder is the second side wall. The first convex step on a sidewall has a protruding thickness dimension greater than the second convex step disposed on the second sidewall.