TWI780852B - Tire pattern structure for preventing stone trapping - Google Patents

Abstract

The present invention mainly provides a tire pattern structure for preventing stone trapping, which has at least one groove in the tire tread circumferential direction, and the groove has a groove bottom and two groove walls adjacent to the groove bottom. In the tire groove that protrudes from the bottom of the groove and continuously surrounds the tire, the protruding rib is a multi-curved rib, and the protruding rib includes a first surface, a second surface, and a third surface, of which the second The two ends of the surface are respectively connected to the first surface and the third surface, and are set on a platform, which is not adjacent to the groove walls on both sides. With the above-mentioned pattern structure, the anti-stone trapping pattern can produce creep when the tire is running, and then Discharge the stones to prevent the stones from getting deeper and deeper. At the same time, the protruding ribs can increase the heat transfer area and air convection, so that the heat can be quickly transferred to the air, so as to reduce the temperature of the bottom of the groove and the protruding ribs, so as to improve the life and safety of the tire. sex.

Description

Tire pattern structure for preventing stone trapping

The present invention relates to the groove structure, especially the design of the pattern in the groove of the tire tread, combined with the design of the convex step at the bottom of the groove in order to improve the anti-stone performance of the tire and reduce the groove effect of temperature.

Generally, most vehicles use the rolling of the wheels to make the car body move forward or backward, and the tire is the medium between the ground and the car body. It uses the shock-absorbing properties of plastic materials to make the car body The impact force from the ground can be buffered during driving to improve the ride comfort.

The carcass of the tire must be supportive, and components such as high-strength ply, belt layer, or metal belt are embedded in the carcass, and the tread of the tire is provided with several tread patterns to increase drainage and grip.

Recently, the technology of tires has been developed towards the function of anti-stone trapping, mainly to solve the problem of small gravel entering and being stuck in the tire tread when the tire is running, especially on non-paved road conditions, and this stone trapping situation , tends to cause the drainage performance of the tire to decline, especially in the case of high-load bus or truck tires, if there is a rocky situation, due to long-term gravity, a concentrated stress will be generated around the tire groove stuck by small gravel. Cracks occur, resulting in shortened service life, and even tire blowouts that endanger driving safety in severe cases.

The existing anti-rock tire technology is known, in which there are lines protruding from the bottom of the groove in the tire groove, which are arranged in an asymmetrical way to avoid the occurrence of rock traps, such as the one disclosed in US Patent No. 8,225,832 "pneumatic tire", tread The part has a plurality of main grooves extending in the circumferential direction, and is divided into a plurality of blocks, and is characterized in that it includes a protrusion and a connecting part. Extending in the circumferential direction, the protrusion height h1 changes in a wave shape along the circumferential direction, the protrusion is connected to at least one groove wall of the circumferential main groove by the connecting part, and the connecting part connects the The protrusion and the wall of the circumferential main groove.

Another tire anti-stone trap structure, such as the U.S. No. 7,980,281 disclosed a "pneumatic tire with a tread with protruding stripes at the bottom of the groove and a tire mold for manufacturing tires", which provides a tire on the tire. A pneumatic tire with grooves on its surface, and a land portion divided by the grooves are characterized in that: a protruding strip extends along the circumferential groove, and the protruding strip includes a head and a base, and the head faces the tire The outer side protrudes, the base is narrower than the head, and connects the groove bottom and the head.

In view of this, the tire tread structure for preventing stone trapping disclosed in the present invention has at least one groove in the tire tread circumferential direction, and the groove has a groove bottom and two groove walls adjacent to the groove bottom. A number of protruding ribs protrude from the bottom of the groove between the groove walls on both sides in the tire groove, which is characterized in that: the protruding rib is arranged on a platform that is not adjacent to the groove walls on both sides, and the protruding rib is a multi-curved convex rib. It includes a first surface, a second surface, and a third surface, wherein two ends of the second surface are respectively connected with the first surface and the third surface.

The anti-rock tire tread structure of the present invention, when the tire is running, the protruding ribs in the groove can be deformed due to the rotation of the tire, and then the rocks can be discharged to prevent the rocks from sinking deeper, and the protruding ribs can increase heat transfer The area and the convection of the air make the heat transfer to the air quickly, so as to reduce the temperature of the bottom of the groove and the protruding rib, so as to improve the life and safety of the tire.

The main purpose of the present invention is to provide a tire pattern structure for preventing stone trapping, in which protruding ribs are arranged in the groove of the tread. With different length changes, coupled with the special curved surface produced by the height and length changes, when the tire is running, the stones caught in the groove will cause the multi-curved ribs to creep or deform due to the load on the tire and rolling. Twisted and deformed to remove the intercalated stone.

The second purpose of the present invention is to provide a tire tread structure for preventing stone trapping. Since the tire tread is provided with the stone trapping structure, the probability of rock trapping can be reduced. It is higher than that without the anti-rock trap pattern, which has a bad influence on the life of the tire. The protruding rib of the anti-rock trap structure provided by the present invention includes a first surface, a second surface, and a third surface of the protruding rib , When the tire is running, it can increase the heat transfer area and air convection, so that the heat can be quickly transferred to the air, so as to reduce the temperature of the bottom of the groove and the raised rib.

Another object of the present invention is to provide a tire tread structure for preventing stone trapping. Since the protruding ribs in the groove are set on the platform at the bottom of the groove and are not connected with the groove walls on both sides, the original groove can still be maintained. Drainage function.

[this invention]

(10): Tires

(20): tire groove

(21): Ditch bottom

(22): ditch wall

(23): tread

(W): groove width

(L1): first length

(L2): second length

(L3): third length

(w1): platform width

(w2): Protruding rib width

(30):Protruding ribs

(31): first surface

(32): second surface

(33): the third surface

(34): Platform

(H1): first height

(H2): second height

(H3): third height

(H4): platform height

Fig. 1 is a perspective view of a partial tire pattern of a preferred embodiment of the present invention.

Fig. 2 is a perspective view of a partially sectioned section of a tire according to a preferred embodiment of the present invention.

Fig. 3 is a partial front view of the tire of the preferred embodiment of the present invention.

Fig. 4 is a schematic diagram of a longitudinal section of a tire according to a preferred embodiment of the present invention.

Fig. 5 is a partial sectional view in the circumferential direction of a tire of a preferred embodiment of the present invention.

Fig. 6 is a partially enlarged sectional view of a tire in the circumferential direction of a preferred embodiment of the present invention.

Fig. 7 is a partially enlarged cross-sectional view of the unit in the preferred embodiment of the present invention in the circumferential direction.

Fig. 8 is a partially enlarged perspective view of a unit of a preferred embodiment of the present invention.

Fig. 9 is a partially enlarged longitudinal sectional view of a tire according to a fourth embodiment of the present invention.

First, please refer to Fig. 1 to Fig. 6, which is a preferred embodiment of a tire tread structure for preventing stone trapping provided by the present invention, the tread (23) of the tire (10) is provided with at least one tire groove along the tire circumferential direction (20), the tire groove (20) has a groove bottom (21) and two groove walls (22) adjacent to the groove bottom (21), and the protruding ribs (30) extend from the groove in the groove (20) The bottom (21) protrudes and continuously surrounds the groove (20) of the tire (10), the protruding rib (30) is a multi-curved rib, and the protruding rib (30) includes a first surface (31), A second surface (32), a third surface (33), wherein the two ends of the second surface (32) are respectively connected to the first surface (31) and the third surface (33), and are arranged on a platform (34) Above, the platform (34) is not adjacent to the ditch walls (22) on both sides.

Please continue to refer to Fig. 7 to Fig. 9, the first surface (31), the second surface (32), the third surface (33) of the protruding rib (30) of the present invention are calculated from the platform (34) and have a height of H1 respectively . , L1 is equal to the distance projected on the tire circumferential direction between the tangent point of the two arc surfaces of the first surface (31), the second surface (32) and the lowest point of the first surface (31), L3 is equal to the third surface (33), The projected distance between the tangent point of the two arc surfaces of the second surface (32) and the lowest point of the third surface (33) on the tire circumferential direction, L2 is equal to the distance projected on the tire circumferential direction between the above two tangent points, the platform (34) The width is w1, the width of the protruding rib (30) is w2, which is the distance between two virtual intersections (the platform extension line and the protruding rib extension line), and the groove width of the tire groove (20) is W.

Please continue to refer to Fig. 7 and Fig. 8, the first surface (31) and the third surface (33) of protruding rib (30) are respectively connected with the two ends of the second surface (32), the first surface (31), the second The surface (32) and the third surface (33) are both an arc surface, and the three are connected to form a continuous rib of a multi-curved surface. The first surface (31) and the third surface (33) can be formed by the second surface (32). Centrally symmetrical or asymmetrical design, so the length L1 of the first surface (31) can be greater than or equal to Or less than the length L3 of the third surface (33), while the height H1 of the first surface (31) and the height H3 of the third surface (33) are both smaller than the height H2 of the second surface (32).

Please cooperate with Fig. 2 to Fig. 7, the present invention is mainly to provide a tire pattern structure for preventing stone trapping, and protruding ribs (30) are arranged in the tire groove (20) of the tread (23), and the protruding ribs (30) are a The multi-curved convex ribs have different height changes in the radial direction of the tire from the platform (34) in the tire groove (20), including the first height H1, the second height H2, and the third height H3. The direction has different length changes, the first length L1 and the third length L3 are 40%~80% of the second length L2, the first height H1 and the third height H3 are between the second height H2 30%~60% echo, especially through the above-mentioned length and height changes, special curved surfaces can be formed, such as convex ribs with multiple curved surfaces, especially when the first length L1 and the third length L3 are between the second length L2 Between 50%~70% and the first height H1 and the third height H3 being between 40%~50% of the second height H2 help to increase air convection when the tire is rolling, not only can effectively achieve heat dissipation At the same time, different length ratios and/or height ratios produce a variety of irregular arrangement changes to form complex three-dimensional curved surfaces, which is more conducive to preventing stone trapping.

When the tire (10) is running, the stones caught by the grooves (20) will be twisted by the multi-curved ribs to prevent the stones from continuing to enter the grooves. When the tire (10) continues to roll, the multi-curved The protruding ribs (30) are twisted with each other, and then the stones are excluded, so as to achieve the effect of preventing stones, so as to improve the service life and safety performance of the tire.

Please continue to refer to Fig. 8 and Fig. 9 again, the protruding rib (30) of the present invention is the highest point (compared with H1 and H3) at the second height H2. The height difference is helpful for stone removal. Here, the length difference ratio is defined as (L2-L1)/L2 or (L2-L3)/L2, and the height difference ratio is equal to (H2-H1)/H2 or (H2-H3)/ H2, when the length difference ratio is more than 50% or the length difference ratio is less than 30%, when the height difference ratio is more than 60% or the height difference ratio is lower than 50%, it will lead to poor stone removal effect and may even cause stone inclusion , also because the stone will cause the heat dissipation effect of the tire to run into obstacles when running, causing the temperature to rise. Therefore, the heat of the groove bottom (21) can be transferred from the bottom platform (34) of the protruding rib (30) to the top of the protruding rib (30), and the heat of the protruding rib (30) of the anti-stone trapping pattern at the bottom of the groove can be increased. The heat transfer area and the air convection allow the heat to be quickly transferred to the air, so as to reduce the temperature of the groove bottom (21) and the protruding rib (30). Through actual walking tests, it is known that the temperature of the tire groove bottom is 82.5°C~85°C Among them, the present invention is between 78.8°C and 82.5°C. The temperature value of the conventional tire groove bottom with protruding ribs is about 72.5°C, and the present invention is about 71.8°C. Experiments show that the maximum temperature of the groove bottom can be reduced 3.7 degrees, the protruding rib can be reduced by 0.7 degrees at most, it can be seen that the heat dissipation of the present invention is obviously better than that of the conventional one.

Please refer to Fig. 9 again, the width w1 of the platform (34) below the protruding rib (30) is 15% to 45% of the overall tire groove (20) width W, and the width of the protruding rib is 70% to 90% of the platform width. If it is less than 70%, it will cause poor stone removal effect, if it is greater than 90%, it will affect the drainage function, so the platform (34) is only arranged on the bottom of the ditch (21) and is not connected to the ditch wall ( 22) Connection, keep the gap to provide better drainage function.

To sum up the above, the present invention discloses the "tire tread structure for anti-rock trapping", which utilizes protruding ribs with multiple curved surfaces to be arranged at appropriate positions in the tread groove of the tire tread, especially when the bottom of the groove is not connected to the groove. Wall connection, and matching the appropriate raised rib height and length according to various specifications of tires, can improve the anti-stone trapping effect and maintain drainage performance, and effectively reduce the temperature of the bottom of the groove and raised ribs to ensure the control and life of the tire. Road tires with high practicability, so that the whole has industrial practicability and cost-effectiveness, and its structure has never been seen in books or public use. It truly meets the requirements for invention patent applications. Pray for gratitude.

It needs to be stated that the above description is the specific embodiment of the present invention and the technical principles used. If changes are made according to the concept of the present invention, the functions produced by it still do not exceed the spirit covered by the description and drawings. When, all should be stated within the scope of the present invention.

(10): Tires

(20): tire groove

(23): tread

(30):Protruding ribs

(31): first surface

(32): second surface

(33): the third surface

Claims (10)

A tire tread structure for preventing stone trapping, which is arranged on a tread of a tire, and has at least one groove in the circumferential direction of the tread, and the groove has a groove bottom and two groove walls adjacent to the groove bottom, A number of protruding ribs protrude from the bottom of the groove between the groove walls on both sides in the tire groove. The multi-curved convex rib includes a first surface, a second surface, and a third surface, wherein the two ends of the second surface are respectively connected with the first surface and the third surface. The tire tread structure for anti-rock trapping according to claim 1, wherein the first surface, the second surface and the third surface are an arc surface. The tire tread structure for preventing rock trapping according to claim 1, wherein the width of the protruding rib is 70%-90% of the width of the platform. The tire tread structure for preventing stone trapping as described in claim 1, wherein the platform extends upwards from the bottom of the groove to a height H4. The tire tread structure for anti-rock trapping according to claim 1, wherein the first length L1 of the first surface is equal to the third length L3 of the third surface. The tire tread structure for anti-rock trapping according to claim 1, wherein the first length L1 of the first surface is 50%-70% of the second length L2 of the second surface. The tire tread structure for preventing rock trapping according to claim 1, wherein the third length L3 of the third surface is 50%-70% of the second length L2 of the second surface. The tire tread structure for anti-rock trapping according to claim 1, wherein the first height H1 of the first surface is 40% to 50% of the second height H2 of the second surface. The tire tread structure for preventing rock trapping as described in Claim 1, which The third height H3 of the third surface is 40%-50% of the second height H2 of the second surface. The tire tread structure for preventing stone trapping as described in Claim 1, wherein the width w1 of the platform is 15% to 45% of the groove width W.

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