CN115056608A

CN115056608A - Tubed tire for a one-piece TL rim

Info

Publication number: CN115056608A
Application number: CN202210756011.7A
Authority: CN
Inventors: 王振国; 瞿安业; 陈朋; 王程; 张凯源
Original assignee: Taikaiying Qingdao Special Tire Technology Research And Development Co ltd
Current assignee: Taikaiying Qingdao Special Tire Technology Research And Development Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-16

Abstract

The invention discloses a tire with an inner tube for a one-piece TL rim, and belongs to the technical field of tires. The technical scheme is as follows: the steel wire ring of the tire comprises a plurality of thick steel wires and thin steel wires, wherein the thick steel wires are positioned in the middle of the steel wire ring, and the thin steel wires are filled at the periphery of the thick steel wires, so that the whole steel wire ring is of a circular structure. The invention is convenient to install and disassemble, ensures the performance of the tire, meets the market demand and greatly improves the market competitiveness of the product.

Description

Tubed tire for a one-piece TL rim

Technical Field

The invention relates to the technical field of tires, in particular to a tire with an inner tube for a one-piece TL rim.

Background

The traditional tire with the inner tube has the advantage of high bearing capacity, but due to the composition of the inner tube and the cushion belt, on one hand, the cost is higher, on the other hand, due to the increase of the weight, the oil consumption of the tire is also increased, and the overall cost is higher; the traditional tubeless tire has no inner tube cushion belt, has lower cost and lower heat generation of the tire, but has poorer bearing performance. In order to take the advantages of the two types of rim into consideration, the TL rim in one piece is appeared on the market at present, and when the traditional tire with the inner tube is matched with the rim, the assembly and disassembly are difficult, sometimes, the tire is even damaged, and the cost is improved.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the inner tube tire for the one-piece TL rim is provided, the tire performance is guaranteed while the tire is convenient to mount and dismount, the market demand is met, and the market competitiveness of the product is greatly improved.

The technical scheme of the invention is as follows:

a have inner tube tire for a formula TL rim, the steel wire winding of tire includes a plurality of thick steel wire and thin steel wire, and thick steel wire is located the intermediate position of steel wire winding, and thin steel wire is filled at thick steel wire periphery, makes whole steel wire winding be circular structure, has guaranteed the installation and the dismantlement of tire.

Preferably, all the thick steel wires are arranged in a honeycomb structure, and the thin steel wires are filled outside six side edges of the honeycomb structure.

Preferably, the tire bead is in a step-type change from small to large in the direction from the bead heel to the bead toe, and can be fully contacted with a rim, so that air leakage in the using process is guaranteed.

Preferably, a circle of bulges are arranged on the contact surface of the tire bead and the rim, and the bulges are closed-loop lines and are positioned between the bead heel and the bead toe, so that air leakage cannot occur in the contact process of the tire and the rim.

Preferably, the protrusions are wavy.

Preferably, the height of the protrusions is 0.2-0.4 mm.

Preferably, 3+9+15 × 0.225HT is used as the carcass steel wire of the tire, so as to ensure the rigidity of the sidewall of the tire.

Preferably, the ratio of the thickness of the tire shoulder to the thickness of the crown is 1.35-1.4, so that the rigidity of the tire side wall is increased, and the ring part of the tire is supported to enable the ring part to be easily contacted with the tire, and the air tightness is ensured.

Preferably, the inner liner of the tire is made of 100 wt% of brominated butyl rubber, so that the air tightness of the tire in the use process is ensured.

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

1. the tire adopting the structural design can effectively solve the problem that the tire with the inner tube is difficult to mount and dismount when matched with the one-piece TL rim, can save the cost, simultaneously reduces the failure rate, and generates certain friction heat between the inner tube and the tire under normal conditions.

2. The angle of the tire bead of the tire is changed in a step shape from small to large, the tire bead can be fully contacted with a rim, and air leakage in the using process is guaranteed.

3. The contact surface of the tire bead and the rim is provided with a circle of bulges, so that air leakage is avoided in the contact process of the tire and the rim.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic view of the structure of a tire.

Fig. 2 is a schematic view of a conventional bead ring structure.

Fig. 3 is a schematic structural view of the tire bead ring of the present invention.

Fig. 4 is a profile plot of a conventional tire bead.

Figure 5 is a profile plot of a tire bead of the present invention.

Fig. 6 is a schematic view of a conventional bead protrusion.

Fig. 7 is a schematic view of the bead protrusion of the present invention.

In the figure, 1-steel wire ring, 2-thick steel wire, 3-thin steel wire, 4-bead heel, 5-bead toe and 6-bulge.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1 and 3, the present embodiment provides a tubed tire for a one-piece TL rim, a bead ring 1 of the tire includes a plurality of thick steel wires 2 and thin steel wires 3, the thick steel wires 2 are located at the middle position of the bead ring 1, and the thin steel wires 3 are filled around the thick steel wires 2, so that the entire bead ring 1 has a circular structure. The arrangement shape of the thick steel wires 2 in the middle can be determined according to actual conditions, but the arrangement of the thick steel wires 2 in a honeycomb structure and the manner that the thin steel wires 3 are filled outside six side edges of the honeycomb structure are easy to realize.

Taking the 12.00R24 tire as an example, the conventional bead ring structure of the tire mostly adopts a hexagonal structure (as shown in fig. 2) formed by arranging thick steel wires with the diameter of 1.8mm, and the steel wires are easy to be scattered under the condition of large deformation. In the bead ring structure of the embodiment, firstly, 4-5-6-7-6-5-4 thick steel wires 2 with the diameter of 1.8mm are arranged in a honeycomb structure, and then 48 thin steel wires 3 with the diameter of 0.64mm are arranged on the outer layer, so that the integral style of the bead ring 1 is circular as shown in fig. 3. The steel wire ring 1 with the structure has better deformation resistance, can not generate the conditions of wire scattering and the like under the use condition of large deformation, and ensures that the performance of the tire can still be ensured even if the tire has large deformation in the mounting and dismounting processes.

The outer thin steel wire 3 is a high-tensile steel wire with good extensibility, the high-tensile steel wire 3 is wound around the steel wire ring 1 and can still recover the original shape under large deformation, and the extensibility of the steel wire ring 1 is far superior to that of a steel wire with a common structure. Meanwhile, the steel wire ring is of a round-like structure formed by surrounding the thin steel wires 3 and the thick steel wires 2, the stability of the steel wires is better, the original shape can be better maintained under the condition of large deformation, and the steel wire ring 1 is not easy to scatter.

Example 2

In example 1, as shown in fig. 5, the angle of the tire bead changes stepwise from small to large in the direction from the bead heel 4 to the bead toe 5. The angle at which the conventional tire bead is a constant value (3 ° as shown in fig. 4) is prone to air leakage. The design of the embodiment can provide the bearing performance, ensure the sufficient contact between the tire and the rim and ensure no air leakage in the use process. This is because the angle from the heel 4 to the toe 5 changes from 3 ° to 5 ° and then to 7 °, the rubber in this region gradually passing from a clearance fit to an interference fit with the rim as the inclination increases, and at the 7 ° angle, i.e. the toe 5 position, the rubber is in sufficient contact with the rim to ensure that the tire is airtight.

Table 1 shows a comparison of tire pressure conditions of the conventional bead design and the bead design of the present embodiment under the same conditions, and the stepped design of the present embodiment is better in air retention than the conventional structural design.

TABLE 1

Example 3

In addition to example 1, as shown in fig. 7, a circle of protrusions 6 are provided on the contact surface between the tire bead and the rim, and the protrusions 6 are closed-loop lines and are located between the heel 4 and the toe 5. Preferably, the protrusions 6 are wavy, and the height of the protrusions 6 is 0.2-0.4 mm. This design ensures that the tire and rim will not leak air during contact, because, compared with the conventional straight protrusion (as shown in fig. 6), the design of the wavy protrusion 6 of this embodiment not only maintains the function of increasing the friction with the rim and preventing the tire and rim from slipping, but also prevents the air from leaking through the whole circumference of the wavy closed-loop design, and the conventional straight protrusion has the risk of air leakage because it is not a closed-loop design.

Table 2 shows the comparison of the tire air pressure between the conventional linear protrusion and the wavy protrusion of this embodiment under the same conditions, and the air retention property is better than that of the linear protrusion by adopting the wavy protrusion of this embodiment.

TABLE 2

Example 4

On the basis of example 1, 3+9+15 × 0.225HT was used as the carcass wire of the tire. The common tire mostly adopts 0.25+6+12X0.225HT steel wires, and the thin and weak rigidity of the carcass steel wires cause the side wall of the tire to be soft, thereby the ring part of the tire cannot be supported, and the ring part of the tire cannot be fully contacted with a rim and cannot be inflated. And the carcass steel wire of this embodiment adopts 3+9+15 × 0.225HT, has guaranteed the rigidity of side wall, and the tire can be inflated easily. This is because the bending stiffness of the 3+9+15 × 0.225HT wires is much greater than that of the 0.25+6+12X0.225HT wires, i.e. in the same case, the sidewall stiffness of the 3+9+15 × 0.225HT carcass tire is greater, the tire support performance is better, and the bead and rim can be fully contacted when the normal tire is inflated while lying flat, rather than having a large gap and being unable to inflate.

Example 5

On the basis of example 1, as shown in fig. 1, the ratio of the shoulder thickness (shoulder thickness) to the crown-in-crown thickness (crown thickness) of the tire was 1.35 to 1.4. The ratio of the thickness of the shoulder of a general tire to the thickness of the crown is 1.3, but the ratio is improved to 1.35-1.4 in the embodiment, so that the inner contour of the shoulder is excessively smoother, the curvature radius is larger, the rigidity of the tire side wall is increased, and the ring part of the tire is supported to enable the ring part to be easily contacted with the tire, and the air tightness is ensured.

Example 6

Based on example 1, the inner liner of the tire was made of 100 wt% bromobutyl rubber. The air-tight layer of the common tire with the inner tube is mainly made of 65 wt% of brominated butyl rubber and 35 wt% of natural rubber, and the air-tight layer using the formula has relatively poor air retention, so that the problems of air leakage and air leakage in the middle and later period of use are easily caused. In the embodiment, 100 wt% of brominated butyl rubber is used as the inner liner, so that a good air retention effect is ensured even if an inner tire cushion belt is not used.

Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions should be within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure and the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A tubed tire that is used for one-piece formula TL rim, characterized in that, bead ring (1) of tire includes a plurality of heavy wire (2) and thin steel wire (3), and heavy wire (2) are located bead ring's (1) intermediate position, and thin steel wire (3) are filled at heavy wire (2) periphery, make whole bead ring (1) be circular structure.

2. A tubed tire for a one-piece TL rim as in claim 1, characterized by all the thick steel wires (2) arranged in a honeycomb structure, the thin steel wires (3) filling out six sides of the honeycomb structure.

3. A tubed tire for a one-piece TL rim according to claim 1 characterized in that the tire bead varies stepwise from small to large in angle from heel (4) to toe (5) direction.

4. A tubed tyre for a one-piece TL rim according to claim 1, characterized in that the contact surface of the tyre bead with the rim is provided with a ring of protrusions (6), the protrusions (6) being in a closed loop and located between the bead heel (4) and the bead toe (5).

5. A tubed tire for a one-piece TL rim according to claim 4 where the protrusions (6) are wavy.

6. A tubed tyre for a one-piece TL rim according to claim 4 or 5 characterized in that the height of the protrusions (6) is 0.2-0.4 mm.

7. A tubed tire for a one-piece TL rim as in claim 1 wherein the carcass wire of said tire employs 3+9+15 x0.225 HT.

8. A tubed tire for a one-piece TL rim as in claim 1 wherein the ratio of the shoulder thickness of the tire to the thickness in the crown is 1.35 to 1.4.

9. A tubed tire for a one-piece TL rim as in claim 1 wherein the inner liner of said tire is made with 100 wt% bromobutyl rubber.