CN215751738U - Light truck tire bead - Google Patents
Light truck tire bead Download PDFInfo
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- CN215751738U CN215751738U CN202121779972.7U CN202121779972U CN215751738U CN 215751738 U CN215751738 U CN 215751738U CN 202121779972 U CN202121779972 U CN 202121779972U CN 215751738 U CN215751738 U CN 215751738U
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- tire body
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Abstract
The utility model provides a light truck tire bead, which comprises a tire body, an inner liner, a steel wire ring, a bead filler and an outer protective rubber; the apex comprises an upper apex positioned close to the end face of the tire bead structure and a lower apex positioned in the tire bead structure; a steel wire ring is arranged at the bottom of the lower triangular rubber; the outer part of the triangular rubber is wrapped with a tire body, and the outer part of the tire body is wrapped with a steel ladle; a molding adhesive tape is arranged between the outer end point of the steel ladle and the outer end point of the carcass; the outer layer of sidewall rubber is arranged at the outer side of the tire bead; the outer rubber protective layer and the inner liner layer are wrapped on the periphery of the steel ladle; the outer end point of the tire body is obliquely deflected towards one side of the triangular rubber. The utility model mainly makes a new tire bead form from the angle of end point force dispersion. The outer end point of the tire body is concave, so that the force is dispersed in the process of conducting the back suction force along the steel cord of the tire body, the force concentrated at the end point position is reduced, and the occurrence of cracks can be avoided.
Description
Technical Field
The utility model relates to the technical field of tires, in particular to a light truck tire bead, which improves the performance of the light truck tire, and particularly improves the load resistance and deformation resistance of the tire bead.
Background
With the development of society, the safety performance of tires is more and more emphasized, light trucks are mainly used for short-distance transportation within 500 kilometers of radius, and as short-distance transportation tools, the light trucks mainly benefit from the improvement of urbanization rate and the expansion of road networks. Therefore, the requirements for load resistance and deformation resistance of the tire bead part in practical use are high.
The general bead form of the existing light truck is shown in figure 2, the integral form is wrapped outside a tire body, the end point of the tire body is higher than the wrapping, and the difference is 10-15 mm. By adopting the tire bead form, when the tire is actually used, the end position of the tire body is cracked, and large-area bulges or cracks are formed in extension, so that the use safety is seriously influenced. The analysis is mainly that the outer side of the tire body and the bottom of a tire bead of the tire are in an upright state in the using process of the tire, the stress of the tire body is completely concentrated at an endpoint position along a steel wire, and the endpoint is cracked due to reciprocating deformation and extrusion at the endpoint position.
Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an efficient light truck tire bead.
In order to solve the technical problem, the utility model provides a light truck tire bead, which comprises a tire body, an inner liner, a steel wire ring, a bead filler and an outer protective rubber;
the apex comprises an upper apex positioned close to the end face of the tire bead structure and a lower apex positioned in the tire bead structure;
a steel wire ring is arranged at the bottom of the lower triangular rubber;
the outer part of the triangular rubber is wrapped with a tire body, and the outer part of the tire body is wrapped with a steel ladle;
a molding adhesive tape is arranged between the outer end point of the steel ladle and the outer end point of the carcass;
the outer layer of sidewall rubber is arranged at the outer side of the tire bead;
the outer rubber protective layer and the inner liner layer are wrapped on the periphery of the steel ladle;
the outer end point of the tire body is obliquely deflected towards one side of the triangular rubber.
As an improvement to a light truck tire bead of the present invention:
the outer end point of the ladle is higher than the outer end point of the matrix.
As an improvement to a light truck tire bead of the present invention:
the deflection angle of the outer end point of the tire body relative to the horizontal axis is 70-80 degrees.
As an improvement to a light truck tire bead of the present invention:
the difference between the outer end point of the ladle and the outer end point of the tire body is 10-15 mm.
As an improvement to a light truck tire bead of the present invention:
the total thickness of the triangular glue and the profile rubber strip on the inner side of the outer end point of the steel ladle is approximately equal to the total thickness of the outer protective glue and the sidewall glue on the outer side of the outer end point of the steel ladle.
The technical advantages of the light truck tire bead of the utility model are as follows:
since the existing form is mainly caused by the concentration of the end point force, the utility model mainly makes a new bead form from the point of view of end point force dispersion. The outer end point of the tire body is concave, so that the force is dispersed in the process of conducting the back suction force along the steel cord of the tire body, the force concentrated at the end point position is reduced, and the occurrence of cracks can be avoided.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of a light truck tire bead according to the present invention;
fig. 2 is a schematic structural view of an original tire bead.
In the figure: the glue part comprises 1-upper triangular glue; 2-lower triangular glue; 3-sidewall rubber; 4-outer protective glue; 5-a steel wire ring; 6-tire body; 7-steel ladle; 8-an inner liner layer; 9-type rubber strip.
Detailed Description
The utility model will be further described with reference to specific examples, but the scope of the utility model is not limited thereto.
Example 1, a bead for a light truck tire, as shown in fig. 1, comprises a carcass 6, an inner liner 8, a bead ring 5, apex, and outer rubber 4;
the apex comprises an upper apex 1 positioned close to the end surface part of the tire bead structure and a lower apex 2 positioned in the tire bead structure;
a steel wire ring 5 is arranged at the bottom of the lower triangular glue 2;
the outer part of the triangular rubber is wrapped with a tire body 6, and the outer part of the tire body 6 is wrapped with a steel ladle 7;
a molding adhesive tape 9 is arranged between the outer end point of the steel ladle 7 and the outer end point of the tire body 6;
the outer layer of sidewall rubber 3 is arranged at the outer side of the tire bead;
the outer protective glue 4 and the lining layer 8 are wrapped on the periphery of the steel ladle 7.
The outer end point of the tire body 6 is concave, namely the outer end point of the tire body 6 is obliquely deflected towards one side of the apex, and the deflection angle of the outer end point of the tire body 6 relative to the horizontal axis is 70-80 degrees optimal.
In practice, there is a withdrawal force on the carcass 6, which is transmitted along the carcass steel cords, ending in an end position, causing the end and the compound to peel off, resulting in a split. According to the conventional design, the back suction force is almost completely concentrated at the end position, and if the angle design is formed between the carcass turn-up and the rubber compound, the back suction force is dispersed in the process of being conducted along the steel cord of the carcass, and finally the force concentrated at the end position is reduced. The angle of 70-80 degrees is mainly considered from the process passability, if the angle is too small, air is easy to be trapped between the tire body 6 and the upper bead filler 1 in the molding process, and the finished tire is easy to have delamination and defects.
The outer end point of the ladle 7 is higher than the outer end point of the tire body 6, the difference level is preferably 10-15mm, and the outer end point of the tire body 6 is protected by the ladle 7.
The total thickness of the apex 1 and the molding compound 9 at the inner side of the outer end point of the steel ladle 7 is approximately equal to the total thickness of the outer protective compound 4 and the sidewall compound 3 at the outer side of the outer end point of the steel ladle 7. The total thickness of the outer protective rubber 4 and the sidewall rubber 3 can be increased as much as possible, so that the total thickness of the outer protective rubber 4 and the sidewall rubber 3 is larger than the total thickness of the triangular rubber 1 and the molding compound 9 on the inner side of the outer end point of the steel ladle, and the tire bead performance can be improved.
Compared with the original tire bead form, the utility model needs to be adjusted mainly comprises the following three points:
firstly, the thicknesses of sidewall rubber 3 and outer protective rubber 4 at the end points of a steel ladle 7 and a tire body 6 are increased;
secondly, the shape of the upper triangular rubber 1 is reformed, the outer end point of the tire body 6 is concave (namely, the outer end point of the tire body 6 is obliquely deflected towards one side of the triangular rubber), and the deflection angle of the outer end point of the tire body 6 relative to a horizontal axis is optimal from 70 degrees to 80 degrees;
and the outer end point of the steel ladle 7 wraps the outer end point of the tire body 6.
Compared with the original tire bead, the tire bead performance machine tool test is carried out under 200% load, and the machine tool time of the light-truck tire bead is 2 times longer than that of the original tire bead. The machine data was upgraded from 32h10min to 65h12min for testing in the 8.25R16LT tire.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the utility model. It is obvious that the utility model is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.
Claims (5)
1. A light truck tire bead characterized by: comprises a tire body (6), an inner liner layer (8), a steel wire ring (5), triangular glue and outer protective glue (4);
the apex comprises an upper apex (1) and a lower apex (2), wherein the upper apex is positioned close to the end face of the bead structure, and the lower apex is positioned inside the bead structure;
a steel wire ring (5) is arranged at the bottom of the lower triangular glue (2);
the outer part of the triangular rubber is wrapped with a tire body (6), and the outer part of the tire body (6) is wrapped with a steel ladle (7);
a molding adhesive tape (9) is arranged between the outer end point of the ladle (7) and the outer end point of the tire body (6);
an outer layer of sidewall rubber (3) is arranged at the outer side of the tire bead;
the outer protective rubber (4) and the inner lining layer (8) are wrapped on the periphery of the steel ladle (7);
the outer end point of the tire body (6) is obliquely deflected towards one side of the triangular rubber.
2. A light truck tire bead as in claim 1, wherein:
the outer end point of the ladle (7) is higher than the outer end point of the tire body (6).
3. A light truck tire bead as in claim 2, wherein:
the deflection angle of the outer end point of the tire body (6) relative to the horizontal axis is 70-80 degrees.
4. A light truck tire bead as in claim 3, wherein:
the difference between the outer end point of the ladle (7) and the outer end point of the tire body (6) is 10-15 mm.
5. A light truck tire bead as in claim 4, wherein:
the total thickness of the apex (1) and the molding strip (9) on the inner side of the outer end point of the steel ladle (7) is approximately equal to the total thickness of the outer protective rubber (4) and the sidewall rubber (3) on the outer side of the outer end point of the steel ladle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121779972.7U CN215751738U (en) | 2021-08-02 | 2021-08-02 | Light truck tire bead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121779972.7U CN215751738U (en) | 2021-08-02 | 2021-08-02 | Light truck tire bead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215751738U true CN215751738U (en) | 2022-02-08 |
Family
ID=80109066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121779972.7U Active CN215751738U (en) | 2021-08-02 | 2021-08-02 | Light truck tire bead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215751738U (en) |
-
2021
- 2021-08-02 CN CN202121779972.7U patent/CN215751738U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 311600 Xia Ya Zhen Chun Qiu Cun, Jiande City, Hangzhou City, Zhejiang Province Patentee after: Zhongce Rubber (Jiande) Co.,Ltd. Address before: 311600 Xia Ya Zhen Chun Qiu Cun, Jiande City, Huzhou City, Zhejiang Province Patentee before: Zhongce Rubber (Jiande) Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |