Tire bead structure

Abstract

The utility model discloses a kind of tire bead structure, belong to tire bead technical field, tire bead structure ontology includes carcass and bead core, bead core is fixedly wrapped in the inside of carcass, the outside of carcass is fixedly connected with sidewall rubber, the cooperation of carcass and hub is provided with bead wear-resistant glue, bead core is combined by bead wire, corner rubber ontology and bead core wrapping cloth, corner rubber ontology is attached to the surface of bead wire, bead core wrapping cloth is fixedly covered in the outside of corner rubber ontology, this tire bead structure, the bead wire of setting is formed by double-layer or multilayer steel wire ontology winding, and the cross-sectional shape of bead wire is U-shaped, greatly improve the support strength of bead wire, and by the setting wedge-shaped corner rubber ontology and the reinforcing core and reinforcing layer of corner rubber ontology setting, the hardness of triangular rubber strip can be increased, and then the deformation resistance of triangular rubber strip is improved.

Description

Technical Field

[0001] This utility model relates to the field of tire bead technology, and more specifically, to a tire bead structure. Background Technology

[0002] The tire bead, also known as the tire bead or rim bead, is the key part where the tire contacts and tightly connects with the rim (steel rim). It is located on the inner edge of the tire and is usually composed of a steel wire bead, a bead core, and a bead core covering.

[0003] Currently, the triangular rubber strips used in traditional tire bead structures have low hardness and are easily deformed. At the same time, the steel wire ring is wound with a single layer of steel wire, which reduces the support strength. For example, a tire bead structure suitable for EV pure electric passenger vehicles disclosed in publication number CN 114872496A includes a steel wire ring, a triangular rubber strip located at the upper end of the steel wire ring, and a tire carcass. The tire carcass includes a tire carcass layer, bead wear-resistant rubber, and sidewall rubber. The inner end point of the end of the tire carcass layer and the intersection of the triangular rubber strip form a reverse wrapping end point of the tire carcass layer. Taking the lower end point of the bead wear-resistant rubber strip at the lower end of the junction of the bead wear-resistant rubber strip and the sidewall rubber strip as the origin, the shortest perpendicular line is drawn to the triangular rubber strip to obtain the normal point of the lower end point of the bead wear-resistant rubber strip. The triangular rubber strip has a transition section of equal width. The starting point of the transition section is located at the reverse wrapping end point of the tire carcass layer, and the ending point is located below the normal point of the lower end point of the bead wear-resistant rubber strip.

[0004] As can be seen from the above-disclosed scheme, the triangular rubber in the tire bead structure is a commonly used tire rubber strip, which has low hardness and is easy to deform during use. Furthermore, the steel wire ring in the tire bead structure is a commonly used single-layer steel wire wound steel wire ring, which has a simple shape and limited support strength. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a tire bead structure. In this tire bead structure, the steel wire ring is formed by winding two or more layers of steel wire body, and the cross-sectional shape of the steel wire ring is U-shaped, which greatly improves the support strength of the steel wire ring. Furthermore, the wedge-shaped corner rubber body and the reinforcing core and reinforcing layer set in the corner rubber body can increase the hardness of the triangular rubber strip, thereby improving the deformation resistance of the triangular rubber strip.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A tire bead structure includes a tire bead structure body, which comprises a tire carcass and a bead core. The bead core is fixedly wrapped inside the tire carcass. Sidewall rubber is fixedly connected to the outer side of the tire carcass. Wear-resistant bead rubber is provided at the mating point between the tire carcass and the rim. The bead core is composed of a steel wire ring, a corner rubber body, and a bead core covering fabric. The corner rubber body is attached to the surface of the steel wire ring, and the bead core covering fabric is fixedly covering the outer side of the corner rubber body. In this tire bead structure, the steel wire ring is formed by winding two or more layers of steel wire body, and the cross-sectional shape of the steel wire ring is U-shaped, which greatly improves the support strength of the steel wire ring. Furthermore, the wedge-shaped corner rubber body, as well as the reinforcing core and reinforcing layer on the corner rubber body, can increase the hardness of the triangular rubber strip, thereby improving the deformation resistance of the triangular rubber strip.

[0008] Furthermore, the wire ring is a rigid ring, formed by winding several wire bodies together, with each wire body consisting of at least two layers of wire, which increases the rigidity of the wire ring.

[0009] Furthermore, a wear-resistant reinforcing layer is provided on the outer side of the wear-resistant rubber of the wheel hub. The wear-resistant reinforcing layer is made of highly adhesive rubber to enhance the adhesion to the wheel hub and thus improve the sealing performance.

[0010] Furthermore, a reinforcing layer is fixedly connected to the outer side of the corner adhesive body. The reinforcing layer is made of thermoplastic elastomer, which can increase the hardness of the corner adhesive body.

[0011] Furthermore, the corner adhesive body is internally reinforced with a reinforcing core made of aramid fiber, which can increase the corner adhesive body's resistance to deformation.

[0012] Furthermore, the bead core covering is made of high-strength fiber material, which can enhance wear resistance and tear resistance.

[0013] Furthermore, the steel wire ring is U-shaped to improve its sealing performance.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) The steel wire ring set in this scheme is made by winding two or more layers of steel wire body, and the cross-sectional shape of the steel wire ring is U-shaped, which greatly improves the support strength of the steel wire ring.

[0016] (2) This solution can increase the hardness of the triangular rubber strip by setting the wedge-shaped corner rubber body and the reinforcing core and reinforcing layer set in the corner rubber body, thereby improving the deformation resistance of the triangular rubber strip. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 For the present utility model Figure 1 Enlarged view of point A;

[0019] Figure 3 For the present utility model Figure 1 Enlarged view of point B.

[0020] Explanation of the labels in the diagram:

[0021] 1. Tire bead structure body; 2. Tire body; 21. Sidewall rubber; 3. Steel wire bead; 31. Steel wire body; 4. Corner rubber body; 41. Reinforcing core; 42. Reinforcing layer; 5. Bead core wrapping cloth; 6. Bead wear-resistant rubber; 61. Wear-resistant reinforcing layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please see Figure 1-3 A tire bead structure includes a tire bead structure body 1, which comprises a tire carcass 2 and a bead core. The bead core is fixedly wrapped inside the tire carcass 2. Sidewall rubber 21 is fixedly connected to the outside of the tire carcass 2. Bead wear-resistant rubber 6 is provided at the mating point between the tire carcass 2 and the rim. The bead core is composed of a steel wire ring 3, a corner rubber body 4, and a bead core covering fabric 5. The steel wire ring 3 is a rigid ring, formed by winding several steel wire bodies 31. Each steel wire body 31 has at least two layers of steel wire, which can increase... The rigidity of the steel wire ring 3 is increased. The shape of the steel wire ring 3 is U-shaped or V-shaped. Compared with the original rigid ring shape, the sealing performance is improved. The corner rubber body 4 is attached to the surface of the steel wire ring 3. The corner rubber body 4 is a tire triangular rubber strip and is wedge-shaped, which makes it easy to fill the gap between the rim and the tire bead. A reinforcing layer 42 is fixedly connected to the outside of the corner rubber body 4. The reinforcing layer 42 is made of thermoplastic elastomer, which can increase the hardness of the corner rubber body 4. The tire bead core covering fabric 5 is fixedly covered on the outside of the corner rubber body 4.

[0025] The outer side of the wear-resistant rubber 6 is provided with a wear-resistant reinforcing layer 61, which is made of high-adhesion rubber to enhance the adhesion to the wheel hub and thus improve the sealing performance. The corner rubber body 4 is internally fixed with a reinforcing core 41, which is made of aramid fiber and can increase the deformation resistance of the corner rubber body 4. The bead core wrapping fabric 5 is made of high-strength fiber material, which can enhance wear resistance and tear resistance.

[0026] During use, the steel wire ring 3, formed by winding two or more layers of steel wire body 31, with the steel wire ring 3 optimized into a U-shape or V-shape, can effectively improve rigidity and sealing performance. Moreover, the corner rubber body 4, with its reinforcing core 41 and reinforcing layer 42, can increase its hardness, so that the triangular rubber strip will not easily deform during tire use, thereby improving its deformation resistance. At the same time, the wear-resistant reinforcing layer 61 set by the bead wear-resistant rubber 6 can increase the connection and sealing with the rim. Thus, the tire bead structure can reduce the risk of delamination at the bead, make the contact with the rim tighter, reduce the air leakage rate, reduce the risk of tire blowout, and improve the wear resistance and fatigue resistance of the bead.

[0027] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A tire bead structure, comprising a tire bead structure body (1), characterized in that: The tire bead structure body (1) includes a tire body (2) and a bead core. The bead core is fixedly wrapped inside the tire body (2). The sidewall rubber (21) is fixedly connected to the outside of the tire body (2). The bead wear-resistant rubber (6) is provided at the mating point between the tire body (2) and the wheel hub. The bead core is composed of a steel wire ring (3), a corner rubber body (4), and a bead core covering (5). The corner rubber body (4) is attached to the surface of the steel wire ring (3), and the bead core covering (5) is fixedly covered on the outside of the corner rubber body (4).

2. The tire bead structure according to claim 1, characterized in that: The wire ring (3) is a rigid ring, and the wire ring (3) is formed by winding several wire bodies (31), and the wire body (31) is at least a double layer of wire.

3. The tire bead structure according to claim 1, characterized in that: The wear-resistant rubber (6) has a wear-resistant reinforcing layer (61) on its outer side, and the wear-resistant reinforcing layer (61) is made of high-adhesion rubber.

4. The tire bead structure according to claim 1, characterized in that: A reinforcing layer (42) is fixedly connected to the outside of the corner glue body (4), and the reinforcing layer (42) is made of thermoplastic elastomer.

5. A tire bead structure according to claim 1, characterized in that: The corner glue body (4) is internally fixed with a reinforcing core (41), which is made of aramid fiber.

6. The tire bead structure according to claim 1, characterized in that: The bead core covering (5) is made of high-strength fiber material.

7. A tire bead structure according to claim 1, characterized in that: The steel wire ring (3) is U-shaped.

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