Ring part structure for improving internal crack of tire bead seam allowance
By adding reinforcing films and second steel wire reinforcements at the inner wrapping points of the tire's steel wire reinforcement, the problem of cracking of the inner liner composite caused by overloading or improper use is solved, and tear resistance is improved.
Patent Information
- Application Number
- CN202423294166.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The bezel structure of existing all-steel radial truck tires is prone to stress concentration at the steel wire reinforcement in the circumferential wrapping point during use due to vehicle overloading or improper use, which can lead to circumferential cracking of the inner liner composite component.
A reinforcing film and a second steel wire reinforcement are added to the inner inverted point of the tire's steel wire reinforcement. The combination of U-shaped steel wire and reinforcing film enhances the modulus of the inner inverted point and improves tear resistance.
It effectively reduces the risk of cracking of the inner liner composite due to overloading or improper use during tire use, and improves the tear resistance of the steel wire reinforced inner wrapping point.
Smart Images
Figure CN223803357U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of radial tire, specifically a kind of structure of improving bead subport inner crack. BACKGROUND
[0002] Tire is the circular elastic rubber product for being equipped on various vehicles or machines, is generally installed on metal wheel rim, for supporting vehicle body, buffering external impact, and realizing contact with road surface, to ensure the driving performance of vehicle, tire is generally composed of inner tube and outer tire, modern tire is mostly tubeless design, i.e.
[0003] The structure design of the bead of the common full-steel load radial tire, in use process, often appear, due to vehicle overload or improper use etc., make the endpoint of steel wire reinforcing inner reverse wrapping point, appear stress concentration wind phenomenon, cause the circumference of inner liner composite to appear cracking problem, based on this, now provide a kind of structure of improving bead subport inner crack, can eliminate the drawbacks of prior art. UTILITARIAN CONTENT
[0004] The utility model aims at providing a kind of structure of improving bead subport inner crack to solve the problems in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:
[0006] A kind of structure of improving bead subport inner crack, including tire, the tire is provided with steel ring for supporting, the outer side of the steel ring is sleeved with rubber core, the outer wall of the rubber core is sleeved with inner liner composite, the outer wall of the inner liner composite is sleeved with sidewall wear-resistant glue, the inner liner composite is formed with carcass outer reverse wrapping point, the carcass outer reverse wrapping point is located above the end of steel wire reinforcing outer reverse wrapping point, the inner liner composite is provided with improving mechanism for improving bead subport inner crack.
[0007] On the basis of the above technical solutions, the utility model further provides the following optional technical solutions:
[0008] In an alternative solution, the improving mechanism comprises:
[0009] supporting assembly provided on the inner liner composite;
[0010] The support assembly is a first steel wire arranged between the inner liner composite and the sidewall wear-resistant rubber, the first steel wire is in a U-shaped profile, one end of the first steel wire is formed with a steel wire reinforcing outer turn-up point, and the other end of the first steel wire is formed with a steel wire reinforcing inner turn-up point.
[0011] The first steel wire is provided with a first reinforcing assembly.
[0012] In an alternative, the first reinforcing assembly is a reinforcing rubber sheet arranged on the outer side of the first steel wire, the reinforcing rubber sheet is fully attached to the outer wall of the first steel wire, the reinforcing rubber sheet is sleeved on the outer wall of the steel wire reinforcing inner turn-up point, the reinforcing rubber sheet is fully attached to the inner wall of the inner liner composite, one end of the reinforcing rubber sheet is formed with a reinforcing rubber sheet lower end point, and the other end of the reinforcing rubber sheet is formed with a reinforcing rubber sheet upper end point.
[0013] The first steel wire is provided with a second reinforcing assembly.
[0014] In an alternative, the second reinforcing assembly is a second steel wire arranged on the inner side of the first steel wire, one end of the second steel wire is formed with a newly added reinforcing steel wire lower end point, and the other end of the second steel wire is formed with a newly added reinforcing steel wire upper end point.
[0015] In an alternative, the tire is respectively provided with an auxiliary line a and an auxiliary line b, the auxiliary line a and the auxiliary line b intersect with each other, the intersection point of the auxiliary line a and the auxiliary line b is located at the end of the carcass outer turn-up point, the auxiliary line a is the horizontal height of the carcass outer turn-up point, and the auxiliary line b is perpendicular to the carcass inner contour line.
[0016] Compared with the prior art, the utility model has the beneficial effects as follows:
[0017] The utility model discloses an improved mechanism, which can increase the modulus of the first steel wire at the inner turn-up end point, improve the tear resistance of the inner liner composite at the inner end point of the first steel wire, reduce the quality risk of the product inner crack, and effectively improve the stress concentration phenomenon of the steel wire reinforcing inner turn-up point end point caused by vehicle overload or improper use during tire use, thereby solving the problem of the circumferential cracking of the inner liner composite. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is a structural schematic diagram of the utility model.
[0019] Fig. 2 It is a newly added reinforcing structure schematic diagram of the utility model.
[0020] Reference sign annotation: 1, the outer reverse wrapping point of the carcass; 2, the outer reverse wrapping point of the steel wire reinforcement; 3, the rubber core; 4, the bead; 5, the sidewall wear-resistant rubber; 6, the inner liner composite; 7, the inner reverse wrapping point of the steel wire reinforcement; 8, the lower end point of the reinforcing rubber sheet; 9, the upper end point of the reinforcing rubber sheet; 10, the lower end point of the newly added reinforcing steel wire; 11, the upper end point of the newly added reinforcing steel wire. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below with reference to the drawings and examples.
[0022] In one embodiment, as shown in Figs. 1-2 A bead structure for improving the inner crack of the bead sub-port, comprising a tire, the tire is provided with a bead 4 for support, the outer side of the bead 4 is sleeved with a rubber core 3, the outer wall of the rubber core 3 is sleeved with an inner liner composite 6, the outer wall of the inner liner composite 6 is sleeved with a sidewall wear-resistant rubber 5, the inner liner composite 6 is formed with a carcass outer reverse wrapping point 1, the carcass outer reverse wrapping point 1 is located above one end of the outer reverse wrapping point 2 of the steel wire reinforcement, and the inner liner composite 6 is provided with an improvement mechanism for improving the inner crack of the bead sub-port;
[0023] The improvement mechanism comprises a support assembly arranged on the inner liner composite 6;
[0024] The support assembly is a first steel wire arranged between the inner liner composite 6 and the sidewall wear-resistant rubber 5, the outer shape of the first steel wire is in the shape of U, one end of the first steel wire is formed with the outer reverse wrapping point 2 of the steel wire reinforcement, and the other end of the first steel wire is formed with the inner reverse wrapping point 7 of the steel wire reinforcement;
[0025] The first steel wire is provided with a first reinforcing assembly;
[0026] The first reinforcing assembly is a reinforcing rubber sheet arranged on the outer side of the first steel wire, the reinforcing rubber sheet is completely attached to the outer wall of the first steel wire, the reinforcing rubber sheet is sleeved on the outer wall of the inner reverse wrapping point 7 of the first steel wire, the reinforcing rubber sheet is completely attached to the inner wall of the inner liner composite 6, one end of the reinforcing rubber sheet is formed with the lower end point 8 of the reinforcing rubber sheet, and the other end of the reinforcing rubber sheet is formed with the upper end point 9 of the reinforcing rubber sheet;
[0027] The first steel wire is provided with a second reinforcing assembly;
[0028] The second reinforcing assembly is a second steel wire arranged on the inner side of the first steel wire, one end of the second steel wire is formed with the lower end point 10 of the newly added reinforcing steel wire, and the other end of the second steel wire is formed with the upper end point 11 of the newly added reinforcing steel wire;
[0029] In this embodiment, it needs to be particularly pointed out that: Fig. 1 It is a schematic view of the existing tire structure without newly added reinforcement;
[0030] The inner end point of the first steel wire is protected by increasing the reinforcing rubber sheet on the tire body side of the steel wire reinforcing inner turn-up point 7 and adding a second steel wire reinforcing on the inner side. In this way, the modulus of the first steel wire at the reinforcing inner turn-up point 7 is increased during use of the tire, the tear resistance of the inner liner composite 6 at the inner end point of the first steel wire is improved, the quality risk of the inner crack of the product bead is reduced, and the problem of stress concentration at the end point of the steel wire reinforcing inner turn-up point 7, which easily leads to circumferential cracking of the inner liner composite 6 due to overload or improper use during actual use of the tire, is effectively solved.
[0031] The reinforcing rubber sheet needs to be selected from a high modulus formula, which is the same as the formula for coating the end point of the ordinary steel wire part. The second steel wire needs to be made of a material with a smaller diameter and a lower calender density than the U-shaped steel wrapping material, but the calender density cannot be less than 30 epd.
[0032] In one embodiment, as shown in Fig. 2 The auxiliary line a and the auxiliary line b are arranged on the tire respectively, the auxiliary line a and the auxiliary line b intersect with each other, the intersection point of the auxiliary line a and the auxiliary line b is located at the end of the tire body outer turn-up point 1, the auxiliary line a is the horizontal height of the tire body outer turn-up point 1, and the auxiliary line b is perpendicular to the tire body inner contour line.
[0033] The above embodiment discloses a bead structure for improving the inner crack of the bead, wherein the inner end point of the first steel wire is protected by increasing the reinforcing rubber sheet on the tire body side of the steel wire reinforcing inner turn-up point 7 and adding a second steel wire reinforcing on the inner side. In this way, the modulus of the first steel wire at the reinforcing inner turn-up point 7 is increased during use of the tire, the tear resistance of the inner liner composite 6 at the inner end point of the first steel wire is improved, the quality risk of the inner crack of the product bead is reduced, and the problem of stress concentration at the end point of the steel wire reinforcing inner turn-up point 7, which easily leads to circumferential cracking of the inner liner composite 6 due to overload or improper use during actual use of the tire, is effectively solved.
[0034] During production, the height of the steel wire reinforcing inner turn-up point 7 can be within a certain range of the auxiliary line a, and the height of the steel wire reinforcing inner turn-up point 7 can be floated up and down within a certain range of the auxiliary line a, but cannot be lower than the inner end point of the tire side wear-resistant rubber 5 + 10 mm and cannot be higher than the auxiliary line b + 15 mm.
[0035] The reinforcing rubber sheet needs to be selected from a high modulus formula, which is the same as the formula for coating the end point of the ordinary steel wire part. The thickness is 0.5-2.0 mm, the width is set to be greater than the upper end point 9 of the reinforcing rubber sheet by more than 10 mm, the lower end point 10 of the newly added reinforcing steel wire must be lower than the upper end point 7 of the steel wire reinforcing inner turn-up point by more than 10 mm, and there is no limit to the lower end point. Based on cost considerations, the total width can be controlled to be less than or equal to 100 mm.
[0036] The second steel wire needs to use a material with a smaller line diameter and a lower calendering density than the U-shaped steel bag cloth material, but the calendering density should be greater than 30 epd. The width of the reinforcing material is set to be greater than 15 mm above the inner reverse wrapping point 7 of the steel wire reinforcement, and the lower end point 8 of the reinforcing rubber sheet must be lower than 15 mm below the inner reverse wrapping point 7 of the steel wire reinforcement, and the total width is less than or equal to 60 mm.
[0037] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A bead structure for improving the bead unthreading crack, comprising a tire, a steel bead (4) provided on the tire for support, a rubber core (3) sleeved on the outer side of the steel bead (4), an inner liner composite (6) sleeved on the outer wall of the rubber core (3), a sidewall wear-resistant rubber (5) sleeved on the outer wall of the inner liner composite (6), and a carcass outer turn-up point (1) formed on the inner liner composite (6) and located above one end of a steel wire reinforced outer turn-up point (2), characterized in that, The inner liner composite (6) is provided with an improvement mechanism for improving the bead unthreading inner crack; The improvement mechanism comprises a support assembly provided on the inner liner composite (6); The support assembly is a first steel wire provided between the inner liner composite (6) and the sidewall wear-resistant rubber (5), the first steel wire has a U-shaped appearance, one end of the first steel wire is formed with a steel wire reinforcing outer turn-up point (2), and the other end of the first steel wire is formed with a steel wire reinforcing inner turn-up point (7); The first steel wire is provided with a first reinforcing assembly.
2. The bead structure of claim 1 wherein, The first reinforcing assembly is a reinforcing rubber sheet provided on the outer side of the first steel wire, the reinforcing rubber sheet is completely attached to the outer wall of the first steel wire, the reinforcing rubber sheet is sleeved on the outer wall of the steel wire reinforcing inner turn-up point (7) of the first steel wire, the reinforcing rubber sheet is completely attached to the inner wall of the inner liner composite (6), one end of the reinforcing rubber sheet is formed with a reinforcing rubber sheet lower end point (8), and the other end of the reinforcing rubber sheet is formed with a reinforcing rubber sheet upper end point (9). The first steel wire is provided with a second reinforcing assembly.
3. A bead structure for improving the bead unseating split as claimed in claim 2, wherein The second reinforcing assembly is a second steel wire provided on the inner side of the first steel wire, one end of the second steel wire is formed with a newly added reinforcing steel wire lower end point (10), and the other end of the second steel wire is formed with a newly added reinforcing steel wire upper end point (11).
4. The bead structure of claim 3 wherein, The tire is respectively provided with an auxiliary line a and an auxiliary line b, the auxiliary line a and the auxiliary line b intersect with each other, the intersection point of the auxiliary line a and the auxiliary line b is located at the end of the carcass outer turn-up point (1), the auxiliary line a is the horizontal height of the carcass outer turn-up point (1), and the auxiliary line b is perpendicular to the carcass inner contour line.