Tire with good puncture resistance

Abstract

The utility model relates to the field of tires, in particular to a tire with good puncture resistance, which comprises a tire body and a puncture-proof layer, the puncture-proof layer is used for improving the puncture resistance of the tire body and is attached to the inner wall of the tire in a vulcanization manner; and an anti-falling structure is arranged between the puncture-proof layer and the tire inner wall. According to the anti-puncture tire, the anti-puncture layer is attached to the tire inner wall of the tire body, the anti-puncture layer adopts the nano adhesive tape, and the thickness of the nano adhesive tape is one fifth to one third of that of the tire wall of the tire body, so that the anti-puncture capability of the whole tire body can be improved, and the nano adhesive can block puncture holes even if puncture occurs and a puncture object is pulled out, so that the tire does not leak air. And the whole tire wall is not too thick after vulcanization and lamination, so that the puncture-proof capability is ensured, and the light weight of the whole tire is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, specifically to a tire with good puncture resistance. Background Technology

[0002] Vehicles such as cars and electric vehicles need to be equipped with rubber tires. Currently, vehicle tires are primarily made of rubber. Because tires are in direct contact with the ground and rub against it while the vehicle is in motion, they must also possess high wear resistance and flexural strength. Maintaining a certain air pressure is essential during vehicle operation. If a tire is punctured by a sharp object while driving, causing air leakage, it will affect driving safety and render the vehicle immobile. Therefore, preventing tire punctures and leaks is of paramount importance for driving safety.

[0003] Current tire puncture protection methods generally include:

[0004] 1. Applying a special sealant to the inner wall of the tire (typically, CN1303409A, puncture-resistant tire composition and its coating method) can automatically fill small punctures and prevent air leakage. However, this method has a drawback: during high-speed driving or in hot weather, the tire temperature can easily reach or exceed a certain level (e.g., 110°C). The puncture-resistant tire sealant manufactured using existing technology will then flow inside the tire, not only rendering the tire ineffective at preventing punctures but also potentially disrupting the tire's dynamic balance and preventing the vehicle from reaching high speeds.

[0005] 2. Add a puncture-resistant strip between the tire and the inner tube to prevent punctures from sharp objects. This method can also effectively prevent small punctures. However, to integrate the puncture-resistant strip into the tire, the tire's structure needs to be optimized, which increases the manufacturing difficulty. Utility Model Content

[0006] The purpose of this invention is to provide a tire with good puncture resistance to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A tire with good puncture resistance includes a tire carcass and a puncture-resistant layer, wherein:

[0009] The fetal body has an inner wall;

[0010] The puncture-resistant layer is used to improve the puncture resistance of the tire body and is attached to the inner wall of the tire by vulcanization.

[0011] The puncture-resistant layer has an anti-detachment structure between it and the inner wall of the tire.

[0012] Furthermore, the anti-detachment structure includes a protrusion integrated with the inner wall of the tire, the side of the protrusion having a notch, the puncture-resistant layer having an opening for the protrusion to fit into, and having an extension portion in the opening that matches the notch.

[0013] Furthermore, the notch has a gradually decreasing slope from top to bottom, and has a "C"-shaped groove at the top for hooking the extension portion.

[0014] Furthermore, the anti-detachment structure includes a protrusion integrated with the inner wall of the tire, the sides of which have textures or small holes.

[0015] Furthermore, the puncture-resistant layer has edges on both sides, each edge being one-sixth to one-tenth the length of the middle section between the two edges.

[0016] Furthermore, the edge extends to both sides of the inner wall of the tire, and the thickness gradually decreases until it reaches 0, forming a transition.

[0017] Furthermore, the tire body has a sidewall rubber layer, and a toe wire is embedded in the sidewall rubber layer near its end.

[0018] Furthermore, the stab-resistant layer is made of nano-adhesive tape.

[0019] To achieve the above objectives, this utility model also provides the following technical solution:

[0020] A method for manufacturing a tire with good puncture resistance, comprising:

[0021] The tire body is formed in a mold, and the inner wall of the tire body has an integrated protrusion;

[0022] Make an opening in the puncture-resistant layer, then attach it tightly to the inner wall of the tire and make the protrusion fit over the opening;

[0023] The tire carcass with the puncture-resistant layer is placed in a vulcanizing machine and vulcanized under set conditions so that the puncture-resistant layer is bonded to the tire carcass and ultimately glued together.

[0024] Furthermore, the set conditions are: vulcanization temperature of 160-170°C, vulcanization pressure of 15-25 MPa, and vulcanization time of 25-35 min.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This invention improves the puncture resistance of the tire by attaching a puncture-resistant layer to the inner wall of the tire body. The puncture-resistant layer, made of nano-adhesive tape, is one-fifth to one-third the thickness of the tire wall. Because the nano-adhesive tape has adhesive properties on the side in contact with the inner wall, it adheres and bonds to the inner wall during subsequent vulcanization. Even if a puncture occurs and the puncture object (such as a nail) is removed, the nano-adhesive seals the puncture hole, preventing air leakage. Furthermore, the anti-detachment structure ensures good fixation between the puncture-resistant layer and the inner wall after vulcanization. It also meets the needs of different types of existing tires (such as those for automobiles and electric vehicles) to enhance puncture resistance. The manufacturing process is relatively simplified and easy to operate, shortening production time. The overall tire wall thickness after vulcanization is not excessive, ensuring puncture resistance while also contributing to the overall tire's lightweight design. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure at point AA.

[0029] Figure 3 This utility model Figure 2 A schematic diagram of the longitudinal section structure.

[0030] Figure 4 This utility model Figure 3 A magnified schematic diagram of the specific structure at point A in the middle.

[0031] Figure 5 This utility model Figure 3 A magnified schematic diagram of another specific structure at point A in the middle.

[0032] Figure 6 This is a schematic diagram of the tread pattern on the tire surface of this utility model.

[0033] In the diagram: 1-Tire body, 2-Inner wall of tire, 3-Protrusion, 4-Anti-puncture layer, 5-Anti-detachment structure, 6-Notch, 7-Extension, 8-Groove, 9-Tread or small hole, 10-Edge, 11-Side rubber layer, 12-Center, 13-Toe wire, 14-Shoulder tread I, 15-Intermediate tread I, 16-Intermediate tread III, 17-Intermediate tread IV, 18-Intermediate tread II, 19-Shoulder tread II, 20-Transverse groove I, 21-Blind hole, 22-Groove, 23-Longitudinal main groove I, 24-Longitudinal main groove II. Detailed Implementation

[0034] 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.

[0035] In the description of this utility model, it should be noted that the terms "upper end," "lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Please see Figures 1 to 4 This utility model provides a technical solution:

[0038] A tire with good puncture resistance includes a tire carcass 1 and a puncture-resistant layer 4, wherein:

[0039] The fetal body 1 has an inner wall 2;

[0040] The puncture-resistant layer 4 is used to improve the puncture resistance of the tire body 1 and is attached to the inner wall 2 of the tire by vulcanization.

[0041] The puncture-resistant layer 4 has an anti-detachment structure 5 between it and the inner wall 2 of the tire.

[0042] In this embodiment, the anti-detachment structure 5 includes a protrusion 3 integrated with the inner wall 2 of the tire. A notch 6 is provided on the side of the protrusion 3. An opening for the protrusion 3 to fit into the puncture-resistant layer 4 is provided on the layer, and an extension 7 matching the notch 6 is provided within this opening. A C-shaped groove 8 is provided at the top of the notch 6 for hooking the extension 7.

[0043] In this embodiment, by attaching the puncture-resistant layer 4 to the inner wall 2 of the tire carcass 1, the puncture-resistant layer 4, made of nano-adhesive tape, with a thickness of one-fifth to one-third of the tire carcass wall, can improve the overall puncture and penetration resistance of the tire carcass 1. Simultaneously, because the puncture-resistant layer 4 is made of nano-adhesive tape, the side of the nano-adhesive in contact with the inner wall 2 is adhesive, allowing the puncture-resistant layer 4 to adhere / bond with the inner wall 2 during subsequent vulcanization. Even if a puncture occurs and the puncturing object (such as a nail) is pulled out, the nano-adhesive can seal the puncture hole, preventing tire leakage. Furthermore, the anti-detachment structure 5 ensures good fixation between the puncture-resistant layer 4 and the inner wall 2 after vulcanization, and can enhance the puncture resistance of different types of existing tires (such as automobiles and electric vehicles). The manufacturing process and method are relatively simplified, the operation is easier, and the manufacturing time is relatively shortened. After vulcanization, the overall tire wall is not excessively thick, ensuring not only puncture resistance but also contributing to the overall tire's lightweight design.

[0044] In this embodiment, when the puncture-resistant layer 4 is attached to the inner wall 2 of the tire, the opening of the puncture-resistant layer 4 fits over the protrusion 3. After attachment, the top of the protrusion 3 is flush with the opening. Since the extension portion 7 matches the notch 6 and can hook the extension portion 7 through the groove 8, the puncture-resistant layer 4 can be more firmly fixed / attached to the inner wall 2 of the tire after attachment and vulcanization. Even if the temperature inside the tire is high (such as reaching 110°C) during summer and high-speed tire rotation, the puncture-resistant layer 4 can still be firmly attached to the inner wall 2 of the tire and will not easily fall off, thus not affecting the puncture-resistant effect of the tire. At the same time, the protrusion 3 is integrated with the inner wall 2 of the tire, which also improves the strength of the tire crown.

[0045] In this embodiment, the slope of the notch 6 gradually decreases from the top to the bottom, that is, as shown in... Figure 4 As shown, the opening of the notch near the top is deeper, while the opening of the notch near the bottom is shallower. This not only ensures that the extension part 7 can be accommodated in the notch 6 to the maximum extent, ensuring that the groove 8 has a good hooking effect, but also ensures that the protrusion 3 has good tensile stress when subjected to the force of the anti-puncture layer 4.

[0046] In this embodiment, the puncture-resistant layer 4 has edges 10 on both sides, and the length of each edge 10 is one-sixth to one-tenth of the length of the middle portion 12 between the two edges 10. Alternatively, the edges 10 extend towards both sides of the inner wall 2 of the tire, gradually decreasing in thickness until 0, forming a transition. This design of the edges 10 can prevent the puncture-resistant layer 4 from falling off and lifting. Furthermore, the symmetrical design of the edges 10 on both sides of the middle portion 12 helps to dynamically balance the tire, which also helps to eliminate or reduce imbalance, making the vehicle tire more stable when driving at high speeds.

[0047] Specifically, the tire carcass 1 has a sidewall rubber layer 11, and a bead wire 13 is embedded near the end of the sidewall rubber layer 11. The bead wire 13 is used to increase the connection strength of the tire structure.

[0048] This embodiment also provides a method for manufacturing a tire with good puncture resistance, including:

[0049] The tire body 1 is formed in a mold, and the inner wall 2 of the tire body 1 has an integrated protrusion 3.

[0050] Make an opening in the puncture-resistant layer 4, then attach it tightly to the inner wall 2 of the tire and make the protrusion 3 fit over the opening;

[0051] The tire body 1 with the puncture-resistant layer 4 is placed in a vulcanizing machine and vulcanized under set conditions so that the puncture-resistant layer 4 is bonded to the tire body 1 and finally glued together.

[0052] Specifically, by using a vulcanizing machine at a high temperature of 165°C and a high pressure of 20MPa for 30 minutes, the nano-rubber compound can achieve better bonding with the inner wall of the tire, allowing the tire puncture-resistant components to exert their best effect.

[0053] It should be noted that the tire body 1 in this embodiment can be a commercially available tire, such as a car tire, a motorcycle tire, or an electric vehicle tire, etc. The protrusion 3 can be manufactured as needed. Of course, the tire body 1 can also be a custom-made tire processed according to customer needs, in which case the number of tire layers and materials will differ. Those skilled in the art can choose according to actual needs, which will not be elaborated here.

[0054] It should be noted that, in this embodiment, the nano-adhesive tape can also be several arc-shaped segments sequentially attached to the inner wall 2 of the tire, forming a single ring shape consistent with the tire body 1 after attachment. Then, during the vulcanization process, the adjacent nano-adhesive joints are bonded together.

[0055] The tire of this embodiment is suitable for low-profile vehicles, especially electric vehicle tires. Due to the presence of nano-adhesive, the side in contact with the inner wall 2 of the tire is adhesive, so the puncture-resistant layer 4 can adhere / bond to the inner wall 2 during subsequent vulcanization. Even if a puncture occurs and the puncture object (such as a nail) is pulled out, the nano-adhesive can seal the puncture hole to prevent the tire from leaking air, giving the tire self-sealing properties. It is safe and convenient to use and has good market application potential.

[0056] Example 2

[0057] Please see Figure 5 This utility model provides a technical solution that is basically the same as that of Embodiment 1, with slight differences in the following aspects:

[0058] The anti-detachment structure 5 includes a protrusion 3 integrated with the inner wall 2 of the tire, and the side of the protrusion 3 has textures or small holes 9.

[0059] In this embodiment, compared with embodiment 1, when the puncture-resistant layer 4 is attached to the inner wall 2 of the tire body 1 and vulcanized, the nano-adhesive material is more likely to combine with the texture or small holes 9 on the protrusion 3. It also makes the mold structure for making the tire body 1 and the shape of the protrusion 3 simpler. This is because the notch 6 and the gradually decreasing slope of the notch 6 from top to bottom and the "C"-shaped groove 8 at the top of the notch 6 in embodiment 1 are missing. Naturally, the manufacturing difficulty will be reduced.

[0060] Please see Figure 6 This utility model provides a technical solution that is basically the same as that of Embodiments 1 and / or 2, with slight differences in the following aspects:

[0061] In this embodiment, tire treads are provided on the tire surface of the tire body 1. The tire treads adopt a single-guided, large-angle, wide square pattern design. The tire treads include shoulder treads I14, II19, I15, II18, III16, and IV17, which are distributed from left to right at intervals.

[0062] Shoulder treads I14 and 19 are symmetrically distributed about the longitudinal main groove II24. The shoulder treads feature a large, continuous arrangement of shoulder treads I and II, resulting in a highly saturated shoulder. This ensures the lateral and torsional rigidity of the tire carcass 1, as well as its wear resistance and grip during cornering, counteracting the centrifugal force generated during cornering and preventing the vehicle from fishtailing. Semi-enclosed lateral grooves I20 are continuously spaced, forming an inclined inverted V-shape, with their depth gradually decreasing from near the center tread towards the outer edge.

[0063] In this embodiment, the intermediate tread pattern I 18 and intermediate tread pattern II 18 have two blind holes 21 of different sizes, which can "shred" the noise zone on the tire tread separately when the tire is traveling at high speed, reducing the transmission of noise and thus reducing the noise generated by the tire during driving, providing a good driving comfort. The continuously set sawtooth grooves 22, with a large slope design of the groove surface, not only provide excellent dry and wet grip performance, handling performance and support, but also have smooth lines, fast acceleration and are not easy to slip. At the same time, the sawtooth large slope continuous design of the grooves 22 can also effectively release the compressed air in the tread grooves quickly, reducing the frequency of air compression in the tire tread during driving.

[0064] Both intermediate treads III16 and IV17 have a wavy shape, with wavy longitudinal main grooves I23 and straight longitudinal main grooves II24 respectively. This not only improves drainage efficiency and handling on wet and slippery roads, but also the arrangement of the grooves and intermediate treads is a combination of wavy grooves, intermediate treads, straight grooves, intermediate treads, and wavy grooves, which effectively reduces the generation of heat in the tire crown during driving, prevents tread heat from causing tread blockage, and improves handling and driving safety performance.

[0065] In this embodiment, the arrangement of grooves and intermediate patterns increases the tread surface, which can effectively improve high-speed stability and provide better grip, especially when turning and on wet and slippery roads, thus improving driving safety.

[0066] The parts of this utility model not described are existing technologies.

[0067] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tire having good puncture resistance, characterized by, The invention relates to a tire (1) comprising a carcass (2) and a puncture-proof layer (4), wherein: the carcass (2) has an inner wall (1); the puncture-proof layer (4) is used to improve the puncture resistance of the carcass (2) and is attached to the inner wall (1) by vulcanization; the puncture-proof layer (4) and the inner wall (1) have an anti-extraction structure (5).

2. A tire with good puncture resistance as set forth in claim 1, characterized in that, the anti-extraction structure (5) comprises a protrusion (3) integrated with the inner wall (2), the side of the protrusion (3) is provided with a notch (6), the puncture-proof layer (4) is provided with an opening for the protrusion (3) to fit into, and the opening is provided with an extension (7) matching the notch (6).

3. A tire with good puncture resistance as claimed in claim 2, characterized in that, the notch (6) has a gradually decreasing slope from the top to the bottom, and the top of the notch (6) is provided with a "C"-shaped groove (8) for hooking the extension (7).

4. A tire with good puncture resistance as defined in claim 1, characterized in that, the anti-extraction structure (5) comprises a protrusion (3) integrated with the inner wall (2), and the side of the protrusion (3) is provided with a pattern or a small hole (9).

5. A tyre according to one of claims 1 to 4, characterised in that, the puncture-proof layer (4) is provided with edges (10) on both sides, and each edge (10) has a length of one sixth to one tenth of the length of the middle part (12) between the two edges (10).

6. A tire with good puncture resistance as claimed in claim 5, characterized in that, the edges (10) extend to both sides of the inner wall (2) and gradually decrease in thickness until 0, forming a transition.

7. A tire with good puncture resistance as defined in claim 1, wherein the carcass (1) is provided with a bead rubber layer (11), and the bead rubber layer (11) is provided with toe steel wires (13) embedded near the end.

8. A tire with good puncture resistance as in claim 1 wherein, the puncture-proof layer (4) is made of nano adhesive tape.

9. A tyre with good resistance to punctures as claimed in any one of claims 2 to 4, characterised in that, the top of the protrusion (3) is flush with the opening.

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