Silent cotton tire

Abstract

The invention provides a mute cotton tire which comprises a tire and a wheel body, a wheel side is arranged on the tire, mute annular cotton is arranged on the opposite sides of the tire and the wheel body, the mute annular cotton is attached to the annular inner side wall of the tire, a fixing base is fixedly installed on the inner side wall of the tire, and the fixing base is annularly arranged. The side wall, away from the silent annular cotton, of the fixing base is attached to the tire, an annular groove is formed in the side wall, opposite to the silent annular cotton, of the fixing base, the annular groove is perpendicular to the plane of the fixing base and forms a concave structure, and a connecting assembly is arranged on the fixing base. Compared with a tire in the prior art, through the arrangement of the mute annular cotton, the tire can still be ensured to continuously run for a long distance even under the emergency condition that the air pressure of the tire is suddenly and strongly lost, so that the driving safety is guaranteed. Meanwhile, due to the design of the mute annular cotton, comfort is considered, noise in the driving process is effectively reduced, and a quiet and comfortable driving and riding environment is provided for customers.

Description

Technical Field

[0001] The invention relates to the technical field of semi-steel radial tires, in particular to a silent sponge tire. Background Art

[0002] With the rapid development of the electric vehicle market and the overall progress of society, consumers' requirements for vehicles are no longer limited to basic driving functions, but pay more attention to comfort, quietness and safety in the driving experience.

[0003] For example, the application of self-healing materials in the current market can automatically repair the damaged area when pierced by foreign objects with a diameter not exceeding 6 mm, thereby effectively preventing air leakage.

[0004] When faced with more serious tire damage (such as being penetrated by a sharp object), it is difficult to completely avoid the driving safety hazards caused by the sharp drop in air pressure, which will not only shorten the drivable distance, but also affect the vehicle's handling stability and braking efficiency, thereby threatening the lives of passengers. At the same time, traditional tires will produce a large amount of air vibration noise during high-speed rotation, which not only reduces the quality of the in-vehicle environment, but may also distract the driver's attention and indirectly increase the risk of traffic accidents. Summary of the invention

[0005] The present invention provides a silent cotton tire, which is used to solve the defect in the prior art that it is difficult to completely avoid the hidden danger of driving safety caused by a sharp drop in air pressure when facing more serious tire damage.

[0006] On the one hand, the present invention provides a silent cotton tire, comprising: a tire made of high-strength rubber material and a wheel body installed relative to the tire, characterized in that the tire is provided with a wheel side that is arranged in a concave-convex shape to increase grip and stability, silent annular cotton is arranged on the opposite sides of the tire and the wheel body, the silent annular cotton is arranged in pairs, and the silent annular cotton is in contact with the annular inner wall of the tire, a fixing seat is fixedly installed on the inner wall of the tire, the fixing seat and the silent annular cotton are arranged correspondingly, and the fixing seat is arranged on the opposite sides of the two silent annular cottons; The fixing seat is arranged in an annular shape, and a side wall of the fixing seat away from the silent annular cotton is in contact with the tire, and an annular groove is provided on the side wall of the fixing seat opposite to the silent annular cotton, and the annular groove is perpendicular to the plane of the fixing seat and forms a concave structure; The fixing seat is provided with a connecting assembly for fixing and connecting the silent annular cotton.

[0007] According to a silent cotton tire provided by the present invention, the connecting assembly includes a plurality of barrier pads fixedly connected to the annular groove, the barrier pads are arranged in a block shape, and one end of the barrier pad extends to the open end of the annular groove, and the other end of the barrier pad extends to the bottom of the annular groove, two adjacent barrier pads form a temporary storage cavity, the temporary storage cavity is arranged in the annular groove, and a plurality of the temporary storage cavities are arranged equidistantly in an annular array, a drip hole is opened on the outer side wall of the fixed seat, the drip hole and the temporary storage cavity are arranged correspondingly, and the drip hole It is cylindrical in shape, and the drip holes are arranged in an annular array on the fixing seat. A rubber tube is sealed and installed in the drip hole. The rubber tube is cylindrical. A plurality of adhesion parts are fixed on the side wall of the silent annular cotton relative to the fixing seat. The adhesion parts correspond to the temporary storage cavity. The end of the adhesion part away from the silent annular cotton and the opposite side of the bottom of the temporary storage cavity form a glue adhesion cavity for facilitating the action of glue. The drip hole is arranged perpendicular to the glue adhesion cavity. The rubber tube is inserted into the drip hole and fits tightly to the wall of the drip hole. The rubber tube is provided with a control component for controlling the flow rate of glue during glue dripping.

[0008] According to a silent cotton tire provided by the present invention, the control member comprises a hexagonal block fixedly connected to the top of the rubber tube, the hexagonal block is provided with a through hole which penetrates the rubber tube, the through hole is provided with a fixing groove, a bottom plate is fixedly connected to the fixing groove, a top plate is provided on the top surface of the bottom plate, a rotating rod is fixedly connected to the top of the top plate, a closing plate is inserted on the top of the rotating rod, and the closing plate is threadedly connected to the through hole, and the hexagonal block and the top plate are threadedly connected with the same fastening bolt; The bottom plate and the top plate are both provided with glue penetration holes, the top plate is rotatably arranged in the fixing groove, and the top of the closing plate is provided with an inserting groove for facilitating the inserting of the rotating rod.

[0009] According to a silent cotton tire provided by the present invention, a connecting column is fixedly connected in the annular groove, and the connecting column is fixedly arranged in the temporary storage cavity, and one end of the connecting column close to the silent annular cotton is fixedly connected to an extrusion plate, and the extrusion plate is arc-shaped, and the extrusion plate is slidably arranged in the temporary storage cavity.

[0010] According to a silent cotton tire provided by the present invention, the same adaptation groove is arranged on the opposite sides of the two adjacent adhesion parts, and the multiple adaptation grooves are arranged in a ring array on the side wall of the silent ring cotton close to the fixed seat, and the adaptation groove and the barrier pad are arranged correspondingly, and the barrier pad is clamped in the adaptation groove and fits with the side wall of the adaptation groove.

[0011] According to a silent cotton tire provided by the present invention, the drip hole and the temporary storage cavity are arranged in a through-type manner, and the drip hole is arranged perpendicular to the temporary storage cavity.

[0012] According to a silent sponge tire provided by the present invention, the fixing seat is a rubber soft seat, and the fixing seat is fixedly bonded to the tire by glue.

[0013] According to a silent cotton tire provided by the present invention, a apex rubber is arranged inside the tire for improving the elastic strength of the sidewall and the wheel side at the same time, the apex rubber forms a continuous annular structure, a wire ring and a sub-mouth are sequentially arranged inside the tire, the apex rubber is arranged between the sidewall of the tire and the edge of the rim, and the apex rubber extends to below the sub-mouth and around the wire ring.

[0014] According to a silent cotton tire provided by the present invention, a double-layer integrated structure is opened in the tire, and the double-layer integrated structure is arranged as two inner and outer layers which are independent of each other but closely connected, the wire ring is arranged in the inner layer, and the apex rubber is arranged in the outer layer.

[0015] According to a silent cotton tire provided by the present invention, the outer side wall of the tire adopts a semi-steel radial structure that reduces rolling resistance, part of the semi-steel radial is arranged in an inclined manner at the shoulder of the tire, and the other part of the semi-steel radial is arranged in an annular groove at the center of the tire tread.

[0016] The silent cotton tire provided by the present invention has silent annular cotton and a connecting assembly. The user only needs to do simple operations. After pulling out the rubber tube, the user can inject strong glue into the glue adhesion cavity through the drip hole. The glue can ensure that the silent annular cotton is firmly fixed relative to the fixing seat, so that the run-flat function is played during the driving process of the tire. Even in an emergency situation where the tire pressure suddenly loses a lot, the tire can still be ensured to continue to travel a long distance, ensuring driving safety. At the same time, the design of the silent annular cotton not only takes into account comfort, but also effectively reduces noise during driving, providing customers with a quieter and more comfortable driving environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a silent sponge tire provided by an embodiment of the present invention; Figure 2 Schematic diagram of a silent annular cotton in a silent cotton tire provided by an embodiment of the present invention; Figure 3 It is a partial schematic diagram of a tire in a silent sponge tire provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of an annular groove in a silent sponge tire provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of an adhesion portion and an adaption groove in a silent sponge tire provided by an embodiment of the present invention; Figure 6 It is a schematic diagram of a rubber tube and a hexagonal block in a silent sponge tire provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of the internal structure of a hexagonal block in a silent sponge tire provided by an embodiment of the present invention; Figure 8 It is a schematic diagram of a connecting column in a silent sponge tire provided in an embodiment of the present invention.

[0019] Reference numerals: 1. Tire; 2. Wheel body; 3. Wheel side; 4. Silent annular cotton; 5. Fixed seat; 6. Barrier pad; 7. Temporary storage cavity; 8. Drip hole; 9. Rubber tube; 10. Adhesion part; 11. Adapter groove; 12. Hexagonal block; 13. Through port; 14. Chassis; 15. Top plate; 16. Turn rod; 17. Closing plate; 18. Plug groove; 19. Fastening bolt; 20. Connecting column; 21. Extrusion plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Combine the following Figure 1-Figure 8 Description of the invention Figure 1 It is a schematic diagram of the overall structure of a silent sponge tire provided by an embodiment of the present invention.

[0022] like Figure 1 As shown, a silent cotton tire provided by an embodiment of the present invention, the execution body can be a silent ring cotton 4, and the method mainly includes the following steps: The tire 1 and the wheel body 2 mounted relative to the tire 1 are made of high-strength rubber material. The tire 1 is provided with a wheel side 3 in a concave-convex shape to increase grip and stability. The tire 1 is made of high-strength rubber material, which ensures that the tire 1 can maintain good durability and safety under various complex road conditions, and can not only withstand high load pressure and resist wear and tear, but also extend the service life of the tire 1. The design of the wheel side 3 is particularly suitable for slippery roads or situations where rapid acceleration and deceleration are required.

[0023] The tire 1 and the wheel body 2 are provided with silent annular cotton 4 on opposite sides. The silent annular cotton 4 can significantly reduce the noise generated during the driving of the vehicle, creating a quieter and more comfortable driving environment. The silent annular cotton 4 is provided in pairs, and the silent annular cotton 4 fits the inner annular wall of the tire 1. A fixing seat 5 is fixedly installed on the inner wall of the tire 1. The fixing seat 5 and the silent annular cotton 4 are provided correspondingly, and the fixing seat 5 is provided on the opposite sides of the two silent annular cottons 4; the fixing seat 5 itself is made of soft but tough rubber material, which ensures sufficient support strength without damaging the tire 1 body.

[0024] The fixing seat 5 is provided with a connecting component for fixing and connecting the silent annular cotton 4 .

[0025] The fixing seat 5 is arranged in an annular shape, and a side wall of the fixing seat 5 away from the silent annular cotton 4 fits the tire 1. An annular groove is opened on the side wall of the fixing seat 5 relative to the silent annular cotton 4, and the annular groove is perpendicular to the plane of the fixing seat 5 and forms a concave structure.

[0026] The connecting component includes a plurality of barrier pads 6 fixedly connected in the annular groove. The barrier pads 6 are arranged in a block shape, and one end of the barrier pad 6 extends to the open end of the annular groove, and the other end of the barrier pad 6 extends to the bottom of the annular groove. Two adjacent barrier pads 6 form a temporary storage cavity 7. Each separately arranged temporary storage cavity 7 is convenient for the user to perform glue dripping and fixing according to the partially loose silent annular cotton 4, thereby avoiding the problem of waste and increased cost caused by excessive glue dripping, and at the same time also ensuring the accuracy of glue dripping to a certain extent.

[0027] The temporary storage cavity 7 is arranged in the annular groove, and a plurality of temporary storage cavities 7 are arranged in an annular array at equal distances. This arrangement ensures that each temporary storage cavity 7 can be evenly distributed around the entire tire 1, thereby ensuring the consistency and uniformity of the adhesive distribution between the silent annular cotton 4 and the tire 1. A drip hole 8 is provided on the outer wall of the fixing seat 5. The drip hole 8 and the temporary storage cavity 7 are arranged correspondingly. The drip hole 8 is cylindrical in shape, and the drip hole 8 is arranged in an annular array on the fixing seat 5. A rubber tube 9 is sealed and installed in the drip hole 8. This arrangement is convenient for the staff to inject an appropriate amount of glue into the interior, and the setting of the rubber tube 9 can provide a good sealing effect when not in use to prevent external impurities from entering. The rubber tube 9 is cylindrical. Pull out the rubber tube 9, and drip strong glue into the temporary storage cavity 7 through the drip hole 8. Since the drip hole 8 is arranged perpendicular to the temporary storage cavity 7, it can ensure that the glue flows in smoothly.

[0028] The rubber tube (9) is provided with a control component for controlling the flow rate of glue during glue dripping.

[0029] The control part includes a hexagonal block 12 fixedly connected to the top of the rubber tube 9, a through hole 13 penetrating the rubber tube 9 is provided on the hexagonal block 12, a fixing groove is provided in the through hole 13, a bottom plate 14 is fixedly connected in the fixing groove, a top plate 15 is provided on the top surface of the bottom plate 14, a rotating rod 16 is fixedly connected to the top of the top plate 15, a closing plate 17 is inserted on the top of the rotating rod 16, and the setting of the closing plate 15 prevents dust from falling into the rubber tube 9 through the through hole 13. The closing plate 17 is threadedly connected to the through hole 13, and the hexagonal block 12 and the top plate 15 are threadedly connected with the same fastening bolt 19; the fastening bolt 19 is provided to fix the top plate 15, and after the top plate 15 and the glue penetration hole on the bottom plate 14 are misaligned, the top plate 15 is relatively fixed to prevent the glue from flowing out in the opposite direction and affecting the stability of the glue adhesion.

[0030] The bottom plate 14 and the top plate 15 are both provided with glue holes. By rotating the top plate 15, the positions of the glue holes on the top plate 15 and the bottom plate 14 are adjusted, so as to flexibly adjust the size of the glue holes through which the glue passes, thereby realizing the control of the flow rate and preventing the glue from overflowing due to excessive inflow, resulting in waste. The top plate 15 is rotatably arranged in the fixed groove, and the top of the closing plate 17 is provided with a plug-in groove 18 for facilitating the plugging of the rotating rod 16.

[0031] A connecting column 20 is fixedly connected in the annular groove, and the connecting column 20 is fixedly arranged in the temporary storage chamber 7. One end of the connecting column 20 close to the silent annular cotton 4 is fixedly connected to a squeezing plate 21, and the squeezing plate 21 is arc-shaped, and the squeezing plate 21 is slidably arranged in the temporary storage chamber 7. After the glue dripping is completed, the staff squeezes the fixing seat 5, and driven by the connecting column 20, the connecting column 20 pushes the squeezing plate 21 to slide in the temporary storage chamber 7, and the squeezing plate 21 pushes the glue inside the temporary storage chamber 7 to evenly adhere to the adhesion part 10, ensuring the overall stability of the adhesion, and when looseness occurs later, the staff pushes the squeezing plate 21 to make full use of the viscosity of the glue.

[0032] A plurality of adhesive parts 10 are fixed on the side wall of the silent ring cotton 4 relative to the fixing seat 5, and the adhesive parts 10 correspond to the temporary storage chamber 7. The end of the adhesive part 10 away from the silent ring cotton 4 and the opposite side of the bottom of the temporary storage chamber 7 form a glue adhesion chamber for the glue to act on, and the drip hole 8 is arranged perpendicular to the glue adhesion chamber. This design allows that when a new silent ring cotton 4 needs to be replaced, the whole process can be completed by gently tearing off the old silent ring cotton 4 and then refilling with fresh glue to achieve the fixed installation of the new silent ring cotton 4.

[0033] The same adapting groove 11 is arranged on the opposite sides of two adjacent adhesion parts 10. Multiple adapting grooves 11 are arranged in an annular array on the side wall of the silent ring cotton 4 close to the fixing seat 5. The adapting groove 11 and the blocking pad 6 are arranged correspondingly. Each adapting groove 11 is equipped with a protruding structure (i.e., the blocking pad 6) that matches it. When the two are correctly aligned, seamless docking can be easily achieved. This design not only greatly simplifies the assembly process, but also effectively avoids the common looseness or misalignment problems in traditional methods. The blocking pad 6 is snapped into the adapting groove 11 and fits the side wall of the adapting groove 11.

[0034] The dripping hole 8 and the temporary storage chamber 7 are arranged in a through manner, and the dripping hole 8 is arranged vertically to the temporary storage chamber 7 .

[0035] The fixing seat 5 is a rubber soft seat, and the fixing seat 5 is fixedly bonded to the tire 1 by glue.

[0036] The tire 1 is provided with a apex for improving the elastic strength of the sidewall and the wheel side 3. The apex forms a continuous annular structure. The tire 1 is provided with a wire ring and a bead in sequence. The apex is provided between the sidewall of the tire 1 and the edge of the rim, and the apex extends below the bead and around the wire ring. The apex is a circular ring structure and runs through the entire tire body. It can not only increase the tear resistance of the tire 1, but also disperse the stress concentration points generated during driving to a certain extent, and reduce the probability of early aging caused by local overheating.

[0037] The tire 1 has a double-layer integrated structure, which is arranged as two inner and outer layers that are independent of each other but closely connected, with the wire ring arranged in the inner layer and the apex rubber arranged in the outer layer, so that the two form a solid and flexible overall frame.

[0038] The outer sidewall of the tire 1 adopts a semi-steel radial structure to reduce rolling resistance. Some semi-steel radials are arranged obliquely at the shoulder of the tire 1, and the other semi-steel radials are arranged in the center of the tire 1 tread in an annular groove.

[0039] The rubber tube 9 is inserted into the drip hole 8 and fits tightly against the wall of the drip hole 8 .

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A silent sponge tire, comprising a tire (1) made of a high-strength rubber material and a wheel body (2) mounted relative to the tire (1), characterized in that: The tire (1) is provided with a wheel side (3) which is arranged in a concave-convex shape to increase grip and stability; silent annular cotton (4) is arranged on opposite sides of the tire (1) and the wheel body (2); the silent annular cotton (4) is arranged in pairs, and the silent annular cotton (4) is in contact with the annular inner wall of the tire (1); a fixing seat (5) is fixedly mounted on the inner wall of the tire (1); the fixing seat (5) and the silent annular cotton (4) are arranged correspondingly, and the fixing seat (5) is arranged on the opposite sides of the two silent annular cottons (4); The fixing seat (5) is arranged in an annular shape, and a side wall of the fixing seat (5) away from the silent annular cotton (4) is in contact with the tire (1), and an annular groove is provided on the side wall of the fixing seat (5) opposite to the silent annular cotton (4), and the annular groove is perpendicular to the plane of the fixing seat (5) and forms a concave structure; The fixing seat (5) is provided with a connecting component for fixing the silent annular cotton (4).

2. A silent sponge tire according to claim 1, characterized in that: The connection assembly comprises a plurality of barrier pads (6) fixedly connected to the annular groove, the barrier pads (6) being arranged in a block shape, and one end of the barrier pad (6) extending to the open end of the annular groove, and the other end of the barrier pad (6) extending to the bottom of the annular groove, two adjacent barrier pads (6) forming a temporary storage cavity (7), the temporary storage cavity (7) being arranged in the annular groove, and the plurality of temporary storage cavities (7) being arranged at equal distances in an annular array, and a drip hole (8) being opened on the outer side wall of the fixing seat (5), the drip hole (8) being arranged corresponding to the temporary storage cavity (7), the drip hole (8) being cylindrical in shape, and the drip hole (8) The rubber tube (9) is arranged in an annular array on the fixing seat (5), and the drip hole (8) is sealed with a rubber tube (9), and the rubber tube (9) is cylindrical. A plurality of adhesive portions (10) are fixed on the side wall of the silent annular cotton (4) relative to the fixing seat (5), and the adhesive portions (10) correspond to the temporary storage cavity (7). The end of the adhesive portion (10) away from the silent annular cotton (4) and the opposite side of the bottom of the temporary storage cavity (7) form a glue adhesion cavity for facilitating the action of glue, and the drip hole (8) is arranged perpendicular to the glue adhesion cavity. The rubber tube (9) is inserted into the drip hole (8) and is tightly fitted with the hole wall of the drip hole (8); The rubber tube (9) is provided with a control component for controlling the flow rate of glue during glue dripping.

3. A silent sponge tire according to claim 2, characterized in that: The control member comprises a hexagonal block (12) fixedly connected to the top of the rubber tube (9); a through hole (13) penetrating the rubber tube (9) is formed on the hexagonal block (12); a fixing groove is formed in the through hole (13); a bottom plate (14) is fixedly connected in the fixing groove; a top plate (15) is provided on the top surface of the bottom plate (14); a rotating rod (16) is fixedly connected to the top of the top plate (15); a closing plate (17) is inserted into the top of the rotating rod (16); the closing plate (17) and the through hole (13) are threadedly connected; the hexagonal block (12) and the top plate (15) are threadedly connected by the same fastening bolt (19); The bottom plate (14) and the top plate (15) are both provided with glue penetration holes. The top plate (15) is rotatably arranged in the fixing groove. The top of the closing plate (17) is provided with an insertion groove (18) for facilitating the insertion of the rotating rod (16).

4. A silent sponge tire according to claim 2, characterized in that: A connecting column (20) is fixedly connected in the annular groove, and the connecting column (20) is fixedly arranged in the temporary storage cavity (7); one end of the connecting column (20) close to the silent annular cotton (4) is fixedly connected to a squeezing plate (21), and the squeezing plate (21) is arc-shaped, and the squeezing plate (21) is slidably arranged in the temporary storage cavity (7).

5. The silent sponge tire according to claim 2, characterized in that: The two adjacent adhesion portions (10) are provided with a same adapting groove (11) on opposite sides thereof. The plurality of adapting grooves (11) are arranged in an annular array on the side wall of the silent annular cotton (4) close to the fixing seat (5). The adapting groove (11) and the blocking pad (6) are arranged correspondingly. The blocking pad (6) and the adapting groove (11) are snap-fitted and fit with the side wall of the adapting groove (11).

6. The silent sponge tire according to claim 2, characterized in that: The drip hole (8) and the temporary storage cavity (7) are arranged in a through-type manner, and the drip hole (8) is arranged perpendicular to the temporary storage cavity (7).

7. The silent sponge tire according to claim 1, characterized in that: The fixing seat (5) is a rubber soft seat, and the fixing seat (5) is fixedly bonded to the tire (1) by glue.

8. The silent sponge tire according to claim 1, characterized in that: The tire (1) is provided with a apex rubber for improving the elastic strength of the sidewall and the wheel side (3) at the same time, the apex rubber forms a continuous annular structure, a wire ring and a spigot are sequentially provided in the tire (1), the apex rubber is provided between the sidewall of the tire (1) and the edge of the rim, and the apex rubber extends below the spigot and around the wire ring.

9. The silent sponge tire according to claim 8, characterized in that: The tire (1) has a double-layer integrated structure, the double-layer integrated structure is arranged as two inner and outer layers that are independent of each other but closely connected, the wire ring is arranged on the inner layer, and the apex rubber is arranged on the outer layer.

10. The silent sponge tire according to claim 1, characterized in that: The outer side wall of the tire (1) adopts a semi-steel radial structure that reduces rolling resistance, part of the semi-steel radial is arranged in an inclined manner at the shoulder of the tire (1), and another part of the semi-steel radial is arranged in an annular groove at the center of the tread of the tire (1).

Images