Low-rolling-resistance tire
By designing a multi-layered structure at the tire sidewall bead, combining low-heat-generating rubber with conventional hard rubber, and optimizing material distribution, the problems of insufficient rolling resistance and durability of tires were solved, achieving reduced rolling resistance and improved durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LINGLONG TIRE CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-15
AI Technical Summary
The existing tire sidewalls are mostly made of a single hard rubber design, which results in insufficient improvement in tire rolling resistance and durability.
It adopts a multi-layer structure design, including a first anti-skid groove, a second anti-skid groove, a base layer, a steel wire ring, an reinforcing layer, an airtight layer, a cord layer, a nylon belt layer, a buffer layer, a steel wire layer, a top rubber layer, and a wear-resistant layer. By matching low-heat-generating rubber with conventional sidewall bead hard rubber, the material distribution is optimized to improve friction and durability.
It reduces rolling resistance by 0.3-0.5 N/KN, accounting for 5-10%, improves durability by 10-20%, and enhances grip and overall tire performance.
Smart Images
Figure CN224240754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tire technology, specifically a low rolling resistance tire. Background Technology
[0002] The hard rubber at the sidewall bead is a key reinforcing material in the tire bead area, scientifically known as "bead filler." Located between the bead wire bundle and the transition area of the sidewall, it is made from a high-hardness rubber compound (such as a blend of natural rubber, butadiene rubber, and high-reinforcing carbon black) through precision extrusion. Its hardness range is typically 70-85 Shore A, and it is integrated with the tire carcass ply and bead wire through a high-temperature vulcanization process to form an integral structure.
[0003] Existing tire sidewall designs are mostly simple hard rubber designs with limited structural innovation, resulting in virtually no contribution to tire rolling resistance and durability, and thus poor tire performance improvement.
[0004] Based on this, a low rolling resistance tire is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content
[0005] The purpose of this invention is to provide a low rolling resistance tire to solve the problem that the tire sidewalls in the prior art are mostly designed with a single hard rubber.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A low rolling resistance tire includes a tire carcass, the outer side of which is provided with a first anti-skid groove and a second anti-skid groove, the tire carcass has a sidewall on both sides, and the inner side of the sidewall has a tire bead.
[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:
[0009] In one alternative: the tire bead includes a base layer, the interior of which is provided with a wire ring and an reinforcing layer.
[0010] In one alternative: the material of the added layer is a low-heat-generating adhesive.
[0011] In one alternative: the tire carcass includes an airtight layer, one side of which is attached to a cord layer, the airtight layer being made of butyl rubber, and the cord layer being made of steel cord.
[0012] In one alternative: a nylon belt layer is attached to one side of the cord layer, and the nylon belt layer is made of polyamide cord coating.
[0013] In one alternative: a buffer layer is attached to one side of the nylon belt layer, and the buffer layer is made of steel cord coated with adhesive.
[0014] In one alternative: a steel wire layer is attached to one side of the buffer layer, and the steel wire layer is made of high-strength copper-plated steel wire.
[0015] In one alternative: a surface adhesive layer is attached to one side of the steel wire layer, and a wear-resistant layer is attached to one side of the surface adhesive layer; the surface adhesive layer is made of SBR, and the wear-resistant layer is made of styrene-butadiene rubber.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This invention improves tire friction by combining the first and second anti-skid grooves, resulting in better tire grip. Through the matching design of low-heat rubber compound and conventional sidewall bead hard rubber, the material distribution design and performance of the bead are optimized, and the rolling resistance is predicted to be reduced by 0.3-0.5 N / KN, accounting for 5-10%, and the durability of the tire bead is improved by 10-20%. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0019] Figure 2 This is a schematic diagram of the tire bead structure of this utility model.
[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the tire body of this utility model.
[0021] Figure reference numerals: 1. Tire carcass; 11. Airtight layer; 12. Cord layer; 13. Nylon belt layer; 14. Buffer layer; 15. Steel wire layer; 16. Top rubber layer; 17. Wear-resistant layer; 2. First anti-skid groove; 3. Second anti-skid groove; 4. Tire sidewall; 5. Tire bead; 51. Base layer; 52. Steel wire ring; 53. Reinforcing layer. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0023] In one embodiment, such as Figures 1-3 As shown, a low rolling resistance tire includes a tire body 1, with a first anti-skid groove 2 and a second anti-skid groove 3 respectively formed on the outer side of the tire body 1, tire sidewalls 4 on both sides of the tire body 1, and tire bead 5 on the inner side of the tire sidewalls 4.
[0024] In this embodiment, the cooperation between the first anti-skid groove 2 and the second anti-skid groove 3 improves the friction of the tire, giving the tire better grip. The material distribution design and performance improvement of the bead position are achieved through the tire bead 5. It is predicted that the rolling resistance can be reduced by 0.3-0.5 N / KN, accounting for 5-10%, and the durability of the tire bead can be improved by 10-20%.
[0025] In one embodiment, such as Figure 1 and Figure 2 As shown, the tire bead 5 includes a base layer 51, inside which a steel wire ring 52 and an reinforcing layer 53 are provided. The reinforcing layer 53 is made of low heat-generating rubber. The steel wire ring 52 is used to maintain the shape of the tire bead 5 and improve the tire's sealing performance. Through the matching design of low heat-generating rubber and conventional sidewall bead hard rubber, the material distribution design and performance improvement of the bead position are achieved. It is predicted that the rolling resistance can be reduced by 0.3-0.5 N / KN, accounting for 5-10%, and the durability performance of the durable bead can be improved by 10-20%.
[0026] In one embodiment, such as Figure 1 and Figure 3 As shown, a cord layer 12 is attached to one side of the airtight layer 11. The airtight layer 11 is made of butyl rubber. The cord layer 12 is made of steel cord. A nylon belt layer 13 is attached to one side of the cord layer 12. The nylon belt layer 13 is made of polyamide cord with adhesive coating. A buffer layer 14 is attached to one side of the nylon belt layer 13. The buffer layer 14 is made of steel cord with adhesive coating. A steel wire layer 15 is attached to one side of the buffer layer 14. The steel wire layer 15 is made of high-strength copper-plated steel wire. A faceplate layer 16 is attached to one side of the steel wire layer 15. A wear-resistant layer 17 is attached to one side of the faceplate layer 16. The faceplate layer 16 is made of SBR. The wear-resistant layer 17 is made of styrene-butadiene rubber. 1. As a sealing barrier inside the tire wall, it prevents compressed gas leakage and maintains stable tire pressure. Butyl rubber has extremely low gas permeability and excellent ozone aging resistance, and can withstand temperature fluctuations from -40℃ to 120℃. The cord layer 12 forms the tire skeleton structure, bearing the circumferential stress generated by vehicle load and internal air pressure, and dispersing road impact energy. The nylon belt layer 13 surrounds the crown area, limiting the radial displacement of the steel belt layer when rotating at high speed and suppressing tread deformation caused by centrifugal force. The steel wire layer 15 tightly meshes with the rim to ensure tire fixation and airtightness. The tread layer 16 achieves water drainage, grip and noise reduction functions through the tread pattern, and transmits driving force and braking force. The wear-resistant layer 17, as the outermost layer of the tread, directly resists road wear and punctures from sharp objects.
[0027] The above embodiments disclose a low rolling resistance tire, wherein the steel wire ring 52 is used to maintain the shape of the tire bead 5 and improve the tire's sealing performance. Through the matching design of low heat-generating rubber and conventional hard rubber for the sidewall bead, the material distribution design and performance improvement at the bead position are optimized. It is predicted that the rolling resistance can be reduced by 0.3-0.5 N / KN, accounting for 5-10%, and the durability of the durable bead is improved by 10-20%. The airtight layer 11 acts as a sealing barrier for the inner wall of the tire, preventing compressed gas leakage and maintaining stable tire pressure. Butyl rubber has extremely low gas permeability and excellent ozone aging resistance, and can withstand temperature fluctuations from -40℃ to 120℃. The cord... Layer 12 forms the tire skeleton structure, bearing the circumferential stress generated by vehicle load and internal air pressure, and dispersing the impact energy of the road surface. The nylon belt layer 13 surrounds the crown area, limiting the radial displacement of the steel belt layer when rotating at high speed and suppressing the tread deformation caused by centrifugal force. The steel wire layer 15 tightly meshes with the rim to ensure tire fixation and air tightness. The tread rubber layer 16 realizes the functions of water drainage, grip and noise reduction through the tread pattern, and transmits driving force and braking force. The wear-resistant layer 17, as the outermost layer of the tread, directly resists road wear and punctures from sharp objects. The cooperation of the first anti-skid groove 2 and the second anti-skid groove 3 improves the tire's friction, giving the tire better grip.
[0028] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A low rolling resistance tire, comprising a tire carcass (1), characterized in that, The tire body (1) has a first anti-skid groove (2) and a second anti-skid groove (3) on its outer side. The tire body (1) has a tire sidewall (4) on both sides. The tire sidewall (4) has a tire bead (5) on its inner side.
2. A low rolling resistance tire according to claim 1, characterized in that, The tire bead (5) includes a base layer (51), and the interior of the base layer (51) is provided with a wire ring (52) and an reinforcing layer (53).
3. A low rolling resistance tire according to claim 2, characterized in that, The material of the added layer (53) is a low heat-generating adhesive.
4. A low rolling resistance tire according to claim 1, characterized in that, The tire carcass (1) includes an airtight layer (11), and a cord layer (12) is attached to one side of the airtight layer (11). The airtight layer (11) is made of butyl rubber, and the cord layer (12) is made of steel cord.
5. A low rolling resistance tire according to claim 4, characterized in that, A nylon belt layer (13) is attached to one side of the cord layer (12), and the nylon belt layer (13) is made of polyamide cord coating.
6. A low rolling resistance tire according to claim 5, characterized in that, A buffer layer (14) is attached to one side of the nylon belt layer (13), and the buffer layer (14) is made of steel wire cord coated with adhesive.
7. A low rolling resistance tire according to claim 6, characterized in that, A steel wire layer (15) is attached to one side of the buffer layer (14), and the steel wire layer (15) is made of high-strength copper-plated steel wire.
8. A low rolling resistance tire according to claim 7, characterized in that, A surface adhesive layer (16) is attached to one side of the steel wire layer (15), and a wear-resistant layer (17) is attached to one side of the surface adhesive layer (16). The surface adhesive layer (16) is made of SBR, and the wear-resistant layer (17) is made of styrene-butadiene rubber.