A bionic air-free tire

Abstract

The present invention belongs to the field of tire technology. In view of the problems of poor shock absorption performance and high noise in existing airless tires, the present invention provides a bionic airless tire, which includes a tread, a connecting layer, a bionic buffer structure and a mounting body from the outside to the inside, wherein the bionic buffer structure includes a Z-shaped buffer plate imitating the hind limbs of a feline, a honeycomb elastomer, a first outer ring and a first inner ring, and the area between the Z-shaped buffer plate, the first outer ring and the first inner ring is filled with a honeycomb elastomer, and the holes of the honeycomb elastomer gradually increase from small to large from the first inner ring to the first outer ring. Through the Z-shaped buffer structure and the diamond honeycomb structure, the tire can effectively buffer both large vibrations and small vibrations, break the wind noise frequency, reduce the wind noise of the airless tire, and avoid the problem of permanent deformation of the single structure itself due to insufficient strength.

Description

Technical Field

[0001] The invention belongs to the technical field of tires, and in particular relates to a bionic air-free tire. Background Art

[0002] For a long time, pneumatic tires have been the most commonly used tires for vehicles. The superior cushioning performance and low rolling resistance of pneumatic tires have not been surpassed by any other tires so far. However, pneumatic tires require regular tire pressure maintenance, are easily punctured and leaked, and the consequences of tire blowouts are serious. Airless tires, that is, tires that do not need to be inflated, do not rely on air, and only use the tire's own materials and structures to achieve support and cushioning performance, such as solid tires, spring tires, and cushion tires. However, existing airless tires generally have the defects of poor comfort performance, weak shock absorption ability, high noise, and high fuel consumption. Therefore, it is difficult to promote and apply them in the field of civilian tires.

[0003] The Chinese patent application number 201921964609.5 discloses a bionic non-pneumatic tire, including a crown, a bionic spoke support body and a spoke inner ring, and the bionic spoke support body is designed to imitate the structure of a kangaroo's lower limbs. The bionic tire improves the shock absorption characteristics of the non-pneumatic tire to a certain extent, but the shock absorption effect is still far from that of the pneumatic tire, and the noise, rolling resistance and comfort still cannot meet people's needs. Summary of the invention

[0004] In view of the above-mentioned problems of poor shock absorption performance and high noise in existing airless tires, the present invention provides a bionic airless tire. Through the Z-shaped buffer structure and the diamond honeycomb structure, the tire can effectively buffer both large vibrations and small vibrations, break the wind noise frequency, reduce the wind noise of the airless tire, and avoid the problem of permanent deformation of the single structure itself due to insufficient strength.

[0005] The present invention is achieved through the following technical solutions:

[0006] A bionic airless tire comprises, from outside to inside, a tread, a connecting layer, a bionic buffer structure and a mounting body. The surface of the tread that directly contacts the ground is provided with a tire pattern. The tread is tightly connected to the bionic buffer structure through the connecting layer. The tire is fixedly connected to a vehicle through the mounting body. The bionic buffer structure comprises a Z-shaped buffer plate imitating the hind limbs of a feline, a honeycomb elastomer, a first outer ring and a first inner ring. The Z-shaped buffer plate is radially distributed in an annular area between the first outer ring and the first inner ring. The area between the Z-shaped buffer plate, the first outer ring and the first inner ring is filled with a honeycomb elastomer. The holes of the honeycomb elastomer gradually increase from small to large from the first inner ring to the first outer ring. The tread, the connecting layer, the bionic buffer structure and the mounting body are tightly connected to form a whole.

[0007] Furthermore, an adaptive buffer structure is also arranged between the bionic buffer structure and the mounting body, and the adaptive buffer structure is composed of an I-shaped buffer plate, a second outer ring and a second inner ring. The I-shaped buffer plate is radially distributed in the annular area between the second outer ring and the second inner ring. The I-shaped buffer plate is obliquely arranged relative to the second inner ring, and its inclination direction is consistent with the inclination direction of the middle section of the Z-shaped buffer plate.

[0008] Furthermore, the number of the I-shaped buffer plates is the same as the number of the Z-shaped buffer plates.

[0009] Furthermore, the inner angle of the Z-shaped buffer plate close to the first outer ring is 5-120°, preferably 30-70°, and more preferably 50-60°; the inner angle close to the second outer ring is 5-120°, preferably 30-70°, and more preferably 40-50°.

[0010] Furthermore, the Z-shaped buffer plate and the I-shaped buffer plate are both thermoplastic elastomers.

[0011] Furthermore, the honeycomb elastomer is a rhombus-shaped honeycomb elastomer.

[0012] Furthermore, the tread is a nano rubber layer.

[0013] Furthermore, the thickness of the Z-shaped buffer plate is 0.5mm-20mm, preferably 5-15mm, and more preferably 8-12mm; the distance from the inflection point of the Z-shaped buffer plate close to the first outer ring to the first outer ring is 5-110mm, preferably 30-90mm, and more preferably 80mm; the distance from the inflection point of the Z-shaped buffer plate close to the first inner ring to the second outer ring is 5-110mm, preferably 30-80mm, and more preferably 60mm.

[0014] Furthermore, the thickness of the I-shaped buffer plate is 1-30 mm, preferably 5-25 mm, and more preferably 10-15 mm, and the angle of the I-shaped buffer plate relative to the tire circumference is 0-60°, preferably 20-40, and more preferably 25°.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention combines a Z-shaped buffer structure with a honeycomb structure. Firstly, the tire can effectively buffer both large vibrations and small vibrations, thereby improving the handling performance of the tire under conditions such as sharp turns, passing through pits, and driving on uneven roads. Secondly, the structural strength of the Z-shaped buffer structures around the entire circumference is enhanced to avoid permanent deformation of a single structure due to insufficient strength, thereby improving the radial stiffness and circumferential stiffness of the airless tire under high-speed conditions. Thirdly, the wind noise frequency is reduced to reduce the wind noise of the airless tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the bionic air-free tire of Example 1;

[0018] Figure 2 It is a side view of the bionic air-free tire of Example 1;

[0019] Figure 3 AA cross-sectional view of the bionic air-free tire of Example 1;

[0020] Figure 4 This is a schematic diagram of a diamond-shaped honeycomb elastic body of Example 1;

[0021] Figure 5 A three-dimensional diagram of the bionic airless tire of Example 2;

[0022] Figure 6 It is a side view schematic diagram of the bionic air-free tire of Example 2;

[0023] Figure 7 AA cross-sectional view of the bionic airless tire of Example 2;

[0024] Figure 8 This is a partial schematic diagram of the bionic airless tire of Example 2.

[0025] In the above figures: 1. tread; 2. connecting layer; 3. Z-shaped buffer plate; 4. diamond-shaped honeycomb elastomer; 41. hollow area of ​​diamond-shaped honeycomb elastomer; 5. first outer ring; 6. first inner ring; 7. mounting body; 8. I-shaped buffer plate; 81. hollow area between I-shaped buffer plates; 9. second outer ring; 10. second inner ring. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] Example 1

[0028] like Figure 1 As shown, a bionic airless tire includes, from outside to inside, a tread 1, a connecting layer 2, a bionic buffer structure and a mounting body 7, and the above parts are tightly connected to form a whole. The tread 1 is in direct contact with the ground, and a tire pattern is provided on its surface. The tread 1 is preferably a nano rubber layer. The connecting layer 2 is a bonding material, which tightly connects the tread 1 and the bionic buffer structure. The mounting body 7 is a mounting part of the tire, and the bionic tire is fixedly connected to the vehicle through the mounting body 7.

[0029] like Figure 2As shown, the bionic buffer structure is composed of a Z-shaped buffer plate 3 that imitates the hind limbs of a feline, a diamond-shaped honeycomb elastomer 4, a first outer ring 5 and a first inner ring 6. The first outer ring 5 is arranged close to the connecting layer 2, and the first inner ring 6 is arranged close to the mounting body 7. An annular area is formed between the first outer ring 5 and the first inner ring 6, and the Z-shaped buffer plate 3 is radially distributed in the annular area along the first inner ring 6. The area between the Z-shaped buffer plate 3, the first outer ring 5 and the first inner ring 6 is filled with the diamond-shaped honeycomb elastomer 4. Both the Z-shaped buffer plate and the I-shaped buffer plate are thermoplastic elastomers. The honeycomb size diagram of the diamond-shaped honeycomb elastomer 4 is shown in FIG. Figure 4 As shown, the diamond honeycomb elastic body 4 is composed of elastic sheets of different angles and sizes, and the holes of the diamond honeycomb elastic body gradually increase from small to large from the first inner ring 6 to the first outer ring 5, and the density of the corresponding elastic body material gradually decreases from large to small. A more preferred solution is that the size of the diamond honeycomb in the tire radial direction is the same, and the size in the tire circumferential direction gradually increases from the first inner ring 6 to the first outer ring 5.

[0030] The Z-type buffer plate 3 has good buffering performance for large vibrations and tire impacts, and can quickly restore its shape. However, due to the support requirements of the structural strength of the Z-type buffer plate 4 itself, the buffering performance is poor for small vibrations. This defect can be compensated by filling the honeycomb buffer elastic body 4 between the Z-type buffer plates 3. Moreover, the honeycomb elastic body with gradually changing hole sizes can maintain the linear vibration absorption of the airless tire and improve the tire comfort.

[0031] Compared with a single bionic buffer structure, the Z-type bionic buffer structure combined with the honeycomb buffer structure design can also help reduce the wind noise frequency when the airless tire is driving. It can also prevent the vehicle from being drawn into debris and causing safety hazards while driving.

[0032] This tire is particularly suitable for large-size tires of 17 inches and above. Large-size airless tires are generally installed on vehicles with higher weight and performance, with large loads and high speed levels, and need to be equipped with rims.

[0033] Production method:

[0034] The bionic airless tire is produced by importing the three-dimensional parametrically designed tire model into a dedicated 3D printer for printing. It can also be produced by traditional tire equipment and specially designed tire molds. The specific process is divided into tire buffer body molding, tread rubber extrusion, and airless tire bonding molding.

[0035] Example 2

[0036] like Figure 5As shown, a bionic air-free tire includes, from outside to inside, a tread, a connecting layer, a bionic buffer structure, an adaptive buffer structure and a mounting body. Compared with Example 1, the bionic air-free tire is added with an adaptive buffer structure.

[0037] The tread, connecting layer and adaptive buffer structure are similar to those in the first embodiment.

[0038] like Figure 6 As shown, the adaptive buffer structure is composed of an I-shaped buffer plate 8, a second outer ring 9 and a second inner ring 10. The second outer ring 9 is close to the first inner ring 6, and the second inner ring 10 is close to the mounting body 7. An annular area is formed between the second outer ring 9 and the second inner ring 10. The I-shaped buffer plate 8 is radially distributed in the annular area along the second inner ring 10, and the I-shaped buffer plate 8 is obliquely arranged relative to the second inner ring 10, and its inclination direction is consistent with the inclination direction of the middle part of the Z-shaped buffer plate 3.

[0039] Preferably, the number of I-shaped buffer plates 8 is the same as the number of Z-shaped buffer plates 3, and both are preferably made of elastomeric material. The Z-shaped buffer plates 3 correspond to the I-shaped buffer plates 8 one by one to form an M-shaped buffer structure, further improving the buffering performance of the tire.

[0040] Preferably, the inner angle Ra2 of the Z-shaped buffer plate 3 near the first outer ring 5 is 55°; the inner angle Ra3 near the second outer ring 6 is 45°. The thickness D of the Z-shaped buffer plate is 15mm, the distance D1 from the inflection point of the Z-shaped buffer plate near the first outer ring to the first outer ring is 80mm, the distance D2 from the inflection point of the Z-shaped buffer plate near the first inner ring to the second outer ring is 60mm, the thickness W1 of the I-shaped buffer plate is 25mm, and the angle Ra1 of the I-shaped buffer plate relative to the tire circumference is 25°. In order to facilitate the clear display of the above structure, Figure 8 Several complete Z-shaped buffer plates and I-shaped buffer plates were selected, and the diamond honeycomb elastic body and the remaining Z-shaped buffer plates and I-shaped buffer plates were omitted.

[0041] The tire is particularly suitable for small-sized tires with a size of less than 17 inches. Small-sized airless tires have high requirements for comfort. The bionic buffer structure and the adaptive buffer structure can improve the comfort of small-sized airless tires while reducing the production cost.

[0042] The embodiments described above are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A bionic air-free tire, characterized in that: From the outside to the inside, it includes a tread, a connecting layer, a bionic buffer structure and a mounting body in sequence. The surface of the tread that directly contacts the ground is provided with a tire pattern. The tread is tightly connected to the bionic buffer structure through the connecting layer. The tire is fixedly connected to the vehicle through the mounting body. The bionic buffer structure includes a Z-shaped buffer plate that imitates the hind limbs of a feline, a honeycomb elastic body, a first outer ring and a first inner ring. The Z-shaped buffer plate is radially distributed in the annular area between the first outer ring and the first inner ring. The area between the Z-shaped buffer plate, the first outer ring and the first inner ring is filled with a honeycomb elastic body. The holes of the honeycomb elastic body from the first inner ring to the first outer ring gradually increase from small to large. The tread, the connecting layer, the bionic buffer structure and the mounting body are tightly connected to form a whole. An adaptive buffer structure is also arranged between the bionic buffer structure and the mounting body, and the adaptive buffer structure is composed of an I-shaped buffer plate, a second outer ring and a second inner ring. The I-shaped buffer plate is radially distributed in the annular area between the second outer ring and the second inner ring. The I-shaped buffer plate is arranged obliquely relative to the second inner ring, and its inclination direction is consistent with the inclination direction of the middle section of the Z-shaped buffer plate. The inner angle Ra2 of the Z-shaped buffer plate close to the first outer ring is 5-120°, and the inner angle Ra3 close to the second outer ring is 5-120°.

2. The bionic airless tire according to claim 1, characterized in that: The number of the I-shaped buffer plates is the same as the number of the Z-shaped buffer plates.

3. The bionic airless tire according to claim 1, characterized in that: The Z-shaped buffer plate and the I-shaped buffer plate are both thermoplastic elastomers.

4. The bionic airless tire according to claim 1, characterized in that: The honeycomb elastic body is a rhombus honeycomb elastic body.

5. The bionic airless tire according to claim 1, characterized in that: The tread is a nano rubber layer.

6. The bionic airless tire according to claim 1, characterized in that: The thickness of the Z-shaped buffer plate is 0.5mm-20mm, and the distance from the inflection point of the Z-shaped buffer plate close to the first outer ring to the first outer ring is 5-110mm; the distance from the inflection point of the Z-shaped buffer plate close to the first inner ring to the second outer ring is 5-110mm.

7. The bionic airless tire according to claim 1, characterized in that: The thickness of the I-shaped buffer plate is 6-60 mm, and the angle of the I-shaped buffer plate relative to the tire circumference is 0-60°.

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