CN212124750U - A flexible spoke type non-pneumatic elastic tire - Google Patents

Abstract

The utility model discloses a flexible spoke type non-pneumatic elastic tire, which relates to the field of rubber tires. It includes: a tread, an elastic support body, and an inner pressure-bearing ring; the tread, the elastic support body and the inner pressure-bearing ring are sequentially arranged from outside to inside in the radial direction of the tire; the elastic support body includes nested arches shape structure, linear structure and circular structure, as well as negative Poisson’s ratio inward concave curved-edge triangular structural units in proportion to the size and the same structure; the nested arched structure includes long-distance arched structure, short-distance arched structure, small arched structure The short-distance arch structure imitates the design of the arch bridge structure; the two adjacent long-distance arch structures and the tread, the linear structure and the top of the long-distance arch structure are formed with negative Poisson's ratio characteristics The inner concave curved triangle structure makes the tire have good impact resistance and noise reduction performance; the elastic support body and inner pressure ring are made of high-modulus polyurethane material, which has high hardness, fatigue resistance, cutting resistance and environmental protection performance. .

Description

A flexible spoke type non-pneumatic elastic tire

technical field

The utility model relates to the field of tires, in particular to a flexible spoke type non-pneumatic elastic tire.

Background technique

The inflatable structure of tires has many hidden dangers in terms of safety, and tire damage or puncture occurs from time to time. In order to solve the hidden safety hazards of pneumatic tires, researchers focus on the research and development of safety tires. According to the classification of technical principles, tire safety technology can be divided into run-flat technology and non-pneumatic technology.

The run-flat tires are similar in appearance to ordinary tires, the difference is that the run-flat tires do not have an inner tube, and the air is directly pressed into the outer tire. Self-adhesive layer to prevent flat tires. However, the original inflation structure of the tire is still retained, and there is still the phenomenon of tire blowout due to excessive wear. Moreover, when the weather is hot, the self-adhesive layer on the tire may soften and move downward, thereby destroying the balance of the wheel and improving the safety performance. limited.

The existing non-pneumatic tires mainly have a spoke-like type, a honeycomb type and an oblique radial type. Generally, a new type of non-pneumatic structure is used to replace the compressed air in the tire cavity, which gets rid of the tire inflation structure and can significantly improve the overall safety performance of the tire. Non-pneumatic technology has become a development trend of tire safety technology. However, the design and material selection of the existing non-pneumatic tire structure are relatively simple, and there are defects in tire strength, impact resistance, thermal deformation degree, and bearing capacity.

Utility model content

In order to solve the above problems, the utility model provides a flexible spoke type non-pneumatic elastic tire, which solves the problem of the pneumatic tire blowing out, and also solves the shortcomings of the existing non-pneumatic tires with low bearing capacity, low strength and poor vibration absorption, Has good practical value.

In order to achieve the above object, the utility model adopts the following technical solutions:

A flexible spoke type non-pneumatic elastic tire, characterized in that it comprises: a tread (1), an elastic support body (2), an inner pressure bearing ring (9); the tread (1), an elastic support body (2) ) and the inner bearing ring (9) are arranged in turn from outside to inside in the radial direction of the tire; the elastic support body (2) includes a nested arch structure (3), a linear structure (7) and a circular structure ( 8) and negative Poisson’s ratio concave curved-sided triangular structural units (10) and (11) that are proportional in size and have the same structure; the nested arched structure (3) includes a long-distance arched structure (4), a short-distance arched structure The arched structure (5), the small arched structure (6); the short-distance arched structure (5) is designed to imitate the arch bridge structure; the distance between the two adjacent long-distance arched structures (4) and the tread (1) is Between the space, the linear structure (7) and the top of the long-distance arched structure (4), concave curved-edge triangular structures (10), (11) with negative Poisson's ratio characteristics are formed.

Preferably, the tread (1) is made of thermoplastic elastomer material, and its structure is consistent with the pattern and ordinary tires.

Preferably, the inner pressure-bearing ring (9) is made of high-modulus polyurethane material, the upper surface is connected with the elastic support body (2), and the lower surface is in interference fit with the wheel rim.

Preferably, the nested arched structure (3) is made of high-modulus polyurethane material, and each nested arched structure is structurally used as a structural unit, connected left and right, and arranged in a ring around the inner pressure-bearing ring (9), The interval angle is 30°, and the center of the array is the axis of the flexible spoke type non-pneumatic tire.

Preferably, a circular structure (8) is designed at the intersection of the two adjacent nested arched structures (3), and the circular structure (8) is located above the short-distance arched structure (5) and surrounds the short-distance arched structure (5). The inner pressure-bearing rings (9) are arranged annularly with an interval angle of 30°, and the center of the array is the axis of the flexible spoke type non-pneumatic tire.

Preferably, each linear structure (7) is located in the center of the nested arched structure (3), and the long-distance arched structure (4) and the short-distance arched structures (5) at the left and right ends are connected by a polyurethane adhesive. ), the linear structure (7) adopts high-modulus polyurethane material to support the tire.

Preferably, between the two adjacent nested arched structures (3) and the tread (1), the linear structure (7) and the top of the long-distance arched structure (4) respectively form an inner surface with negative Poisson's ratio. The concave curved triangular structures (10) and (11) have more stable energy absorption and greater compression under the action of impact load, and show stronger energy absorption capacity with the increase of impact speed.

Preferably, the short-distance arch structure (5) is designed like an arch bridge structure and has a force-releasing effect.

Preferably, between the tread (1) and the elastic support body (2), between the elastic support body (2) and the upper surface of the inner bearing ring (9), the long-distance arched structure (4) ) and the linear structure (7) are connected together by a polyurethane adhesive.

Preferably, each structure in the elastic support body (2) is a smooth transition.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) Compared with the existing non-pneumatic tires, the present utility model designs the non-pneumatic tires as non-pneumatic tires with different support structures, uses an elastic support body to replace the solid structure and the way of inflating the inner tube, does not require inflation and maintenance, and can Greatly avoid the safety hazards of pneumatic tires.

(2) Design the tire into an arch, negative Poisson's ratio, concave curved triangle, and circle nesting with each other, so that the tire can meet more working conditions, ensure a large enough deformation degree of the tire, and obtain Greater adhesion and vibration absorption capacity; at the same time, the short-distance arch structure is designed like an arch bridge structure, which can better absorb vibration, disperse pressure to the outside, and release force; the negative Poisson's ratio of double-layer arrangement is concave The curved triangular structure increases the impact resistance of the tire. The triangular structure makes the tire have the characteristics of stability and pressure resistance, while the negative Poisson's ratio characteristic makes the energy absorption more stable and the compression amount is larger under the impact load. With the increase of impact speed, it shows stronger energy absorption capacity;

(3) The material of the tire is designed to be a combination of various materials with different properties. Both the inner bearing ring and the elastic support body are made of high-modulus polyurethane material. The linear structure contained in the elastic support body has a good supporting effect, increasing the The structural strength of the elastic support body reduces the damage of the support body as much as possible, thereby increasing the safety and reliability of the tire. The tread is made of thermoplastic elastomer material, which makes it have high heat resistance and wear resistance, solves the problems of heat generation and impact resistance of the tread, and at the same time, the structure design is more compact, which increases the bearing capacity of the tire. The load capacity and impact resistance avoid the defects that are prone to stress concentration and increase the life of the tire.

Description of drawings

1 is a schematic diagram of a flexible spoke type non-pneumatic elastic tire;

Figure 2 is a front view of a flexible spoke type non-pneumatic elastic tire;

Figure 3 is a schematic structural diagram of an elastic support body;

Fig. 4 is a schematic diagram of a triangle with negative Poisson's ratio concave curved sides between two adjacent nested arch structures and the tread; Fig. 5 is a schematic diagram of an arch bridge structure.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation examples. The following examples are only used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

The utility model proposes a flexible spoke type non-pneumatic elastic tire, the tire model is 235/60R16, the technical parameters of the flexible spoke type non-pneumatic elastic tire are: section width: 235mm, aspect ratio: 60%, load index: 85.

As shown in FIG. 1 , the surface of the tread (1) has the same common pattern structure as that of common automobile tires, and the tread (1) is made of thermoplastic elastomer material to ensure that the tire has good heat resistance and wear resistance.

As shown in the front view of the flexible spoke type non-pneumatic elastic tire as shown in Figure 2, the three structural units of the long-distance arched structure (4), the short-distance arched structure (5) and the small arched structure (6) are in the form of nesting Arrangement is carried out, and the annular arrangement of each group of nested arched structural units is that each structural unit with an angle of 30° takes the axis of the flexible-spoke type non-pneumatic elastic tire as the center of the circle, and there are twelve annular arrays, At the same time, the combined use of the nesting combination can better absorb vibration and disperse pressure to the outside.

As shown in FIG. 2 , the short-distance arch structure (5) is in contact with the wheel rim, and according to each structural unit with an angle of 30°, with the rim axis as the center of the circle, there are twelve annular arrays; The upper ends of the arched structural units (5) have a circular structure (8), and the short-distance arched structures (5) are designed to imitate the arch bridge structure in which small arched structures (6) are nested, and the small arched structures ( 6) In contact with the inner bearing ring (9), according to each structural unit with an angle of 30°, with the rim axis as the center of the circle, there are twelve annular arrays.

As shown in Figure 2, the top of the long-distance arched structure (4) is in contact with the tread (1), and the bottom ends of the long-distance arched structure (4) are respectively tangent to the left and right short-distance arched structures (5). The left tangent line and the right tangent line, the left and right tangent lines respectively intersect with the short-distance arch structures (5) at the left and right ends and extend to the upper surface of the inner pressure bearing ring (9).

As shown in Fig. 3, each long-distance arched structure (4) has a set of linear structures (7), and each linear structure (7) is respectively connected with two left and right short-distance arched structures (5) and a long-distance arched structure (5). The arched structure (4) is connected by a polyurethane adhesive; the linear structure (7) is made of high-modulus polyurethane material, which has a better supporting effect, increases the structural strength of the elastic support body, and avoids deformation of the support body.

As shown in Fig. 3, each linear structure (7) and the top of each long-distance arched structure (4) enclose a small concave curved-sided triangle (11) with negative Poisson's ratio. At the same time, every two adjacent long-distance arch structures (4) and the tread (1) will form a large negative Poisson's ratio inwardly concave curved triangle (10), which ensures that the tire is deformed enough to obtain a greater degree of deformation. adhesion and vibration absorption.

As shown in Fig. 4, the schematic diagram of the negative Poisson's ratio inwardly concave curved triangular structure (10) between two adjacent nested arch structures (3) and the tread (1), the length of the L1 arc is 10.99cm, and the size of θ1 is 30 °, the size of θ2 is 30°. For the negative Poisson's ratio concave triangular structural units (10) and (11) with the same shape and structure, the ratio of their corresponding arc lengths is 0.5. At the same time, it has the characteristics of stability and pressure resistance of the triangular structure, as well as the impact resistance and noise reduction with negative Poisson's ratio, which increases the safety and reliability of the tire.

As shown in the schematic diagram of the arch bridge structure as shown in FIG. 5 , the short-distance arch structure (5) is designed like an arch bridge structure and has a good release force.

It should be understood that the above-mentioned embodiments are the preferred embodiments of the present invention, but the present invention is not limited to this embodiment, and those skilled in the art can make Any obvious improvement, replacement or modification belongs to the protection scope of the present invention.

Claims (10)

1. A flexible spoke type non-pneumatic elastic tire, relating to the field of rubber tires; it comprises: a tread (1), an elastic support body (2), an inner pressure bearing ring (9); it is characterized in that: the tread (1) 1), the elastic support body (2) and the inner pressure bearing ring (9) are arranged in turn from the outside to the inside in the radial direction of the tire; the elastic support body (2) includes a nested arch structure (3), a linear structure (7) a circular structure (8) and a negative Poisson’s ratio concave curved-sided triangular structure (10, 11) in proportion to the size and the same structure; the nested arched structure (3) includes a long-distance arched structure ( 4), a short-distance arch structure (5), a small arch structure (6); the short-distance arch structure (5) is designed to imitate an arch bridge structure; the two adjacent long-distance arch structures (4) and the tire Between the surfaces (1), between the linear structure (7) and the top of the long-distance arched structure (4), concave curved-sided triangular structures (10, 11) with negative Poisson's ratio properties are formed; the elastic support body (2) The inner pressure-bearing ring (9) is made of high-modulus polyurethane material. 2 . The flexible-spoke type non-pneumatic elastic tire according to claim 1 , wherein the tread ( 1 ) is made of thermoplastic elastomer material. 3 . 3. The flexible-spoke type non-pneumatic elastic tire according to claim 1, characterized in that the inner pressure-bearing ring (9) is made of high-modulus polyurethane material, and the upper surface is connected with the elastic support body (2), The lower surface is an interference fit with the rim. 4. The flexible-spoke type non-pneumatic elastic tire according to claim 1, characterized in that the nested arch structure (3) adopts a high-modulus polyurethane material, and each nested arch structure ( 3) As a structural unit, connected left and right and arranged annularly around the inner pressure bearing ring (9), the interval angle is 30°, and the center of the array is the axis of the flexible spoke type non-pneumatic tire. 5. The flexible-spoke type non-pneumatic elastic tire according to claim 1, characterized in that a circular structure (8) is designed at the intersection of the two adjacent nested arch structures (3). The shaped structures (8) are located above the short-distance arched structures (5), and are arranged annularly around the inner pressure bearing ring (9) with an interval angle of 30°, and the center of the array is the axis of the flexible-spoke non-pneumatic tire. 6. The flexible-spoke type non-pneumatic elastic tire according to claim 1, characterized in that, each linear structure (7) is located in the center of the nested arched structure (3), and is connected by a polyurethane adhesive for long distances In the arched structure (4) and the short-distance arched structures (5) at the left and right ends thereof, the linear structure (7) adopts a high-modulus polyurethane material to support the tire. 7. The flexible spoke type non-pneumatic elastic tire according to claim 1, characterized in that, between the two adjacent nested arch structures (3) and the tread (1), the linear structure (7) and the Concave curved-sided triangular structures (10, 11) with negative Poisson's ratio are respectively formed between the tops of the long-distance arched structures (4). 8 . The flexible-spoke type non-pneumatic elastic tire according to claim 1 , wherein the short-distance arch structure ( 5 ) is designed like an arch bridge structure and has a force-releasing effect. 9 . 9. The flexible spoke type non-pneumatic elastic tire according to claim 1, characterized in that the tread (1) and the elastic support body (2), the elastic support body (2) and the inner pressure bearing ring (9) ) upper surface, the long-distance arched structure (4) and the linear structure (7) are all connected together by a polyurethane adhesive. 10. The flexible-spoke type non-pneumatic elastic tire according to claim 1, characterized in that there is a smooth transition between each structure in the elastic support body (2).

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