CN210149089U

CN210149089U - Non-pneumatic tire

Info

Publication number: CN210149089U
Application number: CN201920979959.2U
Authority: CN
Inventors: 苏洪明; 张甲瑞; 张知华; 谭千雄
Original assignee: Chongqing Technology and Business Institute
Current assignee: Chongqing Technology and Business Institute
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-03-17
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses an exempt from pneumatic tire, including being located inside supporting inner ring, be located outer tread, and set up elastic support body between supporting inner ring and the tread, a serial communication port, elastic support body is for evenly filling three-dimensional lattice material between supporting inner ring and the tread, three-dimensional lattice material includes a plurality of single cell subassemblies of arranging along the space continuation, the stable structure that is polyhedral shape of single cell subassembly for constituting by elastic member. The utility model has the advantages of structural design is reasonable, and the pressure dispersion of ground plane is even, and bearing capacity is strong, and the security is good, has shock attenuation energy-absorbing and shocks resistance.

Description

Non-pneumatic tire

Technical Field

The utility model relates to a tire technical field, very much relate to an exempt from pneumatic tire.

Background

At present, most of tires in use are pneumatic tires, and the pneumatic tires bear the load of a vehicle by using high pressure of compressed air in the tires, so that the tires have good riding comfort. However, when the pneumatic tire is punctured, air leakage is easy to occur, the bearing capacity of the tire is weakened, severe abrasion or irregular abrasion is caused to the tire surface of the tire, and when the inflation pressure in the tire is too high, tire burst also occurs, so that the driving safety of a vehicle is affected.

The non-inflatable tire, namely the tire without inflation, does not rely on air, and only utilizes the material and the structure of the tire to realize the supporting and buffering performance. At present, there are two main types of common non-pneumatic tires, one is a rubber solid tire. Such tires have been in production for over a hundred years. It features heavy tyre body, poor elasticity, high rolling resistance and high load bearing capacity. The device is suitable for vehicles with low moving speed and large load requirements. The other is an open construction tire. The shock-absorbing material is made of polyurethane materials and is manufactured by utilizing open-structure and tubular staggered three-dimensional shock absorption, and has the advantages of attractive appearance, light weight and the defects of low-speed running and no high temperature resistance.

Obviously, the existing non-solid non-pneumatic tire can only be used in low-speed driving conditions, and therefore, the development of a non-solid non-pneumatic tire with comfort, safety and durability becomes a primary task in the automobile and tire industry.

Disclosure of Invention

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a structural design is reasonable, and the pressure dispersion of ground plane is even, and bearing capacity is strong, the exempting from pneumatic tire that the security is good.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the non-pneumatic tire comprises an inner supporting ring, a tread and an elastic supporting body, wherein the inner supporting ring is positioned inside the tire, the tread is positioned on the outer layer, the elastic supporting body is arranged between the inner supporting ring and the tread, the elastic supporting body is a three-dimensional lattice material which is uniformly filled between the inner supporting ring and the tread, the three-dimensional lattice material comprises a plurality of unit cell assemblies which are arranged along the spatial extension, and each unit cell assembly is a stable structure which is formed by elastic rod pieces and is in a polyhedral shape.

The three-dimensional lattice material is an advanced light multifunctional material with high porosity and a periodic structure, and the single cell component of the three-dimensional lattice material filled between the supporting inner ring and the tire tread is composed of elastic rod pieces, so that the tire has good elasticity while realizing light weight. Due to the periodic structure of the three-dimensional lattice material, the pressure between the tire tread and the ground can be transmitted, diffused and transmitted layer by layer inwards by the rod pieces connected to the tire tread, so that the overall stress distribution is close to that of a pneumatic tire, and the pneumatic tire has better shock absorption, energy absorption and impact resistance capabilities.

Further, the maximum dimension of the unit cell assembly is less than 20 mm.

Because the maximum size of the unit cell assembly is smaller than 20mm, the maximum distance between the elastic rod piece of the unit cell assembly and the contact point of the tire tread is certainly smaller than 20mm, the elastic rod piece can uniformly support the tire tread, the acting force of small stones on the tire tread is prevented from being positioned at the supporting gap and damaging the tire tread, and the service life of the tire can be prolonged and improved.

Furthermore, the unit cell assemblies of the three-dimensional lattice material are uniformly distributed along the circumferential direction of the tread and are distributed layer by layer along the radial direction.

Therefore, the mass distribution of the whole tire is ensured to be uniform, and the tire has better dynamic balance performance. Meanwhile, the shock absorption and energy absorption characteristics of all parts of the tire are consistent.

Further, the tread is vulcanized and formed on the outer layer of the three-dimensional lattice material, and the elastic rod piece of the unit cell assembly positioned on the outermost layer is arranged in a protruding mode along the radial direction of the tread and embedded into the tread.

Therefore, the bonding strength between the tire tread and the three-dimensional lattice material is better, the bearing capacity conduction between the ground, the tire tread and the three-dimensional lattice material is facilitated, and the performance of the tire is improved.

Furthermore, a belt ply for hooping the tire body along the circumferential direction of the central line of the tire surface is embedded in the tire surface.

Therefore, the tyre body is hooped by the belted layer, the buffering and impact resistance of the tyre surface can be improved, and the contact area of the tyre surface and the ground is ensured.

Further, two sides of the tread in the width direction extend inwards in the radial direction to form a tire shoulder wrapping the edge of the three-dimensional lattice material.

Therefore, once the tire obliquely extrudes the road edge or the stone, the main stress part of the tire is still on the tire surface and is transmitted to the elastic rod piece made of the three-dimensional lattice material by the tire surface, and the damage caused by the direct collision of the three-dimensional lattice material with the outside is avoided.

Furthermore, the unit cell assembly is in a three-dimensional diamond structure.

To sum up, the utility model has the advantages of structural design is reasonable, and the pressure dispersion of ground plane is even, and bearing capacity is strong, and the security is good, has shock attenuation energy-absorbing and shocks resistance.

Drawings

Fig. 1 is a schematic structural diagram (without tread) of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of the three-dimensional lattice material portion of FIG. 1.

Fig. 3 is a schematic structural diagram of the middle tread of the present invention.

Fig. 4 is a schematic structural diagram of a three-dimensional lattice material disclosed in chinese patent literature.

Detailed Description

The present invention will be described in further detail with reference to examples.

In the specific implementation: as shown in fig. 1 to 3, a non-pneumatic tire includes an inner supporting ring 1 located inside, a tread 2 located outside, and an elastic supporting body 3 disposed between the inner supporting ring 1 and the tread 2, where the elastic supporting body 3 is a three-dimensional lattice material uniformly filled between the inner supporting ring 1 and the tread 2, the three-dimensional lattice material includes a plurality of unit cell assemblies arranged along a spatial extension, and each unit cell assembly is a polyhedral stable structure formed by elastic rods.

The three-dimensional lattice material is an advanced light multifunctional material with high porosity and a periodic structure, and the single cell component of the three-dimensional lattice material filled between the supporting inner ring and the tire tread is composed of elastic rod pieces, so that the tire has good elasticity while realizing light weight. Due to the periodic structure of the three-dimensional lattice material, the pressure between the tire tread and the ground can be transmitted, diffused and transmitted layer by layer inwards by the rod pieces connected to the tire tread, so that the overall stress distribution is close to that of a pneumatic tire, and the pneumatic tire has better shock absorption, energy absorption and impact resistance capabilities. In specific implementation, the three-dimensional lattice material in the present application can be manufactured by a 3D printing technology or a welding technology according to the "lattice material structure with functional gradient" disclosed in the chinese patent literature, application number 2017102312783, and as shown in fig. 4, the three-dimensional lattice material is formed by arranging single cells by spatial continuation, the single cells are stable structures formed by rod members, and the shapes of the single cells have pyramid, tetrahedron or other polyhedral shapes.

In practice, the maximum dimension of the unit cell assembly is less than 20 mm.

When the three-dimensional lattice material is implemented, the unit cell assemblies of the three-dimensional lattice material are uniformly distributed along the circumferential direction of the tread 2 and are distributed layer by layer along the radial direction.

In implementation, the tread 2 is vulcanized and formed on the outer layer of the three-dimensional lattice material, and the elastic rod pieces of the unit cell assemblies positioned on the outermost layer are arranged in a protruding mode along the radial direction of the tread and embedded into the tread 2.

In practice, a belt layer for hooping the tire body along the circumferential direction of the central line of the tire tread is embedded in the tire tread 2.

In practice, as shown in fig. 3, two sides of the tread 2 in the width direction extend inwards in the radial direction to form shoulders wrapping the edges of the three-dimensional lattice material.

When the unit cell assembly is implemented, the unit cell assembly is in a three-dimensional diamond structure.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The non-pneumatic tire comprises an inner supporting ring (1) positioned inside, a tread (2) positioned on the outer layer and an elastic supporting body (3) arranged between the inner supporting ring (1) and the tread (2), and is characterized in that the elastic supporting body (3) is a three-dimensional lattice material uniformly filled between the inner supporting ring (1) and the tread (2), the three-dimensional lattice material comprises a plurality of unit cell assemblies arranged along the spatial extension, and each unit cell assembly is a stable structure which is formed by elastic rod pieces and is in a polyhedral shape.

2. The non-pneumatic tire of claim 1, wherein the unit cell assembly has a maximum dimension of less than 20 mm.

3. The non-pneumatic tyre as claimed in claim 1, wherein the elementary cell elements of three-dimensional lattice material are arranged uniformly in the circumferential direction of the tread (2) and are distributed radially one after the other.

4. The non-pneumatic tire according to claim 3, wherein the tread (2) is vulcanized and formed on the outer layer of the three-dimensional lattice material, and the elastic bar members of the unit cell assembly located on the outermost layer are disposed to protrude radially outward of the tread and are embedded in the tread (2).

5. The non-pneumatic tire according to claim 4, wherein a belt for tightening the carcass in the circumferential direction of the tread center line is embedded in the tread (2).

6. The non-pneumatic tire according to claim 1, wherein the tread (2) has two widthwise sides extending radially inward to form shoulders surrounding the edges of the three-dimensional lattice material.

7. The non-pneumatic tire of claim 1, wherein said unit cell elements are in a three-dimensional diamond configuration.

8. An airless tire as claimed in claim 1, wherein the supporting inner ring (1) is a rim.