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Non-pneumatic tire based on inner sunken hexagonal negative poisson ratio support structure

A non-pneumatic tire and support structure technology, which is applied to special tires, road vehicle tires, tire parts, etc., can solve the problem of inability to guarantee the lateral stiffness and strength of tires, insufficient lateral stability of non-pneumatic tires, and affect the smooth running of vehicles In order to achieve the effect of reducing the difficulty of replacement and maintenance costs, improving the equivalent strength and stiffness of the structure, and avoiding the risk of stripping

Pending Publication Date: 2018-05-29
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the negative Poisson's ratio structure described in this patent only provides a negative Poisson's ratio effect in the radial direction of the tire, and cannot guarantee the lateral stiffness and strength of the tire, making the non-pneumatic tire insufficient in lateral stability
In addition, there is only one layer of contact-resistant material between the negative Poisson’s ratio ring structure and the ground. During driving, the impact of the road on the tire will be directly transmitted to the ring structure, causing the structure to vibrate greatly and affecting the smooth running of the vehicle. sex

Method used

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  • Non-pneumatic tire based on inner sunken hexagonal negative poisson ratio support structure
  • Non-pneumatic tire based on inner sunken hexagonal negative poisson ratio support structure
  • Non-pneumatic tire based on inner sunken hexagonal negative poisson ratio support structure

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Embodiment 1

[0031] Such as figure 1 As shown, it is a structural schematic diagram of the non-pneumatic tire based on the concave hexagonal negative Poisson's ratio support structure of the present invention. The non-pneumatic tire includes a tread 1, a carcass 2, and a negative Poisson's ratio support structure sequentially from outside to inside in the radial direction. The inner side of the tread 1 is glued together with the outer side of the carcass 2 . The carcass 2 is made of polyurethane foam material with negative Poisson's ratio. The negative Poisson's ratio support structure includes an outer reinforcing ring 31 connected to the inner side of the carcass 2 , an inner reinforcing ring 32 connected to the wheel rim, and a negative Poisson's ratio cellular support 33 connecting the inner and outer reinforcing rings. The multicellular support body is formed by connecting a plurality of concave hexagonal unit cell structures 331 distributed in concentric rings through connecting ce...

Embodiment 2

[0037] Image 6 It is a schematic diagram of the concave hexagonal negative Poisson's ratio unit cell structure of Example 2 of the present invention. The concave hexagonal unit cell structure 331 is composed of a pair of concave hexagonal unit structures composed of 8 curved cells 333 and 4 supporting cells 334, which are formed by orthogonal nesting connection at two concave points 335 . In order to ensure negative Poisson's ratio characteristics, the inner angles of the concave hexagonal unit structure formed by the curved cell arm 333 and the supporting cell arm 334 at the upper and lower concave points can be the same or different, but they must be greater than 180°. The hexagon satisfies the concave property. At the same time, a certain radial distance needs to be ensured between the two concave points 335 . In this embodiment, the inner angle at the upper concave point is 200°, the inner angle at the upper concave point is 190°, and the radial distance between the in...

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Abstract

The invention discloses a non-pneumatic tire based on an inner sunken hexagonal negative poisson ratio support structure. The non-pneumatic tire includes a tread, a tire body and a negative poisson ratio support structure which are arranged in the radial direction from outside to inside; the inside of the tread is cemented with the outside of the tire body as a whole, and the tire body is a polyurethane foam material with a negative poisson ratio characteristic; the negative poisson ratio support structure includes an outer reinforcing ring, an inner reinforcing ring, and a negative poisson ratio multi-cell support connecting the inner reinforcing ring and the outer reinforcing ring; and the multi-cell support is formed by a plurality of concentric ring-shaped inner sunken hexagonal unit cell structures connected to each other by connecting cell arms, wherein each of the inner sunken hexagonal unit cell structures is formed by orthogonal nesting of a pair of inner sunken hexagonal unitstructures. According to the non-pneumatic tire based on the inner sunken hexagonal negative poisson ratio support structure, by combining negative poisson ratio porous materials and multi-cell structures, the non-pneumatic tire is provided with negative poisson ratio and rigidity and strength load enhancement characteristics both in the radial and axial directions, and the carrying capacity andthe lateral stability of the non-pneumatic tire are effectively improved.

Description

technical field [0001] The invention relates to the technical field of automobile tires, in particular to a non-pneumatic tire based on a concave hexagonal negative Poisson's ratio support structure. Background technique [0002] Pneumatic tires with inner tubes, which are widely used at present, are a comprehensive solution to ensure the driving performance, ride comfort and comfort of vehicles during operation. However, pneumatic tires have potential safety hazards that are prone to tire explosion and require regular maintenance. In addition, pneumatic tires cannot achieve the ideal adhesion state during braking. To make up for the resulting vehicle braking defects, additional electronic control systems such as ABS and ESP need to be installed, which increases the complexity of the vehicle system and the cost of the vehicle. Due to its advantages in safety, stability, bearing capacity and adhesion, non-pneumatic tires have gradually become an important technical trend in t...

Claims

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Application Information

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IPC IPC(8): B60C1/00B60C11/01
CPCB60C1/00B60C11/01B60C2200/04B60C2001/0091
Inventor 王陶王良模王亚进江怡李振陈刚
Owner NANJING UNIV OF SCI & TECH
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