Non-Pneumatic Tire Spoke Structure with Reinforcing Layers
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Solution Overview
Problem
Non-pneumatic tires face limitations in load carrying capacity and durability due to the characteristics of polymeric spokes, which restrict their performance compared to pneumatic tires.
Innovation Solution
A tire assembly with a spoke structure composed of homogenous polymer elements, each featuring a reinforcing layer and uniform rubber material, arranged circumferentially around the inner central rim with triangular openings for enhanced load distribution and flexibility, providing a secure mechanical interlocking arrangement with the rim.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polymeric spokes are used in non-pneumatic tires, then the tire can operate without air pressure, but the load carrying capacity and durability are limited
Solution Approach 1:
The patent applies composite materials by combining polymeric spokes with reinforcing layers embedded within them. The reinforcing layers provide additional structural strength and durability while maintaining the non-pneumatic design. This composite approach allows the tire to achieve load carrying capacity and durability levels comparable to pneumatic tires without relying on air pressure.
2Reliability
If traditional spoke structures are used, then the tire structure is simple, but the load distribution and flexibility are insufficient
Solution Approach 1:
The spoke structure is segmented into multiple individual spokes arranged in a circular pattern, with each spoke containing embedded reinforcing layers. This segmentation allows for better load distribution across the tire structure while maintaining manufacturing feasibility. The triangular openings between adjacent spokes further enhance flexibility and load distribution without excessive complexity.
Solution Approach 2:
The reinforcing layers are strategically positioned within the polymeric spokes at locations where strength is most needed. This local reinforcement approach optimizes load distribution while minimizing unnecessary material addition and structural complexity. The triangular openings between spokes provide localized flexibility where required.
Data Source
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AI summary
A tire assembly (200) for a mobile vehicle is disclosed. The tire assembly (200) comprises an outer flexible ring (210) mounted to an inner central rim and a spoke structure extending radially between the inner central rim and the outer flexible ring (210). The spoke structure is constructed from a plurality of elements (220) disposed side-by-side such that the elements (220) extend circumferentially around the perimeter of the inner central rim and radially inside the outer flexible ring (210). The spoke structure further defines a plurality of triangular openings (215) disposed between the outer flexible ring (210), a first element of the plurality of elements (210) and a second element (210) of the plurality of elements, the second element being located adjacent to the first element. Also, a method for non-pneumatically supporting a mobile vehicle is disclosed.