Hoop tube type air-free tire

Abstract

The invention provides a hoop inner tube type non-pneumatic tire. The tire comprises an inner tube and an outer tube which are connected with each other; at least three tire supporting pipes transversally pass through, at an equal interval, and are fixed on the two sides of a circular pipe ring with a circular cross section, and two end sections of each tire supporting pipe extend out of the two sides of the circular pipe ring; at least one elastic hoop with a waved lateral profile is fixedly arranged at the inner side of the circular pipe ring to form a hoop inner tube; interconnected elastic parts are sleeved and a connected outer tube is cast on the surfaces of parts, where no tire supporting pipes are arranged, of the hoop inner tube from the inside to the outside in sequence. The elastic hoop of the tire has good extension and contraction performance, which facilitates mounting and dismounting of the tire and enables the tire to be hooped on a rim tightly; the tire supporting pipes are simple and easy to manufacture and accurate to position; the inner tube and the outer tube are connected, bumps and collapse do not exist, and only two molds are needed for integrated forming; and thus, the hoop inner tube type non-pneumatic tire has the advantages of low possibility of tire separation, small rolling resistance and suitability for high speed running and the like. A sample of the hoop inner tube type non-pneumatic tire provided by the invention has been manufactured.

Description

technical field [0001] The invention relates to the invention of air-free tires, especially hoop inner tubes and air-free tires Background technique [0002] The first major defect of the existing air-free tires is that the tire hoop is not tight enough to the rim, which causes the tire to separate from the rim and slide relative to the rim, which is not suitable for high-speed use. The second major defect is the uneven deformation and collapse inside the tire. As a result, the contact surface of the tire is uneven and enlarged, and the driving vibration and rolling resistance of the whole vehicle increase. For example, the patent No. 200810072351.8 new air-free tire also has these two major defects. One is that it does not set and mention the components for the tire to tighten the rim. In this way, the influence on the radial expansion and contraction of the inner side of the tire ring is almost zero, and it does not contribute to the tightening of the tire on the rim. Sec...

AI Technical Summary

Problems solved by technology

[0002] The first major defect of the existing air-free tires is that the tire hoop is not tight enough to the rim, causing the tire to detach from the rim and slide relative to the rim, which is not suitable for high-speed use. The second major defect is the uneven deformation and collapse inside the tire. It leads to uneven and enlarged tire contact surface, vehicle vibration and increased rolling resistance

For example, the patent No. 200810072351.8 new air-free tire also has these two major defects. One is that it does not set and mention the components for the tire to tighten the rim. In this way, the impact on the radial expansion and contraction of the inner side of the tire ring is almost zero, and it does not contribute to the tightening of the tire on the rim. Second, there is a gap between the inner ring tube and other components. The gap is filled with filling material. The outer periphery of the filling material, the positioning device, and the circular steel ring are all covered with mesh. In this way, when the tire is stressed, the filling material is squeezed and displaced and the mesh is deformed, resulting in inner and outer tires. Concave-convex and subsidence appear between the tires, the force on the tire is uneven, and the rolling resistance increases. In addition, it is difficult to limit the position of the steel hoop with the mesh covering filler of this technology, and the position error of the positioning column installed on the steel hoop will be large. The probability of the positioning column being randomly inserted into the mold hole tends to be zero. Perhaps because of this, no samples of this patented technology have been released so far. It can be seen that this patented technical solution is not a question of whether it is good or not, but a question of whether it works.

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