Tire insert

A technology of tires and inserts, applied to tire parts, pneumatic tires, bicycle tires, etc., can solve problems such as internal fluid circulation of tubeless tires, etc., and achieve easy installation, good shock absorption, and excellent rolling resistance Effect

Active Publication Date: 2021-05-07
李荣起
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, said prior document relates to an insert for an inner tube that can be used with an air tube, has a structure in which air is directly injected into the air tube from an air injection portion of the rim, and does not recognize counter-rolling of a tubeless tire at all. Fluid circulation inside the tire affected by drag, puncture, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] As the conditions of Example 1, a Maxxis-Minion DHR 2 (27.5×2.3) tire was used, and the air pressure inside the tire was set at 10 psi.

[0120] In the experimental method of Example 1, the tire incorporating the insert was mounted on a pressure measuring device called a Load Cell, and 5 kg was dropped above the tire at a height of 300 mm The weight of the weight, and the force or load (kgf) applied to the load cell is measured by time, and the maximum load point (kgf) is selected as an index for evaluating the shock absorption performance.

[0121] The vibration in Example 1 was measured by rotating the drum with the tire in contact with the drum, and using a vibration measuring instrument capable of measuring in units of μm. At this time, the speed of the drum is 20 km / h, and the weight is 45 kg. The vibration was measured for 10 minutes after the start of driving to obtain an average value. For reference, the vibration measurement values ​​in Table 1 below are disp...

Embodiment 2

[0141] As the conditions of Example 2, a Maxxis-Minion DHR 2 (27.5×2.3) tire was used, and the air pressure inside the tire was set at 10 psi. In addition, experiments were performed by adjusting the horizontal major diameter of the tire to 55 mm and adjusting the horizontal major diameter of the insert to a range of 5.5 mm to 110 mm. That is, using the ratio of the horizontal major diameter of the tire to the horizontal major diameter of the insert (w i / w t ) within the range of 0.1 to 2 for every 0.1 insert.

[0142] The hardness of Example 2 was adjusted with the expansion ratio under the same compounding conditions. In addition, the hardness of the insert 100 was measured by using a hardness testing method based on ASTM D2240. Inserts are used that increase hardness by 10 according to the amount of foaming within the range of Shore C hardness of 10 or more, Shore C hardness of 90 or less, Shore A hardness of 10 or more, and Shore A hardness of 90 or less.

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Abstract

The present invention relates to a tire insert wherein a rim, a tire, and the tire insert can be fastened together, the tire insert comprising a flow channel connecting the top and bottom surfaces of the insert to each other.

Description

technical field [0001] The invention relates to an insert for a tire. Background technique [0002] Recently, with increasing awareness of environmental protection and low-carbon movement, the popularity of city-type bicycles (shared bicycles) is spreading globally. Also, as more and more people enjoy extreme sports such as mountain biking, the technology for bicycle tires continues to evolve. Generally, there is a danger of blowing out if a tube-mounted pneumatic tire in use is damaged by a sharp object during driving. [0003] In order to solve the problems, demand for solid tires has recently increased. A solid tire is a tire made of, for example, only rubber, and since it does not inject air, there is no risk of a blowout, and it can be used for a long period of time. [0004] However, solid tires have the limitations of being heavier and having greater rolling resistance than pneumatic tires. Therefore, there is a need to develop a tire technology that can utilize b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C17/04B60C5/00
CPCB60C2200/12B60C17/061B60C17/065B60C17/04B60C5/002B60C5/12B60C17/041
Inventor 李荣起
Owner 李荣起
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