Bicycle pneumatic tyre used for irregular road surfaces

Abstract

The invention relates to a bicycle pneumatic tyre used for irregular road surfaces. Specifically, the vertical direction of a tyre cross section is taken as a tyre radial direction, the lateral direction is adopted as a tyre axial direction, and a tread center line is adopted as an equatorial plane; a plurality of unit patterned block groups are uniformly distributed on a tyre tread; each patterned block group comprises an intermediate principal patterned block in an isosceles trapezoid shape, two trapezoidal transitional patterned blocks symmetrically distributed on two sides of the intermediate principal patterned block and positioned on the same tyre axial direction with the intermediate principal patterned block, two trapezoidal intermediate secondary patterned blocks are positioned between and staggered from the intermediate principal patterned block and the transitional patterned blocks; the tread at the outside of each intermediate secondary patterned block corresponding to the intermediate principal patterned block is provided with an irregular polygonal tyre shoulder patterned block, so that the intermediate principal patterned block, as well as the transitional patterned blocks on the two sides, the two intermediate secondary patterned blocks, and the two shoulder patterned blocks are alternately distributed along the circumferential direction of the whole tyre at equal spacing. The bicycle pneumatic tyre provided in the invention is equipped with a plurality of protruded patterned blocks with specific shapes and arrangements, thus balancing road holding capacity, traction, manipulation, and durability as well as other use performances of the tyre.

Description

technical field [0001] The present invention relates to a pneumatic tire for bicycles, and more particularly to a pneumatic tire for bicycles whose tread pattern configuration is optimized for use on irregular off-road roads. Background technique [0002] The tires used for off-road bicycles are usually equipped with a plurality of protruding pattern blocks on the tread in order to be able to cling to the road surface and ride safely on irregular road surfaces such as mud, sand, and hard soil. Depending on the shape and arrangement of the tread blocks, the performance such as grip and traction will also vary. Therefore, it is necessary to design tires with different block shapes and arrangements in accordance with the required application and main driving road surface. [0003] Generally, off-road bicycle tires used on irregular roads will have a force opposite to the forward direction acting on the protruding pattern blocks when driving, and the pattern blocks will be defor...

AI Technical Summary

Problems solved by technology

[0004]1. A thicker pattern block will inevitably increase the ground contact area, causing more energy loss during driving and weakening the handling performance;

[0005]2. If the angle between the circumferential wall of the pattern block increases, the volume of the pattern groove will be reduced, thereby reducing the performance of mud discharge and drainage;

[0006]3. Increase tire weight and increase inertia, making it difficult to climb and accelerate, affecting the durability and sense of speed of riders

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