Pneumatic tire for bicycle

A technology for pneumatic tires and two-wheelers, applied in pneumatic tires, motorcycle tires, tire parts, etc., can solve the problems of narrow application range and insufficient driving performance, improve driving performance, suppress uneven wear, and improve the application range. wide effect

Inactive Publication Date: 2008-10-01
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, such conventional pneumatic tires for motorcycles have the problem that, although the driving performance can be improved to some extent, they cannot be installed on the nearest two-wheeled vehicle that has significantly improved performance and runs on ordinary roads. Insufficient driving performance when riding on a two-wheeled vehicle or a racing two-wheeled vehicle
In addition, there is also a problem that the application range is narrow because the block type must have both longitudinal grooves and lateral grooves formed on the tread portion.

Method used

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  • Pneumatic tire for bicycle
  • Pneumatic tire for bicycle
  • Pneumatic tire for bicycle

Examples

Experimental program
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Effect test

Embodiment approach 1

[0037] exist figure 1 , 2 In the figure, reference numeral 11 is a pneumatic tire for a two-wheeled vehicle suitable for high-speed running of a rear wheel whose direction of rotation is specified, and the tire 11 is formed by including a tread portion 13, a pair of sidewall portions 14, and A pair of bead portions 15; the meridian cross-section of the tread portion 13 is substantially arc-shaped, and is smoothly curved outward in the radial direction in a convex shape; the pair of sidewall portions 14 are generally directed toward Extending radially inward; the pair of bead portions 15 are continuous with the radially inward ends of the two sidewall portions 14, and respectively embedded with bead cores 16; the width between the tread ends E is taken as the maximum tire width.

[0038] In addition, the above-mentioned tire 11 further includes a carcass layer 20 extending in a curved shape between the pair of bead cores 16 to reinforce the sidewall portion 14 and the tread port...

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Abstract

In a pneumatic tire for a bicycle having grooves (30, 31) (inclining portion (32)) formed in the outer surface of a tread (13) to extend substantially in the width direction, and having its rotational direction specified, driving performance or braking performance is enhanced. Since driving force acts on a tire for a rear wheel during acceleration traveling, the entire land (35) between the inclining portions (32) begins to tilt rearward in the rotational direction; since the inclining portions (32) are inclining forward in the rotational direction, as a whole, from a deepest portion (D) toward the end (K) of an opening, a substantially triangular brace (36) formed at the rear end of each land (35) in the rotational direction resists powerfully thus suppressing tilt at each land (35) effectively. Consequently, drive performance is enhanced by enhancement in grip force during driving, and occurrence of uneven wear is suppressed by a uniformed ground-contacting pressure.

Description

technical field [0001] The present invention relates to a pneumatic tire for two-wheeled vehicles in which the rotation direction can be improved and the driving performance or braking performance can be improved. Background technique [0002] Conventionally, as a pneumatic tire for motorcycles in which the driving performance and the braking performance can be improved simultaneously, the tire described in Japanese Patent Application Laid-Open No. 2003-146017 is known. [0003] The tire includes a block row composed of a plurality of blocks on the tread portion. These blocks are divided by inclined longitudinal grooves inclined relative to the tire circumferential direction line and inclined transverse grooves inclined relative to the tire axial line, and along Arranged in the tire circumferential direction; the above-mentioned inclined longitudinal grooves are inclined in the direction of expanding relative to the tire rotation direction at an angle α greater than 10° and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/04B60C5/00B60C11/13
CPCB60C11/1323B60C11/0302B60C11/13B60C2200/10B60C2011/0374
Inventor 石山诚
Owner BRIDGESTONE CORP
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