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Airless tires

A technology of airless tires and tires, applied to non-pneumatic tires, tire parts, wheels, etc., can solve problems such as damage, and achieve the effect of improving durability and excellent ride comfort

Active Publication Date: 2021-04-06
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] As described above, in order to improve ride comfort, in an airless tire having spokes arranged obliquely with respect to the radial surface of the tire, deformation tends to concentrate on the outer end side in the tire radial direction of the spokes. Part of the starting point is the problem of early damage

Method used

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  • Airless tires
  • Airless tires
  • Airless tires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0067] trial production Figure 1~4 Airless tires of the basic construction (equivalent to tires with a tire size of 125 / 80R13) were tested for durability, tire weight, and TFV. The structures other than the spokes are substantially the same for each tire. The spokes are molded integrally with the tread ring and the hub portion via an adhesive layer by a polyurethane resin (thermosetting resin) casting method. The main shared specifications are as follows.

[0068] The shortest distance Ld of the spokes: 80mm

[0069] The thickness t of the inner end side of the spoke h : 3mm

[0070] Spoke angle θ1, θ2: 20 degrees

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Abstract

The present invention relates to an airless tire excellent in durability. The airless tire (1) has: a cylindrical tread ring (2) having a contact surface (2a) made of an elastic body; Radially inward and fixed to the axle and substantially composed of non-stretchable material; a plurality of spokes (4) composed of elastic material and used to join the tread ring (2) to the hub portion (3). Each spoke (4) has an outer end (6) fixed to the tread ring (2) side, and an inner end (7) fixed to the hub portion (3) side. Both the outer end (6) and the inner end (7) extend obliquely with respect to the tire axial direction. The compressive rigidity (S r ) is greater than the compression rigidity of the inner end (7) side of the spoke (S h ).

Description

technical field [0001] The present invention relates to an airless tire capable of supporting a load by its own structure without using high-pressure air. Background technique [0002] In recent years, various airless tires have been proposed by the following patent documents 1 to 4 and the like. An airless tire can support a load by its own structure without using high-pressure air. Therefore airless tire has the advantage of not blowing out. [0003] exist Figure 6 A side view of a typical airless tire 100 is shown in . The airless tire 100 has: a cylindrical tread ring 102 having a contact surface made of an elastic body; a metal hub portion 106 arranged radially inside the tread ring 102 and fixed to the axle 104; spokes 108, which are used to connect the tread ring 102 to the hub portion 106. Each spoke 108 is made of, for example, a relatively soft elastomer material, and has an outer end 108 a fixed to the tread ring 102 side, and an inner end 108 b fixed to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B9/26
CPCB60B9/26B60B2900/313B60C7/143B60C7/18B60C7/146B60C7/14
Inventor 岩村和光杉谷信
Owner SUMITOMO RUBBER IND LTD
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