| 摘要 |
The object of the invention is to provide a rubber crawler which effectively prevents the crack generation in the vicinity of the basal part of a guide protrusion by restring the shearing force. A core-less rubber crawler 1 has a guide protrusion 3 protruding from an internal surface of a rubber main body 12 in the shape of an endless belt, and the protrusion extends in the lengthwise direction of the rubber main body at the center with respect to the widthwise direction thereof, and ground contacting lugs 4A, 4B are provided on the rubber main body characterized in that non-ground contacting areas 6,6 are formed on the ground contacting lugs correspondingly to a region where the guide protrusion 3 is provided. By the existence of the non-ground contacting area 6,6 of the ground contacting lugs 4A, 4B correspondingly to the place where the guide protrusion 3 is provided, no ground contacting repulsive force is received in the non-ground contacting area 6. Therefore, it is possible to restrict the shearing force in the vicinity of the basal part of the guide protrusion 3, so that a crack generation can be effectively prevented.
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