| 摘要 |
PROBLEM TO BE SOLVED: To provide a spike device for a tire preventing the damage of a spike pin and a tire besides having no anxiety about the fall of the spike pin, excellent in grip force and making only the spike pin replaceable. SOLUTION: A spike device detachably mounted in a recessed groove 3a provided at the outer periphery of tire 3 comprises a base body 2 formed of elastic material, and a spike pin 1 detachably fixed to the base body 2, with the tip part protruded onto the road surface side. When the spike pin 1 receives horizontal impact from the road surface, a collar part 1b protruded from the lower end outer periphery of a pin head part 1a supports to prevent the spike pin 1 from inclining, and a washer 22 formed of rigid material and integrally provided at the base body 2 prevents the expansion of an engaging hole 12b engaged with the spike pin 1, so as to prevent the fall of the spike pin 1.
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