| 摘要 |
PROBLEM TO BE SOLVED: To lessen the influence on rubber projections of an eventually generated poor workmanship in meshing of the rubber projections with sprocket teeth by forming a notch at the peripheral forefront of each part contacting with the rubber projection and thereby enhance the durability of a crawler. SOLUTION: Sprocket structure of the core-less crawler 10 includes a sprocket 20 used in transmitting a driving force for the core-less crawler having projections 11 provided on the inside circumferential surface at a certain pitch, in which the sprocket teeth 21 are formed on the peripheral edge at the same pitch as that of the rubber projections 11, and a notch 23 is formed at the peripheral forefront of each sprocket tooth 21. COPYRIGHT: (C)2007,JPO&INPIT
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