| 摘要 |
PROBLEM TO BE SOLVED: To prevent a trouble where a crack appears in a rubber elastic body positioned at the tip of a blade of a core bar to cause a loss of rubber or to grow in the longitudinal direction of a rubber crawler to cause edge breakage. SOLUTION: The tip regions of right and left blades of the core bar is formed as a thick section that is folded slightly to inner peripheral side or toward the inner peripheral side, volumes of the rubber elastic bodies at the tip regions of the right and left blades of the core bar are increased, rubber ridges are formed on the inner peripheral side correspondingly to the tip regions of the right and left blades of the core bar, and a recess is formed without continuing adjacent rubber ridges. The number 2 denotes the rubber elastic body, 3 denotes the core bar, 3b denotes the blade of the core bar, 3b<SB>0</SB>denotes the tip region of the blade of the core bar, 6 denotes the rubber ridge, and 7 denotes the recess. COPYRIGHT: (C)2005,JPO&NCIPI
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