| 摘要 |
PROBLEM TO BE SOLVED: To provide an undercup for a bush cutter that can inhibit the broken pieces of the periphery of the undercup from flying apart, even when it is damaged. SOLUTION: The cutting blade shaft is passed through and the cutting blade is fitted to the lower face of the lower pinching-pressing body in a pair of upper and lower pinching-pressing bodies. A bolt is threaded in the cutting blade shaft upward from the lower part to pinch the pair of upper and lower pinching-pressing bodies to hold the cutting blade and a downward projection is formed in a ring around the periphery of the pocket into which the bolt is buried whereby the undercup is constituted. Then, an auxiliary disk is provided inside the undercup so that the outer periphery of the undercup may be covered with the disk. COPYRIGHT: (C)2003,JPO
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