| 摘要 |
PROBLEM TO BE SOLVED: To prevent an end of a nail driving portion from separating from a driven material even if a reaction is received during nail driving. SOLUTION: A nail driving machine includes a contact member for forming a combustion chamber sealed by moving a movable sleeve 8 upward after movement to an upper portion of a body having a hammering mechanism by being pressed against the driven material and a movable cover 38 disposed so as to cover an outside of the contact member and slidable in a nail driving direction. The contact member is always spring-forced in a driving direction independently of the movable sleeve 8. COPYRIGHT: (C)2009,JPO&INPIT
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