| 摘要 |
PROBLEM TO BE SOLVED: To reduce malfunction during nailing by preventing a fire source for a spark to be generated with an ignition plug from being misfired by wind of a fan in a combustion type nailing machine. SOLUTION: Walls 27A, 27B are formed to the upper face 28 of a combustion chamber of a head cover 20 so as to delay a flow velocity of a mixture gas flowing a space between the ignition plug 9 and an ignition ground 24 where sparks occur and to cover around the ignition plug 9 and the ignition ground 24. COPYRIGHT: (C)2006,JPO&NCIPI
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