本发明提供一种打钉机，可藉由简单的机构来实现齿条的往复运动，并且降低齿条的卡合解除时的摩擦而顺滑地执行齿条的卡合解除。所述打钉机包括：鼻端，沿规定方向延伸；罩体，包含所述鼻端；叶片，包含卡合部，且可沿所述罩体的所述规定方向移动地受到导引，从而可经由所述鼻端钉入扣件；以及传递机构，包含与所述卡合部卡合而传递驱动力的被卡合部；且所述传递机构包括对所述卡合部与所述被卡合部的卡合的解除进行导引的滚筒机构。; a housing including the nose; a blade including an engaging portion and adapted to be movably guided in the predetermined direction of the housing so as to nail a fastener via the nose; and a transmitting mechanism including an engaged portion which engages with the engaging portion and transmits driving force and a roller mechanism which guides the releasing of the engagement between the engaging portion and the engaged portion.
