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摘要

The invention relates to a supplementary unit for a portable fastener driving assembly, such as a nailing gun, comprising a percussion device which is reciprocatingly movable at a working end of the assembly. The supplementary unit is characterized by an elongated percussion unit (30) whose one end can be connected to the active end (12) of the assembly and whose other end communicates with a magazine (80) for fasteners of the nail-plate type (110) and includes a fastener outfeed opening for fasteners advanced in the magazine. The percussion unit (30) includes a reciprocatingly mounted fastener percussion element (36) which is activated by the percussion device (14).