| 摘要 |
<p>A fastening device (10) drives one or more fasteners (32) into a workpiece (34). The fastening device generally includes a tool housing (16) and a multistage solenoid (12) having at least a first stage (18), a second stage (20) and an armature member (106) that travels therebetween. The multistage solenoid is contained within the tool housing. A driver blade (30) is connected to the armature member (106). The driver blade is operable between an extended condition and a retracted condition. A control module (22) determines a position of the armature member (106) relative to at least one of the first stage, the second stage and a combination thereof. A trigger assembly (36) is connected to the control module (22) and activates a driver sequence that moves the driver blade (30) member between the retracted condition and the extended condition. The control module directs power between the first stage (18) and the second stage (20) based on the position of the armature member (106) relative thereto.
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