| 摘要 |
A fastener driving tool (1) has a housing (2), a nose portion (5), a magazine (6), a motor (7), a plunger (8), a drive mechanism (13,14,18), a trigger switch (10), a detection switch (25), an energizing switch (101), a failure detection circuit (140). The magazine (6) is configured to store and supply a fastener to the nose portion (5). The motor (7) is provided in the housing (2). The a plunger (8) is provided in the housing (2) to move between a top dead center and a bottom dead center. The plunger (8) has a blade (8a) for impacting the fastener. The drive mechanism (13,14,18) is configured to drive the plunger (8) with power from the motor (7). The trigger switch (10) is configured to drive the drive mechanism (13,14,18), and operated by a user. The detection switch (25) is configured to be switched according to an arrangement of the drive mechanism (13,14,18). The energizing switch (101) is configured to control power feed of the motor (7). The energizing switch (101) is switched by the trigger switch (10) and the detection switch (25). The failure detection circuit (140) is configured to turn off the energizing switch (101), based on a condition of the detection switch (25) prior to impacting the fastener. |
