| 摘要 |
An explosive powder charge-operated setting tool including a guide cylinder displaceable relative to the tool housing, a drive piston displaceably arranged in the inner bore of the guide cylinder, a control pin projecting from the guide cylinder in a direction opposite to a setting direction, a spring-biased firing pin cooperating with the control pin, a release pusher for displacing the mating surface of the firing pin out of an axial projection surface of the control pin, a trigger for actuating the release pusher, and a back-up pin projecting into the inner bore of the guide cylinder, with a smallest distance (A3) between the back-up pin and a bottom of the inner bore facing in the setting direction corresponding to a length of the drive piston between its end surface facing in the direction opposite to the setting direction and its stop surface facing in the setting direction and cooperating with the back-up pin, and with a smallest distance (A1) between the back-up pin and a free end surface of the control pin plus a clearance between the mating surface of the firing pin and the free end surface of the control pin corresponding to a smallest distance (A2) between the back-up pin and the mating surface of the firing pin.
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