| 摘要 |
PURPOSE: A combustion powered tool suspension for an iron core fan motor is provided to reduce operationally-induced reciprocal accelerations of the motor while keeping the oscillations of the motor within an acceptable range. CONSTITUTION: A suspension mechanism(50) for a motor(40) of a combustion chamber fan(164) in a combustion powered hand tool is constructed and arranged for driving a driver blade(146) to drive a fastener into a work piece. The tool generates an upward axial acceleration of the motor(40) upon a combustion in the chamber, and generates a subsequent reciprocal axial acceleration of the motor(40) when the piston(144) bottoms out on a bumper(150). At least one of the accelerations causes the motor(40) to oscillate relative to the tool. The suspension mechanism(50) includes a suspending portion configured for providing progressive dampening to the motor(40) upon the generation of the axial accelerations.
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