HAND TOOL DEVICE HAVING VIBRATION DAMPING DEVICE

PROBLEM TO BE SOLVED: To provide a vibration damping device which is not operated when a pressing force is insufficient, and has a simple configuration. SOLUTION: A hand tool device 1 comprises a housing 2, and an air spring type impact mechanism 3 having an impact piston 4. A header 5 is hit by the impact piston 4. The hand tool device 1 comprises at least one vibration damping device 6 having a vibration damping mass 7. The vibration damping mass 7 is pressed against the housing 2 by axially applying a spring load with at least one spring 8a. The vibration damping device 6 can be actively excited by the header 5 located in the operating position via an exciting means 9 slidable axially. It is preferable that a guide pipe 11 for the header 5 is at least partially pressed circumferentially by the exciting means 9. COPYRIGHT: (C)2008,JPO&INPIT