| 摘要 |
A vibration damped hand held rotary grinding machine comprising a housing (10) with at least one handle (17, 18), a rotation motor (11), an output shaft (13) drivingly coupled to the motor and having mounting means (14) for attachment of a grinding wheel (15), and a sector-shaped non-resilient safe guard (19) which is rigidly attached to the housing (10) and surrounding partially the grinding wheel (15) and which has an arcshaped rim portion (20) encircling partially the grinding wheel circumference. A vibration damping inertia means (22; 22a, 22b) is rigidly associated with the safe guard (19) on or adjacent the rim portion (20), such that the centre of gravity of substantially all axial plane cross sections through the inertia means (22; 22a, 22b) is located at a radius (R1) of at least 90% of the rim portion (20) radius (R). Preferably, the safe guard (19) is semicircular and the inertia means (22; 22a, 22b) extends from both ends of the safe guard rim portion (20). <IMAGE> |
