| 摘要 |
PROBLEM TO BE SOLVED: To provide a power tool suppressing the permanent deformation of an elastic member and maintaining a vibration reducing effect over a long period of time.SOLUTION: A rubber ring 25 serving as an elastic member is disposed between a wheel washer 22 mounted to a spindle 17, and a base 12a of a diamond grinding wheel 12, and these members are fixed with a lock nut 27 screw-connected to the tip of the spindle 17. Vibration received by the diamond grinding wheel 12 in grinding work is thereby absorbed by the rubber ring 25. A mounting hole 12c of the base 12a is loosely fitted to a boss 24 of the wheel washer 22, and a spring pin 28 with both ends supported by the wheel washer 22 and a portion of a presser plate 26 of the lock nut 27 is inserted in a loosely fitted state through an insertion hole 12d of the base 12a and an insertion hole 25a of the rubber ring 25. |
