To provide an oscillation drill screwdriver which stably generates oscillation.
The oscillation drill screwdriver is provided with: a spindle 2 rotated/driven by a motor 9 and axially slidable; and an oscillation generation means for generating the oscillation by a predetermined amount or more of slide of the spindle in a body housing 1 attached with a switching handle 27. The screwdriver is provided with: a switching member 22 integrally rotated with the switching handle 27 and restricting an amount of slide of the spindle 2; and a fixing member 21 positioned opposed to the switching member 22. Projections 63a, 63b and recessed parts 64a, 64b are provided on opposed surfaces of the switching member 22 and the fixing member 21. Only when the projections 63a, 63b and the recessed parts 64a, 64b are just fitted to each other and the switching member 22 is moved to the fixing member 21 side, it is set such that the spindle 2 can slide at the predetermined amount or more.
NISHII KAZUHIKO
YAMAMOTO MASAO
Atsuo Mori
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