Patent ID: 7306050

Claim:
A toothed ring connecting structure of a power tool, comprising: a main body with a predetermined length, the main body having an interior space and a first opening and a second opening at two ends; a motor accommodated in the interior space of the main body, the motor having an output shaft extending from a first end of the motor in parallel to an axis of the main body; a fixing cap having a body section, a first end of the body section being fixed with the first end of the motor, the body section being formed with a shaft hole through which the output shaft of the motor is coaxially fitted, a second end of the body section being formed with a fixing thread hole with a predetermined inner diameter, the fixing thread hole inward axially extending from the second end of the body section by a predetermined depth, the fixing thread hole coaxially communicating with the shaft hole, a free end of the output shaft being positioned within the fixing thread hole; a toothed ring having a ring body coaxially aligned with the fixing thread hole, a first end of the toothed ring extending into the first opening of the main body, a second end of the toothed ring extending out from the main body, a first thread being formed on an outer circumference of the first end of the ring body inside the main body for coaxially screwing into the fixing thread hole, a second thread being formed on an outer circumference of the second end of the ring body outside the first opening of the main body; an operating end piece having a connecting end with a predetermined outer diameter; and an adjustment threaded bush, one end of the adjustment threaded bush being coaxially screwed with the second thread of the toothed ring, the other end of the adjustment threaded bush being connected with the connecting end of the operating end piece, whereby the operating end piece is connected with the toothed ring.