Patent ID: 10830332

Abstract:
An object of the present invention is to provide a small-size reduction gearbox, which has a smaller size and reliable sealing without oil leakage. A small-size reduction gearbox is provided, comprising an involute gear and a driven gear assembly linked with the involute gear; the involute gear at least comprises a first fixation segment, an engagement segment, a transition segment and a second fixation segment, the engagement segment is located between the transition segment and the first fixation segment, the transition segment is located between the second fixation segment and the engagement segment, and the involute gear is processed by hobbing to obtain the engagement segment and the transition segment; the first fixation segment is fixed to a box body via a first bearing, a bushing is fixedly sheathed on the involute gear, the bushing consists of a first bushing portion and a second bushing portion, the first bushing portion has an outer diameter greater than that of the second bushing portion, the first bushing portion is sheathed on the transition segment and the second bushing portion is sheathed on the second fixation segment, and a second bearing is sheathed on the second bushing portion.