Power transmission apparatus and manufacturing method therefor

Abstract

A power transmission apparatus and a manufacturing method thereof are disclosed. A power transmission apparatus according to an embodiment of the inventive concept includes: a circular rack to which a motor generating power is connected to form an input shaft; a pair of upper pinions gear-engaged with both sides of the circular rack, configured to adjust an assembly distance from the circular rack through a predetermined pinion assembly distance adjuster, and decelerating power received from the circular rack by a reduction ratio of a built-in deceleration structure and transferring decelerated power; a pair of lower pinions respectively one-to-one connected to the pair of upper pinions, and decelerating the power received from the upper pinion by a reduction ratio of a built-in deceleration structure and transferring decelerated power; and a rack/pinion fixing plate to which the circular rack is fixed and to which the pair of upper pinions and the pair of lower pinions are assembled to be movable and fixed.

Dependencies are inferred from the claim text.