Code wheel fixing structure with function of preventing motor bearing from discharging electricity to ground

The invention discloses a code wheel fixing structure with the function of preventing a motor bearing from discharging electricity to the ground. The structure comprises a base and a brush carrier mechanism, wherein the base is a structure with two coaxial convex discs; a through hole is formed in the center of the base; one of the two convex discs, which is at one end of the base, is a code wheelfixing shaft mounting seat; the other end of the base is a code wheel mounting position; the outer diameter of the convex disk at the middle part of the base is a carbon brush and code wheel shaft contact position; fixing screw through holes are respectively formed in the two convex discs; the brush carrier mechanism comprises a brush carrier fixing rod fixed at the non-load end of a motor and agrounded carbon brush carrier fixed at the brush carrier fixing rod; and grounded carbon brushes are connected with the carbon brush and code wheel shaft contact position. The structure disclosed by the invention has the advan