Patent ID: 6557781
Filing Date: 2003-05-06
Classification: B05B

Abstract:
A rotary atomizing head including a main body formed in a bell or tubular shape and having on the rear side a rotational shaft mount portion and on the front side a paint spreading surface extending toward marginal paint releasing edges for spreading paint into the form of a thin film and a paint reservoir provided in a receded deep portion of the main body, and a hub member fitted in an inner peripheral surface of said main body in such a way as to cover up front side of said paint reservoir, characterized in that:said main body is provided with a hub fitting groove around said inner peripheral surface between said paint reservoir and said paint spreading surface; said hub member is constituted by a lid portion of a circular disc-like shape having an outside diameter smaller than inside diameter of said inner peripheral surface on the side of said main body, a plural number of leg portions projected axially rearward from said lid portion and having distal end portions adapted to be brought into and out of engagement with said hub fitting groove through resilient deformation, and a plural number of notched grooves each provided between adjacent leg portions; and a plural number of channel-like paint passages are formed by and between said hub fitting groove and said notched grooves when said leg portions of said hub member are fitted in said hub fitting groove, and at the same time an annular paint passage is formed between said inner peripheral surface of said main body and circumferential surface of said lid portion.