CASE FOR SURFACE MOUNT PART, SURFACE MOUNT ELECTRONIC PART AND MANUFACTURING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To prevent generation of a weld line and distortion when molding a case. SOLUTION: A case 20 for a surface mount part is molded by a resin injection in a mold cavity, and used for housing an electronic part element. A gate port 39 is arranged between a place separated at a distance of the quarter of the overall length of the case from one end in the case longitudinal direction and a place separated at a distance of one over three of the overall length of the case from one end. A beltlike thick section 41 extended in the case longitudinal direction is formed to a top plate 30. Grooves 42 extending in the height direction are formed to a side wall 31.A chamfering section is formed at a case-inside corner partitioned by the internal surface of the top plate and the internal surface of the side wall. The chamfering section is formed at the case-inside corner partitioned by the internal surface of an end wall positioned far from the gate port and the internal surface of the case top plate. COPYRIGHT: (C)2004,JPO&NCIPI