Patent ID: 9377123
Filing Date: 2016-06-28
CPC Classification: F16K,Y10T

Claim Text:
1. A solenoid valve comprising: a valve main body which has a valve chamber communicating with each of an inlet port and a first outlet port; a valve body which is arranged within said valve chamber; a valve holder which retains said valve body and is made of a magnetic material; an energizing member which energizes said valve holder in a direction of said first outlet port; a pipe member which has a second outlet port communicating with said valve chamber and is extended upward from said valve chamber; a suction element which is formed in a cylindrical shape and surrounds said pipe member, such that said pipe member is inside said suction element, wherein said suction element is configured to be separated from a fluid flow passing through said solenoid valve; a coil bobbin which surrounds said valve holder and said suction element; an electromagnetic coil, wherein said electromagnetic coil is wound around said coil bobbin; and a mold cover which surrounds a whole of said coil bobbin, is integrated with said valve main body and defines said valve chamber by said valve main body, said pipe member and said coil bobbin, wherein said valve main body, said pipe member, said coil bobbin and said mold cover are formed by a resin material, wherein said suction element is made of a magnetic metal, wherein said valve holder is slidably arranged inside a lower portion of said coil bobbin, and has a tube body which faces to said suction element, a fluid insertion hole which is pierced in said tube body, and a retention portion which retains said valve body, wherein when said electromagnetic coil is excited, said valve holder is sucked by said suction element and said valve body closes said second outlet port of said pipe member, wherein when said electromagnetic coil is not excited, said valve holder is energized by said energizing member and said valve body closes said first outlet port, wherein said coil bobbin is provided with a collar wall which faces to said valve main body, and an annular welding projection portion which protrudes toward said valve main body from said collar wall and is welded to an inner peripheral surface of said mold cover, wherein said annular welding projection portion is provided with a tapered surface, wherein the diameter of said tapered surface is reduced from an inner peripheral surface in a leading end side of said annular welding projection portion toward an inner peripheral surface in a base side of said annular welding projection portion, and a burr accommodating space which is constructed between said tapered surface and an outer peripheral surface of said valve holder, and wherein said annular welding projection portion accommodates in said burr accommodating space a burr which is generated in a bonded surface between said annular welding projection portion and the inner peripheral surface of said mold cover when said mold cover is resin molded in said coil bobbin so as to keep clearance.