Electromagnetic fluid control valve

A method for assembling an electromagnetic fluid control valve,

• said electromagnetic valve comprising:
• an electromagnetic actuator having a movable member slidable in an axial direction of said electromagnetic fluid control valve;
• a valve body having an accommodation chamber storing said electromagnetic actuator, a fluid passage in which fluid flows, and a valve opening formed in at an appropriate portion of said fluid passage;
• a diaphragm airtightly separating an inside space of said valve body into said fluid passage and said accommodation chamber;
• a shaft extending in the axial direction through said valve opening and being integrally shiftable with said movable member in the axial direction, said shaft having a flange at one axial end thereof which is capable of passing through said valve opening;
• a valve member coupled around said shaft at said one axial end for closing said valve opening when said valve member is brought into contact with a valve seat formed around said valve opening and for opening said valve opening when said valve member lifts off said valve seat;
• a retainer coupled around said shaft at a portion axially offset from said valve member, said retainer being capable of passing through said valve opening;
• a first retaining portion provided at one axial end of said retainer, with said valve member sandwiched between said flange of said shaft and said first retaining portion of said retainer;
• and
• a second retaining portion provided at the other axial end of said retainer, with said diaphragm sandwiched between said movable member of said electromagnetic actuator and said second retaining portion of said retainer,
• said assembling method comprising:
• a first step of coupling said valve member around one axial end of said shaft by inserting said other axial end of said shaft into an engagement hole of said valve member;
• a second step of combining said valve body with said shaft by inserting said other axial end of said shaft into said valve opening of said valve body so that said shaft extends through said valve opening of said valve body;
• a third step of coupling said retainer around said shaft by inserting said other axial end of said shaft into an engagement hole of said retainer;
• a fourth step of coupling said diaphragm around said shaft by inserting said other axial end of said shaft into an engagement hole of said diaphragm;
• and
• a fifth step of coupling said movable member of said electromagnetic actuator around the other axial end of said shaft by inserting said other axial end of said shaft into an engagement hole of said movable member.