Patent ID: 7896336

Claim:
A solenoid valve with reduced collision noise, said solenoid valve comprising: a valve body comprising: a magnetic coil enclosing said valve body; and a recess comprising a recess sidewall, a recess bottom and a recess inner wall, wherein said recess inner wall is arranged between said recess sidewall and said recess bottom, a first included angle is defined between said recess inner wall and said recess sidewall, and a second included angle is defined between said recess inner wall and said recess bottom; a valve spindle partially inserted into said recess of said valve body and movable toward said recess bottom along said recess sidewall, wherein said valve spindle comprises a tip part at a first end and a protruding edge at a second end; a spring sheathed around said valve spindle, and contacted with said protruding edge and said valve body; a ring-shaped groove sheathed around said valve spindle and arranged at a bottom of said tip part; and a muffling ring disposed within said ring-shaped groove, wherein when said valve body is magnetized to magnetically attract said valve spindle, said valve spindle is moved in said recess and toward said recess bottom, said spring is compressed by said protruding edge, and said muffling ring collides with said recess inner wall, thereby buffering collision between said tip part and said recess bottom.