| 摘要 |
PROBLEM TO BE SOLVED: To provide a solenoid valve capable of preventing the control characteristics from lowering. SOLUTION: The base end of a nozzle 12 and a solenoid 13 are stored in a casing 11 of a solenoid valve 1 and the solenoid 13 is constituted of a bobbin 14 and a coil 15. A plunger 17 is stored in a plunger storage chamber 16 in the side the bobbin 14 and a vertical groove 18 communicating the upper space 19 with a lower space 20 is formed in the side of the plunger 17. The bobbin 14 is integrally molded with a yoke 33 and a core 32 by resin. An insertion hole 54 is provided in the center of the core 32 and an attraction face 55 is formed around the circumference of the insertion hole 54. A valve chest 81 in which an extension bar 21 of the plunger 17 is inserted, an input port 82, and a drain port 83 are formed in the nozzle. A communication hole 91 communicating the valve chest 81 with the upper space 19 is formed in the extension bar 21 and an introduction path 94 introducing oil in the valve chest 8 to the lower space 20 is formed by the communication hole 91 and the vertical groove 18.
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