| 摘要 |
PROBLEM TO BE SOLVED: To provide a solenoid valve steering device, which facilitates measurement of a tapered shape provided on a spool to reduce sliding resistance. SOLUTION: A second land part 82 which controls communication between a supply port 76 (high-pressure port) formed in a valve sleeve 70 and a feedback port 78 (low-pressure port) includes a tapered part 92 extended in diameter in a tapered shape from the high-pressure port toward the low-pressure port; a small-diameter part 93 formed on the high-pressure port-side end part of the tapered part 92 in an integrated manner and having a diameter equal to the outer diameter of the high-pressure port-side end part; and a large-diameter part 94 formed on the low-pressure port-side end part of the tapered part 92 in an integrated manner and having an outer diameter equal to the low-pressure port-side end part. COPYRIGHT: (C)2010,JPO&INPIT
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