| 摘要 |
PROBLEM TO BE SOLVED: To provide highly accurate resin components of a three-way type solenoid valve for AT or CVT capable of dispensing with insert forming of a metal component strictly managing its dimension by making use of an accurate mold in order to organize a hydraulic switching section and reducing costs. SOLUTION: In resin components of a three-way type solenoid valve for AT or CVT including a ball 4, a resin body 1, and a plunger 2, a first ball seat 5 connectable with the ball 4 in advance or a plunger seat 3 connectable with the plunger 2 is formed by injection-molding in which its dimension is approximately 0.005 mm greater than a desired dimension. An actual ball moving amount S is measured in an assembling state of the ball 4, the resin body 1, and the plunger 2 after injection molding, and a difference with the desired dimension is detected. The first ball seat 5 or the plunger seat 3 is recessed with thermal deformation by pushing a heated punch 6 or 8 by a difference with the desired dimension by making use of the heated punch 6 or 8. COPYRIGHT: (C)2005,JPO&NCIPI
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