| 摘要 |
PROBLEM TO BE SOLVED: To smoothly displace a shaft member in the axial direction by sufficiently securing the axial length of a retainer supporting the shaft member of a proportional solenoid valve to reduce the radial clearance of the retainer. SOLUTION: In a bearing 53, a plurality of, for example, six (not shown) spherical holes 45 are bored in a cylindrical retainer 56 at a roughly axial center position, and balls 57 are rotatably supported on the holes 45. When the axial length of the retainer 56 is set to at least one to two times the inner diameter of the retainer 56, and the wall thickness of the retainer 56 is set to at least 0.6 to 0.9 times the diameter of the balls 57, the axial length can be sufficiently secured and the radial clearance of a rod 54 is reduced, and a plane passing the center of the balls 57 can be positioned vertically to the axial direction. COPYRIGHT: (C)2006,JPO&NCIPI
|
