| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor safety valve in which a valve shaft wear resistance is improved even if an armature is connected to the valve shaft in a floating state, and the armature is not dropped out of the valve shaft. Ž<P>SOLUTION: The motor safety valve includes the armature 17 connected to the valve shaft 8a of a valve element in a floating state tiltably within a predetermined angle range, and an electromagnet which attracts the armature, and is advanced and retracted by the motor. In an armature structure, let a direction from a valve chamber to a valve port be a lower side, and a direction from the valve port to the valve chamber be an upper side, a see-through hole 17a with a stepped shape having a large diameter in the upper side and a small diameter in the lower side is formed in the armature. A head of a pin member 16 having the head 16a at an upper end, which is expanded to such a diameter that is smaller than that of the large diameter part 171 of the see-through port and larger than that of the small diameter part 172 of the see-through hole, is deeply inserted into the large diameter part, and a gap G3 is provided between the lower face of the head and the lower face of the small diameter part. The part of the pin member lower than the head is loosely inserted into the small diameter part having a gap G2. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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