| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To facilitate installation and replacement of a diaphragm to the top end portion of the spindle of a movable iron core. <P>SOLUTION: This invention includes an operation part 113 to be operated at the time of an attachment or detachment operation of a diaphragm with respect to the spindle of an iron core, and a control means 114 for maintaining the state of the spindle of the movable iron core by advancing the same by supplying electric current to a solenoid for a predetermined time on the basis of the operation of the operation part 113. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
