| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure controller for reducing costs while preventing malfunction of a pressure adjustment screw. SOLUTION: A motor M is configured of a stepping motor 17, and a drive shaft 17a of the stepping motor 17 is directly connected to a pressure adjustment screw 3, and the torque of the stepping motor 17 is directly transmitted to a pressure adjustment spring 3. A control unit 4 is configured so as to be freely switched to a normal control state where in a normal operation state where any manual operation is not performed, a power is supplied to the stepping motor 17, and where the stepping motor 17 is operated in an excitation state and a non-control state where in a manual operation state where a manual operation is performed, power supply to the stepping motor 17 is stopped, and where the rotation of the stepping motor 17 is permitted in a non-excitation state. This pressure controller is provided with a control switching means 20 for switching the control state of the control unit 4 to the normal control state and the non-control state. COPYRIGHT: (C)2011,JPO&INPIT
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