| 摘要 |
A piezoelectric valve is provided to reduce power consumption compared to conventional solenoids and obtain rapid and precise response while reducing manufacturing cost. In a piezoelectric valve, an internal hole(19) is formed in a valve body(11) so that piezoelectric actuators(17a,17b) can be opposite to each other. Armatures(16a,16b) are slid by a guide(13) provided at the tip ends of the inner sides of the inserted piezoelectric actuators. A bolt(15b) and a connector(18) are engaged with the valve body. The bolt sets a displacement expanding space at the tip ends of the outer sides of the piezoelectric actuators. The connector is adapted to apply a voltage. One side of the valve body is engaged with a valve seat and the bolt. The armatures are vertically moved by the displacement difference of the piezoelectric actuators. A ground area(21) is provided at one end of the armature. The shape of one side of the ground section of the armature is concave and the shape of the other side of the ground section is convex.
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