Displacement magnifying mechanism, actuator, polishing device, electronic component processing apparatus, dispenser, and air valve

A polishing device comprising:

• a base portion adapted for serving as a base;
• a piezoelectric element of which an end portion is attached to a mounting surface of the base portion, the piezoelectric element extending along a first longitudinal direction;
• a support member of which an end portion is attached to the mounting surface side by side with the piezoelectric element, the support member extending along a second longitudinal direction which intersects with the first longitudinal direction;
• an operating portion attached to each of other end portions of the piezoelectric element and the support member to allow the operating portion to be displaced, in response to an expansion/contraction of the piezoelectric element, along a displacement direction which differs from both the first longitudinal direction and the second longitudinal direction;
• a compression member attached to each of the base portion and the operating portion so as to compress the piezoelectric element along the first longitudinal direction;
• and
• a polishing portion provided on a surface of the operating portion opposite to a surface to which the piezoelectric element and the support member are attached,
• wherein the first longitudinal direction and the second longitudinal direction intersect at a side of the operating portion, and
• wherein the compression member is disposed outside of a space surrounded by the piezoelectric element, the support member and the base portion.

An actuator comprising:

• a base portion adapted for serving as a base;
• a piezoelectric element of which an end portion is attached to a mounting surface of the base portion, the piezoelectric element extending along a first longitudinal direction;
• a support member of which an end portion is attached to the mounting surface side by side with the piezoelectric element, the support member extending along a second longitudinal direction which intersects with the first longitudinal direction;
• an operating portion attached to each of other end portions of the piezoelectric element and the support member to allow the operating portion to be displaced, in response to an expansion/contraction of the piezoelectric element, along a displacement direction which differs from both the first longitudinal direction and the second longitudinal direction;
• a compression member attached to each of the base portion and the operating portion so as to compress the piezoelectric element along the first longitudinal direction;
• and
• a driver for supplying a voltage or a current to the piezoelectric element and the support member so as to generate an expansion/contraction of the piezoelectric element,
• wherein the first longitudinal direction and the second longitudinal direction intersect at a side of the operating portion, and
• wherein the compression member is disposed outside of a space surrounded by the piezoelectric element, the support member and the base portion.