Piezoelectric actuator set for head assembly

A head assembly comprising:

• a support member;
• a head slider;
• and
• a piezoelectric actuator set disposed between the support member and the head slider for establishing a standard attitude of the head slider when supply of an electric signal is cut off, said piezoelectric actuator set including:
• a first elongated piezoelectric actuator extending in a first direction, a base end of the first elongated piezoelectric actuator being attached to the support member, a tip end of the first elongated piezoelectric actuator being attached to the head slider;
• and
• a second elongated piezoelectric actuator extending in a second direction antiparallel to the first direction, a base end of the second elongated piezoelectric actuator being attached to the support member, a tip end of the second elongated piezoelectric actuator being attached to the head slider, wherein said piezoelectric actuator set generates a couple changing an attitude of the head slider around a rotational axis only in a predetermined direction.

A recording medium drive comprising:

• a swinging arm;
• a head suspension extending forward from a front end of the swinging arm;
• a head slider;
• and
• a piezoelectric actuator set disposed between the head suspension and the head slider for establishing a standard attitude of the head slider when supply of an electric signal is cut off, said piezoelectric actuator set including:
• a first elongated piezoelectric actuator shrinking in a first direction upon supply of the electric signal;
• and
• a second elongated piezoelectric actuator shrinking in a second direction, antiparallel to the first direction, upon supply of the electric signal,
• wherein said piezoelectric actuator set generates a couple changing an attitude of the head slider around a rotational axis only in a predetermined direction.

A recording medium drive comprising:

• a head suspension extending forward from a front end of the swinging arm;
• a head slider;
• and
• a piezoelectric actuator set disposed between the head suspension and the head slider for establishing a standard attitude of the head slider when supply of an electric signal is cut off, said piezoelectric actuator set including:
• a first elongated piezoelectric actuator extending in a first direction, a base end of the first elongated piezoelectric actuator being attached to the head suspension, a tip end of the first elongated piezoelectric actuator being attached to the head slider;
• and
• a second elongated piezoelectric actuator extending in a second direction antiparallel to the first direction, a base end of the second elongated piezoelectric actuator being attached to the head suspension, a tip end of the second elongated piezoelectric actuator being attached to the head slider,
• wherein said piezoelectric actuator set generates a couple changing an attitude of the head slider around a rotational axis only in a predetermined direction.