An electromechanical motor (1) comprises a stator (2) and a translator (10). The stator has two electromechanical actuators (20) having electromechanically active material (26) and means (35) for providing exciting signals. The translator is arranged between, and in driving contact with, driving portions (22) of the electromechanical actuators. The stator has a spring element (30) arranged for holding the driving portions against the translator. The electromechanical actuators are arranged for providing a vibration, which gives rise to a driving action, directed in a driving direction (X) perpendicular to the direction of the normal force, against the surface of the translator. The electromechanical motor further comprises a guiding means (50) having a circular hole (52). The translator has a cylindrically shaped guidance part (16) arranged at least partly in the circular hole. A tunable high-frequency filter comprising such a motor is also disclosed.

An electromechanical motor (1) comprises a stator (2) and a translator (10). The stator has two electromechanical actuators (20) having electromechanically active material (26) and means (35) for providing exciting signals. The translator is arranged between, and in driving contact with, driving portions (22) of the electromechanical actuators. The stator has a spring element (30) arranged for holding the driving portions against the translator. The electromechanical actuators are arranged for providing a vibration, which gives rise to a driving action, directed in a driving direction (X) perpendicular to the direction of the normal force, against the surface of the translator. The electromechanical motor further comprises a guiding means (50) having a circular hole (52). The translator has a cylindrically shaped guidance part (16) arranged at least partly in the circular hole. A tunable high-frequency filter comprising such a motor is also disclosed.

An actuator that includes: a first driving body that includes a first piezoelectric material that extends in a first axis direction; a second driving body that includes a second piezoelectric material shorter than the first piezoelectric material in the first axis direction; and a base that holds the first driving body and the second driving body at proximal end portions of the first driving body and the second driving body in the first axis direction. The first driving body and the second driving body are aligned and coupled together in a polarization axis direction in a state in which a polarization axis of the first piezoelectric material and a polarization axis of the second piezoelectric material correspond with each other. A length of the second piezoelectric material in a second axis direction is greater than a length of the first piezoelectric material in the second axis direction.

A vibrating device includes a first case, a second case joined to the first case, flexible bodies each including a free end, piezoelectric elements attached to the respective flexible bodies, and a mass joined to the flexible bodies. The first case has a flat plate shape. The second case includes a bottom and a lateral wall. The vibrating device further includes holder in contact with the first case, the lateral wall, and the bottom.

A piezoelectric actuator includes a piezoelectric element having a longitudinal direction, a case including a lid portion, a bottom portion, and a tubular portion and housing the piezoelectric element inside, and a strain gauge positioned at the tubular portion. The tubular portion includes a plurality of bent portions in the longitudinal direction, each of the plurality of bent portions bending in response to extension and contraction of the piezoelectric element. The strain gauge is positioned at the bent portion.

Provided is an actuator including a piezoelectric element capable of satisfying three of a large amplitude, a high resonance frequency, and a large generated force. Actuator (100) is a drive source having a cantilever structure in which one end is a fixed end and the other end is displaced, and includes first piezoelectric body (110), second piezoelectric body (120), and shim member base (130) disposed between first piezoelectric body (110) and second piezoelectric body (120). In first piezoelectric body (110) and second piezoelectric body (120), piezoelectric body removal parts (110a) and (120a) are formed.

A device (100) for the excitation of a fiber (150) comprises a first piezo bender actuator (110) and a second piezo bender actuator (120). The device (100) also comprises a connection part (130) which is arranged between the first piezo bender actuator (110) and the second piezo bender actuator (120). The device (100) also comprises a movable fiber (150) which is mounted to the connection part (130).

The present disclosure relates to a piezoelectric device, and more particularly, to a piezoelectric device including: a piezoelectric actuator; a displacement transmission structure disposed on the piezoelectric actuator; and a displacement amplification structure disposed between the piezoelectric actuator and the displacement transmission structure. Here, the displacement amplification structure includes: a first displacement amplification structure and a second displacement amplification structure, which cross each other; and a fixing pin that passes through the first displacement amplification structure and the second displacement amplification structure to connect the first displacement amplification structure and the second displacement amplification structure. Also, each of one end of the first displacement amplification structure and one end of the second displacement amplification structure may be fixed on the piezoelectric actuator.

An actuator includes a piezoelectric element, a vibration plate, and a support. The vibration plate has the piezoelectric element joined thereto and vibrates in accordance with displacement of the piezoelectric element. The support supports the vibration plate. A holder is disposed on the vibration plate. The holder is configured to join the vibration plate to an object of vibration. The vibration plate and the support are integrally molded.

An actuator includes a piezoelectric element, a vibration plate, and a support. The vibration plate has the piezoelectric element joined thereto and vibrates in accordance with displacement of the piezoelectric element. The support supports the vibration plate. A holder is disposed on the vibration plate. The holder is configured to join the vibration plate to an object of vibration. The vibration plate and the support are integrally molded.