Abstract: A vibration presentation device includes: an electrostatic or piezoelectric actuator; a first elastic body laminated on the actuator; a second elastic body laminated on the actuator on the opposite side to the first elastic body; an electrostatic or piezoelectric sensor disposed around the actuator; a cover that holds the first elastic body and the second elastic body such that the first elastic body and the second elastic body are compressed more than the actuator, the cover transmitting, when a pressing force in the laminate direction is applied to the cover from the outside, the pressing force to a sensor, and vibrating by vibration generated by the actuator; and a control device that drives the actuator when the sensor detects the pressing force.

Abstract: A control circuit includes: a voltage output circuit control unit that controls a voltage output circuit so as to apply a voltage, which corresponds to an output control signal and is to cause an electrostatic transducer to generate vibration, sound, or pressure, between both ends of the electrostatic transducer in a case where a detection control signal is at a first level, and that stops the voltage output circuit in a case where the detection control signal is at a second level; a pulse signal output unit that outputs a pulse signal, which is to cause the electrostatic transducer to detect vibration, sound, or pressure, to a terminal on a high potential side of the electrostatic transducer via a diode; and a voltage clamp unit that outputs a clamp voltage acquired by clamping of a voltage between the terminals of the electrostatic transducer to a predetermined voltage or lower.

Abstract: A transducer device having a configuration capable of expanding the utilization is provided. A transducer device includes a transducer element, elastic bodies sandwiching the transducer element from two sides and having an elastic modulus smaller than that of the transducer element in a sandwiching direction, a case including an accommodating part for accommodating a transducer unit and having an opening, and an elastic plate member including a support part supported by the case, a facing surface part positioned at the opening of the case and facing the transducer unit, and an elastic deformation part connecting the support part and the facing surface part.

Abstract: To provide a tactile vibration applying device that efficiently outputs vibrations using an electrostatic or piezoelectric actuator. The tactile vibration applying device includes the electrostatic or piezoelectric actuator formed in a flat shape, and expanding and contracting in a thickness direction, a first elastic body having an elastic modulus smaller than an elastic modulus of the actuator in the thickness direction and disposed to contact a surface of the actuator on a side of the first electrode, and a first cover covering a surface of the first elastic body opposite to a surface of the first elastic body contacting the actuator, pressing the actuator and the first elastic body in the thickness direction of the actuator, and holding the first elastic body in a state that the first elastic body is compressed more than the actuator.

Abstract: Provided is an electrostatic transducer (1) in which an electrostatic unit (10) is formed so as to be flat and wound into a roll, from a first laminate sheet (110) and a second laminate sheet (120). The first laminate sheet (110) is provided with a first electrode sheet (111) and two first dielectric sheets (112, 113) laminated onto both surfaces of the first electrode sheet (111). The second laminate sheet (120) is provided with a second electrode sheet (121) and two second dielectric sheets (122, 123) laminated onto both surfaces of the second electrode sheet (121).

Abstract: A vibration presentation device includes: an electrostatic or piezoelectric actuator; a first elastic body laminated on the actuator; a second elastic body laminated on the actuator on the opposite side to the first elastic body; an electrostatic or piezoelectric sensor disposed around the actuator; a cover that holds the first elastic body and the second elastic body such that the first elastic body and the second elastic body are compressed more than the actuator, the cover transmitting, when a pressing force in the laminate direction is applied to the cover from the outside, the pressing force to a sensor, and vibrating by vibration generated by the actuator; and a control device that drives the actuator when the sensor detects the pressing force.

Abstract: Provided is an electrostatic transducer which is small in size and has a large electrostatic capacitance, while having a durable constituent part of a conduction path, said constituent part being connected to an electrode. This electrostatic transducer is provided with a plurality of first electrode sheets, a plurality of second electrode sheets and a plurality of dielectric sheets. Each one of the plurality of first electrode sheets is provided with a first counter electrode part and a first terminal electrode part. Each one of the plurality of second electrode sheets is provided with a second counter electrode part and a second terminal electrode part. Each one of the plurality of dielectric sheets is provided with a dielectric main body, a first extending part that is interposed between a plurality of first terminal electrode parts, and a second extending part that is interposed between a plurality of second terminal electrode parts.

Abstract: Provided is an electrostatic transducer (1) in which an electrostatic unit (10) is formed so as to be flat and wound into a roll, from a first laminate sheet (110) and a second laminate sheet (120). The first laminate sheet (110) is provided with a first electrode sheet (111) and two first dielectric sheets (112, 113) laminated onto both surfaces of the first electrode sheet (111). The second laminate sheet (120) is provided with a second electrode sheet (121) and two second dielectric sheets (122, 123) laminated onto both surfaces of the second electrode sheet (121).

Abstract: To provide a tactile vibration applying device that efficiently outputs vibrations using an electrostatic or piezoelectric actuator. The tactile vibration applying device includes the electrostatic or piezoelectric actuator formed in a flat shape, and expanding and contracting in a thickness direction, a first elastic body having an elastic modulus smaller than an elastic modulus of the actuator in the thickness direction and disposed to contact a surface of the actuator on a side of the first electrode, and a first cover covering a surface of the first elastic body opposite to a surface of the first elastic body contacting the actuator, pressing the actuator and the first elastic body in the thickness direction of the actuator, and holding the first elastic body in a state that the first elastic body is compressed more than the actuator.