JP2002354853A5 - - Google Patents

Claims (16)

A diaphragm in which at least one end is displaced in the in-plane direction as a movable end for transmitting displacement by vibration, an excitation means for causing the diaphragm to vibrate, and a connection to the movable end connected to the movable end A vibration output system that amplifies and outputs the displacement in the in-plane direction of the portion as vibration in the in-plane direction;
The excitation means includes a piezoelectric element configured on at least one surface of the diaphragm, and a drive circuit for the piezoelectric element,
The actuator in which the displacement in the in-plane direction of the connecting portion with the movable end is a vibration displacement in the in-plane direction accompanying the longitudinal vibration of the diaphragm.   2. The actuator according to claim 1, wherein the diaphragm includes the movable end connected to the vibration output system only at one end, and the other end is a fixed end.   2. The diaphragm according to claim 1, wherein the diaphragm includes the movable ends at both ends, and the vibration output systems are connected to the movable ends at both ends as a first vibration output system and a second vibration output system, respectively. An actuator characterized by that.   2. The actuator according to claim 1, wherein the diaphragm includes the movable end connected to the vibration output system only at one end, and the other end is a free end.   2. The apparatus according to claim 1, further comprising disturbance monitoring means for detecting that the vibration output system vibrates due to a disturbance based on an electromotive force generated in the piezoelectric element when the vibration plate vibrates due to the vibration. An actuator characterized by.   6. The output circuit according to claim 5, further comprising an output circuit that outputs an electromotive force generated in the piezoelectric element when the vibration output system vibrates due to a disturbance and the vibration is transmitted to the diaphragm. Actuator. 7. The vibration output system according to claim 1, wherein the vibration output system includes a lever having a proximal end connected to a movable end of the diaphragm, a distal end being a free end, and an elastic supporting the proximal end of the lever. With
The diaphragm includes the movable end connected to the lever at only one end, the other end is a free end, and the diaphragm and the lever are supported only by the elastic portion. The actuator further comprises a pressure spring that presses the vibration output end of the lever against the driven member.   8. The pressure spring according to claim 7, wherein the pressure spring and the lever are formed integrally with a plate-like member, and the plate-like member is capable of rotating in a plane between the pressure spring and the lever. The actuator is supported, and the vibration output end of the lever is pressed against the driven member by the pressure spring by positioning the end of the pressure spring.   The actuator according to claim 7, wherein the elastic portion is configured as a constricted portion of a plate-like member disposed in a plane with respect to the diaphragm.   In any one of Claims 7-9, the said lever is in ratio with the dimension from the said elastic part to the connection position with the movable end of the said diaphragm, and the dimension from the said elastic part to the vibration output end of the said lever. An actuator for amplifying and outputting a displacement in an in-plane direction of a connecting portion of the diaphragm with a corresponding lever ratio.   11. The lever according to claim 7, wherein the lever amplifies the displacement in the in-plane direction of the connection portion with the movable end of the diaphragm by performing resonance vibration that is bent in the in-plane direction of the lever. An actuator characterized by output.   12. The excitation device according to claim 1, wherein the excitation means has a first vibration having a first vibration frequency and a second vibration having a frequency different from the first vibration frequency with respect to the diaphragm. An actuator configured to cause a second vibration having a frequency.   12. The excitation means according to claim 11, wherein the excitation means performs the first vibration at a resonance frequency of a vibration system including the diaphragm and the second vibration at a frequency corresponding to a higher-order resonance frequency of the resonance frequency. An actuator configured to cause the diaphragm to perform.   A timepiece using the actuator defined in any one of claims 1 to 11 as a driving device of a display mechanism.   4. A notification device using an actuator defined in claim 3, wherein the notification device performs notification by at least the first vibration.   13. A notification device using an actuator as defined in any one of claims 3, 11, and 12, wherein a sensory vibration is generated by the first vibration and an audible sound is generated by the second vibration. A notification device.