Patent application number | Description | Published |
20110121685 | Piezoelectric Generator - A piezoelectric generator that includes a piezoelectric element having first and second surfaces on which a first electrode and a second electrode are disposed. A vibrating plate is bonded to the piezoelectric element such that the first surface is adjacent thereto. The vibrating plate includes a first bend disposed at a first side of a vibrating-plate main section to which the piezoelectric element is bonded and a second bend disposed at a second side thereof. A support member supports the vibrating plate at a location outside the first and second bends. A vibration body including the vibrating-plate main section and the piezoelectric element is supported at both ends. | 05-26-2011 |
20110148256 | Piezoelectric Power Generator - A piezoelectric power generator that includes a support body, a piezoelectric element, and a bias compressive stress applying member. The piezoelectric element is placed on the support body. The piezoelectric element has a piezoelectric plate that is polarized in the thickness direction, and first and second electrodes that are each provided on a surface of the piezoelectric plate. The bias compressive stress applying member is supported on the side above the piezoelectric element by the support body. The bias compressive stress applying member applies to the piezoelectric element a bias compressive stress acting in the thickness direction of the piezoelectric plate, so that the magnitude of a compressive stress in the piezoelectric plate changes with a change in externally applied stress. | 06-23-2011 |
20110284656 | Amazing Member and Atomizer Including the Same - An atomizing member that includes a piezoelectric vibrator and a vibrating membrane. The piezoelectric vibrator includes a cylindrical piezoelectric body, a first electrode disposed on an inner circumferential surface of the piezoelectric body, and a second electrode disposed on an outer circumferential surface of the piezoelectric body. The piezoelectric vibrator performs cylindrical breathing vibration. The vibrating membrane is disposed on an opening at a first side in an axial direction of the piezoelectric body so as to cover the opening. The vibrating membrane has a through hole in its central portion. | 11-24-2011 |
20130181578 | Piezoelectric Power Generator - A piezoelectric power generator that includes a first elastic body, which deforms along a first direction x upon receiving a stress, and a piezoelectric power-generating element. A second elastic body is arranged on a y1 side of the first elastic body and a piezoelectric element is fixed to a y1-side surface of the second elastic body. When the first elastic body bends into a shape that is concave toward the y1 side, the second elastic body receives a stress from the first elastic body. When the first elastic body bends into a shape that is convex toward the y1 side, the second elastic body does not receive a stress from the first elastic body. The piezoelectric power generator further includes a vibration suppressing member that is arranged between the first elastic body and the second elastic body and suppresses bending mode vibration of the second elastic body. | 07-18-2013 |
20130249350 | PIEZOELECTRIC POWER GENERATING DEVICE AND MANUFACTURING METHOD THEREOF - A piezoelectric power generating device is provided which is capable of extracting a large amount of power without an increase in device size, even when applied with vibration of low frequency or weak external force, and which is easy to manufacture. | 09-26-2013 |
20130293069 | PIEZOELECTRIC POWER GENERATING APPARATUS - To achieve a piezoelectric power generating apparatus that is capable of both decreasing the natural vibration frequency and reducing the size and that has high power generation efficiency. A piezoelectric power generating apparatus including a power generating element having one end fixed to a supporting member and another end being a free end, and an excitation weight connected to the free end of the power generating element. The power generating element includes a vibration plate that is formed into a shape in which the vibration plate is folded back on the same plane between the one end and the other end and that includes multiple arm portions extending in parallel to each other. In addition, piezoelectric elements bonded to each arm portion of the vibration plate. | 11-07-2013 |
20140090470 | VIBRATOR AND VIBRATING GYROSCOPE - A vibrator in a vibrating gyroscope includes a circular annular portion, a rectangular annular portion, and joining portions. The rectangular annular portion is disposed adjacent to an outer side of the circular annular portion. The joining portions join the circular annular portion and the rectangular annular portion. The rectangular annular portion includes linear beam portions. The joining portions join the circular annular portion and the center portions of the beam portions to each other. | 04-03-2014 |
20140116188 | VIBRATOR AND VIBRATING GYROSCOPE - A vibrator includes first and second circular or substantially circular arc-shaped beam portions, a base end-side weight portion, and a base end-side weight portion joining portion. The end portions of the first and second circular or substantially circular arc-shaped beam portions in an X-axis positive direction face each other across a distance in a Y-axis direction, and the end portions thereof in an X-axis negative direction are joined to each other. The base end-side weight portion is disposed between the first and second circular or substantially circular arc-shaped beam portions. The base end-side weight portion joining portion extends from a joining portion between the first circular or substantially circular arc-shaped beam portion and the second circular or substantially circular arc-shaped beam portion in the X-axis positive direction, and joined to the base end-side weight portion. | 05-01-2014 |
20140230209 | PIEZOELECTRIC POWER GENERATING DEVICE AND MANUFACTURING METHOD THEREOF - A piezoelectric power generating device is provided which is capable of extracting a large amount of power without an increase in device size, even when applied with vibration of low frequency or weak external force, and which is easy to manufacture. | 08-21-2014 |
20140252918 | Piezoelectric Power Generating Device - A piezoelectric power generating device that includes a piezoelectric element having a first surface and a second surface opposite the first surface, a stopper, and a lever. The stopper has a first contact surface that is in contact with the first surface. The lever includes a contact portion, which includes a second contact surface that is in contact with the second surface, and a displacement portion. The lever is arranged in such a manner as to be rotatable relative to the stopper around a rotation axis such that the second contact surface presses the second surface when the displacement portion rotates relative to the stopper around the rotation axis. | 09-11-2014 |
20150013456 | ACCELERATION SENSOR - An acceleration sensor includes a fixation member, a weight member including a plate with two opposing sides parallel or substantially parallel to an X-direction and two opposing sides parallel to a Y-axis direction in a plan view, the weight member including a cutout extending in a direction about 45° relative to the X and Y axis directions, a vibrating beam linearly extending in the direction about 45° relative to the X and Y axis directions in the plan view, and one end portion is connected to the fixation member and the other end portion is connected to the weight member, the vibrating beam is partly arranged within the cutout and supporting the weight member to be displaceable in a Z-axis direction, a driver disposed on the vibrating beam and vibrating the vibrating beam, and a detector disposed on the vibrating beam and outputting a detection signal that is changed depending on deformation of the vibrating beam. | 01-15-2015 |
20150013457 | ACCELERATION SENSOR - A weight member includes two sides opposite to each other in an X-axis direction when looked at in a plan view. A vibrating beam includes one end portion connected at one location to a fixation member and the other end portion connected at one location to one of the two sides of the weight member in the X-axis direction when looked at in a plan view. The vibrating beam supports the weight member to be displaceable in the X-axis direction. A holding beam includes one end portion connected at one location to the fixation member and the other end portion connected at one location to the other of the two sides of the weight member opposing to each other in the X-axis direction when looked at in a plan view. The holding beam supports the weight member to be displaceable in the X-axis direction. A driver is disposed on the vibrating beam and vibrates the vibrating beam. A detector is disposed on the vibrating beam and configured to output a detection signal changes according to deformation of the vibrating beam. | 01-15-2015 |