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公开(公告)号：US20180209860A1
公开(公告)日：2018-07-26
申请号：US15745979
申请日：2016-07-21
IPC分类号： G01L3/10
CPC分类号： G01L3/10 , G01L1/14 , G01L1/2231 , G01L3/106 , G01L3/14 , G01L3/1428 , G01L3/1435 , G01L3/1442 , G01L5/16 , G01L5/165
摘要： An inner support member, a detection deformable body, and a ring-shaped outer support member are disposed sequentially from the inside to the outside around a Z axis as a central axis. Inner surfaces in the vicinity of inner support points of the detection deformable body connect to outer surfaces of the inner support member via inner connecting members, and outer surfaces in the vicinity of outer support points of the detection deformable body connect to inner surfaces of the outer support member via outer connecting members. When a torque acts in the clockwise direction on the outer support member (130) while the inner support member is fixed, detection parts are displaced outwardly, and detection parts are displaced inwardly. These displacements are detected electrically as changes in capacitance values of four capacitor elements including opposing electrodes.
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公开(公告)号：US10209151B2
公开(公告)日：2019-02-19
申请号：US15745979
申请日：2016-07-21
摘要： An inner support member, a detection deformable body, and a ring-shaped outer support member are disposed sequentially from the inside to the outside around a Z axis as a central axis. Inner surfaces in the vicinity of inner support points of the detection deformable body connect to outer surfaces of the inner support member via inner connecting members, and outer surfaces in the vicinity of outer support points of the detection deformable body connect to inner surfaces of the outer support member via outer connecting members. When a torque acts in the clockwise direction on the outer support member (130) while the inner support member is fixed, detection parts are displaced outwardly, and detection parts are displaced inwardly. These displacements are detected electrically as changes in capacitance values of four capacitor elements including opposing electrodes.
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公开(公告)号：US10473917B2
公开(公告)日：2019-11-12
申请号：US15579435
申请日：2016-06-07
发明人： Kazuhiro Okada , Satoshi Era , Shinya Sakamoto , Yoshifumi Ikeda , Shogo Kurogi , Kenji Ogata
摘要： A mirror with a reflective layer formed thereon is supported within a frame-shaped support by two U-shaped arms. A plate-like arm connects fixation points (Q1, Q2), and a plate-like arm connects fixation points (Q3, Q4). A pair of piezoelectric elements (E11, E12) disposed along a longitudinal axis (L1) on an upper surface of an outside bridge of the arm, and a single piezoelectric element (E20) disposed along the longitudinal axis (L2) on the upper surface of an inside bridge. Similarly, a pair of piezoelectric elements (E31, E32) disposed on an upper surface of an outside bridge of the arm, and a single piezoelectric element (E40) disposed on the upper surface of an inside bridge. When a positive drive signal is applied to the piezoelectric elements (E11, E20, E31, E40) and a negative drive signal is applied to the piezoelectric elements (E12, E32), the mirror is displaced efficiently.
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公开(公告)号：US10481391B2
公开(公告)日：2019-11-19
申请号：US15579547
申请日：2016-06-06
发明人： Kenji Ogata , Shinya Sakamoto , Yoshifumi Ikeda , Shogo Kurogi , Kazuhiro Okada , Satoshi Era
摘要： Actuators (140), which are a pair of members, are disposed one on either side of a movable frame (120) in the X-axis direction, and oscillate the movable frame (120) about the X axis in relation to a fixed frame (110) by deformation caused by stretching and contracting of piezoelectric elements. Actuators (150), which are a pair of members, are disposed one on either side of a mirror (130) in the Y-axis direction, and oscillate the mirror (130) about the Y axis in relation to the movable frame (120) by deformation caused by stretching and contracting of the piezoelectric elements. The length of each actuator (140) extending in the Y-axis direction is longer than a distance between an inner side of the fixed frame (110) to which the actuator (140) is connected and the middle point of an outer side of the movable frame (120) in the Y-axis direction.
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公开(公告)号：US20190199243A1
公开(公告)日：2019-06-27
申请号：US16210479
申请日：2018-12-05
发明人： Kazuhiro OKADA , Satoshi Era , Miho Okada
IPC分类号： H02N2/18 , H01L41/053 , H01L41/113
CPC分类号： H02N2/186 , H01L41/053 , H01L41/1136 , H02N2/188
摘要： The power generation efficiency is to be enhanced by converting vibration energy including various direction components into electric energy without waste. A cantilever structure is adopted, in which a first plate-like bridge portion (120) and a second plate-like bridge portion (130) extend in a shape of a letter U from a fixing-portion (110) fixed to the device housing (200) and a weight body (150) is connected to the end. On the upper surface of the cantilever structure, a common lower layer electrode (E00), a layered piezoelectric element (300) and discrete upper layer electrodes (Ex1 to Ez4) are formed. The upper layer electrodes (Ez1 to Ez4) disposed on a center line (Lx, Ly) of each plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the Z-axis direction vibration of the weight body (150). The upper layer electrodes (Ex1 to Ex4, Ey1 to Ey4) disposed on both sides of the center line (Lx, Ly) of the plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the X-axis or Y-axis direction vibration of the weight body (150).
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公开(公告)号：US11085836B2
公开(公告)日：2021-08-10
申请号：US15761415
申请日：2017-03-06
发明人： Kazuhiro Okada , Satoshi Era
摘要： A force sensor according to the present invention includes: an annular deformable body arranged to surround an origin O when viewed in the Z-axis direction and configured to generate elastic deformation by application of one of a force and a moment; and a detection circuit that outputs an electric signal indicating one of the applied force and the moment on the basis of the elastic deformation generated in the deformable body. The deformable body includes: two fixed portions fixed with respect to the XYZ three-dimensional coordinate system; two force receiving portions positioned alternately with the fixed portions in a circumferential direction of the deformable body and configured to receive application of one of the force and the moment; and four deformable portions positioned between the fixed portion and the force receiving portion adjacent to each other in the circumferential direction of the deformable body, and each of the deformable portions includes a curved portion protruding in the Z-axis direction, and the detection circuit outputs the electric signal on the basis of elastic deformation generated in the curved portion.
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公开(公告)号：US10177689B2
公开(公告)日：2019-01-08
申请号：US14914854
申请日：2014-05-15
发明人： Kazuhiro Okada , Satoshi Era , Miho Okada
IPC分类号： H01L41/113 , H02N2/18 , H01L41/053
摘要： The power generation efficiency is to be enhanced by converting vibration energy including various direction components into electric energy without waste. A cantilever structure is adopted, in which a first plate-like bridge portion (120) and a second plate-like bridge portion (130) extend in a shape of a letter U from a fixing-portion (110) fixed to the device housing (200) and a weight body (150) is connected to the end. On the upper surface of the cantilever structure, a common lower layer electrode (E00), a layered piezoelectric element (300) and discrete upper layer electrodes (Ex1 to Ez4) are formed. The upper layer electrodes (Ez1 to Ez4) disposed on a center line (Lx, Ly) of each plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the Z-axis direction vibration of the weight body (150). The upper layer electrodes (Ex1 to Ex4, Ey1 to Ey4) disposed on both sides of the center line (Lx, Ly) of the plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the X-axis or Y-axis direction vibration of the weight body (150).
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公开(公告)号：US11088637B2
公开(公告)日：2021-08-10
申请号：US16210479
申请日：2018-12-05
发明人： Kazuhiro Okada , Satoshi Era , Miho Okada
IPC分类号： H02N2/18 , H01L41/113 , H01L41/053
摘要： The power generation efficiency is to be enhanced by converting vibration energy including various direction components into electric energy without waste. A cantilever structure is adopted, in which a first plate-like bridge portion (120) and a second plate-like bridge portion (130) extend in a shape of a letter U from a fixing-portion (110) fixed to the device housing (200) and a weight body (150) is connected to the end. On the upper surface of the cantilever structure, a common lower layer electrode (E00), a layered piezoelectric element (300) and discrete upper layer electrodes (Ex1 to Ez4) are formed. The upper layer electrodes (Ez1 to Ez4) disposed on a center line (Lx, Ly) of each plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the Z-axis direction vibration of the weight body (150). The upper layer electrodes (Ex1 to Ex4, Ey1 to Ey4) disposed on both sides of the center line (Lx, Ly) of the plate-like bridge portion take out charge generated in the piezoelectric element (300) due to deflection caused by the X-axis or Y-axis direction vibration of the weight body (150).
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公开(公告)号：US20180172982A1
公开(公告)日：2018-06-21
申请号：US15579435
申请日：2016-06-07
发明人： Kazuhiro Okada , Satoshi Era , Shinya Sakamoto , Yoshifumi Ikeda , Shogo Kurogi , Kenji Ogata
摘要： A mirror with a reflective layer formed thereon is supported within a frame-shaped support by two U-shaped arms. A plate-like arm connects fixation points (Q1, Q2), and a plate-like arm connects fixation points (Q3, Q4). A pair of piezoelectric elements (E11, E12) disposed along a longitudinal axis (L1) on an upper surface of an outside bridge of the arm, and a single piezoelectric element (E20) disposed along the longitudinal axis (L2) on the upper surface of an inside bridge. Similarly, a pair of piezoelectric elements (E31, E32) disposed on an upper surface of an outside bridge of the arm, and a single piezoelectric element (E40) disposed on the upper surface of an inside bridge. When a positive drive signal is applied to the piezoelectric elements (E11, E20, E31, E40) and a negative drive signal is applied to the piezoelectric elements (E12, E32), the mirror is displaced efficiently.
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公开(公告)号：US20180157031A1
公开(公告)日：2018-06-07
申请号：US15579547
申请日：2016-06-06
发明人： Kenji Ogata , Shinya Sakamoto , Yoshifumi Ikeda , Shogo Kurogi , Kazuhiro Okada , Satoshi Era
CPC分类号： G02B26/101 , B81B3/0045 , B81B3/0062 , B81B2201/042 , B81B2203/0172 , B81B2203/0181 , B81B2203/058 , G02B7/182 , G02B26/0858
摘要： Actuators (140), which are a pair of members, are disposed one on either side of a movable frame (120) in the X-axis direction, and oscillate the movable frame (120) about the X axis in relation to a fixed frame (110) by deformation caused by stretching and contracting of piezoelectric elements. Actuators (150), which are a pair of members, are disposed one on either side of a mirror (130) in the Y-axis direction, and oscillate the mirror (130) about the Y axis in relation to the movable frame (120) by deformation caused by stretching and contracting of the piezoelectric elements. The length of each actuator (140) extending in the Y-axis direction is longer than a distance between an inner side of the fixed frame (110) to which the actuator (140) is connected and the middle point of an outer side of the movable frame (120) in the Y-axis direction.
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