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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
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Satoshi Era , Miho Okada
IPC: H02N2/18 , H01L41/053 , H01L41/113
CPC classification number: H02N2/186 , H01L41/053 , H01L41/1136 , H02N2/188
Abstract: 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
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Satoshi Era
Abstract: 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
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Satoshi Era , Miho Okada
IPC: H01L41/113 , H02N2/18 , H01L41/053
Abstract: 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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Patent Agency Ranking
公开(公告)号：US11088637B2
公开(公告)日：2021-08-10
申请号：US16210479
申请日：2018-12-05
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Satoshi Era , Miho Okada
IPC: H02N2/18 , H01L41/113 , H01L41/053
Abstract: 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：US20180209860A1
公开(公告)日：2018-07-26
申请号：US15745979
申请日：2016-07-21
Applicant: TRI-FORCE MANAGEMENT CORPORATION , DAI-ICHI SEIKO CO., LTD.
Inventor： Kazuhiro Okada , Satoshi Era , Nobuhiro Nagamoto , Takahito Kamiudo , Kazuto Akiba
IPC: G01L3/10
CPC classification number: G01L3/10 , G01L1/14 , G01L1/2231 , G01L3/106 , G01L3/14 , G01L3/1428 , G01L3/1435 , G01L3/1442 , G01L5/16 , G01L5/165
Abstract: 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：US11205977B2
公开(公告)日：2021-12-21
申请号：US15759482
申请日：2017-07-26
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada , Satoshi Era
IPC: H02N2/18
Abstract: A power generating element according to the present invention includes: a support frame formed in a frame shape in plan view; a vibrating body provided inside the support frame; a first bridge portion and a second bridge portion that supports the vibrating body on the support frame; and a charge generating element to generate a charge at the time of displacement of the vibrating body. The support frame includes a first frame portion arranged on a first side with respect to the vibrating body and includes a second frame portion arranged on a second side opposite to the first side with respect to the vibrating body. The first bridge portion couples the vibrating body with the first frame portion. The second bridge portion couples the vibrating body with the second frame portion.
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公开(公告)号：US10571346B2
公开(公告)日：2020-02-25
申请号：US15764762
申请日：2018-01-09
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada , Satoshi Era
Abstract: A force sensor includes: a deformable body having a force receiving portion and a fixed portion; a displacement body configured to generate a displacement by elastic deformation generated in the deformable body; and a detection circuit configured to detect an applied force on the basis of the displacement generated in the displacement body, in which the deformable body includes: a tilting portion arranged between the force receiving portion and the fixed portion; a first deformable portion that connects the force receiving portion and the tilting portion; and a second deformable portion that connects the fixed portion and the tilting portion, the displacement body includes a displacement portion connected to the tilting portion and separated from the fixed portion, the detection circuit includes a first displacement sensor and a second displacement sensor arranged in the displacement portion, and the detection circuit outputs a first electric signal indicating an applied force on the basis of a detection value of the first displacement sensor, and outputs a second electric signal indicating an applied force on the basis of a detection value of the second displacement sensor, and then determines whether force detection is performed normally on the basis of the first electric signal and the second electric signal.
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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
Applicant: TRI-FORCE MANAGEMENT CORPORATION , DAI-ICHI SEIKO CO., LTD.
Inventor： Kazuhiro Okada , Satoshi Era , Nobuhiro Nagamoto , Takahito Kamiudo , Kazuto Akiba
Abstract: 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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