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1. 发明授权

US10734922B2 Power generating element and power generating device 有权
公开(公告)号：US10734922B2
公开(公告)日：2020-08-04
申请号：US15758634
申请日：2017-04-05
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro Okada , Miho Okada
IPC分类号： H02N1/08 , H02K35/02 , H02K35/00 , H02N1/10 , H02N1/00
摘要： A power generating element 1 according to an embodiment includes a displacement member 10, a displacement member 20, and a fixed member 30. The displacement member 10 and the displacement member 20 are connected via an elastic deformation body 41. The displacement member 10 is connected to an attachment section 51 via an elastic deformation body 42. The displacement member 10 and/or the displacement member 20 includes a first power generation surface. The fixed member 30 includes a second power generation surface opposed to the first power generation surface. An electret material layer is provided on one surface of the first power generation surface and the second power generation surface. A counter electrode layer is provided on the other surface.

2. 发明授权

US10732056B2 Force sensor 有权
公开(公告)号：US10732056B2
公开(公告)日：2020-08-04
申请号：US15757394
申请日：2016-06-09
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro Okada , Miho Okada , Nobuhisa Nishioki
IPC分类号： G01L1/14 , G01L5/165 , G01L25/00
摘要： A force sensor of the present invention includes: a supporting body arranged on an X-Y plane; a deformation body arranged opposite to the supporting body and having a deformation part elastically deformed by an action of a force to be detected; a fixed electrode arranged on the supporting body; a displacement electrode provided to the deformation part of the deformation body in such a manner as to face the fixed electrode with which it forms a capacitive element; and a detection circuit that outputs an electrical signal representing the acting force based on a variation amount of a capacitance value of the capacitive element, wherein the capacitive element includes a first capacitive element and a second capacitive element, and the detection circuit determines whether the force sensor is normally functioning based on a first electrical signal corresponding to a capacitance value of the first capacitive element, a second electrical signal corresponding to a capacitance value of the second capacitive element, and an added electrical signal corresponding to a sum of the capacitance values of the first and second capacitive elements.

3. 发明申请

US20200240854A1 FORCE SENSOR 审中-公开
公开(公告)号：US20200240854A1
公开(公告)日：2020-07-30
申请号：US15761415
申请日：2017-03-06
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro OKADA , Satoshi ERA
IPC分类号： G01L1/14 , G01L5/16 , G01L25/00
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.

4. 发明授权

US10564059B2 Force sensor 有权
公开(公告)号：US10564059B2
公开(公告)日：2020-02-18
申请号：US15759423
申请日：2016-08-29
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro Okada , Miho Okada
IPC分类号： G01L5/16 , G01L1/14 , G01L1/22 , G01L25/00 , G01L5/166 , G01L5/161 , G01L5/165 , G01L5/162
摘要： A force sensor according to the present invention is configured to detect at least one component among components of a force in each axis direction in an XYZ three-dimensional coordinate system and a moment around each axis, and includes: a support body arranged on an XY plane; a deformation body joined to the support body; and a detection circuit that outputs an electric signal indicating a force applied on the deformation body. The deformation body includes a first deformation portion having a first spring constant and a second deformation portion having a second spring constant different from the first spring constant, and the detection circuit outputs, in response to an applied force, a first electric signal corresponding to the deformation of the first deformation portion and a second electric signal corresponding to the deformation of the second deformation portion and determines whether the force sensor functions normally based on a change of a ratio between the first electric signal and the second electric signal, both corresponding to the applied force.

5. 发明授权

US10547253B2 Power generating element 有权
公开(公告)号：US10547253B2
公开(公告)日：2020-01-28
申请号：US16357132
申请日：2019-03-18
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro Okada , Miho Okada
IPC分类号： H01L41/113 , H02N2/18
摘要： There is provided a power generating element which is capable of converting vibration energy in various directions into electric energy without waste and less likely to be damaged even upon application of excessive vibration. Made available is a main generating structure (MGS) in which a first layer (100), a second layer (200) and a third layer (300) are laminated. The second layer (200) has a plate-like bridge portion (210), a central plate-like portion (220), a left-hand side plate-like portion (230) and a right-hand side plate-like portion (240), each of which is flexible, and the third layer (300), that is a weight body, formed in the “U” letter shape is joined with the lower surface thereof. The plate-like bridge portion (210) is protected by the weight body (300) circumference thereof. The first layer (100) is structured so that a piezoelectric material layer (105) is laminated on an upper surface of a lower layer electrode (E0), and four localized upper layer electrodes (E1 to E4) are laminated on the upper surface thereof. The base end of the plate-like bridge portion (210) is fixed to a pedestal (400). Vibration of the weight body (300) is efficiently transmitted to the plate-like bridge portion (210) and the bridge portion piezoelectric layer (110), and a power generating circuit (500) outputs electric power on the basis of charge generated at the lower layer electrode (E0) and the upper layer electrodes (E1 to E4).

6. 发明申请

US20190199243A1 POWER GENERATING ELEMENT 审中-公开
公开(公告)号：US20190199243A1
公开(公告)日：2019-06-27
申请号：US16210479
申请日：2018-12-05
申请人： TRI-FORCE MANAGEMENT CORPORATION
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).

7. 发明申请

US20180252602A1 TORQUE SENSOR 审中-公开
公开(公告)号：US20180252602A1
公开(公告)日：2018-09-06
申请号：US15756863
申请日：2016-05-31
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro OKADA , Miho OKADA , Nobuhisa NISHIOKI
IPC分类号： G01L3/10 , G01L25/00
CPC分类号： G01L3/106 , G01L25/003
摘要： A torque sensor of the present invention includes: a ring-shaped deformation body; first to fourth displacement electrodes deformable due to elastic deformation of the ring-shaped deformation body; first to fourth fixed electrodes arranged at positions opposite to those of the first to fourth displacement electrodes; and a detection circuit that outputs an electrical signal representing torque based on a variation amount of capacitance values of first to fourth capacitive elements formed by the first to fourth displacement electrodes and the first to fourth fixed electrodes, wherein the detection circuit outputs, as the electrical signals representing the acting torque, a first electrical signal corresponding to a difference between “a sum of a capacitance value of the first capacitive element and a capacitance value of the second capacitive element” and “a sum of a capacitance value of the third capacitive element and a capacitance value of the fourth capacitive element” and a second electrical signal corresponding to a difference between the capacitance value of the first capacitive element and the capacitance value of the third capacitive element and determines whether the torque sensor is normally functioning based on the first and the second electrical signals.

8. 发明申请

US20180017452A1 TORQUE SENSOR 审中-公开
公开(公告)号：US20180017452A1
公开(公告)日：2018-01-18
申请号：US15546605
申请日：2015-01-26
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro OKADA , Miho OKADA
IPC分类号： G01L3/10
CPC分类号： G01L3/10 , G01L3/106 , G01L3/108 , G01L3/14 , G01L3/1457
摘要： The present invention provides a torque sensor that is small and highly rigid and for which high production efficiency is possible. An annular deformation body (50) is disposed between a left side support body (10) and a right side support body (20). Protruding parts (11, 12) of the left side support body (10) are joined to two upper and lower sites on the left side surface of the annular deformation body (50), and protruding parts (21, 22) of the right side support body (20) are joined to two left and right sites on the right side surface of the annular deformation body (50). The annular deformation body (50) has, at four sites, detection parts (D1 to D4) that cause elastic deformation, the right side surface of each of the detection parts (D1 to D4) moves close to or moves away from the opposing surface of the right side support body (20) when torque around the Z axis is exerted on the left side support body (10) in a state that a load is applied to the right side support body (20). A displacement electrode is formed on a right side surface of each of the detection parts (D1 to D4) and a fixed electrode is formed on an opposing surface of the right side support body (20) to constitute four sets of capacitive elements, thereby detecting torque exerted as fluctuation in capacitance value thereof.

9. 发明授权

US11329576B2 Power generating element 有权
公开(公告)号：US11329576B2
公开(公告)日：2022-05-10
申请号：US15918691
申请日：2018-03-12
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro Okada , Miho Okada
IPC分类号： H02N2/18
摘要： A power generating element is provided that includes first and second plate-like structures, a pedestal that supports the first plate-like structure, and first and second piezoelectric elements that generate charges on the basis of the deflections of the two plate-like structures. A base end portion of the first plate-like structure is connected to the pedestal, and a direction from the base end portion toward the tip end portion of the first plate-like structure is a Y-axis positive direction. A base end portion of the second plate-like structure is connected to the tip end portion of the first plate-like structure via a connection body, and a direction from the base end portion toward the tip end portion of the second plate-like structure is a Y-axis negative direction. A frequency band of a half-value width of a resonance system formed on the basis of the flexibility of the second plate-like structure at least partially overlaps a frequency band of a half-value width of a resonance system formed on the basis of the flexibility of the first plate-like structure.

10. 发明申请

US20220107231A1 TORQUE SENSOR 有权
公开(公告)号：US20220107231A1
公开(公告)日：2022-04-07
申请号：US17402829
申请日：2021-08-16
申请人： TRI-FORCE MANAGEMENT CORPORATION
发明人： Kazuhiro OKADA , Miho OKADA
IPC分类号： G01L3/10 , G01L3/14
摘要： The present invention provides a torque sensor that is small and highly rigid and for which high production efficiency is possible. An annular deformation body (50) is disposed between a left side support body (10) and a right side support body (20). Protruding parts (11, 12) of the left side support body (10) are joined to two upper and lower sites on the left side surface of the annular deformation body (50), and protruding parts (21, 22) of the right side support body (20) are joined to two left and right sites on the right side surface of the annular deformation body (50). The annular deformation body (50) has, at four sites, detection parts (D1 to D4) that cause elastic deformation, the right side surface of each of the detection parts (D1 to D4) moves close to or moves away from the opposing surface of the right side support body (20) when torque around the Z axis is exerted on the left side support body (10) in a state that a load is applied to the right side support body (20). A displacement electrode is formed on a right side surface of each of the detection parts (D1 to D4) and a fixed electrode is formed on an opposing surface of the right side support body (20) to constitute four sets of capacitive elements, thereby detecting torque exerted as fluctuation in capacitance value thereof.

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