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公开(公告)号：US20210262871A1
公开(公告)日：2021-08-26
申请号：US16944964
申请日：2020-07-31
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Miho SEKINE , Yuki HONGO
Abstract: A strain body of a force sensor according to the present invention includes a tilting structure disposed between a force receiving body and a support body, a force-receiving-body-side deformable body connecting the force receiving body and the tilting structure, and a support-body-side deformable body connecting the tilting structure and the support body. The tilting structure includes a first tilting body that extends in a second direction orthogonal to a first direction and that is elastically deformable by the action of force in the first direction.
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公开(公告)号：US20190131890A1
公开(公告)日：2019-05-02
申请号：US15758634
申请日：2017-04-05
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Miho OKADA
IPC: H02N1/08
Abstract: 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.
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公开(公告)号：US20190113407A1
公开(公告)日：2019-04-18
申请号：US15759423
申请日：2016-08-29
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Miho OKADA
IPC: G01L5/16
Abstract: 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.
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公开(公告)号：US20170110989A1
公开(公告)日：2017-04-20
申请号：US15285143
申请日：2016-10-04
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Miho OKADA
IPC: H02N2/18 , H01L41/113
CPC classification number: H02N2/181 , H01L41/1136 , H02N2/186 , H02N2/188
Abstract: 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).
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公开(公告)号：US20200240854A1
公开(公告)日：2020-07-30
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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Patent Agency Ranking
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：US20180252602A1
公开(公告)日：2018-09-06
申请号：US15756863
申请日：2016-05-31
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Miho OKADA , Nobuhisa NISHIOKI
CPC classification number: G01L3/106 , G01L25/003
Abstract: 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.
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公开(公告)号：US20180017452A1
公开(公告)日：2018-01-18
申请号：US15546605
申请日：2015-01-26
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Miho OKADA
IPC: G01L3/10
CPC classification number: G01L3/10 , G01L3/106 , G01L3/108 , G01L3/14 , G01L3/1457
Abstract: 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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公开(公告)号：US20220291062A1
公开(公告)日：2022-09-15
申请号：US17829567
申请日：2022-06-01
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Miho SEKINE , Yuki HONGO
Abstract: A strain body of a force sensor according to the present invention includes a tilting structure disposed between a force receiving body and a support body, a force-receiving-body-side deformable body connecting the force receiving body and the tilting structure, and a support-body-side deformable body connecting the tilting structure and the support body. The tilting structure includes a first tilting body that extends in a second direction orthogonal to a first direction and that is elastically deformable by the action of force in the first direction.
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公开(公告)号：US20200256750A1
公开(公告)日：2020-08-13
申请号：US15763163
申请日：2018-02-09
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro OKADA , Satoshi ERA
Abstract: A force sensor according to the present invention includes a closed loop shaped deformable body and a detection circuit that outputs an electric signal indicating an applied force or a moment on the basis of elastic deformation generated in the deformable body. The deformable body includes at least two fixed portions, at least two force receiving portions adjacent to the fixed portion in a closed loop shaped path of the deformable body, and a deformable portion positioned between the fixed portion and the force receiving portion adjacent to each other in the closed loop shaped path. The deformable portion includes: a main curved portion having a curved main curved surface; a fixed portion-side curved portion connecting the main curved portion to the corresponding fixed portion and having a fixed portion-side curved surface; and a force receiving portion-side curved portion connecting the main curved portion to the corresponding force receiving portion and having a force receiving portion-side curved surface. Both of the curved surfaces are provided on the positive side on the Z-axis or the negative side on the Z-axis of the deformable portion, with mutually different curved directions. The detection circuit outputs an electric signal on the basis of elastic deformation generated in the main curved portion.
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