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公开(公告)号：US11761831B2
公开(公告)日：2023-09-19
申请号：US17829567
申请日：2022-06-01
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Sekine , Yuki Hongo
CPC classification number: G01L1/2287 , G01L1/144
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：US10734922B2
公开(公告)日：2020-08-04
申请号：US15758634
申请日：2017-04-05
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada
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：US10732056B2
公开(公告)日：2020-08-04
申请号：US15757394
申请日：2016-06-09
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada , Nobuhisa Nishioki
Abstract: 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.
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公开(公告)号：US10564059B2
公开(公告)日：2020-02-18
申请号：US15759423
申请日：2016-08-29
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada
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：US10547253B2
公开(公告)日：2020-01-28
申请号：US16357132
申请日：2019-03-18
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada
IPC: H01L41/113 , H02N2/18
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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Patent Agency Ranking
公开(公告)号：US11118987B2
公开(公告)日：2021-09-14
申请号：US16459352
申请日：2019-07-01
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada
Abstract: A torque sensor including an annular deformation body disposed so as to surround a circumference of a rotation axis, an exertion support body, a fixing support body, and a detection circuit. The annular deformation body has four coupling parts, and four detection parts positioned between two coupling parts which are adjacent in the circumferential direction of the annular deformation body, the detection parts undergoing elastic deformation by exertion of torque. The detection parts each are formed in a convex shape on one side in a direction along the rotation axis and are formed in a concave shape on the other side in a direction along the rotation axis. The detection circuit outputs electric signals on the basis of elastic deformation undergone to the detection part of the annular deformation body.
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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：US10775250B2
公开(公告)日：2020-09-15
申请号：US15756863
申请日：2016-05-31
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada , Nobuhisa Nishioki
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：US10756651B2
公开(公告)日：2020-08-25
申请号：US15891858
申请日：2018-02-08
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada
IPC: H02N1/08
Abstract: Provided is a power generating element and a power generating device capable of using vibration energy not used for power generation in the past. The power generating element includes a displacement member, a fixed member, and an elastic deformation body. An electret material layer is formed on a surface of one of the displacement member and the fixed member. A counter electrode layer opposed to the electret material layer is formed on the other surface. When vibration energy is given to the power generating element, the displacement member is displaced with respect to the fixed member such that an inter-layer distance between the electret material layer and the counter electrode layer fluctuates according to deformation of the elastic deformation body.
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公开(公告)号：US10468997B2
公开(公告)日：2019-11-05
申请号：US15758501
申请日：2016-06-01
Applicant: TRI-FORCE MANAGEMENT CORPORATION
Inventor： Kazuhiro Okada , Miho Okada
IPC: H01L41/047 , H02N2/00 , H02N2/18 , H01L41/113
Abstract: A tabular structure having flexibility extends from a root end portion to a distal end portion along a reference axis. The root end portion is fixed to a pedestal. Three sectioned parts are provided in the tabular structure. Weights are joined to the lower surfaces of the respective three sectioned parts. The three sectioned parts respectively have different thicknesses. As a result, spring constants are different. When vibration energy from the outside is applied to the pedestal, the weights vibrate and a bend occurs in the tabular structure. If a charge generating element such as a piezoelectric element is stuck to the tabular structure, an electric charge is generated by bending stress. A frequency band capable of generating electric power is expanded by providing a plurality of weights in the tabular structure in which the spring constants are different in each of the sectioned parts.
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