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公开(公告)号：US20240162747A1
公开(公告)日：2024-05-16
申请号：US18282686
申请日：2022-03-24
IPC分类号： H02J50/00 , G01H11/06 , G01R19/165 , G01R31/62
CPC分类号： H02J50/001 , G01H11/06 , G01R31/62 , G01R19/16576
摘要： A monitoring device includes a vibration-driven energy harvesting element as a vibration-driven energy harvesting unit that performs power generation in response to a sound or a vibration being occurred by a monitoring target and having a predetermined frequency, and a notification unit that notifies a state change of the monitoring target based on a magnitude relationship between a predetermined threshold value and a voltage value of the power generation by the vibration-driven energy harvesting element. The notification unit is configured to notify the state change when the vibration-driven energy harvesting element performs the power generation. Therefore, the vibration-driven energy harvesting element, which functions as a sensor unit, requires no power supply.
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公开(公告)号：US20240097582A1
公开(公告)日：2024-03-21
申请号：US18267179
申请日：2021-10-15
CPC分类号： H02N2/181 , H02J50/001 , H02N2/186
摘要： Provided is a vibration-driven energy harvesting device that can enhance the power generation efficiency of the vibration-driven energy harvesting device even in a case where vibration is changed. The vibration-driven energy harvesting device includes a vibration-driven energy harvesting element that generates power in accordance with vibration of an electrode; an output unit that supplies the power generated by the vibration-driven energy harvesting element to a load resistor once being connected to the load resistor; and an adjustment unit that adjusts an input impedance of the output unit in accordance with a signal corresponding to an acceleration in the vibration.
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公开(公告)号：US20240088802A1
公开(公告)日：2024-03-14
申请号：US18266995
申请日：2021-11-01
IPC分类号： H02N1/06
CPC分类号： H02N1/06
摘要： A vibration-driven energy harvesting element includes fixed electrodes that are fixed to a base part, a movable electrode that is movable with respect to the fixed electrodes, and an elastic support part that includes one end fixed to the base part and another end fixed to the movable electrode and elastically supports the movable electrode. The elastic support part of the vibration-driven energy harvesting element includes-: a plurality of elastic structures each of which has a linking portion, a first elastic portion, and a second elastic portion. The first elastic portion having one end fixed to the linking portion and another end fixed to the movable electrode and extending in a second direction orthogonal to a first direction in which the movable electrode vibrates. The second elastic portion having one end fixed to the linking portion and another end fixed to the base part and extending in the second direction. The plurality of elastic structures being disposed on both sides of the movable electrode in the first direction; and connecting members that connect the linking portions included in the plurality of elastic structures to each other.
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公开(公告)号：US11828410B2
公开(公告)日：2023-11-28
申请号：US17625927
申请日：2020-06-22
发明人： Eisei In , Tomonori Uchida
CPC分类号： F16M11/2092 , F16C29/04 , F16H25/24 , B25J17/0216 , F16H2025/204
摘要： An object of the present invention is to provide an actuator capable of reducing a shock in acceleration at the time of a turn caused by a load in a lateral direction orthogonal to an axis of the actuator even when the load is excessive while reducing manufacturing cost and manufacturing man-hours, and a tripod structure including the actuator. An actuator according to the present invention includes: a pipe; a ball screw used as a feed screw; a conversion nut used as a feed nut and screwed with the ball screw; a piston fixed integrally to the conversion nut and driven to expand and contract from a free end which is one end of the pipe; and a rolling bearing unit being provided on a tip of the free end of the pipe and including a plurality of roller followers holding the piston movably.
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公开(公告)号：US11624671B2
公开(公告)日：2023-04-11
申请号：US17645174
申请日：2021-12-20
发明人： Kazuya Takimoto , Tatsuya Tanaka , Tomoharu Oba
摘要： In a pressure sensor, a cap-shaped shielding member (17) to block an electric field undesirable for a signal processing electronic circuit unit of a sensor chip (16) is supported by an end surface of a disk conductive plate (19) between one end surface of the sensor chip (16) in a liquid sealing chamber (13) and a diaphragm (32). The conductive plate (19) is electrically connected via a group of input-output terminals (40ai) and bonding wires (Wi), for example, and the sensor chip (16) is supported by one end portion of a chip mounting member (18) which is electrically connected via the group of input and output terminals (40ai) and the bonding wires (Wi).
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公开(公告)号：US11610503B2
公开(公告)日：2023-03-21
申请号：US17627580
申请日：2020-07-15
发明人： Eisei In , Tomonori Uchida
摘要： An actuator includes a cylinder sandwiched between a fixing plate fixed to the other end surface of a supporting plate together with a servomotor and a bearing housing, a ball screw shaft having one end protruding into the cylinder through through holes of the fixing plate, a slide block screwed with one end of the ball screw shaft in the cylinder, a cylindrical-shaped piston coupled to an end of the slide block and reciprocatably located in the cylinder, linear motion bearing units located inside the bearing housing to movably support the piston, and linear motion bearing units located in the cylinder to movably support the slide block.
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公开(公告)号：US11489460B2
公开(公告)日：2022-11-01
申请号：US17053609
申请日：2019-04-25
摘要： The vibration-driven energy harvester includes: a first electrode; a second electrode facing the first electrode; a holder holding the first electrode and the second electrode so as to be movable relative to each other; a half-wave rectifier electrically connected to the first and the second electrodes that causes current flowing from the first electrode to the second electrode to flow to an output unit, and cuts off current flowing from the second electrode toward the first electrode; and a second rectifying element electrically connected to the first and the second electrodes that allows the current flowing from the second electrode to the first electrode and blocks the current flowing from the first electrode to the second electrode, wherein: the first electrode has a positively charged electret in a surface facing the second electrode, or the second electrode has a negatively charged electret in a surface facing the first electrode.
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公开(公告)号：US20220324697A1
公开(公告)日：2022-10-13
申请号：US17615978
申请日：2020-03-19
摘要： An electrostatic device includes: a fixed portion, a moveable portion, and an elastically-supporting portion that are formed in a same substrate; and a first glass package and a second glass package that are anodically bonded to each other on one and the other of front and back surfaces of the substrate with the fixed portion and the elastically-supporting portion separated from each other, the second glass package forms a sealed space in which the moveable portion is arranged between the first and second glass packages, an electret is formed at least partially in the fixed portion and the moveable portion, and a first electrode connected to the fixed portion and exposed on an outer surface of the second glass package and a second electrode connected to the elastically-supporting portion and exposed on the outer surface of the second glass package are formed in the second glass package.
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公开(公告)号：US11387749B2
公开(公告)日：2022-07-12
申请号：US16599735
申请日：2019-10-11
发明人： Daisuke Anai
摘要： A vibration energy harvester includes: a fixed electrode unit having a plurality of comb-tooth electrodes; a movable electrode unit having a plurality of comb-tooth electrodes; a weight fixed to the movable electrode unit; and an adjusting weight mounting structure capable of mounting an adjusting weight for additionally adjusting a mass of the weight.
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公开(公告)号：USD940082S1
公开(公告)日：2022-01-04
申请号：US29727520
申请日：2020-03-11
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