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公开(公告)号：EP4339127A1
公开(公告)日：2024-03-20
申请号：EP23197576.4
申请日：2023-09-15
摘要： A cushioning sheet includes a first portion provided in a first area, and a second portion provided in a second area and having a strength stronger than that of the first portion.
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公开(公告)号：EP4339126A1
公开(公告)日：2024-03-20
申请号：EP23197574.9
申请日：2023-09-15
发明人： KAWAJI, Michiko , FURUHATA, Makoto
摘要： Provided is a cushioning material obtained by stacking a plurality of cushioning sheets, in which the plurality of cushioning sheets include a first cushioning sheet, a second cushioning sheet having a strength stronger than that of the first cushioning sheet, and a third cushioning sheet having a strength stronger than that of the second cushioning sheet.
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公开(公告)号：EP3396315A1
公开(公告)日：2018-10-31
申请号：EP18169021.5
申请日：2018-04-24
发明人： FURUHATA, Makoto , KANEMOTO, Kei
IPC分类号： G01C19/574 , G01C19/5769 , B81B3/00
CPC分类号： G01C19/5733 , B60W10/184 , B60W10/22 , B60W30/02 , B60W2420/10 , B81B3/0051 , G01C19/574 , G01C19/5769 , G01P3/22
摘要： A physical quantity sensor according to an aspect of the invention includes a driven section and a drive spring that supports the driven section in such a way that the driven section is displaceable in a first direction. The drive spring has a serpentine shape and includes a plurality of spring structures extending in a second direction that intersects the first direction. At least one of the plurality of spring structures has a thin section thinner in a third direction that intersects the first and second directions than the other portion of the drive spring.
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公开(公告)号：EP1355412B1
公开(公告)日：2007-06-06
申请号：EP02707159.6
申请日：2002-03-26
摘要： A piezoelectric actuator has a diaphragm which has a tabular piezoelectric element oscillated in a longitudinal oscillation mode and a flexural oscillation mode. The face of the diaphragm has the disposition of a first electrode for sensing the amplitude of an oscillation in the longitudinal oscillation mode and a second electrode for sensing the amplitude of an oscillation in the flexural oscillation mode. Before the piezoelectric actuator is driven by a drive signal, a phase difference of a first sense signal output from the first electrode and a second sense signal output from the second electrode is sensed. Such a frequency that the sensed phase difference becomes maximum is determined, and a drive signal with a frequency coincident with that frequency is given to the piezoelectric element.
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公开(公告)号：EP1355412A1
公开(公告)日：2003-10-22
申请号：EP02707159.6
申请日：2002-03-26
IPC分类号： H02N2/00
摘要： A piezoactuator has a diaphragm, and the diaphragm has flat piezoelectric elements that oscillate in a longitudinal oscillation mode and a sinusoidal oscillation mode. A first electrode for detecting oscillation in the longitudinal oscillation mode, and a second electrode for detecting the amplitude of oscillation in the sinusoidal oscillation mode, are disposed on the surface of the diaphragm. When the piezoactuator is driven with a drive signal, the phase difference of a first detection signal output from the first electrode and a second detection signal output from the second electrode is detected. The frequency at which the detected phase difference becomes the maximum phase difference is then obtained, and a drive signal of a matching frequency is applied to the piezoelectric elements.
摘要翻译： 压电致动器具有隔膜，并且隔膜具有以纵向振荡模式和正弦振荡模式振荡的平坦的压电元件。 用于检测纵向振荡模式中的振荡的第一电极和用于检测正弦振荡模式中的振荡幅度的第二电极设置在隔膜的表面上。 当用驱动信号驱动压电致动器时，检测从第一电极输出的第一检测信号和从第二电极输出的第二检测信号的相位差。 然后获得检测到的相位差成为最大相位差的频率，并且将匹配频率的驱动信号施加到压电元件。
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