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公开(公告)号：US20210325273A1
公开(公告)日：2021-10-21
申请号：US17292449
申请日：2019-01-10
申请人： MIKUNI CORPORATION
发明人： Tomoya SATO , Katsuhiko FUKUI
摘要： A pressure sensor of the present invention comprises a cylindrical housing (10, 210); a diaphragm (30) which is fixed to the front end of the housing and exposed to a pressure medium; a pressure measuring member (70, 270) comprising a first electrode (71), a piezoelectric element (72) and a second electrode (73) laminated in sequence inside the housing; a first conductor (91, 210) in a long shape which is electrically connected to the first electrode; a second conductor (92, 290) in a long shape which is electrically connected to the second electrode; and a restricting member (100, 300) having insulation which is arranged inside the housing so as to restrict relative movement between the first conductor and the second conductor According to this configuration, it is possible to suppress or prevent variations in parasitic capacitance so as to suppress or prevent the occurrence of noise.
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公开(公告)号：US20210148774A1
公开(公告)日：2021-05-20
申请号：US16622319
申请日：2018-10-25
发明人： Daisuke KASAHARA , Hirotaka SAITO
摘要： A pressure sensor includes: a housing having a tubular shape, and including a front end including an opening; a diaphragm that is disposed to close the opening, and is structured to deform depending on a pressure exerted on a front side of the diaphragm, and includes a hole extending rearwardly from a front end face of the diaphragm; a sensor element structured to output a signal varying depending on an amount of the deformation of the diaphragm; and a heat receiver including a first portion and a second portion. The first portion is disposed in the hole of the diaphragm, and is joined with an inner periphery of the diaphragm defining the hole. The second portion is formed integrally with the first portion, and is disposed adjacent to a front end of the first portion, and is structured to cover the front end face of the diaphragm.
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公开(公告)号：US10996127B2
公开(公告)日：2021-05-04
申请号：US16079254
申请日：2017-02-21
发明人： Yuta Kanamori , Masanori Yomoyama , Tetsuya Aiba , Ikuo Takahashi , Hiroshi Nakagawa , Kazuo Takahashi , Yusuke Satoh
摘要： A pressure detection device includes: a piezoelectric element that detects a pressure change via a diaphragm head or the like; a circuit board that is provided with a processing circuit that performs electrical processing with respect to a charge signal outputted from the piezoelectric element; a conductive housing member, which has conductivity and is disposed to cover (house) the circuit board, and which is connected to the ground of the circuit board; and a housing (a leading end side housing, the diaphragm head and a rear end side housing), which houses the piezoelectric element, the circuit board and the housing member, and which is electrically insulated from the piezoelectric element, the circuit board and the housing member.
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公开(公告)号：US10451508B2
公开(公告)日：2019-10-22
申请号：US15607747
申请日：2017-05-30
摘要： A pressure transducer comprises a housing including a body section and at least one end cap at one end of the body section, which are made of piezoelectric crystal, and a piezoelectric resonator in the housing. The body section and the end cap are bonded by an atomic diffusion bonding method.
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公开(公告)号：US20190301959A1
公开(公告)日：2019-10-03
申请号：US15939425
申请日：2018-03-29
申请人： VEONEER US INC.
发明人： Jacob Pusheck
摘要： An apparatus includes a base assembly, a gasket and a housing assembly. The base assembly may have a locking feature and a bearing feature. The locking feature may have a first passage in communication with an exterior of the apparatus. The gasket may be disposed on the base assembly and may have (i) a base portion, (ii) a column portion and (iii) a second passage in communication with the first passage. The housing assembly may have a sealing feature and may be configured to hold a sensor. The sealing feature (a) may mate with the bearing feature and (b) may compress the base portion of the gasket. The sensor (a) may seal to the column portion of the gasket and (b) may be in communication with the exterior of the apparatus through the first passage and the second passage.
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公开(公告)号：US10378988B2
公开(公告)日：2019-08-13
申请号：US15221243
申请日：2016-07-27
申请人： KISTLER HOLDING AG
发明人： Reinhold Buck , Martin Giger
摘要： A pressure sensor includes an evaluation unit and a sensor assembly, which includes a sensor and an electrode arrangement. The sensor generates signals under the action of a pressure profile, and the electrode arrangement transmits the signals to the evaluation unit, which includes an evaluation unit housing, an electric circuit board and a reinforcement element, which is arranged in a radial plane between the electric circuit board and the evaluation unit housing. The reinforcement element is mechanically connected to the electric circuit board and dampens mechanical resonance vibrations of the electric circuit board that occur in the radial plane.
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公开(公告)号：US10247633B2
公开(公告)日：2019-04-02
申请号：US15103032
申请日：2015-01-12
申请人： DENSO CORPORATION
发明人： Takayuki Shibata , Kouji Ooya
摘要： In a combustion pressure sensor having built-in charge amplifier, signal line overheating and deterioration of detection accuracy is restricted. The combustion pressure sensor includes a sensor body that includes a piezoelectric element having one end connected to chassis ground through a housing and detects pressure in a combustion chamber of engine, and a charge amplifier that includes at least a voltage converting unit converting output of the sensor body into voltage signal and a reference voltage generating unit generating reference voltage supplied to the voltage converting unit and operates on power supplied from a signal processing unit disposed outside. The reference voltage generating unit includes a voltage generating circuit having a constant current circuit and a resistor connected in series. The voltage generating circuit has one end connected to power line extending from the signal processing unit, and the other end connected to the end of the piezoelectric element.
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公开(公告)号：US20190056282A1
公开(公告)日：2019-02-21
申请号：US16079254
申请日：2017-02-21
发明人： Yuta KANAMORI , Masanori YOMOYAMA , Tetsuya AIBA , Ikuo TAKAHASHI , Hiroshi NAKAGAWA , Kazuo TAKAHASHI , Yusuke SATOH
摘要： A pressure detection device includes: a piezoelectric element that detects a pressure change via a diaphragm head or the like; a circuit board that is provided with a processing circuit that performs electrical processing with respect to a charge signal outputted from the piezoelectric element; a conductive housing member, which has conductivity and is disposed to cover (house) the circuit board, and which is connected to the ground of the circuit board; and a housing (a leading end side housing, the diaphragm head and a rear end side housing), which houses the piezoelectric element, the circuit board and the housing member, and which is electrically insulated from the piezoelectric element, the circuit board and the housing member.
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公开(公告)号：US10168242B2
公开(公告)日：2019-01-01
申请号：US15119785
申请日：2015-02-13
申请人： KISTLER HOLDING AG
发明人： Stefan Brechbühl , Simon Brunner
摘要： A glow plug adaptor for pressure measurement in a combustion chamber of an internal combustion engine includes an adaptor sleeve attached to an adaptor head that contains a pressure sensor with a diaphragm. A sealing shoulder can be screwed into an opening in a combustion chamber to provide a pressure-tight seal and permit passage of signal conductors from the pressure sensor through the adaptor sleeve. The adaptor head is tapered at the proximal combustion chamber end, and in the adaptor head a cavity is formed in such a way that the cavity is bounded by the diaphragm of the pressure sensor mounted therein and by a closed end wall of the adaptor head.
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公开(公告)号：US10101227B2
公开(公告)日：2018-10-16
申请号：US15217147
申请日：2016-07-22
申请人： KISTLER HOLDING AG
发明人： Reinhold Buck , Martin Giger
摘要： A piezoelectric pressure sensor includes a sensor housing enclosing a membrane, a piezoelectric sensor, an electrode arrangement and a pre-stressing body. The membrane captures a pressure profile causing polarization charges generated on the piezoelectric sensor. The electrode arrangement receives the polarization charges generated and includes a charge-pick-off and a charge output. The charge pick-off is electrically and mechanically connected to the charge output, which is electrically is mechanically connected to the pre-stressing body via an electrical feedthrough arrangement on a side of the pre-stressing body that faces away from the membrane and seals the third gap in a pressure-tight manner from an environment of the third gap.
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