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公开(公告)号：US20170268916A1
公开(公告)日：2017-09-21
申请号：US15532170
申请日：2015-11-02
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Takahiro MIKI , Hiroaki HOSHIKA , Takayuki YOGO , Takahiro YAMAMOTO
CPC classification number: G01F1/684 , G01F1/6842 , G01F5/00 , G01F15/14 , G01M15/042
Abstract: To improve measurement stability of a flow rate detection unit in a physical quantity detection device, a periphery of a synthetic resin material is provided with a protruding section protruding to a cover side. A physical quantity detection device includes a housing, a front cover fixed to the housing, a circuit board housed in the housing, a flow rate detection unit that detects, in a sub-path, the flow rate of a gas to be measured by being attached to the circuit board, a connecting wire that electrically connects the flow rate detection unit to the circuit board, and a synthetic resin material that seals a connecting wire-included connection portion between the circuit board and the flow rate detection unit, the front cover having a protruding section covering at least a part of the synthetic resin material by protruding into the sub-path.
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公开(公告)号：US20170248455A1
公开(公告)日：2017-08-31
申请号：US15329873
申请日：2015-06-15
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Takahiro MIKI , Takayuki YOGO , Hiroaki HOSHIKA
CPC classification number: G01F1/6845 , F02M35/1038 , F02M35/10386 , F02M35/10393 , G01F1/684 , G01F1/6842 , G01F1/696 , G01F5/00 , G01N33/0022
Abstract: The purpose of this invention obtain a physical-quantity detection device, the external shape of the housing of which can be reduced in size. Said physical-quantity detection device, which detects a plurality of physical quantities of a gas being measured that flows through a main channel, is characterized by having a housing positioned inside said main channel, a circuit board insert-molded into said housing, and a plurality of detection sensors mounted on both sides of the circuit board.
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公开(公告)号：US20210116279A1
公开(公告)日：2021-04-22
申请号：US17047468
申请日：2019-02-14
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Binti Haridan FATIN FARHANAH , Takayuki YOGO , Noboru TOKUYASU , Akira UENODAN , Takahiro MIKI , Hiroaki HOSHIKA
Abstract: A compact physical quantity detecting device is provided since it is possible to lower the mounting height of a chip package by accommodating the chip package in a notched board. In the physical quantity detecting device of the present invention, a part in a thickness direction of a support body on which a flow rate detection unit and a processing unit are mounted is accommodated in a notch provided in a printed board.
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公开(公告)号：US20180313681A1
公开(公告)日：2018-11-01
申请号：US15534114
申请日：2016-02-26
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Takayuki YOGO , Takahiro MIKI , Hiroaki HOSHIKA , Hiroyuki ABE
CPC classification number: G01F1/684
Abstract: The objective of the present invention is to provide an air flow rate detecting device with which the inflow of air to the reverse surface of a diaphragm is reduced, while stresses acting on a flow rate detecting unit are alleviated and variability in the mounting of the flow rate detecting unit is reduced. This air flow rate measuring device comprises: a flow rate detecting unit including a diaphragm which detects the air flow rate of a gas being measured; a circuit board on which the flow rate detecting unit is mounted; and a housing which accommodates the circuit board. The flow rate detecting unit and the circuit board are secured to one another using a sheet-like adhesive, and are secured in such a way that a surface of the flow rate detecting unit that is perpendicular to the direction of flow is sealed by means of a resilient body, and a surface of the flow rate detecting unit that is parallel to the direction of flow is open.
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公开(公告)号：US20170082051A1
公开(公告)日：2017-03-23
申请号：US15126298
申请日：2015-01-07
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Hiroaki HOSHIKA , Takayuki YOGO , Takahiro MIKI , Takeo HOSOKAWA , Yuki ISOYA
CPC classification number: F02D41/182 , F02D37/02 , F02D41/18 , F02D2041/281 , F02D2041/286 , F02D2200/0414 , F02D2200/0418 , G01D3/0365 , G01D21/02 , G01N27/121 , G01N27/223 , G01N27/228 , G01N33/0073
Abstract: To achieve a physical quantity detection device capable of obtaining a desired overall device accuracy without unnecessarily raising the tolerances of detection elements, the present invention is characterized by having a plurality of physical quantity detection units for respectively detecting plurality of physical quantities, a storage unit for storing the error characteristics of individual physical quantity detection units, a physical quantity calculation unit for using at least two physical quantities detected by at least two of the plurality of physical quantity detection units to calculate a separate physical quantity, and an error calculation unit for reading the error characteristics of the plurality of physical quantity detection units from the storage unit and calculating the error of the separate physical quantity.
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Patent Agency Ranking
公开(公告)号：US20170037819A1
公开(公告)日：2017-02-09
申请号：US15301493
申请日：2015-03-25
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Takeo HOSOKAWA , Hiroaki HOSHIKA , Takayuki YOGO , Takahiro MIKI , Yuki ISOYA
CPC classification number: F02M35/10393 , F02D41/1494 , F02D41/26 , F02D2200/0414 , F02D2200/0418 , F02M35/10268 , G01N25/62 , G01N25/64 , G01N27/00 , G01N33/0016
Abstract: The purpose of the present invention is to reduce a load of preventing dew condensation, and to provide a highly reliable humidity detection device. In order to achieve the purpose, this humidity detection device is provided with: a humidity sensor having a humidity detection unit and a temperature detection unit; a heating resistor that heats the humidity sensor; and a heating control unit that controls a heating temperature of the heating resistor. The humidity detection device is characterized in having a target temperature storage unit that stores target temperatures of the heating resistor, said target temperatures having been determined corresponding to temperatures and humidities.
Abstract translation: 本发明的目的是减少防止结露的负担，并提供高度可靠的湿度检测装置。 为了达到这个目的，该湿度检测装置具有：湿度传感器，其具有湿度检测单元和温度检测单元; 加热电阻器，加热湿度传感器; 以及加热控制单元，其控制加热电阻器的加热温度。 湿度检测装置的特征在于具有存储加热电阻器的目标温度的目标温度存储单元，所述目标温度已经根据温度和湿度确定。
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公开(公告)号：US20210278263A1
公开(公告)日：2021-09-09
申请号：US17256908
申请日：2019-06-20
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Hiroki NAKATSUCHI , Yasuo ONOSE , Takayuki YOGO , Ryotaro SHIMADA
Abstract: A flow-rate sensor is provided with a lead frame, a semiconductor chip that is disposed on one surface of the lead frame, and in which a diaphragm including a void portion on the lead frame side is formed, a flow rate detecting unit that is formed on the one surface including the diaphragm of the semiconductor chip, and resin that includes a flow passage opening portion exposing at least a portion of the flow rate detecting unit formed on the diaphragm, and covers the lead frame and the semiconductor chip. A lower side resin portion of the resin covering another surface side of the lead frame, on an opposite side to the one surface side thereof, has a thinned portion that is thinner than a periphery thereof in a region facing a peripheral edge portion of the diaphragm.
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公开(公告)号：US20210148743A1
公开(公告)日：2021-05-20
申请号：US16637654
申请日：2018-07-17
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Akira UENODAN , Takayuki YOGO , Tsubasa WATANABE , Takahiro MIKI , Shinobu TASHIRO , Hiroaki HOSHIKA
Abstract: Provided is a thermal-type flowmeter which can prevent a reduction of flow rate accuracy and reliability, and an increase of cost of the thermal-type flowmeter compared to the related art, and can add a function of an electrostatic scattering mechanism. The thermal-type flowmeter of the present invention includes a sub-passage into which part of a measurement target gas flowing in a main passage is taken, a flow rate detection element of a flow measurement unit which is disposed in the sub-passage, a circuit package which supports the flow rate detection element, and a substrate to which the circuit package is fixed. The flow rate detection element includes a detection surface to detect a flow rate of the measurement target gas. The detection surface is disposed to face the circuit substrate.
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公开(公告)号：US20200049538A1
公开(公告)日：2020-02-13
申请号：US16338836
申请日：2017-09-26
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Takayuki YOGO , Naoki SAITO , Hiroaki HOSHIKA , Takahiro MIKI
IPC: G01F1/684
Abstract: An air flow rate measurement device capable of suppressing disturbance of a flow of measured gas and reducing a characteristic influence due to water droplets flowing with intake air is realized. An edge 800 of the upstream side where air flows in a circuit board 400 on which a flow rate detection portion 602 is mounted is provided with a segmentation portion 801 to be a semicircular notch structure to segment the edge 800. Water droplets flowing with measured gas 30 can be captured by the segmentation portion 801 to inhibit the water droplets from arriving at the flow rate detection portion 602.
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公开(公告)号：US20190267736A1
公开(公告)日：2019-08-29
申请号：US16348208
申请日：2017-10-17
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Tsubasa WATANABE , Hiroaki HOSHIKA , Takayuki YOGO
Abstract: A semiconductor module includes: a circuit board on which a first semiconductor chip and a second semiconductor chip are mounted and includes a first through hole formed with a conductor foil therein; a press-fit terminal that is electrically connected to the conductor foil in the first through hole of the circuit board; and a second resin that is disposed on a surface side and a back surface side of the circuit board. Further, the press-fit terminal is provided with a pressure contact portion which is press-fitted into the first through hole and is electrically connected to the conductor foil in the first through hole, and the second resin on the surface side of the circuit board and the second resin on the back surface side of the circuit board are integrally formed via a second resin that is filled in the first through hole.
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