Patents by Inventor Takayuki FUKUZAWA
Takayuki FUKUZAWA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210076513Abstract: To provide an electronic controller by which a heat dissipation property for an electronic part can be enhanced. The electronic controller is an electronic controller including a circuit board on which an electronic part is mounted, and a housing accommodating the circuit board. A metallic plate facing the electronic part is provided at part of the housing, and an outer surface of the metallic plate is covered with a second resin film thinner than the metallic plate. An inner surface of the metallic plate is covered with a first resin film thinner than the metallic plate.Type: ApplicationFiled: January 8, 2019Publication date: March 11, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Takayuki FUKUZAWA, Yoshio KAWAI, Yujiro KANEKO
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Patent number: 10699917Abstract: An object is to provide the structure of an ECU enabling resin to be filled without deformation of an electronic circuit board. A resin-sealed vehicle-mounted control device includes: a circuit board; a base member housing the circuit board; and resin filled between the circuit board and the base member. The base member has: a base portion fixing the circuit board; and a side wall opposed to the side surface side of the circuit board. The resin is provided at least between the circuit board and the base portion. The side wall has an opening at any position on the side of the base portion from a position opposed to the side surface side of the electronic circuit board.Type: GrantFiled: February 1, 2017Date of Patent: June 30, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Maki Ito, Toshiaki Ishii, Yoshio Kawai, Nobutake Tsuyuno, Yujiro Kaneko, Takayuki Fukuzawa, Masahiko Asano
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Patent number: 10641409Abstract: Provided are a driver and a driver-integrated electric actuator that can suppress a temperature rise of the driver integrated with an electric actuator. A driver circuit of an electric actuator-integrated driver controls a current to be supplied to an electric actuator. A metal member (heat-conducting portion) conducts heat generated in the driver circuit. A driver sealing portion is fixed to the electric actuator and seals the driver circuit and the metal member. The metal member is extended to the electric actuator.Type: GrantFiled: July 27, 2016Date of Patent: May 5, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Takayuki Fukuzawa, Yoshio Kawai, Yujiro Kaneko
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Publication number: 20190080931Abstract: An object is to provide the structure of an ECU enabling resin to be filled without deformation of an electronic circuit board. A resin-sealed vehicle-mounted control device includes: a circuit board; a base member housing the circuit board; and resin filled between the circuit board and the base member. The base member has: a base portion fixing the circuit board; and a side wall opposed to the side surface side of the circuit board. The resin is provided at least between the circuit board and the base portion. The side wall has an opening at any position on the side of the base portion from a position opposed to the side surface side of the electronic circuit board.Type: ApplicationFiled: February 1, 2017Publication date: March 14, 2019Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Maki ITO, Toshiaki ISHII, Yoshio KAWAI, Nobutake TSUYUNO, Yujiro KANEKO, Takayuki FUKUZAWA, Masahiko ASANO
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Patent number: 10225939Abstract: Depending on the orientation by which a breathing filter is mounted in a vehicle, water can accumulate in the breathing filter, and prevent the pressure difference between the space inside a case and the outside air from being adjusted; therefore, the vehicular layout is limited. Also, because the filter is formed in the center of the case, electronic parts cannot be installed on substrates on the upper and lower surfaces of the filter, meaning that the substrate size and the case size will increase. In addition, the costs will increase. The structure of the present invention is characterized in that breathing paths are provided on the surfaces sandwiching a portion where a filter film is welded in the corner of a resin-side case of a vehicle-mounted electronic control device such as an engine control unit or an automatic transmission control unit, and in that the breathing paths are connected inside.Type: GrantFiled: January 10, 2018Date of Patent: March 5, 2019Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Hitoshi Furudate, Kiyotaka Kanno, Yoshio Kawai, Yoshiyasu Negishi, Takayuki Fukuzawa
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Publication number: 20180202571Abstract: Provided are a driver and a driver-integrated electric actuator that can suppress a temperature rise of the driver integrated with an electric actuator. A driver circuit of an electric actuator-integrated driver controls a current to be supplied to an electric actuator. A metal member (heat-conducting portion) conducts heat generated in the driver circuit. A driver sealing portion is fixed to the electric actuator and seals the driver circuit and the metal member. The metal member is extended to the electric actuator.Type: ApplicationFiled: July 27, 2016Publication date: July 19, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Takayuki FUKUZAWA, Yoshio KAWAI, Yujiro KANEKO
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Patent number: 10028412Abstract: In a configuration that a thermal grease is applied between a circuit board having an electronic component mounted thereon and a case body containing the board to thermally connect both by the thermal grease, the application has not been easy since the thermal grease is high in initial viscosity. A thermal grease is made of a material that has a viscosity not impeding applicability at the initial stage (before application), for example, a viscosity of about 50-400 (Pa·s), and that increases to about 600-3,000 (Pa·s) in viscosity after application.Type: GrantFiled: January 20, 2014Date of Patent: July 17, 2018Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yoshiyasu Negishi, Yoshio Kawai, Takayuki Fukuzawa
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Publication number: 20180132366Abstract: Depending on the orientation by which a breathing filter is mounted in a vehicle, water can accumulate in the breathing filter, and prevent the pressure difference between the space inside a case and the outside air from being adjusted; therefore, the vehicular layout is limited. Also, because the filter is formed in the center of the case, electronic parts cannot be installed on substrates on the upper and lower surfaces of the filter, meaning that the substrate size and the case size will increase. In addition, the costs will increase. The structure of the present invention is characterized in that breathing paths are provided on the surfaces sandwiching a portion where a filter film is welded in the corner of a resin-side case of a vehicle-mounted electronic control device such as an engine control unit or an automatic transmission control unit, and in that the breathing paths are connected inside.Type: ApplicationFiled: January 10, 2018Publication date: May 10, 2018Applicant: Hitachi Automotive Systems, Ltd.Inventors: Hitoshi FURUDATE, Kiyotaka KANNO, Yoshio KAWAI, Yoshiyasu NEGISHI, Takayuki FUKUZAWA
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Patent number: 9894785Abstract: Depending on the orientation by which a breathing filter is mounted in a vehicle, water can accumulate in the breathing filter, and prevent the pressure difference between the space inside a case and the outside air from being adjusted; therefore, the vehicular layout is limited. Also, because the filter is formed in the center of the case, electronic parts cannot be installed on substrates on the upper and lower surfaces of the filter, meaning that the substrate size and the case size will increase. In addition, the costs will increase. The structure of the present invention is characterized in that breathing paths are provided on the surfaces sandwiching a portion where a filter film is welded in the corner of a resin-side case of a vehicle-mounted electronic control device such as an engine control unit or an automatic transmission control unit, and in that the breathing paths are connected inside.Type: GrantFiled: November 12, 2014Date of Patent: February 13, 2018Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Hitoshi Furudate, Kiyotaka Kanno, Yoshio Kawai, Yoshiyasu Negishi, Takayuki Fukuzawa
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Patent number: 9781849Abstract: An electronic control device (10) includes a housing having a plurality of housing members (1) joined together, a housing vent hole (2) formed through the housing member (1) so as to extend in a thickness direction of the housing member, a protection wall (3) covering an outer opening (2b) of the housing vent hole (2), with a gap (3b) left between the protection wall (3) and the outer opening (2b), a protection-wall vent hole (3a) formed in the protection wall (3) at a position apart from the housing vent hole (2) so as to extend from the gap (3b) in a radial direction of the housing vent hole (2), and an air-permeable waterproof membrane (5) fixed to an inner opening (2a) of the housing vent hole (2). A vent passage (6) with a bent part (6a) is formed between the air-permeable waterproof membrane (5) and the protection-wall vent hole (3a).Type: GrantFiled: September 12, 2013Date of Patent: October 3, 2017Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yoshiyasu Negishi, Hitoshi Furudate, Takayuki Fukuzawa, Kentaro Yamanaka
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Publication number: 20160295721Abstract: Depending on the orientation by which a breathing filter is mounted in a vehicle, water can accumulate in the breathing filter, and prevent the pressure difference between the space inside a case and the outside air from being adjusted; therefore, the vehicular layout is limited. Also, because the filter is formed in the center of the case, electronic parts cannot be installed on substrates on the upper and lower surfaces of the filter, meaning that the substrate size and the case size will increase. In addition, the costs will increase. The structure of the present invention is characterized in that breathing paths are provided on the surfaces sandwiching a portion where a filter film is welded in the corner of a resin-side case of a vehicle-mounted electronic control device such as an engine control unit or an automatic transmission control unit, and in that the breathing paths are connected inside.Type: ApplicationFiled: November 12, 2014Publication date: October 6, 2016Applicant: Hitachi Automotive Systems, Ltd.Inventors: Hitoshi FURUDATE, Kiyotaka KANNO, Yoshio KAWAI, Yoshiyasu NEGISHI, Takayuki FUKUZAWA
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Patent number: 9277681Abstract: An electronic control apparatus includes housing members, and a circuit board. At least one of the housing members is opposed to a heat-generating region which is heated by the heat-generating electronic component. A heat radiating portion of the housing member includes a convex portion protruding from an inner wall surface at a location opposed to the heat-generating region, and a concave portion opened to an outer wall surface at a location shifted from the convex portion in a thickness direction. The convex portion is close to the heat-generating region through a clearance. The concave portion has a lateral wall formed in a tapered shape such that an opening area of the concave portion is larger than a bottom area of the concave portion. A thickness of the heat radiating portion is smaller than a thickness of a region peripheral to the heat radiating portion in the housing member.Type: GrantFiled: March 4, 2013Date of Patent: March 1, 2016Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yoshio Kawai, Takayuki Fukuzawa
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Publication number: 20160021789Abstract: In a configuration that a thermal grease is applied between a circuit board having an electronic component mounted thereon and a case body containing the board to thermally connect both by the thermal grease, the application has not been easy since the thermal grease is high in initial viscosity. A thermal grease is made of a material that has a viscosity not impeding applicability at the initial stage (before application), for example, a viscosity of about 50-400 (Pa·s), and that increases to about 600-3,000 (Pa·s) in viscosity after application.Type: ApplicationFiled: January 20, 2014Publication date: January 21, 2016Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yoshiyasu NEGISHI, Yoshio KAWAI, Takayuki FUKUZAWA
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Publication number: 20150208525Abstract: An electronic control device (10) includes a housing having a plurality of housing members (1) joined together, a housing vent hole (2) formed through the housing member (1) so as to extend in a thickness direction of the housing member, a protection wall (3) covering an outer opening (2b) of the housing vent hole (2), with a gap (3b) left between the protection wall (3) and the outer opening (2b), a protection-wall vent hole (3a) formed in the protection wall (3) at a position apart from the housing vent hole (2) so as to extend from the gap (3b) in a radial direction of the housing vent hole (2), and an air-permeable waterproof membrane (5) fixed to an inner opening (2a) of the housing vent hole (2). A vent passage (6) with a bent part (6a) is formed between the air-permeable waterproof membrane (5) and the protection-wall vent hole (3a).Type: ApplicationFiled: September 12, 2013Publication date: July 23, 2015Inventors: Yoshiyasu Negishi, Hitoshi Furudate, Takayuki Fukuzawa, Kentaro Yamanaka
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Patent number: 8908380Abstract: An electrical control unit comprises a case having a groove on a first contact surface thereof, a cover having a protrusion on a second contact surface thereof, a printed wiring board received in a board receiving space defined between the case and the cover, and an adhesive received in the groove, wherein when the cover is put on the case having the protrusion inserted into the groove, the adhesive in a still soft condition is forced to move toward a space between the first and second contact surfaces for bonding the same, and wherein when the printed wiring board is properly put in the board receiving space, a peripheral outer surface of the board serves as an extra part of an inside wall of the groove.Type: GrantFiled: November 29, 2011Date of Patent: December 9, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventors: Hironori Ohhashi, Takayuki Fukuzawa
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Patent number: 8797742Abstract: An electronic controller for a vehicle includes a circuit board on which an electronic component is mounted and a metal housing accommodating the circuit board therein. The housing includes an inner face and an outer face, at least one of the inner face and the outer face being subjected to surface treatment facilitating heat absorption and dissipation. The inner face of the housing further includes a protruding portion extending to a heating portion of the circuit board so as to be close to the heating portion, or includes concavities and convexities at at least a part thereof opposed to a surface of the circuit board on which the electronic component is mounted so as to increase a surface area of the inner face.Type: GrantFiled: March 9, 2011Date of Patent: August 5, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yoshio Kawai, Eiji Ichikawa, Takayuki Fukuzawa
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Publication number: 20130250521Abstract: An electronic control apparatus includes housing members, and a circuit board. At least one of the housing members is opposed to a heat-generating region which is heated by the heat-generating electronic component. A heat radiating portion of the housing member includes a convex portion protruding from an inner wall surface at a location opposed to the heat-generating region, and a concave portion opened to an outer wall surface at a location shifted from the convex portion in a thickness direction. The convex portion is close to the heat-generating region through a clearance. The concave portion has a lateral wall formed in a tapered shape such that an opening area of the concave portion is larger than a bottom area of the concave portion. A thickness of the heat radiating portion is smaller than a thickness of a region peripheral to the heat radiating portion in the housing member.Type: ApplicationFiled: March 4, 2013Publication date: September 26, 2013Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yoshio KAWAI, Takayuki FUKUZAWA
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Publication number: 20120320544Abstract: An electrical control unit comprises a case having a groove on a first contact surface thereof, a cover having a protrusion on a second contact surface thereof, a printed wiring board received in a board receiving space defined between the case and the cover, and an adhesive received in the groove, wherein when the cover is put on the case having the protrusion inserted into the groove, the adhesive in a still soft condition is forced to move toward a space between the first and second contact surfaces for bonding the same, and wherein when the printed wiring board is properly put in the board receiving space, a peripheral outer surface of the board serves as an extra part of an inside wall of the groove.Type: ApplicationFiled: November 29, 2011Publication date: December 20, 2012Inventors: Hironori Ohhashi, Takayuki Fukuzawa
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Publication number: 20110228498Abstract: An electronic controller for a vehicle includes a circuit board on which an electronic component is mounted and a metal housing accommodating the circuit board therein. The housing includes an inner face and an outer face, at least one of the inner face and the outer face being subjected to surface treatment facilitating heat absorption and dissipation. The inner face of the housing further includes a protruding portion extending to a heating portion of the circuit board so as to be close to the heating portion, or includes concavities and convexities at at least a part thereof opposed to a surface of the circuit board on which the electronic component is mounted so as to increase a surface area of the inner face.Type: ApplicationFiled: March 9, 2011Publication date: September 22, 2011Inventors: Yoshio KAWAI, Eiji ICHIKAWA, Takayuki FUKUZAWA