Patents by Inventor Narutoshi YAMADA
Narutoshi YAMADA 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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Patent number: 11979066Abstract: A first circuit board 16 and a second circuit board 17, each of which have mounted thereon circuit components for controlling and driving an electric motor, are stacked with a space left therebetween such that one board surface of the first circuit board and one board surface of the second circuit board are opposed to and face each other in the direction of a rotation shaft 14 of the electric motor. In a state that the first circuit board 16 and the second circuit board 17 are attached to the motor housing, a receptacle connector 28 mounted on the first circuit board and a plug connector 34 mounted on the second circuit board form a “board-to-board connector” by which the circuit components of the first and second circuit boards are electrically connected.Type: GrantFiled: August 18, 2020Date of Patent: May 7, 2024Assignee: HITACHI ASTEMO, LTD.Inventors: Kazuhiko Nakano, Takuro Kanazawa, Narutoshi Yamada, Tomohiro Fukuda
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Publication number: 20240147621Abstract: A manufacturing method of a circuit board including an annular land portion around a through hole through which a terminal that is an object of a soldering penetrates, and that is soldered on the land portion by a soldering process with a solder supply, the manufacturing method includes: previously forming a preliminary solder at a position opposite to a supply position of the solder in the land portion with respect to the through hole before the soldering process.Type: ApplicationFiled: December 1, 2021Publication date: May 2, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Narutoshi YAMADA, Yuuichi YANAGISAWA, Takahiro MAKIKO
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Publication number: 20240030776Abstract: One first connector head 21A and one second connector head 22A face each other, in the plane view of a connector terminal assembly 19, with the axial line of an output shaft 12, which is the axial line of the motor rotation shaft of an electric motor, therebetween without being offset from each other. The other first connector head 21B and the other second connector head 22B face each other, in the plane view of the connector terminal assembly 19, with the axial line of the output shaft 12, which is the axial line of the motor rotation shaft of the electric motor, therebetween without being offset from each other.Type: ApplicationFiled: June 28, 2021Publication date: January 25, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Narutoshi YAMADA, Takuro KANAZAWA, Kazuhiko NAKANO, Hideyuki HARA
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Publication number: 20240015900Abstract: An electronic control device comprises a circuit board on which electronic components are mounted, a connector block integrated with a connector that is electrically connected to the circuit board, a base to which the circuit board is fixed, and a cover that can be fitted to circumferential grooves that are formed in the base and the connector block respectively so that a connecting portion of the connector protrudes to the outside while accommodating the circuit board that is fixed to the base. Furthermore, a ventilation hole is formed in a section of the connector block excluding a formation position of the connector so as to communicate an inner space with an outer space of the cover, and a sealing material that seals the ventilation hole is further provided.Type: ApplicationFiled: November 18, 2021Publication date: January 11, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Kazuhiko NAKANO, Keiji HAMADA, Narutoshi YAMADA
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Publication number: 20230271645Abstract: A motor drive device includes a first drive system in which a first power supply circuit and a first central processing unit are arranged in order in a first direction, and a second drive system in which a second power supply circuit and a second central processing unit are arranged in order in a second direction. The first direction and the second direction are opposite to each other. Calling a straight line passing between the first power supply circuit and the first central processing unit, perpendicular to the first direction, a first virtual line and calling a straight line passing between the second power supply circuit and the second central processing unit, perpendicular to the second direction, a second virtual line, the first central processing unit and the second central processing unit are disposed within an area sandwiched by the first virtual line and the second virtual line.Type: ApplicationFiled: May 19, 2021Publication date: August 31, 2023Applicant: HITACHI ASTEMO, LTD.Inventors: Akira ISHII, Keiji HAMADA, Narutoshi YAMADA
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Patent number: 11647588Abstract: A circuit substrate (3) is provided with first and second rigid parts (11, 12) having six metal foil layers, and a thin flexible part (13) having two metal foil layers connecting the two rigid parts. A ground wiring (51) which is shaped like a wide strip is formed on the surface metal foil layer, and a plurality of inter-rigid-part wirings (55) are formed on the inner metal foil layer in parallel lines. Outer edges (51a) of the ground wiring (51) are positioned closer to side edges (13a) of the flexible part (13) than to the inter-rigid-part wirings (55). The ground wiring (51) protects the inter-rigid-part wirings (55) from cracks.Type: GrantFiled: July 1, 2020Date of Patent: May 9, 2023Assignee: HITACHI ASTEMO, LTD.Inventors: Hideyuki Hara, Takuro Kanazawa, Narutoshi Yamada
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Publication number: 20230011559Abstract: Provided are an electronic drive device and an electronic steering device, in each of which: a mounting substrate has one surface as a first surface on which a first heat generating component is mounted and the other surface as a second surface on which a second heat generating component is mounted; a first heat dissipation member is arranged in contact with the second surface at a position corresponding to a mounted position of the first heat generating component such that heat generated by the first heat generating component is dissipated to a motor housing; and a second heat dissipation member is arranged in contact with the first surface at a position corresponding to a mounted position of the second heat generating component such that heat generated by the second heat generating component is dissipated to a cover.Type: ApplicationFiled: December 7, 2020Publication date: January 12, 2023Applicant: HITACHI ASTEMO, LTD.Inventors: Narutoshi YAMADA, Takuro KANAZAWA, Kazuhiko NAKANO, Akira ISHII
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Publication number: 20220278594Abstract: A first circuit board 16 and a second circuit board 17, each of which have mounted thereon circuit components for controlling and driving an electric motor, are stacked with a space left therebetween such that one board surface of the first circuit board and one board surface of the second circuit board are opposed to and face each other in the direction of a rotation shaft 14 of the electric motor. In a state that the first circuit board 16 and the second circuit board 17 are attached to the motor housing, a receptacle connector 28 mounted on the first circuit board and a plug connector 34 mounted on the second circuit board form a “board-to-board connector” by which the circuit components of the first and second circuit boards are electrically connected.Type: ApplicationFiled: August 18, 2020Publication date: September 1, 2022Applicant: HITACHI ASTEMO, LTD.Inventors: Kazuhiko NAKANO, Takuro KANAZAWA, Narutoshi YAMADA, Tomohiro FUKUDA
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Publication number: 20220264746Abstract: A circuit substrate (3) is provided with first and second rigid parts (11, 12) having six metal foil layers, and a thin flexible part (13) having two metal foil layers connecting the two rigid parts. A ground wiring (51) which is shaped like a wide strip is formed on the surface metal foil layer, and a plurality of inter-rigid-part wirings (55) are formed on the inner metal foil layer in parallel lines. Outer edges (51a) of the ground wiring (51) are positioned closer to side edges (13a) of the flexible part (13) than to the inter-rigid-part wirings (55). The ground wiring (51) protects the inter-rigid-part wirings (55) from cracks.Type: ApplicationFiled: July 1, 2020Publication date: August 18, 2022Applicant: HITACHI ASTEMO, LTD.Inventors: Hideyuki HARA, Takuro KANAZAWA, Narutoshi YAMADA
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Publication number: 20210265899Abstract: Board supporting body 21A supporting circuit board 18S is provided with first terminal engaging hole 29, and circuit board 18S located so as to be adjacent to board supporting body 21A is provided with second terminal engaging hole 25. First elastic engaging portion 32 elastically engaged with first terminal engaging hole 29, and second elastic engaging portion 33 elastically engaged with second terminal engaging hole 25, are formed at press-fitting type connector terminal 27. Circuit board and board supporting body are fixedly connected together with first and second elastic engaging portions 32, 33 being elastically engaged with first and second terminal engaging holes 29, 25 respectively in a state in which press-fitting type connector terminal 27 is inserted into first and second terminal engaging holes 29, 25. With this, electrical connection of press-fitting type connector terminal and fixing (including direct or indirect fixing) of circuit board can be easily realized.Type: ApplicationFiled: June 21, 2019Publication date: August 26, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Narutoshi YAMADA, Takuro KANAZAWA
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Publication number: 20210261187Abstract: An electric drive device includes: an electronic control section including a first electronic control section and a second electronic control section which constitute a redundant system, the first electronic control section and the second electronic control section being provided with a first control section side connecter and a second control section side connecter which have an identical configuration, and the first non-control section side connecter being engaged with the first control section side connecter, and the second non-control section side connecter being engaged with the second control section side connecter to correspond to the lengths of the first harness and the second harness.Type: ApplicationFiled: June 21, 2019Publication date: August 26, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Akira ISHII, Narutoshi YAMADA, Hideyuki HARA, Takuro KANAZAWA