Patents by Inventor Michihito Watarai

Michihito Watarai 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).

  • Patent number: 11758667
    Abstract: An electronic control unit (1) includes a connector (2), the connector includes a connector main body (21) and a plurality of terminals (23), the connector main body includes an attachment surface (24) and a seal arrangement portion (210) on a surface (25), the seal arrangement portion includes a first seal arrangement portion (211) formed in an arrangement direction of the terminals, and a second seal arrangement portion (212) that is continuous with both end portions (213) of the first seal arrangement portion and is inclined toward the electronic control board side as it goes toward the other end side facing one end side of an electronic control board (6), the first seal arrangement portion includes a plurality of predetermined portions (2112) formed so as to be directed toward the electronic control board side from a center side of the first seal arrangement portion toward both end sides of the first seal arrangement portion at both end portions of the first seal arrangement portion, the cover (3) include
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: September 12, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Masato Saito, Michihito Watarai
  • Publication number: 20230232589
    Abstract: An electronic control device includes a housing including a first region in which heat dissipation fins are formed on one side and an electronic component generating the largest amount of heat is in thermal contact with the other side, and a second region in which an electronic component is in thermal contact with the one side and the other side.
    Type: Application
    Filed: May 20, 2021
    Publication date: July 20, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Ryujo SUGAHARA, Eiji ICHIKAWA, Hideyuki SAKAMOTO, Daisuke TANAKA, Hidetatsu YAMAMOTO, Michihito WATARAI, Minami TERANISHI
  • Publication number: 20230209738
    Abstract: An electronic control device includes: a first board on which a bus bridge and an external communication connector are mounted; a second board on which an accelerator SoC is mounted, the second board being electrically connected to the first board; and a B-to-B connector capable of performing signal transmission between the bus bridge and the accelerator SoC.
    Type: Application
    Filed: May 20, 2021
    Publication date: June 29, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Ryujo SUGAHARA, Hidetatsu YAMAMOTO, Daisuke TANAKA, Eiji ICHIKAWA, Michihito WATARAI, Hideyuki SAKAMOTO
  • Publication number: 20230156948
    Abstract: An object of the present invention is to provide an electronic control unit that curbs overflow of a sealant at a three-way junction of the sealant in the vicinity of a connector. The electronic control unit includes a first seal part 51 that seals between a base member 40 and a cover member 30, a second seal part 52 that seals between the base member 40 and a connector housing 20, and a third seal part 53 that is connected to the first seal part 51 and the second seal part 52 and seals between the cover member 30 and the connector housing 20. In a part (three-way junction) where the first seal part 51, the second seal part 52, and the third seal part 53 intersect, a space part 41JA1 that is connected to the recessed part 41 and recessed further from a surface forming the recessed part 41 is formed.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 18, 2023
    Inventors: Masato SAITO, Michihito WATARAI
  • Publication number: 20220408572
    Abstract: An electronic device maintains a pressure adjustment function of a breathable filter. The electronic device includes a connector that includes a connector housing that closes an opening portion of a housing accommodating a circuit board and holds a connection terminal enabling electric connection of the circuit board to an external connector and a communication hole that penetrates the connector housing and allows an internal space and an external space of the housing to communicate with each other, and a filter attached to the connector housing to cover a first opening that opens in the communication hole on an internal space side of the housing. The connector housing has a shielding wall surrounding the periphery of the second opening of the communication hole that opens to the external space side of the housing and protrudes toward the external space side of the housing from the second opening of the communication hole.
    Type: Application
    Filed: October 20, 2020
    Publication date: December 22, 2022
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Masato SAITO, Michihito WATARAI
  • Publication number: 20220225516
    Abstract: An electronic control unit (1) includes a connector (2), the connector includes a connector main body (21) and a plurality of terminals (23), the connector main body includes an attachment surface (24) and a seal arrangement portion (210) on a surface (25), the seal arrangement portion includes a first seal arrangement portion (211) formed in an arrangement direction of the terminals, and a second seal arrangement portion (212) that is continuous with both end portions (213) of the first seal arrangement portion and is inclined toward the electronic control board side as it goes toward the other end side facing one end side of an electronic control board (6), the first seal arrangement portion includes a plurality of predetermined portions (2112) formed so as to be directed toward the electronic control board side from a center side of the first seal arrangement portion toward both end sides of the first seal arrangement portion at both end portions of the first seal arrangement portion, the cover (3) include
    Type: Application
    Filed: May 15, 2020
    Publication date: July 14, 2022
    Inventors: Masato SAITO, Michihito WATARAI
  • Patent number: 11171472
    Abstract: To make it possible to enhance waterproofness of a vent hole when an electronic controller is mounted on an automobile. The electronic controller includes a waterproof case that accommodates a printed circuit board with electronic parts mounted thereon, and a connector that electrically connects the printed circuit board and an external apparatus to each other, the electronic controller being mounted on the automobile in a posture having the connector directed downward. The waterproof case has an inclined surface that is smaller as the distance from a bottom surface is more on the connector side, and the inclined surface is formed with a vent hole that is closed with the breathing filter.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: November 9, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Toru Kobayashi, Masato Saito, Michihito Watarai
  • Publication number: 20210104879
    Abstract: To make it possible to enhance waterproofness of a vent hole when an electronic controller is mounted on an automobile. The electronic controller includes a waterproof case that accommodates a printed circuit board with electronic parts mounted thereon, and a connector that electrically connects the printed circuit board and an external apparatus to each other, the electronic controller being mounted on the automobile in a posture having the connector directed downward. The waterproof case has an inclined surface that is smaller as the distance from a bottom surface is more on the connector side, and the inclined surface is formed with a vent hole that is closed with the breathing filter.
    Type: Application
    Filed: December 4, 2018
    Publication date: April 8, 2021
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Toru KOBAYASHI, Masato SAITO, Michihito WATARAI
  • Patent number: 9593695
    Abstract: A fan device mounting structure is provided, which is capable of sufficiently suppressing transmission of vibrations in X, Y, and Z directions generated from a fan device, that is, all translational-direction vibrations and all axial-rotation-direction vibrations, to a chassis in which the fan device is mounted. The fan device mounting structure includes: a fan device 1; a chassis 4 in which the fan device 1 is mounted; and at least a pair of flat springs 2, each of which has its one end attached to the fan device 1 and extending outwards from the fan device 1 and bending and has the other end attached to outside a fan device located area, wherein both opposite faces of the fan device 1 facing each other are supported by the respective flat springs 2 and attached to the chassis 4 at positions separate from each other.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: March 14, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Hamaguchi, Michihito Watarai
  • Publication number: 20140234100
    Abstract: A fan device mounting structure is provided, which is capable of sufficiently suppressing transmission of vibrations in X, Y, and Z directions generated from a fan device, that is, all translational-direction vibrations and all axial-rotation-direction vibrations, to a chassis in which the fan device is mounted. The fan device mounting structure includes: a fan device 1; a chassis 4 in which the fan device 1 is mounted; and at least a pair of flat springs 2, each of which has its one end attached to the fan device 1 and extending outwards from the fan device 1 and bending and has the other end attached to outside a fan device located area, wherein both opposite faces of the fan device 1 facing each other are supported by the respective flat springs 2 and attached to the chassis 4 at positions separate from each other.
    Type: Application
    Filed: June 16, 2011
    Publication date: August 21, 2014
    Applicant: HITACHI, LTD.
    Inventors: Takashi Hamaguchi, Michihito Watarai
  • Patent number: 8270181
    Abstract: A mechanism for locking boards with various components mounted on them onto the chassis of an electronic device is composed of brackets, which are attached to these boards and which are to be mounted onto the chassis at a series of fixation points provided at certain intervals on it, and a locking element having a number of tongue-shaped pieces. Locking is accomplished by inserting each of these tongue-shaped pieces between a pair of adjacent brackets so that it engages with them. This mechanism requires fewer components than conventional mechanisms and is also easier to operate.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: September 18, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Fukui, Michihito Watarai
  • Publication number: 20090262508
    Abstract: A mechanism for locking boards with various components mounted on them onto the chassis of an electronic device is composed of brackets, which are attached to these boards and which are to be mounted onto the chassis at a series of fixation points provided at certain intervals on it, and a locking element having a number of tongue-shaped pieces. Locking is accomplished by inserting each of these tongue-shaped pieces between a pair of adjacent brackets so that it engages with them. This mechanism requires fewer components than conventional mechanisms and is also easier to operate.
    Type: Application
    Filed: December 16, 2008
    Publication date: October 22, 2009
    Inventors: Kazuo Fukui, Michihito Watarai
  • Patent number: 6285546
    Abstract: An electronic device has a frame and a back board having plural logical units and power supply units mounted thereon. The logical units and the power supply units are alternately located on both sides of the back board in the center of the frame so that the power supply units mounted on one side of the back board may feed a power to the closest logical units mounted on the other side. Further, the air flow paths to be circulated through the logical units and the power supply units are formed so that each unit may be efficiently cooled by the air fed by an air fan unit. As a result, the feeding voltage becomes uniform and the cooling efficiency is improved.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: September 4, 2001
    Assignees: Hitachi, Ltd., Hitachi Information Technology Co., Ltd.
    Inventors: Michihito Watarai, Yutaka Hayashi, Mitsuo Miyamoto, Kazuhiro Matsuo, Eiji Kadomoto, Koji Nakayama, Akihiro Sakurai, Shigeyasu Tsubaki
  • Patent number: 5558493
    Abstract: A forced air cooling apparatus having a blower for blowing air taken in from an intake surface or inlet of the blower to be blown against an electronic device in an installation wherein the blower is mounted for operation on a casing or a rack, and in which the apparatus has a flow regulating plate vertically intersecting the intake surface that is installed immediately before the intake surface. With this construction, eddy air current flow in the vicinity of the intake surface is prevented and the cooling ability obtained from the blower is optimized to thereby attain the effect that the electronic devices can be efficiently cooled without requiring the same separation distance between an intake surface of the blower and a wall surface of the frame or casing in which the blower is installed, as compared with a conventional installation of the same equipment in the same casing without the flow regulating plate.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 24, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Yutaka Hayashi, Mitsuo Miyamoto, Michihito Watarai, Takayuki Atarashi, Tetsuya Tanaka, Toshio Hatada, Yoshihiro Takada, Takahiro Daikoku
  • Patent number: D444148
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: June 26, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Sayuri Hashizume, Takashi Yamamoto, Takashi Ohwada, Toshiyuki Utsuki, Kenta Kumagai, Mitsuo Miyamoto, Fumio Kishida, Michihito Watarai