Patents by Inventor Hiroyuki Ikuta
Hiroyuki Ikuta 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: 20180221940Abstract: An up-thawing continuous casting method includes drawing up molten metal (M1) held in a holding furnace (101), through a shape determining member (102) that determines a sectional shape of a cast casting (M3). The sectional shape determined by the shape determining member (102) includes a round-cornered portion, and a value (Rf) of a curvature radius of the round-cornered portion that is determined by the shape determining member (102) is smaller than a design value (Rt) of a curvature radius of a round-cornered portion of the casting (M3).Type: ApplicationFiled: March 17, 2015Publication date: August 9, 2018Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki IKUTA, Yuto TANAKA, Naoki SUGIURA
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Publication number: 20180214938Abstract: An analysis method for analyzing deformation of a casting in a die casting process includes obtaining a first die frictional stress exerted by a first die on the casting in a mold opening step, and calculating deformation of the casting in the mold opening step using the first die frictional stress. A predetermined frictional coefficient function is selected from a plurality of frictional coefficient functions based on casting conditions and lubrication conditions. A frictional coefficient at each portion of the casting is output by inputting a temperature of a contact surface between the casting and the first die and a contact surface pressure therebetween into the selected predetermined frictional coefficient function. The first die frictional stress acting on each portion of the casting is obtained by multiplying the contact surface pressure and the frictional coefficient.Type: ApplicationFiled: January 23, 2018Publication date: August 2, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shoichi TSUCHIYA, Hiroyuki IKUTA
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Patent number: 9876404Abstract: The rotor includes a shaft, and a rotor core that is fitted and fixed to the shaft. The shaft includes a knurled portion on an end side and a small-diameter portion formed in a tip side via a first stepped surface. The rotor core includes a small diameter hole formed in a tip side end portion of the fitting hole press-fitted onto the small diameter portion, a large diameter hole formed in an end side of the small diameter hole via a second stepped surface, and a press-fitting portion press-fitted onto the knurled portion and is formed on an end side end portion of the large diameter hole. A space part is disposed between the first stepped surface and the second stepped surface.Type: GrantFiled: August 20, 2015Date of Patent: January 23, 2018Assignee: DENSO CORPORATIONInventor: Hiroyuki Ikuta
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Patent number: 9780626Abstract: A rotor includes a shaft having knurled portions and a rotor core having a fitting-recess that is fitted and fixed to the knurled portions. The shaft has a small diameter portion on one end of the knurled portions and a flange portion on another end. The rotor core has a small diameter hole on one end of the fitting-recess. When the fitting-recess is fitted into the knurled portions, an end face in the other end of the rotor core abuts the flange portion, while a stepped surface between the fitting-recess and the small diameter hole contacts with an end face in the one end of the knurled portions. Thus, a filler is sealed in gaps formed between the knurled portions and an internal wall of the fitting-recess.Type: GrantFiled: June 5, 2015Date of Patent: October 3, 2017Assignee: DENSO CORPORATIONInventor: Hiroyuki Ikuta
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Publication number: 20170241370Abstract: An intake-port core includes a body part having the same outer shape as that of the intake port, a port-injector part having the same outer shape as that of a port-injector insertion part, and an extending part. A cooling-water flow-passage core includes a water-jacket core having the same outer shape as that of a water jacket. The intake-port core is inserted from the extending part thereof into the water-jacket core so as to join the cooling-water flow-passage core to the intake-port core. Thereafter, a core print part that is a separate body from the intake-port core is joined to the intake-port core.Type: ApplicationFiled: February 21, 2017Publication date: August 24, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusei KUSAKA, Kazuya MIKASHIMA, Hiroyuki IKUTA
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Publication number: 20170133204Abstract: There is provided a member for a plasma processing apparatus, the member constituting the plasma processing apparatus configured to generate plasma in a processing space of a processing container and to perform plasma processing on an object to be processed. The member includes a face of the member exposed to the plasma and coated with a protection film. The protection film includes a columnar structure having a plurality of column-shaped portions in substantially cylindrical shapes extending in a thickness direction of the film. The plurality of column-shaped portions is adjacent to one another without gaps therebetween.Type: ApplicationFiled: November 7, 2016Publication date: May 11, 2017Inventors: Kazuki MOYAMA, Toyohiro KAMADA, Hiroyuki IKUTA, Yuya MINOURA
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Patent number: 9583987Abstract: A stator includes a hollow cylindrical stator core having stator teeth and slots. The stator teeth each extend radially inward and are circumferentially spaced from one another. Each of the slots is formed between one circumferentially-facing pair of the stator teeth and opens at the radially inner periphery of the stator core. Each of the stator teeth has a distal end portion that includes a slit, a base part and an oblique part. The slit is formed in a distal end surface of the stator tooth and extends axially. The base part and the oblique part are formed respectively on opposite circumferential sides of the slit. The base part extends radially inward to have a distal end surface that makes up an inner-diameter surface of the stator core. The oblique part is bent toward an adjacent slot so as to extend obliquely with respect to the base part.Type: GrantFiled: January 18, 2012Date of Patent: February 28, 2017Assignee: DENSO CORPORATIONInventors: Hiroyuki Ikuta, Junichi Nakazono, Kuniharu Teshima, Yuusuke Hara
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Publication number: 20160296998Abstract: A pulling-up-type continuous casting apparatus according to an aspect of the present invention includes a molten-metal holding furnace that holds molten metal, a shape defining member disposed in a vicinity of a molten-metal surface in the molten-metal holding furnace, the shape defining member being configured to define a cross-sectional shape of a cast-metal article to be cast as the held molten metal passes through the shape defining member, and an actuator that applies a pressure to the molten metal held in the molten-metal holding furnace and thereby makes the held molten metal pass through the shape defining member.Type: ApplicationFiled: October 9, 2014Publication date: October 13, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki IKUTA, Naoaki SUGIURA
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Patent number: 9397541Abstract: A stator includes a hollow cylindrical stator core comprised of a plurality of stator core segments, a stator coil mounted on the stator core, and an outer cylinder that is fitted on die radially outer surfaces of the stator core segments so as to fasten the stator core segments together. The stator core has a recess formed in the radially outer surface of one of the stator core segments. The outer cylinder has a slit that radially penetrates the outer cylinder to connect the radially outer and inner surfaces of the outer cylinder and an engaging portion that adjoins the slit. The engaging portion of the outer cylinder is plastically deformed radially inward into the recess of the stator core so as to abut and thereby engage with side walls of the recess which face the engaging portion.Type: GrantFiled: January 11, 2012Date of Patent: July 19, 2016Assignee: DENSO CORPORATIONInventors: Hiroyuki Ikuta, Yuusuke Hara, Kuniharu Teshima
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Patent number: 9287741Abstract: A stator includes a hollow cylindrical stator core comprised of a plurality of stator core segments and an outer cylinder fitted on the radially outer surface of the stator core. The stator core has a recess formed in the radially outer surface and the recess has an engaging wall surface that extends in both the axial and radial directions of the stator core. The outer cylinder has a fastening portion for fastening the outer cylinder to the stator core. The fastening portion is formed to be partially surrounded by a plurality of first slits and a second slit. The fastening portion is bent radially inward to have a second slit-side end part thereof received in the recess of the stator core. Further, the second slit-side end part of the fastening portion has a distal end engaging with the engaging wall surface of the recess of the stator core.Type: GrantFiled: June 2, 2014Date of Patent: March 15, 2016Assignee: DENSO CORPORATIONInventors: Kazuhiro Nobata, Toshiaki Oohara, Youzou Matsui, Yoshiyasu Kozaki, Hiroyuki Ikuta
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Publication number: 20160056677Abstract: The rotor includes a shaft, and a rotor core that is fitted and fixed to the shaft. The shaft includes a knurled portion on an end side and a small-diameter portion formed in a tip side via a first stepped surface. The rotor core includes a small diameter hole formed in a tip side end portion of the fitting hole press-fitted onto the small diameter portion, a large diameter hole formed in an end side of the small diameter hole via a second stepped surface, and a press-fitting portion press-fitted onto the knurled portion and is formed on an end side end portion of the large diameter hole. A space part is disposed between the first stepped surface and the second stepped surface.Type: ApplicationFiled: August 20, 2015Publication date: February 25, 2016Inventor: Hiroyuki IKUTA
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Publication number: 20150357869Abstract: A rotor includes a shaft having knurled portions and a rotor core having a fitting-recess that is fitted and fixed to the knurled portions. The shaft has a small diameter portion on one end of the knurled portions and a flange portion on another end. The rotor core has a small diameter hole on one end of the fitting-recess. When the fitting-recess is fitted into the knurled portions, an end face in the other end of the rotor core abuts the flange portion, while a stepped surface between the fitting-recess and the small diameter hole contacts with an end face in the one end of the knurled portions. Thus, a filler is sealed in gaps formed between the knurled portions and an internal wall of the fitting-recess.Type: ApplicationFiled: June 5, 2015Publication date: December 10, 2015Inventor: Hiroyuki IKUTA
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Patent number: 9136746Abstract: A stator includes a hollow cylindrical stator core comprised of a plurality of stator core segments, a stator coil mounted on the stator core, and an outer cylinder that is fitted on the radially outer surfaces of the stator core segments so as to fasten the stator core segments together. The stator core has a recess formed in the radially outer surface of one of the stator core segments. The outer cylinder has a slit that radially penetrates the outer cylinder to connect the radially outer and inner surfaces of the outer cylinder and an engaging portion that adjoins the slit. The engaging portion of the outer cylinder is plastically deformed radially inward into the recess of the stator core so as to abut and thereby engage with side walls of the recess which face the engaging portion.Type: GrantFiled: June 26, 2014Date of Patent: September 15, 2015Assignee: DENSO CORPORATIONInventors: Hiroyuki Ikuta, Yuusuke Hara, Nobuyuki Kimura, Kuniharu Teshima
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Patent number: 9124156Abstract: The rotor for an electric rotating machine includes a rotor core fixed to a rotating shaft and formed with at least one magnet accommodating hole, a magnet accommodated in the magnet accommodating hole, a resin portion filled in the magnet accommodating hole accommodating the magnet, a first end plate fixed to the rotating shaft at one axial side of the rotor core, and a second end plate fixed to the rotating shaft at the other axial side of the rotor core. The axial fixing force of the second end plate against the rotating shaft is smaller than that of the first end plate. At least a part of the resin portion is present in an axial area between the magnet accommodated in the magnet accommodating hole and the first end plate, and the magnet is in direct contact with the second end plate.Type: GrantFiled: June 4, 2013Date of Patent: September 1, 2015Assignee: DENSO CORPORATIONInventors: Hiroyuki Ikuta, Atsuo Ishizuka, Junichi Nakazono
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Patent number: 8987954Abstract: A motor mounted on a vehicle includes a housing; a shaft rotatably supported by the housing via a bearing; a rotor fixed to the shaft; a stator; and a detector that detects a rotational speed of the rotor. The stator includes: a stator core disposed at an outer circumferential side of the rotor to face the rotor in the radial direction along which the rotor and the stator are arranged to be adjacent each other; and a stator coil being wound around the stator core, the stator coil having a stator coil end formed at one end side of the stator coil in the axial direction. The detector is disposed between the stator coil end and the bearing that supports both ends of the shaft, and at least a part of detector is disposed to be overlapped in the radial direction with the stator coil end and the bearing.Type: GrantFiled: November 9, 2012Date of Patent: March 24, 2015Assignee: Denso CorporationInventor: Hiroyuki Ikuta
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Patent number: 8981613Abstract: The electric rotating machine includes a stator winding constituted of conductor segments each having a pair of in-slot portions and a coil end section projecting from both axial ends of a stator core. The coil end section includes a joint-side end portion having a skew portion intersecting with another one of the conductor segments at an axial end of the stator core. The skew portion is formed with a joint end portion at an extremity thereof, the joint end portion being formed with a conductor exposed portion where an inner conductor is exposed and joined to a conductor exposed portion of another conductor segment. A joint area between the joint end portions and a vicinity thereof are covered by an insulating resin member. The insulating resin member is thicker at a portion covering the conductor exposed portions than at a portion covering other than the conductor exposed portions.Type: GrantFiled: August 17, 2012Date of Patent: March 17, 2015Assignee: Denso CorporationInventors: Hiroyuki Ikuta, Masato Yamaji
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Publication number: 20150034269Abstract: A pulling-up-type continuous casting apparatus that lets molten metal solidify while pulling up a drawing section for drawing the molten metal from a molten-metal surface of the molten metal held in a holding furnace, and thereby shapes the molten metal, includes means for applying a non-contact force to held molten metal, the held molten metal being molten metal that has been drawn from the molten-metal surface by the drawing section but has not solidified yet.Type: ApplicationFiled: July 3, 2014Publication date: February 5, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Fumiki TANAHASHI, Hiroyuki IKUTA, Naoaki SUGIURA
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Publication number: 20150022052Abstract: A stator includes a hollow cylindrical stator core, a stator coil and an outer cylinder. The stator core is comprised of a plurality of core segments that are arranged in a circumferential direction of the stator core to adjoin one another in the circumferential direction. The stator coil is mounted on the stator core. The outer cylinder is fitted on a radially outer periphery of the stator core. The outer cylinder has, at least, a protruding portion and a non-protruding portion. The protruding portion protrudes radially inward to include an abutting part that abuts the radially outer periphery of the stator core. The non-protruding portion extends, without protruding radially inward, to define a radial clearance between the radially outer periphery of the stator core and a radially inner surface of the non-protruding portion. The protruding and non-protruding portions are continuously formed in an axial direction of the outer cylinder.Type: ApplicationFiled: July 18, 2014Publication date: January 22, 2015Inventors: Kazuhiro NOBATA, Toshiaki OOHARA, Youzou MATSUI, Yoshiyasu KOZAKI, Hiroyuki IKUTA, Katsunori KUKI, Akio MORI, Takashi HOSHIYAMA, Yoshihito TAKAHASHI
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Publication number: 20140354108Abstract: A stator includes a hollow cylindrical stator core comprised of a plurality of stator core segments and an outer cylinder fitted on the radially outer surface of the stator core. The stator core has a recess formed in the radially outer surface and the recess has an engaging wall surface that extends in both the axial and radial directions of the stator core. The outer cylinder has a fastening portion for fastening the outer cylinder to the stator core. The fastening portion is formed to be partially surrounded by a plurality of first slits and a second slit. The fastening portion is bent radially inward to have a second slit-side end part thereof received in the recess of the stator core. Further, the second slit-side end part of the fastening portion has a distal end engaging with the engaging wall surface of the recess of the stator core.Type: ApplicationFiled: June 2, 2014Publication date: December 4, 2014Applicant: DENSO CORPORATIONInventors: Kazuhiro NOBATA, Toshiaki OOHARA, Youzou MATSUI, Yoshiyasu KOZAKI, Hiroyuki IKUTA
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Patent number: 8896189Abstract: A stator for an electric rotating machine includes a hollow cylindrical stator core, a stator coil, an outer cylinder, and at least one restraint. The stator core is comprised of a plurality of stator core segments that are arranged in the circumferential direction of the stator core to adjoin one another in the circumferential direction. The stator coil is mounted on the stator core. The outer cylinder is fitted on the radially outer surfaces of the stator core segments so as to fasten the stator core segments together. The restraint is arranged on an axial side of the stator core and retained by the outer cylinder so as to restrain axial deformation of the stator core segments due to the fastening force of the outer cylinder.Type: GrantFiled: December 28, 2011Date of Patent: November 25, 2014Assignee: Denso CorporationInventors: Hiroyuki Ikuta, Atsuo Ishizuka