Patents by Inventor Takehiko Hasegawa

Takehiko Hasegawa 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: 9424966
    Abstract: A method for forming an electrical connection structure part according to the present invention includes a step of covering, with an alloy body, a connection part between a first conductor part and a second conductor part, so as to form the electrical connection structure part. The first conductor part contains aluminum. The second conductor part has a surface covered with an ingredient containing nickel. The alloy body contains tin, silver, and nickel. The method further includes steps of: connecting the first conductor part and the second conductor part to each other to form the connection part; melting the alloy body; and dipping at least the connection part into the molten alloy body.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: August 23, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kenji Kondo, Takehiko Hasegawa, Yugo Ryu, Akihiko Watanabe, Seiji Kurozumi
  • Publication number: 20160086696
    Abstract: A method for forming an electrical connection structure part according to the present invention includes a step of covering, with an alloy body, a connection part between a first conductor part and a second conductor part, so as to form the electrical connection structure part. The first conductor part contains aluminum. The second conductor part has a surface covered with an ingredient containing nickel. The alloy body contains tin, silver, and nickel. The method further includes steps of; connecting the first conductor part and the second conductor part to each other to form the connection part; melting the alloy body; and dipping at least the connection part into the molten alloy body.
    Type: Application
    Filed: December 2, 2015
    Publication date: March 24, 2016
    Inventors: Kenji KONDO, Takehiko HASEGAWA, Yugo Ryu, Akihiko WATANABE, Seiji KUROZUMI
  • Publication number: 20150187462
    Abstract: A method for forming an electrical connection structure part according to the present invention includes a step of covering, with an alloy body, a connection part between a first conductor part and a second conductor part, so as to form the electrical connection structure part. The first conductor part contains aluminum. The second conductor part has a surface covered with an ingredient containing nickel. The alloy body contains tin, silver, and nickel. The method further includes steps of: connecting the first conductor part and the second conductor part to each other to form the connection part; melting the alloy body; and dipping at least the connection part into the molten alloy body.
    Type: Application
    Filed: May 31, 2013
    Publication date: July 2, 2015
    Inventors: Kenji Kondo, Takehiko Hasegawa, Yugo Ryu, Akihiko Watanabe, Seiji Kurozumi
  • Patent number: 8987955
    Abstract: A stator, a rotor, bearings, and conductive brackets are provided. The stator has a stator iron core having a winding wound thereon. The rotor has a rotating body that holds a permanent magnet in the circumferential direction so that the permanent magnet faces the stator, and a shaft that has the rotating body fastened thereto so as to penetrate through the center of the rotating body. Both of the bearing on the output shaft side and the bearing opposite the output shaft side journal the shaft. One of the brackets fixes the bearing on the output shaft side, and the other of the brackets fixes the bracket opposite the output shaft side. The brackets are electrically connected to each other, and a dielectric layer is formed between the shaft and the outer periphery of the rotating body.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: March 24, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hirofumi Mizukami, Akihiko Watanabe, Takehiko Hasegawa, Haruhiko Kado
  • Patent number: 8975796
    Abstract: A motor includes a stator integrally molded together with a stator member, which includes a stator iron-core wound with a winding, by insulating resin, a rotor mounted on a shaft as a center and confronting the stator, two bearings supporting the shaft rotatably, brackets fixing the bearings, and a drive circuit board including a drive circuit which supplies an electric current to the winding and drives the rotor. Either one of the two bearings includes an outer ring and an inner ring both of which are electrically insulated from each other.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 10, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Haruhiko Kado, Hirofumi Mizukami, Akihiko Watanabe, Takehiko Hasegawa
  • Patent number: 8957553
    Abstract: A brushless motor includes a stator molded integrally with a resin having a fixing member including a stator iron core and a winding wound thereon, a rotor of a disk-like iron core holding a ferrite resin magnet in a circumferential direction, the rotor arranged to face the stator about a shaft, a bearing rotatably supporting the shaft, and conductive brackets fixing the bearing. The brackets are electrically connected to each other with a conducting pin in the stator.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: February 17, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takehiko Hasegawa, Hirofumi Mizukami, Akihiko Watanabe, Haruhiko Kado
  • Patent number: 8901788
    Abstract: Provided is an electric motor driven by an inverter of PWM method, and devised to retard electrolytic corrosion in a bearing. A rotating body of a rotor comprises an outer iron core configuring an outer peripheral portion of the rotating body, an inner iron core configuring an inner peripheral portion connected to a shaft, a dielectric layer disposed between the outer iron core and the inner iron core, a plurality of insertion holes penetrating the outer iron core in the axial direction, and permanent magnets inserted individually in the plurality of insertion holes. It thus becomes possible to increase impedance of the rotor side (inner ring side of bearing) to approximate it to impedance of the stator side (outer ring side of the bearing) to thereby bring high frequency potentials balanced between the inner ring side and the outer ring side of the bearing, so as to provide the electric motor that retards electrolytic corrosion liable to occur in the bearing, and an electric device equipped with the same.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: December 2, 2014
    Assignee: Panasonic Corporation
    Inventors: Akihiko Watanabe, Takehiko Hasegawa, Hirofumi Mizukami, Haruhiko Kado, Genki Kondo
  • Patent number: 8587167
    Abstract: A motor includes: a stator molded integrally with an insulating resin having a fixing member including a stator iron core and a winding wound thereon; a rotor arranged to face the stator about a shaft; a bearing rotatably supporting the shaft; a bracket fixing the bearing; and a drive circuit substrate having a drive circuit mounted thereon for driving the winding. The stator iron core is electrically connected to a ground serving as a reference point of a zero potential on the drive circuit substrate through a conductive member.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: November 19, 2013
    Assignee: Panasonic Corporation
    Inventors: Haruhiko Kado, Akihiko Watanabe, Hirofumi Mizukami, Takehiko Hasegawa
  • Patent number: 8536756
    Abstract: A motor includes a stator having a stator iron-core on which a winding is wound, a rotor having a rotary body holding a permanent magnet opposed to the stator along a circumferential direction and a shaft joined to the rotary body such that it extends through the rotary body at the center, bearings supporting the shaft, two conductive brackets for fixing the bearings, and a printed circuit board on which a drive circuit for driving the winding is mounted. A dielectric layer is provided between an outer wall of the rotary body and the shaft, the two brackets are electrically connected together, and a capacitor is connected between the stator iron-core and the brackets for adjusting impedance.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 17, 2013
    Assignee: Panasonic Corporation
    Inventors: Akihiko Watanabe, Hirofumi Mizukami, Takehiko Hasegawa, Haruhiko Kado
  • Patent number: 8502427
    Abstract: A motor includes: a stator including a stator iron core on which a winding is wound; a rotor including a rotating body that holds a magnet in a circumferential direction to face the stator and a shaft that fastens the rotating body to penetrate a center of the rotating body; a bearing that supports the shaft; and two conductive brackets that fix the bearing. The two brackets are electrically connected to each other, and a capacitor serving as an impedance adjusting member that adjusts impedances between the stator iron core and the electrically connected two brackets is arranged.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: August 6, 2013
    Assignee: Panasonic Corporation
    Inventors: Hirofumi Mizukami, Akihiko Watanabe, Takehiko Hasegawa, Haruhiko Kado
  • Publication number: 20130043748
    Abstract: A stator, a rotor, bearings, and conductive brackets are provided. The stator has a stator iron core having a winding wound thereon. The rotor has a rotating body that holds a permanent magnet in the circumferential direction so that the permanent magnet faces the stator, and a shaft that has the rotating body fastened thereto so as to penetrate through the center of the rotating body. Both of the bearing on the output shaft side and the bearing opposite the output shaft side journal the shaft. One of the brackets fixes the bearing on the output shaft side, and the other of the brackets fixes the bracket opposite the output shaft side. The brackets are electrically connected to each other, and a dielectric layer is formed between the shaft and the outer periphery of the rotating body.
    Type: Application
    Filed: May 12, 2010
    Publication date: February 21, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Hirofumi Mizukami, Akihiko Watanabe, Takehiko Hasegawa, Haruhiko Kado
  • Publication number: 20120112588
    Abstract: Provided is an electric motor driven by an inverter of PWM method, and devised to retard electrolytic corrosion in a bearing. A rotating body of a rotor comprises an outer iron core configuring an outer peripheral portion of the rotating body, an inner iron core configuring an inner peripheral portion connected to a shaft, a dielectric layer disposed between the outer iron core and the inner iron core, a plurality of insertion holes penetrating the outer iron core in the axial direction, and permanent magnets inserted individually in the plurality of insertion holes. It thus becomes possible to increase impedance of the rotor side (inner ring side of bearing) to approximate it to impedance of the stator side (outer ring side of the bearing) to thereby bring high frequency potentials balanced between the inner ring side and the outer ring side of the bearing, so as to provide the electric motor that retards electrolytic corrosion liable to occur in the bearing, and an electric device equipped with the same.
    Type: Application
    Filed: September 7, 2010
    Publication date: May 10, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Akihiko Watanabe, Takehiko Hasegawa, Hirofumi Mizukami, Haruhiko Kado, Genki Kondo
  • Publication number: 20120038229
    Abstract: A motor includes a stator having a stator iron-core on which a winding is wound, a rotor having a rotary body holding a permanent magnet opposed to the stator along a circumferential direction and a shaft joined to the rotary body such that it extends through the rotary body at the center, bearings supporting the shaft, two conductive brackets for fixing the bearings, and a printed circuit board on which a drive circuit for driving the winding is mounted. A dielectric layer is provided between an outer wall of the rotary body and the shaft, the two brackets are electrically connected together, and a capacitor is connected between the stator iron-core and the brackets for adjusting impedance.
    Type: Application
    Filed: February 26, 2010
    Publication date: February 16, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Akihiko Watanabe, Hirofumi Mizukami, Takehiko Hasegawa, Haruhiko Kado
  • Publication number: 20120032536
    Abstract: A motor includes a stator integrally molded together with a stator member, which includes a stator iron-core wound with a winding, by insulating resin, a rotor mounted on a shaft as a center and confronting the stator, two bearings supporting the shaft rotatably, brackets fixing the bearings, and a drive circuit board including a drive circuit which supplies an electric current to the winding and drives the rotor. Either one of the two bearings includes an outer ring and an inner ring both of which are electrically insulated from each other.
    Type: Application
    Filed: March 29, 2010
    Publication date: February 9, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Haruhiko Kado, Hirofumi Mizukami, Akihiko Watanabe, Takehiko Hasegawa
  • Publication number: 20110234025
    Abstract: A motor includes: a stator molded integrally with an insulating resin having a fixing member including a stator iron core and a winding wound thereon; a rotor arranged to face the stator about a shaft; a bearing rotatably supporting the shaft; a bracket fixing the bearing; and a drive circuit substrate having a drive circuit mounted thereon for driving the winding. The stator iron core is electrically connected to a ground serving as a reference point of a zero potential on the drive circuit substrate through a conductive member.
    Type: Application
    Filed: December 11, 2009
    Publication date: September 29, 2011
    Applicant: Panasonic Corporation
    Inventors: Haruhiko Kado, Akihiko Watanabe, Hirofumi Mizukami, Takehiko Hasegawa
  • Publication number: 20110234024
    Abstract: A brushless motor includes a stator molded integrally with a resin having a fixing member including a stator iron core and a winding wound thereon, a rotor of a disk-like iron core holding a ferrite resin magnet in a circumferential direction, the rotor arranged to face the stator about a shaft, a bearing rotatably supporting the shaft, and conductive brackets fixing the bearing. The brackets are electrically connected to each other with a conducting pin in the stator.
    Type: Application
    Filed: December 11, 2009
    Publication date: September 29, 2011
    Inventors: Takehiko Hasegawa, Hirofumi Mizukami, Akihiko Watanabe, Haruhiko Kado
  • Publication number: 20110234026
    Abstract: A motor includes: a stator including a stator iron core on which a winding is wound; a rotor including a rotating body that holds a magnet in a circumferential direction to face the stator and a shaft that fastens the rotating body to penetrate a center of the rotating body; a bearing that supports the shaft; and two conductive brackets that fix the bearing. The two brackets are electrically connected to each other, and a capacitor serving as an impedance adjusting member that adjusts impedances between the stator iron core and the electrically connected two brackets is arranged.
    Type: Application
    Filed: December 11, 2009
    Publication date: September 29, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Hirofumi Mizukami, Akihiko Watanabe, Takehiko Hasegawa, Haruhiko Kado
  • Patent number: D753591
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: April 12, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hidetaka Noda, Takehiko Hasegawa, Akira Matsuo