Patents by Inventor Shigenori Miyairi
Shigenori Miyairi 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: 8008831Abstract: A stator for a rotary electric machine with wedge members insertable into slots without being bent or folded is provided. A coupling portion is integrally formed at a non-inserted end portion, which is not inserted into a slot, of a wedge member, the coupling portion extending across an end of a partition wall portion and an end of a block portion. The wedge member and the coupling portion are formed of a synthetic resin material. Two or more coupling portions of two or more adjacently disposed wedge members are integrally formed as a continuous coupling portion.Type: GrantFiled: March 8, 2011Date of Patent: August 30, 2011Assignee: Sanyo Denki Co., Ltd.Inventors: Ikuo Takeshita, Shigenori Miyairi
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Publication number: 20110156525Abstract: A stator for a rotary electric machine with wedge members insertable into slots without being bent or folded is provided. A coupling portion is integrally formed at a non-inserted end portion, which is not inserted into a slot, of a wedge member, the coupling portion extending across an end of a partition wall portion and an end of a block portion. The wedge member and the coupling portion are formed of a synthetic resin material. Two or more coupling portions of two or more adjacently disposed wedge members are integrally formed as a continuous coupling portion.Type: ApplicationFiled: March 8, 2011Publication date: June 30, 2011Applicant: SANYO DENKI CO., LTD.Inventors: Ikuo Takeshita, Shigenori Miyairi
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Publication number: 20110138947Abstract: A linear actuator that does not require a high assembly precision is provided. A linear actuator includes a motor portion including a rotary shaft, a rotor, and a stator, a first bearing portion that supports a first end of the rotary shaft, a locknut threadably engaged on the first end of the rotary shaft, and a ball screw mechanism including a ball screw nut screwed to the locknut and a ball screw threadably engaged with the ball screw nut. Gaps formed between an outer peripheral portion of the rotary shaft and an inner peripheral portion of the locknut, except a male thread portion formed on the rotary shaft and a female thread portion formed on the locknut threadably engaged with each other, are defined to have respective predetermined sizes.Type: ApplicationFiled: December 10, 2010Publication date: June 16, 2011Applicant: SANYO DENKI CO., LTD.Inventors: Koji Nakatake, Kazuyuki Kitazawa, Shigenori Miyairi
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Publication number: 20110140557Abstract: A linear actuator having an output shaft with a long moving distance is provided. A linear actuator includes a rotary shaft, a motor portion having a rotor and a stator, a ball screw mechanism including a ball screw nut fixed to a first end of the rotary shaft and a ball screw, a casing assembly including a first end bracket and a second end bracket, an electromagnetic brake device including a rotary brake disc, a stationary brake disc, and an electromagnetic coil, and a brake cover for covering the electromagnetic brake device. The electromagnetic brake device has a hollow structure allowing a second end of the rotary shaft to pass therethrough.Type: ApplicationFiled: December 10, 2010Publication date: June 16, 2011Applicant: SANYO DENKI CO., LTD.Inventors: Shigenori Miyairi, Koji Nakatake
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Patent number: 7919896Abstract: A stator for a rotary electric machine with wedge members insertable into slots without being bent or folded is provided. A coupling portion is integrally formed at a non-inserted end portion, which is not inserted into a slot, of a wedge member, the coupling portion extending across an end of a partition wall portion and an end of a block portion. The wedge member and the coupling portion are formed of a synthetic resin material. Two or more coupling portions of two or more adjacently disposed wedge members are integrally formed as a continuous coupling portion.Type: GrantFiled: May 21, 2009Date of Patent: April 5, 2011Assignee: Sanyo Denki Co., Ltd.Inventors: Ikuo Takeshita, Shigenori Miyairi
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Patent number: 7868497Abstract: An airtight-type electric motor capable of reducing vibration is provided. Inside ribs of a pair of end brackets and are respectively fitted into core end portions of a stator core. Outside ribs of the pair of end brackets and are respectively brought into contact against end surfaces of the core end portions of a yoke of the stator core. With this arrangement, the pair of end brackets and are fixed to the stator core, and a housing and the stator core are arranged, without being coupled together.Type: GrantFiled: February 24, 2009Date of Patent: January 11, 2011Assignee: Sanyo Denki Co., Ltd.Inventors: Shigenori Miyairi, Ikuo Takeshita, Koji Nakatake, Hisayuki Miyajima
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Publication number: 20090289520Abstract: A stator for a rotary electric machine with wedge members insertable into slots without being bent or folded is provided. A coupling portion is integrally formed at a non-inserted end portion, which is not inserted into a slot, of a wedge member, the coupling portion extending across an end of a partition wall portion and an end of a block portion. The wedge member and the coupling portion are formed of a synthetic resin material. Two or more coupling portions of two or more adjacently disposed wedge members are integrally formed as a continuous coupling portion.Type: ApplicationFiled: May 21, 2009Publication date: November 26, 2009Applicant: SANYO DENKI CO., LTD.Inventors: Ikuo Takeshita, Shigenori Miyairi
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Publication number: 20090212655Abstract: An airtight-type electric motor capable of reducing vibration is provided. Inside ribs of a pair of end brackets and are respectively fitted into core end portions of a stator core. Outside ribs of the pair of end brackets and are respectively brought into contact against end surfaces of the core end portions of a yoke of the stator core. With this arrangement, the pair of end brackets and are fixed to the stator core, and a housing and the stator core are arranged, without being coupled together.Type: ApplicationFiled: February 24, 2009Publication date: August 27, 2009Applicant: SANYO DENKI CO., LTD.Inventors: Shigenori Miyairi, Ikuo Takeshita, Koji Nakatake, Hisayuki Miyajima
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Patent number: 7329973Abstract: The present invention provides a rotary electric machine, of which the occupied volume can be reduced and which allows a space in an electric apparatus equipped therewith to be utilized effectively. A slot insulator 15 is integrally formed with a holder mounting portion 25, a whole or major part of which is positioned on one of end faces of a yoke 11 of a stator core 7. A lead wire holder 27 includes a connection holding portion 27a for disposing a plurality of connections 30, in which lead-out wires of windings are connected with corresponding core wires 29a of lead wires 29, at a predetermined interval so that the connections do not contact with each other. The lead wire holder 27 is arranged so that the connection holding portion 27a is positioned over a part of the windings 9 and the holder mounting portion 25 when the lead wire holder is attached to the holder mounting portion 25.Type: GrantFiled: August 15, 2006Date of Patent: February 12, 2008Assignee: Sanyo Denki Co., Ltd.Inventors: Masaaki Oohashi, Shigenori Miyairi, Ikuo Takeshita
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Publication number: 20070040461Abstract: The present invention provides a rotary electric machine, of which the occupied volume can be reduced and which allows a space in an electric apparatus equipped therewith to be utilized effectively. A slot insulator 15 is integrally formed with a holder mounting portion 25, a whole or major part of which is positioned on one of end faces of a yoke 11 of a stator core 7. A lead wire holder 27 includes a connection holding portion 27a for disposing a plurality of connections 30, in which lead-out wires of windings are connected with corresponding core wires 29a of lead wires 29, at a predetermined interval so that the connections do not contact with each other. The lead wire holder 27 is arranged so that the connection holding portion 27a is positioned over a part of the windings 9 and the holder mounting portion 25 when the lead wire holder is attached to the holder mounting portion 25.Type: ApplicationFiled: August 15, 2006Publication date: February 22, 2007Applicant: SANYO DENKI CO., LTD.Inventors: Masaaki Oohashi, Shigenori Miyairi, Ikuo Takeshita
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Patent number: 7102319Abstract: A rotation control method of a synchronous motor, the motor comprising: a stator having AC windings thereround; and a rotor, being mounted within said stator, rotatably, wherein on an each surface, opposing to the rotor, of poles building up the stator, are formed plural numbers of teeth portions, and on a surface of the rotor, being made of permanent magnet, opposing to the poles of the stator, are also formed plural numbers of teeth portions, with a width being nearly equal to that of the teeth portion in a circumference direction thereof, and further AC voltages having a predetermined voltage-frequency characteristic is supplied to AC windings wound around the poles of the stator, and the AC voltages supplied from the inverter is so determined in the voltage-frequency characteristic thereof, at least within a part of frequency band equal or less than a predetermined rated frequency, a pull-out torque of the synchronous motor is equal to or greater that a rated pull-out torque at the predetermined rated freType: GrantFiled: September 30, 2004Date of Patent: September 5, 2006Assignees: Hitachi Industrial Equipment Systems Co., Ltd., Sanyo Denki Co., Ltd.Inventors: Hisayuki Miyajima, Shigenori Miyairi, Mutsuo Tokashiki, Hiroshi Watanabe
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Publication number: 20050104550Abstract: A rotation control method of a synchronous motor, the motor comprising: a stator having AC windings thereround; and a rotor, being mounted within said stator, rotatably, wherein on an each surface, opposing to the rotor, of poles building up the stator, are formed plural numbers of teeth portions, and on a surface of the rotor, being made of permanent magnet, opposing to the poles of the stator, are also formed plural numbers of teeth portions, with a width being nearly equal to that of the teeth portion in a circumference direction thereof, and further AC voltages having a predetermined voltage-frequency characteristic is supplied to AC windings wound around the poles of the stator, and the AC voltages supplied from the inverter is so determined in the voltage-frequency characteristic thereof, at least within a part of frequency band equal or less than a predetermined rated frequency, a pull-out torque of the synchronous motor is equal to or greater that a rated pull-out torque at the predetermined rated freType: ApplicationFiled: September 30, 2004Publication date: May 19, 2005Inventors: Hisayuki Miyajima, Shigenori Miyairi, Mutsuo Tokashiki, Hiroshi Watanabe