Patents Assigned to Sanyo Denki Co., Ltd.
  • POWER TRANSMISSION DEVICE
    Publication number: 20140217743
    Abstract: A power transmission device includes: a high speed magnet rotor which includes a magnet array which is magnetized in a radial direction; a low speed magnet rotor which includes a magnet array which is magnetized in a circumferential direction; and an inductor rotor which allows magnetic fluxes from the magnet array of the high speed magnet rotor to pass, and the high speed magnet rotor, the low speed magnet rotor and the inductor rotor are concentrically arranged and the magnet array of the low speed magnet rotor is formed such that homopolar surfaces of neighboring magnets face each other in the circumferential direction.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
  • ROTOR FOR PERMANENT MAGNET TYPE MOTOR, METHOD OF MANUFACTURING ROTOR FOR PERMANENT MAGNET TYPE MOTOR, AND PERMANENT MAGNET TYPE MOTOR
    Publication number: 20140210296
    Abstract: A rotor for a permanent magnet type motor has rotor core blocks in a multistage in an axial direction in which permanent magnets of a plurality of magnetic poles are incorporated, and has a stage skew structure in which the rotor core blocks of each stage are integrally formed so as to be shifted from each other in a rotational direction. The rotor core blocks of each stage have a flux barrier portion for blocking a short circuit magnetic flux between the magnetic poles, between the magnetic poles of the permanent magnet. A skew angle is set so that the flux barrier portions of the magnetic poles between the adjacent stages at least partially overlap each other in the rotor core blocks of different stages.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 31, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventor: Toshihito Miyashita
  • ELECTRIC FAN
    Publication number: 20140205476
    Abstract: An electric fan is provided, including a labyrinth structure with increased performance of preventing entry of a liquid into a receiving space to receive a stator and a rotor. A clearance is defined between an opposed wall portion of a base and an opposed wall portion of an impeller body, which are opposed to each other in an axial direction of a rotary shaft, to form a labyrinth structure. The opposed wall portion of the base and the opposed wall portions of the impeller body are shaped to form a volume expanding portion within the clearance. The volume expanding portion is constituted from a groove portion for expanding the clearance, having a volume larger than other portions within the clearance.
    Type: Application
    Filed: March 21, 2014
    Publication date: July 24, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Naruhiko Kudo, Tomoaki Ikeda, Haruhisa Maruyama
  • Linear actuator
    Patent number: 8770052
    Abstract: 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: Grant
    Filed: December 10, 2010
    Date of Patent: July 8, 2014
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Koji Nakatake, Kazuyuki Kitazawa, Shigenori Miyairi
  • Axial flow fan
    Patent number: 8770943
    Abstract: An axial flow fan includes a blade having a curved portion formed in the vicinity of a radially outer end portion positioned opposite to the base portion in the radial direction of the peripheral wall portion of the hub. The curved portion is convex in the rotation direction, concave in the direction opposite to the rotation direction, and extends along the radially outer end portion of the blade. The curved portion extends from a rear end edge of the blade, positioned on a side where one end of the base portion of the blade is positioned, and extends in the radial direction of the hub to the vicinity of a front end edge of the blade, positioned on a side where the other end of the base portion of the blade is positioned and extending in the radial direction.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: July 8, 2014
    Assignee: Sanyo Denki Co., Ltd.
    Inventor: Katsumichi Ishihara
  • Counter-rotating axial flow fan
    Patent number: 8764375
    Abstract: A counter-rotating axial flow fan with improved characteristics and reduced noise compared to the related art can be provided. Defining the number of front blades as N, the number of stationary blades as M, and the number of rear blades as P, and defining the maximum axial chord length of the front blades as Lf, the maximum axial chord length of the rear blades as Lr, the outside diameter of the front blades as Rf, and the outside diameter of the rear blades as Rr, the counter-rotating axial flow fan satisfies the following two relationships: N?P>M; and Lf/(Rf×?/N)?1.25 and/or Lr/(Rr×?/P)?0.83.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: July 1, 2014
    Assignees: The University of Tokyo, Fujitsu Limited, Sanyo Denki Co., Ltd.
    Inventors: Chisachi Kato, Atsushi Yamaguchi, Akira Ueda, Kazuhiro Nitta, Akihiro Otsuka, Tadashi Katsui, Masahiro Suzuki, Yoshihiko Aizawa, Honami Oosawa
  • Centrifugal fan
    Patent number: 8764418
    Abstract: An impeller comprises an impeller body, a plurality of stems, a blade mounting member, and a plurality of blades. The stems radially extend with one end of each stem fixed to a portion of a circumferential wall of the impeller body in the vicinity of a suction port, and are arranged at intervals in a circumferential direction of the circumferential wall. The stems assist the impeller to suck air Jn an axial direction through a suction port during rotation of the impeller. The blade mounting member is disposed concentrically with the circumferential wall of the impeller body. The other end of each stem is fixed to the blade mounting member. The blades are arranged at intervals in the circumferential direction and extend along an axial line toward a second wall portion, with one end of each blade fixed to the blade mounting member.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: July 1, 2014
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Kevin Yen, Hiromitsu Kuribayashi
  • AXIAL FLOW FAN
    Publication number: 20140169969
    Abstract: The present invention provides an axial flow fan having conductive pins, each of which is configured to electrically connect a coil of a stator and a circuit board, and to hold a film conductor of the coil. In the conductive pin, one end is fixed to an electrical insulator covering a core stack of the stator, and the other end is electrically connected to the circuit board. The conductive pin is a quadrangular prism pin as a basic configuration and has, in at least a part of a portion exposed from the electrical insulator, a reduced diameter portion having no corners.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Munenori Takakuwa, MITSUTAKA KUBOTA
  • Centrifugal fan
    Patent number: 8753076
    Abstract: A centrifugal fan is provided, in which the value of static pressure with respect to the flow rate, namely, the flow rate-static pressure characteristic may be set to a relatively arbitrary value without increasing noise. An impeller of the centrifugal fan comprises an impeller body, a plurality of stems, a blade mounting member, a plurality of main blades, and a plurality of sub blades. The main blades are shaped to suck air into a casing through a suction port when the impeller rotates in a direction of normal rotation. The sub blades are shaped to suck air into the casing through the suction port when the impeller rotates in a direction of reverse rotation opposite to the direction of normal direction.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: June 17, 2014
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Kevin Yen, Hiromitsu Kuribayashi
  • POWER LINE CONNECTING STRUCTURE OF STATOR
    Publication number: 20140154933
    Abstract: A simple structure which improves reliability of connection and secures creeping and spatial distances for electrical insulation without increasing manufacturing cost is provided. Feed-through terminals whose diameters can be reduced are bonded to lands of a wiring substrate, and insertion terminals are bonded to core wires of lead wires. The insertion terminals of the lead wires are arranged in the feed-through terminals bonded to the lands. In a state where the feed-through terminals are swaged and the insertion terminals of the lead wires are pressure-bonded, the insertion terminals of the lead wires are bonded to the feed-through terminals.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Yukio Miura, Kazuyoshi Uchiyama, Kazuhiro Yoda
  • WIRING STRUCTURE OF STATOR COIL
    Publication number: 20140152131
    Abstract: Electrical insulation properties of winding start ends or terminal ends of insulating coating electric wires of coils wound around polar teeth of a stator core are improved, and creeping and spatial distances for electrical insulation are secured. Wall portions which project toward an interior of a radial direction or an exterior of an axial direction of a stator core and which have electrical insulation properties are formed in an inner peripheral portion of the stator core of a motor, groove portions are formed in the wall portions and winding start ends or terminal ends of insulating coating electric wires of coils are arranged in the groove portions.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Yukio Miura, Masaaki Oohashi, Kouji Nakatake
  • SPLIT-CORE TYPE MOTOR AND METHOD OF MANUFACTURING ARMATURE OF SPLIT-CORE TYPE MOTOR
    Publication number: 20140132096
    Abstract: A split-core type motor makes work for connecting lead wires of split coils simple and efficient and reduces manufacturing costs and time taken to connect wires is realized. The split-core type motor includes a plurality of split coils formed by winding coils on split cores on which insulating members have been mounted; a stator formed by disposing the plurality of split coils in an annular shape; crimp terminals that connect lead wires of the split coils by being crimped so that the lead wires of the split coils correspond to a u phase, a v phase, and a w phase of a three-phase AC power source, and form terminals corresponding to the u phase, the v phase, and the w phase, respectively; and a resin mold part that covers the coils and the lead wires while power line connecting portions of the crimp terminals are exposed to the outside.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 15, 2014
    Applicant: Sanyo Denki Co., Ltd.
    Inventors: Tooru Takeda, Shintarou Koichi, Kenta Matsuhashi
  • AXIAL-FLOW FAN
    Publication number: 20140105763
    Abstract: An axial-flow fan according to the present disclosure can increase the amount of the airflow and simultaneously reduce the noise level. A plurality of stationary blades 11A to 11D are curved, in a convex manner, toward a rotating direction of an impeller. The plurality of stationary blades 11A to 11D are generally inclined so that discharge-side edge portions 11d thereof are located more forward than suction-side edge portions 11c thereof in the rotating direction. An inclination angle ?4 of each of the plurality of stationary blades 11A to 11D in the vicinity of the external end portion 11a is larger than the inclination angle ?3 in the vicinity of the internal end portion 11b. The inclination angle is gradually changed from the vicinity of the external end portion 11a toward the vicinity of the internal end portion 11b.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 17, 2014
    Applicant: Sanyo Denki Co., Ltd.
    Inventors: Katsumichi Ishihara, Honami Oosawa, Masashi Miyazawa, Tomoaki Ikeda
  • BRUSHLESS MOTOR INSULATOR, BRUSHLESS MOTOR STATOR, BRUSHLESS MOTOR, AND METHOD OF MANUFACTURING BRUSHLESS MOTOR
    Publication number: 20140103759
    Abstract: Provided is a brushless motor insulator capable of improving workability relating to the winding of electric wires by a simple configuration. An insulator 10 includes a main body portion 11 and a mooring portion 12. The main body portion 11 includes plural wiring portions 11b radially provided so that electric wires 30 are held while being wound on the wiring portions 11b. The mooring portion 12 is disposed in the inner periphery or the outer periphery of the main body portion 11 and moors ends of winding start portions or winding end portions of the electric wires 30 of the wiring portions 11b.
    Type: Application
    Filed: October 14, 2013
    Publication date: April 17, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventor: Yoshinori Miyabara
  • Linear actuator
    Patent number: 8692428
    Abstract: 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: Grant
    Filed: December 10, 2010
    Date of Patent: April 8, 2014
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Shigenori Miyairi, Koji Nakatake
  • Counter-rotating axial flow fan
    Patent number: 8690528
    Abstract: A counter-rotating axial flow fan in which the shape of stationary blades of a middle stationary portion is optimized to reduce noise is provided. Defining the maximum axial chord length of front blades as Lf, the maximum axial chord length of rear blades as Lr, and the maximum axial chord length of stationary blades as Lm, a relationship of Lm/(Lf+Lr)<0.14 is satisfied. Defining the maximum dimension between the blade chord for lower surfaces of the stationary blades and the lower surfaces as K1, the maximum axial chord length Lm of the stationary blades satisfies a relationship of Lm/K1>5.8.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 8, 2014
    Assignees: The University of Tokyo, Sanyo Denki Co., Ltd., Fujitsu Limited
    Inventors: Chisachi Kato, Atsushi Yamaguchi, Akira Ueda, Kazuhiro Nitta, Akihiro Otsuka, Sr., Tadashi Katsui, Masahiro Suzuki, Yoshihiko Aizawa, Honami Oosawa
  • THREE-PHASE PERMANENT MAGNET TYPE MOTOR
    Publication number: 20140091656
    Abstract: A three-phase permanent magnet type motor has a stator in which a plurality of windings wound in a same direction are disposed, and the number of slots is 12n; a rotor in which the number of poles of the permanent magnet is 10n or 14n; and multilayer wiring boards for performing the connection so as to be 2m parallel. The three-phase permanent magnet type motor has a circuit configuration in which, among U-phase, V-phase, and W-phase, adjacent in-phase windings are connected in parallel and are connected in series with a like-pole winding of a symmetrical in-phase second winding group facing at 6-slot pitch angle, when a center of a first winding group of the adjacent in-phase windings is set as a reference axis, and in-phase transition wiring patterns are disposed on the same layer of the multilayer wiring boards in a line symmetrical manner.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 3, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Toshihito Miyashita, Masahiro Yamaguchi
  • PERMANENT MAGNET-EMBEDDED MOTOR AND ROTOR THEREOF
    Publication number: 20140084735
    Abstract: In a rotor of a permanent magnet-embedded motor, a plurality of permanent magnets is arranged in one magnet housing of a rotor core. A rib portion which connects an outer peripheral portion of the rotor core with an inner peripheral portion of the rotor core is arranged per plurality of magnetic poles.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 27, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventor: Toshihito Miyashita
  • Driving system for fan and method of driving fan
    Patent number: 8680800
    Abstract: A driving system for a fan that enables an increase in motor current that may be supplied to excitation windings at the time of a maximum static pressure without increasing the rotational speed excessively when an amount of maximum air flow is provided. The fan driving system includes a drive signal generating circuit that generates drive signals, a motor driving circuit that supplies a motor current to the motor in accordance with the drive signals, a current detecting circuit (resistance) that detects the motor current, and a drive signal changing circuit. The drive signal changing circuit changes the drive signals generated by the drive signal generating circuit to restrict an increase in the motor current when the motor current becomes larger than a threshold.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: March 25, 2014
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Shigekazu Mitomo, Kevin Yen
  • MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD
    Publication number: 20140062360
    Abstract: A motor control device includes an energization pattern output portion and an inverter circuit. The energization pattern output portion cyclically outputs a plurality of energization patterns. The inverter circuit selectively connects respective coils provided in a motor to a rectifier circuit according to the output energization pattern. The energization pattern output portion delays the output timing of the energization pattern according to a rotation speed of the motor.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Yo Muramatsu, Takahisa Toda