Patents by Inventor Shin Kusase

Shin Kusase 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).

  • Publication number: 20090134732
    Abstract: A synchronous machine comprises a stator and a rotor that faces the stator and rotates on a shaft thereof in a circumferential direction The rotor has magnetic salient poles that generate reluctance torque and magnet-originating magnetic poles that generate magnet torque by using permanent magnets embedded in the rotor, The machine comprises means for shifting a magnetically substantial central position of magnetic flux emanating from the permanent magnets in the circumferential direction, by an electrical angle ?/2 plus a predetermined angle ??, from a reference position taken as a central position between paired magnetic salient poles composing each magnetic pole of the machine among the magnetic salient poles. Hence a maximum amplitude of a sum between a harmonic component of the magnet torque and the reluctance torque is changed from that obtained at the reference position without the shift.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 28, 2009
    Applicant: DENSO CORPORATION
    Inventors: Akiya Shichijoh, Shin Kusase, Yuya Mizuma, Satoshi Ito
  • Patent number: 7462968
    Abstract: The rotor of the outer-rotor type wheel-in motor of the electric wheel includes a field generator facing the outer surface of the stator across from an electrical gap. The field generator includes pole magnets magnetized in the radial direction with respect to the rotation axis of the wheel-in motor, adjacent two of the pole magnets having opposite directions of magnetization so that magnet polarity of the field generator alternates at a predetermined pole pitch along the circumferential direction, yoke magnets magnetized in the circumferential direction each of which is put between corresponding adjacent two of the pole magnets to strengthen magnetic field formed by the pole magnets, and a field generator support member to which the field generator is fixed, the field generator support member being fixed to the rotary shaft which is rotatably supported by a wheel suspension system of a vehicle.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: December 9, 2008
    Assignee: Denso Corporation
    Inventors: Shin Kusase, Takuzou Mukai
  • Patent number: 7429802
    Abstract: The vehicle-use generator includes a first rotor core having a first field coil wound therearound, a second rotor core having a second field coil wound therearound, a rotating shaft belt-driven by a vehicle engine, the first and second rotor cores being mounted in tandem on the rotating shaft, a stator core having a stator coil wound therearound, and disposed radially outwardly of the first and second rotor cores so as to form a circumferential gap with the first and second rotor cores. The first and second field coils are connected substantially in parallel to each other when viewed from an external field current supply source supplying field currents to the first and second field coils.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: September 30, 2008
    Assignee: Denso Corporation
    Inventors: Takuzou Mukai, Shin Kusase
  • Patent number: 7420313
    Abstract: A tandem type rotary generator has a rotary shaft, and two power generating sections disposed adjacent to each other along an axial direction. Each power generating section has a Lundell type rotor core fixed to the rotary shaft, a field coil wound on the rotor core, a stator core disposed on an outside of the rotor core opposite to the rotary shaft in a radial direction, and a stator coil wound on the stator core. A center of the field coil of each power generating section is positioned away from a center of the stator core of the power generating section in the axial direction toward the other power generating section. Two cooling fans cooling the power generating sections are disposed on both sides of the pair of rotor cores in the axial direction.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: September 2, 2008
    Assignee: Denso Corporation
    Inventors: Kazushige Okumoto, Shin Kusase
  • Patent number: 7417355
    Abstract: A vehicular tandem type rotary electric machine is disclosed having first and second stator cores 23, 33 having first and second circumferentially spaced slots to accommodate therein first and second stator coils 24, 34, respectively, and first and second Lundell type rotor cores 21, 31 supported on a common rotary shaft 4 in an axially adjacent relationship to be rotatable within the first and second stator cores, respectively, on which first and second field coils 22, 32 are wounded, respectively. Both of the first and second stator coils 24, 34 comprise segments-sequentially-joined stator coils, respectively, each of which includes segment conductors.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: August 26, 2008
    Assignee: Denso Corporation
    Inventors: Akiya Shichijo, Shin Kusase
  • Patent number: 7397156
    Abstract: A tandem rotary electric machine for vehicles is equipped with a primary rotary electric machine and a secondary rotary electric machine arranged in tandem mechanism, namely, of a dual stator-rotor pair mechanism. In the tandem rotary electric machine, a connection lead wire connects a stator coil wound on a stator core of the primary stator-rotor pair to a rectifier device through one of accommodation parts formed in slots of the stator core of the secondary stator-rotor pair. This structure reduces the entire size or volume of the tandem rotary electric machine and increases the mechanical safety against the impact or force from outside.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: July 8, 2008
    Assignee: Denso Corporation
    Inventors: Takuzou Mukai, Shin Kusase
  • Patent number: 7397157
    Abstract: A tandem rotary electric machine, to be applicable to various types of mobile bodies such as vehicles, is equipped with a primary rotary electric machine and a secondary rotary electric machine arranged in tandem mechanism. In the tandem rotary electric machine, heat energy generated by positive diodes and negative diodes forming one or more rectifier devices is dissipated to a stator core of the secondary rotary electric machine. The stator core of the secondary rotary electric machine acts as a heat sink through the housing. The stator core of the secondary rotary electric machine has a less frequency use, and a large size and a large weight than those of the primary rotary electric machine of high frequent and normal is used as a heat sink in order to prevent the temperature rise of the positive diode and the negative diode of the rectifier devices.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: July 8, 2008
    Assignee: Denso Corporation
    Inventors: Takeo Maekawa, Shin Kusase
  • Publication number: 20080143114
    Abstract: In a reluctance rotary electric machine, a movable part is arranged opposing part of an alignment of a plurality of stator poles to be movable in a predetermined direction. In the movable part, at least one pair of salient poles is configured to magnetically couple to the excited at least one first pair of the plurality of poles so as to form a first magnetic flux in loop thereamong. A segment magnetic-path portion is arranged to be magnetically separated from the at least one pair of salient poles. The segment magnetic-path portion works to magnetically couple therethrough between the at least one second pair of the plurality of stator poles so as to form a second magnetic flux in loop thereamong. The first magnetic flux and second magnetic flux create a reluctance force to move the movable part in the predetermined direction.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 19, 2008
    Applicant: DENSO CORPORATION
    Inventors: Shin Kusase, Yuya Mizuma
  • Publication number: 20080079328
    Abstract: A stator coil includes a belt-shaped winding band and a same-layer bridging portion. The winding band makes one or more rounds, while turning back in the axial direction a plurality of conductor wires which are aligned in parallel at a pitch of electric angle ? (pi). The same-layer bridging portion connects a pair of the conductor wires which are of the same phase at the end portion of the winding and which are arranged in the same layer of the slot. Such arrangement enables forming a compact multi-phase stator coil.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 3, 2008
    Applicant: DENSO CORPORATION
    Inventors: Akiya Shichijoh, Shin Kusase, Takeshi Araki
  • Publication number: 20070284963
    Abstract: A rotor for a tandem type alternator and a tandem type alternator having such a rotor are disclosed. The rotor comprises front and rear Lundell-type rotor cores, carried on a rotary shaft adjacent to each other, which include front and rear rotor coils, respectively, and front and rear claw-shaped pole portions surrounding the front and rear rotor coils, respectively. The rear Lundell-type rotor core has a rear end face including a convexed portion, formed around the rotary shaft, in which a large diameter stepped portion of the rotary shaft and a plurality of relay terminals associated therewith are accommodated in an area close proximity to the rear Lundell-type rotor core, enabling an axial length of the rotary shaft between front and rear bearings to be shortened to increase the number of allowable maximum revolutions of the rotor by that extent.
    Type: Application
    Filed: April 6, 2007
    Publication date: December 13, 2007
    Applicant: DENSO CORPORATION
    Inventors: Takuzou Mukai, Shin Kusase
  • Publication number: 20070278895
    Abstract: In a Lundell type rotor core of a rotor in a vehicular AC generator, each interposing magnet is supported at a base part of each claw-shaped magnetic pole part in an axial direction of the rotor. This configuration prevents the transmission of deformation at a front end part of each claw-shaped magnetic pole part to the interposing magnet during rotation of the rotor at high rotation speed.
    Type: Application
    Filed: May 21, 2007
    Publication date: December 6, 2007
    Applicant: DENSO CORPORATION
    Inventor: Shin Kusase
  • Publication number: 20070273242
    Abstract: In a tandem AC generator for a vehicle having dual armature core-Lundel type field core pairs placed in series, an intermediate ring as a cylindrical spacer is placed between the dual armature cores. One armature core, the intermediate ring, and the other armature core are pressed and tightly fastened to each other in the direction of a rotary shaft by front and rear housings by a through bolt. A circumference wall part of the front housing accommodates one armature core and the intermediate ring completely and further accommodates a part of an outer circumference surface of the other armature core. This simple construction of the tandem AC generator provides improved and superior vibration proof.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 29, 2007
    Applicant: DENSO CORPORATION
    Inventors: Kazushige Okumoto, Shin Kusase
  • Publication number: 20070273243
    Abstract: According to the present invention, an alternator includes a rotor, a stator, and at least one cooling fan. The rotor includes a rotary shaft, a field core, and a field coil. The field coil has first and second ends that are opposite to each other in an axial direction of the rotary shaft. The stator includes an armature core and an armature coil. The armature core has first and second ends that are opposite to each other in the axial direction. The first end of the armature core is closer to the first end than the second end of the field coil. An axial distance between the first and second ends of the field coil is less than that between the first and second ends of the armature core. The first end of the field coil protrudes outward from the first end of the armature core in the axial direction.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 29, 2007
    Applicant: DENSO CORPORATION
    Inventors: Kazushige Okumoto, Shin Kusase
  • Publication number: 20070273237
    Abstract: An alternator has a rotor and a stator. The stator has a cylindrical armature core wound with an armature wiring. The core has slots disposed along a circumferential direction of the core so as to surround the rotor. Each slot extends in an axial direction of the core and has accommodation regions aligned along a radial direction of the core. Each region receives the wiring. The regions of each slot includes an innermost region and an outermost region, respectively, disposed on both ends of the slot in the radial direction. The wiring has end portions, respectively, drawn out from the outermost regions of different slots, and the wiring has a return portion of which both ends are drawn out from the innermost regions of two different slots.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 29, 2007
    Applicant: DENSO CORPORATION
    Inventors: Akiya Shichijoh, Shin Kusase
  • Publication number: 20070262672
    Abstract: According to the invention, there is provided a rotor for a rotating electrical machine which includes a rotary shaft, a pair of first and second pole cores fixed on the rotary shaft, a plurality of permanent magnets, and a magnet holder holding the permanent magnets. The magnet holder is made of a non-magnetic metal and has a plurality of holding portions and a plurality of connecting portions. Each of the holding portions is interposed between circumferentially adjacent two of claws of the first and second pole cores, so as to hold a corresponding one of the permanent magnets between the adjacent two claws. Each of the connecting portions circumferentially extends, through the radially inner side of a distal end portion of one of the claws of the first and second pole cores, to connect end portions of adjacent two of the holding portions which circumferentially bracket the distal end portion.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 15, 2007
    Applicant: DENSO CORPORATION
    Inventors: Takeo Maekawa, Shin Kusase
  • Publication number: 20070252488
    Abstract: A vehicle alternator is disclosed including a metallic frame supporting a stator having an armature winding and a rotor having a field winding. A rectifying unit is fixedly mounted on the frame for rectifying an alternating current voltage induced in the armature winding upon rotation of the rotor and comprises a stack of a positive-electrode radiating fin, carrying thereon a positive-electrode rectifier element, and a negative-electrode radiating fin, carrying thereon a negative-electrode rectifier element, between which a heat conducting sheet having insulation property is intervened. The frame carries thereon an insulating cover for covering the rectifying unit. The cover includes an encompassing section that collectively encompasses the positive-electrode rectifier element and an associated neighborhood to prevent the cooling wind drawn to an inside of the cover due to rotation of the cooling fan from directly impinging upon the positive-electrode rectifier element.
    Type: Application
    Filed: February 7, 2007
    Publication date: November 1, 2007
    Applicant: DENSO CORPORATION
    Inventors: Shin Kusase, Yuya Mizuma
  • Publication number: 20070247016
    Abstract: According to the invention, a tandem alternator includes a rotary shaft, a first and a second power generation unit that are arranged in tandem in the axial direction of the rotary shaft, a housing, a slip ring-brush mechanism provided around a rear end portion of the rotary shaft, and a first and a second rectifier that are respectively fixed to a front and a rear end face of the housing, and a controller. The controller is electrically connected between the first rectifier and the slip ring-brush mechanism to control, at least, supply of the first field current to the first field winding. The controller is configured to form a freewheeling circuit when the first field current is interrupted. The controller is fixed to the rear end face of the housing to minimize the distance from the controller to the slip ring-brush mechanism, thereby minimizing resistance loss of the freewheeling circuit.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 25, 2007
    Applicant: DENSO CORPORATION
    Inventors: Takeo Maekawa, Shin Kusase, Akiya Shichijoh
  • Publication number: 20070247011
    Abstract: According to the invention, a tandem alternator includes a rotary shaft, a first and a second power generation unit arranged in tandem in the axial direction of the rotary shaft, a housing accommodating the power generation units and having a plurality of air holes formed through a front end wall thereof, a pulley provided on a front end portion of the rotary shaft which protrudes outside from the first end wall of the housing, and a first and a second rectifier working to respectively rectify AC powers output from the first and second power generation units. The first rectifier is so fixed to the outer surface of the front end wall of the housing as to be located on the radially outside of the pulley and cover only part of the air holes. The second rectifier is fixed to the outer surface of a rear end wall of the housing.
    Type: Application
    Filed: April 20, 2007
    Publication date: October 25, 2007
    Applicant: DENSO CORPORATION
    Inventors: Akiya Shichijoh, Shin Kusase, Takeo Maekawa
  • Publication number: 20070241632
    Abstract: A brush holder in a tandem vehicle alternator for a vehicle is composed mainly of a primary brush holder and a secondary brush holder accommodating plural brushes, respectively. The primary and secondary brush holders are independently formed. During a step of producing a brush assembly and of mounting the brush assembly on the tandem vehicle alternator, both of the primary and secondary brush holders are integrated into a single brush holder and tightly fastened by welding using a connection metal member.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 18, 2007
    Applicant: DENSO CORPORATION
    Inventors: Takuzou Mukai, Akiya Shichijoh, Shin Kusase
  • Publication number: 20070241633
    Abstract: According to the invention, a tandem alternator includes a rotary shaft, a first and a second field arranged in tandem on the rotary shaft, and a first and a second armature arranged in tandem in the axial direction of the rotary shaft. The first armature is provided on an outer periphery of the first field to constitute a first power generation unit. The second armature is provided on an outer periphery of the second field to constitute a second power generation unit. The first and second fields are arranged to abut each other in the axial direction of the rotary shaft, so as to minimize the axial length of the alternator. The first and second fields are configured to respectively create a first and a second magnetomotive force whose directions are opposite to each other, so as to minimize magnetic leakage between the first and second power generation units.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 18, 2007
    Applicant: DENSO CORPORATION
    Inventors: Shin Kusase, Takeo Maekawa, Akiya Shichijoh