Patents Assigned to ASMO Co., Ltd.
  • Patent number: 10734852
    Abstract: A motor includes a stator, a rotor and a case. The rotor includes a first rotor core, a second rotor core, and a field magnet. Each of the first rotor core and the second rotor core includes a core base and a plurality of claw poles. The field magnet is located between the core bases. The case includes a cylindrical yoke housing and a lid. To balance magnetic flux from the first rotor core with magnetic flux from the second rotor core, the distance between the rotor and the stator is varied from the distance between the rotor and the yoke housing or the teeth of the stator are shaped to enable magnetic saturation.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 4, 2020
    Assignee: ASMO CO., LTD.
    Inventors: Koji Mikami, Shigemasa Kato, Yoji Yamada, Seiya Yokoyama
  • Patent number: 10432067
    Abstract: A control circuit controls, based on detection values of Hall-effect sensors, an inverter circuit to activate a rotor. After the activation of the rotor, the control circuit controls the rotational speed of the rotor based on the detection value of the Hall-effect sensor. A sensor pin is arranged in a slot between a forward-wound portion and a reverse-wound portion of a U-phase winding. A sensor pin is arranged in a slot between a forward-wound portion and a reverse-wound portion of a V-phase winding. A sensor pin is located on one side in an axial direction with respect to the reverse-wound portion of the U-phase winding. The sensor pins are located respectively at two first positions.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: October 1, 2019
    Assignees: DENSO CORPORATION, ASMO CO., LTD.
    Inventors: Taishi Iwanaga, Shigeki Uchiyama, Takehide Omura, Takuya Saito, Takehiko Ohshita
  • Patent number: 10164487
    Abstract: A motor includes a rotation shaft, a stator, and a rotor. The stator includes an armature winding and a stator core including a main core portion with an axial stack of core sheets and a magnetic plate on an end thereof. Each core sheet includes a tooth formation portion around which the armature winding is wound. The magnetic plate includes a stacked portion and an axially extending portion. The stacked portion stacked on the axial end of the main core portion and includes an end located toward the rotor. The axially extending portion extends toward the outer side in the axial direction from the end of the stacked portion located toward the rotor and is opposed to the rotor in a radial direction of the motor. The axially extending portion is shaped to be magnetically skewed in a circumferential direction relative to the tooth formation portion and the stacked portion.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: December 25, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Tatsunori Banba, Hiroshi Katai, Yuusuke Tateishi, Yuuji Yamashita, Takumi Suzuki, Kenji Obata, Yoshimasa Kinpara, Takashi Nagaya
  • Publication number: 20180269729
    Abstract: A motor comprises an A-phase stator unit, a B-phase stator unit, and a rotor. The phase stator unit and the B-phase stator unit respectively contain a coil unit and a pair of stator cores, each pair of stator cores having a plurality of claw-shaped magnetic poles. The rotor comprises at least two permanent magnets facing the claw-shaped magnetic poles of the A-phase stator unit and the claw-shaped magnetic poles of the B-phase stator unit, respectively. The A-phase stator unit and the B-phase stator unit are provided side by side in the axial direction, displaced from one another by a prescribed electrical angle. The two permanent magnets are arranged side by side in the axial direction, displaced from one another by a prescribed electrical angle. The direction of displacement between the A-phase stator unit and the B-phase stator unit is the opposite of the direction of displacement between the two permanent magnets.
    Type: Application
    Filed: November 29, 2016
    Publication date: September 20, 2018
    Applicant: ASMO CO., LTD.
    Inventors: Yoshiaki TAKEMOTO, Shigemasa KATO, Masashi MATSUDA, Hironari SUZUKI, Kazunori SHIMADA, Sho NAKANO, Takahiro TSUCHIYA
  • Patent number: 10074951
    Abstract: A commutator includes an insulating section that is formed in a tube shape including a shaft insertion hole through which a shaft is inserted, and that is formed with an indented portion in an end portion at one side in an axial direction of the shaft. The commutator also includes plural segments that are supported by an outer peripheral portion of the insulating section, that are arrayed around a circumferential direction of the insulating section with spacings therebetween, and that are each provided with an anchor portion at an end portion at the one side in the axial direction of the shaft. The commutator also includes a first, second, third short-circuit wires, each connecting the anchor portion of respective one segment to the anchor portion of respective another segment, and at least a portion being disposed inside the indented portion formed at the insulating section.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: September 11, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Akihiko Seki, Yasuhiro Kanematsu, Noriyasu Nishio, Norifumi Suzuki, Tsuyoshi Suzuki, Kazuo Kato, Toshiyuki Natsume, Kenichi Sugibayashi
  • Patent number: 10069351
    Abstract: There is provided an armature including: an armature core that includes plural tooth portions extending in a radial direction and disposed in a row around a circumferential direction; an insulator including plural insulation portions integrated with the armature core; plural windings each including plural wound portions wound on the tooth portions with the insulation portions interposed between the wound portions and the tooth portions, and a crossing wire connecting the plural wound portions together; wherein at a tooth portion, a terminal portion of a wound portion and a terminal portion of a crossing wire are positioned at side portions of the tooth portion on the same side as each other in the circumferential direction; and the insulator is provided with a retaining section that retains the terminal portion of the wound portion and guides the terminal portion of the crossing wire.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: September 4, 2018
    Assignee: ASMO CO., LTD.
    Inventor: Shigeaki Kageme
  • Publication number: 20180248449
    Abstract: A control circuit controls, based on detection values of Hall-effect sensors, an inverter circuit to activate a rotor. After the activation of the rotor, the control circuit controls the rotational speed of the rotor based on the detection value of the Hall-effect sensor. A sensor pin is arranged in a slot between a forward-wound portion and a reverse-wound portion of a U-phase winding. A sensor pin is arranged in a slot between a forward-wound portion and a reverse-wound portion of a V-phase winding. A sensor pin is located on one side in an axial direction with respect to the reverse-wound portion of the U-phase winding. The sensor pins are located respectively at two first positions.
    Type: Application
    Filed: August 12, 2016
    Publication date: August 30, 2018
    Applicants: DENSO CORPORATION, ASMO CO., LTD.
    Inventors: Taishi IWANAGA, Shigeki UCHIYAMA, Takehide OMURA, Takuya SAITO, Takehiko OHSHITA
  • Patent number: 10014746
    Abstract: In a rotary electric machine, wound wires are connected to a first terminal and a second terminal. Circuit terminals that are configured from a conductive metal other than aluminum, and the first terminal and the second terminal that are configured from a metal with a principal component of aluminum are joined together inside a circuit chamber that has high water resistant properties. Corrosion is accordingly suppressed at join sites of the circuit terminals with the first terminal and the second terminal. There is therefore no need to coat the join sites with for example a sealing material in order to suppress corrosion at the join sites. Good electrical continuity is accordingly enabled between the circuit terminals and the wound wires while suppressing an increase in costs, even when the wound wire is configured from a metal with a principal component of aluminum.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: July 3, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Hidenori Kanda, Shigeaki Kageme, Takahiro Nakayama, Yoshiyuki Takabe
  • Patent number: 10008909
    Abstract: A motor driving control device for a vehicle that includes: a circuit board on which is packaged a circuit that generates the voltage applied to windings of a motor, the circuit board having a ground region; a heat dissipating member that dissipates heat from the circuit board, and that is electrically connected to the ground region on the circuit board; a supporting member that holds the circuit board and a bearing member of the motor, and that has an insulating surface; and an electrically-conductive member that is provided at a surface of the supporting member, and that, by electrically connecting the bearing member and the heat dissipating member, grounds a rotating body, an output shaft and the bearing member of the motor.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: June 26, 2018
    Assignee: ASMO CO., LTD.
    Inventor: Kentaro Ozaki
  • Patent number: 10005433
    Abstract: The wiper-washer control device includes a wiper motor that causes a wiper blade to perform a wiping operation, a washer pump that causes a washer fluid to be sprayed, and a controller that, in cases in which defrosting has been instructed, controls the wiper motor and the washer pump such that a defrosting operation in which the wiping operation and spraying of washer fluid is performed in a predetermined combination.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: June 26, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Shinji Oka, Naoya Mitsuoka, Wataru Uemura, Yuji Katsumata
  • Patent number: 10003138
    Abstract: In a noise suppression device of a washer pump, a first capacitor and a second capacitor are disposed with their height directions along a first direction orthogonal to an axial direction of the washer pump. This thereby enables installation space for the first capacitor and the second capacitor to be suppressed from becoming larger in the axial direction. A second terminal of the second capacitor is disposed between first terminals of the first capacitor. This thereby enables the installation space of the first capacitor and the second capacitor to be made smaller in the first direction and in a second direction orthogonal to the axial direction. The space between the pair of first terminals (the second terminals) is accordingly efficiently utilized for disposing the second terminal (the first terminal), enabling the first capacitor and the second capacitor to be disposed efficiently.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: June 19, 2018
    Assignee: ASMO CO., LTD.
    Inventor: Satoshi Annen
  • Patent number: 9994196
    Abstract: A wiper device includes: a wiper motor including an output shaft configured to be forward-and-reverse rotated and causing to-and-fro operation of a wiper blade, the wiper blade being connected to the wiper motor via a wiper arm; an acquisition section that acquires positioning data or ambient temperature data; and a controller that controls the wiper motor such that the output shaft forward-and-reverse rotates within a first rotation angle to stop or return the wiper blade at or to a first lower position where the wiper blade is hidden by a rear end of an engine hood of the vehicle, and such that the output shaft forward-and-reverse rotates within a second rotation angle to stop or return the wiper blade at or to a second lower position above the first lower position where the wiper blade is not hidden by the rear end of the engine hood in a cold environment.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 12, 2018
    Assignee: ASMO Co., Ltd.
    Inventor: Takashi Natsume
  • Publication number: 20180152064
    Abstract: This motor includes a two-layer rotor, a two-layer stator and a control unit. An A-phase rotor includes a pair of rotor cores and a field magnet. A B-phase rotor includes a pair of rotor cores and a field magnet. An A-phase stator includes a pair of stator cores and an A-phase winding. A B-phase stator includes a pair of stator cores and a B-phase winding. The control unit controls an A-phase input voltage applied to the A-phase winding, and a B-phase input voltage applied to the B-phase winding. The relative arrangement angle of the A-phase stator and the A-phase rotor relative to the B-phase stator and the B-phase rotor is set to an electrical angle of 90 degrees. The control unit applies a leading phase angle to the basic voltage waveforms of the A-phase input voltage and the B-phase input voltage, to set the energization width to at most 180 degrees.
    Type: Application
    Filed: August 18, 2016
    Publication date: May 31, 2018
    Applicant: ASMO CO., LTD.
    Inventors: Yoko TATEISHI, Yoshiaki TAKEMOTO, Masashi MATSUDA, Hironari SUZUKI, Seiya YOKOYAMA, Shigemasa KATO, Kazunori SHIMADA, Takahiro TSUCHIYA
  • Patent number: 9981636
    Abstract: A wiper blade extends in a longitudinal direction and includes a blade rubber, a plate spring-like backing, and a rubber holder. The blade rubber wipes a wiped surface. The backing adds rigidity and elasticity to the blade rubber. The rubber holder holds an intermediate portion of the blade rubber in the longitudinal direction and an intermediate portion of the backing in the longitudinal direction. The rubber holder includes a backing accommodation slot that accommodates and holds the backing. The backing accommodation slot extends through the rubber holder in the longitudinal direction. The parting line is set in a middle section of the backing accommodation slot in the longitudinal direction.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: May 29, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Takao Yoshimoto, Masahiro Oota
  • Patent number: 9979255
    Abstract: In a rotary electric machine, wound wires are connected to a first terminal and a second terminal. Circuit terminals that are configured from a conductive metal other than aluminum, and the first terminal and the second terminal that are configured from a metal with a principal component of aluminum are joined together inside a circuit chamber that has high water resistant properties. Corrosion is accordingly suppressed at join sites of the circuit terminals with the first terminal and the second terminal. There is therefore no need to coat the join sites with for example a sealing material in order to suppress corrosion at the join sites. Good electrical continuity is accordingly enabled between the circuit terminals and the wound wires while suppressing an increase in costs, even when the wound wire is configured from a metal with a principal component of aluminum.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: May 22, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Hidenori Kanda, Shigeaki Kageme, Takahiro Nakayama, Yoshiyuki Takabe
  • Patent number: 9966807
    Abstract: A brushless motor includes a first rotor core, a second rotor core, and a field magnet member. The first rotor core includes primary projecting pieces arranged along a circumferential direction at equal intervals. The second rotor core has the same shape as the first rotor core, and includes secondary projecting pieces arranged along the circumferential direction at equal intervals. The secondary projecting pieces are positioned between the primary projecting pieces that are adjacent to one another in the circumferential direction. The field magnet member is arranged between the first rotor core and the second rotor core. The field magnet member is magnetized along an axial direction to generate primary magnetic poles in the primary projecting pieces, and generate secondary magnetic poles in the secondary projecting pieces. A rotor includes the first rotor core, the second rotor core, and the field magnet member.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: May 8, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Seiya Yokoyama, Yoshiaki Takemoto
  • Patent number: 9937899
    Abstract: A wiper arm comprising an arm main body; a first nozzle portion disposed at a first predetermined position in a length direction of the arm main body; a second nozzle portion disposed at a second predetermined position in the length direction of the arm main body, and jets washing fluid toward a position that is different from an impact point of the washing fluid jetted from the first nozzle portion; a first line hose accommodated in the arm main body and connected to the first nozzle portion; a second line hose accommodated in the arm main body side-by-side with the first line hose and connected to the second nozzle portion; and a hose retention unit attached to the arm main body and that comprises: a first hose retention portion retaining the first line hose; and a second hose retention portion provided integrally with the first hose retention portion and retaining the second line hose.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: April 10, 2018
    Assignee: ASMO CO., LTD.
    Inventor: Takashi Umeno
  • Patent number: 9932015
    Abstract: A blade rubber has an elongate shape extending along a longitudinal direction. The blade rubber includes a basal portion retained by a rubber holder and a wiping portion extending downward from the basal portion. The wiping portion slidably contacts and wipes a wiped surface along a width direction. The wiping portion has a cross-sectional shape, which inclines with respect to a downward hanging direction when the blade rubber is in an unloaded state. The cross-sectional shape is a shape of a cross-sectional surface of the wiping portion. The cross-sectional surface extends along a direction perpendicular to the longitudinal direction. The downward hanging direction is a direction, which extends along a direction perpendicular to the longitudinal direction and the width direction.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: April 3, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Hiroyuki Nakano, Sohei Yamada
  • Patent number: 9935517
    Abstract: A first end contact portion of a first frame end contacts one end surface of a stator core. A second end contact portion of a second frame end contacts the other end surface of the stator core and includes an inner tubular part, which contacts the other end surface of the stator core, and a fixing part, which projects radially outward from the inner tubular part and contacts the other end surface. A through-bolt is threaded into the fixing part. An outer diameter of the one end surface is smaller than an outer diameter of an opposing surface of the first end contact portion. An outer diameter of an opposing surface of the inner tubular part is smaller than an outer diameter of the other end surface. A yoke of the stator core includes a relief groove, into which a portion of the through-bolt is fitted.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: April 3, 2018
    Assignees: DENSO CORPORATION, ASMO CO., LTD.
    Inventor: Yusuke Tateishi
  • Patent number: 9932017
    Abstract: A vehicle wiper comprises a retainer that is formed in an elongated shape open at the lower side facing toward a windshield, and that is provided so as to be capable of swinging about a shaft axis of a pivot shaft that is swung to-and-fro; a first nozzle member that is housed inside the retainer, and that is capable of ejecting washer fluid from an ejection portion; and 1 a retainer cover member that closes off an opening of the retainer, and that is formed with a window through which the ejection portion of the first nozzle member is externally exposed.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 3, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Keita Uchiyama, Yoshiyuki Uchino, Kouichi Hirao, Takao Yoshimoto, Akio Shimizu