Patents by Inventor Nobuo Mizutani

Nobuo Mizutani 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: 10883302
    Abstract: An opening-closing body driving motor includes a motor body, a drive circuit, and a control circuit. The motor body is provided to automatically open and close an opening-closing body of a vehicle. The drive circuit supplies driving power to the motor body. The control circuit includes a PWM controller. The control circuit is configured to adjust the driving power by PWM control and control an operation mode of the opening-closing body through the motor body such that the operation mode is changeable. The PWM controller is configured to have a control frequency of the PWM control include a frequency in an audible range based on a predetermined trigger so that the motor body vibrates in the audible range, thereby performing a sound producing operation. The predetermined trigger includes information about an opening-closing state of the opening-closing body or information about activation and deactivation of a child lock.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: January 5, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shigeru Sugiyama, Yutaka Naito, Ritsurou Hiramatsu, Teruyuki Toyoda, Motoya Yamamoto, Nobuo Mizutani
  • Patent number: 10760319
    Abstract: An open-close body driving device includes a motor configured to open and close an open-close body included in a vehicle and a controller controlling a movement speed of the open-close body driven by the motor. The controller is configured to move the open-close body at a normal speed based on a vehicle-side operating signal output by operation of an operating switch installed on the vehicle and at a speed lower than the normal speed based on a remote operating signal output by operation of a mobile device. The controller is configured so that in a shutting region having a predetermined dimension from a fully-closed position toward an open side, closing movement of the open-close body based on the remote operating signal is slower than closing movement of the open-close body based on the vehicle-side operating signal.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: September 1, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kazuyuki Shibata, Nobuo Mizutani
  • Publication number: 20190085611
    Abstract: An open-close body driving device includes a motor configured to open and close an open-close body included in a vehicle and a controller controlling a movement speed of the open-close body driven by the motor. The controller is configured to move the open-close body at a normal speed based on a vehicle-side operating signal output by operation of an operating switch installed on the vehicle and at a speed lower than the normal speed based on a remote operating signal output by operation of a mobile device. The controller is configured so that in a shutting region having a predetermined dimension from a fully-closed position toward an open side, closing movement of the open-close body based on the remote operating signal is slower than closing movement of the open-close body based on the vehicle-side operating signal.
    Type: Application
    Filed: September 6, 2018
    Publication date: March 21, 2019
    Applicant: DENSO CORPORATION
    Inventors: Kazuyuki SHIBATA, Nobuo MIZUTANI
  • Publication number: 20190003238
    Abstract: An opening-closing body driving motor includes a motor body, a drive circuit, and a control circuit. The motor body is provided to automatically open and close an opening-closing body of a vehicle. The drive circuit supplies driving power to the motor body. The control circuit includes a PWM controller. The control circuit is configured to adjust the driving power by PWM control and control an operation mode of the opening-closing body through the motor body such that the operation mode is changeable. The PWM controller is configured to have a control frequency of the PWM control include a frequency in an audible range based on a predetermined trigger so that the motor body vibrates in the audible range, thereby performing a sound producing operation. The predetermined trigger includes information about an opening-closing state of the opening-closing body or information about activation and deactivation of a child lock.
    Type: Application
    Filed: March 16, 2017
    Publication date: January 3, 2019
    Applicant: DENSO CORPORATION
    Inventors: Shigeru SUGIYAMA, Yutaka NAITO, Ritsurou HIRAMATSU, Teruyuki TOYODA, Motoya YAMAMOTO, Nobuo MIZUTANI
  • Patent number: 9531233
    Abstract: A motor includes a motor unit, a gear housing coupled to the motor unit, and a connector module including a connector housing coupled to the gear housing. The motor unit includes a rotation shaft and a power terminal. The gear housing accommodates a deceleration mechanism that outputs decelerated rotation of the rotation shaft. The connector terminal and the circuit substrate are fixed to the connector housing. The power terminal is connected to a socket of the connector terminal when coupling the connector housing to the gear housing. The connector terminal includes a fixed portion fixed to the connector housing, a substrate connecting portion connected to the circuit substrate, and a supported portion located closer to the socket than the substrate connecting portion. The connector housing includes a terminal supporting portion that supports the supported portion from the rear in the coupling direction.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: December 27, 2016
    Assignee: ASMO CO., LTD.
    Inventors: Yoshio Aoki, Nobuo Mizutani, Tomoaki Ozaki
  • Patent number: 9455607
    Abstract: A clutch including a drive shaft, drive side rotation body, driven shaft, driven side rotation body, clutch housing, and lock member is disclosed. During non-rotation of the drive side rotation body, when the driven side rotation body is rotated, the lock member is pushed by the driven side rotation body and moved outward in a radial direction thereby bringing the contact portion into contact with the inner circumferential surface of the clutch housing. During rotation of the drive side rotation body, the drive side rotation body pushes a drive side cam surface in the rotation direction, and the drive side cam surface acts to move the lock member inward in the radial direction and push the lock member against the driven side rotation body. Thus, the lock member is sandwiched between the drive side rotation body and the driven side rotation body thereby coupling the drive side rotation body and the driven side rotation body with the lock member to be integrally rotatable.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: September 27, 2016
    Assignee: ASMO CO., LTD.
    Inventors: Nobuo Mizutani, Tomoki Yamashita
  • Patent number: 9136744
    Abstract: A motor includes a motor unit, a deceleration unit, and a connector unit. The motor unit outputs rotational drive force and includes a yoke housing, a commutator, a power supply brush, a conductive member, and a brush holder. The yoke housing has an open end in an axial direction. The conductive member is electrically connected to the power supply brush. The brush holder is arranged in the open end to hold the commutator, the power supply brush, and the conductive member. The deceleration unit includes a gear housing coupled to the open end. The connector unit is coupled to the gear housing and including a connection terminal electrically connected to the conductive member. The commutator and the power supply brush are arranged outside the yoke housing. The conductive member and the yoke housing are arranged on opposite sides of the commutator.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: September 15, 2015
    Assignee: Asmo Co., Ltd.
    Inventor: Nobuo Mizutani
  • Patent number: 9077231
    Abstract: The axial direction of a worm wheel is defined as a motor short-transverse direction, and a plane orthogonal to the motor short-transverse direction is defined as a motor flat plane. An imaginary plane contacting a first end of a sensor magnet in a motor short-transverse direction and parallel with the flat plane is defined as a first imaginary plane. An imaginary plane contacting a second end of the sensor magnet in the motor short-transverse direction and parallel with the flat plane is defined as a second imaginary plane. A control circuit board is provided with a rotation detecting element that detects rotation of the rotary shaft of the motor. The control circuit board is arranged to be parallel with or inclined relative to the flat plane, and is provided between the first and second imaginary planes.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: July 7, 2015
    Assignee: Asmo Co., Ltd.
    Inventors: Tomoaki Ozaki, Hiroshi Kokubu, Nobuo Mizutani, Mitsuhiro Takada
  • Patent number: 8901800
    Abstract: A motor includes a motor portion and a speed reducing portion. In the motor portion, a brush holder that holds a feeder brush for feeding electric power to a commutator is arranged at an opening of a yoke. The speed reducing portion has a speed reducing mechanism, which is arranged in a gear housing. The speed reducing mechanism outputs drive force produced by a rotary shaft of the motor portion with the rotating speed of the rotary shaft reduced by the speed reducing mechanism. A brush holder includes a support pillar projecting toward the gear housing and an urging member that urges the feeder brush against the commutator. A positioning portion for positioning the brush holder with respect to the gear housing in a direction perpendicular to the axial direction is formed at a distal end portion of the support pillar.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: December 2, 2014
    Assignee: Asmo Co., Ltd.
    Inventor: Nobuo Mizutani
  • Patent number: 8901792
    Abstract: A brush holder is provided in a metal yoke. The brush holder holds feeder brushes for supplying power to a commutator. The commutator and the feeder brushes are arranged outside the yoke housing as seen in a direction orthogonal to the axis of the yoke. As seen in the axial direction, proximal ends of the feeder brushes are arranged outside the inner circumferential surface of the yoke.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: December 2, 2014
    Assignee: Asmo Co., Ltd.
    Inventor: Nobuo Mizutani
  • Publication number: 20140132095
    Abstract: A motor includes a motor unit, a gear housing coupled to the motor unit, and a connector module including a connector housing coupled to the gear housing. The motor unit includes a rotation shaft and a power terminal. The gear housing accommodates a deceleration mechanism that outputs decelerated rotation of the rotation shaft. The connector terminal and the circuit substrate are fixed to the connector housing. The power terminal is connected to a socket of the connector terminal when coupling the connector housing to the gear housing. The connector terminal includes a fixed portion fixed to the connector housing, a substrate connecting portion connected to the circuit substrate, and a supported portion located closer to the socket than the substrate connecting portion. The connector housing includes a terminal supporting portion that supports the supported portion from the rear in the coupling direction.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Applicant: ASMO CO., LTD.
    Inventors: Yoshio AOKI, Nobuo MIZUTANI, Tomoaki OZAKI
  • Publication number: 20130285492
    Abstract: The axial direction of a worm wheel is defined as a motor short-transverse direction, and a plane orthogonal to the motor short-transverse direction is defined as a motor flat plane. An imaginary plane contacting a first end of a sensor magnet in a motor short-transverse direction and parallel with the flat plane is defined as a first imaginary plane. An imaginary plane contacting a second end of the sensor magnet in the motor short-transverse direction and parallel with the flat plane is defined as a second imaginary plane. A control circuit board is provided with a rotation detecting element that detects rotation of the rotary shaft of the motor. The control circuit board is arranged to be parallel with or inclined relative to the flat plane, and is provided between the first and second imaginary planes.
    Type: Application
    Filed: April 22, 2013
    Publication date: October 31, 2013
    Applicant: Asmo Co., Ltd
    Inventors: Tomoaki OZAKI, Hiroshi KOKUBU, Nobuo MIZUTANI, Mitsuhiro TAKADA
  • Patent number: 8378549
    Abstract: Each of a plurality of brushes is tilted relative to an imaginary plane that is perpendicular to a rotational axis of an armature and is placed on one axial side of a brush holder, at which an interior of a yoke housing is located. A radial inner end part of each brush has a slide contact surface, which is generally parallel to the rotational axis of the armature and slidably contacts an outer peripheral surface of a commutator. At least a portion of the slide contact surface of each brush is axially disposed outside of an opening of the yoke housing.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: February 19, 2013
    Assignee: Asmo Co., Ltd.
    Inventor: Nobuo Mizutani
  • Patent number: 8242648
    Abstract: A control circuit member provided in a motor is disclosed. The motor includes a motor main body having a rotary shaft and a gear housing integrated with the motor main body. The control circuit member includes a circuit substrate on which a rotation detecting element is mounted and a substrate support member. The circuit substrate is accommodated in a circuit accommodating portion in the gear housing. The substrate support member supports the circuit substrate inside the circuit accommodating portion. The control circuit member is configured to be insertable into the circuit accommodating portion along the axial direction of the rotary shaft. The circuit substrate is configured to be arrangeable inside the circuit accommodating portion while being inclined with respect to the axial direction of the rotary shaft, so as to cause the rotation detecting element to approach the detector magnet.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: August 14, 2012
    Assignee: Asmo Co., Ltd.
    Inventors: Nobuo Mizutani, Shingo Omori, Mitsuhiro Takada, Hiroyuki Takikawa
  • Publication number: 20120194020
    Abstract: A brush holder is provided in a metal yoke. The brush holder holds feeder brushes for supplying power to a commutator. The commutator and the feeder brushes are arranged outside the yoke housing as seen in a direction orthogonal to the axis of the yoke. As seen in the axial direction, proximal ends of the feeder brushes are arranged outside the inner circumferential surface of the yoke.
    Type: Application
    Filed: January 19, 2012
    Publication date: August 2, 2012
    Inventor: Nobuo MIZUTANI
  • Publication number: 20120161560
    Abstract: A motor includes a motor unit, a deceleration unit, and a connector unit. The motor unit outputs rotational drive force and includes a yoke housing, a commutator, a power supply brush, a conductive member, and a brush holder. The yoke housing has an open end in an axial direction. The conductive member is electrically connected to the power supply brush. The brush holder is arranged in the open end to hold the commutator, the power supply brush, and the conductive member. The deceleration unit includes a gear housing coupled to the open end. The connector unit is coupled to the gear housing and including a connection terminal electrically connected to the conductive member. The commutator and the power supply brush are arranged outside the yoke housing. The conductive member and the yoke housing are arranged on opposite sides of the commutator.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: Asmo Co., Ltd.
    Inventor: Nobuo MIZUTANI
  • Publication number: 20120161559
    Abstract: A motor includes a motor portion and a speed reducing portion. In the motor portion, a brush holder that holds a feeder brush for feeding electric power to a commutator is arranged at an opening of a yoke. The speed reducing portion has a speed reducing mechanism, which is arranged in a gear housing. The speed reducing mechanism outputs drive force produced by a rotary shaft of the motor portion with the rotating speed of the rotary shaft reduced by the speed reducing mechanism. A brush holder includes a support pillar projecting toward the gear housing and an urging member that urges the feeder brush against the commutator. A positioning portion for positioning the brush holder with respect to the gear housing in a direction perpendicular to the axial direction is formed at a distal end portion of the support pillar.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 28, 2012
    Applicant: Asmo Co., Ltd.
    Inventor: Nobuo Mizutani
  • Publication number: 20120098367
    Abstract: A clutch including a drive shaft, drive side rotation body, driven shaft, driven side rotation body, clutch housing, and lock member is disclosed. During non-rotation of the drive side rotation body, when the driven side rotation body is rotated, the lock member is pushed by the driven side rotation body and moved outward in a radial direction thereby bringing the contact portion into contact with the inner circumferential surface of the clutch housing. During rotation of the drive side rotation body, the drive side rotation body pushes a drive side cam surface in the rotation direction, and the drive side cam surface acts to move the lock member inward in the radial direction and push the lock member against the driven side rotation body. Thus, the lock member is sandwiched between the drive side rotation body and the driven side rotation body thereby coupling the drive side rotation body and the driven side rotation body with the lock member to be integrally rotatable.
    Type: Application
    Filed: June 22, 2010
    Publication date: April 26, 2012
    Applicant: ASMO CO., LTD.
    Inventors: Nobuo Mizutani, Tomoki Yamashita
  • Patent number: 7973448
    Abstract: A brush holder having brush holding portions and coil holding portions is disclosed. Each brush holding portion holds a brush such that the brush is slidable on a commutator attached to a rotary shaft. Each coil holding portion holds a choke coil electrically connected to one of the coils. The brush holder includes a holder base member and brush holding members that are assembled to the holder base member so as to form the brush holding portions. Each brush holding member includes a coil supporting portion, which forms the coil holding portion between the corresponding brush holding member and the holder base member.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: July 5, 2011
    Assignee: ASMO Co., Ltd.
    Inventors: Shingo Omori, Nobuo Mizutani
  • Patent number: RE47564
    Abstract: The axial direction of a worm wheel is defined as a motor short-transverse direction, and a plane orthogonal to the motor short-transverse direction is defined as a motor flat plane. An imaginary plane contacting a first end of a sensor magnet in a motor short-transverse direction and parallel with the flat plane is defined as a first imaginary plane. An imaginary plane contacting a second end of the sensor magnet in the motor short-transverse direction and parallel with the flat plane is defined as a second imaginary plane. A control circuit board is provided with a rotation detecting element that detects rotation of the rotary shaft of the motor. The control circuit board is arranged to be parallel with or inclined relative to the flat plane, and is provided between the first and second imaginary planes.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: August 6, 2019
    Assignee: DENSO CORPORATION
    Inventors: Tomoaki Ozaki, Hiroshi Kokubu, Nobuo Mizutani, Mitsuhiro Takada