Patents by Inventor Shigeru Maeda
Shigeru Maeda 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: 12040658Abstract: A motor armature includes a laminated body including a stack of magnetic bodies each having an annular and plate shape, an extended body that opposes an opposing peripheral surface that is at least one of an inner peripheral surface and an outer peripheral surface of the laminated body and extends along a stacking direction of the magnetic bodies, and a holder stacked on the laminated body in the stacking direction to hold the laminated body. The holder includes a plate portion that extends along the laminated body and has higher rigidity than the magnetic bodies, and a sleeve portion that extends in contact with the extended body.Type: GrantFiled: July 13, 2020Date of Patent: July 16, 2024Assignee: NIDEC CORPORATIONInventors: Shigeru Maeda, Ryoma Sasaki
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Patent number: 11478840Abstract: Provided is a manufacturing method of a wire rod for forming a coil, the manufacturing method including the steps of: placing an element wire in a forming space surrounded by a plurality of split dies; and pressure-forming the element wire by moving the plurality of split dies in a direction of narrowing the forming space. In the step of pressure-forming the element wire, at least one of the plurality of split dies is moved, and the plurality of split dies each having a surface that changes in shape in a longitudinal direction of an element wire to pressure-form the element wire into the wire rod having a plurality of different cross-sectional shapes in the longitudinal direction.Type: GrantFiled: June 12, 2018Date of Patent: October 25, 2022Assignee: NIDEC CORPORATIONInventors: Shigeharu Sumi, Shigeru Maeda
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Publication number: 20220247286Abstract: A core body has an annular shape surrounding a central axis extending in an axial direction and includes core pieces connected to each other along a circumferential direction and each including a core piece body and a connector fixed to the core piece body. The connectors in the core pieces adjacent to each other in the circumferential direction include rotating connection portions connected to each other to be rotatable about a rotation axis extending in the axial direction, and rotation stopping portions which come into contact with each other in a radial direction.Type: ApplicationFiled: January 12, 2022Publication date: August 4, 2022Inventors: Shigeru MAEDA, Tatsuki SHIGETA
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Publication number: 20220239167Abstract: A motor armature includes a laminated body including a stack of magnetic bodies each having an annular and plate shape, an extended body that opposes an opposing peripheral surface that is at least one of an inner peripheral surface and an outer peripheral surface of the laminated body and extends along a stacking direction of the magnetic bodies, and a holder stacked on the laminated body in the stacking direction to hold the laminated body. The holder includes a plate portion that extends along the laminated body and has higher rigidity than the magnetic bodies, and a sleeve portion that extends in contact with the extended body.Type: ApplicationFiled: July 13, 2020Publication date: July 28, 2022Inventors: Shigeru MAEDA, Ryoma SASAKI
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Patent number: 11065966Abstract: In an apparatus for controlling a motorized vehicle equipped with a main rechargeable battery, electrical loads electrically connected to the main rechargeable battery via a voltage converter, a converter operating point setter is configured to, when current is passing between the main rechargeable battery and the electrical loads, based on a charging/discharging amount of the main rechargeable battery, set operating points of the voltage converter, each specifying a power conversion efficiency representing a ratio of input power to the electrical loads to output power of the main rechargeable battery and an output current of the voltage converter. A converter controller is configured to, based on the operating point set by the converter operating point setter, cause the voltage converter to convert the voltage of the main rechargeable battery, thereby supplying power to the electrical loads.Type: GrantFiled: February 26, 2019Date of Patent: July 20, 2021Assignee: DENSO CORPORATIONInventors: Kousuke Baba, Shigeru Maeda, Chinatsu Washizu
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Patent number: 10953879Abstract: A vehicle control apparatus is applied to a vehicle including an engine as traveling drive source and a clutch device in a power transmission path connected to an output shaft of the engine. The vehicle control apparatus causes the vehicle to be in a coasting state by reducing power transmitted in the path by clutch device operation upon satisfaction of a predetermined implementation condition, and cancels coasting state by clutch device operation upon satisfaction of a predetermined coasting cancellation condition including at least an accelerator condition during coasting. The vehicle control apparatus includes a travel determination section determining coasting state of the vehicle, and a clutch control section performing half-clutch control during coasting at least at one of at the beginning of coasting and immediately before coasting is cancelled, the half-clutch control setting a degree of clutch device engagement to an intermediate degree.Type: GrantFiled: April 11, 2017Date of Patent: March 23, 2021Assignee: DENSO CORPORATIONInventors: Toshikazu Akita, Tomohisa Ose, Shigeru Maeda
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Patent number: 10940515Abstract: A milling apparatus includes a plurality of milling roller units each including one milling roller that is made contact with, by pressing, one surface of one of a plurality of differently angled plate parts of an elongated metal milling material and another milling roller that is made contact with another surface of the plate part by pressing. At least one of the milling roller units mills a plate part different from a plate part milled by any other milling roller unit. A plurality of the milling roller units configured to mill an identical plate part are installed in a longitudinal direction of the plate part. The one milling roller and the other milling roller of at least one of the milling roller units are movable in axial directions thereof.Type: GrantFiled: April 25, 2016Date of Patent: March 9, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takahiro Tachibana, Shigeru Maeda
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Patent number: 10910928Abstract: A stator assembly method in which coils that have slot housed portions and coil ends formed from a conductive wire are mounted to an annular stator core that has a plurality of teeth that extend from a back yoke toward an inner side in a radial direction and slots formed between two of the teeth.Type: GrantFiled: August 22, 2018Date of Patent: February 2, 2021Assignee: AISIN AW CO., LTD.Inventors: Shingo Hashimoto, Shigeru Maeda, Masumi Tomura, Shingo Sato
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Patent number: 10889174Abstract: A control apparatus sets an upper limit guard value to a base value when the MG provides torque assist to thereby limit the command value for the MG. Then, the control apparatus limits the command value for the MG using the upper limit guard value to limit the output of the MG. If an accelerator opening or the change rate thereof is not less than a predetermined value, the control apparatus corrects the upper limit guard value. The correction is made such that the larger accelerator opening or a larger change rate thereof causes the upper limit guard value to be larger to accomplish higher output. Similarly, if the SOC of the battery is not less than a predetermined value, the control apparatus corrects the upper limit guard value. If the engine speed is not less than a predetermined value, the control apparatus corrects the upper limit guard value.Type: GrantFiled: October 14, 2016Date of Patent: January 12, 2021Assignee: DENSO CORPORATIONInventors: Kohei Saito, Shigeru Maeda
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Patent number: 10875408Abstract: In an apparatus for controlling a motorized vehicle equipped with a rechargeable battery, a rotary electric machine electrically connected to the rechargeable battery, and electrical loads electrically connected to the rechargeable battery, a machine operating point setter is configured to, when current is passing between the rechargeable battery and the rotary electric machine, set operating points of the rotary electric machine, each specifying a system efficiency representing a ratio of input/output dynamical power of the rotary electric machine to input/output power of the rechargeable battery, a torque of the rotary electric machine, and a rotational speed of the rotary electric machine that are taken as parameters, based on the amount of current flowing through the rechargeable battery. A rotary electric machine controller is configured to control the rotary electric machine to operate at the operating points of the rotary electric machine set by the machine operating point setter.Type: GrantFiled: February 26, 2019Date of Patent: December 29, 2020Assignee: DENSO CORPORATIONInventors: Chinatsu Washizu, Shigeru Maeda, Kousuke Baba, Masaru Suzuki
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Patent number: 10680540Abstract: In an apparatus for controlling a motorized vehicle, a rotary electric machine controller is configured to perform intermittent operation by periodically alternating between a driving period and a coasting period. A torque determiner is configured to determine a first torque during the driving period and a second torque during the coasting period. A transition period determiner is configured to determine whether to set a transition period between the driving period and the coasting period. If the transition period is determined to be set, the torque determiner determines a third torque between the first torque and the second torque and within a predetermined rang. The rotary electric machine controller sets the transition period between the driving period and the coasting period and drive the rotary electric machine with the third torque during the transition period.Type: GrantFiled: February 26, 2019Date of Patent: June 9, 2020Assignee: DENSO CORPORATIONInventors: Masaru Suzuki, Kousuke Baba, Shigeru Maeda, Chinatsu Washizu
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Publication number: 20200139423Abstract: Provided is a manufacturing method of a wire rod for forming a coil, the manufacturing method including the steps of: placing an element wire in a forming space surrounded by a plurality of split dies; and pressure-forming the element wire by moving the plurality of split dies in a direction of narrowing the forming space. In the step of pressure-forming the element wire, at least one of the plurality of split dies is moved, and the plurality of split dies each having a surface that changes in shape in a longitudinal direction of an element wire to pressure-form the element wire into the wire rod having a plurality of different cross-sectional shapes in the longitudinal direction.Type: ApplicationFiled: June 12, 2018Publication date: May 7, 2020Inventors: Shigeharu SUMI, Shigeru MAEDA
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Patent number: 10479359Abstract: A restart control device is applied to a vehicle which is provided with an internal combustion engine, an electric motor, a driving wheel, and a clutch. The restart control device has a restart-condition determining portion which determines whether a restart condition for restarting the internal combustion engine is established while the vehicle is coasting; a push-start portion which starts the internal combustion engine by a push-start; a start-up portion which starts the internal combustion engine by use of an electric motor; and a doubly start-up portion which tries to start the internal combustion engine by one of the push-start portion and the start-up portion when the restart-condition determining portion determines that the restart condition is established. The doubly start-up portion tries to start the internal combustion engine by another one of the push-up portion and the start-up portion when the internal combustion engine has not been started.Type: GrantFiled: April 28, 2016Date of Patent: November 19, 2019Assignee: DENSO CORPORATIONInventors: Tomohisa Ose, Tadatoshi Asada, Shigeru Maeda, Takashi Senda
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Patent number: 10457285Abstract: A vehicle control device turns off a clutch to put a vehicle into an inertia operation state in response to a predetermined executing condition being met, and turns on the clutch to terminate the inertia operation state in response to a predetermined terminating condition being met during the inertia operation. The vehicle control device includes a deceleration degree calculating device, a determination device, and an operation control device. The deceleration degree calculating device calculates an actual deceleration degree. The determination device determines whether the actual deceleration degree is greater than a threshold value defined on the basis of a deceleration degree of the vehicle in an accelerator-off and clutch-on state. The operation control device terminates or maintains the inertia operation depending on a condition of the actual deceleration degree.Type: GrantFiled: February 25, 2016Date of Patent: October 29, 2019Assignee: DENSO CORPORATIONInventors: Shigeru Maeda, Akira Kato
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Publication number: 20190263275Abstract: In an apparatus for controlling a motorized vehicle equipped with a main rechargeable battery, electrical loads electrically connected to the main rechargeable battery via a voltage converter, a converter operating point setter is configured to, when current is passing between the main rechargeable battery and the electrical loads, based on a charging/discharging amount of the main rechargeable battery, set operating points of the voltage converter, each specifying a power conversion efficiency representing a ratio of input power to the electrical loads to output power of the main rechargeable battery and an output current of the voltage converter. A converter controller is configured to, based on the operating point set by the converter operating point setter, cause the voltage converter to convert the voltage of the main rechargeable battery, thereby supplying power to the electrical loads.Type: ApplicationFiled: February 26, 2019Publication date: August 29, 2019Applicant: DENSO CORPORATIONInventors: Kousuke BABA, Shigeru MAEDA, Chinatsu WASHIZU
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Publication number: 20190263272Abstract: In an apparatus for controlling a motorized vehicle equipped with a rechargeable battery, a rotary electric machine electrically connected to the rechargeable battery, and electrical loads electrically connected to the rechargeable battery, a machine operating point setter is configured to, when current is passing between the rechargeable battery and the rotary electric machine, set operating points of the rotary electric machine, each specifying a system efficiency representing a ratio of input/output dynamical power of the rotary electric machine to input/output power of the rechargeable battery, a torque of the rotary electric machine, and a rotational speed of the rotary electric machine that are taken as parameters, based on the amount of current flowing through the rechargeable battery. A rotary electric machine controller is configured to control the rotary electric machine to operate at the operating points of the rotary electric machine set by the machine operating point setter.Type: ApplicationFiled: February 26, 2019Publication date: August 29, 2019Applicant: DENSO CORPORATIONInventors: Chinatsu WASHIZU, Shigeru MAEDA, Kousuke BABA, Masaru SUZUKI
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Publication number: 20190267919Abstract: In an apparatus for controlling a motorized vehicle, a rotary electric machine controller is configured to perform intermittent operation by periodically alternating between a driving period and a coasting period. A torque determiner is configured to determine a first torque during the driving period and a second torque during the coasting period. A transition period determiner is configured to determine whether to set a transition period between the driving period and the coasting period. If the transition period is determined to be set, the torque determiner determines a third torque between the first torque and the second torque and within a predetermined rang. The rotary electric machine controller sets the transition period between the driving period and the coasting period and drive the rotary electric machine with the third torque during the transition period.Type: ApplicationFiled: February 26, 2019Publication date: August 29, 2019Applicant: DENSO CORPORATIONInventors: Masaru SUZUKI, Kousuke BABA, Shigeru MAEDA, Chinatsu WASHIZU
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Patent number: 10284060Abstract: A stator assembly method and stator assembly apparatus in which coils that have slot housed portions and coil ends formed from a conductor are mounted to an annular stator core that includes slots formed between adjacent teeth that extend from a back yoke toward an inner side in a radial direction.Type: GrantFiled: June 5, 2015Date of Patent: May 7, 2019Assignee: AISIN AW CO., LTD.Inventors: Shingo Hashimoto, Shingo Sato, Shigeru Maeda, Masumi Tomura
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Publication number: 20190118820Abstract: A vehicle control apparatus is applied to a vehicle including an engine as traveling drive source and a clutch device in a power transmission path connected to an output shaft of the engine. The vehicle control apparatus causes the vehicle to be in a coasting state by reducing power transmitted in the path by clutch device operation upon satisfaction of a predetermined implementation condition, and cancels coasting state by clutch device operation upon satisfaction of a predetermined coasting cancellation condition including at least an accelerator condition during coasting. The vehicle control apparatus includes a travel determination section determining coasting state of the vehicle, and a clutch control section performing half-clutch control during coasting at least at one of at the beginning of coasting and immediately before coasting is cancelled, the half-clutch control setting a degree of clutch device engagement to an intermediate degree.Type: ApplicationFiled: April 11, 2017Publication date: April 25, 2019Applicant: DENSO CORPORATIONInventors: Toshikazu AKITA, Tomohisa OSE, Shigeru MAEDA
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Publication number: 20180367014Abstract: A stator assembly method in which coils that have slot housed portions and coil ends formed from a conductive wire are mounted to an annular stator core that has a plurality of teeth that extend from a back yoke toward an inner side in a radial direction and slots formed between two of the teeth.Type: ApplicationFiled: August 22, 2018Publication date: December 20, 2018Applicant: AISIN AW CO., LTD.Inventors: Shingo HASHIMOTO, Shigeru MAEDA, Masumi TOMURA, Shingo SATO