Patents by Inventor Takanori Ohkawa
Takanori Ohkawa 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: 11761520Abstract: In a linear drive device, a movable member is driven using a guide shaft and a lead screw supported by a bracket. Since a nut mechanism, which with the lead screw configures a feed screw mechanism, is provided with a first spring between two nuts, it is possible to limit rattling of the nuts with respect to the lead screw. Of the two nuts, the first nut provided on the side opposite a motor and a first plate is not able to move relative to the movable member in the axis direction. As a result, when a member to be driven is loaded on the movable member and the movable member is driven in the direction approaching the first plate, the first plate and members disposed therearound are not susceptible to interference by the member being driven.Type: GrantFiled: November 7, 2017Date of Patent: September 19, 2023Assignee: Continental Automotive Technologies GmbHInventors: Takanori Ohkawa, Hiroyuki Hatasako, Takafumi Kasuga, Takahisa Ueki, Ulrich Kolloch
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Patent number: 11539262Abstract: A connection structure of an electric component, a motor and a connection method of an electric component are provided. The connection structure of the electric component includes: an electric component main body having a connection terminal; a connector for wiring which is connected with the connection terminal; a base member; and a cover member. The base member is provided with an accommodation recessed part which accommodates inside a connected portion between the connection terminal and the connector. The accommodation recessed part has an opening part opened to an upper side. The cover member is attached to the base member so as to cover the opening part. An inside of the accommodation recessed part is filled with a sealing material which seals the connected portion between the connection terminal and the connector, and the sealing material fixes the connected portion, the base member and the cover member to each other.Type: GrantFiled: February 7, 2018Date of Patent: December 27, 2022Assignee: NIDEC SANKYO CORPORATIONInventors: Hiroshige Suguro, Takanori Ohkawa, Osamu Kodaira
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Publication number: 20200271930Abstract: A drive device includes a drive unit, a lead screw rotationally driven by the drive unit, and a movable member being moved by a driving force of the drive unit. The movable member includes a main body unit, a driving force transmitting unit configured to transmit a driving force of the drive unit to the main body unit, and preload applying units provided separately from the main body unit. The driving force transmitting unit includes a first thread unit to be screwed together with the lead screw and moves the main body unit in an axis direction of the lead screw with a rotation of the lead screw, and the preload applying units include a second thread unit to be screwed together with the lead screw and apply a preload between the first thread unit and the second thread unit.Type: ApplicationFiled: July 23, 2018Publication date: August 27, 2020Applicant: NIDEC SANKYO CORPORATIONInventors: Hiroyuki HATASAKO, Takanori OHKAWA, Takafumi KASUGA, Takahisa UEKI
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Publication number: 20200241297Abstract: A drive device used in a head-up display device, the drive device being accommodated in a housing of the head-up display device and being fixed to the housing. The drive device includes a motor having a rotation shaft and a motor case having an end face through which the rotation shaft is protruded, a vibration suppressing member, and a frame provided with a first plate part having a through hole and a second plate part extended from the first plate part. The motor is fixed to the first plate part in a state that the rotation shaft is penetrated through the through hole and the end face is contacted with the first plate part, the vibration suppressing member is fixed to the first plate part or the motor case, and the second plate part is provided with a frame side fixed part which is to be fixed to the housing.Type: ApplicationFiled: January 15, 2020Publication date: July 30, 2020Applicant: NIDEC SANKYO CORPORATIONInventors: Hiroyuki HATASAKO, Takanori OHKAWA, Takafumi KASUGA, Takahisa UEKI, Ken NOGUCHI, Masahiro WATANABE, Daiki FUNAMI
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Publication number: 20200014275Abstract: A connection structure of an electric component, a motor and a connection method of an electric component are provided. The connection structure of the electric component includes: an electric component main body having a connection terminal; a connector for wiring which is connected with the connection terminal; a base member; and a cover member. The base member is provided with an accommodation recessed part which accommodates inside a connected portion between the connection terminal and the connector. The accommodation recessed part has an opening part opened to an upper side. The cover member is attached to the base member so as to cover the opening part. An inside of the accommodation recessed part is filled with a sealing material which seals the connected portion between the connection terminal and the connector, and the sealing material fixes the connected portion, the base member and the cover member to each other.Type: ApplicationFiled: February 7, 2018Publication date: January 9, 2020Applicant: NIDEC SANKYO CORPORATIONInventors: Hiroshige SUGURO, Takanori OHKAWA, Osamu KODAIRA
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Publication number: 20190346028Abstract: In a linear drive device, a movable member is driven using a guide shaft and a lead screw supported by a bracket. Since a nut mechanism, which with the lead screw configures a feed screw mechanism, is provided with a first spring between two nuts, it is possible to limit rattling of the nuts with respect to the lead screw. Of the two nuts, the first nut provided on the side opposite a motor and a first plate is not able to move relative to the movable member in the axis direction. As a result, when a member to be driven is loaded on the movable member and the movable member is driven in the direction approaching the first plate, the first plate and members disposed therearound are not susceptible to interference by the member being driven.Type: ApplicationFiled: November 7, 2017Publication date: November 14, 2019Applicants: Continental Automotive GmbH, NIDEC SANKYO CORPORATIONInventors: Takanori OHKAWA, Hiroyuki HATASAKO, Takafumi KASUGA, Takahisa UEKI, Ulrich KOLLOCH
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Publication number: 20190305657Abstract: A motor may include a motor case, a terminal block holding terminal pins, a cover and a sealing resin body. The terminal pin may include a first end part for connecting with a coil wire and a second end part for connecting with an outside. A cover is disposed so as to cover the first end part and closes an opening part of the motor case together with the terminal block. A sealing resin body is provided so as to cover the terminal block, the cover and a side face of the motor case. A seal member is attached to each of the terminal pins protruded from the terminal block on the second end part side between the terminal block and a wall face from which the second end part is protruded, and the seal member seals between the terminal pins and the sealing resin body.Type: ApplicationFiled: March 15, 2019Publication date: October 3, 2019Inventors: Hiroshige SUGURO, Takanori OHKAWA, Osamu KODAIRA
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Patent number: 9897905Abstract: A head-up display includes a case main body formed with an opening part, a combiner capable of closing the opening part, a combiner drive unit including a drive device and a spring, and a projection unit. The combiner, the combiner drive unit and the projection unit are accommodated inside the case main body. The combiner drive unit is integrally provided with a second turnable shaft and a bearing turnably supporting the second turnable shaft is provided in a base part fixed to the case main body so as to be turnable with respect to the base part. A first spring for urging the bearing with respect to the base part in one direction is provided between the base part and the bearing. A second spring for urging the combiner drive unit with respect to the bearing in an opposite direction is provided between the bearing and the combiner drive unit.Type: GrantFiled: December 8, 2016Date of Patent: February 20, 2018Assignee: NIDEC SANKYO CMI CORPORATIONInventors: Takanori Ohkawa, Osamu Kodaira, Hiroyuki Hatasako, Takafumi Kasuga, Takahisa Ueki
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Publication number: 20170168300Abstract: A head-up display includes a case main body formed with an opening part, a combiner capable of closing the opening part, a combiner drive unit including a drive device and a spring, and a projection unit. The combiner, the combiner drive unit and the projection unit are accommodated inside the case main body. The combiner drive unit is integrally provided with a second turnable shaft and a bearing turnably supporting the second turnable shaft is provided in a base part fixed to the case main body so as to be turnable with respect to the base part. A first spring for urging the bearing with respect to the base part in one direction is provided between the base part and the bearing. A second spring for urging the combiner drive unit with respect to the bearing in an opposite direction is provided between the bearing and the combiner drive unit.Type: ApplicationFiled: December 8, 2016Publication date: June 15, 2017Applicant: NIDEC SANKYO CMI CORPORATIONInventors: Takanori OHKAWA, Osamu KODAIRA, Hiroyuki HATASAKO, Takafumi KASUGA, Takahisa UEKI
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Patent number: 7816819Abstract: A motor having a rotor in which a rotor magnet is fixed on the outer peripheral surface of a rotor body. The motor is configured so that the support shaft portion is formed of a material having a self-lubricating property, and a first sliding surface of the support shaft portion is supported rotatably. Also, the motor is configured so as to have a metallic motor casing, a rotor provided in the motor casing to drive a motor shaft projecting from the motor casing through a shaft hole in an end wall portion, a stator provided around the rotor in the motor casing to rotationally drive the rotor, a cover member provided to close the other end opening of the motor casing, and a connector body integrally formed of a resin so as to seal the other end opening of the motor casing from the outside of the cover member.Type: GrantFiled: January 27, 2005Date of Patent: October 19, 2010Assignee: Mitsubishi Materials C.M.I. CorporationInventors: Takanori Ohkawa, Takashi Ida, Osamu Kodaira
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Patent number: 7679251Abstract: A stepping motor is disclosed which is capable of obtaining desired driving torque without sacrificing magnetic properties of a magnet with respect to a stator, reducing inertia mass of a rotor by decreasing a use amount of a magnet material, and thereby, can enhance driving performance including control responsiveness.Type: GrantFiled: September 12, 2005Date of Patent: March 16, 2010Assignee: Mitsubishi Materials C.M.I. CorporationInventors: Takanori Ohkawa, Takashi Ida, Osamu Kodaira
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Publication number: 20090140584Abstract: There is provided a motor having a rotor in which a rotor magnet is fixed on the outer peripheral surface of a rotor body. The motor is configured so that the support shaft portion is formed of a material having a self-lubricating property, and a first sliding surface (33c) of the support shaft portion is supported rotatably. Also, the motor is configured so as to have a metallic motor casing (10), a rotor (30) provided in the motor casing (10) to drive a motor shaft (31) projecting from the motor casing (10) through a shaft hole (14) in an end wall portion (11b), a stator (20) provided around the rotor (30) in the motor casing (10) to rotationally drive the rotor (30), a cover member (40) provided to close the other end opening (12) of the motor casing (10), and a connector body (50) integrally formed of a resin so as to seal the other end opening (12) of the motor casing (10) from the outside of the cover member (40).Type: ApplicationFiled: January 27, 2005Publication date: June 4, 2009Inventors: Takanori Ohkawa, Takashi Ida, Osamu Kodaira
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Patent number: 7378768Abstract: An object of the present invention is to provide a stepping motor capable of reducing the number of components and the number of assembling steps, and its manufacturing method. In order to achieve the object, a stepping motor according to the present invention is constructed to include a bobbin which integrally holds a yoke and a connector housing which is disposed at one end portion in an axial direction of the bobbin and integrally holds a pin for connecting a coil wound around the bobbin to an external conductor, and to integrally form the bobbin and the connector housing of a resin.Type: GrantFiled: June 18, 2004Date of Patent: May 27, 2008Assignee: Mitsubishi Materials C.M.I. CorporationInventors: Takanori Ohkawa, Takashi Ida, Osamu Kodaira
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Publication number: 20080084125Abstract: A stepping motor which is capable of obtaining desired driving torque without sacrificing magnetic properties of a magnet with respect to a stator, reducing inertia mass of a rotor by decreasing a use amount of a magnet material, and thereby, can enhance driving performance including control responsiveness is provided.Type: ApplicationFiled: September 12, 2005Publication date: April 10, 2008Inventors: Takanori Ohkawa, Takashi Ida, Osamu Kodaira
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Publication number: 20060290226Abstract: An object of the present invention is to provide a stepping motor capable of reducing the number of components and the number of assembling steps, and its manufacturing method. In order to achieve the object, a stepping motor (1) according to the present invention is constructed to include a bobbin (22) which integrally holds a yoke (2) and a connector housing (26) which is disposed at one end portion in an axial direction of the bobbin (22) and integrally holds a pin (25) for connecting a coil (23) wound around the bobbin (22) to an external conductor, and to integrally form the bobbin (22) and the connector housing (26) of a resin.Type: ApplicationFiled: June 18, 2004Publication date: December 28, 2006Inventors: Takanori Ohkawa, Takashi Ida, Osamu Kodaira