Patents by Inventor Masataka Hirano
Masataka Hirano 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: 11927234Abstract: A vibration proofing device includes a bracket having an internal space, and a vibration proofing member inserted into the internal space. The internal space is open on an outer surface of the bracket. At least a pair of facing-each-other surfaces, against which the vibration proofing member is pressed, is formed in an inner surface of the bracket. A distance between the pair of the facing-each-other surfaces on a far side in an insertion direction of the vibration proofing member is the same, in at least some regions of the bracket, as that on a near side in the insertion direction. This provides the vibration proofing device and the bracket to allow for compactly configuring the device as a whole, while sufficiently securing a retaining force between the bracket and the vibration proofing member.Type: GrantFiled: June 3, 2020Date of Patent: March 12, 2024Assignees: YAMASHITA RUBBER CO., LTD., HONDA MOTOR CO., LTD.Inventors: Hirokazu Kadowaki, Masataka Hirano, Yusuke Arai
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Patent number: 11440589Abstract: A subframe structure includes: a left-right pair of extension members arranged below a power plant, arranged in a forward part of a vehicle, the left-right pair of extension members each extending in a vehicle front-rear direction and each having a rear end portion; and a rear member connected to the rear end portions of the pair of left-right extension members, the rear member extending in a vehicle width direction. The rear member has a rearward part in which a recessed portion recessed downward is formed. The rear member has an upper face on which a steering device is to be mounted and at least a portion of a motor of the steering device is to be placed in the recessed portion.Type: GrantFiled: March 30, 2020Date of Patent: September 13, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Hayato Takahashi, Keisuke Takakuwa, Masataka Hirano
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Publication number: 20220260131Abstract: A vibration proofing device includes a bracket having an internal space, and a vibration proofing member inserted into the internal space. The internal space is open on an outer surface of the bracket. At least a pair of facing-each-other surfaces, against which the vibration proofing member is pressed, is formed in an inner surface of the bracket. A distance between the pair of the facing-each-other surfaces on a far side in an insertion direction of the vibration proofing member is the same, in at least some regions of the bracket, as that on a near side in the insertion direction. This provides the vibration proofing device and the bracket to allow for compactly configuring the device as a whole, while sufficiently securing a retaining force between the bracket and the vibration proofing member.Type: ApplicationFiled: June 3, 2020Publication date: August 18, 2022Inventors: Hirokazu Kadowaki, Masataka Hirano, Yusuke Arai
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Patent number: 10906384Abstract: A vibration prevention device includes a vehicle body-side bracket having an inner space and a vibration prevention member disposed in the inner space. A press-fitting surface and a press-fitting groove are formed on an inner surface of the vehicle body-side bracket. The press-fitting surface and the press-fitting groove extend from an edge portion of the inner space opening through an outer surface of the bracket. The vibration prevention member has a first attachment member, a second attachment member, and an insulator disposed between the first attachment member and the second attachment member. The second attachment member has an abutting portion pressed against the press-fitting surface and an attachment portion press-fitted into the press-fitting groove.Type: GrantFiled: April 23, 2019Date of Patent: February 2, 2021Assignees: YAMASHITA RUBBER CO., LTD., HONDA MOTOR CO., LTD.Inventors: Hirokazu Kadowaki, Masataka Hirano, Yusuke Arai
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Patent number: 10808835Abstract: A shift control device of a vehicle including an internal combustion engine and a multi-speed transmission in series, the shift control device comprises: a control portion providing a downshift control in which an input shaft rotation speed of the multi-speed transmission is increased through a torque-up of the internal combustion engine toward a post-shift input shaft rotation speed in a neutral state where a release-side engagement device to be released during a downshift of the multi-speed transmission is released, so as to engage an engagement-side engagement device to be engaged after the shift. In the case of a shift pattern having a large internal inertia of the multi-speed transmission, the control portion controls a torque capacity of the engagement-side engagement device to a value greater than zero before starting a torque-up control of the internal combustion engine.Type: GrantFiled: March 1, 2018Date of Patent: October 20, 2020Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Norihiro Tsukamoto, Tomohiro Asami, Hiromasa Takai, Masataka Hirano, Daiki Fukuda, Takuma Sugino
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Publication number: 20200307697Abstract: A subframe structure includes: a left-right pair of extension members arranged below a power plant, arranged in a forward part of a vehicle, the left-right pair of extension members each extending in a vehicle front-rear direction and each having a rear end portion; and a rear member connected to the rear end portions of the pair of left-right extension members, the rear member extending in a vehicle width direction. The rear member has a rearward part in which a recessed portion recessed downward is formed. The rear member has an upper face on which a steering device is to be mounted and at least a portion of a motor of the steering device is to be placed in the recessed portion.Type: ApplicationFiled: March 30, 2020Publication date: October 1, 2020Inventors: Hayato TAKAHASHI, Keisuke TAKAKUWA, Masataka HIRANO
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Publication number: 20190329640Abstract: A vibration prevention device i ncludes a vehicle body-side bracket having an inner space and a vibration prevention member disposed in the inner space. A press-fitting surface and a press-fitting groove are formed on an inner surface of the vehicle body side bracket. The press-fitting surface and the press-fitting groove extend from an edge portion of the inner space opening through an outer surface of the bracket, The vibration prevention member has a first attachment member, a second attachment member, and an insulator disposed between the first attachment member and the second attachment member. The second attachment member has an abutting portion pressed against the press-fitting surface and an attachment portion press-fitted into the press-fitting groove.Type: ApplicationFiled: April 23, 2019Publication date: October 31, 2019Inventors: Hirokazu Kadowaki, Masataka Hirano, Yusuke Arai
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Patent number: 10161510Abstract: When there is a request for a skip downshift that transitionally establishes an intermediate speed position, a surge hydraulic pressure at the start of a torque phase during shift control toward the intermediate speed position is set so as to be lower than a surge hydraulic pressure at the start of a torque phase during shift control toward a required speed position.Type: GrantFiled: July 21, 2017Date of Patent: December 25, 2018Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Keisuke Ota, Norihiro Tsukamoto, Tomohiro Chimbe, Ayumu Sagawa, Hiromasa Takai, Masataka Hirano
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Publication number: 20180252311Abstract: A shift control device of a vehicle including an internal combustion engine and a multi-speed transmission in series, the shift control device comprises: a control portion providing a downshift control in which an input shaft rotation speed of the multi-speed transmission is increased through a torque-up of the internal combustion engine toward a post-shift input shaft rotation speed in a neutral state where a release-side engagement device to be released during a downshift of the multi-speed transmission is released, so as to engage an engagement-side engagement device to be engaged after the shift. In the case of a shift pattern having a large internal inertia of the multi-speed transmission, the control portion controls a torque capacity of the engagement-side engagement device to a value greater than zero before starting a torque-up control of the internal combustion engine.Type: ApplicationFiled: March 1, 2018Publication date: September 6, 2018Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Norihiro TSUKAMOTO, Tomohiro ASAMI, Hiromasa TAKAI, Masataka HIRANO, Daiki FUKUDA, Takuma SUGINO
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Publication number: 20180031122Abstract: When there is a request for a skip downshift that transitionally establishes an intermediate speed position, a surge hydraulic pressure at the start of a torque phase during shift control toward the intermediate speed position is set so as to be lower than a surge hydraulic pressure at the start of a torque phase during shift control toward a required speed position.Type: ApplicationFiled: July 21, 2017Publication date: February 1, 2018Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Keisuke OTA, Norihiro TSUKAMOTO, Tomohiro CHIMBE, Ayumu SAGAWA, Hiromasa TAKAI, Masataka HIRANO
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Patent number: 9776662Abstract: A sub-frame structure includes right and left side members extending in a vehicle front-rear direction, and a rear cross member extending in a vehicle width direction. The sub-frame structure is configured to support a vehicle power plant such as an engine through antivibration devices, and to be supported by a vehicle body frame. The right and left side members are rigidly fixed to a vehicle body frame through bolts. A first antivibration device is mounted on a front cross beam. First bushes and second bushes are provided in order to support the front cross beam in a floating manner relative to the right and left side members.Type: GrantFiled: December 25, 2014Date of Patent: October 3, 2017Assignee: Honda Motor Co., Ltd.Inventors: Masataka Hirano, Tetsuya Miyahara
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Patent number: 9623909Abstract: A subframe structure includes an attachment bracket that is disposed between the second vibration-isolation device and rear cross member and that attach the second vibration-isolation device to the rear cross member, and four elastic bushings that floatably support the attachment bracket as to the rear cross member at four support points. A load input point where a load is input from an engine to the second vibration-isolation device is positioned within a region surrounded by the four support points in planar view.Type: GrantFiled: November 16, 2015Date of Patent: April 18, 2017Assignee: HONDA MOTOR CO., LTD.Inventors: Masataka Hirano, Tetsuya Miyahara
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Patent number: 9610979Abstract: A subframe structure being supported by a vehicle-body frame and supporting a vehicular power plant through a damping device. The subframe structure includes: a longitudinal member which extends in a front-rear direction of a vehicle and is rigidly fixed to the vehicle-body frame; a lateral member which extends in a vehicle width direction and on which at least one of the damping devices is mounted; a floating mechanism which floatingly supports the lateral member on the longitudinal member through an elastic mechanism; and a suspension arm connected to the longitudinal member.Type: GrantFiled: August 6, 2015Date of Patent: April 4, 2017Assignee: Honda Motor Co., Ltd.Inventors: Masataka Hirano, Tetsuya Miyahara, Masahiro Terada, Shungo Fueki, Go Fujikawa, Gen Yoshida
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Publication number: 20170036698Abstract: A sub-frame structure includes right and left side members extending in a vehicle front-rear direction, and a rear cross member extending in a vehicle width direction. The sub-frame structure is configured to support a vehicle power plant such as an engine through antivibration devices, and to be supported by a vehicle body frame. The right and left side members are rigidly fixed to a vehicle body frame through bolts. A first antivibration device is mounted on a front cross beam. First bushes and second bushes are provided in order to support the front cross beam in a floating manner relative to the right and left side members.Type: ApplicationFiled: December 25, 2014Publication date: February 9, 2017Inventors: Masataka HIRANO, Tetsuya MIYAHARA
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Publication number: 20160039464Abstract: A subframe structure being supported by a vehicle-body frame and supporting a vehicular power plant through a damping device. The subframe structure includes: a longitudinal member which extends in a front-rear direction of a vehicle and is rigidly fixed to the vehicle-body frame; a lateral member which extends in a vehicle width direction and on which at least one of the damping devices is mounted; a floating mechanism which floatingly supports the lateral member on the longitudinal member through an elastic mechanism; and a suspension arm connected to the longitudinal member.Type: ApplicationFiled: August 6, 2015Publication date: February 11, 2016Inventors: Masataka HIRANO, Tetsuya Miyahara, Masahiro TERADA, Shungo FUEKI, Go FUJIKAWA, Gen YOSHIDA
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Patent number: 8882090Abstract: A fluid-filled type vibration damping device including a partition member having a housing space, and a movable plate housed within the housing space so that displacement thereof is limited by abutment against inside wall faces of the housing space. Abutted sloping faces are defined by outside peripheral portions of the inside wall faces of the housing space situated in opposition in an axial direction while sloping axially outside going towards an inner peripheral side. An outside peripheral abutting portion formed of a rubber elastic body is provided to an outside peripheral portion of the movable plate, and abutting sloping faces are defined by opposite faces of the outside peripheral abutting portion that slope axially outside going towards the inner peripheral side. The abutted sloping faces and the abutting sloping faces have different slope angles so as to slope relative to each other.Type: GrantFiled: December 7, 2012Date of Patent: November 11, 2014Assignees: Tokai Rubber Industries, Ltd., Honda Motor Co., Ltd.Inventors: Naoki Nishi, Mutsuki Nawaji, Masataka Hirano, Daisuke Fukunaga