Patents by Inventor Kouji Sakai
Kouji Sakai 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: 10967841Abstract: A brake fluid pressure control system for a vehicle is provided with: a master cylinder activated by the operation of a brake pedal; a motor cylinder device that generates brake hydraulic pressure in response to an operation amount of the brake pedal; first brake fluid flow lines that allow the master cylinder to communicate with wheel cylinders; two-position three-way valves arranged at connection points between the first brake fluid lines and second brake fluid lines. The two-position three-way valves switch between a state in which the master cylinder communicates with the wheel cylinder and a state in which the motor cylinder device communicates with the wheel cylinder.Type: GrantFiled: September 25, 2014Date of Patent: April 6, 2021Assignee: Autoliv Nissin Brake Systems Japan Co., Ltd.Inventors: Takaaki Komaba, Hiroaki Tokoi, Kouji Sakai
-
Patent number: 10442417Abstract: One embodiment provides a hydraulic pressure generation apparatus. In the hydraulic pressure generation apparatus, a motor attached to a base body. The base body includes: a first cylinder hole having a closed bottom in which a first piston is inserted to thereby form a master cylinder; and a second cylinder hole having a closed bottom in which a second piston is inserted to thereby form a slave cylinder. The first cylinder hole and the second cylinder hole have respective openings in a surface of the base body located on one side thereof. Axial lines of the first cylinder hole, the second cylinder hole and an output shaft of the motor are arranged approximately parallel with each other.Type: GrantFiled: December 22, 2016Date of Patent: October 15, 2019Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.Inventors: Yoshiteru Matsunaga, Kouji Sakai, Nobuyuki Kobayashi
-
Patent number: 10104811Abstract: One embodiment relates to a vehicle control unit. The vehicle control unit includes a metallic base body and an electronic control unit which is attached to the base body. The electronic control unit includes a housing which is attached to an attaching surface of the base body and a control circuit board which is housed in the housing. A heat radiation portion is provided on the attaching surface so as to be inserted into the housing. The heat radiation portion is brought into abutment with the control circuit board via a heat conducting member. And, a heat conducting member holding portion is formed in the housing so as to hold the heat conducting member with respect to the heat radiation portion.Type: GrantFiled: March 4, 2016Date of Patent: October 16, 2018Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.Inventors: Yusuke Koga, Sekihei Shimozono, Kouji Sakai, Fumiya Ohki, Naoki Tomita
-
Patent number: 9899983Abstract: One embodiment provides an electronic control unit. The electronic control unit includes a housing and a noise filter. The housing includes an accommodating portion, and the accommodating portion includes a support portion. The noise filter includes an engaging portion, and at least part of the noise filter is housed in the accommodating portion of the housing. When the at least part of the noise filter is housed in the accommodating portion of the housing, the engaging portion is in engagement with the support portion.Type: GrantFiled: December 15, 2015Date of Patent: February 20, 2018Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.Inventors: Motoyasu Nakamura, Tetsuo Kobori, Sotaro Kanai, Sekihei Shimozono, Kouji Sakai
-
Publication number: 20170182992Abstract: One embodiment provides a hydraulic pressure generation apparatus. In the hydraulic pressure generation apparatus, a motor attached to a base body. The base body includes: a first cylinder hole having a closed bottom in which a first piston is inserted to thereby form a master cylinder; and a second cylinder hole having a closed bottom in which a second piston is inserted to thereby form a slave cylinder. The first cylinder hole and the second cylinder hole have respective openings in a surface of the base body located on one side thereof. Axial lines of the first cylinder hole, the second cylinder hole and an output shaft of the motor are arranged approximately parallel with each other.Type: ApplicationFiled: December 22, 2016Publication date: June 29, 2017Inventors: Yoshiteru MATSUNAGA, Kouji SAKAI, Nobuyuki KOBAYASHI
-
Patent number: 9692641Abstract: A first electronic device stores first configuration information of the first electronic device collected by a tamper-resistant chip on the first electronic device and approved by a third-party device in the portable medium. A second electronic device stores second configuration information of the second electronic device collected by a tamper-resistant chip on the second electronic device and approved by the third-party device in the portable medium and acquires the first configuration information from the portable medium. The first electronic device transmits the first configuration information of the first electronic device and the second configuration information of the second electronic device acquired from the portable medium to the second electronic device over a long-distance network.Type: GrantFiled: August 14, 2013Date of Patent: June 27, 2017Assignees: FUJITSU FSAS INC., FUJITSU LIMITEDInventors: Kouji Sakai, Seigo Kotani
-
Patent number: 9660863Abstract: A first electronic device transmits first configuration information of the first electronic device collected by a tamper-resistant chip mounted thereon and approved by a third-party device to a second electronic device over a short-distance network. The second electronic device transmits second configuration information of the second electronic device collected by a tamper-resistant chip mounted thereon and approved by the third-party device to the first electronic device over the short-distance network. The first electronic device transmits the first configuration information and the second configuration information to the second electronic device over a network. The second electronic device controls connection between the first electronic device and the second electronic device over the network based on the first configuration information and the second configuration information received from the first electronic device.Type: GrantFiled: August 7, 2013Date of Patent: May 23, 2017Assignees: FUJITSU FSAS INC., FUJITSU LIMITEDInventors: Kouji Sakai, Seigo Kotani
-
Patent number: 9631685Abstract: An electric actuator includes a shaft member, a nut member, a power transmission member, and a guide portion. A spiral groove is formed on an outer circumference of the shaft member. The nut member is fitted onto the shaft member. A power transmission member is disposed between an inner circumference of the nut member and the groove. The guide portion is configured to guide linear motion of the shaft member. Rotation of the nut member about the shaft member by means of a rotational driving force of an electric motor results in the linear motion of the shaft member. The guide portion includes a rotating mechanism portion configured to rotate the shaft member about an axis when the shaft member is in the linear motion.Type: GrantFiled: November 19, 2014Date of Patent: April 25, 2017Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.Inventors: Kouji Sakai, Nobuyuki Kobayashi
-
Publication number: 20170021895Abstract: During control ON of a brake control device, an ECU acquires a front wheel target braking force and a rear wheel target braking force from operation amount-front/rear wheel target braking force characteristics stored in a storage based on a master cylinder pressure detected by a master pressure sensor, and controls an oil pressure unit such that oil pressures corresponding to the acquired front wheel target braking force and rear wheel target braking force are respectively supplied to a front wheel brake and a rear wheel brake. During control OFF of the brake control device, oil pressures generated by a tandem master cylinder are directly supplied to the front wheel brake and the rear wheel brake. Hydraulic pressure control is performed such that operation amount-both wheels target braking force characteristics in a control ON state is equal to operation amount-both wheels target braking characteristics during a control OFF state.Type: ApplicationFiled: October 9, 2014Publication date: January 26, 2017Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Risa YASUKAWA, Takaaki MIZUTANI, Masaya NISHIMURA, Kouji SAKAI
-
Patent number: 9527485Abstract: One embodiment provides a brake system input apparatus into which a brake operation performed by an operating person is inputted, including: a base body; a master cylinder that is provided in the base body and that generates a brake hydraulic pressure by a piston, the piston being connected to a brake operator; a stroke sensor unit that is attached to the base body on a side of the master cylinder and that has a detection element, the detection element being configured to detect a sliding stroke of the piston; and a control circuit board that is provided on a side of the base body, wherein the stroke sensor unit has a connection terminal portion that is connected to a connection terminal of the control circuit board, and wherein the connection terminal portion is disposed so as to face the control circuit board.Type: GrantFiled: December 4, 2014Date of Patent: December 27, 2016Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.Inventors: Motoyasu Nakamura, Toshiya Shimozaki, Nobuyuki Kobayashi, Kouji Sakai
-
Patent number: 9457784Abstract: One embodiment of the present invention provides a brake hydraulic pressure generating device, including: a master cylinder, a stroke simulator and an on/off valve. The on/off valve opens/closes a branch hydraulic pressure passage, which branches from a main hydraulic pressure passage. The on/off valve includes a first valve mechanism including a first valve portion and a first valve seat, and a second valve mechanism including a second valve portion and a second valve seat. The first valve seat is formed in the second valve portion. A pressure receiving area in which brake hydraulic pressure acting from the stroke simulator side is received is set to be higher in the second valve portion than in the first valve portion.Type: GrantFiled: March 16, 2015Date of Patent: October 4, 2016Assignee: AUTOLIV NISSIN BRAKE SYSTEMS JAPAN CO., LTD.Inventors: Hiroaki Tokoi, Kouji Sakai
-
Publication number: 20160278245Abstract: One embodiment relates to a vehicle control unit. The vehicle control unit includes a metallic base body and an electronic control unit which is attached to the base body. The electronic control unit includes a housing which is attached to an attaching surface of the base body and a control circuit board which is housed in the housing. A heat radiation portion is provided on the attaching surface so as to be inserted into the housing. The heat radiation portion is brought into abutment with the control circuit board via a heat conducting member. And, a heat conducting member holding portion is formed in the housing so as to hold the heat conducting member with respect to the heat radiation portion.Type: ApplicationFiled: March 4, 2016Publication date: September 22, 2016Inventors: Yusuke KOGA, Sekihei SHIMOZONO, Kouji SAKAI, Fumiya OHKI, Naoki TOMITA
-
Publication number: 20160207512Abstract: A brake fluid pressure control system for a vehicle is provided with: a master cylinder activated by the operation of a brake pedal; a motor cylinder device that generates brake hydraulic pressure in response to an operation amount of the brake pedal; first brake fluid flow lines that allow the master cylinder to communicate with wheel cylinders; two-position three-way valves arranged at connection points between the first brake fluid lines and second brake fluid lines. The two-position three-way valves switch between a state in which the master cylinder communicates with the wheel cylinder and a state in which the motor cylinder device communicates with the wheel cylinder.Type: ApplicationFiled: September 25, 2014Publication date: July 21, 2016Applicant: NISSIN KOGYO CO., LTD.Inventors: Takaaki KOMABA, Hiroaki TOKOI, Kouji SAKAI
-
Publication number: 20160182002Abstract: One embodiment provides an electronic control unit. The electronic control unit includes a housing and a noise filter. The housing includes an accommodating portion, and the accommodating portion includes a support portion. The noise filter includes an engaging portion, and at least part of the noise filter is housed in the accommodating portion of the housing. When the at least part of the noise filter is housed in the accommodating portion of the housing, the engaging portion is in engagement with the support portion.Type: ApplicationFiled: December 15, 2015Publication date: June 23, 2016Inventors: Motoyasu NAKAMURA, Tetsuo KOBORI, Sotaro KANAI, Sekihei SHIMOZONO, Kouji SAKAI
-
Patent number: 9327697Abstract: A first slave piston and a second slave piston are disposed in tandem in series within a cylinder body, and the pistons are arranged so that part of the shaft section of the second slave piston overlaps with the inner periphery of an opening section provided in the backward side, in the displacement direction, of the first slave piston. A long hole extending along the axial direction of the second slave piston is provided in the shaft section, and a connection pin which regulates the initial position of the second slave piston is inserted into the long hole.Type: GrantFiled: March 29, 2013Date of Patent: May 3, 2016Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.Inventors: Kazuaki Murayama, Jiro Suzuki, Nobutake Hyodo, Nobuyuki Kobayashi, Kouji Sakai
-
Publication number: 20150274144Abstract: One embodiment of the present invention provides a brake hydraulic pressure generating device, including: a master cylinder, a stroke simulator and an on/off valve. The on/off valve opens/closes a branch hydraulic pressure passage, which branches from a main hydraulic pressure passage. The on/off valve includes a first valve mechanism including a first valve portion and a first valve seat, and a second valve mechanism including a second valve portion and a second valve seat. The first valve seat is formed in the second valve portion. A pressure receiving area in which brake hydraulic pressure acting from the stroke simulator side is received is set to be higher in the second valve portion than in the first valve portion.Type: ApplicationFiled: March 16, 2015Publication date: October 1, 2015Inventors: Hiroaki TOKOI, Kouji SAKAI
-
Patent number: 9132818Abstract: A fluid pressure booster for a braking device includes a control piston on which an input brake operation acts in an advancing direction, and a reaction force based on fluid pressure of a booster fluid pressure generation chamber acts in a retracting direction. A pressure increasing valve is provided between a valve chamber communicating with a fluid pressure generation source and the booster fluid pressure generation chamber. A pressure reducing valve is provided between a release chamber communicating with a reservoir and the booster fluid pressure generation chamber. At least one contraction portion is formed between an outer periphery of a front portion of the pressing rod and an inner periphery of a front portion of a valve seat member.Type: GrantFiled: December 14, 2011Date of Patent: September 15, 2015Assignees: NISSIN KOGYO CO., LTD, HONDA MOTOR CO., LTD.Inventors: Risa Hirano, Kouji Sakai, Kenji Suzuki
-
Publication number: 20150204401Abstract: An electric actuator includes a shaft member, a nut member, a power transmission member, and a guide portion. A spiral groove is formed on an outer circumference of the shaft member. The nut member is fitted onto the shaft member. A power transmission member is disposed between an inner circumference of the nut member and the groove. The guide portion is configured to guide linear motion of the shaft member. Rotation of the nut member about the shaft member by means of a rotational driving force of an electric motor results in the linear motion of the shaft member. The guide portion includes a rotating mechanism portion configured to rotate the shaft member about an axis when the shaft member is in the linear motion.Type: ApplicationFiled: November 19, 2014Publication date: July 23, 2015Inventors: Kouji SAKAI, Nobuyuki KOBAYASHI
-
Publication number: 20150158466Abstract: One embodiment provides a brake system input apparatus into which a brake operation performed by an operating person k inputted, including: a base body; a master cylinder that is provided in the base body and that generates a brake hydraulic pressure by a piston, the piston being connected to a brake operator; a stroke sensor unit that is attached to the base body on a side of the master cylinder and that has a detection element, the detection element being configured to detect a sliding stroke of the piston; and a control circuit board that is provided on a side of the base body, wherein the stroke sensor unit has a connection terminal portion that is connected to a connection terminal of the control circuit board, and wherein the connection terminal portion is disposed so as to face the control circuit board.Type: ApplicationFiled: December 4, 2014Publication date: June 11, 2015Inventors: Motoyasu NAKAMURA, Toshiya SHIMOZAKI, Nobuyuki KOBAYASHI, Kouji SAKAI
-
Publication number: 20150061364Abstract: A first slave piston and a second slave piston are disposed in tandem in series within a cylinder body, and the pistons are arranged so that part of the shaft section of the second slave piston overlaps with the inner periphery of an opening section provided in the backward side, in the displacement direction, of the first slave piston. A long hole extending along the axial direction of the second slave piston is provided in the shaft section, and a connection pin which regulates the initial position of the second slave piston is inserted into the long hole.Type: ApplicationFiled: March 29, 2013Publication date: March 5, 2015Inventors: Kazuaki Murayama, Jiro Suzuki, Nobutake Hyodo, Nobuyuki Kobayashi, Kouji Sakai