Patents Assigned to KYB-YS Co., Ltd.
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Publication number: 20230366423Abstract: A coupling structure for coupling a first member and a second member includes a rod-shaped part configured to be received across a first hole formed in the first member and a second hole formed in the second member. The rod-shaped part has a first insertion portion configured to be inserted into the first hole of the first member, and a second insertion portion configured to be inserted into the second hole of the second member. The coupling structure further includes a fixing configuration, the fixing configuration being configured to fix the first insertion portion and the first member by applying an external force to the first insertion portion, and the fixing configuration being configured to fix the second insertion portion and the second member by applying an external force to the second insertion portion.Type: ApplicationFiled: October 1, 2021Publication date: November 16, 2023Applicants: The Ritsumeikan Trust, KYB-YS CO., LTD.Inventors: Shunichi SUGIMOTO, Sang-Ho HYON, Yasushi SAITOU, Sadayuki KAMIKURA
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Publication number: 20230339101Abstract: A module robot includes a first link, a second link movably linked to the first link, and a fluid pressure cylinder configured to move the first link and the second link relative to each other, wherein the first link has a cylinder block in which a cylinder chamber of the fluid pressure cylinder is formed.Type: ApplicationFiled: October 1, 2021Publication date: October 26, 2023Applicants: The Ritsumeikan Trust, KYB-YS CO., LTD.Inventors: Shunichi SUGIMOTO, Sang-Ho HYON, Yasushi SAITOU, Sadayuki KAMIKURA, Yuji FUKUZAWA
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Patent number: 11534852Abstract: A manufacturing method for manufacturing a cylinder tube includes a joining step of joining a tube main body and a head member by friction welding by abutting an end surface of the tube main body and a flange portion of the head member in a state in which a through hole of the tube main body and a projecting portion of the head member are fitted to each other so as to form a predetermined clearance. In the joining step, a non-contact portion of the flange portion of the head member facing the clearance is joined to the tube main body by heating the non-contact portion with friction heat generated by relative rotation between the tube main body and the head member.Type: GrantFiled: March 14, 2018Date of Patent: December 27, 2022Assignee: KYB-YS CO., LTD.Inventor: Yasuyuki Nagai
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Publication number: 20220241959Abstract: A module robot 100 is configured by coupling a plurality of modules 101, the modules 101 each having a first link 1, a second link 2 movably linked to the first link 1 relatively, and a hydraulic cylinder 3 configured to move the first link 1 and the second link 2 relatively.Type: ApplicationFiled: June 29, 2020Publication date: August 4, 2022Applicants: KYB-YS CO., LTD., The Ritsumeikan TrustInventors: Shunichi SUGIMOTO, Sang-Ho HYON, Yasushi SAITOU, Sadayuki KAMIKURA, Nobuyuki KOBAYASHI, Shinichi NISHIZAWA, Setsuko UCHIDA
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Publication number: 20210346978Abstract: A manufacturing method includes a joining step of abutting and joining an end surface of a tube main body and a projecting portion of a head member by frictional welding in a state in which a through hole of the tube main body and the projecting portion of the head member are fitted with a fitting clearance. In the joining step, flow material which is practically flowed from an end surface of the tube main body and the flange portion of the head member is filled in the fitting clearance from the root side until the tip portion is located within the range in the direction of the rotation axis, thereby joining between a non-contact portion and the tube main body and between an inclined inner peripheral surface of the tube main body and an outer peripheral surface of the projecting portion by the flow material.Type: ApplicationFiled: September 17, 2019Publication date: November 11, 2021Applicant: KYB-YS CO., LTD.Inventor: Yasuyuki NAGAI
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Patent number: 10907662Abstract: A bonded body formed by frictional pressure-contact, includes: a first member including an end surface and a hollow portion with an opening in the end surface; and a second member including a body portion bonded to the end surface and a protrusion portion protruding from the body portion, the protrusion portion being accommodated in the hollow portion, wherein at least one of an inner peripheral surface of the hollow portion and an outer peripheral surface of the protrusion portion includes an inclined portion inclined to a radial direction of the opening, while the other is in contact with the inclined portion.Type: GrantFiled: September 21, 2016Date of Patent: February 2, 2021Assignee: KYB-YS CO., LTD.Inventors: Nobuyuki Kobayashi, Yasuyuki Nagai, Shinji Satou
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Publication number: 20200114464Abstract: A manufacturing method for manufacturing a cylinder tube includes a joining step of joining a tube main body and a head member by friction welding by abutting an end surface of the tube main body and a flange portion of the head member in a state in which a through hole of the tube main body and a projecting portion of the head member are fitted to each other so as to form a predetermined clearance. In the joining step, a non-contact portion of the flange portion of the head member facing the clearance is joined to the tube main body by heating the non-contact portion with friction heat generated by relative rotation between the tube main body and the head member.Type: ApplicationFiled: March 14, 2018Publication date: April 16, 2020Applicant: KYB-YS CO., LTD.Inventor: Yasuyuki NAGAI
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Patent number: 10451093Abstract: A fluid pressure cylinder includes a cushion bearing provided movably on an outer periphery of the piston rod; a flange portion provided on the piston rod by facing the piston with the cushion bearing between them; and a collar provided movably in a radial direction on the outer periphery of the piston rod between the cushion bearing and the flange portion. End surfaces of the cushion bearing and the collar are inclined symmetrically to a center axis of the piston rod, and end surfaces of the flange portion and the collar are formed having plane shapes crossing the center axis.Type: GrantFiled: September 21, 2016Date of Patent: October 22, 2019Assignee: KYB-YS CO., LTD.Inventors: Nobuyuki Kobayashi, Tatsuya Hirai, Shinji Satou
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Patent number: 10415710Abstract: A rotary valve that controls a flow rate at which working oil is supplied to and discharged from a hydraulic cylinder that causes a wing to rotate about a rotary shaft includes a rotor that rotates as the wing rotates about the rotary shaft, and a first control flow passage and a second control flow passage formed in the rotor to control the flow rate at which the working fluid is supplied to and discharged from the hydraulic cylinder, wherein the first control flow passage and the second control flow passage respectively vary a resistance exerted on a flow of the working fluid passing therethrough as the rotor rotates.Type: GrantFiled: November 26, 2015Date of Patent: September 17, 2019Assignee: KYB-YS Co., Ltd.Inventors: Nobuyuki Kobayashi, Keiichi Matsuzaki
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Publication number: 20190021497Abstract: Providing an overturn preventing device which can maintain a mounted state against earthquake or the like with multidirectional shaking and thereby can prevent an article from overturn. The overturn preventing device includes a damper and a pair of bases. The damper is mounted between a top surface of a piece of furniture installed on a floor and a ceiling. Both ends of the damper are respectively coupled to the bases so as to be rotatable about respective rotation axes. Furthermore, both ends of the damper are respectively coupled to the bases so as to be swingable in a direction intersecting a rotation direction. The first base abuts against the top surface of the furniture and the second base abuts against the ceiling.Type: ApplicationFiled: August 16, 2016Publication date: January 24, 2019Applicants: KYB CORPORATION, KYB-YS CO., LTD.Inventors: Shinichi SEKINE, Masakazu NAKAZATO, Atsushi TOYOUCHI, Masaya UNE, Miki IMASATO, Yukiko ISHIHARA, Takahiro SENDA
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Patent number: 10145394Abstract: A hydraulic cylinder includes a rod inner passage that is formed in a piston rod along an axial direction and communicates a fluid pressure source and an interior of a cylinder tube; a plug that is inserted from an open end that opens to the interior of the cylinder tube of the rod inner passage; a lateral hole that is formed in the piston rod along a radial direction and extends so as to cross the rod inner passage; and a pin that is inserted into the lateral hole. In the piston rod, an inner-circumference screw portion is formed on an inner circumference of the rod inner passage, and on the plug, an outer-circumference screw portion that is screwed into the inner-circumference screw portion and an engagement portion that is engaged with the pin and locks rotation of the plug are formed.Type: GrantFiled: June 6, 2014Date of Patent: December 4, 2018Assignee: KYB-YS Co., Ltd.Inventor: Nobuyuki Kobayashi
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Publication number: 20180291934Abstract: A bonded body formed by frictional pressure-contact, includes: a first member including an end surface and a hollow portion with an opening in the end surface; and a second member including a body portion bonded to the end surface and a protrusion portion protruding from the body portion, the protrusion portion being accommodated in the hollow portion, wherein at least one of an inner peripheral surface of the hollow portion and an outer peripheral surface of the protrusion portion includes an inclined portion inclined to a radial direction of the opening, while the other is in contact with the inclined portion.Type: ApplicationFiled: September 21, 2016Publication date: October 11, 2018Applicant: KYB-YS CO., LTD.Inventors: Nobuyuki KOBAYASHI, Yasuyuki NAGAI, Shinji SATOU
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Publication number: 20180274565Abstract: A fluid pressure cylinder includes a cushion bearing provided movably on an outer periphery of the piston rod; a flange portion provided on the piston rod by facing the piston with the cushion bearing between them; and a collar provided movably in a radial direction on the outer periphery of the piston rod between the cushion bearing and the flange portion. End surfaces of the cushion bearing and the collar are inclined symmetrically to a center axis of the piston rod, and end surfaces of the flange portion and the collar are formed having plane shapes crossing the center axis.Type: ApplicationFiled: September 21, 2016Publication date: September 27, 2018Applicant: KYB-YS CO., LTD.Inventors: Nobuyuki KOBAYASHI, Tatsuya HIRAI, Shinji SATOU
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Publication number: 20180266572Abstract: A rotary valve that controls a flow rate at which working oil is supplied to and discharged from a hydraulic cylinder that causes a wing to rotate about a rotary shaft includes a rotor that rotates as the wing rotates about the rotary shaft, and a first control flow passage and a second control flow passage formed in the rotor to control the flow rate at which the working fluid is supplied to and discharged from the hydraulic cylinder, wherein the first control flow passage and the second control flow passage respectively vary a resistance exerted on a flow of the working fluid passing therethrough as the rotor rotates.Type: ApplicationFiled: November 26, 2015Publication date: September 20, 2018Applicant: KYB-YS CO., LTD.Inventors: Nobuyuki KOBAYASHI, Keiichi MATSUZAKI
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Patent number: 10054138Abstract: A device mounting structure for mounting a load maintaining mechanism on a hydraulic cylinder, a pipe for suppling and discharging working oil to and from the hydraulic cylinder being connected to the load maintaining mechanism such that the working oil is led thereto, includes a single coupling portion that includes a screw hole and is provided on the hydraulic cylinder, and a bracket to which the load maintaining mechanism is fixed, the bracket being coupled to the coupling portion via a first screw member that is screwed into the screw hole, wherein the bracket includes a first through hole through which the first screw member is passed so as to leave a gap in a radial direction.Type: GrantFiled: October 28, 2015Date of Patent: August 21, 2018Assignee: KYB-YS Co., Ltd.Inventors: Nobuyuki Kobayashi, Shinji Satou
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Patent number: 9874232Abstract: A fluid pressure control apparatus includes a pilot control valve configured to control a pilot pressure guided from a pilot pump to the control valve and a load retaining mechanism installed in the main passage. The load retaining mechanism includes an operated check valve configured to permit a flow of the working fluid from the load-side pressure chamber to the control valve in accordance with a back pressure and a switch valve configured to switch an action of the operated check valve. The switch valve has a discharge position configured to discharge the working fluid in a back pressure chamber when the pilot pressure has been guided from the pilot control valve. When the switch valve is set to the discharge position, the working fluid in the back pressure chamber is discharged to a tank via a drain port of the pilot control valve.Type: GrantFiled: August 26, 2014Date of Patent: January 23, 2018Assignees: KYB Corporation, KYB-YS Co., Ltd.Inventors: Keiichi Matsuzaki, Hideki Miyashita
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Patent number: 9873165Abstract: A piston rod manufacturing method of manufacturing a piston rod by joining a solid rod main body and a solid rod head includes a first step of joining respective end surfaces of the rod main body and the rod head by friction welding; and a second step of performing boring process on an axial center portion from the rod head side so as to penetrate through a joining face between the rod main body and the rod head.Type: GrantFiled: August 11, 2014Date of Patent: January 23, 2018Assignee: KYB-YS Co., Ltd.Inventor: Nobuyuki Kobayashi
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Publication number: 20170321730Abstract: A device mounting structure for mounting a load maintaining mechanism on a hydraulic cylinder, a pipe for suppling and discharging working oil to and from the hydraulic cylinder being connected to the load maintaining mechanism such that the working oil is led thereto, includes a single coupling portion that includes a screw hole and is provided on the hydraulic cylinder, and a bracket to which the load maintaining mechanism is fixed, the bracket being coupled to the coupling portion via a first screw member that is screwed into the screw hole, wherein the bracket includes a first through hole through which the first screw member is passed so as to leave a gap in a radial direction.Type: ApplicationFiled: October 28, 2015Publication date: November 9, 2017Applicant: KYB-YS CO., LTD.Inventors: Nobuyuki KOBAYASHI, Shinji SATOU
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Patent number: 9581242Abstract: A fluid pressure cylinder includes a cylinder tube, a piston and a solid piston rod. The piston rod includes a head-side passage defined by a head-side shaft hole extending in an axial direction, a head-side outer hole open on a part projecting from the cylinder tube and a head-side inner hole open to a head-side chamber and allowing communication between a head-side chamber and a fluid pressure source, and a bottom-side passage allowing communication between a bottom-side chamber and the fluid pressure source. The head-side shaft hole includes an opening end and a tip formed inside the piston rod. The opening end of the head-side shaft hole is sealed by a sealing member.Type: GrantFiled: October 10, 2012Date of Patent: February 28, 2017Assignee: KYB-YS CO., LTD.Inventors: Nobuyuki Kobayashi, Sadayuki Kamikura
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Publication number: 20160281749Abstract: A fluid pressure cylinder extends and contracts in accordance with supply/discharge of fluid pressure to/from a cylinder tube is provided. On inner side of both end portions of the cylinder tube in an axial direction, at least one small-diameter portion having a diameter smaller than those of the end portions in the axial direction is formed by a spinning process.Type: ApplicationFiled: December 2, 2013Publication date: September 29, 2016Applicants: KAYABA INDUSTRY CO., LTD., KYB-YS CO., LTD.Inventors: Nobuyuki KOBAYASHI, Sadayuki KAMIKURA, Yasuyuki NAGAI