Patents Assigned to Keihin Corporation
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Patent number: 9562483Abstract: In an engine intake control apparatus, a cover is made of synthetic resin, a motor support plate is made of metal, a positioning boss is integrally formed on the cover, a first positioning hole arranged on a motor support plate is fitted on an outer peripheral surface of the positioning boss, and the positioning boss is positioned and fitted with a throttle valve body each other. With such an engine intake control apparatus, it is possible to perform with high accuracy the mutual positioning between the three components, i.e. the motor support plate, the cover and the throttle valve body, and it is possible to effectively improve the opening and closing accuracy for the opening and closing of the throttle valve by the motor.Type: GrantFiled: March 12, 2014Date of Patent: February 7, 2017Assignee: KEIHIN CORPORATIONInventors: Yoshikuni Shishido, Masako Hagiya, Yu Kumagai, Yasushi Ono
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Patent number: 9559509Abstract: A power supply control device includes: a control board that is configured to control a voltage of a battery module; and a bus bar module that is configured to electrically connect the control board and the battery module, the control board and the bus bar module are arranged in a stacked manner, and connection terminals of the bus bar module which are connected to the battery module are exposed when viewed from the control board.Type: GrantFiled: October 4, 2012Date of Patent: January 31, 2017Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takeshi Nakamura, Daiki Kudo, Masashi Ueda, Kosuke Tachikawa, Tetsuya Hasebe
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Publication number: 20170014900Abstract: A squeeze pin circuit is installed to a direction switching valve. The direction switching valve is configured to switch a direction of hydraulic pressure to a core cylinder. The squeeze pin circuit is configured to drive a squeeze pin. The squeeze pin is configured to partially pressurize molten metal filled in a cavity. The squeeze pin circuit includes a squeeze pin cylinder and a flow rate adjusting unit. The squeeze pin cylinder is coupled to the direction switching valve to drive the squeeze pin. The flow rate adjusting unit is installed on a hydraulic pressure path. The hydraulic pressure path couples the direction switching valve to a head side of the squeeze pin cylinder. The flow rate adjusting unit is configured to ensure pressure compensation and temperature compensation.Type: ApplicationFiled: March 30, 2015Publication date: January 19, 2017Applicant: KEIHIN CORPORATIONInventors: Norihiro IWAMOTO, Fumihiro SAKUMA, Tetsuya UEHARA
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Patent number: 9547569Abstract: To provide a vehicle electronic control unit including a first microcomputer (2, 3) and a second microcomputer (3, 2) capable of transmitting and receiving signals to and from the first microcomputer. One of the first microcomputer and the second microcomputer outputs a PWM signal to the other microcomputer (3, 2). The other microcomputer detects an on-time of the PWM signal, performs a self diagnosis according to the detected on-time, and outputs a self diagnosis result to the one microcomputer. The one microcomputer diagnoses the other microcomputer based on the self diagnosis result.Type: GrantFiled: September 14, 2010Date of Patent: January 17, 2017Assignee: KEIHIN CORPORATIONInventor: Yusuke Ikegami
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Patent number: 9546627Abstract: In a support structure of a direct fuel injection valve capable of supporting a fuel injection valve stably for a long period of time, a valve housing is made of a metal and is provided with a first load bearing portion which is to be supported by an engine in an axial direction of the valve housing, a rear end portion of the fixed core is provided with a second load bearing portion which is to be supported by a resilient holding member in the axial direction, and the first and second load bearing portions are held between the engine and the resilient holding members with a forward set load applied to the resilient holding member by a fuel distribution pipe fitted to a fuel inlet tube and fixed to the engine.Type: GrantFiled: October 18, 2013Date of Patent: January 17, 2017Assignee: Keihin CorporationInventors: Atsushi Okamoto, Atsushi Kamahora, Junichi Miyashita, Noriaki Sumisya
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Patent number: 9533578Abstract: An electronic control unit includes a processor performing a process necessary for a charging control based on a pilot signal, an input circuit disposed in a stage preceding an input port of the processor, and a pseudo-signal supply circuit supplying a pseudo-pilot signal to a pilot signal line under the control of the processor, and the processor performs a malfunction diagnosis for the input circuit based on a signal state of the input port when controlling the pseudo-signal supply circuit to supply the pseudo-pilot signal to the pilot signal line.Type: GrantFiled: October 18, 2012Date of Patent: January 3, 2017Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.Inventors: Yuzuru Takashima, Masaki Tanno, Takeshi Yamada, Haruki Umeya, Shinichi Daibo
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Patent number: 9532470Abstract: A resin casing includes a resin case and a resin cover attached to the resin case. A plurality of depressions is formed respectively on an outer surface and an inner surface of a top plate of the resin cover. The depressions are alternately arranged on the outer surface and the inner surface along a predetermined direction as seen in a plan view.Type: GrantFiled: March 24, 2014Date of Patent: December 27, 2016Assignee: KEIHIN CORPORATIONInventor: Hirokazu Yamana
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Patent number: 9506438Abstract: In a fuel injection valve support structure, a pair of contact surfaces are formed on an intermediate portion of the valve so as to be opposite to each other with a plane therebetween, the plane including a center axis of the valve and a center line of a coupler, the elastic support member includes a base plate placed on a second load receiving portion, an elastic piece extending from the base plate, coming into pressure contact with a fuel supply cap elastically, and biasing the valve against an engine by a reaction force resulting from the contact, and a pair of rotation locking pieces extending from the base plate and coming into contact with the respective contact surfaces to restrict rotation of the valve about the axis, and at least one of the contact surfaces has a positioning groove for elastically engaging corresponding one of the rotation locking pieces.Type: GrantFiled: November 1, 2013Date of Patent: November 29, 2016Assignee: Keihin CorporationInventors: Yutaka Inomata, Atsushi Kamahora, Yuzuru Sasaki, Takahiro Yasuda
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Publication number: 20160339513Abstract: The present invention relates to a casting die device and a casting method used to obtain a cast product in which an inner bore, at least one end of which is open, is formed. The casting die device has a core pin for forming the inner bore in the cast product, and a vibration-transmitting member for transmitting vibrations from a vibrator of a micro-vibration machine to the core pin. When casting is being performed, vibrations from the vibrator are imparted to the core pin by way of the vibration-transmitting member. The vibrations also propagate to sites surrounding the core pin, in molten metal that has been poured into a cavity.Type: ApplicationFiled: November 19, 2014Publication date: November 24, 2016Applicant: KEIHIN CORPORATIONInventors: Tetsuya Uehara, Fumihiro Sakuma
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Patent number: 9494095Abstract: A fuel injection valve equipped with an in-cylinder pressure sensor is provided in which a fuel injection valve is fitted into an injection valve mounting hole provided in an engine, the fuel injection valve injecting fuel from a front end of a valve housing part into a combustion chamber of the engine, and the in-cylinder pressure sensor, which is cylindrical and has a front end facing the combustion chamber, and a cylindrical signal circuit tube fitted and connected to an inner peripheral face of a rear end of the in-cylinder pressure sensor are fitted and fixed to an outer peripheral face of the valve housing part, housed in the injection valve mounting hole, of the fuel injection valve. In such fuel injection valve, the signal transmission device connected to an in-cylinder pressure sensor does not vibrate within an injection valve mounting hole, thus enabling its durability to be ensured.Type: GrantFiled: February 15, 2013Date of Patent: November 15, 2016Assignee: Keihin CorporationInventors: Gaku Sato, Yuki Kojima, Nakaya Nakamura
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Patent number: 9494247Abstract: A solenoid section of a solenoid three-way valve includes a yoke attached to a valve housing and formed from a bottomed cylindrical main yoke and an auxiliary yoke closing an open end of the main yoke, a coil assembly inside the yoke, a fixed core slidably fitted into a hollow portion of a bobbin and abutted against a ceiling wall of the main yoke, a movable core facing the fixed core and passing through the auxiliary yoke, and a coil spring compressed between the cores. The fixed core is abutted against the wall by a predetermined spring load and by electromagnetic attraction force between the core and wall based on coil energization. A valve rod is slidably supported in a housing hole, having one end separably abutted against an outer end of the movable core and an opposite end abutted against a valve body.Type: GrantFiled: May 14, 2015Date of Patent: November 15, 2016Assignee: Keihin CorporationInventors: Naoki Oikawa, Kentarou Yamanaka
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Patent number: 9488268Abstract: A hydraulic pressure control apparatus includes a first pressure regulating valve for reducing an initial oil pressure (line pressure) of a working oil, a solenoid-operated valve for converting the oil pressure, which has been reduced in pressure, into a solenoid pressure, and a second pressure regulating valve for converting the line pressure of the working oil into an actuating pressure responsive to the solenoid pressure. The three valves share a single body. Further, an outlet passageway is formed along a thicknesswise direction of the body, with a relief valve being formed upwardly of the outlet passageway.Type: GrantFiled: May 29, 2014Date of Patent: November 8, 2016Assignees: KEIHIN CORPORATION, FUJI HEAVY INDUSTRIES LTD.Inventors: Kouichi Yamada, Keiichi Nagaseki, Kenji Suda, Tomotaka Terajima, Susumu Ito
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Patent number: 9488696Abstract: A voltage detection apparatus comprises discharge circuits constituted by switch elements and resistors connected in series, and respectively connected in parallel to each of a plurality of battery cells constituting a storage battery, filter circuits provided for the respective battery cells and removing noise contained in voltage inputted by the battery cells, and voltage detection units (D) and (M) which detect voltage of the respective battery cells in which noise is removed by the filter circuits. The voltage detection units correct detection results, based on time from when the switch elements of the discharge circuits change into an OFF state to timing for detecting voltage of the battery cells. With this voltage detection apparatus, it is possible to correct the detection error of the voltage of the battery cell due to the influence of the filter circuit, thus improving the detection accuracy of the voltage of the battery cell.Type: GrantFiled: March 7, 2014Date of Patent: November 8, 2016Assignee: KEIHIN CORPORATIONInventors: Eishin Matsumoto, Seiji Kamata, Shinichi Sato
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Patent number: 9435303Abstract: In a fuel injection valve support structure which can apply a substantially constant set load, the fuel injection valve has first and second load receiving portions, the first load receiving portion being supported on the engine, the second load receiving portion being supported on an elastic support member which receives a set load from a fuel supply cap. The elastic support member includes a base plate placed on the second load receiving portion, and an elastic piece curving rearward from one end toward the other end of the base plate, with an apex portion in pressure contact with the cap, the base plate has a portion overhanging from the second load receiving portion and supporting a tip end portion of the elastic piece. The overhang portion starts bending when a load the overhang portion receives from the cap through the elastic piece reaches or exceeds a predetermined value.Type: GrantFiled: November 1, 2013Date of Patent: September 6, 2016Assignee: Keihin CorporationInventors: Takahiro Yasuda, Noriaki Sumisya, Daisuke Kondo, Kenichi Saito
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Patent number: 9435426Abstract: In a shifting-operation detection unit, a first detection unit has a first resistor connected in series to a first switch and a second resistor connected in parallel to the first switch and the first resistor, a second detection unit has a third resistor connected in series to a second switch and a fourth resistor connected in parallel to the second switch and the third resistor, and the first detection unit and the second detection unit are connected in series to be connected to correspond to a power supply terminal and a ground terminal of an external device and apply a divided voltage of a voltage of the power supply terminal to the external device via an electric wire, the divided voltage having voltage values corresponding to a shift-up operation and a shift-down operation, respectively.Type: GrantFiled: May 28, 2014Date of Patent: September 6, 2016Assignee: KEIHIN CORPORATIONInventors: Masashi Ebata, Nagatomo Harata
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Patent number: 9400743Abstract: An electronic control apparatus includes: a plurality of processing devices each having a rewritable non-volatile memory and each executing a predetermined process in accordance with stored data that is stored in the non-volatile memory, wherein one of the processing devices extracts, from rewriting data transmitted from an external rewriting apparatus and including a plurality of individual rewriting data each corresponding to one of a plurality of dedicated address ranges, one of the individual rewriting data which corresponds to one of the dedicated address ranges that is individually allocated in advance for the one of the processing devices, and rewrites the stored data that is stored in the non-volatile memory of the one of the processing devices by using the one of the individual rewriting data.Type: GrantFiled: June 20, 2013Date of Patent: July 26, 2016Assignee: KEIHIN CORPORATIONInventor: Hiroshi Sato
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Patent number: 9381786Abstract: A vehicular air conditioning apparatus may include a case which forms a passage for conditioned air that flows toward a vehicle interior; a partition plate which divides a space inside the case; a sliding door which moves to change a flow of the conditioned air inside the case; a rack gear provided on the sliding door; and a pinion gear which moves the sliding door by rotating while being engaged with the rack gear. The partition plate may have a guide which slidably supports an end portion of the sliding door. The case may have a seal member, and the sliding door and the seal member may be disposed to slidably oppose each other. The guide may have a cut-out portion in which the seal member is disposed, and an auxiliary guide may be provided in the cut-out portion.Type: GrantFiled: August 16, 2011Date of Patent: July 5, 2016Assignee: KEIHIN CORPORATIONInventor: Takahiro Seto
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Patent number: 9377787Abstract: A pressure reducing valve has a valve rod with a valve element member fitted over the valve rod. A fluid discharging structure is defined in an outer wall surface of the valve rod, or in an inner wall surface of the valve element member that surrounds the outer wall surface of the valve rod, for thereby discharging a fluid that has entered between the valve rod and the valve element member, into a valve hole.Type: GrantFiled: March 26, 2014Date of Patent: June 28, 2016Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.Inventors: Kazuki Ishikawa, Taneaki Miura, Koichi Takaku
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Patent number: 9377118Abstract: In a pressure reducing valve, a linking mechanism for linking a valve shaft of a pressure reducing valve body and a diaphragm rod is formed from a bottomed linking hole provided in the diaphragm rod, a decreased diameter shaft portion provided on the valve shaft, first and second increased diameter shaft portions disposed on the decreased diameter shaft portion, a retaining plate fitted into the linking hole and has a latching recess portion, and a latching ring that engages with a first latching groove provided on the retaining plate and a second latching groove provided on the linking hole, the latching ring being capable of increasing in diameter along a radial direction of the valve shaft, and a set spring is provided in a compressed state in the linking hole, the set spring urging the retaining plate toward the side on which the pressure reducing valve body is opened.Type: GrantFiled: June 21, 2013Date of Patent: June 28, 2016Assignee: Keihin CorporationInventor: Kei Ishihara
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Patent number: 9377117Abstract: In a pressure reducing valve, a valve rod forms one portion of a side wall of a piston, and is connected to the piston inwardly of a sliding contact area, which is held in sliding contact with an inner wall of a body. More specifically, a connection location between the valve rod and the piston is located at the interior of the piston.Type: GrantFiled: March 26, 2014Date of Patent: June 28, 2016Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.Inventors: Kazuki Ishikawa, Taneaki Miura, Koichi Takaku