Patents Assigned to Keihin Corporation
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Patent number: 8944097Abstract: In a decompression valve, a valve mechanism housed in a body has a valve body that can be seated on a valve seat facing a valve chamber into which high pressure fluid is introduced, and a valve shaft that has one end linked to a pressure receiving member operable in association with pressure of a decompression chamber communicating with a valve hole surrounded by the valve seat and that extends through the valve hole while having the other end facing a back pressure chamber communicating with the decompression chamber, and the valve body is fitted around the outer periphery of the valve shaft.Type: GrantFiled: February 10, 2010Date of Patent: February 3, 2015Assignee: Keihin CorporationInventor: Hiroaki Yamamoto
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Patent number: 8939821Abstract: A sliding door device which a sliding door is inserted into the guide portion in one direction of the sliding direction as an insertion direction upon assembling. A rack gear includes a plurality of standard teeth arranged along the sliding door, and a thick tooth having a larger width, along the sliding door, than those of the standard teeth and being disposed in a left/right symmetrical position with respect to a center in the sliding door. A pinion gear includes a single large tooth groove engaged with the thick tooth, and a short tooth having a length shorter than those of the other teeth while abutting onto a tooth tip of the thick tooth positioned at a rear side of the insertion direction, from among the respective thick teeth.Type: GrantFiled: February 16, 2011Date of Patent: January 27, 2015Assignee: Keihin CorporationInventor: Takashi Monoi
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Patent number: 8941355Abstract: What is provided is a cell balance control device including: a bypass circuit including a direct circuit with a bypass resistance and a switching element, the bypass circuit being connected in parallel to each of a plurality of cells included in a battery; a cell voltage detection unit detecting a cell voltage of each of the plurality of cells; a temperature detection unit detecting a temperature of a substrate on which the bypass circuit is mounted; and a control unit controlling and computing a duty ratio of the switching element based on a value detected by the temperature detection unit and a cell voltage of a discharge-needed cell obtained by the cell voltage detection unit.Type: GrantFiled: November 28, 2011Date of Patent: January 27, 2015Assignee: Keihin CorporationInventors: Seiji Kamata, Eishin Matsumoto
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Publication number: 20150000447Abstract: 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: ApplicationFiled: May 28, 2014Publication date: January 1, 2015Applicant: KEIHIN CORPORATIONInventors: Masashi Ebata, Nagatomo Harata
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Patent number: 8919748Abstract: An active antivibration device which includes a main body, a mobile element which is elastically supported inside the main body and movable in an axial direction of the main body, and a coil which is disposed inside the main body and fixed to the main body. The mobile element includes a mobile axis body supported in the axial direction of the main body, and a first yoke, a permanent magnet and a second yoke which are held by the mobile axis body and disposed successively along an axial direction of the mobile axis body. The permanent magnet is magnetized in the axial direction of the mobile axis body and disposed between the first yoke and the second yoke.Type: GrantFiled: January 28, 2011Date of Patent: December 30, 2014Assignees: Keihin Corporation, Sumitomo Riko Company LimitedInventors: Atsushi Urayama, Hirozumi Kon, Hironori Koyama, Mutsumi Muraoka, Atsushi Muramatsu
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Patent number: 8924059Abstract: The present invention provides an electronic control device including: a processing unit having a function of transition to a sleep mode; and a watch dog timer having a time counter that resets in response to a pulse signal outputted from the processing unit at certain intervals, this watch dog timer outputting a signal having a level inverted according to the existence or absence of overflow occurrence, in which the electronic control device further includes a latch circuit that latches the signal outputted from the watch dog timer and outputs a signal obtained through the latching as a first output enable signal, and the processing unit stops outputting the pulse signal before transition to the sleep mode, and carries out failure diagnosis of the watch dog timer based on the first output enable signal outputted from the latch circuit after output of the pulse signal is stopped.Type: GrantFiled: August 30, 2012Date of Patent: December 30, 2014Assignees: Keihin Corporation, Honda Motor Co., Ltd.Inventors: Taku Yoshikawa, Takeshi Yamada, Shinichi Daibo, Yuichi Kobata
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Publication number: 20140374512Abstract: An electromagnetic fuel injection valve includes a coil assembly fitted around an outer periphery of a fixed core, a coil housing forming a magnetic path between a valve housing and the fixed core while surrounding the coil assembly, and a synthetic resin covering layer molded so as to cover the coil housing, wherein a yoke supporting a front end of the coil assembly is formed on an outer periphery of the valve housing, the coil housing is formed from a body portion surrounding the coil assembly while being magnetically connected to the yoke and an end wall portion formed integrally with the body portion and fitted around an outer periphery of the fixed core, and a shoulder portion is formed on the outer periphery of the fixed core, the shoulder portion receiving the end wall portion and restricting the position of the coil housing in an axial direction.Type: ApplicationFiled: January 8, 2013Publication date: December 25, 2014Applicant: KEIHIN CORPORATIONInventors: Takuya Honjo, Jun Sato, Toshinori Kuzuma
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Publication number: 20140352824Abstract: A hydraulic pressure control apparatus includes a first pressure regulating valve for reducing an initial oil pressure of a working oil introduced from an inlet port, a solenoid-operated valve, and a second pressure regulating valve for converting the initial oil pressure of the working oil into an actuating pressure. The three valves share a single body. A joining boss and a relief valve, which is operable to release the working oil out of a passage in the body when the pressure of the working oil in the passage becomes equal to or greater than a predetermined threshold value, are arranged on a closed end face of the body. The joining boss and the relief valve have respective upper surfaces that are covered by a cover.Type: ApplicationFiled: May 29, 2014Publication date: December 4, 2014Applicant: KEIHIN CORPORATIONInventors: Kouichi Yamada, Kenji Suda
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Publication number: 20140352816Abstract: 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: ApplicationFiled: May 29, 2014Publication date: December 4, 2014Applicants: KEIHIN CORPORATION, Fuji Heavy Industries Ltd.Inventors: Kouichi Yamada, Keiichi Nagaseki, Kenji Suda, Tomotaka Terajima, Susumu Ito
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Patent number: 8899500Abstract: A gas fuel injection valve is provided in which a single nozzle member (11) is fixedly provided in a front end part of a valve housing (2), and this nozzle member (11) has formed therein a valve seat (13), a valve hole (45) extending through a central part of the valve seat (13), a throttle hole (46) having a smaller diameter than that of the valve hole (45) and communicating with an outlet of the valve hole (45), and a nozzle hole (48) having a larger diameter than that of the throttle hole (46) and communicating with an outlet of the throttle hole (46), wherein when an internal diameter of the throttle hole (46) is D1, a length of the hole (46) is L1, an internal diameter of the nozzle hole (48) is D2, and a length of the nozzle hole (48) is L2, L1/D1>1??(1) 1<D2/D1?1.2??(2) the above expressions (1) and (2) are satisfied.Type: GrantFiled: March 17, 2010Date of Patent: December 2, 2014Assignee: Keihin CorporationInventors: Toshinori Kuzuma, Takashi Yoshida, Wataru Sato, Yoji Nakajima
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Patent number: 8894395Abstract: A front housing configuring a scroll compressor is provided in its shaft hole with a first bearing, and the front housing rotatably supports a rotation shaft. The first bearing includes a ball bearing having a plurality of balls. First and second seal rings and are provided between an outer ring fixed to the front housing and an inner ring which abuts against an outer peripheral surface of the rotation shaft. A first seal ring disposed on the side of one side surface of the outer ring is provided such that the first seal ring is in non-contact with the inner ring, and the second seal ring disposed on the side of the other side surface of the outer ring abuts against the inner ring.Type: GrantFiled: March 30, 2012Date of Patent: November 25, 2014Assignee: Keihin CorporationInventors: Yusuke Nishimura, Kazuaki Higuchi, Satsuki Muraoka, Hiroki Kuwata
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Patent number: 8876394Abstract: In a rolling bearing with seal, an annular lip supporting portion having a larger thickness than that of a seal lip is formed on an inner periphery side of a seal member; the seal lip protruding on an inner peripheral surface of the lip supporting portion has: a cylindrical seal surface being in close contact with an outer peripheral surface of an inner race; and an inner side surface at least part of which in a region from an inner end of the seal surface to reach the lip supporting portion stands upright from the inner end of the seal surface in a direction perpendicular to a generating line of the outer peripheral surface of the inner race; and a width of the seal surface in an axial direction is set to be larger than a height of the seal lip in a radial direction.Type: GrantFiled: March 18, 2013Date of Patent: November 4, 2014Assignee: Keihin CorporationInventors: Tomoaki Ohba, Takuya Usami
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Publication number: 20140316646Abstract: A fuel injection valve includes a cylinder internal pressure sensor disposed in the vicinity of a distal end thereof. The cylinder internal pressure sensor detects a cylinder internal pressure in a cylinder and outputs a first sensor signal Ss1 responsive to the detected cylinder internal pressure. Further, a signal processor, which carries out predetermined signal processing with respect to the first sensor signal Ss1 to thereby convert the first sensor signal Ss1 into a second sensor signal Ss2, is disposed between the cylinder internal pressure sensor and a solenoid unit, which is disposed on a proximal end side of the fuel injection valve.Type: ApplicationFiled: April 17, 2014Publication date: October 23, 2014Applicants: Keihin Corporation, Honda Motor Co., Ltd.Inventors: Yoshihiro Kaneko, Gaku Sato, Junichi Fukuda, Mitsuhiro Iwadare, Tetsuji Furukawa, Takeshi Kumakura, Minoru Torii
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Patent number: 8864384Abstract: A seal lip having: a cylindrical seal surface in close contact with an outer peripheral surface of an inner race with outer side and inner side surfaces standing upright respectively from an outer end and an inner end of the seal surface and reaching a lip supporting portion of a seal member, and protruding on an inner peripheral surface of the lip supporting portion. The outer side surface is a perpendicular surface standing upright from the outer end of the seal surface in a direction perpendicular to a generating line of the outer peripheral surface of the inner race. The inner side surface includes: a perpendicular surface standing upright from the inner end of the seal surface in parallel with the outer side surface; and a conical surface inclined toward the outer side surface extending outward in a radial direction from an outer peripheral end of the perpendicular surface.Type: GrantFiled: March 19, 2013Date of Patent: October 21, 2014Assignees: Keihin Corporation, Minebea Co., Ltd.Inventors: Tomoaki Ohba, Takuya Usami, Kenichiro Nishimura, Akimi Furukoshi
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Publication number: 20140299373Abstract: 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: ApplicationFiled: October 4, 2012Publication date: October 9, 2014Applicants: KEIHIN CORPORATION, HONDA MOTOR CO., LTDInventors: Takeshi Nakamura, Daiki Kudo, Masashi Ueda, Kosuke Tachikawa, Tetsuya Hasebe
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Publication number: 20140292109Abstract: A current sensor and contactor apparatus reduces the space required for arranging a current sensor and a contactor. This current sensor and contactor apparatus comprises a current sensor, a contactor and a substrate. The current sensor has a current sensor element, the current sensor detects a current value of power inputted from the outside and outputs a detection signal indicating the current value from the current sensor element. The contactor turns on and off a power line through which the power flows based on a control signal inputted from the outside. On the substrate, the current sensor element of the current sensor is installed and also a plurality of signal lines connecting the current sensor element and the contactor are formed. The current sensor, the contactor and the substrate are integrated.Type: ApplicationFiled: March 7, 2014Publication date: October 2, 2014Applicant: KEIHIN CORPORATIONInventors: Seiji Kamata, Yoichi Kawaguchi, Kenichi Takebayashi
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Publication number: 20140290760Abstract: A pressure reducing valve has a seal member, which is mounted on a side wall of a piston. The seal member is arranged between a first ring and a second ring. Consequently, depending on the direction of displacement of the piston, the first ring or the second ring is positioned on one of a displacement direction upstream side or a displacement direction downstream side of the seal member. The first ring and the second ring are made of a resin material, for example a polytetrafluoroethylene resin or a polyetheretherketone resin, having lower coefficient of friction compared with that of the seal member.Type: ApplicationFiled: March 26, 2014Publication date: October 2, 2014Applicants: HONDA MOTOR CO., LTD., KEIHIN CORPORATIONInventors: Satoshi Iitaka, Taneaki Miura, Koichi Takaku, Hiroyasu Ozaki
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Publication number: 20140290759Abstract: 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: ApplicationFiled: March 26, 2014Publication date: October 2, 2014Applicants: Honda Motor Co., Ltd., KEIHIN CORPORATIONInventors: Kazuki Ishikawa, Taneaki Miura, Koichi Takaku
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Publication number: 20140290758Abstract: 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: ApplicationFiled: March 26, 2014Publication date: October 2, 2014Applicants: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.Inventors: Kazuki Ishikawa, Taneaki Miura, Koichi Takaku
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Publication number: 20140291340Abstract: 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: ApplicationFiled: March 24, 2014Publication date: October 2, 2014Applicant: KEIHIN CORPORATIONInventor: Hirokazu YAMANA
