Patents Assigned to JTEKT
  • Patent number: 9488233
    Abstract: A control device for an electromagnetic clutch includes: a first switch that is connected to one end of an electromagnetic coil forming the electromagnetic clutch; a second switch that is connected to the other end of the electromagnetic coil; and a microcomputer that controls an on/off state of both switches. The control device further includes: a first diode having its anode terminal connected between the electromagnetic coil and the first switch and its cathode terminal connected between the second switch and an in-vehicle power source; and a second diode having its anode terminal connected to the ground and its cathode terminal connected between the electromagnetic coil and the second switch. The microcomputer stops power supply to the electromagnetic coil by turning off both switches.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: November 8, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Masahiro Hayakawa, Tsutomu Matsumoto
  • Publication number: 20160319873
    Abstract: A cage has a small-diameter annular portion provided between an inner ring and an outer ring on a first side of a bearing in an axial direction and a plurality of cage bars extending from the small-diameter annular portion toward a second side of the bearing in the axial direction. In each of an inner peripheral surface and an outer peripheral surface of the small-diameter annular portion, recessed portions are formed which is each open toward a bearing exterior on the first side of the bearing in the axial direction. An inner wall of each recessed portion has an inclined surface that serves to enlarge a cross section of the recessed portion toward the bearing exterior on the first side of the bearing in the axial direction.
    Type: Application
    Filed: April 20, 2016
    Publication date: November 3, 2016
    Applicant: JTEKT CORPORATION
    Inventor: Akiyuki SUZUKI
  • Publication number: 20160319906
    Abstract: A worm reduction gear includes a bias member that biases a second end of a worm shaft in such a direction that the second end approaches a worm wheel. A guide member that guides movement of the second end is held in a holding hole in a housing. The holding hole has an opening at an end of the housing. The guide member includes a ring portion fitted in the holding hole to guide movement of the second end and a closing portion that closes an end of the ring portion and thus an opening of the holding hole.
    Type: Application
    Filed: April 20, 2016
    Publication date: November 3, 2016
    Applicant: JTEKT CORPORATION
    Inventor: Naofumi KAWAMURA
  • Publication number: 20160318544
    Abstract: In a worm reduction gear, a second bearing that supports a second end of a worm shaft and a guide member are housed in a holding hole in a housing. A bias member biases the second end of the worm shaft toward the worm wheel (in a second direction). The guide member is elastically fitted in the holding hole in the housing to guide movement of the second end via the second bearing. A slit is fanned in the guide member. Stress is relieved which is exerted on the guide member when the guide member is elastically fitted in the holding hole.
    Type: Application
    Filed: April 20, 2016
    Publication date: November 3, 2016
    Applicant: JTEKT CORPORATION
    Inventor: Naofumi KAWAMURA
  • Patent number: 9483041
    Abstract: A block execution sequence display system includes: a machine tool that has numerical control and sequence control; a programmable controller that executes a sequence program; a numerical control device that executes a NC program; block execution sequence array display means for displaying a block execution sequence array in which sequence functional blocks and a NC program execution block are arranged in an execution sequence; selecting means for selecting one of blocks in the array; and NC functional block execution sequence array display means for, when the NC program execution block is selected by the selecting means, displaying a NC functional block execution sequence array in which a plurality of NC functional blocks are arranged in an execution sequence.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: November 1, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Koji Kito, Terukazu Senda
  • Publication number: 20160311083
    Abstract: A grinding wheel includes a plurality of super abrasive grains arranged so as not to contact one another; a vitrified bond formed like a bridge that bridges the plurality of super abrasive grains one another, and bonding the plurality of super abrasive grains one another; a plurality of fine grains arranged in the vitrified bond while forming a group and interposed between the plurality of super abrasive grains so that the plurality of super abrasive grains are arranged so as not to contact one another; and pores formed around the vitrified bond.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 27, 2016
    Applicant: JTEKT CORPORATION
    Inventor: Tomoyuki KASUGA
  • Publication number: 20160311460
    Abstract: A fastening mechanism fastens a first side plate to a second side plate by a fastening member. A boss with a rhombic cross-section of the fastening member is inserted into a telescopic-adjust long groove of the second side plate. An outer periphery of the boss includes a first corner part and a third corner part each forming an obtuse angle and facing each other. The first corner part is disposed on an upper side in an axial direction, on a lower side in a tilt direction, while the third corner part is disposed on a lower side in the axial direction, on an upper side in the tilt direction. A width across the first corner part and the third corner part is shorter than a groove width W of the telescopic-adjust long groove.
    Type: Application
    Filed: April 18, 2016
    Publication date: October 27, 2016
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Susumu IMAGAKI, Atsushi TANO, Kentaro KIKUIRI, Shunsuke NUNOMURA, Yuuji ISHII, Hiroshi KAWAKAMI
  • Publication number: 20160314909
    Abstract: Provided is a lithium ion capacitor that can retain a capacity under a high temperature environment and has small increase in internal resistance while using an aqueous binder for a positive electrode. A lithium ion capacitor includes: a positive electrode; a negative electrode; and an electrolytic solution contacting the positive electrode and the negative electrode. The electrolytic solution includes an organic solvent and a lithium salt electrolyte having an imide structure; the positive electrode includes a collector foil and a positive electrode active material; and the positive electrode active material is held onto the collector foil through a binder including a polymer having a RED value to the electrolytic solution of more than 1, the RED value representing a relative energy difference with respect to the electrolytic solution based on Hansen solubility parameters.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 27, 2016
    Applicant: JTEKT CORPORATION
    Inventors: Takashi MATSUURA, Koji NISHI, Naoki OHMI, Yukihiro KOMATSUBARA, Sachiko KUBOTA, Takashi TAMURA, Takumi MIO
  • Publication number: 20160312902
    Abstract: A valve device includes: a poppet that is formed in a hollow shaft shape except for a leading end, has a tapered closure part at the leading end and a side hole passing through a wall of the hollow shaft-shaped part, and rotates around a shaft center thereof during opening and closing actions; and a valve seat having a sloped seat surface with which the closure part of the poppet comes into contact when closing the valve device. The closure part of the poppet or the seat surface of the valve seat, whichever has a higher hardness, has a cut mark of the opposite direction from a direction of rotation of the poppet around the shaft center that occurs during the valve closing action.
    Type: Application
    Filed: April 26, 2016
    Publication date: October 27, 2016
    Applicants: Jtekt Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Junya MIYAKE, Koji Nishi, Kazuhisa Sugiyama, Takumi Mio, Sachiko Kubota, Eiji Okawachi, Akira Yamashita, Naohiro Takeshita
  • Patent number: 9475343
    Abstract: A sealing device includes a core metal that is fitted to the outer ring, and a sealing member that is fixed to the core metal. The core metal has a cylindrical portion that is fitted to the inner periphery of an end portion of the outer ring, an outer annular portion, and an inner annular portion. The sealing member has a covering portion that covers the outer annular portion and the cylindrical portion, and a space is formed between the covering portion and the flange. The sealing member further has an inner lip portion, and an outer lip portion. The covering portion has a deformed portion used to enlarge the space to suppress stagnation of water in the space.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: October 25, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Teruyuki Wakisaka, Kazuki Takamatsu
  • Publication number: 20160307697
    Abstract: A magnet manufacturing method has a step of preparing mixed powder of magnetic powder of a hard magnetic material, which includes one or more of an Fe—N-based compound and an R—Fe—N-based compound and a lubricant that allows formation of an adsorption film on a surface of the magnetic powder, a step of heating the mixed powder at a temperature that is equal to or higher than a melting point of the lubricant and that is lower than a decomposition temperature of the magnetic powder to form the adsorption film of the lubricant on the surface of the magnetic powder, a step of pressurizing and molding the magnetic powder in order to obtain a primary molding, and a step of heating the primary molding at a temperature that is lower than the decomposition temperature of the magnetic powder.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 20, 2016
    Applicant: JTEKT CORPORATION
    Inventors: Takumi MIO, Koji NISHI, Yusuke KIMOTO, Takashi TAMURA
  • Publication number: 20160306333
    Abstract: A monitoring device for a programmable controller can resume continuous operation from an appropriate step, when the equipment is restarted after abnormality handling process. The monitoring device includes: a read device that reads operating state information of equipment from the programmable controller during individual operation; a relationship information storage device that stores relationship information showing relationship between the first step to be executed out of the steps when the equipment is restarted after the individual operation and the operating state information; a selection device that refers to the operating state information and selects the first step to be executed when the equipment is restarted, based on the relationship information; and a command transmission device that transmits a command to change an in-execution flag of the programmable controller which shows the first step to be executed when the equipment is restarted, based on the selection result of the selection device.
    Type: Application
    Filed: April 14, 2016
    Publication date: October 20, 2016
    Applicant: JTEKT Corporation
    Inventors: Akihiro SHIMIZU, Terukazu Senda
  • Publication number: 20160308478
    Abstract: In a motor control device that can perform more appropriate motor control, a switching arm has a first upper FET, a second upper FET, and a lower FET connected in series to one another. A source electrode of the second upper FET and a drain electrode of the lower FET are connected to each other via an intermediate line. The intermediate line is connected to a U-phase motor coil of a motor via a power line. The first upper FET, the second upper FET, and the lower FET are each provided with a parasitic diode that prevents current from flowing from a battery side to a ground side. A phase opening relay FET is provided on the U-phase power line. A parasitic diode of the phase opening relay FET is provided such that a current is not applied from the U-phase motor coil to the U-phase switching arm.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 20, 2016
    Applicant: JTEKT CORPORATION
    Inventor: Shunsuke SUGIURA
  • Publication number: 20160303651
    Abstract: A magnet manufacturing method has a step of preparing magnetic powder of a hard magnetic material, which includes one or more of an Fe-N-based compound and an R-Fe-N-based compound, a step of pressurizing and molding the magnetic powder at a pressure equal to or higher than a fracture pressure at which the particles of the magnetic powder are destroyed, to obtain a primary molding, and a step of heating the primary molding at a temperature lower than a decomposition temperature of the magnetic powder. The magnetic powder has at least two peaks in a particle size distribution.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 20, 2016
    Applicant: JTEKT CORPORATION
    Inventors: Takumi MIO, Koji NISHI, Yusuke KIMOTO, Takashi TAMURA
  • Publication number: 20160307696
    Abstract: A magnet manufacturing method has preparing magnetic powder of a hard magnetic material, which includes one or more of an Fe-N-based compound and an R-Fe-N-based compound, pressurizing and molding the magnetic powder at a pressure equal to or higher than a fracture pressure at which particles of the magnetic powder are destroyed in order to obtain a primary molding, and heating the primary molding at a temperature lower than a decomposition temperature of the magnetic powder. A particle size distribution measured for the magnetic powder indicates that, for the magnetic powder, a ratio of a particle size with a cumulative frequency of 50% to a particle size with a cumulative frequency of 3% is less than eight.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 20, 2016
    Applicant: JTEKT CORPORATION
    Inventors: Takumi MIO, Koji NISHI, Yusuke KIMOTO, Takashi TAMURA
  • Patent number: 9469330
    Abstract: A lock device of a steering system includes a tongue piece unit and a frame plate held on a first side plate. The tongue piece unit includes elastic tongue pieces supported in a cantilever manner by a vertical frame provided along at least one of longitudinal edge portions of at least one of first side plates to form a row that extends in a tilt direction. The frame plate includes partitioning portions, between which a plurality of grooves are formed to house the elastic tongue pieces so as to be projectable. When a steering column is locked, some of the elastic tongue pieces are pressed by a pressing surface of a tightening member to be retracted into grooves. Consequently, the tightening member is interposed between the elastic tongue pieces projecting from the grooves in the tilt direction.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: October 18, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Hidenobu Tanaka, Yoshihito Yoshihara, Atsumune Nagatani
  • Patent number: 9469332
    Abstract: In a coupling structure for coupling a shaft to a universal joint yoke, an insertion portion of a shaft is passed through an insertion hole of a universal joint yoke. An outward protrusion of a distal end portion of the shaft faces a peripheral edge of a first opening of the insertion hole across a gap in an axial direction. A fixed portion that adjoins the insertion portion is fixed to a peripheral edge of a second opening of the insertion hole by welding. An engaging portion formed on an outer periphery of the insertion portion and an engaged portion formed in an inner periphery of the universal joint yoke, which defines the insertion hole, are engageable with each other in a rotational direction with a rotation permitting gap for phase adjustment.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: October 18, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Atsuhiro Yoshida, Naoji Kawasoko, Osamu Honda, Nobuaki Shibata
  • Publication number: 20160297468
    Abstract: An ECU acquires a steering torque detected by a torque sensor (step S1). The ECU drives an electromagnet of a solenoid actuator (step S2). The ECU drives a steering operation motor in accordance with the direction of the detected steering torque acquired in step S1 to apply, to an output shaft of a clutch, a torque acting in such a direction that a torque being exerted on a clutch mechanism is reduced (step S3). When a predetermined time has elapsed since driving of the steering operation motor in step S3 (step S4: YES), the ECU 40 reverses a driving direction of the steering operation motor to apply, to the output shaft of the clutch, a torque acting in a direction opposite to the direction of the last torque applied (step S5).
    Type: Application
    Filed: April 6, 2016
    Publication date: October 13, 2016
    Applicant: JTEKT CORPORATION
    Inventors: Keisuke IZUTANI, Tomonari YAMAKAWA, Tomoya YAMATANI
  • Publication number: 20160298050
    Abstract: In a method of manufacturing a sliding member including a polyamide resin and a filler, a compound having a carbodiimide bond is supplied during kneading of the polyamide resin and the filler.
    Type: Application
    Filed: April 6, 2016
    Publication date: October 13, 2016
    Applicant: JTEKT CORPORATION
    Inventors: Takeshi KUNISHIMA, Tomoya NISHIDA
  • Publication number: 20160297465
    Abstract: A spline telescoping shaft includes an inner shaft including a male spline and a tubular outer shaft including a female spline. A resin film is provided on a surface of at least either of both the splines. An addendum modification coefficient e, the number of teeth Z, a module m, a reference pitch circle diameter PCD, a tip circle diameter d1 and a root circle diameter d2 of the male spline and a tip circle diameter D1 and a root circle diameter D2 of the female spline have relations expressed by expressions (1) to (8). m(Z+4)>d1>m(Z+2) . . . (1), mZ>d2>m(Z?1) . . . (2), m(Z+4)>D2>m(Z+2) . . . (3), mZ>D1>m(Z?1) . . . (4), D2>d1 . . . (5), D1>d2 . . . (6), PCD=mZ . . . (7), and 0.4<e<1.1 . . .
    Type: Application
    Filed: December 15, 2014
    Publication date: October 13, 2016
    Applicant: JTEKT CORPORATION
    Inventors: Naoto MIYAWAKI, Kenji HIGASHI