Patents Assigned to JTEKT
-
Publication number: 20190347619Abstract: A problem solution system includes a problem information storage unit configured to store problem information input by a presenter, a member storage unit configured to store a plurality of persons including at least persons other than the presenter and designated as members of a problem solution team for the problem information, and an opinion exchange tool configured such that each of the plurality of designated members is allowed to input an opinion about planning or implementation of a solution to the problem information and the plurality of members are allowed to view the opinion.Type: ApplicationFiled: May 1, 2019Publication date: November 14, 2019Applicant: JTEKT CORPORATIONInventors: Kazuma SUZUKI, Guangyu ZHU, Tomotaka HANJI, Teruo OKUMURA
-
Publication number: 20190344821Abstract: A column jacket includes a hollow outer jacket having a pair of clamped portions disposed to sandwich a slit between the clamped portions and a tubular inner jacket having, in an area where the inner jacket is fitted in the outer jacket, an elongated hole extending in an axial direction. A clamping mechanism clamps the pair of clamped portions with a pair of side plates of a fixed bracket. The elongated hole is disposed on any one of a first side and a second side, in the lateral direction, of a vertical plane passing through a central axis of the inner jacket, at a position other than on a straight line that extends in a vertical direction through the central axis.Type: ApplicationFiled: April 25, 2019Publication date: November 14, 2019Applicant: JTEKT CORPORATIONInventors: Yusuke NISHIMINE, Masayoshi SAKUDA, Atsumune NAGATANI, Daiki GOTO, Naohiro OOSONO, Yu MYOHOJI
-
Publication number: 20190346287Abstract: An angle computing device includes a first computing unit configured to compute a rotation angle of a motor based on a detection signal from a detection unit that detects the rotation angle of the motor, and a second computing unit configured to compute turn number information indicating the number of turns of the motor as information used to compute the rotation angle based on the detection signal from the detection unit. When a start switch of a vehicle is off, the first computing unit stops and the second computing unit computes the turn number information. When the start switch is on, the first computing unit computes the rotation angle using the turn number information that is computed by the second computing unit while the start switch is off.Type: ApplicationFiled: April 29, 2019Publication date: November 14, 2019Applicant: JTEKT CORPORATIONInventors: Susumu KOIKE, Takehide ADACHI
-
Patent number: 10473169Abstract: An interrupter includes: an intermittent member having a meshing tooth meshing with a second rotary member, and moving in an axial direction between a coupled position and an uncoupled position; and an actuator making the intermittent member move in the axial direction. The actuator includes: a coil generating magnetic flux; and a plunger moving with the intermittent member in the axial direction. The plunger is disposed in a manner capable of making relative rotation to one of the first and second rotary members via first and second air gaps. When the coil is energized, the magnetic flux is introduced to the plunger from one of the first and second air gaps, the magnetic flux is led out of the plunger to the other air gap, and the plunger moves in the axial direction so as to reduce at least one air gap of the first and second air gaps.Type: GrantFiled: August 3, 2017Date of Patent: November 12, 2019Assignee: JTEKT CORPORATIONInventors: Tadashi Yoshisaka, He Jin, Yasunori Kamitani
-
Patent number: 10474128Abstract: A plurality of production facilities and an analysis apparatus are connected through a fog network. The analysis apparatus performs a data analysis based on detection information of detectors acquired through the fog network and stores determination information relating to an abnormality of each of the plurality of production facilities or an abnormality of a production object as a result of the data analysis. Each of the plurality of production facilities determines an abnormality of the each of the plurality of production facilities or an abnormality of the production object based on the determination information stored in the analysis apparatus.Type: GrantFiled: November 11, 2016Date of Patent: November 12, 2019Assignee: JTEKT CORPORATIONInventors: Toshiyuki Tsuzuki, Katsushi Kitamura, Koji Kito, Sakon Murayama, Yuki Ishigure
-
Publication number: 20190341869Abstract: A motor control device includes: a noise reduction unit that sets a PWM count in units of PWM cycles for each PWM cycle in a current control cycle such that a current that flows through a frame ground because of a phase voltage for any one of three phases is canceled out with a current that flows through the frame ground because of a phase voltage for one of the two other phases in each PWM cycle in the current control cycle; and a noise canceling circuit configured to generate a current that is opposite in phase to a current that flows through the frame ground because of a phase voltage for the other of the two other phases in each PWM cycle in the current control cycle.Type: ApplicationFiled: April 26, 2019Publication date: November 7, 2019Applicant: JTEKT CORPORATIONInventors: Hiroshi SUMASU, Koichiro MATSUHISA
-
Publication number: 20190337332Abstract: A method for manufacturing a hub unit includes: preparing a hub unit intermediate including an inner shaft, an inner ring fixed to an axial end of the inner shaft, and an outer ring rotatably arranged with respect to the inner shaft and the inner ring; preparing a magnetic seal member including a seal member and an annular magnetic member having no magnetic pole; and arranging the magnetic seal member between the inner ring and the outer ring of the hub unit intermediate. The method further includes: forming splines extending along the axial direction by cutting the inner circumferential surface of the inner shaft of the hub unit intermediate in which the magnetic seal member has been arranged; and forming magnetic poles in a circumferential direction of the magnetic member of the hub unit intermediate in which the plurality of splines have been formed.Type: ApplicationFiled: September 15, 2017Publication date: November 7, 2019Applicants: JTEKT CORPORATION, KOYO SEALING TECHNO CO., LTD.Inventors: Atsushi OHASHI, Hiroshi SHIME, Hiroyuki ORISAKA
-
Patent number: 10465745Abstract: A thrust roller bearing cage having pockets for accommodating rollers includes an inner annular portion and cage bars that extend in a radial manner from a radially outer edge of the inner annular portion so as to separate the pockets from each other in a circumferential direction. The inner annular portion has a first axial end surface and a second axial end surface. The first axial end surface has an oil passage groove for guiding lubricating oil to the pockets. The second axial end surface is recessed relative to the first axial end surface in an axial direction of the inner annular portion so as to form a recessed portion that communicates with the oil passage groove. The entire region of the first axial end surface that is located radially directly inside the cage bars is located radially outside the second axial end surface.Type: GrantFiled: April 27, 2018Date of Patent: November 5, 2019Assignee: JTEKT CORPORATIONInventor: Yoshihito Nakashima
-
Publication number: 20190329818Abstract: A manual steering command value generation unit generates a manual steering command value using steering torque. An integrated angle command value computation unit computes an integrated angle command value by adding the manual steering command value to an automatic steering command value. A control unit performs angle control on an electric motor on the basis of the integrated angle command value. The control unit includes: a basic torque command value computation unit that computes a basic torque command value on the basis of the integrated angle command value; a disturbance torque estimation unit that estimates disturbance torque other than motor torque that is generated by the electric motor and acts on an object to be driven by the electric motor; and a disturbance torque compensation unit that corrects the basic torque command value in accordance with the disturbance torque.Type: ApplicationFiled: April 22, 2019Publication date: October 31, 2019Applicant: JTEKT CORPORATIONInventors: Naoki SHOJI, Robert FUCHS, Tsutomu TAMURA, Mitsuko YOSHIDA
-
Publication number: 20190329813Abstract: A steering column device includes: an outer tube in which a high rigidity portion and a low rigidity portion are formed; an inner tube disposed in the outer tube; a tubular retainer disposed between the outer tube and the inner tube; at least three protruding portions formed on an outer peripheral surface of the retainer; and a fastening mechanism that regulates relative movement of the outer tube and the inner tube in an axial direction. The at least three protruding portions include: a first protruding portion and a second protruding portion that are disposed so that a midpoint between the first protruding portion and the second protruding portion in a circumferential direction is offset to the high rigidity portion side from a vertical line; and a third protruding portion that is disposed in a region of the low rigidity portion.Type: ApplicationFiled: April 19, 2019Publication date: October 31, 2019Applicant: JTEKT CORPORATIONInventors: Akio OSUKA, Yasuhiro TANIOKA, Takuya SUZUKI, Ryoji IKEGAMI
-
Patent number: 10461611Abstract: In a driving unit of an electromechanical motor unit, a semiconductor chip and a smoothing capacitor are joined to a second main surface of a substrate having a first main surface and the second main surface. The semiconductor chip includes a first end portion facing the second main surface, and a second end portion on the opposite side of the semiconductor chip from the first end portion. The smoothing capacitor includes a third end portion facing the second main surface, and a fourth end portion on the opposite side of the smoothing capacitor from the third end portion. The semiconductor chip is thermally connected to a bottom wall portion of a cover member, at a position closer to the second main surface than the fourth end portion is. The bottom wall portion is thermally connected to the motor housing via a sidewall portion of the cover member.Type: GrantFiled: June 14, 2017Date of Patent: October 29, 2019Assignee: JTEKT CORPORATIONInventors: Takahito Hieda, Kouya Yoshida, Naoki Tani
-
Patent number: 10458480Abstract: Outer ball grooves of an outer joint member of a constant velocity joint each have a first ball groove for allowing a ball to roll therein when the constant velocity joint operates, and a second ball groove having a ball groove radius larger than a ball groove radius of the first ball groove. The second ball groove has a curved line and a connecting line. The curved line is connected to a groove bottom end of the first ball groove located closer to an opening of the outer joint member and is curved radially outward in a concave manner. The connecting line connects the curved line and the opening. The curved line is curved with a curvature center that is located closer to the opening than the groove bottom end of the first ball groove and that is located radially inside the outer joint member.Type: GrantFiled: June 5, 2017Date of Patent: October 29, 2019Assignee: JTEKT CORPORATIONInventors: Tatsuya Yoshii, Yoshinari Sakai, Yoshimi Aoki, Tomohiro Nishida, Tomo Shigeno
-
Patent number: 10461481Abstract: An electronic control unit includes a first circuit board and an electrical connection module disposed on a base of a body housing, a first connector group electrically connected to the electrical connection module, and a second connector group disposed on a wall of the body housing. The first connector group and the second connector group are arranged in a first direction along the wall. The base, the electrical connection module, and the first circuit board have respective positioning holes for positioning relative to each other. A positioning pin is insertable into openings of the second positioning hole and the first positioning hole, and another positioning pin is insertable into openings of the third positioning hole and the first positioning hole.Type: GrantFiled: November 9, 2018Date of Patent: October 29, 2019Assignee: JTEKT CORPORATIONInventor: Takahito Hieda
-
Patent number: 10458488Abstract: A one-way clutch includes an inner ring, an outer ring, a plurality of rollers, an annular cage that holds the rollers, and springs that bias the rollers toward a first side in a circumferential direction. The inner ring has a rib portion located on a first side in an axial direction and protruding outward in a radial direction. The cage has a pair of annular portions provided on the first side and a second side in the axial direction with respect to the rollers and a plurality of cage bars. One of the annular portions on the first side in the axial direction has an abutting contact surface that comes into abutting contact with the rib portion in the axial direction.Type: GrantFiled: December 8, 2016Date of Patent: October 29, 2019Assignee: JTEKT CORPORATIONInventors: Ikuo Yamamoto, Tomoya Yamatani
-
Patent number: 10457315Abstract: A first sliding member is held by an upper jacket. A second sliding member includes a fixed portion fixed to the first sliding member, and an extension portion that extends in a column axis direction and that has a coupled portion coupled to the fixed portion at a predetermined location in the column axis direction. The second sliding member being clamped by the clamping mechanism slides relative to a supporting member and a lower jacket during a secondary impact. The second sliding member includes a slit that reduces coupling stiffness between the fixed portion and the coupled portion of the extension portion so as to facilitate, in a clamping state of the clamping mechanism, deflection of the coupled portion of the extension portion relative to the fixed portion in a lateral direction as seen from the column axis direction.Type: GrantFiled: January 30, 2018Date of Patent: October 29, 2019Assignee: JTEKT CORPORATIONInventors: Masayoshi Sakuda, Atsumune Nagatani, Michiaki Yamaoka, Yoshihito Yoshihara, Satoki Yoshimura, Yu Myohoji
-
Patent number: 10457141Abstract: A control apparatus that controls a four-wheel drive vehicle in which a driving force is transmitted to rear wheels via a dog clutch, a propeller shaft, and a driving force transmission apparatus is configured to, when switching to a four-wheel drive mode, reduce a difference in rotation speeds of an intermediate rotational member and a ring gear member by a frictional force between a friction surface of a friction member, which is configured such that its rotation relative to the intermediate rotational member is restricted, and a target frictional slide surface of the ring gear member, and then couple the intermediate rotational member and the ring gear member by a clutch member in a state in which engagement forces of friction clutches configured to transmit the driving force between each of first and second output rotational members and the intermediate rotational member of the driving force transmission apparatus are set to engagement forces that allow their relative rotation.Type: GrantFiled: January 30, 2018Date of Patent: October 29, 2019Assignee: JTEKT CORPORATIONInventor: Noriyuki Fujii
-
Publication number: 20190323498Abstract: A sliding member has a sliding surface sliding under a wet condition in which a lubricant oil exists. The sliding surface is coated with a laminate film comprising an upper layer and a lower layer. The lower layer comprises hydrogen-free amorphous carbon (hydrogen-free DLC) and carbon particles dispersed on or in the hydrogen-free DLC. The hydrogen-free DLC has a hydrogen content of 5 atom % or less when the lower layer as a whole is 100 atom %. The upper layer comprises boron-containing amorphous carbon (B-DLC) and has protrusions on a surface side of the upper layer along the carbon particles of the lower layer. The B-DLC has a boron content of 1-40 atom % when the upper layer as a whole is 100 atom %. The protrusions have a particle diameter of 0.5-5 ?m and exist with a density of 20 protrusions/100 ?m2 or more.Type: ApplicationFiled: January 3, 2019Publication date: October 24, 2019Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, JTEKT CORPORATIONInventors: Masaru OKUYAMA, Hiroyuki MORI, Mamoru TOHYAMA, Noriyuki EMOTO, Naohito YOSHIDA
-
Publication number: 20190323552Abstract: A double row bearing device includes an outer ring, a first inner ring body, a second inner ring body, and a protrusion. The first inner ring body is provided on an outer circumferential surface of a tube portion and is rotatable as a unit with the tube portion. The second inner ring body fits on the outer circumferential surface of the tube portion and is located to provide an axial clearance between the first and the second inner ring body. The protrusion includes at least one of a first portion and a second portion. The first portion protrudes toward the second inner ring body from a first end face of the first inner ring body facing the second inner ring body. The second portion protrudes toward the first inner ring body from a second end face of the second inner ring body facing the first inner ring body.Type: ApplicationFiled: April 18, 2019Publication date: October 24, 2019Applicant: JTEKT CORPORATIONInventor: Takashi TOMIKAWA
-
Publication number: 20190323609Abstract: A sealing member includes an annular core metal and an annular seal body fixed to the core metal and having a lip portion. The seal body is made of a crosslinked material of a fluororubber composition that contains uncrosslinked fluororubber, a peroxide crosslinking agent, and an acid acceptor. The crosslinked material of the fluororubber composition contains 1 to 5 parts by weight of the acid acceptor with respect to 100 parts by weight of the uncrosslinked fluororubber. The seal body is fixed to the core metal via an adhesive layer provided on a surface of the core metal.Type: ApplicationFiled: April 12, 2019Publication date: October 24, 2019Applicant: JTEKT CORPORATIONInventor: Yohei SHIMIZU
-
Publication number: 20190323626Abstract: A valve device includes a body, a joint, a check valve, a valve seat fixation member having an outer peripheral surface on which an external thread is provided, and a sealing member. The body has an attachment hole that attaches the joint and the valve seat fixation member from an outside of the body in a sequence of the joint and the valve seat fixation member, and that has an inner peripheral surface in which an internal thread screwed to the external thread of the valve seat fixation member is provided. The sealing member is provided between the joint and the valve seat fixation member. An outer peripheral edge of the sealing member is located radially inward of a screwed region of the internal thread and the external thread.Type: ApplicationFiled: April 17, 2019Publication date: October 24, 2019Applicant: JTEKT CORPORATIONInventors: Takuya SUZUKI, Kazuki OKAMURA, Takashi YAMAZAKI, Toshihiko SHIMA, Kazushi NUMAZAKI, Naohiro SAKAMOTO, Akio NAKAMURA, Koji KIDA