Patents by Inventor Shigeyoshi SAKURABA
Shigeyoshi SAKURABA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11519466Abstract: An armature is configured to come into contact with an actuator due to magnetic attraction force. An outer plate is fixed to an armature, the outer plate being located on an opposite side of the armature from the actuator, the outer plate being configured to rotate together with the armature. An inner hub is located between the armature and the outer plate to be movable in a direction along a rotation axis, the inner hub being fixed to a driven device. A rubber member is disposed between the inner hub and the outer plate to give an urging force to the inner hub and the outer plate in a direction away from each other. This electromagnetic clutch is configured such that the urging force of the rubber member non-linearly increases as the actuator and the armature approach each other due to the magnetic attraction force.Type: GrantFiled: October 15, 2020Date of Patent: December 6, 2022Assignee: DENSO CORPORATIONInventors: Shigeyoshi Sakuraba, Toshihiro Hayashi, Kiyoshi Kurohata, Toshihiro Konishi, Kazuma Tachibana
-
Patent number: 11353068Abstract: A power transmission device includes an electromagnet, a rotor, an armature and a hub. The hub couples the armature to a shaft of a drive-subject device. The hub includes: an outer hub that is coupled to the armature; a boss portion that is coupled to the shaft; an inner side plate-shaped portion that extends from the boss portion toward a radially outer side; and an inner plate that is placed between the outer hub and the inner side plate-shaped portion. The inner side plate-shaped portion and the inner plate are formed integrally in one piece. At least one of the inner side plate-shaped portion and the inner plate is formed by a member that is configured to deform or melt with heat generated by friction between the rotor and the armature when the shaft of the drive-subject device is locked at a time of energizing the electromagnet.Type: GrantFiled: August 20, 2019Date of Patent: June 7, 2022Assignee: DENSO CORPORATIONInventors: Toshihiro Konishi, Shigeyoshi Sakuraba, Takayuki Hirose, Toshihiro Hayashi
-
Patent number: 11286997Abstract: An armature includes an inner plate located on an inner side of a groove and an outer plate located on an outer side of the groove. The hub includes: an outer hub; an inner hub that is coupled to a shaft; and a primary elastic member that is interposed between the inner hub and the outer hub and is configured to exert an elastic force to the outer hub in a direction away from a rotor. The outer hub includes an outer side coupling portion that is opposed to the outer plate and the inner plate and is coupled to the outer plate. The hub includes a secondary elastic member that is clamped between: the outer plate and the inner plate located on one side of the secondary elastic member; and the outer side coupling portion located on another side of the secondary elastic member.Type: GrantFiled: September 25, 2019Date of Patent: March 29, 2022Assignee: DENSO CORPORATIONInventors: Toshihiro Konishi, Shigeyoshi Sakuraba, Takayuki Hirose, Toshihiro Hayashi, Kazuma Tachibana, Hiroki Nagahashi
-
Publication number: 20210025462Abstract: An armature is configured to come into contact with an actuator due to magnetic attraction force. An outer plate is fixed to an armature, the outer plate being located on an opposite side of the armature from the actuator, the outer plate being configured to rotate together with the armature. An inner hub is located between the armature and the outer plate to be movable in a direction along a rotation axis, the inner hub being fixed to a driven device. A rubber member is disposed between the inner hub and the outer plate to give an urging force to the inner hub and the outer plate in a direction away from each other. This electromagnetic clutch is configured such that the urging force of the rubber member non-linearly increases as the actuator and the armature approach each other due to the magnetic attraction force.Type: ApplicationFiled: October 15, 2020Publication date: January 28, 2021Applicant: DENSO CORPORATIONInventors: Shigeyoshi SAKURABA, Toshihiro HAYASHI, Kiyoshi KUROHATA, Toshihiro KONISHI, Kazuma TACHIBANA
-
Patent number: 10851842Abstract: A power transmission device includes an electromagnet, a rotor, an armature and a hub that couples the armature to a shaft of a driving target device. The hub includes an outer hub coupled to the armature, an inner hub coupled to the shaft, and an elastic member interposed between the outer hub and the inner hub. An outer peripheral side of the inner hub includes plural extending parts each extending outward in a radial direction. An inner peripheral side of the outer hub includes an inner peripheral side wall that overlaps with the extending parts in a rotational direction and surrounds the extending parts. The elastic member is disposed in an unbonded state with respect to at least one of the inner hub and the outer hub between the outer peripheral side of the inner hub and the inner peripheral side of the outer hub.Type: GrantFiled: March 7, 2019Date of Patent: December 1, 2020Assignee: DENSO CORPORATIONInventors: Toshihiro Hayashi, Hiroki Nagahashi, Kiyoshi Kurohata, Toshihiro Konishi, Shigeyoshi Sakuraba, Takayuki Hirose
-
Publication number: 20200018362Abstract: An armature includes an inner plate located on an inner side of a groove and an outer plate located on an outer side of the groove. The hub includes: an outer hub; an inner hub that is coupled to a shaft; and a primary elastic member that is interposed between the inner hub and the outer hub and is configured to exert an elastic force to the outer hub in a direction away from a rotor. The outer hub includes an outer side coupling portion that is opposed to the outer plate and the inner plate and is coupled to the outer plate. The hub includes a secondary elastic member that is clamped between: the outer plate and the inner plate located on one side of the secondary elastic member; and the outer side coupling portion located on another side of the secondary elastic member.Type: ApplicationFiled: September 25, 2019Publication date: January 16, 2020Inventors: Toshihiro KONISHI, Shigeyoshi SAKURABA, Takayuki HIROSE, Toshihiro HAYASHI, Kazuma TACHIBANA, Hiroki NAGAHASHI
-
Publication number: 20190368555Abstract: A power transmission device includes an electromagnet, a rotor, an armature and a hub. The hub couples the armature to a shaft of a drive-subject device. The hub includes: an outer hub that is coupled to the armature; a boss portion that is coupled to the shaft; an inner side plate-shaped portion that extends from the boss portion toward a radially outer side; and an inner plate that is placed between the outer hub and the inner side plate-shaped portion. The inner side plate-shaped portion and the inner plate are formed integrally in one piece. At least one of the inner side plate-shaped portion and the inner plate is formed by a member that is configured to deform or melt with heat generated by friction between the rotor and the armature when the shaft of the drive-subject device is locked at a time of energizing the electromagnet.Type: ApplicationFiled: August 20, 2019Publication date: December 5, 2019Inventors: Toshihiro KONISHI, Shigeyoshi SAKURABA, Takayuki HIROSE, Toshihiro HAYASHI
-
Publication number: 20190203776Abstract: A power transmission device includes an electromagnet, a rotor, an armature and a hub that couples the armature to a shaft of a driving target device. The hub includes an outer hub coupled to the armature, an inner hub coupled to the shaft, and an elastic member interposed between the outer hub and the inner hub. An outer peripheral side of the inner hub includes plural extending parts each extending outward in a radial direction. An inner peripheral side of the outer hub includes an inner peripheral side wall that overlaps with the extending parts in a rotational direction and surrounds the extending parts. The elastic member is disposed in an unbonded state with respect to at least one of the inner hub and the outer hub between the outer peripheral side of the inner hub and the inner peripheral side of the outer hub.Type: ApplicationFiled: March 7, 2019Publication date: July 4, 2019Inventors: Toshihiro HAYASHI, Hiroki NAGAHASHI, Kiyoshi KUROHATA, Toshihiro KONISHI, Shigeyoshi SAKURABA, Takayuki HIROSE
-
Patent number: 9746045Abstract: Provided are a fastened composite and a method of fastening an adherend, which includes a friction material, to a coating object, comprising; forming on at least a part of a surface of the coating object a coated film with a curable resin-containing paint; and fastening the adherend to the surface of the coating object, by subjecting heating and/or irradiation of an active energy ray to the coated film, while making the adherend closely contact the coated film to press it by a predetermined pressure, to cure the coated film.Type: GrantFiled: July 3, 2013Date of Patent: August 29, 2017Assignee: DENSO CORPORATIONInventors: Kunihiro Kado, Kazunori Mizutori, Yasuo Tabuchi, Shigeyoshi Sakuraba
-
Patent number: 9528560Abstract: A recess, which has a bottom, is formed in at least one of a contact surface of a rotor and a contact surface of an armature. A solid material, which is made of thermoset resin that contains powder of metal oxide or metal dispersed in the thermoset resin, is formed in an inside of the recess.Type: GrantFiled: October 20, 2014Date of Patent: December 27, 2016Assignees: DENSO CORPORATION, MEIJO UNIVERSITYInventors: Yousuke Yamagami, Yasuo Tabuchi, Motohiko Ueda, Shouzou Tatematsu, Youichi Murakami, Shigeyoshi Sakuraba, Hatsuhiko Usami
-
Publication number: 20150292573Abstract: A recess, which has a bottom, is formed in at least one of a contact surface of a rotor and a contact surface of an armature. A solid material, which is made of thermoset resin that contains powder of metal oxide or metal dispersed in the thermoset resin, is formed in an inside of the recess.Type: ApplicationFiled: October 20, 2014Publication date: October 15, 2015Inventors: Yousuke YAMAGAMI, Yasuo TABUCHI, Motohiko UEDA, Shouzou TATEMATSU, Youichi MURAKAMI, Shigeyoshi SAKURABA, Hatsuhiko USAMI
-
Publication number: 20150167766Abstract: Provided are a fastened composite and a method of fastening an adherend, which includes a friction material, to a coating object, comprising; forming on at least a part of a surface of the coating object a coated film with a curable resin-containing paint; and fastening the adherend to the surface of the coating object, by subjecting heating and/or irradiation of an active energy ray to the coated film, while making the adherend closely contact the coated film to press it by a predetermined pressure, to cure the coated film.Type: ApplicationFiled: July 3, 2013Publication date: June 18, 2015Applicant: DENSO CORPORATIONInventors: Kunihiro Kado, Kazunori Mizutori, Yasuo Tabuchi, Shigeyoshi Sakuraba
-
Publication number: 20140291105Abstract: An electromagnetic clutch with improved transmission torque by means of a low-cost method includes an electromagnetic coil, a rotor that is rotary driven by means of an external drive source, an armature attracted to the rotor by means of a magnetic force of the electromagnetic coil, and a hub structure. The electromagnetic clutch is characterized in that a recessed and projected surface having a surface roughness of 10 ?m or more and a hardness of 4 GPa or less is formed on the friction surface of the rotor and/or the friction surface of the armature.Type: ApplicationFiled: November 2, 2012Publication date: October 2, 2014Inventors: Shigeyoshi Sakuraba, Yasuo Tabuchi, Youichi Murakami
-
Patent number: 8757343Abstract: A clutch mechanism includes a pulley, an armature, an electromagnet, a plate spring and a damper. The armature combines with the pulley in a direction of a rotation axis. The electromagnet generates attracting magnetic force, which attracts the armature in a joining direction. The plate spring generates resilient force, which urges the armature in an opposite direction from the joining direction. The damper includes an impact mitigation part mitigating an impact when the armature collides with the pulley. The pulley, the armature, the damper and the plate spring are arranged in this order in the direction of the rotation axis. The damper includes a contact portion contacting part of the armature in the direction of the rotation axis. The plate spring includes a pressing part pressing the contact portion on the armature during both the joining and unjoining of the armature and the pulley.Type: GrantFiled: November 24, 2010Date of Patent: June 24, 2014Assignee: DENSO CORPORATIONInventors: Shigeyoshi Sakuraba, Yasuo Tabuchi
-
Publication number: 20110127136Abstract: A clutch mechanism includes a pulley, an armature, an electromagnet, a plate spring, and a damper. The armature is joined to the pulley in a direction of a rotation axis. The electromagnet generates attracting magnetic force, which attracts the armature in a joining direction. The plate spring generates resilient force, which urges the armature in an opposite direction from the joining direction. The damper includes an impact mitigation part mitigating an impact when the armature collides with the pulley. The pulley, the armature, the damper, and the plate spring are arranged in this order in the direction of the rotation axis. The damper includes a contact portion in contact with part of the armature in the direction of the rotation axis. The plate spring includes a pressing part pressing the contact portion on the armature both at time of joining and at time of unjoining between the armature and the pulley.Type: ApplicationFiled: November 24, 2010Publication date: June 2, 2011Applicant: DENSO CORPORATIONInventors: Shigeyoshi SAKURABA, Yasuo Tabuchi