Patents by Inventor Shigeyuki Enkaku
Shigeyuki Enkaku 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).
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Patent number: 10128720Abstract: This electric motor includes: a brushless motor (20); and a control device (50) that is coupled integrally to an end of a motor case (11) in an axial direction. The control device (50) includes: a bus bar unit main body (53) that has a base unit (54) with a plurality of bus bars wired thereinside and has a connector unit (58) provided integrally on the base unit (54) and led out to an outside of a housing (10); a motor drive unit (66) that drives the brushless motor (20); and a motor control unit (71) that controls the motor drive unit (66). The motor drive unit (66) is attached to a first main surface (51) of the base unit (54) while the motor control unit (71) is attached to a second main surface (52) of the base unit (54).Type: GrantFiled: December 25, 2013Date of Patent: November 13, 2018Assignee: Mitsuba CorporationInventors: Masaki Ishizeki, Yoichi Shindo, Shinji Shibuya, Ken Hirota, Atsushi Takahashi, Yuzuru Masuyama, Tomoo Iijima, Ken Yamamoto, Nobuyasu Sadakata, Shigeyuki Enkaku
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Publication number: 20150357886Abstract: This electric motor includes: a brushless motor (20); and a control device (50) that is coupled integrally to an end of a motor case (11) in an axial direction. The control device (50) includes: a bus bar unit main body (53) that has a base unit (54) with a plurality of bus bars wired thereinside and has a connector unit (58) provided integrally on the base unit (54) and led out to an outside of a housing (10); a motor drive unit (66) that drives the brushless motor (20); and a motor control unit (71) that controls the motor drive unit (66). The motor drive unit (66) is attached to a first main surface (51) of the base unit (54) while the motor control unit (71) is attached to a second main surface (52) of the base unit (54).Type: ApplicationFiled: December 25, 2013Publication date: December 10, 2015Applicant: MITSUBA CorporationInventors: Masaki Ishizeki, Yoichi Shindo, Shinji Shibuya, Ken Hirota, Atsushi Takahashi, Yuzuru Masuyama, Tomoo Iijima, Ken Yamamoto, Nobuyasu Sadakata, Shigeyuki Enkaku
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Patent number: 8967003Abstract: An engine starter includes a motor that comprises a drive shaft; and a unidirectional rotation clutch system that is helical-splined to the drive shaft. The clutch system includes a clutch inner; a clutch outer; a clutch roller that is interposed between the clutch outer and the clutch inner; and a spring that urges the clutch roller, wherein a compound film is formed on a surface of the clutch roller or surfaces of the clutch outer and the clutch inner.Type: GrantFiled: December 26, 2006Date of Patent: March 3, 2015Assignee: Mitsuba CorporationInventors: Hitoshi Ono, Tomohiko Ikemori, Shigeyuki Enkaku, Chihiro Horikoshi, Shinya Saito, Shigehiro Kanbe
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Patent number: 8511186Abstract: Excellent durability can be achieved by reducing thermal influences of the excessive load from the engine side for a clutch roller (13) in a unidirectional rotation clutch system that is helical-splined to a drive shaft that rotates in response to a driving force of a motor and structured such that the motor driving force can be transmitted while an engine driving force cannot be transmitted when an engine stars, wherein a compound film composed of an external mixed phase and an internal diffused phase is formed on the clutch roller (13) subjected to nitriding by tufftriding with nitrogen being penetrating and diffusing.Type: GrantFiled: December 21, 2007Date of Patent: August 20, 2013Assignee: Mitsuba CorporationInventors: Hitoshi Ono, Tomohiko Ikemori, Shigeyuki Enkaku, Chihiro Horikoshi, Shinya Saito, Shigehiro Kanbe
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Patent number: 8215195Abstract: An electromagnetic controller includes an exciting coil unit that is provided with a coil main body and an exciting piece that is positioned at a tip end side of the coil main body so as to be magnetized according to an excitation of the coil main body; and a plunger that is disposed in a ring-shaped space formed at an inner diameter side of the exciting coil unit so as to be movable in the ring-shaped space in an axial center direction, the plunger being displaceable from a non-acting position to an acting position at a tip end side under an attracting force based on magnetization of the exciting piece, wherein an urging member is provided at the inner diameter side of the exciting coil unit so as to urge the plunger to a side of the non-acting position according to demagnetization of the exciting piece.Type: GrantFiled: March 16, 2009Date of Patent: July 10, 2012Assignee: Mitsuba CorporationInventors: Masataka Odagiri, Tomohiko Ikemori, Hitoshi Ono, Yoshikazu Sato, Hiroshi Ooka, Shigeyuki Enkaku
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Patent number: 8069740Abstract: A screw mounting hole and a female screw part are formed in a bearing part of a gear cover, and the screw insertion hole is formed in the idle shaft. The idle shaft is fixed to the gear cover by inserting a fixing screw through the screw mounting hole and screwing it into the female screw part through the screw insertion hole. A positioning groove in a predetermined position in relation to the screw insertion hole is formed in the end face of the idle shaft. When the positioning groove is disposed perpendicularly to an engine mounting surface and the idle shaft is fitted to the gear cover, the screw mounting hole is opposed to the screw insertion hole and, when the fixing screw is fitted, the confirmation of hole positions and the aligning of holes can be eliminated.Type: GrantFiled: September 1, 2006Date of Patent: December 6, 2011Assignee: Mitsuba CorporationInventors: Shinya Saito, Chihiro Horikoshi, Shigeyuki Enkaku, Hitoshi Ono
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Publication number: 20100294078Abstract: Excellent durability can be achieved by reducing thermal influences of the excessive load from the engine side for a clutch roller (13) in a unidirectional rotation clutch system that is helical-splined to a drive shaft that rotates in response to a driving force of a motor and structured such that the motor driving force can be transmitted while an engine driving force cannot be transmitted when an engine stars, wherein a compound film composed of an external mixed phase and an internal diffused phase is formed on the clutch roller (13) subjected to nitriding by tufftriding with nitrogen being penetrating and diffusing.Type: ApplicationFiled: December 21, 2007Publication date: November 25, 2010Applicant: MITSUBA CORPORATIONInventors: Hitoshi Ono, Tomohiko Ikemori, Shigeyuki Enkaku, Chihiro Horikoshi, Shinya Saito, Shigehiro Kanbe
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Publication number: 20090250942Abstract: An electromagnetic controller includes an exciting coil unit that is provided with a coil main body and an exciting piece that is positioned at a tip end side of the coil main body so as to be magnetized according to an excitation of the coil main body; and a plunger that is disposed in a ring-shaped space formed at an inner diameter side of the exciting coil unit so as to be movable in the ring-shaped space in an axial center direction, the plunger being displaceable from a non-acting position to an acting position at a tip end side under an attracting force based on magnetization of the exciting piece, wherein an urging member is provided at the inner diameter side of the exciting coil unit so as to urge the plunger to a side of the non-acting position according to demagnetization of the exciting piece.Type: ApplicationFiled: March 16, 2009Publication date: October 8, 2009Applicant: MITSUBA CORPORATIONInventors: Masataka Odagiri, Tomohiko Ikemori, Hitoshi Ono, Yoshikazu Sato, Hiroshi Ooka, Shigeyuki Enkaku
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Publication number: 20090145263Abstract: An engine starter includes a motor that comprises a drive shaft; and a unidirectional rotation clutch system that is helical-splined to the drive shaft. The clutch system includes a clutch inner; a clutch outer; a clutch roller that is interposed between the clutch outer and the clutch inner; and a spring that urges the clutch roller, wherein a compound film is formed on a surface of the clutch roller or surfaces of the clutch outer and the clutch inner.Type: ApplicationFiled: December 26, 2006Publication date: June 11, 2009Applicant: Mitsuba CorporationInventors: Hitoshi Ono, Tomohiko Ikemori, Shigeyuki Enkaku, Chihiro Horikoshi, Shinya Saito, Shigehiro Kanbe
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Publication number: 20090133531Abstract: A helical spline section 61 is formed on a drive shaft 32 rotated by a motor 11 via a planetary gear mechanism 12, and an axially movable overrunning clutch 13 is mounted to the helical spline section 61. A clutch inner 57 of the overrunning clutch 13 is formed integrally with a pinion 14, and the pinion 14 engages with an idle gear 15. Between the idle gear 15 and the clutch cover 68 of the overrunning clutch 13, there is provided a synthetic resin slip plate 95. The slip plate 95 is provided with slide-contact surfaces 95a and 95b coming into contact with the idle gear 15 and the clutch cover 68. On each of the slide-contact surfaces 95a and 95b, there is provided concavely an annular grease reservoir 96 holding grease on each of the slide-contact surfaces. Thereby, the lubricating ability of a spacer provided between the slide-contact members having mutually different rotation numbers is improved, resulting in reducing the cost of materials and preventing the burn-in between the members.Type: ApplicationFiled: October 19, 2005Publication date: May 28, 2009Inventors: Hitoshi Ono, Michio Okada, Shigeyuki Enkaku, Shinya Saito, Chihiro Horikoshi
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Publication number: 20090038436Abstract: [PROBLEMS] To provide a starter motor enabling the easy and accurate aligning of holes when an idle shaft is mounted. [MEANS FOR SOLVING THE PROBLEMS] The screw mounting hole (106) and a female screw part (105) are formed in the bearing part (98) of a gear cover (24) and the screw insertion hole (104) is formed in the idle shaft (89). The idle shaft (89) is fixed to the gear cover (24) by inserting a fixing screw (107) through the screw mounting hole (106) and screwing it into the female screw part (105) through the screw insertion hole (104). A positioning groove (108) in a predetermined position relation with the screw insertion hole (104) is formed in the end face of the idle shaft (89).Type: ApplicationFiled: September 1, 2006Publication date: February 12, 2009Inventors: Shinya Saito, Chihiro Horikoshi, Shigeyuki Enkaku, Hitoshi Ono
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Publication number: 20080257077Abstract: A helical spline section 61 is formed on a drive shaft 32 rotated by a motor 11 via a planetary gear mechanism 12, and an axially movable overrunning clutch 13 is mounted to the helical spline section 61. A pinion 14 engaging with an idle gear 15 is formed integrally with a clutch inner 57 of the overrunning clutch 13. At the distal end of the pinion 14, there is formed a transport flange 72 engaging with the idle gear 15 and disengaging the idle gear 15 from a ring gear 16 together with the axial movement of the pinion 14. The root outer diameter of a gear section 71 of the pinion 14 is smaller than the outer diameter of the clutch inner 57, and the pinion 14 is formed integrally with the transport flange 72 and the clutch inner 57 by cold forging. Thereby, there is provided a simple, cheap and reliable electric starter motor capable of engaging and disengaging the idle gear and ring gear with each other and from each other without increasing the number of parts.Type: ApplicationFiled: October 19, 2005Publication date: October 23, 2008Applicant: MITSUBA CORPORATIONInventors: Hitoshi Ono, Michio Okada, Shigeyuki Enkaku, Shinya Saito, Chihiro Horikoshi
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Publication number: 20070234830Abstract: An engine starter includes a unidirectional rotation clutch system with a clutch outer having an outer-diameter side cylinder portion, a clutch inner having an inner-diameter side cylinder portion, long shaft-shaped clutch rollers that are long in a drive shaft direction and are installed in wedge spaces formed between the inner and outer-diameter side cylinder portions, and springs that urge the clutch rollers toward wedge portions, wherein at least one of the inner and outer-diameter side cylinder portions includes a wear preventive portion that prevents wearing of the clutch rollers that have turned so as to be in an inclined posture with respect to the drive shaft.Type: ApplicationFiled: March 22, 2007Publication date: October 11, 2007Applicant: MITSUBA CORPORATIONInventors: Hitoshi Ono, Tomohiko Ikemori, Shigeyuki Enkaku, Chihiro Horikoshi, Shinya Saito, Shigehiro Kanbe
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Patent number: 5548260Abstract: A plurality of square projections 26 are arranged in two mutually perpendicular directions at the pitch of P on to the surface of a plate member 27 between a first group of punched recesses 29a. The pitch P is twice the length of a side of each punched recess 29a. Shifted with respect to the first group of punched recesses 29a by P/2 in both the vertical and horizontal directions is a second group of punched recesses 29b. The punched recesses 29a and 29b define the projections 26 in the parts which are not occupied by these recesses generally in the pattern of a checker board. Because the projections 26 are separated from each other, and can effectively dissipate heat therefrom, the increase in the contact resistance due to heat generation can be prevented, and the efficiency of the starter motor can be increased.Type: GrantFiled: May 25, 1995Date of Patent: August 20, 1996Assignee: Mitsuba Electric Manufacturing Co., Ltd.Inventors: Mitsuhiro Kogure, Shinichi Nagashima, Kazuhisa Wakabayashi, Shigeyuki Enkaku, Hitoshi Shimayama, Minoru Kimura, Shuji Shimoyama, Tsugio Yokoo
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Patent number: 5467632Abstract: The capability of heat dissipation from the contact surface of a magnetic switch for a starter motor is improved without increasing the fabrication cost. A punch 28 having a plurality of square projections arranged in two mutually perpendicular directions at the pitch of P is applied to the surface of a plate member 27 to form a first group of punched recesses 29a. The pitch P is twice the length of a side of each punched recess 29a. Then, the punch 28 is shifted with respect to the first group of punched recesses 29 by P/2 in both the vertical and horizontal directions before forming a second group of punched recesses 29b. The punched recesses 29a and 29b define projections 26 in the parts which are not occupied by these recesses generally in the pattern of a checker board.Type: GrantFiled: December 16, 1993Date of Patent: November 21, 1995Assignee: Mitsuba Electric Mfg. Co., Ltd.Inventors: Mitsuhiro Kogure, Shinichi Nagashima, Kazuhisa Wakabayashi, Shigeyuki Enkaku, Hitoshi Shimayama, Minoru Kimura, Shuji Shimoyama, Tsugio Yokoo