Patents by Inventor Koichiro Kamei
Koichiro Kamei 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: 8297420Abstract: Rollers and springs are installed in notch portions of a clutch outer (S104), an inscribed circle diameter of the rollers is measured in a state in which the rollers are placed in contact with stopping portions by pressure from the springs (S105), and an outside diameter of a cylindrical portion is determined from the inscribed circle diameter measured value such that a predetermined amount of roller bite is achieved (S106). Then, the outside diameter of the cylindrical portion is finished so as to have the determined value of the outside diameter (S108). An overrunning clutch is assembled by pairing together the clutch outer, rollers, and springs and the clutch inner (S110).Type: GrantFiled: March 9, 2007Date of Patent: October 30, 2012Assignee: Mitsubishi Electric CorporationInventors: Koichiro Kamei, Kazuhiro Odahara, Hidekazu Katayama, Jiro Hirao
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Publication number: 20120260878Abstract: A ring gear to be coupled to a crankshaft of an engine; a starter motor for starting the engine; a pinion gear for transmitting rotation of the starter motor to the ring gear; pinion-gear meshing-engagement unit for moving the pinion gear to achieve meshing engagement with the ring gear; rpm-difference acquiring unit for acquiring an rpm difference between the pinion gear and the ring gear; and restart control unit for allowing the pinion gear to be moved by the pinion-gear meshing-engagement unit when the rpm difference between the pinion gear and the ring gear, which is acquired by the rpm-difference acquiring unit, becomes smaller than a threshold value are provided. The restart control unit includes threshold-value setting unit, and the threshold value corresponding to a characteristic to be input to the threshold-value setting unit is preset.Type: ApplicationFiled: October 26, 2010Publication date: October 18, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiroaki Kitano, Takashi Iwasaki, Masahiko Kurishige, Koichiro Kamei, Kazuhiro Odahara, Naohito Kaneda
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Patent number: 8290692Abstract: An engine-starting device for stopping the engine after satisfaction of an idling-stop condition during idling of a vehicle, starting rotation of a starter-motor upon satisfaction of a starter-motor rotation start condition, and causing a pinion gear to mesh with a ring gear upon satisfaction of a pinion gear meshing condition, includes the ring gear to be connected to a crank shaft, the pinion gear for transmitting the starter-motor rotation, a plunger for causing the pinion gear to mesh with the ring gear, and a starter control section for instructing energization of the starter-motor, in which the starter-motor is energized to be rotated upon the satisfaction of the starter-motor rotation start condition prior to clearing of the idling-stop condition in response to a restart request, and the pinion gear is caused to mesh with the ring gear by the plunger upon the satisfaction of the pinion gear meshing condition.Type: GrantFiled: September 14, 2009Date of Patent: October 16, 2012Assignee: Mitsubishi Electric CorporationInventors: Hiroaki Kitano, Masahiko Kurishige, Akihiko Imagi, Daisuke Mizuno, Koichiro Kamei, Kazuhiro Odahara, Naohito Kaneda
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Patent number: 8248193Abstract: In an electromagnetic switch for an auxiliary-rotation starter according to the present invention, the magnetic bypass core is disposed at a place that is an air gap portion, in a magnetic circuit, through which the plunger moves due to magnetic attractive force produced by energizing the attraction coil and the holding coil and that is between the outer circumference of the plunger and the inner circumference of the bobbin, in such a way that one end thereof makes contact with one end of the case and the other end thereof faces the end of the core by the intermediary of an air gap.Type: GrantFiled: November 4, 2009Date of Patent: August 21, 2012Assignee: Mitsubishi Electric CorporationInventors: Naohito Kaneda, Taehyun Kim, Koichiro Kamei, Noriaki Moriyama, Mitsuru Tsukima
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Publication number: 20120199090Abstract: Provided is an engine starting device enabling the meshing engagement of a pinion gear and a ring gear to be quickly and quietly achieved in an automatic idle-stop system while an engine is rotating by inertia. The engine starting device includes: a ring gear connected to a crankshaft of an engine; a starter motor for starting the engine; a pinion gear for transmitting rotation of the starter motor to the ring gear; pinion-gear moving portion for moving the pinion gear so as to achieve meshing engagement with the ring gear; and starter control portion for executing any one of a plurality of control modes.Type: ApplicationFiled: October 22, 2010Publication date: August 9, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiroaki Kitano, Masahiko Kurishige, Koichiro Kamei, Kazuhiro Odahara, Naohito Kaneda
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Publication number: 20120103294Abstract: An engine starting device for an automatic idling stop system includes: a crank angle sensor for detecting a crank angle of an engine; a ring gear connected to a crankshaft of the engine, for transmitting rotation of the engine; ring gear rpm detecting section; a starter motor for starting the engine; a pinion gear for transmitting rotation of the starter motor to the ring gear; pinion-gear push-out section for pushing out the pinion gear into meshing engagement with the ring gear; and pinion gear push-out control section for driving the pinion-gear push-out section to bring the pinion gear and the ring gear into meshing engagement when the ring gear rpm detected by the ring gear rotational speed detection section becomes smaller than a threshold value which is determined by at least one of the crank angle, a gear range, and a restart condition.Type: ApplicationFiled: April 15, 2010Publication date: May 3, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiroaki Kitano, Masahiko Kurishige, Daisuke Mizuno, Koichiro Kamei, Shiro Yonezawa, Kazuhiro Odahara, Naohito Kaneda
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Publication number: 20100271155Abstract: In an electromagnetic switch for an auxiliary-rotation starter according to the present invention, the magnetic bypass core is disposed at a place that is an air gap portion, in a magnetic circuit, through which the plunger moves due to magnetic attractive force produced by energizing the attraction coil and the holding coil and that is between the outer circumference of the plunger and the inner circumference of the bobbin, in such a way that one end thereof makes contact with one end of the case and the other end thereof faces the end of the core by the intermediary of an air gap.Type: ApplicationFiled: November 4, 2009Publication date: October 28, 2010Applicant: Mitsubishi Electric CorporationInventors: Naohito Kaneda, Taehyun Kim, Koichiro Kamei, Noriaki Moriyama, Mitsuru Tsukima
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Publication number: 20100256896Abstract: An engine-starting device for stopping the engine after satisfaction of an idling-stop condition during idling of a vehicle, starting rotation of a starter-motor upon satisfaction of a starter-motor rotation start condition, and causing a pinion gear to mesh with a ring gear upon satisfaction of a pinion gear meshing condition, includes the ring gear to be connected to a crank shaft, the pinion gear for transmitting the starter-motor rotation, a plunger for causing the pinion gear to mesh with the ring gear, and a starter control section for instructing energization of the starter-motor, in which the starter-motor is energized to be rotated upon the satisfaction of the starter-motor rotation start condition prior to clearing of the idling-stop condition in response to a restart request, and the pinion gear is caused to mesh with the ring gear by the plunger upon the satisfaction of the pinion gear meshing condition.Type: ApplicationFiled: September 14, 2009Publication date: October 7, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiroaki KITANO, Masahiko KURISHIGE, Akihiko IMAGI, Daisuke MIZUNO, Koichiro KAMEI, Kazuhiro ODAHARA, Naohito KANEDA
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Patent number: 7671506Abstract: A brush apparatus includes a brush and a brush holder. The brush includes a pigtail embedded in a wider side thereof so that the longitudinal side in cross-section of the pigtail extends in parallel with a surface of the brush coming into contact with a commutator. The brush holder includes a brush holding member, a brush spring for pressing the brush against the commutator for sliding contact, a base for holding the brush holding member and electrically connecting the same to an earth circuit, and a connection lug on the base. The brush holding member is formed with a notch on a wider side from an upper end thereof for allowing a downward movement of the pigtail when the brush wears and hence is pressed downward. A distal end of the pigtail is connected to the connection lug.Type: GrantFiled: October 24, 2008Date of Patent: March 2, 2010Assignee: Mitsubishi Electric CorporationInventors: Naohito Kaneda, Koichiro Kamei
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Publication number: 20090284097Abstract: A brush apparatus includes a brush and a brush holder. The brush includes a pigtail embedded in a wider side thereof so that the longitudinal side in cross-section of the pigtail extends in parallel with a surface of the brush coming into contact with a commutator. The brush holder includes a brush holding member, a brush spring for pressing the brush against the commutator for sliding contact, a base for holding the brush holding member and electrically connecting the same to an earth circuit, and a connection lug on the base. The brush holding member is formed with a notch on a wider side from an upper end thereof for allowing a downward movement of the pigtail when the brush wears and hence is pressed downward. A distal end of the pigtail is connected to the connection lug.Type: ApplicationFiled: October 24, 2008Publication date: November 19, 2009Applicant: Mitsubishi Electric CorporationInventors: Naohito KANEDA, Koichiro KAMEI
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Publication number: 20080289446Abstract: Obtained is an engine starter having a structure in which, even when frictional heat is generated on a roller due to sliding of a roller and a clutch inner with respect to each other, deformation of a rolling contact surface of the roller is reduced by suppressing reduction in hardness of the rolling contact surface of the roller due to the frictional heat, thereby making it possible to improve transmission of a rotation force from a clutch outer to a clutch inner. The engine starter includes a clutch (5) for transmitting a rotation force of an output shaft (4) to a pinion gear (7), a clutch outer (10), a clutch inner (11) having one end portion facing an inner portion of the clutch outer (10) and another end portion to which the pinion gear (7) is fixed, and a roller (12) which rolls while being provided between the clutch outer (10) and the clutch inner (11). The clutch outer (10) is formed with a notch portion (10a) of a tapered shape.Type: ApplicationFiled: November 21, 2007Publication date: November 27, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Koichiro Kamei, Hidekazu Katayama, Kazuhiro Odahara, Mutsuhiro Ichioka
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Publication number: 20080053777Abstract: Rollers and springs are installed in notch portions of a clutch outer (S104), an inscribed circle diameter of the rollers is measured in a state in which the rollers are placed in contact with stopping portions by pressure from the springs (S105), and an outside diameter of a cylindrical portion is determined from the inscribed circle diameter measured value such that a predetermined amount of roller bite is achieved (S106). Then, the outside diameter of the cylindrical portion is finished so as to have the determined value of the outside diameter (S108). An overrunning clutch is assembled by pairing together the clutch outer, rollers, and springs and the clutch inner (S110).Type: ApplicationFiled: March 9, 2007Publication date: March 6, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Koichiro Kamei, Kazuhiro Odahara, Hidekazu Katayama, Jiro Hirao
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Patent number: 7302869Abstract: A pinion includes: a first pinion flange portion disposed so as to protrude radially at a front end of a pinion boss portion; and a second pinion flange portion disposed so as to protrude radially facing the first pinion flange portion from an opposite side of the pinion boss portion. A movement linking body includes: first and second engaging recess portions fitting together with the pinion boss portion and an intermediate gear boss portion; a first sliding surface coming into contact with the first pinion flange portion, the first sliding surface restricting rearward movement of the pinion; a second sliding surface coming into contact with a front-end end surface of the second pinion flange portion, the second sliding surface restricting forward movement of the pinion; and a third sliding surface coming into contact with the clutch cover, the third sliding surface restricting forward movement of the pinion.Type: GrantFiled: August 17, 2005Date of Patent: December 4, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Koichiro Kamei, Yoshiyuki Okada
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Publication number: 20060169069Abstract: A pinion includes: a first pinion flange portion disposed so as to protrude radially at a front end of a pinion boss portion; and a second pinion flange portion disposed so as to protrude radially facing the first pinion flange portion from an opposite side of the pinion boss portion. A movement linking body includes: first and second engaging recess portions fitting together with the pinion boss portion and an intermediate gear boss portion; a first sliding surface coming into contact with the first pinion flange portion, the first sliding surface restricting rearward movement of the pinion; a second sliding surface coming into contact with a front-end end surface of the second pinion flange portion, the second sliding surface restricting forward movement of the pinion; and a third sliding surface coming into contact with the clutch cover, the third sliding surface restricting forward movement of the pinion.Type: ApplicationFiled: August 17, 2005Publication date: August 3, 2006Inventors: Koichiro Kamei, Yoshiyuki Okada
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Patent number: 6768241Abstract: A rotating-electric machine for use in engine starter capable of improving power by reducing inductance of coil is provided. An armature 7 is provided inside a stator, and when an armature winding 2 is inserted into a slot 4 provided in the armature 7, the armature winding 2 is formed into a wave winding and a short-pitch winding. In case that number of poles 2p=6 and number of slots Ns=23, the armature winding 2 are inserted into 1st to 4th slots, and a back pitch yb is established to be 3, whereby a short-pitch degree &dgr;(=|Ns/2p−yb|) is 0.83 and an expression of 0.5<&dgr;<1 is satisfied.Type: GrantFiled: December 26, 2002Date of Patent: July 27, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Koichiro Kamei, Takehiro Kobayashi
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Publication number: 20030193257Abstract: A rotating-electric machine for use in engine starter capable of improving power by reducing inductance of coil is provided. An armature 7 is provided inside a stator, and when an armature winding 2 is inserted into a slot 4 provided in the armature 7, the armature winding 2 is formed into a wave winding and a short-pitch winding. In case that number of poles 2p=6 and number of slots Ns=23, the armature winding 2 are inserted into 1st to 4th slots, and a back pitch yb is established to be 3, whereby a short-pitch degree &dgr;(=|Ns/2p−yb|) is 0.83 and an expression of 0.5<&dgr;<1 is satisfied.Type: ApplicationFiled: December 26, 2002Publication date: October 16, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Koichiro Kamei, Takehiro Kobayashi
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Patent number: 6382037Abstract: To prevent an attracting force to the plunger from becoming insufficient, at least one of an output shaft and a thrust spline is formed from magnetic material having a lower relative permeability than iron.Type: GrantFiled: December 8, 1999Date of Patent: May 7, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takehiro Kobayashi, Shigeru Shiroyama, Akira Kuragaki, Koichiro Kamei, Hidekazu Katayama, Masahiko Tsukahara, Tadanori Yamaguchi, Jiro Hirao
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Patent number: 6333567Abstract: To secure sufficient attractive force against a plunger, an overrunning clutch is arranged so that one end of a thrust spline is positioned so as to maintain a prescribed interval from the end of the plunger in the condition where the plunger is unexcited by an exciting coil and the outside periphery of the output shaft corresponding to the prescribed interval is covered by a cylinder body formed of a non-magnetic material or less permeable material.Type: GrantFiled: December 22, 1999Date of Patent: December 25, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shigeru Shiroyama, Motoi Hisamoto, Akira Kuragaki, Koichiro Kamei, Takehiro Kobayashi, Hidekazu Katayama
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Patent number: 6286378Abstract: To reduce abrasion of the pinion and the ring gear, a coil spring and a plate are arranged between the inner circumference of the plunger and the output shaft. The plate is adapted to the rear end of the thrust spline of the over-running clutch to transmit the elastic force of the coil spring to the thrust spline.Type: GrantFiled: November 17, 1999Date of Patent: September 11, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Koichiro Kamei, Shigeru Shiroyama, Akira Kuragaki, Hidekazu Katayama
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Patent number: 6269706Abstract: To fully secure the precision around an output shaft, an electromagnet is axially held in position between a center bracket and a front bracket which form an enclosing member for a starter.Type: GrantFiled: December 15, 1999Date of Patent: August 7, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akira Kuragaki, Shigeru Shiroyama, Koichiro Kamei, Hidekazu Katayama