Patents by Inventor Shigenori Yoneda
Shigenori Yoneda 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: 11949304Abstract: A rotary electric machine includes a stator. The stator has a coil end provided by a plurality of joint portions. The coil end has a leader wire connected to a power terminal. The stator has a coil end provided by a plurality of turn portions. The coil end has a circumferential pair whose top portions are offset in a circumferential direction. The circumferential pair has a height HG21. The coil end has an axial pair whose top portions are offset in an axial direction. The axial pair has a height HG22. The housing has a facing surface facing the coil end. The coil end provides a height distribution which adapts an unevenness of the opposing surface.Type: GrantFiled: August 2, 2021Date of Patent: April 2, 2024Assignee: DENSO CORPORATIONInventors: Masayoshi Yamamoto, Mai Goto, Shigenori Yoneda
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Patent number: 11901787Abstract: A rotary electric machine includes a rotor and a stator. The stator has a coil end. The coil end has a plurality of lead wires. The plurality of lead wires have an inner lead wire with respect to the radial direction RD and an outer lead wire outside the inner lead wire with respect to the radial direction RD. The rotary electric machine includes a plurality of connection members. The inner lead wire and the outer lead wire are electrically and mechanically connected to the plurality of connection members. The plurality of connection members provide a heat transfer path from the inner lead wire. The inner lead wire and the outer lead wire demonstrate different vibration characteristics.Type: GrantFiled: August 2, 2021Date of Patent: February 13, 2024Assignee: DENSO CORPORATIONInventors: Mai Goto, Masayoshi Yamamoto, Shigenori Yoneda
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Publication number: 20210367469Abstract: A rotary electric machine includes a stator. The stator has a coil end provided by a plurality of joint portions. The coil end has a leader wire connected to a power terminal. The stator has a coil end provided by a plurality of turn portions. The coil end has a circumferential pair whose top portions are offset in a circumferential direction. The circumferential pair has a height HG21. The coil end has an axial pair whose top portions are offset in an axial direction. The axial pair has a height HG22. The housing has a facing surface facing the coil end. The coil end provides a height distribution which adapts an unevenness of the opposing surface.Type: ApplicationFiled: August 2, 2021Publication date: November 25, 2021Applicant: DENSO CORPORATIONInventors: Masayoshi YAMAMOTO, Mai GOTO, Shigenori YONEDA
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Publication number: 20210367489Abstract: A rotary electric machine includes a rotor and a stator. The stator has a coil end. The coil end has a plurality of lead wires. The plurality of lead wires have an inner lead wire with respect to the radial direction RD and an outer lead wire outside the inner lead wire with respect to the radial direction RD. The rotary electric machine includes a plurality of connection members. The inner lead wire and the outer lead wire are electrically and mechanically connected to the plurality of connection members. The plurality of connection members provide a heat transfer path from the inner lead wire. The inner lead wire and the outer lead wire demonstrate different vibration characteristics.Type: ApplicationFiled: August 2, 2021Publication date: November 25, 2021Applicant: DENSO CORPORATIONInventors: Mai GOTO, Masayoshi YAMAMOTO, Shigenori YONEDA
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Publication number: 20210359568Abstract: A rotary electric machine includes a rotor and a stator. The stator has a coil end. The coil end has a plurality of lead wires. The plurality of lead wires have an inner lead wire with respect to the radial direction RD and an outer lead wire outside the inner lead wire with respect to the radial direction RD. The rotary electric machine includes a plurality of connection members. The inner lead wire and the outer lead wire are electrically and mechanically connected to the plurality of connection members. The plurality of connection members provide a heat transfer path from the inner lead wire. The inner lead wire and the outer lead wire demonstrate different vibration characteristics.Type: ApplicationFiled: August 2, 2021Publication date: November 18, 2021Applicant: DENSO CORPORATIONInventors: Mai Goto, Masayoshi Yamamoto, Shigenori Yoneda
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Patent number: 9843231Abstract: A rotating electric machine includes an annular stator core with stator teeth. Each of the stator teeth has a pair of protruding portions that are formed at a distal end of the stator tooth so as to protrude from a main body of the stator tooth respectively toward opposite circumferential sides. Each of the stator teeth has a distal end surface radially facing a rotor. The circumferential lengths of the distal end surfaces of all the stator teeth are equal to each other. The stator teeth are classified into first and second groups. The protruding portions formed in the stator teeth of the first group are first protruding portions and the protruding portions formed in the stator teeth of the second group are second protruding portions. The first protruding portions have a different cross-sectional shape perpendicular to an axial direction of the stator core from the second protruding portions.Type: GrantFiled: January 6, 2015Date of Patent: December 12, 2017Assignee: DENSO CORPORATIONInventors: Hiroki Katou, Shigenori Yoneda
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Publication number: 20150200571Abstract: A rotating electric machine includes an annular stator core with stator teeth. Each of the stator teeth has a pair of protruding portions that are formed at a distal end of the stator tooth so as to protrude from a main body of the stator tooth respectively toward opposite circumferential sides. Each of the stator teeth has a distal end surface radially facing a rotor. The circumferential lengths of the distal end surfaces of all the stator teeth are equal to each other. The stator teeth are classified into first and second groups. The protruding portions formed in the stator teeth of the first group are first protruding portions and the protruding portions formed in the stator teeth of the second group are second protruding portions. The first protruding portions have a different cross-sectional shape perpendicular to an axial direction of the stator core from the second protruding portions.Type: ApplicationFiled: January 6, 2015Publication date: July 16, 2015Inventors: Hiroki KATOU, Shigenori YONEDA
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Patent number: 8963382Abstract: A stator includes a ring-shaped stator core having a plurality of slots arranged in a circumferential direction and a stator coil wound around the slots. The stator coil disposed within the slots is fixed by an impregnating material applied from an inner peripheral side of the stator core. An innermost-diameter coil wire of the stator coil positioned on the innermost-diameter side within the slots is provided with a first angle section that is angled towards an outward core-diameter direction side from a center section in a core-axis direction towards one end side, and a second angle section that is angled towards the outward core-diameter direction side from the center section in the core-axis direction towards another end side. The center section in the core-axis direction of the innermost-diameter coil wire projects towards an inward core-diameter direction side.Type: GrantFiled: August 5, 2011Date of Patent: February 24, 2015Assignee: Denso CorporationInventors: Shigenori Yoneda, Toshiaki Oohara
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Patent number: 8816562Abstract: A stator for an electric rotating machine includes a stator core that has slots, a stator coil, and an impregnant applied to the inner surface of the stator core. The stator core has a plurality of teeth that divide the slots. Teeth having chamfered surfaces between a projected tip surface and each side surface of the teeth and teeth without chamfered surfaces are intermingled. At least one bent corner part formed at an end of the projected tip surface of the teeth is formed in an arcuate surface. A relationship (R1>R2) is satisfied, where R1 represents a curvature radius of arcuate surfaces formed in the curved corner part where the projected tip surface and the chamfered surface abut and R2 represents a curvature radius of the arcuate surfaces formed in the curved corner part where the projected tip surface and the side surface abut.Type: GrantFiled: August 5, 2011Date of Patent: August 26, 2014Assignee: Denso CorporationInventors: Shigenori Yoneda, Toshiaki Oohara
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Patent number: 8217547Abstract: In a rotating electric machine, a path length between a rotor and an inter-hetero-phase tooth where a magnetic flux from a magnetic pole proceeds from the rotor and starts to enter the inter-hetero-phase tooth is longer than a path length between the rotor and an inter-V-phase tooth where the magnetic flux proceeds from the rotor and starts to enter the inter-V-phase tooth.Type: GrantFiled: November 3, 2009Date of Patent: July 10, 2012Assignees: Toyota Jidosha Kabushiki Kaisha, Denso CorporationInventors: Munehiro Kamiya, Shigenori Yoneda, Hiroshi Kaneiwa, Hiroyuki Ikuta, Yasuhide Yagyu, Tomofumi Morishita
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Publication number: 20120043849Abstract: The stator for the electric rotating machine includes a stator core that has slots, a stator coil, and an impregnant applied to the inner surface of the stator core. The stator core has a plurality of teeth that divide the slots. The teeth with chamfered surfaces and ones without chamfered surfaces are intermingled between a projected tip surface and each side surfaces of the teeth. At least one of bent corner parts formed at both ends of the projected tip surface of the teeth is formed in an arcuated surface. A relationship (R1>R2) is satisfied, where R1 represents a curvature radius of arcuated surfaces formed in the curved corner part where the projected tip surface and the chamfered surface abut and R2 represents a curvature radius of the arcuated surfaces formed in the curved corner part where the projected tip surface and the side surface abut.Type: ApplicationFiled: August 5, 2011Publication date: February 23, 2012Applicant: DENSO CORPORATIONInventors: Shigenori Yoneda, Toshiaki Oohara
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Publication number: 20120032551Abstract: A stator includes a ring-shaped stator core having a plurality of slots arranged in a circumferential direction and a stator coil wound around the slots. The stator coil disposed within the slots is fixed by an impregnating material applied from an inner peripheral side of the stator core. An innermost-diameter coil wire of the stator coil positioned on the innermost-diameter side within the slots is provided with a first angle section that is angled towards an outward core-diameter direction side from a center section in a core-axis direction towards one end side, and a second angle section that is angled towards the outward core-diameter direction side from the center section in the core-axis direction towards another end side. The center section in the core-axis direction of the innermost-diameter coil wire projects towards an inward core-diameter direction side.Type: ApplicationFiled: August 5, 2011Publication date: February 9, 2012Applicant: DENSO CORPORATIONInventors: Shigenori Yoneda, Toshiaki Oohara
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Publication number: 20100117465Abstract: In a rotating electric machine, a path length between a rotor and an inter-hetero-phase tooth where a magnetic flux from a magnetic pole proceeds from the rotor and starts to enter the inter-hetero-phase tooth is longer than a path length between the rotor and an inter-V-phase tooth where the magnetic flux proceeds from the rotor and starts to enter the inter-V-phase tooth.Type: ApplicationFiled: November 3, 2009Publication date: May 13, 2010Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Munehiro KAMIYA, Shigenori Yoneda, Hiroshi Kaneiwa, Hiroyuki Ikuta, Yasuhide Yagyu, Tomofumi Morishita
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Patent number: 7262538Abstract: A tooth coil of a concentrated winding stator includes a first layer coil arranged by successively winding a flat type wire around a tooth in a direction advancing from a proximal end portion to a distal end portion of the tooth and a second layer coil arranged by successively winding the wire around and on the first layer coil in a direction advancing from the distal end portion to the proximal end portion of the tooth. The second layer coil of the tooth coil has no turn at a most proximal end portion of the tooth corresponding to a start turn of the first layer coil, so that the tooth coil has an odd turn number.Type: GrantFiled: April 26, 2005Date of Patent: August 28, 2007Assignee: DENSO CorporationInventors: Shigenori Yoneda, Soichi Yoshinaga
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Rotary electric machine with a stator core made of magnetic steel sheets and the stator core thereof
Publication number: 20060279160Abstract: A rotary electric machine has a housing and a stator core and a plurality of fixing members. The core has sheet units laminated along an axial direction. Each unit has core sheets disposed along a circumferential direction so as to be butted to one another on butted surfaces of the sheets. Each position of the butted surfaces of each sheet in the circumferential direction differs from any of those of other sheets adjacent to the each sheet along the axial direction. The sheets of each unit have a plurality of fixing holes disposed along the circumferential direction such that each hole in each unit is aligned with a group of holes in the other units along the axial direction. Each of the members penetrates through a group of aligned holes of the units along the axial direction and is fixed to the housing.Type: ApplicationFiled: June 8, 2006Publication date: December 14, 2006Applicant: Denso CorporationInventors: Soichi Yoshinaga, Shigenori Yoneda -
Patent number: 7148593Abstract: A first layer coil is wound around the surface of a tooth in a direction advancing from a proximal end portion to a distal end portion of this tooth. A second layer coil is wound on the first layer coil in a direction advancing from the distal end portion to the proximal end portion of the tooth coil. Lead wires extend outward in the radial direction from a winding start end of the first layer coil and a winding terminal end of the second layer coil. Respective tooth coils of the same phase are serially connected to arrange three phase windings. A crossover bus bar group is accommodated in a space having a square cross section defined by a core back and a coil end of the tooth coil.Type: GrantFiled: April 21, 2005Date of Patent: December 12, 2006Assignee: Denso CorporationInventors: Shigenori Yoneda, Soichi Yoshinaga
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Patent number: 7126247Abstract: A concentrated winding stator coil of a proximal end extraction type two-layer winding arrangement includes numerous tooth coils which are connected in series to arrange serial coil units and also connected in parallel as pairs arranging respective phase windings. Plural inter-coil bus bars are provided to connect the tooth coils of the serial coil units. Plural terminal bus bars extend from both ends of the serial coil units to connect respective serial coil units in parallel with each other. These bus bars are disposed adjacently to an end face of a core back.Type: GrantFiled: April 26, 2005Date of Patent: October 24, 2006Assignee: Denso CorporationInventors: Shigenori Yoneda, Soichi Yoshinaga
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Patent number: 7091645Abstract: A concentrated-winding type stator coil unit for a rotary electric machine is provided with a stator core having a core back and teeth protruding from the core back. Plural coils are wound around the teeth respectively. Each coil is composed of, for example, a first layered coil formed by winding a coil wire in a layer around each tooth to form plural turns arranged in parallel on each tooth and a second layered coil formed by winding the coil wire in a layer to from plural turns around the first layered coil wound around each tooth. The last turn of the first layered coil continues to the first turn of the second layered coil. Both ends of the coil wire are located at and on a base potion of each of the teeth as a winding-start end and a winding-finish end of each of the coils.Type: GrantFiled: January 27, 2004Date of Patent: August 15, 2006Assignee: Denso CorporationInventors: Shigenori Yoneda, Masahiro Seguchi, Noriyasu Inomata
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Patent number: 6998757Abstract: A compact and reliable structure of a multi-rotor synchronous machine which may be employed as a generator/motor for automotive vehicles is provided. The machine includes an outer rotor having permanent magnets, an inner rotor having permanent magnets disposed to be rotatable relative to the outer rotor, a stator core having armature coils interlinking with field magnetic fluxes produced by the outer and inner rotors, and a rotor-to-rotor relative rotation controlling mechanism. A relative angle between the outer and inner rotors is controlled within a given angular range by controlling the phase and quantity of current flowing through the armature coils to rotate the inner rotor relative to the outer rotor through the rotor-to-rotor relative rotation controlling mechanism, thereby changing the magnetic fluxes interlinking with the armature coils as needed.Type: GrantFiled: May 20, 2004Date of Patent: February 14, 2006Assignee: Denso CorporationInventors: Masahiro Seguchi, Shigenori Yoneda
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Publication number: 20050248228Abstract: A first layer coil is wound around the surface of a tooth in a direction advancing from a proximal end portion to a distal end portion of this tooth. A second layer coil is wound on the first layer coil in a direction advancing from the distal end portion to the proximal end portion of the tooth coil. Lead wires extend outward in the radial direction from a winding start end of the first layer coil and a winding terminal end of the second layer coil. Respective tooth coils of the same phase are serially connected to arrange three phase windings. A crossover bus bar group is accommodated in a space having a square cross section defined by a core back and a coil end of the tooth coil.Type: ApplicationFiled: April 21, 2005Publication date: November 10, 2005Applicant: DENSO CORPORATIONInventors: Shigenori Yoneda, Soichi Yoshinaga