Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Shoei Abe

Hirofumi Atarashi

Keiichi Yamamoto

Shigeru Tajima

Hiromitsu Sato

Manabu Yazaki

Yoshihisa Kubota

Masaaki Kaizuka

Tamotsu Kawamura

Sho Yaegaki

Masao Nishikawa

Hiroshi Gomi

Mitsuaki Hirakawa

Wataru Yada

Masato Hirose

Tomoyuki Okada

Kazuyuki Iwata

Tsutomu Yoshino

Hiroyuki Isegawa

Takeo Fukuda

Tatsuro Horie

Manabu Sakurada

Tomoharu Kumagai

Masato Fujioka

Satoshi Ishikawa

Tsuyoshi Yadori

Makoto Kawakami

Ken Oizumi

Shigeo Kobayashi

A rotor of a rotary electric machine includes a first magnet and a fourth magnet whose magnetic fields are oriented in radial directions of a stator, and a second magnet and a third magnet whose magnetic fields are oriented in circumferential directions of the stator. Teeth portions of the stator each include a base portion that protrudes in a radially inward direction of a yoke portion, a flange portion that is wider than the base portion, and an expanding portion interposed between the base portion and the flange portion. An angle of intersection between the base portion and the expanding portion is 108&#xb0; to 130&#xb0;. A distance (thickness) from an inner circumferential side end part to an outer circumferential side end part of the flange portion is 0.2 mm to 2.0 mm.

Rotary electric machine with rotor having permanent magnets and stator with teeth having flange portion, expanding portion and base portion

A rotor of a rotary electric machine includes a first magnet and a fourth magnet whose magnetic fields are oriented in radial directions of a stator, and a second magnet and a third magnet whose magnetic fields are oriented in circumferential directions of the stator. In the stator, slots are formed between adjacent ones of teeth portions. An electromagnetic coil is provided in the slots. A distal end on an inner circumferential side of the electromagnetic coil is offset from an inner circumferential side end part of a base portion, which is a part of the teeth portion, toward a yoke portion.

Rotary electric machine with rotor having permanent magnets with ratios of total surface area and a stator with tooth having coils with offset from flange portions

A first magnet, a second magnet, a fourth magnet, and a third magnet are retained on a rotor of a rotary electric machine in this order alongside one another in a circumferential direction. Magnetic fields of the first magnet and the fourth magnet are oriented in radial directions of a stator. Magnetic fields of the second magnet and the third magnet are oriented in circumferential directions of the stator. When the rotor is viewed in plan from above or below, a ratio of a total surface area of the first magnet and the fourth magnet to a total surface area of the second magnet and the third magnet is S:S=1:0.2 to 1:1.

Rotary electric machine with rotor having permanent magnets with ratios of total surface area and a stator with tooth having wide ends

Provided is an omni-wheel including an annular core member for rotatively supporting a plurality of free roller that is light, economical and strong. The omni-wheel comprises an annular core member having at least one junction defined by mutually circumferentially opposing ends thereof, a plurality of sleeve members defining an inner bore and passed onto the core member and a free roller rotatably supported on an outer surface of each sleeve member in a coaxial relationship, wherein the mutually opposing ends of the annular core member at each junction are fitted into either end of the inner bore of the corresponding sleeve member.

Omni-wheel, frictional propulsion device and omni-directional vehicle

An electric motor () is constructed with an inner circumference side rotor () and an outer circumference side rotor () which are coaxially arranged; and planetary gear mechanism which rotates at least one of the inner circumference side rotor () and the outer circumference side rotor () around an rotary shaft O. Long sides of substantially plate-like inner circumference side permanent magnets () of the inner circumference side rotor () and those of substantially plate-like outer circumference side permanent magnets () of the outer circumference side rotor () are arranged so as to face each other by the rotation of at least one of the inner circumference side rotor () and the outer circumference side rotor () in a cross section perpendicular to the rotary shaft O with the planetary gear mechanism.

Dual rotor electric machine having a field-controlling rotor

There is provided an axial gap motor including a rotor rotatable around a rotation axis; and a first stator and a second stator arranged to face each other with the rotor therebetween from both sides of the rotor in the rotation axis direction of the rotor, wherein the rotor includes a plurality of main permanent magnets having magnetizing directions in the rotation axis direction of the rotor and arranged in a peripheral direction of the rotor; a partition member arranged between the main permanent magnets which are adjacent to each other in the peripheral direction of the rotor, the partition member including a nonmagnetic material; and auxiliary permanent magnets having a magnetizing direction that is orthogonal both to the rotation axis direction of the rotor and a radial direction of the rotor, and arranged on both sides of the partition member in the rotation axis direction of the rotor.

Axial gap motor

The rotorof an axial gap type motoris provided with a plurality of main magnetsrespectively magnetized in an axial direction of a rotational axis and disposed at predetermined intervals in a peripheral direction, a plurality of yokesstructured by a laminated memberproduced by winding a tape-shaped electromagnetic steel plateand respectively disposed on both sides of the main magnetsin the axial direction, and a rotor framemade of a die-cast alloy and including a plurality of ribsrespectively interposed between the main magnetsadjoining each other in the peripheral direction and extending in the radial direction, and an inner cylindrical portionand an outer cylindrical portionrespectively formed on the radially inner side of the ribsand on the radially outer side of the ribsAccording to this structure, the yokes structured by the wound laminated member and the rotor frame can be firmly unified with each other, thereby being able to secure such rigidity that can withstand a centrifugal force generated due to the rotation of the rotor and a magnetic suction force given from the stator.

Axial gap type motor and method of manufacturing rotor of motor

The present axial gap motor is provided with: a rotor that is rotatable around a rotation axis; and a pair of stators that are opposed to each other with the rotor interposed therebetween from both sides in a rotation axis direction which is parallel with the rotation axis of the rotor. The rotor includes: a plurality of main magnets arranged in a circumferential direction so that a flux direction is parallel with the rotation axis direction; a sub permanent magnet which is disposed in the vicinity of a circumferential end portion of the main magnet and is magnetized in a direction perpendicular to the rotation axis direction and a radial direction; and a magnetic member which is provided on a surface of at least one of the one side and the other side in the rotation axis direction of the main magnet. A length of the magnetic member in the rotation axis direction is larger than a length of the sub permanent magnet in the rotation axis direction.

An axial gap motor includes a rotor and a stator, and the rotor includes within a rotor frame a plurality of main magnet pieces which are disposed in a circumferential direction in such a manner that their magnetized direction is in a rotational axis direction and magnetic members which are disposed on surfaces of at least one sides in the rotational axis direction of the main magnet pieces. The magnetic member has a fitting portion on one end face in a radial direction of the rotor thereof which is adapted to fit in the rotor frame.

The axial gap motor includes the rotor having: a rotor frame including a plurality of ribs extending in a radial direction, an inner circumferential side annular shaft, and an outer circumferential side annular rim, which are integrally coupled to each other through the ribs; the shaft has shaft side rib mounting holes through which the ribs are mounted, the rim has rim side rib mounting holes through which the ribs are mounted, the ribs have radial inner ends mounted and fixed into the shaft side rib mounting holes and radial outer ends mounted and fixed into the rim side rib mounting holes, and in the rotor frame, the main magnets and the sub magnets are alternately disposed in the circumferential direction, between the shaft and the rim.

An axial gap motor includes: a rotor; and a stator, wherein: the rotor includes a plurality of main permanent magnet parts and a plurality of auxiliary permanent magnet parts, the auxiliary permanent magnet parts being disposed near an end portion of each of the main permanent magnet parts and a magnetizing direction of each of the auxiliary permanent magnet parts corresponding to a direction perpendicular to the direction of the rotational axis; each of the stators includes a plurality of teeth arranged in a circumferential direction and protruding toward the rotor along the rotational axis, and a circumferential distance between a circumferential direction first end and a circumferential direction second end of each of the auxiliary permanent magnet parts on a surface opposite the stator is larger than a slot width of a slot defined between the teeth adjacent in the circumferential direction.

A rotor () is provided with: a main permanent magnet mounting layer () having a plurality of main permanent magnets () mounted thereon; a first sub permanent magnet mounting layer () having a plurality of first sub permanent magnets () mounted thereon; a second sub permanent magnet mounting layer () having a plurality of second sub permanent magnets () mounted thereon; and a phase change mechanism capable, by turning at least either one of the first sub permanent magnet mounting layer () and the second permanent magnet mounting layer (), and the main permanent magnet mounting layer () about the rotational axis, of changing the relative phase between the first sub permanent magnet mounting layer () and the second permanent magnet mounting layer (), and the main permanent magnet mounting layer ().

Motor and motor control device

The axial gap type motor according to the present invention is provided with: a rotor and a first stator and a second stator, wherein the first and second stators includes an annular back yoke and a plurality of teeth which is provided on the annular back yoke at predetermined intervals in a peripheral direction so as to protrude toward the rotor in the direction of the rotation axis; the peripheral pitch of the plurality of teeth of the first and second stators are equal to each other; and in a case where the first stator and the second stator which sandwich the rotor therebetween in the direction of the rotation axis are seen from one side in the direction of the rotation axis, facing surfaces of the teeth of the first and second stators which face to the rotor are formed so as not to overlap completely each other.

Axial gap type motor

A rotor includes a rotor frame having a plurality of ribs which are disposed at predetermined intervals in a circumferential direction and which extend in a radial direction, and a shaft portion and a rim portion which are provided at inside diameter sides and outside diameter sides of the plurality of ribs, respectively, main magnet portions which are disposed individually between the ribs which are adjacent to each other in the circumferential direction, and a plurality of sub-magnet portions which are disposed on at least one sides of the ribs in the rotational axis direction, and wherein a rigid portion is formed in an area where the sub-magnet portions are projected in the radial direction relative to an area where the rib is projected in the radial direction in a cross section of the rim portion taken along the rotational axis direction.

A controller able to efficiently operate an electric motor of an axial air-gap type as an electric motor and an electricity generator is provided. The controller of the electric motor () of the axial air-gap type has a rotor () having a permanent magnet, and a first stator () and a second stator () oppositely arranged through the rotor () in a rotation axis direction of the rotor (); wherein the controller includes a first electric current command determining section () for supplying a driving electric current from a first power source () to an armature winding () of the first stator (), and rotating the rotor (); a first electric current control section (); a second electric current command determining section () for charging a second power source () by electric power generated in an armature winding () of the second stator () when the rotor () is rotated by the supply of the driving electric current to the armature winding () of the first stator (); and a second electric current control section ().

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Kawachi-gun, Japan

Shoei Abe