Nidec Corporation

Hidehiro Haga

Ryusuke Sato

Shunsuke Murakami

Takashi Hattori

Takao Atarashi

Masato Aono

Nakaba Kataoka

Takayuki Migita

Yu Asahi

Yoshiaki Yamashita

Kosuke Ogawa

Masashi Sonoda

Yosuke Yamada

Yasuaki Nakahara

Kuniaki Adachi

Kensuke Shoji

Toshiya Okamoto

Takahiro Kizu

Keita Nakanishi

Tatsuro Kawamoto

Yoshihiro Uchitani

Tomoki Iga

Masayoshi Maeda

Satomi Takei

Shuhei Yamashita

A motor includes a wire support member that includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires extending upward from a coil, a first conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and a first conducting member, a bus bar unit includes a second conducting member connected to the coil lead wire held by the wire holding portion, and a bus bar holder that holds the second conducting member, and a bearing holder includes a through-hole which penetrates the bearing holder in an axial direction and through which a coil end of the coil lead wire or the second conducting member passes.

Motor including a bearing holder with through-holes

A motor includes a rotor including a rotation axis; a stator including coils; a cylindrical housing including an opening portion; busbars including busbar connecting portions; terminal pins including terminal connecting portions in a first direction orthogonal to an axial direction; a terminal support holding the terminal pins, wherein the housing has an insertion hole that opens towards an axial-direction one end side; the terminal support includes a protruding portion inserted into the insertion hole; one of the protruding portion and the insertion hole includes a fitting portion fitted to the other of the protruding portion and the insertion hole, and a guiding portion positioned on an insertion-end side of the fitting portion; and, in the guiding portion, a side surface on a side of the first direction is inclined in a direction opposite to the first direction with increasing distance from an open end of the insertion hole.

Motor and method of manufacturing motor

A motor includes a rotor that has a shaft with a central axis extending in a vertical direction as a center, a stator disposed so as to face the rotor in a radial direction, a bearing that supports the shaft, a wire support member disposed above the stator, and a bearing holder disposed above the wire support member to hold the bearing. The stator includes a plurality of teeth, and a plurality of coils provided on the plurality of teeth. The wire support member includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires drawn out from the coil, a conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and the conducting member.

Motor

In a motor, a wire support member includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires extending upward from a coil, a first conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and a first conducting member, a bus bar unit includes a second conducting member connected to the coil lead wire held by the wire holding portion, and a bus bar holder that holds the second conducting member. A bearing holder includes a through-hole which penetrates the bearing holder in an axial direction and through which a coil end of the coil lead wire or the second conducting member passes.

A motor includes a stator including a stator core and coils, and neutral point bus bars disposed on a first side of the coils in an axial direction. The plural coils include a first coil group of a first control system, and a second coil group of a second control system. The neutral point bus bars include a first neutral point bus bar to which the coils of the first coil group are electrically connected, and a second neutral point bus bar to which the coils of the second coil group are connected. At least two of the neutral point bus bars are disposed at positions that overlap each other in the radial direction.

A motor includes a rotor having a shaft disposed along a central axis extending in a vertical direction; and a stator opposed to the rotor in a radial direction with a gap therebetween. The stator includes: an annular core back extending in a circumferential direction; a plurality of teeth extending from the core back in the radial direction; a plurality of coils formed of a conductive wire wound around the teeth, the coils forming a plurality of connection systems; and an insulator, at least part of which is positioned between the teeth and the coils. The coils include: a first coil wound around the teeth via the insulator; and a second coil wound around the teeth via the first coil and the insulator.

Motor, motor production method, and stator unit

A motor includes a bus bar assembly including a bus bar, a wiring member, and a bus bar holder. The bus bar holder includes a main body portion, a bottom portion, and a first circuit board support portion. The wiring member includes a circuit board connection terminal electrically connected to the circuit board. The circuit board connection terminal includes a contact portion connected to the circuit board, and applies force to the circuit board through the contact portion. The first circuit board support portion is disposed at a region of the bottom portion to define a side at which the circuit board connection terminal is located when viewed from one direction. The first circuit board support portion and the contact portion are located at different positions when viewed from the one direction.

A motor comprising: a stator including a plurality of coils, and a rotary axis penetrating the stator, the stator includes n (n&#x2265;2) sets of three-phase circuits, each of which is provided with three phases, each phase of the three-phase circuit has a coil group in which m (m&#x2265;2) coils are formed with a single conductive wire, and all coil groups of three-phase circuits have the same winding direction, the three-phase circuits include neutral point bus bars connecting each coil terminal on one side of each of the coil group at a neutral point, and three phase bus bars connecting each coil terminal on one side of each of the coil group, the three phase bus bars are arranged in a circumferential direction and form a phase bus bar group, and the phase bus bar group and the neutral point bus bars are alternately arranged in the circumferential direction.

Bus bar structure for a motor

A motor includes a bus bar holder with a bottom portion widening from an inner surface of a main body portion to a radially inner side, and protrusion portions extending from the bottom portion toward one side. A wiring member held by the bus bar holder includes circuit board connection terminals electrically connected to one surface of the circuit board. The circuit board connection terminals are arranged in a predetermined direction at one surface of the circuit board. An outer edge of the circuit board is provided with a first notch portion in which one of the protrusions is located. The first notch portion is opened toward any one of a direction from the center axis to the circuit board connection terminal and a predetermined direction, when viewed from one direction.

Described herein is a motor including a stationary section and a rotating section. The stationary section includes a stator core having a plurality of teeth, and a coil constituted by a conducting wire wound around each of the plurality of teeth. The rotating section has a plurality of magnets arranged in a circumferential direction, a rotor core which is in contact with the magnets, a magnet holder which is fixed to the rotor core, and an annular plate. The lower surface of the annular plate faces the upper surface of the magnets. Further, the annular plate is fixed to the rotor core and the magnet holder. Employing this structure enables the annular plate to further prevent an upward position shift of the magnets.

A motor includes a rotor, a stator, a housing, a bus bar assembly, a cover fixed to the housing, and a circuit board. The bus bar assembly includes a bus bar, a wiring member, and a bus bar holder. The bus bar holder includes a main body portion, a connector portion, and a connection terminal holding portion. The cover directly or indirectly contacts a second side of the main body portion. The wiring member includes a circuit board connection terminal fixed to the connection terminal holding portion and an external power-supply connection terminal. At least one other portion of the wiring member is located closer to a second side of the motor than the external power-supply connection terminal.

A bus bar holder of a motor includes a main body portion, and a connector portion protruding from the main body portion toward a radially outer side and located at a rear side of an axial direction ahead of a housing. The bus bar holder is provided with a seal portion directly or indirectly contacting a cover along a circumferential direction of a center axis. The connector portion includes a connector connection portion that connects the main body portion of the bus bar holder to the connector main body portion. At least a portion of the surface of a front side of an axial direction of the connector connection portion is located at a front side ahead of the seal portion at a radially outer side of the seal portion.

Motor including bus bar assembly

A motor includes a rotor, a stator, first and second bearings supporting the rotor, a bus bar portion, and a tubular housing retaining the bus bar portion, the stator, and the first bearing. The housing includes a circular bottom portion including a through-hole, and a first bearing retaining portion retaining the first bearing and extending in one direction. The bus bar portion includes a bus bar, and a bus bar holder supporting the bus bar. The bus bar holder includes a second bearing retaining portion retaining the second bearing, and a tubular main body portion. The main body portion is positioned by the stator.

Motor including busbar portion

A motor includes a shaft disposed along a central axis extending in an up-down direction, a rotor assembly mounted on the shaft, a stator radially facing the rotor assembly with a clearance therebetween, and a plurality of busbars electrically connected to the stator. The busbar includes a first busbar and a second busbar. The first busbar has an upper disposed portion that is disposed above the second busbar. The second busbar has a busbar cavity that is recessed downward at a position that overlaps with the upper disposed portion in an axial direction.

Growing community of inventors

Kyoto, Japan

Hidehiro Haga