Asmo Co., Ltd.

Denso Corporation

Yoshimichi Sahara

Masato Ooishi

Akio Murase

Tatsuya Kawai

Kazuyuki Izumi

Yoshihiro Mashima

Masakatsu Uchida

Bungo Mizutani

Akihiko Suzuki

Takehiko Ohshita

Takuro Ota

Plural windings are wound around plural teeth in sequence such that crossover wires formed in the plural windings are all arranged on another axial direction side of an annular section of a stator core. When this is performed, the plural windings are wound around the plural teeth in sequence such that terminal portions of the plural windings are placed in a fifth slot, a sixth slot, an eighth slot, and a ninth slot.

Brushless motor

A brushless motor capable of accurately detecting magnetism and securing rigidity of a center piece is provided. A brushless motor () includes; a stator (); a rotor () having a rotor magnet () arranged radially outward of the stator (); a metal center piece () that has a plate-like portion () disposed opposing the stator () at one side in an axial direction of the stator (), and holds the stator (); a control board () disposed at an opposite side from the stator () with respect to the plate-like portion (), and provided with a magnetic detection sensor (); a magnetic induction member () extending from a side of the rotor magnet () to a side of the magnetic detection sensor (); and a resin-made connector member () that holds a connector terminal () connected to the control board (), holds the magnetic induction member (), and is fixed to the center piece ().

A rotating electrical device comprising a circuit section being disposed offset from a motor section to one side or another side, in a direction orthogonal to an axial direction of the motor section as viewed in the axial direction of the motor section; a stator configuring the motor section together with a rotor, the stator comprising a plurality of teeth formed in a radial shape and a plurality of windings that each includes a terminal-end portion that extends in the axial direction of the motor section, the plurality of windings being respectively wound on any of the plurality of teeth such that each of the terminal-end portions is disposed further to a side in the orthogonal direction from a central axis of the motor section where the circuit section is disposed; and a plurality of terminals that wire-in the circuit section and the terminal-end portions of the plurality of windings.

Rotating electrical device

A brushless motor is provided that is capable of suppressing water from contacting a magnetism detection sensor. A brushless motor includes a rotor section that includes a rotor magnet; a stator section that generates a rotational magnetic field with respect to the rotor magnet; a magnetism guide member that guides a portion of magnetism from the rotor magnet; a control unit that includes a circuit substrate and a circuit chamber which is sealed and houses the circuit substrate; and a magnetism detection sensor that is mounted on the circuit substrate inside the circuit chamber and that detects magnetism guided by the magnetism guide member.

Motor and brushless motor

A brushless motor is provided including: a rotor housing including a circular-cylinder-shaped bearing housing portion and an outer cylinder portion; a rotor magnet provided at an inner peripheral face of the outer cylinder portion; a bearing housed in the bearing housing portion and assembled to a motor shaft; a stator core including a ring-shaped core main body provided in the radial direction between the bearing housing portion and the rotor magnet and a ring-shaped wall portion formed in a ring-shape along an inner peripheral portion of the core main body, extending from the core main body inner peripheral portion towards the radial direction inside, and facing one opening of the bearing housing portion; and a center piece including a main body portion facing one opening of the outer cylinder portion, and a close contact portion closely contacting in the stator core axial direction with the ring-shaped wall portion.

Engaging protrusions of a lower end housing are axially snap-fitted into through holes, respectively, of a yoke housing to couple therebetween. Each of spacers is circumferentially placed between and is press-fitted between corresponding adjacent two of permanent magnets fixed to an inner peripheral surface of the yoke housing. Each spacer axially contacts a corresponding contact part of the end housing. A lower ball bearing and an upper ball bearing are supported by the lower end housing and an upper end housing, respectively, to rotatably support a shaft. A wave washer is axially positioned between the lower ball bearing and the lower end housing to exert an urging force between the lower end housing and the upper end housing through the shaft.

Dynamo-electric machine

Winding start sections and winding end sections of winding wires are pulled out from slots of an armature core and are guided by wire guides of an insulator. Thereafter, each corresponding one of the winding start sections and the winding end sections is guided by a corresponding winding holding portion and is directly connected to a corresponding one of power supply terminal elements of a circuit apparatus without using an intermediate terminal.

Electric motor having a circuit apparatus

In an armature of a motor, each of windings is wound around at least two of a plurality of tooth portions of a core to form at least two wound parts of the winding. A crossover of each winding, which connects between corresponding two of the at least two wound parts, is placed on one axial side of a ring portion of the core. A crossover relief space is axially recessed in an end surface of the ring portion on the one axial side. At least a portion of each crossover is received in the crossover relief space. Guides project on the other axial side of the core and guide winding terminal portions of the windings.

Armature and motor

A second ball bearing is installed from a first axial side toward a second axial side into an interior of a bearing holder of a rotor through an opening of the bearing holder, so that an outer race of the second ball bearing is press fitted to an inner peripheral portion of the interior of the bearing holder. A first ball bearing is inserted from the first axial side toward the second axial side into the interior of the bearing holder of the rotor through the opening of the bearing holder after the installing of the second ball bearing, so that an outer race of the first ball bearing is press fitted to the inner peripheral portion of the interior of the bearing holder and is axially spaced from the outer race of the second ball bearing.

Growing community of inventors

Toyohashi, Japan

Yoshimichi Sahara