Denso Corporation

Asmo Co., Ltd.

Akio Murase

Yoshimichi Sahara

Akihiko Suzuki

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

There is provided a brushless motor including (1) a motor shaft, (2) an insulator that includes a ring-shaped insulating portion covering the ring-shaped unit, (3) a centerpiece that includes a main body section that supports the motor shaft, (4) a first water stopping wall that is formed in a ring shape along the circumferential direction of the motor shaft, and that extends along the axial direction of the motor shaft from the ring-shaped insulating portion toward the main body section, and (5) a second water stopping wall that is formed in a ring shape along the circumferential direction of the motor shaft, that extends out along the axial direction of the motor shaft from the main body section toward the ring-shaped insulating portion, and that, together with the first water stopping wall, configures a labyrinth structure.

Brushless motor with water stopping walls creating labyrinth structure

In a stator, winding coil sections are formed at respective teeth, and pairs of winding terminal portions that are continuous to the respective winding coil sections are guided out from between base end portions of respective adjacent teeth toward one axial direction side of the stator core. A first retaining portion that retains a base end portion of one winding terminal portion of each pair of winding terminal portions, and a second retaining portion that retains another winding terminal portion of each pair of winding terminal portions, are provided between the base end portions of the respective adjacent teeth. The first retaining portions and the second retaining portions are disposed between the base end portions of the respective adjacent teeth so as to be offset from each other in a circumferential direction and a radial direction of the stator core.

Stator, brushless motor, and stator manufacturing method

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.

Growing community of inventors

Toyohashi, Japan

Akio Murase