Abstract: A fan motor includes a motor, an impeller, and a housing. The motor includes a stationary portion including a stator, and a rotating portion that rotates about a center axis extending vertically. The impeller includes blades and rotates with the rotating portion. The housing accommodates at least a portion of the motor and the impeller in the housing. The housing includes a cylindrical portion, a flange portion, and at least one rib. The cylindrical portion has a cylindrical shape, extends in an axial direction, and accommodates at least a portion of the motor and the impeller in the cylindrical portion. The flange portion protrudes radially outward from an upper end portion or a lower end portion of the cylindrical portion. The at least one rib has a columnar shape, extends from the flange portion on an outer peripheral surface of the cylindrical portion, and is inclined against the axial direction.

Abstract: A motor includes a stationary unit and a rotary unit. The rotary unit includes a shaft, a magnet, and a rotor holder for holding the magnet on an inner circumferential surface thereof The rotor holder includes a top surface portion extending in a direction orthogonal to a center axis, a first surface portion extending radially outward from a radial outer end portion of the top surface portion, a second surface portion positioned axially below the top surface portion and having an outer diameter larger than an outer diameter of the first surface portion, a first connecting portion arranged to connect a radial outer end portion of the first surface portion and a radial outer end portion of the second surface portion, and a second connecting portion arranged to connect the radial outer end portion of the top surface portion and a radial inner end portion of the second surface portion.

Abstract: A fan motor includes a motor, an impeller and a housing. The housing includes an inner wall portion, a silencer portion, and a communicating opening. The inner wall portion extends along a rotation axis to assume a tubular shape, and houses at least a portion of the impeller therein. The silencer portion includes a portion radially outside of the inner wall portion, and defines a silencing space between the inner wall portion and the silencer portion. The communicating opening brings a space inside of the inner wall portion into communication with the silencing space. A portion of the communicating opening is defined by an end portion of the inner wall portion on an inlet side. The silencing space covers only a portion of the circumferential extent of the inner wall portion. This allows the silencing space to be arranged in a dead space around the inner wall portion.

Abstract: A transmission includes a first rotating portion, an eccentric body, a bearing, an external gear, an internal gear, carrier pins, and a second rotating portion. The first rotating portion rotates about a central axis. The eccentric body rotates therewith and a distance from the central axis to an outer surface thereof varies circumferentially. The bearing is provided on the eccentric body. The external gear includes through holes and is provided on the bearing. The internal gear is cylindrical, surrounds the central axis, and is disposed radially outside the external gear. The carrier pins are columnar and inserted into the through holes. The second rotating portion, to which upper portions of the carrier pins are fixed, rotates about the central axis. The external and internal gears have different numbers of teeth. The tooth of the external gear farthest from the central axis meshes with the internal gear. The diameters of the carrier pins decrease upward.

Abstract: A dryer includes a body portion arranged to hold a motor, a first tubular portion arranged to at least partially cover an outer circumferential portion of the body portion, and a second tubular portion arranged axially behind the first tubular portion, and arranged to at least partially cover the outer circumferential portion of the body portion. An outer circumferential joining portion included in the body portion is held between an axial rear edge portion of the first tubular portion and an axial front edge portion of the second tubular portion.

Abstract: A motor includes a stationary unit and a rotary unit. The rotary unit includes a shaft, a magnet, and a rotor holder for holding the magnet on an inner circumferential surface thereof The rotor holder includes a top surface portion extending in a direction orthogonal to a center axis, a first surface portion extending radially outward from a radial outer end portion of the top surface portion, a second surface portion positioned axially below the top surface portion and having an outer diameter larger than an outer diameter of the first surface portion, a first connecting portion arranged to connect a radial outer end portion of the first surface portion and a radial outer end portion of the second surface portion, and a second connecting portion arranged to connect the radial outer end portion of the top surface portion and a radial inner end portion of the second surface portion.

Abstract: A motor includes a motor body part and a cap member. The motor body part includes a stationary unit, a rotary unit arranged to rotate about a center axis, and a bearing fixed to the stationary unit and arranged to rotatably support the rotary unit. The cap member includes a top surface portion extending perpendicularly to the center axis, a bottom surface portion disposed below the top surface portion and having a larger outer diameter than the top surface portion, and a connecting portion which connects the top surface portion and the bottom surface portion. The connecting portion includes a first connecting portion which connects an outer edge of the top surface portion and an outer edge of the bottom surface portion, and a second connecting portion which connects the outer edge of the top surface portion and an inner edge of the bottom surface portion.

Abstract: This fan motor includes a motor, an impeller arranged to rotate together with a rotating portion of the motor, and a housing arranged to house the motor and the impeller therein. The housing includes an inner wall portion, a silencer portion, and a communicating opening. The inner wall portion is arranged to extend along a rotation axis to assume a tubular shape, and is arranged to house at least a portion of the impeller therein. The silencer portion includes a portion arranged radially outside of the inner wall portion, and is arranged to define a silencing space between the inner wall portion and the silencer portion. The communicating opening is arranged to bring a space inside of the inner wall portion into communication with the silencing space. A portion of the communicating opening is defined by an end portion of the inner wall portion on an inlet side. The silencing space is arranged to cover only a portion of the circumferential extent of the inner wall portion.

Abstract: An inner-rotor motor includes a shaft, a rotor magnet, a stator, a housing including a housing tubular portion extending along a rotation axis, a cap, and a bearing portion. The cap is located above the housing, and includes a cap bottom portion and a cap tubular portion which extends downward from the cap bottom portion. A core back of the stator includes a tubular outer circumferential surface including a plurality of stator contact portions in contact with the housing tubular portion. The stator contact portions are spaced from one another in a circumferential direction. The cap tubular portion includes a plurality of cap contact portions in contact with the housing and spaced from one another in the circumferential direction. At least one of the cap contact portions is located at a circumferential position different from a circumferential position of each stator contact portion.

Abstract: A dryer includes a body portion arranged to hold a motor, a first tubular portion arranged to at least partially cover an outer circumferential portion of the body portion, and a second tubular portion arranged axially behind the first tubular portion, and arranged to at least partially cover the outer circumferential portion of the body portion. An outer circumferential joining portion included in the body portion is held between an axial rear edge portion of the first tubular portion and an axial front edge portion of the second tubular portion.

Abstract: An inner-rotor motor includes a shaft, a rotor magnet, a stator, a housing including a housing tubular portion extending along a rotation axis, a cap, and a bearing portion. The cap is located above the housing, and includes a cap bottom portion and a cap tubular portion which extends downward from the cap bottom portion. A core back of the stator includes a tubular outer circumferential surface including a plurality of stator contact portions in contact with the housing tubular portion. The stator contact portions are spaced from one another in a circumferential direction. The cap tubular portion includes a plurality of cap contact portions in contact with the housing and spaced from one another in the circumferential direction. At least one of the cap contact portions is located at a circumferential position different from a circumferential position of each stator contact portion.