Abstract: An impeller includes a metal base plate, a shaft and a plurality of plastic blades. The metal base plate includes a shaft-coupling portion, a peripheral portion, and first and second surfaces. The first surface faces away from the second surface in a first direction, and the second surface faces away from the first surface in a second direction. The metal base plate is flat between the shaft-coupling portion and the peripheral portion. The first surface has a permanent magnet. The shaft has a fixing end coupled with the shaft-coupling portion, as well as a free end extending axially in the first direction. Each plastic blade has a coupling portion coupled with the peripheral portion, as well as an air-driving portion axially extending in the second direction. The impeller may be rotatably coupled with a driving module. The driving module is installed in a fan frame to form an advection fan.

Abstract: An impeller of an advection-type fan includes a metal base plate, a shaft and a plurality of plastic blades. The metal base plate includes a shaft-coupling portion and a peripheral portion, with a first plane facing in a first direction and a second plane facing in a second direction opposite to the first direction arranged between the shaft-coupling portion and the peripheral portion. The metal base plate is in a plane form between the shaft-coupling portion and the peripheral portion. The shaft has a fixing end and a free end. The fixing end is coupled with the shaft-coupling portion, and the free end extends in the first direction. Each plastic blade has a coupling portion and an air-driving portion. The coupling portion is coupled with the peripheral portion, and the air-driving portion extends in the second direction.

Abstract: An electronic product including a heat dissipating device is disclosed. The electronic product includes a casing, a heat conducting board, at least one fan unit and a plurality of electronic elements. The casing includes a compartment. The heat conducting board divides the compartment into first and second chambers. The first chamber includes a plurality of openings. The fan unit(s) includes an air inlet aligned with an opening of the openings, as well as an air outlet aligned with another opening of the openings. The first chamber defines at least one air channel each being in the form of a single air channel including two ends respectively in communication with the opening and the other opening. In one embodiment, the at least one fan unit includes first and second fan units. In another embodiment, the at least one air channel includes first and second air channels in communication with each other.

Abstract: An easy-to-start motor includes a base, a stator and a rotor. The base has a plastic member and a metallic induction member wrapped with the plastic member. The metallic induction member includes at least one magnetic attraction portion. Each magnetic attraction portion is in the form of a protrusion. The stator is coupled with the base. The rotor has a shaft and a permanent magnet. The shaft is capable of being coupled with the base. The at least one magnetic attraction portion is magnetically attracted by the permanent magnet, so as to prevent the rotor from stopping at a dead location where it is difficult to start the motor. A base of the easy-to-start motor is also disclosed and adapted to be coupled with a rotor, including a plastic member and a metallic induction member wrapped with the plastic member.

Abstract: A rotor structure for a motor includes a shaft, a single magnet and two fixing seats. The single magnet has two opposite end faces. An axial hole has a maximum extent equal to a maximum extent between the two opposite end faces. At least one of the two opposite end faces has a first engaging member. The magnet and each opposite end face have a maximum radial extent. Each fixing seat includes an abutting face having a maximum radial extent the same as the maximum radial extent of the single magnet and of the opposite end faces. One of the abutting faces has a second engaging member. The first engaging member is located at the maximum radial extent at the outer edge of the at least one of the two opposite end faces, or located at the inner edge of the at least one of the two opposite end faces.

Abstract: An impeller includes a metal base plate, a shaft and a plurality of plastic blades. The metal base plate includes a shaft-coupling portion, a peripheral portion, and first and second surfaces. The first surface faces away from the second surface in a first direction, the second surface faces away from the first surface in a second direction. The metal base plate is flat between the shaft-coupling portion and the peripheral portion. The first surface has a permanent magnet. The shaft has a fixing end coupled with the shaft-coupling portion, as well as a free end extending axially in the first direction. Each plastic blade has a coupling portion coupled with the peripheral portion, as well as an air-driving portion axially extending in the second direction. The impeller may be rotatably coupled with a driving module. The driving module is installed in a fan frame to form an advection fan.

Abstract: An impeller of an advection-type fan includes a metal base plate, a shaft and a plurality of plastic blades. The metal base plate includes a shaft-coupling portion and a peripheral portion, with a first plane facing in a first direction and a second plane facing in a second direction opposite to the first direction arranged between the shaft-coupling portion and the peripheral portion. The metal base plate is in a plane form between the shaft-coupling portion and the peripheral portion. The shaft has a fixing end and a free end. The fixing end is coupled with the shaft-coupling portion and the free end extends in the first direction. Each plastic blade has a coupling portion and an air-driving portion. The coupling portion is coupled with the peripheral portion and the air-driving portion extends in the second direction.

Abstract: A heat dissipating fan includes a housing having an air inlet and an air outlet between which an air passageway is formed. A fixed seat is provided in the air passageway and includes first positioning holes. A magnetically conductive first casing includes a first outer wall, an extended wall extending radially outward from an end of the first outer wall and having second positioning holes aligned with the first positioning holes, and a first support on the other end of the first outer wall. A second casing is coupled to an inner periphery of the extended wall of the first casing. A motor mounted in the first and second casings includes a stator and a circuit board electrically connected to the stator.

Abstract: An inner-rotor-type motor includes a casing, a shaft and a claw-pole member. The shaft is rotatably coupled to the casing, and coupled to a permanent magnet having a magnetism-inducing surface. The claw-pole member is coupled within the casing and has an annular portion and a plurality of salient-poles. The annular portion has an inner circumferential wall. Each salient-pole is disposed between the annular portion and a respective pole plate. Each pole plate has a first side and a second side. The first side and the second side oppose each other. A magnetic pole surface is formed between the first side and the second side and faces the magnetism-inducing surface of the permanent magnet. An air gap is formed between the magnetic pole surface and the magnetism-inducing surface. Each pole plate has an extension portion and a shrinking portion. The coil unit is coupled to the plurality of salient-poles.

Abstract: A wind-speed-detecting device including a stator, a rotor and a processing unit is disclosed. The stator has a flux-sensing member. The rotor has a plurality of blades and a magnet module, wherein the rotor is rotatably coupled with the stator, at least a part of the plurality of blades is arranged in a settling area of an air channel, and the magnet module faces the flux-sensing member. The processing unit electrically connects with the flux-sensing member to receive an electrical signal generated by the flux-sensing member and to send out a processing result.

Abstract: A miniature fan includes a housing having a mounting portion with a shaft seat. A base is mounted to the mounting portion of the housing. The base includes first and second faces spaced along an axis. An outer layer is provided on the first face of the base. A bottom layer is provided on the second face of the base. The base further includes a coil unit intermediate the outer layer and the bottom layer. The coil unit is electrically connected to a drive circuit. An impeller includes a shaft and a permanent magnet. The shaft is coupled to the shaft seat of the housing and rotatable about the axis. The permanent magnet is aligned with the coil unit. The axial height of the miniature fan is reduced, and the structure of the miniature fan is simplified.

Abstract: A stator for a brushless DC motor includes a cylindrical member and a positioning member. The cylindrical member is formed by a plurality of metal wires. Each metal wire includes two ends each forming a terminal. The cylindrical member includes first and second ends separated along a longitudinal axis. The positioning member includes an annular body received in the first end of the cylindrical member and separated from the second end of the cylindrical member along the longitudinal axis. The positioning member maintains a shape of the cylindrical member. The stator can be mounted in a space defined by a housing and a base engaged with the housing, forming a brushless DC motor. A bearing and a circuit board are mounted in the space. The bearing rotatably supports a shaft. A permanent magnet is mounted to the shaft and aligned with the stator.

Abstract: A cooling system for a portable electronic device includes a detection module, a cooling module, and a central control module. The detection module detects whether the portable electronic device is in a communication state. The detection module generates a communication identification signal when the portable electronic device is in the communication state. The detection module generates a non-communication identification signal when the portable electronic device is not in the communication state. The cooling module includes a fan and a fan driving unit electrically coupled to the fan. The central control module is electrically coupled to the detection module and the fan driving unit, receives the communication identification signal or the non-communication identification signal, and drives the fan to rotate or stop via the fan driving unit according to the identification signals.

Abstract: A heat dissipating fan includes a housing having an air inlet and an air outlet between which an air passageway is formed. A fixed seat is provided in the air passageway and includes first positioning holes. A magnetically conductive first casing includes a first outer wall, a first annular lip extending radially outward from an end of the first outer wall and having second positioning holes aligned with the first positioning holes, and a first support on the other end of the first outer wall. A second casing includes a second outer wall, a second annular lip extending radially outward from an end of the second outer wall and having third positioning holes aligned with the first positioning holes, and a second support on the other end of the second outer wall. Fasteners extend through the first, second and third positioning holes. A motor is mounted in the first and second casings.

Abstract: A coil unit for a motor stator includes a plurality of layout layers. At least one coil and a conductive portion electrically connected to the at least one coil are formed on a surface of each layout layer. The conductive portions of two adjacent layout layers are electrically connected to each other. An insulting layer is provided between two adjacent layout layers. The coil unit can be coupled to a face of a substrate to form a motor stator with reduced axial height and reduced volume.

Abstract: A miniature heat-dissipating fan includes a stator and a rotor. The stator has a first leakage flux absorber, a coil layer arranged on the first leakage flux absorber, and a hole. The coil layer has a plurality of coils, and the hole passes through the first leakage flux absorber and the coil layer. The rotor has an impeller, a second leakage flux absorber and a permanent magnet. The second leakage flux absorber and the permanent magnet are attached to a bottom of the impeller, such that the rotor is rotatably coupled to the stator. Consequently, magnetic flux leakage under the stator is prevented to assure that electromagnetic interference will never be caused, and an overall axial thickness of the miniature heat-dissipating fan is reduced by the configuration of the stator.

Abstract: A miniature heat-dissipating fan includes a stator and a rotor. The stator has a first leakage flux absorber and a coil layer that is arranged on the first leakage flux absorber and has a plurality of coils. An annular wall is formed on an outer edge of the first leakage flux absorber of the stator to define an air inlet, an air outlet and a compartment. The first leakage flux absorber has a shaft tube in the compartment and the coil layer is mounted around the shaft tube. The rotor is received in the compartment of the stator and has an impeller, a second leakage flux absorber and a permanent magnet. The impeller has a shaft rotatably inserted in the shaft tube of the stator and both the second leakage flux absorber and the permanent magnet are attached to a bottom of the impeller.

Abstract: A miniature motor includes a substrate having a pivotal portion. A coil unit and a detection element are provided around the pivotal portion. A rotor is rotatably mounted to the pivotal portion and includes a hub and a permanent magnet mounted to the hub and aligned with the coil unit and the detection element. The permanent magnet includes a plurality of north and south poles each having a stronger magnetism section. A weaker magnetism section is formed between two adjacent stronger magnetism sections. At least one auxiliary starting member is mounted between the substrate and the rotor and aligned with the permanent magnet. When the rotor stops rotating, the at least one auxiliary starting member aligns with and magnetically attracts at least one of the stronger magnetism sections, locating the detection element in a position not aligned with the weaker magnetism sections along an axis of the hub.

Abstract: A fan housing module includes a base unit and a cover unit engageable with the base unit. The base unit includes a plurality of bases integrally formed with each other to form a structure in the same array arrangement. Alternatively, the cover unit includes a plurality of covers integrally formed with each other to form a structure in the same array arrangement. Thus, after the base unit is engaged with the cover unit, each base and one of the covers together form a fan housing for assembly of a motor fan such that the motor fans form a fan array.

Abstract: A heat-dissipating fan includes a housing, a stator, a rotor and at least one retaining member. The stator and rotor are received inside the housing. The rotor includes an impeller having a plurality of blades. The at least one retaining member is removably mounted to the housing and includes a retaining plate. In an axial direction of the rotor, the retaining plate extends to be above and within a rotational area of the blades to retain the rotor to avoid departure of the rotor from the housing, even if the heat-dissipating fan is hit hard while it is packed, moved, transported or operating. Besides, the arrangement of the retaining member won't result in reduction of air input. Consequently, the retaining member can be quickly mounted to the housing at a predetermined position to enhance convenience of assembly.