Abstract: A heat-dissipating fan structure comprises a frame having a through-hole. An air inlet and an air outlet are respectively defined in two ends of the through-hole. A support section is provided in an end of the through-hole and at least two sets of windings are engaged on the frame. An IC control member is mounted on the frame and electrically connected to the windings. A rotor comprises a shaft and plural blades, and a permanent ring magnet is mounted around the blades. An end of the shaft is rotatably received in the support section of the frame. A repulsive magnetic force is directly created between the permanent ring magnet and the windings of the frame to drive the rotor to turn.

Abstract: A method for making a stator of a brushless direct current motor, includes the steps of: winding a coil set to predetermined turns, thereby forming a ring body having a central hole, and performing an insulation process; mounting at least two pole plates on two end faces of the coil set respectively, the pole face and the magnetically conducting plates of each pole plate encompassing the inner and outer periphery of the coil set respectively, and a wiring head of the coil set being drawn outside of the pole plate; and mounting a combination member on the magnetically conducting rings (or plates) of each pole plate, thereby forming a stator. The pole faces of each pole plate may be induced with the permanent magnet of the rotor.

Abstract: An easy-to-start structure for a D.C. brushless motor comprises a base including a through-hole. Plural windings and an IC control member are mounted to the base. At least one magnetically attractive positioning member is mounted to the base and located between two windings that are adjacent to each other. A rotor comprises a shaft rotatably held by a support section in the through-hole and a permanent ring magnet mounted to the shaft, the permanent ring magnet having north and south poles, each of the south pole and the north pole having a strong magnetic area. The positioning member attracts and thus retains one of the strong magnetic areas of the permanent ring magnet in a position proximal to the positioning member when the rotor stops. Thus, the rotor rests in a pre-determined position not located in a dead corner for restarting.

Abstract: A supporting structure for a rotor comprises two holding members, a supporting member, and a fixing member that is fixed in place. Each holding member comprises a hole and an inner flange formed on an inner periphery defining the hole. The supporting member comprises a supporting portion and the fixing member has a hole. An end of a shaft of a rotor extends through the holes of the fixing members with an end face of the shaft resting on the supporting portion of the supporting member. A retainer is engaged in a retaining groove of the shaft to thereby retain the shaft in place. The shaft and the inner flanges of the holding members have a minimum gap or a slight contact therebetween.

Abstract: An impeller structure includes a hub body having one end provided with a top plane which is provided with a central shaft. The hub body has a periphery provided with a plurality of blades. The other end of the hub body is provided with a joint portion that may be combined and secured with the extension hub which has a plurality of blades.

Abstract: A DC brushless motor structure comprises a cylinder-like base having a through-hole or a chamber. The through-hole acts as an axle hole for rotatably receiving a shaft of a rotor. Alternatively, the shaft of the rotor is rotatably received in the chamber. An axle hole is defined in an end of the base. Another axle hole is defined in a lid attached to an end of the base. The shaft of the rotor is rotatably received in the axle holes. At least two sets of windings are mounted to the base. Also mounted to the base is an IC control member electrically connected to the windings. A magnetic force is generated by a magnetic field that is created as a result of energizing the windings to thereby repulse the permanent magnet of the rotor having a north pole and a south pole, thereby driving the rotor to turn.

Abstract: A fan having a supercharging structure comprises a casing having an air passage hole with an air inlet at a first end thereof and an air outlet at a second end thereof. A base is mounted to the air outlet end of the casing. A supporting plate is mounted in the air passage hole of the casing or an air outlet in the base for engaging with a stator bobbin that pivotally holds a fan wheel to be driven. Plural supercharging plates are mounted between the supporting plate and the base.

Abstract: A fan wheel structure comprises an annular wall, a central shaft extending along a central axis of the annular wall, an annular bottom plate extending outward from a bottom of the annular wall, and plural blades provided on the bottom plate. A joint area between the annular wall and the annular bottom plate is an annular arcuate wall to avoid interference with the air driven by the fan wheel, thereby providing a smoother airflow.

Abstract: A direct current brushless motor of a radial air-gap includes a rotor having a rotation shaft rotated in a magnetic conducting tube of the stator. The magnetic conducting tube has an outer wall combined with a coil seat. The coil seat has two ends respectively mounted with an upper pole plate and a lower pole plate. Each of the upper pole plate and the lower pole plate has a periphery having upper pole faces and/or lower pole faces respectively extended upward and downward therefrom. The pole faces of the upper pole plate and the lower pole plate are arranged in a staggered manner. The pole faces encompassing the coil seat are formed with larger openings for allowing pull out of a distal end of a coating wire of the coil seat.

Abstract: A supporting structure for a rotor comprises two holding members, a supporting member, and a fixing member that is fixed in place. Each holding member comprises a hole and an inner flange formed on an inner periphery defining the hole. The supporting member comprises a supporting portion and the fixing member has a hole. An end of a shaft of a rotor extends through the holes of the fixing members with an end face of the shaft resting on the supporting portion of the supporting member. A retainer is engaged in a retaining groove of the shaft to thereby retain the shaft in place. The shaft and the inner flanges of the holding members have a minimum gap or a slight contact therebetween.

Abstract: A stator assembly structure of a direct current brushless motor includes a coil seat having a fitting hole for passage of the magnetic conducting tube. An upper pole plate and a lower pole plate are mounted above and under the coil seat respectively. At least one upper magnetic conducting plate and lower magnetic conducting plate are respectively bonded on the upper pole plate and the lower pole plate. Each of the upper pole plate, the lower pole plate, the upper magnetic conducting plate, and the lower magnetic conducting plate has a positioning hole for passage of the magnetic conducting tube. Side walls extending toward a vertical direction are formed on the pole ends of the upper pole plate, the lower pole plate, one upper magnetic conducting plate, or one lower magnetic conducting plate.

Abstract: A pole plate for a motor stator comprises a central hole and a plurality of circumferentially regularly spaced sector edges. Each sector edge has a pole face extending in a plane perpendicular to a general plane of the pole plate. The pole face includes a distal side that is opposite to the respective sector edge. A central line passing through a middle point of the respective sector edge and a middle point of the distal side of the respective pole face are not coincident with and at an angle with a radial line passing through a center of the central hole and the middle point of the respective sector edge.

Abstract: A stator comprises a bobbin around which a winding is mounted. Pole plates are respectively mounted to two ends of the bobbin. Each pole plate comprises a plurality of vertically extending pole faces each having a peak region and two sides. The peak region is not located on a central line passing through a middle point on a bottom side of the respective pole face and being perpendicular to the respective pole plate; namely, the peak region is located on a side of the central line. The two sides of the respective pole face that connect the bottom side of the respective pole face to the peak region are non-rectilinear and different from each other in shape.

Abstract: A direct current brushless motor structure that can be started easily, includes a stator provided with a plurality of pole plates. Each pole plate has a pole face. Each pole face is located on the circumference of the same diameter of the center of the pole plate, to form an equally spaced annular arrangement with the permanent magnet of the rotor. Each pole face of the pole plate has at least one magnetic plate extended upward or downward, and the magnetic plates are arranged in an equally angular staggered manner.

Abstract: A pole plate for a motor stator includes a central hole and a plurality of circumferentially regularly spaced sector edge. Each sector edge has a pole face extending in a plane perpendicular to a planar surface of the pole plate. The pole face includes a distal side that is opposite to the respective sector edge. A central line passing though a middle point of the respective sector edge and a middle point of the distal side of the respective pole face are not coincident with and at an angle with a radial line passing through a center of the central hole and the middle point of the respective sector edge.

Abstract: A stator with a radial winding and a method for manufacturing such a stator provides a plurality of pole plates made of a magnetically conductive material. Each pole plate comprises a hub and at least two poles extending radially outward from the hub. The poles are spaced by an identical angular interval. Each pole has a distal end with a magnetic pole face. A metal wire is wound around the poles of the pole plates, thereby forming a pole plate assembly. At least two of the pole plate assemblies are assembled together with the poles of the pole plate assemblies disposed alternately.

Abstract: A direct current brushless motor structure that can be started easily, includes a stator provided with a plurality of pole plates. Each pole plate has a pole face. Each pole face is located on the circumference of the same diameter of the center of the pole plate, to form an equally spaced annular arrangement with the permanent magnet of the rotor. Each pole face of the pole plate has at least one magnetic plate extended upward or downward, and the magnetic plates are arranged in an equally angular staggered manner.

Abstract: A direct current brushless type vibration motor primarily includes a cylindrical housing having a bottom provided with a pivot hole, and a top having an opening end. A stator seat is fixed in the inner wall of the housing, and is provided with coils and poles. The poles of the stator seat mate with the permanent magnet of the rotor. The rotor has a shaft whose two ends are respectively pivoted in the pivot hole of the bottom of the housing, and the pivot hole provided by the cover plate and the circuit board that close the opening end of the housing. The shaft has an integral permanent magnet and an eccentric member. The circuit board is fixed in the housing and has a sensing drive circuit.

Abstract: A stator assembly comprises upper and lower pole plates or silicon steel sheets each having a plurality of radial poles. Each radial pole includes a magnetic pole face extending along a direction parallel to a longitudinal direction. The magnetic pole faces of each upper pole plate, each lower pole plate, or each silicon steel sheet may be of the same or different length. Alternatively, the magnetic pole faces may be overlapped with each other or not overlapped with each other. The overall magnetic pole face formed by the magnetic pole faces may be so arranged to represent a step-like structure or an inclined side.

Abstract: A motor comprises a base plate with an axle seat to which a stator bobbin is mounted. The stator bobbin comprises an axle hole for rotatably receiving a shaft of a rotor. The rotor comprises a permanent ring magnet. A balance ring is mounted to the base plate and comprises an upright annular wall and an annular bottom wall. The upright annular wall of the balance ring and a lower section of the permanent ring magnet attract each other while the annular bottom wall of the balance ring and a lower end face of the permanent ring magnet attract each other.