A motor including a rotating portion that rotates about a center axis that extends vertically and a stationary portion that rotatably supports the rotating portion. The stationary portion includes a stator including a coil, radially facing at least a portion of the rotating portion, a base disposed axially below the stator, a circuit board disposed axially between the stator and the base, a conductor electrically connected to the coil and the circuit board, including an extending portion extending axially downward from the circuit board, and a resin portion covering the circuit board and the conductor, connecting the base and the stator. The base is provided in its axially upper surface with an opening that overlaps the conductor when viewed axially.

A ceiling fan having a dual redundant motor mounting assembly for suspending a motor comprising a downrod, a hollow motor shaft suspending the motor from the downrod, a retaining pin extending through the hollow motor shaft, and a retaining rod coupled to the retainer pin for redundantly suspending the motor.

A ceiling fan assembly having a motor assembly with a rotating blade hub, and at least one fan blade mounted to the rotating blade hub with a blade span defined between a tip and a root, and defining an airfoil cross section including a rounded leading edge and a v-shaped trailing edge defining a chord therebetween. The blade comprising a pressure side surface and a suction side surface extending between the leading and trailing edges and including a hollow interior and including a tip opening at the tip and a root opening at the root for accessing the hollow interior. The at least one fan blade includes a thickness to chord ratio of less than about 15%.

A ceiling fan including a retention system and method of redundantly retaining a ceiling fan can include a ceiling fan motor assembly including a hollow motor shaft at least partially surrounded by a motor housing. A retainer plate is provided at the bottom of the motor housing including an opening. A retainer rod extends through the opening in the retainer plate and secures to the retainer plate. A support cable couples to the retainer rod to suspend the retainer plate from a structure, wherein the retainer plate is configured to redundantly retainer the ceiling fan.

A ceiling fan assembly having a motor assembly with a rotating blade hub, and at least one fan blade mounted to the rotating blade hub with a blade span defined between a tip and a root, and defining an airfoil cross section including a rounded leading edge and a v-shaped trailing edge defining a chord therebetween. The blade comprising a pressure side surface and a suction side surface extending between the leading and trailing edges and including a hollow interior and including a tip opening at the tip and a root opening at the root for accessing the hollow interior. The at least one fan blade includes a thickness to chord ratio of less than about 15%.

A ceiling fan assembly a motor assembly having a non-rotating, hollow, motor shaft, a stator winding carried by the motor shaft, a wiring harness passing through the hollow of the motor shaft and electrically coupled to the stator winding.

An ceiling fan comprising a motor system. The motor system is mounted around a motor shaft. The motor shaft couples to a downrod for suspending the ceiling fan from a structure. The motor shaft and motor are encased by a motor housing. The motor housing comprises hub arms for mounting a plurality of blade holders. The blade holders coupled to a plurality of blades rotatable about the motor during operation. The downrod comprises a wire disk mounting guy wiring to the downrod. A retention rod is utilized internal of the motor and downrod as a secondary retention method. An electrical connector is internal of the motor shaft and electrically couples to the stator to power the motor.

A ceiling fan structure includes a mounting bracket, a hanging plate, a coupling, and a motor. The mounting bracket is fixed to a ceiling. The hanging plate has a top fixed to the mounting bracket. The top is formed with a recessed accommodating groove for accommodating a first electronic component. The coupling is connected to a bottom of the accommodating groove and extends downward. The coupling is connected with a support plate extending horizontally. The support plate is configured to support a second electronic component. The internal space of the ceiling fan structure is properly planned so that the components of the ceiling fan structure can be reasonably configured, so as to improve the efficiency of assembly.

A ceiling fan assembly including a non-rotating motor shaft with an upper and lower bearing stop, a stator mounted to the non-rotating motor shaft, a rotor surrounding the stator, a motor housing having an upper bearing seat spaced above the upper bearing stop and a lower bearing seat spaced below the lower bearing stop, an upper bearing seated within the upper bearing seat, a lower bearing seated within the lower bearing seat, and a downrod coupling provided on the non-rotating shaft. When the ceiling fan assembly is suspended from a structure with the downrod coupling, the weight of the rotor presses the upper bearing against the upper bearing stop such that the weight of the rotor is transferred through the upper bearing to the non-rotating shaft.

A cooling fan includes: a rotary shaft which is rotatably supported in a fan housing; a rotor which is fixed to the rotary shaft; a stator which is fixed to the fan housing, is arranged so as to be arranged at a predetermined gap away from the rotor, and includes a plurality of stacked stator cores on which a coil is wound; an impeller which is connected to the rotor; a printed circuit board (PCB) which is installed on the bottom side of the stator and controls the cooling fan; and a ground portion which is installed on the stator cores, is electrically connected to a ground pattern of the PCB and expands a ground surface. Thus, damage of circuit components due to electrostatic electricity is prevented, and EMI shielding properties are improved.