Abstract: A fan shaft structure includes a fan frame having an axle seat set therein with a stator silicon steel sheet set and a circuit board installed outside the axle seat, a fan blade set in the fan frame holds a rotor magnet therein relative to the outside of the stator silicon steel sheet set, and a rotating shaft has one end assembled at the fan blade and its other end assembled in the axle seat. The outer part of the rotating shaft located in an accommodating groove is mounted with bearings, oil-containing members and oil-retaining caps. The oil film on the inner diameter of the oil-containing members can contact the rotating shaft to fill the gap between the oil-containing members and the rotating shaft, which can prevent external environmental dust, fine particles or foreign matter from penetrating between the rotating shaft and the bearings.

Abstract: A three-phase brushless fan is disclosed. In the three-phase brushless fan, an outer shell member includes an axis part, and winding columns are disposed around the axis part, and the rotating module includes a fan, an axis coupling part pivoted to the axis part, and a magnetic element having south and north magnetic portions; a circuit board electrically connected to coils formed by winding a conductive wire on the winding columns. The number of the coils is three or a multiple of three, and the number of the coils is not equal a total amount of the south and north magnetic portions. As a result, winding the conductive wire to form the multiple coils can omit the operation of placing coils on the circuit board and save labor cost in welding two head ends of conductive wires on the circuit board one by one.

Abstract: A three-phase brushless fan is disclosed. In the three-phase brushless fan, an outer shell member includes an axis part, and winding columns are disposed around the axis part, and the rotating module includes a fan, an axis coupling part pivoted to the axis part, and a magnetic element having south and north magnetic portions; a circuit board electrically connected to coils formed by winding a conductive wire on the winding columns. The number of the coils is three or a multiple of three, and the number of the coils is not equal a total amount of the south and north magnetic portions. As a result, winding the conductive wire to form the multiple coils can omit the operation of placing coils on the circuit board and save labor cost in welding two head ends of conductive wires on the circuit board one by one.

Abstract: The present disclosure illustrates a fan structure which includes an outer shell member, a rotating module and a circuit module. The outer shell member has a receiving groove, and an axis part and a fastening part. The fastening part includes winding columns. The rotating module includes the fan, an axis coupling part pivotally connected with the axis part, and a magnetic part disposed on a periphery of the axis coupling part. The circuit module includes a circuit board which has positioning holes formed on and annularly arranged the surface thereof. Position-limiting caps are respectively mounted and fixed on the winding column after the winding columns are inserted through the positioning holes. A conductive wire is wound on the winding columns to form coils, and has two ends welded on the circuit board. Therefore, defect rate and assembly cost of production of fan structure of the present disclosure can be decreased.

Abstract: The present disclosure illustrates a fan structure which includes an outer shell member, a rotating module and a circuit module. The outer shell member has a receiving groove, and an axis part and a fastening part. The fastening part includes winding columns. The rotating module includes the fan, an axis coupling part pivotally connected with the axis part, and a magnetic part disposed on a periphery of the axis coupling part. The circuit module includes a circuit board which has positioning holes formed on and annularly arranged the surface thereof. Position-limiting caps are respectively mounted and fixed on the winding column after the winding columns are inserted through the positioning holes. A conductive wire is wound on the winding columns to form coils, and has two ends welded on the circuit board. Therefore, defect rate and assembly cost of production of fan structure of the present disclosure can be decreased.

Abstract: A foldable structure of an electric vehicle is disclosed. In the foldable structure, a frame defines a stowing space, and includes a connection base and a rotatable seat. The connection base has a chute and the seat includes a link rod. The wheel part includes two wheel casings, a tire and a driving device, and a containing space is formed between the wheel casings for containing the tire and the driving device. The wheel casings has a rotator cap protruded at tops thereof, and the rotator cap has an axle hole longitudinally cut therethrough, and the rotator cap is pivotally connected with the rotatable seat by the axle hole, whereby the link rod can be slid into the chute, and the two wheel casings and the tire can be laterally rotated into the stowing space, such that the electric vehicle can just occupy smaller space.

Abstract: A damping device includes a casing structure, a retarding mechanism, a driving mechanism, a restoring mechanism and a resistance mechanism. An accommodating space is formed in the casing structure to accommodate the retarding mechanism, and a through hole and a hollow-out hole are formed at wall surfaces of two opposite sides of the accommodating space respectively. The retarding mechanism has a main shaft passed through out of the through hole, and a retarding shaft acting simultaneously with the main shaft. The driving mechanism has a wire wheel fastened on the main shaft. The restoring mechanism has a restoring wheel fastened on the wire wheel. The resistance mechanism has a metal element fastened on the retarding shaft, and a magnetic part is disposed between the metal element and the hollow-out hole, and an interval is formed between the magnetic part and the metal element.

Abstract: A damping device includes a casing structure, a retarding mechanism, a driving mechanism, a restoring mechanism and a resistance mechanism. An accommodating space is formed in the casing structure to accommodate the retarding mechanism, and a through hole and a hollow-out hole are formed at wall surfaces of two opposite sides of the accommodating space respectively. The retarding mechanism has a main shaft passed through out of the through hole, and a retarding shaft acting simultaneously with the main shaft. The driving mechanism has a wire wheel fastened on the main shaft. The restoring mechanism has a restoring wheel fastened on the wire wheel. The resistance mechanism has a metal element fastened on the retarding shaft, and a magnetic part is disposed between the metal element and the hollow-out hole, and an interval is formed between the magnetic part and the metal element.

Abstract: An advance power-saving power socket for power saving systems includes a socket body which includes an extension cord and has a master socket and at least one slave socket, wherein the slave sockets are connected in parallel with each other at first, and then connected in series with a slave socket temperature sensitive switch and linked with both ends of the power input end on the slave socket control loop. So the master socket is connected in series with the parallel-connected master socket temperature sensitive switch and first heater, and then connected in parallel with the power input end, so as to use the working temperature produced by the current flowing through the first heater of the master socket control loop for controlling over the closed or open state of the slave socket control loop and shunt the current of the master socket control loop.

Abstract: An advance power-saving power socket for power saving systems includes a socket body which includes an extension cord and has a master socket and at least one slave socket, wherein the slave sockets are connected in parallel with each other at first, and then connected in series with a slave socket temperature sensitive switch and linked with both ends of the power input end on the slave socket control loop. So the master socket is connected in series with the parallel-connected master socket temperature sensitive switch and first heater, and then connected in parallel with the power input end, so as to use the working temperature produced by the current flowing through the first heater of the master socket control loop for controlling over the closed or open state of the slave socket control loop and shunt the current of the master socket control loop.

Abstract: A method for making a copper indium chalcogenides powder, includes: (a) reacting a reactant mixture that contains a Cu-containing material, an In-containing material, and a chalcogenides-containing material in a polar organic solvent at an elevated temperature so as to form a precipitate, the polar organic solvent having a molecular structure containing at least one of nitrogen atom and oxygen atom, each of which having at least one lone electron pair, the polar organic solvent further having a dipole moment greater than 2.3 debye; and (b) separating the polar organic solvent from the precipitate.

Abstract: An oil retaining and lubricating structure of an electric fan is disclosed to include a hub having a center barrel and a receiving chamber defined in the center barrel, a shaft rotatably mounted in the center barrel of the hub, an axle bearing mounted in the receiving chamber to support the shaft in the center barrel, and an elastic porous oil retainer mounted in the receiving chamber around the shaft and retaining lubricating oil for lubricating the shaft and the axle bearing upon rotation of the shaft with a fan blade assembly relative to the hub.

Abstract: An dust-protective cycling lubricating structure of an electric fan is disclosed to include a hub defining a receiving chamber, a shaft rotatably mounted in the hub, an axle bearing mounted in the receiving chamber to support the shaft and defining with a top cover of the hub an oil-spreading space and a bottom cover of the hub an oil accumulation space. Lubricating oil is guided upwards by guide grooves on the shaft to lubricate the shaft and the axle bearing and to be further spread over the oil-spreading space and then returned to the oil accumulation space due to the effect of the centrifugal force during rotation of the shaft with a fan blade assembly.

Abstract: A CPU cooling structure is constructed to include a heat sink adapted for mounting on a motherboard to absorb heat from a CPU of the motherboard, a fan provided above the heat sink and adapted for causing currents of air toward the heat sink to carry heat away from the heat sink, and a flow guide mounted on the heat sink to hold the fan above the heat sink, the flow guide having two flow guide holes and an air damper suspended in between the flow guide holes and adapted for guiding air from the fan toward the center area of the heat sink for enabling air to flow through air passages in the heat sink in reversed directions to carry heat away from the heat sink.

Abstract: A transmission shaft set includes a shaft for use in a motor for power output and an axle bush adapted to support the shaft, the shaft and the axle bush being respectively made of material of high toughness and material of high harness such that the hardness difference between the shaft and the axle bush is about Hv100˜Hv400, and the hardness of the axle bush is higher than the shaft.

Abstract: A CPU cooling structure is constructed to include a heat sink adapted for mounting on a motherboard to absorb heat from a CPU of the motherboard, a fan provided above the heat sink and adapted for causing currents of air toward the heat sink to carry heat away from the heat sink, and a flow guide mounted on the heat sink to hold the fan above the heat sink, the flow guide having two flow guide holes and an air damper suspended in between the flow guide holes and adapted for guiding air from the fan toward the center area of the heat sink for enabling air to flow through air passages in the heat sink in reversed directions to carry heat away from the heat sink.

Abstract: A CPU cooling arrangement is constructed to include a heat sink fastened to a CPU holder and disposed in contact with the CPU in the CPU holder, the heat sink having a vertically extended solid base and longitudinal radiation fins at two sides of the solid base, two fans respectively vertically mounted on the radiation fins at two sides of the heat sink, and resilient metal fastening wire rods respectively hung on the heat sinks at two sides and hooked in respective mounting holes of the fan to secure the fans to the heat sink.

Abstract: A heat sink adapted for dissipating heat from a semiconductor device. The heat sink has lower heat sink body, an upper heat sink body soldered to the lower heat sink body, an airtight chamber defined in between the upper heat sink body and the lower heat sink body and drawn into a vacuum status, a working fluid filled in the airtight chamber for circulation between gas phase and liquid phase to transfer heat energy from the bottom side of the heat sink toward the top side thereof, and a porous structure formed in the upper heat sink body and the lower heat sink body inside the airtight chamber for accelerating the circulation of the working fluid between gas phase and liquid phase.

Abstract: A CPU cooling structure is constructed to include a CPU holder holding a CPU, a heat sink mounted on the CPU holder in contact with the CPU, two fans at two sides of the heat sink, and a narrow elongated, substantially -shaped heat sink fastener bridged the heat sink and hooked on front and back hooks of the CPU holder to secure the heat sink in position, the heat sink fastener having a top center screw hole fastened to a top center locating hole of the heat sink by a hand screw, and two coupling end pieces respectively extended from the ends of two arms thereof and hooked on the hooks of the CPU holder.

Abstract: A CPU cooling arrangement is constructed to include a heat sink fastened to a CPU holder and disposed in contact with the CPU in the CPU holder, the heat sink having a vertically extended solid base and longitudinal radiation fins at two sides of the solid base, two fans respectively mounted on the radiation fins at two sides of the heat sink in vertical, and resilient metal fastening wire rods respectively hung on the heat sinks at two sides and hooked in respective mounting holes of the fan to secure the fans to the heat sink.