Abstract: A bendable vapor chamber structure includes a first plate body and a second plate body assembly. The first plate body has a first face and a second face on upper and lower sides. The second plate body assembly has multiple plate bodies and at least one bendable connection body. The bendable connection body is disposed between the plate bodies and connected with the plate bodies. The second plate body assembly is correspondingly mated with the first plate body to together define a receiving space. A first capillary structure is disposed in the receiving space. A working liquid is filled in the receiving space. By means of the bendable connection body, the vapor chamber is bendable.

Abstract: A fan brake circuit includes a semiconductor switch unit, a motor, a motor drive circuit, an isolation unit, a charging/discharging unit and a control unit. One end of the motor, the semiconductor switch unit and the control unit serves to receive an input power. When the fan is powered off, the semiconductor switch unit disconnects from the motor and the motor drive circuit receives the operation voltage provided by the charging/discharging unit and transmits the drive signal to the motor, whereby the motor forms a short-circuit to brake. By means of the design of the fan brake circuit, when the fan is powered off, the fan can quickly brake and stop and the cost is lowered.

Abstract: The present invention relates to an active brake circuit for a fan with backup power, which comprises a protection circuit, a motor driving unit, a motor, a fan controller, and at least one bypass unit. The protection circuit receives an input power source. The motor driving unit connected between the protection circuit and the motor outputs a driving signal to the motor. The fan controller connected to the motor driving unit and the protection circuit outputs a control signal to the motor driving unit. The bypass unit is between the input power source and the motor driving unit such that the bypass unit passes the input power source to the motor driving unit. When the protection circuit disconnects the input power source to the motor, the motor driving unit outputs the driving signal to the motor such that a short circuit is formed to brake the motor.

Abstract: A loop heat pipe structure includes a transport pipe, an evaporator, a first wick layer, a second wick layer, and a plurality of grooves. The transport pipe communicates with the evaporator. The evaporator has a bottom and internally defines a first chamber and a second chamber, and has a working fluid filled therein. The first wick layer is located on the bottom, and the second wick layer is located on and covers the first wick layer. The grooves can be selectively provided on the first wick layer or the bottom. The first and second wick layers are so designed that the situation of very high vapor pressure would not occur in the second chamber, enabling the loop heat pipe structure to have upgraded heat dissipation efficiency.

Abstract: A loop heat pipe structure includes an evaporator and a first pipe. The evaporator has a first chamber, a first wick layer, and a bottom. The first wick layer is provided in the first chamber. The first pipe includes a first inlet and a first outlet communicably connected to the evaporator. The first inlet internally defines a second chamber communicable with the first wick layer. By providing the second chamber outside the evaporator, the evaporator can have a reduced overall height without creating very high vapor pressure in the evaporator, enabling the loop heat pipe structure to have upgraded heat dissipation efficiency.

Abstract: A bearing device comprises a bearing fixing base, a hub, an oil seal bush, and an oily felt. The bearing fixing base is fixedly joined with a tubular support; the hub is fixedly joined with a rotor spindle which extends into the tubular support and rotates with respect to the tubular support; the oil seal bush is disposed between the spindle and the tubular support with a receiving clearance being defined between the oil seal bush and the tubular support; the oily felt is disposed in the receiving clearance. The oily felt supplies lubrication oil to lubricate the oil seal bush for prolonging a life span of the bearing device.

Abstract: A bearing device comprises a bearing fixing base, a hub, an oil seal bush, and an oily felt. The bearing fixing base is fixedly joined with a tubular support; the hub is fixedly joined with a rotor spindle which extends into the tubular support and rotates with respect to the tubular support; the oil seal bush is disposed between the spindle and the tubular support with a receiving clearance being defined between the oil seal bush and the tubular support; the oily felt is disposed in the receiving clearance. The oily felt supplies lubrication oil to lubricate the oil seal bush for prolonging a life span of the bearing device.

Abstract: A loop heat pipe structure includes an evaporator and a first pipe. The evaporator has a first chamber, a first wick layer, and a bottom. The first wick layer is provided in the first chamber. The first pipe includes a first inlet and a first outlet communicably connected to the evaporator. The first inlet internally defines a second chamber communicable with the first wick layer. By providing the second chamber outside the evaporator, the evaporator can have a reduced overall height without creating very high vapor pressure in the evaporator, enabling the loop heat pipe structure to have upgraded heat dissipation efficiency.

Abstract: A loop heat pipe structure includes a transport pipe, an evaporator, a first wick layer, a second wick layer, and a plurality of grooves. The transport pipe communicates with the evaporator. The evaporator has a bottom and internally defines a first chamber and a second chamber, and has a working fluid filled therein. The first wick layer is located on the bottom, and the second wick layer is located on and covers the first wick layer. The grooves can be selectively provided on the first wick layer or the bottom. The first and second wick layers are so designed that the situation of very high vapor pressure would not occur in the second chamber, enabling the loop heat pipe structure to have upgraded heat dissipation efficiency.

Abstract: A single-bearing fan structure includes a fan frame having a bearing cup with a bearing received therein, the bearing cup having a radially inward protruded lip portion formed at a first end to abut on a top of the bearing, and a groove internally formed at a second end; a blade hub having a rotary shaft fixedly connected thereto with a distal end of the rotary shaft inserted into the bearing; a retainer engaged with the groove; a first elastic element fitted around the rotary shaft and located between the blade hub and the bearing; and a second elastic element received in the bearing cup and located between the bearing and the retainer. The first and second elastic elements and the bearing respectively axially and radially support the blade hub, enabling the fan structure to operate stably and have extended service life.

Abstract: A protective case for fan includes a case body having a closed bottom portion and a sidewall portion extended along a periphery of the bottom portion, so that a receiving space is defined between the bottom and sidewall portions. A case cover can be closed onto an open top of the receiving space to seal the same. Two first raised ribs are formed on the closed bottom portion adjacent to two opposite sides thereof, such that first retaining portions are defined between the sidewall portion and faces of the first raised ribs facing toward the sidewall portion, and second retaining portions are defined on another faces of the first raised ribs facing away from the sidewall portion. By providing the first and second retaining portions, the same protective case can be conveniently used to stably pack differently sized fans to save the manufacturing cost of the protective case.

Abstract: A heat sink structure includes a heat dissipating body and at least one heat pipe. The heat dissipating body includes a main body having two opposite first and second end faces, and a plurality of radiating fins formed on two wall surfaces of the main body. The heat dissipating body is made of a heat-conducting plastic material through injection molding, and the heat pipe is embedded in the heat dissipating body during the process of injection molding the heat dissipating body. The heat pipe has two opposite first and second ends respectively exposed from the first and second end faces of the heat dissipating body for directly contacting with a heat source, and a pipe body helically extended between the first and second ends and embedded in the heat dissipating body. With these arrangements, the heat sink structure has reduced weight and material cost while providing good heat dissipating effect.

Abstract: A thermal module includes a base for contacting with a heat-producing element, a radiating fin assembly consisting of a plurality of stacked radiating fins, a heat pipe having an end connected to the base and the other end extended through the radiating fin assembly, and a fan mounted to one side of the radiating fin assembly. Each of the radiating fins includes a flat main body having a first and a second transverse edge, and at least one projected portion provided on at least one of the first and the second transverse edge. Positions on the first and/or the second transverse edge without the projected portion are open portions. The projected portions on two adjacent radiating fins are staggered, so that a plurality of expanded heat dissipating spaces can be formed on the radiating fin assembly to enable smooth flowing of heat-carrying airflows and upgraded heat dissipating efficiency.

Abstract: A thermal module for LED includes a base in direct contact with an LED module; a first radiating fin assembly consisting of a plurality of parallelly spaced radiating fins and being connected at one side to the base opposite to the LED module; at least one second radiating fin assembly consisting of a plurality of parallelly spaced radiating fins, so that an air passage is provided between any two adjacent radiating fins of the second radiating fin assembly; and at least one heat pipe having a conducting section extended through and closely bearing against an interface between the base and the first radiating fin assembly, and at least one radiating section outward extended from an end of the conducting section to extend through the second radiating fin assembly. The second radiating fin assembly and the air passages thereof largely upgrade the heat dissipating efficiency of the thermal module.