Abstract: The built-in multidriver device for a camera zoom lens has an independent driver for each lens of a zoom lens kit, and each driver is integrated into the lens mount. A housing positions each independent driver accordingly. The driver devices each include coil stators, magnetic rotors, fixed solenoids, inner solenoid bases, and limited units. The coil stators are placed in the housing, and the magnetic rotors are connected to the fixed solenoids. The inner solenoid bases are connected to the fixed solenoids, and the inner solenoid bases are limited and turned by the limiting units. When the magnetic rotor is turned by the magnetic induction of the coil stators, the fixed solenoid turns in the inner solenoid base, and the inner solenoid base is limited by the limiting unit. The inner solenoid base is moved axially, and the lenses inside are driven to zoom independently.

Abstract: The present invention provides a driving unit for an analog meter. The size of the driving unit is modified into a column shape, so that the first tape and second tape of the stator unit can be placed in double layers, guiding more pins of the input terminal from the same side. The driving unit can simplify the manufacturing process, and the size of the components of the driving unit are greatly reduced, making assembly more flexible or emptying more space for other components. The more concentrated pin can be connected easily or can be provided with more options for connection.

Abstract: A cooling fan includes a base (31), an impeller (33), a magnetic ring (38) and a stator (30). The base has a central tube (311) extending upwardly therefrom. An annular protrusion (313) is formed around the tube near a bottom end thereof. The protrusion is homocentric with the tube. The impeller includes a hub (332) and a shaft (333) extending downwardly from a central portion of the hub. The stator is mounted around the protrusion. An annular space (320) is defined between the stator and the tube. The magnetic ring is received in the annular space, and is fixedly mounted around the shaft to rotate with the shaft during operation of the cooling fan.

Abstract: The built-in multidriver device for a camera zoom lens has an independent driver for each lens of a zoom lens kit, and each driver is integrated into the lens mount. A housing positions each independent driver accordingly. The driver devices each include coil stators, magnetic rotors, fixed solenoids, inner solenoid bases, and limited units. The coil stators are placed in the housing, and the magnetic rotors are connected to the fixed solenoids. The inner solenoid bases are connected to the fixed solenoids, and the inner solenoid bases are limited and turned by the limiting units. When the magnetic rotor is turned by the magnetic induction of the coil stators, the fixed solenoid turns in the inner solenoid base, and the inner solenoid base is limited by the limiting unit. The inner solenoid base is moved axially, and the lenses inside are driven to zoom independently.

Abstract: The present invention provides a driving unit for an analog meter. The size of the driving unit is modified into a column shape, so that the first tape and second tape of the stator unit can be placed in double layers, guiding more pins of the input terminal from the same side. The driving unit can simplify the manufacturing process, and the size of the components of the driving unit are greatly reduced, making assembly more flexible or emptying more space for other components. The more concentrated pin can be connected easily or can be provided with more options for connection.